Update go-discover library

To pick up go.net change so we can cross compile to arm64
This commit is contained in:
Mahmood Ali 2020-01-08 14:05:52 -05:00
parent 5298fee5d6
commit 8e78fb15bf
423 changed files with 189223 additions and 8622 deletions

354
vendor/github.com/hashicorp/go-discover/LICENSE generated vendored Normal file
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@ -0,0 +1,354 @@
Mozilla Public License, version 2.0
1. Definitions
1.1. “Contributor”
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. “Contributor Version”
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributors Contribution.
1.3. “Contribution”
means Covered Software of a particular Contributor.
1.4. “Covered Software”
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. “Incompatible With Secondary Licenses”
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of version
1.1 or earlier of the License, but not also under the terms of a
Secondary License.
1.6. “Executable Form”
means any form of the work other than Source Code Form.
1.7. “Larger Work”
means a work that combines Covered Software with other material, in a separate
file or files, that is not Covered Software.
1.8. “License”
means this document.
1.9. “Licensable”
means having the right to grant, to the maximum extent possible, whether at the
time of the initial grant or subsequently, any and all of the rights conveyed by
this License.
1.10. “Modifications”
means any of the following:
a. any file in Source Code Form that results from an addition to, deletion
from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. “Patent Claims” of a Contributor
means any patent claim(s), including without limitation, method, process,
and apparatus claims, in any patent Licensable by such Contributor that
would be infringed, but for the grant of the License, by the making,
using, selling, offering for sale, having made, import, or transfer of
either its Contributions or its Contributor Version.
1.12. “Secondary License”
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. “Source Code Form”
means the form of the work preferred for making modifications.
1.14. “You” (or “Your”)
means an individual or a legal entity exercising rights under this
License. For legal entities, “You” includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, “control” means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or as
part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its Contributions
or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution become
effective for each Contribution on the date the Contributor first distributes
such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under this
License. No additional rights or licenses will be implied from the distribution
or licensing of Covered Software under this License. Notwithstanding Section
2.1(b) above, no patent license is granted by a Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third partys
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of its
Contributions.
This License does not grant any rights in the trademarks, service marks, or
logos of any Contributor (except as may be necessary to comply with the
notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this License
(see Section 10.2) or under the terms of a Secondary License (if permitted
under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its Contributions
are its original creation(s) or it has sufficient rights to grant the
rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under applicable
copyright doctrines of fair use, fair dealing, or other equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under the
terms of this License. You must inform recipients that the Source Code Form
of the Covered Software is governed by the terms of this License, and how
they can obtain a copy of this License. You may not attempt to alter or
restrict the recipients rights in the Source Code Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this License,
or sublicense it under different terms, provided that the license for
the Executable Form does not attempt to limit or alter the recipients
rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for the
Covered Software. If the Larger Work is a combination of Covered Software
with a work governed by one or more Secondary Licenses, and the Covered
Software is not Incompatible With Secondary Licenses, this License permits
You to additionally distribute such Covered Software under the terms of
such Secondary License(s), so that the recipient of the Larger Work may, at
their option, further distribute the Covered Software under the terms of
either this License or such Secondary License(s).
3.4. Notices
You may not remove or alter the substance of any license notices (including
copyright notices, patent notices, disclaimers of warranty, or limitations
of liability) contained within the Source Code Form of the Covered
Software, except that You may alter any license notices to the extent
required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on behalf
of any Contributor. You must make it absolutely clear that any such
warranty, support, indemnity, or liability obligation is offered by You
alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute, judicial
order, or regulation then You must: (a) comply with the terms of this License
to the maximum extent possible; and (b) describe the limitations and the code
they affect. Such description must be placed in a text file included with all
distributions of the Covered Software under this License. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing basis,
if such Contributor fails to notify You of the non-compliance by some
reasonable means prior to 60 days after You have come back into compliance.
Moreover, Your grants from a particular Contributor are reinstated on an
ongoing basis if such Contributor notifies You of the non-compliance by
some reasonable means, this is the first time You have received notice of
non-compliance with this License from such Contributor, and You become
compliant prior to 30 days after Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions, counter-claims,
and cross-claims) alleging that a Contributor Version directly or
indirectly infringes any patent, then the rights granted to You by any and
all Contributors for the Covered Software under Section 2.1 of this License
shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an “as is” basis, without
warranty of any kind, either expressed, implied, or statutory, including,
without limitation, warranties that the Covered Software is free of defects,
merchantable, fit for a particular purpose or non-infringing. The entire
risk as to the quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You (not any
Contributor) assume the cost of any necessary servicing, repair, or
correction. This disclaimer of warranty constitutes an essential part of this
License. No use of any Covered Software is authorized under this License
except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from such
partys negligence to the extent applicable law prohibits such limitation.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so this exclusion and limitation may not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts of
a jurisdiction where the defendant maintains its principal place of business
and such litigation shall be governed by laws of that jurisdiction, without
reference to its conflict-of-law provisions. Nothing in this Section shall
prevent a partys ability to bring cross-claims or counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject matter
hereof. If any provision of this License is held to be unenforceable, such
provision shall be reformed only to the extent necessary to make it
enforceable. Any law or regulation which provides that the language of a
contract shall be construed against the drafter shall not be used to construe
this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version of
the License under which You originally received the Covered Software, or
under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a modified
version of this License if you rename the license and remove any
references to the name of the license steward (except to note that such
modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file, then
You may include the notice in a location (such as a LICENSE file in a relevant
directory) where a recipient would be likely to look for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - “Incompatible With Secondary Licenses” Notice
This Source Code Form is “Incompatible
With Secondary Licenses”, as defined by
the Mozilla Public License, v. 2.0.

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@ -25,7 +25,7 @@ require (
github.com/gopherjs/gopherjs v0.0.0-20180825215210-0210a2f0f73c // indirect
github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7 // indirect
github.com/hashicorp/go-multierror v1.0.0
github.com/hashicorp/mdns v1.0.0
github.com/hashicorp/mdns v1.0.1
github.com/hashicorp/vic v1.5.1-0.20190403131502-bbfe86ec9443
github.com/hpcloud/tail v1.0.0 // indirect
github.com/imdario/mergo v0.3.6 // indirect

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@ -52,10 +52,10 @@ github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/U
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/go-multierror v1.0.0 h1:iVjPR7a6H0tWELX5NxNe7bYopibicUzc7uPribsnS6o=
github.com/hashicorp/go-multierror v1.0.0/go.mod h1:dHtQlpGsu+cZNNAkkCN/P3hoUDHhCYQXV3UM06sGGrk=
github.com/hashicorp/go.net v0.0.1 h1:sNCoNyDEvN1xa+X0baata4RdcpKwcMS6DH+xwfqPgjw=
github.com/hashicorp/go.net v0.0.1/go.mod h1:hjKkEWcCURg++eb33jQU7oqQcI9XDCnUzHA0oac0k90=
github.com/hashicorp/mdns v1.0.0 h1:WhIgCr5a7AaVH6jPUwjtRuuE7/RDufnUvzIr48smyxs=
github.com/hashicorp/mdns v1.0.0/go.mod h1:tL+uN++7HEJ6SQLQ2/p+z2pH24WQKWjBPkE0mNTz8vQ=
github.com/hashicorp/mdns v1.0.1 h1:XFSOubp8KWB+Jd2PDyaX5xUd5bhSP/+pTDZVDMzZJM8=
github.com/hashicorp/mdns v1.0.1/go.mod h1:4gW7WsVCke5TE7EPeYliwHlRUyBtfCwuFwuMg2DmyNY=
github.com/hashicorp/vic v1.5.1-0.20190403131502-bbfe86ec9443 h1:O/pT5C1Q3mVXMyuqg7yuAWUg/jMZR1/0QTzTRdNR6Uw=
github.com/hashicorp/vic v1.5.1-0.20190403131502-bbfe86ec9443/go.mod h1:bEpDU35nTu0ey1EXjwNwPjI9xErAsoOCmcMb9GKvyxo=
github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=

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@ -1,320 +0,0 @@
package k8s_test
import (
"log"
"os"
"path/filepath"
"reflect"
"testing"
discover "github.com/hashicorp/go-discover"
"github.com/hashicorp/go-discover/provider/k8s"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
var _ discover.Provider = (*k8s.Provider)(nil)
// Acceptance test against a real cluster
func TestAcc(t *testing.T) {
path := "../../test/tf/k8s/kubeconfig.yaml"
path, err := filepath.Abs(path)
if err != nil {
t.Fatalf("err: %s", err)
}
if _, err := os.Stat(path); err != nil {
t.Skipf("Skipping, can't find %q: %s", path, err)
return
}
args := discover.Config{
"provider": "k8s",
"kubeconfig": path,
"label_selector": "app = valid",
}
l := log.New(os.Stderr, "", log.LstdFlags)
p := &k8s.Provider{}
addrs, err := p.Addrs(args, l)
if err != nil {
t.Fatal(err)
}
t.Logf("Addrs: %v", addrs)
if len(addrs) != 3 {
t.Fatalf("bad: %v", addrs)
}
}
func TestPodAddrs(t *testing.T) {
cases := []struct {
Name string
Args map[string]string
Pods []corev1.Pod
Expected []string
}{
{
"Simple pods (no ready, no annotations, etc.)",
nil,
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "1.2.3.4",
HostIP: "2.3.4.5",
},
},
},
[]string{"1.2.3.4"},
},
{
"Simple pods host network",
map[string]string{"host_network": "true"},
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "1.2.3.4",
HostIP: "2.3.4.5",
},
},
},
[]string{"2.3.4.5"},
},
{
"Only running pods",
nil,
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodPending,
PodIP: "2.3.4.5",
},
},
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "1.2.3.4",
},
},
},
[]string{"1.2.3.4"},
},
{
"Only pods that are ready",
nil,
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodPending,
PodIP: "2.3.4.5",
},
},
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "ready",
Conditions: []corev1.PodCondition{
corev1.PodCondition{
Type: corev1.PodReady,
Status: corev1.ConditionTrue,
},
},
},
},
// Not true
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "not-ready",
Conditions: []corev1.PodCondition{
corev1.PodCondition{
Type: corev1.PodReady,
Status: corev1.ConditionUnknown,
},
},
},
},
// Not ready type, ignored
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "scheduled",
Conditions: []corev1.PodCondition{
corev1.PodCondition{
Type: corev1.PodScheduled,
Status: corev1.ConditionUnknown,
},
},
},
},
},
[]string{"ready", "scheduled"},
},
{
"Port annotation (named)",
nil,
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "1.2.3.4",
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
corev1.Container{
Ports: []corev1.ContainerPort{
corev1.ContainerPort{
Name: "my-port",
HostPort: 1234,
ContainerPort: 8500,
},
corev1.ContainerPort{
Name: "http",
HostPort: 80,
ContainerPort: 8080,
},
},
},
},
},
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
k8s.AnnotationKeyPort: "my-port",
},
},
},
},
[]string{"1.2.3.4:8500"},
},
{
"Port annotation (named with host network)",
map[string]string{"host_network": "true"},
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "1.2.3.4",
HostIP: "2.3.4.5",
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
corev1.Container{
Ports: []corev1.ContainerPort{
corev1.ContainerPort{
Name: "http",
HostPort: 80,
ContainerPort: 8080,
},
},
},
},
},
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
k8s.AnnotationKeyPort: "http",
},
},
},
},
[]string{"2.3.4.5:80"},
},
{
"Port annotation (direct)",
nil,
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "1.2.3.4",
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
corev1.Container{
Ports: []corev1.ContainerPort{
corev1.ContainerPort{
Name: "http",
HostPort: 80,
ContainerPort: 8080,
},
},
},
},
},
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
k8s.AnnotationKeyPort: "4600",
},
},
},
},
[]string{"1.2.3.4:4600"},
},
{
"Port annotation (direct with host network)",
map[string]string{"host_network": "true"},
[]corev1.Pod{
corev1.Pod{
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
PodIP: "1.2.3.4",
HostIP: "2.3.4.5",
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
corev1.Container{
Ports: []corev1.ContainerPort{
corev1.ContainerPort{
Name: "http",
HostPort: 80,
ContainerPort: 8080,
},
},
},
},
},
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
k8s.AnnotationKeyPort: "4600",
},
},
},
},
[]string{"2.3.4.5:4600"},
},
}
for _, tt := range cases {
t.Run(tt.Name, func(t *testing.T) {
l := log.New(os.Stderr, "", log.LstdFlags)
addrs, err := k8s.PodAddrs(&corev1.PodList{Items: tt.Pods}, tt.Args, l)
if err != nil {
t.Fatalf("err: %s", err)
}
if !reflect.DeepEqual(addrs, tt.Expected) {
t.Fatalf("bad: %#v", addrs)
}
})
}
}

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@ -1,184 +0,0 @@
// go generate gen.go
// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
// Package iana provides protocol number resources managed by the Internet Assigned Numbers Authority (IANA).
package iana
// Differentiated Services Field Codepoints (DSCP), Updated: 2013-06-25
const (
DiffServCS0 = 0x0 // CS0
DiffServCS1 = 0x20 // CS1
DiffServCS2 = 0x40 // CS2
DiffServCS3 = 0x60 // CS3
DiffServCS4 = 0x80 // CS4
DiffServCS5 = 0xa0 // CS5
DiffServCS6 = 0xc0 // CS6
DiffServCS7 = 0xe0 // CS7
DiffServAF11 = 0x28 // AF11
DiffServAF12 = 0x30 // AF12
DiffServAF13 = 0x38 // AF13
DiffServAF21 = 0x48 // AF21
DiffServAF22 = 0x50 // AF22
DiffServAF23 = 0x58 // AF23
DiffServAF31 = 0x68 // AF31
DiffServAF32 = 0x70 // AF32
DiffServAF33 = 0x78 // AF33
DiffServAF41 = 0x88 // AF41
DiffServAF42 = 0x90 // AF42
DiffServAF43 = 0x98 // AF43
DiffServEFPHB = 0xb8 // EF PHB
DiffServVOICEADMIT = 0xb0 // VOICE-ADMIT
)
// IPv4 TOS Byte and IPv6 Traffic Class Octet, Updated: 2001-09-06
const (
NotECNTransport = 0x0 // Not-ECT (Not ECN-Capable Transport)
ECNTransport1 = 0x1 // ECT(1) (ECN-Capable Transport(1))
ECNTransport0 = 0x2 // ECT(0) (ECN-Capable Transport(0))
CongestionExperienced = 0x3 // CE (Congestion Experienced)
)
// Protocol Numbers, Updated: 2014-08-12
const (
ProtocolIP = 0 // IPv4 encapsulation, pseudo protocol number
ProtocolHOPOPT = 0 // IPv6 Hop-by-Hop Option
ProtocolICMP = 1 // Internet Control Message
ProtocolIGMP = 2 // Internet Group Management
ProtocolGGP = 3 // Gateway-to-Gateway
ProtocolIPv4 = 4 // IPv4 encapsulation
ProtocolST = 5 // Stream
ProtocolTCP = 6 // Transmission Control
ProtocolCBT = 7 // CBT
ProtocolEGP = 8 // Exterior Gateway Protocol
ProtocolIGP = 9 // any private interior gateway (used by Cisco for their IGRP)
ProtocolBBNRCCMON = 10 // BBN RCC Monitoring
ProtocolNVPII = 11 // Network Voice Protocol
ProtocolPUP = 12 // PUP
ProtocolARGUS = 13 // ARGUS
ProtocolEMCON = 14 // EMCON
ProtocolXNET = 15 // Cross Net Debugger
ProtocolCHAOS = 16 // Chaos
ProtocolUDP = 17 // User Datagram
ProtocolMUX = 18 // Multiplexing
ProtocolDCNMEAS = 19 // DCN Measurement Subsystems
ProtocolHMP = 20 // Host Monitoring
ProtocolPRM = 21 // Packet Radio Measurement
ProtocolXNSIDP = 22 // XEROX NS IDP
ProtocolTRUNK1 = 23 // Trunk-1
ProtocolTRUNK2 = 24 // Trunk-2
ProtocolLEAF1 = 25 // Leaf-1
ProtocolLEAF2 = 26 // Leaf-2
ProtocolRDP = 27 // Reliable Data Protocol
ProtocolIRTP = 28 // Internet Reliable Transaction
ProtocolISOTP4 = 29 // ISO Transport Protocol Class 4
ProtocolNETBLT = 30 // Bulk Data Transfer Protocol
ProtocolMFENSP = 31 // MFE Network Services Protocol
ProtocolMERITINP = 32 // MERIT Internodal Protocol
ProtocolDCCP = 33 // Datagram Congestion Control Protocol
Protocol3PC = 34 // Third Party Connect Protocol
ProtocolIDPR = 35 // Inter-Domain Policy Routing Protocol
ProtocolXTP = 36 // XTP
ProtocolDDP = 37 // Datagram Delivery Protocol
ProtocolIDPRCMTP = 38 // IDPR Control Message Transport Proto
ProtocolTPPP = 39 // TP++ Transport Protocol
ProtocolIL = 40 // IL Transport Protocol
ProtocolIPv6 = 41 // IPv6 encapsulation
ProtocolSDRP = 42 // Source Demand Routing Protocol
ProtocolIPv6Route = 43 // Routing Header for IPv6
ProtocolIPv6Frag = 44 // Fragment Header for IPv6
ProtocolIDRP = 45 // Inter-Domain Routing Protocol
ProtocolRSVP = 46 // Reservation Protocol
ProtocolGRE = 47 // Generic Routing Encapsulation
ProtocolDSR = 48 // Dynamic Source Routing Protocol
ProtocolBNA = 49 // BNA
ProtocolESP = 50 // Encap Security Payload
ProtocolAH = 51 // Authentication Header
ProtocolINLSP = 52 // Integrated Net Layer Security TUBA
ProtocolSWIPE = 53 // IP with Encryption
ProtocolNARP = 54 // NBMA Address Resolution Protocol
ProtocolMOBILE = 55 // IP Mobility
ProtocolTLSP = 56 // Transport Layer Security Protocol using Kryptonet key management
ProtocolSKIP = 57 // SKIP
ProtocolIPv6ICMP = 58 // ICMP for IPv6
ProtocolIPv6NoNxt = 59 // No Next Header for IPv6
ProtocolIPv6Opts = 60 // Destination Options for IPv6
ProtocolCFTP = 62 // CFTP
ProtocolSATEXPAK = 64 // SATNET and Backroom EXPAK
ProtocolKRYPTOLAN = 65 // Kryptolan
ProtocolRVD = 66 // MIT Remote Virtual Disk Protocol
ProtocolIPPC = 67 // Internet Pluribus Packet Core
ProtocolSATMON = 69 // SATNET Monitoring
ProtocolVISA = 70 // VISA Protocol
ProtocolIPCV = 71 // Internet Packet Core Utility
ProtocolCPNX = 72 // Computer Protocol Network Executive
ProtocolCPHB = 73 // Computer Protocol Heart Beat
ProtocolWSN = 74 // Wang Span Network
ProtocolPVP = 75 // Packet Video Protocol
ProtocolBRSATMON = 76 // Backroom SATNET Monitoring
ProtocolSUNND = 77 // SUN ND PROTOCOL-Temporary
ProtocolWBMON = 78 // WIDEBAND Monitoring
ProtocolWBEXPAK = 79 // WIDEBAND EXPAK
ProtocolISOIP = 80 // ISO Internet Protocol
ProtocolVMTP = 81 // VMTP
ProtocolSECUREVMTP = 82 // SECURE-VMTP
ProtocolVINES = 83 // VINES
ProtocolTTP = 84 // Transaction Transport Protocol
ProtocolIPTM = 84 // Internet Protocol Traffic Manager
ProtocolNSFNETIGP = 85 // NSFNET-IGP
ProtocolDGP = 86 // Dissimilar Gateway Protocol
ProtocolTCF = 87 // TCF
ProtocolEIGRP = 88 // EIGRP
ProtocolOSPFIGP = 89 // OSPFIGP
ProtocolSpriteRPC = 90 // Sprite RPC Protocol
ProtocolLARP = 91 // Locus Address Resolution Protocol
ProtocolMTP = 92 // Multicast Transport Protocol
ProtocolAX25 = 93 // AX.25 Frames
ProtocolIPIP = 94 // IP-within-IP Encapsulation Protocol
ProtocolMICP = 95 // Mobile Internetworking Control Pro.
ProtocolSCCSP = 96 // Semaphore Communications Sec. Pro.
ProtocolETHERIP = 97 // Ethernet-within-IP Encapsulation
ProtocolENCAP = 98 // Encapsulation Header
ProtocolGMTP = 100 // GMTP
ProtocolIFMP = 101 // Ipsilon Flow Management Protocol
ProtocolPNNI = 102 // PNNI over IP
ProtocolPIM = 103 // Protocol Independent Multicast
ProtocolARIS = 104 // ARIS
ProtocolSCPS = 105 // SCPS
ProtocolQNX = 106 // QNX
ProtocolAN = 107 // Active Networks
ProtocolIPComp = 108 // IP Payload Compression Protocol
ProtocolSNP = 109 // Sitara Networks Protocol
ProtocolCompaqPeer = 110 // Compaq Peer Protocol
ProtocolIPXinIP = 111 // IPX in IP
ProtocolVRRP = 112 // Virtual Router Redundancy Protocol
ProtocolPGM = 113 // PGM Reliable Transport Protocol
ProtocolL2TP = 115 // Layer Two Tunneling Protocol
ProtocolDDX = 116 // D-II Data Exchange (DDX)
ProtocolIATP = 117 // Interactive Agent Transfer Protocol
ProtocolSTP = 118 // Schedule Transfer Protocol
ProtocolSRP = 119 // SpectraLink Radio Protocol
ProtocolUTI = 120 // UTI
ProtocolSMP = 121 // Simple Message Protocol
ProtocolSM = 122 // Simple Multicast Protocol
ProtocolPTP = 123 // Performance Transparency Protocol
ProtocolISIS = 124 // ISIS over IPv4
ProtocolFIRE = 125 // FIRE
ProtocolCRTP = 126 // Combat Radio Transport Protocol
ProtocolCRUDP = 127 // Combat Radio User Datagram
ProtocolSSCOPMCE = 128 // SSCOPMCE
ProtocolIPLT = 129 // IPLT
ProtocolSPS = 130 // Secure Packet Shield
ProtocolPIPE = 131 // Private IP Encapsulation within IP
ProtocolSCTP = 132 // Stream Control Transmission Protocol
ProtocolFC = 133 // Fibre Channel
ProtocolRSVPE2EIGNORE = 134 // RSVP-E2E-IGNORE
ProtocolMobilityHeader = 135 // Mobility Header
ProtocolUDPLite = 136 // UDPLite
ProtocolMPLSinIP = 137 // MPLS-in-IP
ProtocolMANET = 138 // MANET Protocols
ProtocolHIP = 139 // Host Identity Protocol
ProtocolShim6 = 140 // Shim6 Protocol
ProtocolWESP = 141 // Wrapped Encapsulating Security Payload
ProtocolROHC = 142 // Robust Header Compression
ProtocolReserved = 255 // Reserved
)

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"fmt"
"net"
"sync"
)
type rawOpt struct {
sync.RWMutex
cflags ControlFlags
}
func (c *rawOpt) set(f ControlFlags) { c.cflags |= f }
func (c *rawOpt) clear(f ControlFlags) { c.cflags &^= f }
func (c *rawOpt) isset(f ControlFlags) bool { return c.cflags&f != 0 }
type ControlFlags uint
const (
FlagTTL ControlFlags = 1 << iota // pass the TTL on the received packet
FlagSrc // pass the source address on the received packet
FlagDst // pass the destination address on the received packet
FlagInterface // pass the interface index on the received packet
)
// A ControlMessage represents per packet basis IP-level socket options.
type ControlMessage struct {
// Receiving socket options: SetControlMessage allows to
// receive the options from the protocol stack using ReadFrom
// method of PacketConn or RawConn.
//
// Specifying socket options: ControlMessage for WriteTo
// method of PacketConn or RawConn allows to send the options
// to the protocol stack.
//
TTL int // time-to-live, receiving only
Src net.IP // source address, specifying only
Dst net.IP // destination address, receiving only
IfIndex int // interface index, must be 1 <= value when specifying
}
func (cm *ControlMessage) String() string {
if cm == nil {
return "<nil>"
}
return fmt.Sprintf("ttl: %v, src: %v, dst: %v, ifindex: %v", cm.TTL, cm.Src, cm.Dst, cm.IfIndex)
}
// Ancillary data socket options
const (
ctlTTL = iota // header field
ctlSrc // header field
ctlDst // header field
ctlInterface // inbound or outbound interface
ctlPacketInfo // inbound or outbound packet path
ctlMax
)
// A ctlOpt represents a binding for ancillary data socket option.
type ctlOpt struct {
name int // option name, must be equal or greater than 1
length int // option length
marshal func([]byte, *ControlMessage) []byte
parse func(*ControlMessage, []byte)
}

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@ -1,40 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd netbsd openbsd
package ipv4
import (
"net"
"syscall"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func marshalDst(b []byte, cm *ControlMessage) []byte {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
m.Level = iana.ProtocolIP
m.Type = sysIP_RECVDSTADDR
m.SetLen(syscall.CmsgLen(net.IPv4len))
return b[syscall.CmsgSpace(net.IPv4len):]
}
func parseDst(cm *ControlMessage, b []byte) {
cm.Dst = b[:net.IPv4len]
}
func marshalInterface(b []byte, cm *ControlMessage) []byte {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
m.Level = iana.ProtocolIP
m.Type = sysIP_RECVIF
m.SetLen(syscall.CmsgLen(syscall.SizeofSockaddrDatalink))
return b[syscall.CmsgSpace(syscall.SizeofSockaddrDatalink):]
}
func parseInterface(cm *ControlMessage, b []byte) {
sadl := (*syscall.SockaddrDatalink)(unsafe.Pointer(&b[0]))
cm.IfIndex = int(sadl.Index)
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin linux
package ipv4
import (
"syscall"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func marshalPacketInfo(b []byte, cm *ControlMessage) []byte {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
m.Level = iana.ProtocolIP
m.Type = sysIP_PKTINFO
m.SetLen(syscall.CmsgLen(sysSizeofInetPktinfo))
if cm != nil {
pi := (*sysInetPktinfo)(unsafe.Pointer(&b[syscall.CmsgLen(0)]))
if ip := cm.Src.To4(); ip != nil {
copy(pi.Spec_dst[:], ip)
}
if cm.IfIndex != 0 {
pi.setIfindex(cm.IfIndex)
}
}
return b[syscall.CmsgSpace(sysSizeofInetPktinfo):]
}
func parsePacketInfo(cm *ControlMessage, b []byte) {
pi := (*sysInetPktinfo)(unsafe.Pointer(&b[0]))
cm.IfIndex = int(pi.Ifindex)
cm.Dst = pi.Addr[:]
}

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@ -1,27 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv4
func setControlMessage(fd int, opt *rawOpt, cf ControlFlags, on bool) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
func newControlMessage(opt *rawOpt) []byte {
// TODO(mikio): Implement this
return nil
}
func parseControlMessage(b []byte) (*ControlMessage, error) {
// TODO(mikio): Implement this
return nil, errOpNoSupport
}
func marshalControlMessage(cm *ControlMessage) []byte {
// TODO(mikio): Implement this
return nil
}

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@ -1,166 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd
package ipv4
import (
"os"
"syscall"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func setControlMessage(fd int, opt *rawOpt, cf ControlFlags, on bool) error {
opt.Lock()
defer opt.Unlock()
if cf&FlagTTL != 0 {
if err := setInt(fd, &sockOpts[ssoReceiveTTL], boolint(on)); err != nil {
return err
}
if on {
opt.set(FlagTTL)
} else {
opt.clear(FlagTTL)
}
}
if sockOpts[ssoPacketInfo].name > 0 {
if cf&(FlagSrc|FlagDst|FlagInterface) != 0 {
if err := setInt(fd, &sockOpts[ssoPacketInfo], boolint(on)); err != nil {
return err
}
if on {
opt.set(cf & (FlagSrc | FlagDst | FlagInterface))
} else {
opt.clear(cf & (FlagSrc | FlagDst | FlagInterface))
}
}
} else {
if cf&FlagDst != 0 {
if err := setInt(fd, &sockOpts[ssoReceiveDst], boolint(on)); err != nil {
return err
}
if on {
opt.set(FlagDst)
} else {
opt.clear(FlagDst)
}
}
if cf&FlagInterface != 0 {
if err := setInt(fd, &sockOpts[ssoReceiveInterface], boolint(on)); err != nil {
return err
}
if on {
opt.set(FlagInterface)
} else {
opt.clear(FlagInterface)
}
}
}
return nil
}
func newControlMessage(opt *rawOpt) (oob []byte) {
opt.RLock()
var l int
if opt.isset(FlagTTL) {
l += syscall.CmsgSpace(ctlOpts[ctlTTL].length)
}
if ctlOpts[ctlPacketInfo].name > 0 {
if opt.isset(FlagSrc | FlagDst | FlagInterface) {
l += syscall.CmsgSpace(ctlOpts[ctlPacketInfo].length)
}
} else {
if opt.isset(FlagDst) {
l += syscall.CmsgSpace(ctlOpts[ctlDst].length)
}
if opt.isset(FlagInterface) {
l += syscall.CmsgSpace(ctlOpts[ctlInterface].length)
}
}
if l > 0 {
oob = make([]byte, l)
b := oob
if opt.isset(FlagTTL) {
b = ctlOpts[ctlTTL].marshal(b, nil)
}
if ctlOpts[ctlPacketInfo].name > 0 {
if opt.isset(FlagSrc | FlagDst | FlagInterface) {
b = ctlOpts[ctlPacketInfo].marshal(b, nil)
}
} else {
if opt.isset(FlagDst) {
b = ctlOpts[ctlDst].marshal(b, nil)
}
if opt.isset(FlagInterface) {
b = ctlOpts[ctlInterface].marshal(b, nil)
}
}
}
opt.RUnlock()
return
}
func parseControlMessage(b []byte) (*ControlMessage, error) {
if len(b) == 0 {
return nil, nil
}
cmsgs, err := syscall.ParseSocketControlMessage(b)
if err != nil {
return nil, os.NewSyscallError("parse socket control message", err)
}
cm := &ControlMessage{}
for _, m := range cmsgs {
if m.Header.Level != iana.ProtocolIP {
continue
}
switch int(m.Header.Type) {
case ctlOpts[ctlTTL].name:
ctlOpts[ctlTTL].parse(cm, m.Data[:])
case ctlOpts[ctlDst].name:
ctlOpts[ctlDst].parse(cm, m.Data[:])
case ctlOpts[ctlInterface].name:
ctlOpts[ctlInterface].parse(cm, m.Data[:])
case ctlOpts[ctlPacketInfo].name:
ctlOpts[ctlPacketInfo].parse(cm, m.Data[:])
}
}
return cm, nil
}
func marshalControlMessage(cm *ControlMessage) (oob []byte) {
if cm == nil {
return nil
}
var l int
if ctlOpts[ctlPacketInfo].name > 0 {
if cm.Src.To4() != nil || cm.IfIndex != 0 {
l += syscall.CmsgSpace(ctlOpts[ctlPacketInfo].length)
}
}
if l > 0 {
oob = make([]byte, l)
b := oob
if ctlOpts[ctlPacketInfo].name > 0 {
if cm.Src.To4() != nil || cm.IfIndex != 0 {
b = ctlOpts[ctlPacketInfo].marshal(b, cm)
}
}
}
return
}
func marshalTTL(b []byte, cm *ControlMessage) []byte {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
m.Level = iana.ProtocolIP
m.Type = sysIP_RECVTTL
m.SetLen(syscall.CmsgLen(1))
return b[syscall.CmsgSpace(1):]
}
func parseTTL(cm *ControlMessage, b []byte) {
cm.TTL = int(*(*byte)(unsafe.Pointer(&b[:1][0])))
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import "syscall"
func setControlMessage(fd syscall.Handle, opt *rawOpt, cf ControlFlags, on bool) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}
func newControlMessage(opt *rawOpt) []byte {
// TODO(mikio): Implement this
return nil
}
func parseControlMessage(b []byte) (*ControlMessage, error) {
// TODO(mikio): Implement this
return nil, syscall.EWINDOWS
}
func marshalControlMessage(cm *ControlMessage) []byte {
// TODO(mikio): Implement this
return nil
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd windows
package ipv4
import (
"net"
"syscall"
)
// MulticastTTL returns the time-to-live field value for outgoing
// multicast packets.
func (c *dgramOpt) MulticastTTL() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return getInt(fd, &sockOpts[ssoMulticastTTL])
}
// SetMulticastTTL sets the time-to-live field value for future
// outgoing multicast packets.
func (c *dgramOpt) SetMulticastTTL(ttl int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setInt(fd, &sockOpts[ssoMulticastTTL], ttl)
}
// MulticastInterface returns the default interface for multicast
// packet transmissions.
func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
if !c.ok() {
return nil, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return nil, err
}
return getInterface(fd, &sockOpts[ssoMulticastInterface])
}
// SetMulticastInterface sets the default interface for future
// multicast packet transmissions.
func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setInterface(fd, &sockOpts[ssoMulticastInterface], ifi)
}
// MulticastLoopback reports whether transmitted multicast packets
// should be copied and send back to the originator.
func (c *dgramOpt) MulticastLoopback() (bool, error) {
if !c.ok() {
return false, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return false, err
}
on, err := getInt(fd, &sockOpts[ssoMulticastLoopback])
if err != nil {
return false, err
}
return on == 1, nil
}
// SetMulticastLoopback sets whether transmitted multicast packets
// should be copied and send back to the originator.
func (c *dgramOpt) SetMulticastLoopback(on bool) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setInt(fd, &sockOpts[ssoMulticastLoopback], boolint(on))
}
// JoinGroup joins the group address group on the interface ifi.
// It uses the system assigned multicast interface when ifi is nil,
// although this is not recommended because the assignment depends on
// platforms and sometimes it might require routing configuration.
func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
grp := netAddrToIP4(group)
if grp == nil {
return errMissingAddress
}
return setGroup(fd, &sockOpts[ssoJoinGroup], ifi, grp)
}
// LeaveGroup leaves the group address group on the interface ifi.
func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
grp := netAddrToIP4(group)
if grp == nil {
return errMissingAddress
}
return setGroup(fd, &sockOpts[ssoLeaveGroup], ifi, grp)
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv4
import "net"
func (c *dgramOpt) MulticastTTL() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *dgramOpt) SetMulticastTTL(ttl int) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
// TODO(mikio): Implement this
return nil, errOpNoSupport
}
func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
func (c *dgramOpt) MulticastLoopback() (bool, error) {
// TODO(mikio): Implement this
return false, errOpNoSupport
}
func (c *dgramOpt) SetMulticastLoopback(on bool) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
func (c *dgramOpt) JoinGroup(ifi *net.Interface, grp net.Addr) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
func (c *dgramOpt) LeaveGroup(ifi *net.Interface, grp net.Addr) error {
// TODO(mikio): Implement this
return errOpNoSupport
}

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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package ipv4 implements IP-level socket options for the Internet
// Protocol version 4.
//
// The package provides IP-level socket options that allow
// manipulation of IPv4 facilities. The IPv4 and basic host
// requirements for IPv4 are defined in RFC 791, RFC 1112 and RFC
// 1122.
//
//
// Unicasting
//
// The options for unicasting are available for net.TCPConn,
// net.UDPConn and net.IPConn which are created as network connections
// that use the IPv4 transport. When a single TCP connection carrying
// a data flow of multiple packets needs to indicate the flow is
// important, ipv4.Conn is used to set the type-of-service field on
// the IPv4 header for each packet.
//
// ln, err := net.Listen("tcp4", "0.0.0.0:1024")
// if err != nil {
// // error handling
// }
// defer ln.Close()
// for {
// c, err := ln.Accept()
// if err != nil {
// // error handling
// }
// go func(c net.Conn) {
// defer c.Close()
//
// The outgoing packets will be labeled DiffServ assured forwarding
// class 1 low drop precedence, as known as AF11 packets.
//
// if err := ipv4.NewConn(c).SetTOS(DiffServAF11); err != nil {
// // error handling
// }
// if _, err := c.Write(data); err != nil {
// // error handling
// }
// }(c)
// }
//
//
// Multicasting
//
// The options for multicasting are available for net.UDPConn and
// net.IPconn which are created as network connections that use the
// IPv4 transport. A few network facilities must be prepared before
// you begin multicasting, at a minimum joining network interfaces and
// multicast groups.
//
// en0, err := net.InterfaceByName("en0")
// if err != nil {
// // error handling
// }
// en1, err := net.InterfaceByIndex(911)
// if err != nil {
// // error handling
// }
// group := net.IPv4(224, 0, 0, 250)
//
// First, an application listens to an appropriate address with an
// appropriate service port.
//
// c, err := net.ListenPacket("udp4", "0.0.0.0:1024")
// if err != nil {
// // error handling
// }
// defer c.Close()
//
// Second, the application joins multicast groups, starts listening to
// the groups on the specified network interfaces. Note that the
// service port for transport layer protocol does not matter with this
// operation as joining groups affects only network and link layer
// protocols, such as IPv4 and Ethernet.
//
// p := ipv4.NewPacketConn(c)
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: group}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en1, &net.UDPAddr{IP: group}); err != nil {
// // error handling
// }
//
// The application might set per packet control message transmissions
// between the protocol stack within the kernel. When the application
// needs a destination address on an incoming packet,
// SetControlMessage of ipv4.PacketConn is used to enable control
// message transmissons.
//
// if err := p.SetControlMessage(ipv4.FlagDst, true); err != nil {
// // error handling
// }
//
// The application could identify whether the received packets are
// of interest by using the control message that contains the
// destination address of the received packet.
//
// b := make([]byte, 1500)
// for {
// n, cm, src, err := p.ReadFrom(b)
// if err != nil {
// // error handling
// }
// if cm.Dst.IsMulticast() {
// if cm.Dst.Equal(group)
// // joined group, do something
// } else {
// // unknown group, discard
// continue
// }
// }
//
// The application can also send both unicast and multicast packets.
//
// p.SetTOS(DiffServCS0)
// p.SetTTL(16)
// if _, err := p.WriteTo(data, nil, src); err != nil {
// // error handling
// }
// dst := &net.UDPAddr{IP: group, Port: 1024}
// for _, ifi := range []*net.Interface{en0, en1} {
// if err := p.SetMulticastInterface(ifi); err != nil {
// // error handling
// }
// p.SetMulticastTTL(2)
// if _, err := p.WriteTo(data, nil, dst); err != nil {
// // error handling
// }
// }
// }
//
//
// More multicasting
//
// An application that uses PacketConn or RawConn may join multiple
// multicast groups. For example, a UDP listener with port 1024 might
// join two different groups across over two different network
// interfaces by using:
//
// c, err := net.ListenPacket("udp4", "0.0.0.0:1024")
// if err != nil {
// // error handling
// }
// defer c.Close()
// p := ipv4.NewPacketConn(c)
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en1, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}); err != nil {
// // error handling
// }
//
// It is possible for multiple UDP listeners that listen on the same
// UDP port to join the same multicast group. The net package will
// provide a socket that listens to a wildcard address with reusable
// UDP port when an appropriate multicast address prefix is passed to
// the net.ListenPacket or net.ListenUDP.
//
// c1, err := net.ListenPacket("udp4", "224.0.0.0:1024")
// if err != nil {
// // error handling
// }
// defer c1.Close()
// c2, err := net.ListenPacket("udp4", "224.0.0.0:1024")
// if err != nil {
// // error handling
// }
// defer c2.Close()
// p1 := ipv4.NewPacketConn(c1)
// if err := p1.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
// // error handling
// }
// p2 := ipv4.NewPacketConn(c2)
// if err := p2.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
// // error handling
// }
//
// Also it is possible for the application to leave or rejoin a
// multicast group on the network interface.
//
// if err := p.LeaveGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 250)}); err != nil {
// // error handling
// }
package ipv4

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@ -1,181 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"syscall"
"time"
)
// A Conn represents a network endpoint that uses the IPv4 transport.
// It is used to control basic IP-level socket options such as TOS and
// TTL.
type Conn struct {
genericOpt
}
type genericOpt struct {
net.Conn
}
func (c *genericOpt) ok() bool { return c != nil && c.Conn != nil }
// NewConn returns a new Conn.
func NewConn(c net.Conn) *Conn {
return &Conn{
genericOpt: genericOpt{Conn: c},
}
}
// A PacketConn represents a packet network endpoint that uses the
// IPv4 transport. It is used to control several IP-level socket
// options including multicasting. It also provides datagram based
// network I/O methods specific to the IPv4 and higher layer protocols
// such as UDP.
type PacketConn struct {
genericOpt
dgramOpt
payloadHandler
}
type dgramOpt struct {
net.PacketConn
}
func (c *dgramOpt) ok() bool { return c != nil && c.PacketConn != nil }
// SetControlMessage sets the per packet IP-level socket options.
func (c *PacketConn) SetControlMessage(cf ControlFlags, on bool) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
fd, err := c.payloadHandler.sysfd()
if err != nil {
return err
}
return setControlMessage(fd, &c.payloadHandler.rawOpt, cf, on)
}
// SetDeadline sets the read and write deadlines associated with the
// endpoint.
func (c *PacketConn) SetDeadline(t time.Time) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.PacketConn.SetDeadline(t)
}
// SetReadDeadline sets the read deadline associated with the
// endpoint.
func (c *PacketConn) SetReadDeadline(t time.Time) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.PacketConn.SetReadDeadline(t)
}
// SetWriteDeadline sets the write deadline associated with the
// endpoint.
func (c *PacketConn) SetWriteDeadline(t time.Time) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.PacketConn.SetWriteDeadline(t)
}
// Close closes the endpoint.
func (c *PacketConn) Close() error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.PacketConn.Close()
}
// NewPacketConn returns a new PacketConn using c as its underlying
// transport.
func NewPacketConn(c net.PacketConn) *PacketConn {
return &PacketConn{
genericOpt: genericOpt{Conn: c.(net.Conn)},
dgramOpt: dgramOpt{PacketConn: c},
payloadHandler: payloadHandler{PacketConn: c},
}
}
// A RawConn represents a packet network endpoint that uses the IPv4
// transport. It is used to control several IP-level socket options
// including IPv4 header manipulation. It also provides datagram
// based network I/O methods specific to the IPv4 and higher layer
// protocols that handle IPv4 datagram directly such as OSPF, GRE.
type RawConn struct {
genericOpt
dgramOpt
packetHandler
}
// SetControlMessage sets the per packet IP-level socket options.
func (c *RawConn) SetControlMessage(cf ControlFlags, on bool) error {
if !c.packetHandler.ok() {
return syscall.EINVAL
}
fd, err := c.packetHandler.sysfd()
if err != nil {
return err
}
return setControlMessage(fd, &c.packetHandler.rawOpt, cf, on)
}
// SetDeadline sets the read and write deadlines associated with the
// endpoint.
func (c *RawConn) SetDeadline(t time.Time) error {
if !c.packetHandler.ok() {
return syscall.EINVAL
}
return c.packetHandler.c.SetDeadline(t)
}
// SetReadDeadline sets the read deadline associated with the
// endpoint.
func (c *RawConn) SetReadDeadline(t time.Time) error {
if !c.packetHandler.ok() {
return syscall.EINVAL
}
return c.packetHandler.c.SetReadDeadline(t)
}
// SetWriteDeadline sets the write deadline associated with the
// endpoint.
func (c *RawConn) SetWriteDeadline(t time.Time) error {
if !c.packetHandler.ok() {
return syscall.EINVAL
}
return c.packetHandler.c.SetWriteDeadline(t)
}
// Close closes the endpoint.
func (c *RawConn) Close() error {
if !c.packetHandler.ok() {
return syscall.EINVAL
}
return c.packetHandler.c.Close()
}
// NewRawConn returns a new RawConn using c as its underlying
// transport.
func NewRawConn(c net.PacketConn) (*RawConn, error) {
r := &RawConn{
genericOpt: genericOpt{Conn: c.(net.Conn)},
dgramOpt: dgramOpt{PacketConn: c},
packetHandler: packetHandler{c: c.(*net.IPConn)},
}
fd, err := r.packetHandler.sysfd()
if err != nil {
return nil, err
}
if err := setInt(fd, &sockOpts[ssoHeaderPrepend], boolint(true)); err != nil {
return nil, err
}
return r, nil
}

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@ -1,59 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd windows
package ipv4
import "syscall"
// TOS returns the type-of-service field value for outgoing packets.
func (c *genericOpt) TOS() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return getInt(fd, &sockOpts[ssoTOS])
}
// SetTOS sets the type-of-service field value for future outgoing
// packets.
func (c *genericOpt) SetTOS(tos int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setInt(fd, &sockOpts[ssoTOS], tos)
}
// TTL returns the time-to-live field value for outgoing packets.
func (c *genericOpt) TTL() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return getInt(fd, &sockOpts[ssoTTL])
}
// SetTTL sets the time-to-live field value for future outgoing
// packets.
func (c *genericOpt) SetTTL(ttl int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setInt(fd, &sockOpts[ssoTTL], ttl)
}

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@ -1,27 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv4
func (c *genericOpt) TOS() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *genericOpt) SetTOS(tos int) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
func (c *genericOpt) TTL() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *genericOpt) SetTTL(ttl int) error {
// TODO(mikio): Implement this
return errOpNoSupport
}

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@ -1,163 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"errors"
"fmt"
"net"
"runtime"
"syscall"
"unsafe"
)
var (
errMissingAddress = errors.New("missing address")
errMissingHeader = errors.New("missing header")
errHeaderTooShort = errors.New("header too short")
errBufferTooShort = errors.New("buffer too short")
errInvalidConnType = errors.New("invalid conn type")
)
// References:
//
// RFC 791 Internet Protocol
// http://tools.ietf.org/html/rfc791
// RFC 1112 Host Extensions for IP Multicasting
// http://tools.ietf.org/html/rfc1112
// RFC 1122 Requirements for Internet Hosts
// http://tools.ietf.org/html/rfc1122
const (
Version = 4 // protocol version
HeaderLen = 20 // header length without extension headers
maxHeaderLen = 60 // sensible default, revisit if later RFCs define new usage of version and header length fields
)
const (
posTOS = 1 // type-of-service
posTotalLen = 2 // packet total length
posID = 4 // identification
posFragOff = 6 // fragment offset
posTTL = 8 // time-to-live
posProtocol = 9 // next protocol
posChecksum = 10 // checksum
posSrc = 12 // source address
posDst = 16 // destination address
)
type HeaderFlags int
const (
MoreFragments HeaderFlags = 1 << iota // more fragments flag
DontFragment // don't fragment flag
)
// A Header represents an IPv4 header.
type Header struct {
Version int // protocol version
Len int // header length
TOS int // type-of-service
TotalLen int // packet total length
ID int // identification
Flags HeaderFlags // flags
FragOff int // fragment offset
TTL int // time-to-live
Protocol int // next protocol
Checksum int // checksum
Src net.IP // source address
Dst net.IP // destination address
Options []byte // options, extension headers
}
func (h *Header) String() string {
if h == nil {
return "<nil>"
}
return fmt.Sprintf("ver: %v, hdrlen: %v, tos: %#x, totallen: %v, id: %#x, flags: %#x, fragoff: %#x, ttl: %v, proto: %v, cksum: %#x, src: %v, dst: %v", h.Version, h.Len, h.TOS, h.TotalLen, h.ID, h.Flags, h.FragOff, h.TTL, h.Protocol, h.Checksum, h.Src, h.Dst)
}
// Please refer to the online manual; IP(4) on Darwin, FreeBSD and
// OpenBSD. IP(7) on Linux.
const supportsNewIPInput = runtime.GOOS == "linux" || runtime.GOOS == "openbsd"
// Marshal returns the binary encoding of the IPv4 header h.
func (h *Header) Marshal() ([]byte, error) {
if h == nil {
return nil, syscall.EINVAL
}
if h.Len < HeaderLen {
return nil, errHeaderTooShort
}
hdrlen := HeaderLen + len(h.Options)
b := make([]byte, hdrlen)
b[0] = byte(Version<<4 | (hdrlen >> 2 & 0x0f))
b[posTOS] = byte(h.TOS)
flagsAndFragOff := (h.FragOff & 0x1fff) | int(h.Flags<<13)
if supportsNewIPInput {
b[posTotalLen], b[posTotalLen+1] = byte(h.TotalLen>>8), byte(h.TotalLen)
b[posFragOff], b[posFragOff+1] = byte(flagsAndFragOff>>8), byte(flagsAndFragOff)
} else {
*(*uint16)(unsafe.Pointer(&b[posTotalLen : posTotalLen+1][0])) = uint16(h.TotalLen)
*(*uint16)(unsafe.Pointer(&b[posFragOff : posFragOff+1][0])) = uint16(flagsAndFragOff)
}
b[posID], b[posID+1] = byte(h.ID>>8), byte(h.ID)
b[posTTL] = byte(h.TTL)
b[posProtocol] = byte(h.Protocol)
b[posChecksum], b[posChecksum+1] = byte(h.Checksum>>8), byte(h.Checksum)
if ip := h.Src.To4(); ip != nil {
copy(b[posSrc:posSrc+net.IPv4len], ip[:net.IPv4len])
}
if ip := h.Dst.To4(); ip != nil {
copy(b[posDst:posDst+net.IPv4len], ip[:net.IPv4len])
} else {
return nil, errMissingAddress
}
if len(h.Options) > 0 {
copy(b[HeaderLen:], h.Options)
}
return b, nil
}
// See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
var freebsdVersion uint32
// ParseHeader parses b as an IPv4 header.
func ParseHeader(b []byte) (*Header, error) {
if len(b) < HeaderLen {
return nil, errHeaderTooShort
}
hdrlen := int(b[0]&0x0f) << 2
if hdrlen > len(b) {
return nil, errBufferTooShort
}
h := &Header{}
h.Version = int(b[0] >> 4)
h.Len = hdrlen
h.TOS = int(b[posTOS])
if supportsNewIPInput {
h.TotalLen = int(b[posTotalLen])<<8 | int(b[posTotalLen+1])
h.FragOff = int(b[posFragOff])<<8 | int(b[posFragOff+1])
} else {
h.TotalLen = int(*(*uint16)(unsafe.Pointer(&b[posTotalLen : posTotalLen+1][0])))
if runtime.GOOS != "freebsd" || freebsdVersion < 1000000 {
h.TotalLen += hdrlen
}
h.FragOff = int(*(*uint16)(unsafe.Pointer(&b[posFragOff : posFragOff+1][0])))
}
h.Flags = HeaderFlags(h.FragOff&0xe000) >> 13
h.FragOff = h.FragOff & 0x1fff
h.ID = int(b[posID])<<8 | int(b[posID+1])
h.TTL = int(b[posTTL])
h.Protocol = int(b[posProtocol])
h.Checksum = int(b[posChecksum])<<8 | int(b[posChecksum+1])
h.Src = net.IPv4(b[posSrc], b[posSrc+1], b[posSrc+2], b[posSrc+3])
h.Dst = net.IPv4(b[posDst], b[posDst+1], b[posDst+2], b[posDst+3])
if hdrlen-HeaderLen > 0 {
h.Options = make([]byte, hdrlen-HeaderLen)
copy(h.Options, b[HeaderLen:])
}
return h, nil
}

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@ -1,37 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"errors"
"net"
)
var (
errOpNoSupport = errors.New("operation not supported")
errNoSuchInterface = errors.New("no such interface")
errNoSuchMulticastInterface = errors.New("no such multicast interface")
)
func boolint(b bool) int {
if b {
return 1
}
return 0
}
func netAddrToIP4(a net.Addr) net.IP {
switch v := a.(type) {
case *net.UDPAddr:
if ip := v.IP.To4(); ip != nil {
return ip
}
case *net.IPAddr:
if ip := v.IP.To4(); ip != nil {
return ip
}
}
return nil
}

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@ -1,27 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv4
func (c *genericOpt) sysfd() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *dgramOpt) sysfd() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *payloadHandler) sysfd() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *packetHandler) sysfd() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}

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@ -1,50 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd
package ipv4
import (
"net"
"reflect"
)
func (c *genericOpt) sysfd() (int, error) {
switch p := c.Conn.(type) {
case *net.TCPConn, *net.UDPConn, *net.IPConn:
return sysfd(p)
}
return 0, errInvalidConnType
}
func (c *dgramOpt) sysfd() (int, error) {
switch p := c.PacketConn.(type) {
case *net.UDPConn, *net.IPConn:
return sysfd(p.(net.Conn))
}
return 0, errInvalidConnType
}
func (c *payloadHandler) sysfd() (int, error) {
return sysfd(c.PacketConn.(net.Conn))
}
func (c *packetHandler) sysfd() (int, error) {
return sysfd(c.c)
}
func sysfd(c net.Conn) (int, error) {
cv := reflect.ValueOf(c)
switch ce := cv.Elem(); ce.Kind() {
case reflect.Struct:
netfd := ce.FieldByName("conn").FieldByName("fd")
switch fe := netfd.Elem(); fe.Kind() {
case reflect.Struct:
fd := fe.FieldByName("sysfd")
return int(fd.Int()), nil
}
}
return 0, errInvalidConnType
}

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@ -1,49 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"reflect"
"syscall"
)
func (c *genericOpt) sysfd() (syscall.Handle, error) {
switch p := c.Conn.(type) {
case *net.TCPConn, *net.UDPConn, *net.IPConn:
return sysfd(p)
}
return syscall.InvalidHandle, errInvalidConnType
}
func (c *dgramOpt) sysfd() (syscall.Handle, error) {
switch p := c.PacketConn.(type) {
case *net.UDPConn, *net.IPConn:
return sysfd(p.(net.Conn))
}
return syscall.InvalidHandle, errInvalidConnType
}
func (c *payloadHandler) sysfd() (syscall.Handle, error) {
return sysfd(c.PacketConn.(net.Conn))
}
func (c *packetHandler) sysfd() (syscall.Handle, error) {
return sysfd(c.c)
}
func sysfd(c net.Conn) (syscall.Handle, error) {
cv := reflect.ValueOf(c)
switch ce := cv.Elem(); ce.Kind() {
case reflect.Struct:
netfd := ce.FieldByName("conn").FieldByName("fd")
switch fe := netfd.Elem(); fe.Kind() {
case reflect.Struct:
fd := fe.FieldByName("sysfd")
return syscall.Handle(fd.Uint()), nil
}
}
return syscall.InvalidHandle, errInvalidConnType
}

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@ -1,34 +0,0 @@
// go generate gen.go
// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
package ipv4
// Internet Control Message Protocol (ICMP) Parameters, Updated: 2013-04-19
const (
ICMPTypeEchoReply ICMPType = 0 // Echo Reply
ICMPTypeDestinationUnreachable ICMPType = 3 // Destination Unreachable
ICMPTypeRedirect ICMPType = 5 // Redirect
ICMPTypeEcho ICMPType = 8 // Echo
ICMPTypeRouterAdvertisement ICMPType = 9 // Router Advertisement
ICMPTypeRouterSolicitation ICMPType = 10 // Router Solicitation
ICMPTypeTimeExceeded ICMPType = 11 // Time Exceeded
ICMPTypeParameterProblem ICMPType = 12 // Parameter Problem
ICMPTypeTimestamp ICMPType = 13 // Timestamp
ICMPTypeTimestampReply ICMPType = 14 // Timestamp Reply
ICMPTypePhoturis ICMPType = 40 // Photuris
)
// Internet Control Message Protocol (ICMP) Parameters, Updated: 2013-04-19
var icmpTypes = map[ICMPType]string{
0: "echo reply",
3: "destination unreachable",
5: "redirect",
8: "echo",
9: "router advertisement",
10: "router solicitation",
11: "time exceeded",
12: "parameter problem",
13: "timestamp",
14: "timestamp reply",
40: "photuris",
}

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@ -1,16 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
// An ICMPType represents a type of ICMP message.
type ICMPType int
func (typ ICMPType) String() string {
s, ok := icmpTypes[typ]
if !ok {
return "<nil>"
}
return s
}

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@ -1,97 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"syscall"
)
// A packetHandler represents the IPv4 datagram handler.
type packetHandler struct {
c *net.IPConn
rawOpt
}
func (c *packetHandler) ok() bool { return c != nil && c.c != nil }
// ReadFrom reads an IPv4 datagram from the endpoint c, copying the
// datagram into b. It returns the received datagram as the IPv4
// header h, the payload p and the control message cm.
func (c *packetHandler) ReadFrom(b []byte) (h *Header, p []byte, cm *ControlMessage, err error) {
if !c.ok() {
return nil, nil, nil, syscall.EINVAL
}
oob := newControlMessage(&c.rawOpt)
n, oobn, _, src, err := c.c.ReadMsgIP(b, oob)
if err != nil {
return nil, nil, nil, err
}
var hs []byte
if hs, p, err = slicePacket(b[:n]); err != nil {
return nil, nil, nil, err
}
if h, err = ParseHeader(hs); err != nil {
return nil, nil, nil, err
}
if cm, err = parseControlMessage(oob[:oobn]); err != nil {
return nil, nil, nil, err
}
if src != nil && cm != nil {
cm.Src = src.IP
}
return
}
func slicePacket(b []byte) (h, p []byte, err error) {
if len(b) < HeaderLen {
return nil, nil, errHeaderTooShort
}
hdrlen := int(b[0]&0x0f) << 2
return b[:hdrlen], b[hdrlen:], nil
}
// WriteTo writes an IPv4 datagram through the endpoint c, copying the
// datagram from the IPv4 header h and the payload p. The control
// message cm allows the datagram path and the outgoing interface to be
// specified. Currently only Darwin and Linux support this. The cm
// may be nil if control of the outgoing datagram is not required.
//
// The IPv4 header h must contain appropriate fields that include:
//
// Version = ipv4.Version
// Len = <must be specified>
// TOS = <must be specified>
// TotalLen = <must be specified>
// ID = platform sets an appropriate value if ID is zero
// FragOff = <must be specified>
// TTL = <must be specified>
// Protocol = <must be specified>
// Checksum = platform sets an appropriate value if Checksum is zero
// Src = platform sets an appropriate value if Src is nil
// Dst = <must be specified>
// Options = optional
func (c *packetHandler) WriteTo(h *Header, p []byte, cm *ControlMessage) error {
if !c.ok() {
return syscall.EINVAL
}
oob := marshalControlMessage(cm)
wh, err := h.Marshal()
if err != nil {
return err
}
dst := &net.IPAddr{}
if cm != nil {
if ip := cm.Dst.To4(); ip != nil {
dst.IP = ip
}
}
if dst.IP == nil {
dst.IP = h.Dst
}
wh = append(wh, p...)
_, _, err = c.c.WriteMsgIP(wh, oob, dst)
return err
}

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@ -1,15 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import "net"
// A payloadHandler represents the IPv4 datagram payload handler.
type payloadHandler struct {
net.PacketConn
rawOpt
}
func (c *payloadHandler) ok() bool { return c != nil && c.PacketConn != nil }

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@ -1,75 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !plan9,!solaris,!windows
package ipv4
import (
"net"
"syscall"
)
// ReadFrom reads a payload of the received IPv4 datagram, from the
// endpoint c, copying the payload into b. It returns the number of
// bytes copied into b, the control message cm and the source address
// src of the received datagram.
func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
if !c.ok() {
return 0, nil, nil, syscall.EINVAL
}
oob := newControlMessage(&c.rawOpt)
var oobn int
switch c := c.PacketConn.(type) {
case *net.UDPConn:
if n, oobn, _, src, err = c.ReadMsgUDP(b, oob); err != nil {
return 0, nil, nil, err
}
case *net.IPConn:
nb := make([]byte, maxHeaderLen+len(b))
if n, oobn, _, src, err = c.ReadMsgIP(nb, oob); err != nil {
return 0, nil, nil, err
}
hdrlen := int(nb[0]&0x0f) << 2
copy(b, nb[hdrlen:])
n -= hdrlen
default:
return 0, nil, nil, errInvalidConnType
}
if cm, err = parseControlMessage(oob[:oobn]); err != nil {
return 0, nil, nil, err
}
if cm != nil {
cm.Src = netAddrToIP4(src)
}
return
}
// WriteTo writes a payload of the IPv4 datagram, to the destination
// address dst through the endpoint c, copying the payload from b. It
// returns the number of bytes written. The control message cm allows
// the datagram path and the outgoing interface to be specified.
// Currently only Darwin and Darwin support this. The cm may be nil if
// control of the outgoing datagram is not required.
func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
if !c.ok() {
return 0, syscall.EINVAL
}
oob := marshalControlMessage(cm)
if dst == nil {
return 0, errMissingAddress
}
switch c := c.PacketConn.(type) {
case *net.UDPConn:
n, _, err = c.WriteMsgUDP(b, oob, dst.(*net.UDPAddr))
case *net.IPConn:
n, _, err = c.WriteMsgIP(b, oob, dst.(*net.IPAddr))
default:
return 0, errInvalidConnType
}
if err != nil {
return 0, err
}
return
}

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@ -1,42 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build plan9 solaris windows
package ipv4
import (
"net"
"syscall"
)
// ReadFrom reads a payload of the received IPv4 datagram, from the
// endpoint c, copying the payload into b. It returns the number of
// bytes copied into b, the control message cm and the source address
// src of the received datagram.
func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
if !c.ok() {
return 0, nil, nil, syscall.EINVAL
}
if n, src, err = c.PacketConn.ReadFrom(b); err != nil {
return 0, nil, nil, err
}
return
}
// WriteTo writes a payload of the IPv4 datagram, to the destination
// address dst through the endpoint c, copying the payload from b. It
// returns the number of bytes written. The control message cm allows
// the datagram path and the outgoing interface to be specified.
// Currently only Darwin and Linux support this. The cm may be nil if
// control of the outgoing datagram is not required.
func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
if !c.ok() {
return 0, syscall.EINVAL
}
if dst == nil {
return 0, errMissingAddress
}
return c.PacketConn.WriteTo(b, dst)
}

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@ -1,37 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
// Sticky socket options
const (
ssoTOS = iota // header field for unicast packet
ssoTTL // header field for unicast packet
ssoMulticastTTL // header field for multicast packet
ssoMulticastInterface // outbound interface for multicast packet
ssoMulticastLoopback // loopback for multicast packet
ssoReceiveTTL // header field on received packet
ssoReceiveDst // header field on received packet
ssoReceiveInterface // inbound interface on received packet
ssoPacketInfo // incbound or outbound packet path
ssoHeaderPrepend // ipv4 header
ssoJoinGroup // any-source multicast
ssoLeaveGroup // any-source multicast
ssoMax
)
// Sticky socket option value types
const (
ssoTypeByte = iota + 1
ssoTypeInt
ssoTypeInterface
ssoTypeIPMreq
ssoTypeIPMreqn
)
// A sockOpt represents a binding for sticky socket option.
type sockOpt struct {
name int // option name, must be equal or greater than 1
typ int // option value type, must be equal or greater than 1
}

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@ -1,83 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd netbsd openbsd windows
package ipv4
import "net"
func setIPMreqInterface(mreq *sysIPMreq, ifi *net.Interface) error {
if ifi == nil {
return nil
}
ifat, err := ifi.Addrs()
if err != nil {
return err
}
for _, ifa := range ifat {
switch ifa := ifa.(type) {
case *net.IPAddr:
if ip := ifa.IP.To4(); ip != nil {
copy(mreq.Interface[:], ip)
return nil
}
case *net.IPNet:
if ip := ifa.IP.To4(); ip != nil {
copy(mreq.Interface[:], ip)
return nil
}
}
}
return errNoSuchInterface
}
func netIP4ToInterface(ip net.IP) (*net.Interface, error) {
ift, err := net.Interfaces()
if err != nil {
return nil, err
}
for _, ifi := range ift {
ifat, err := ifi.Addrs()
if err != nil {
return nil, err
}
for _, ifa := range ifat {
switch ifa := ifa.(type) {
case *net.IPAddr:
if ip.Equal(ifa.IP) {
return &ifi, nil
}
case *net.IPNet:
if ip.Equal(ifa.IP) {
return &ifi, nil
}
}
}
}
return nil, errNoSuchInterface
}
func netInterfaceToIP4(ifi *net.Interface) (net.IP, error) {
if ifi == nil {
return net.IPv4zero.To4(), nil
}
ifat, err := ifi.Addrs()
if err != nil {
return nil, err
}
for _, ifa := range ifat {
switch ifa := ifa.(type) {
case *net.IPAddr:
if ip := ifa.IP.To4(); ip != nil {
return ip, nil
}
case *net.IPNet:
if ip := ifa.IP.To4(); ip != nil {
return ip, nil
}
}
}
return nil, errNoSuchInterface
}

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@ -1,21 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !darwin,!dragonfly,!freebsd,!netbsd,!openbsd,!windows
package ipv4
import "net"
func setsockoptIPMreq(fd, name int, ifi *net.Interface, grp net.IP) error {
return errOpNoSupport
}
func getsockoptInterface(fd, name int) (*net.Interface, error) {
return nil, errOpNoSupport
}
func setsockoptInterface(fd, name int, ifi *net.Interface) error {
return errOpNoSupport
}

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@ -1,46 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd netbsd openbsd
package ipv4
import (
"net"
"os"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func setsockoptIPMreq(fd, name int, ifi *net.Interface, grp net.IP) error {
mreq := sysIPMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
if err := setIPMreqInterface(&mreq, ifi); err != nil {
return err
}
return os.NewSyscallError("setsockopt", setsockopt(fd, iana.ProtocolIP, name, unsafe.Pointer(&mreq), sysSizeofIPMreq))
}
func getsockoptInterface(fd, name int) (*net.Interface, error) {
var b [4]byte
l := sysSockoptLen(4)
if err := getsockopt(fd, iana.ProtocolIP, name, unsafe.Pointer(&b[0]), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
ifi, err := netIP4ToInterface(net.IPv4(b[0], b[1], b[2], b[3]))
if err != nil {
return nil, err
}
return ifi, nil
}
func setsockoptInterface(fd, name int, ifi *net.Interface) error {
ip, err := netInterfaceToIP4(ifi)
if err != nil {
return err
}
var b [4]byte
copy(b[:], ip)
return os.NewSyscallError("setsockopt", setsockopt(fd, iana.ProtocolIP, name, unsafe.Pointer(&b[0]), sysSockoptLen(4)))
}

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@ -1,45 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"os"
"syscall"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func setsockoptIPMreq(fd syscall.Handle, name int, ifi *net.Interface, grp net.IP) error {
mreq := sysIPMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
if err := setIPMreqInterface(&mreq, ifi); err != nil {
return err
}
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, iana.ProtocolIP, int32(name), (*byte)(unsafe.Pointer(&mreq)), int32(sysSizeofIPMreq)))
}
func getsockoptInterface(fd syscall.Handle, name int) (*net.Interface, error) {
var b [4]byte
l := int32(4)
if err := syscall.Getsockopt(fd, iana.ProtocolIP, int32(name), (*byte)(unsafe.Pointer(&b[0])), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
ifi, err := netIP4ToInterface(net.IPv4(b[0], b[1], b[2], b[3]))
if err != nil {
return nil, err
}
return ifi, nil
}
func setsockoptInterface(fd syscall.Handle, name int, ifi *net.Interface) error {
ip, err := netInterfaceToIP4(ifi)
if err != nil {
return err
}
var b [4]byte
copy(b[:], ip)
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, iana.ProtocolIP, int32(name), (*byte)(unsafe.Pointer(&b[0])), 4))
}

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@ -1,17 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !darwin,!freebsd,!linux,!windows
package ipv4
import "net"
func getsockoptIPMreqn(fd, name int) (*net.Interface, error) {
return nil, errOpNoSupport
}
func setsockoptIPMreqn(fd, name int, ifi *net.Interface, grp net.IP) error {
return errOpNoSupport
}

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@ -1,42 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin freebsd linux
package ipv4
import (
"net"
"os"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func getsockoptIPMreqn(fd, name int) (*net.Interface, error) {
var mreqn sysIPMreqn
l := sysSockoptLen(sysSizeofIPMreqn)
if err := getsockopt(fd, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
if mreqn.Ifindex == 0 {
return nil, nil
}
ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex))
if err != nil {
return nil, err
}
return ifi, nil
}
func setsockoptIPMreqn(fd, name int, ifi *net.Interface, grp net.IP) error {
var mreqn sysIPMreqn
if ifi != nil {
mreqn.Ifindex = int32(ifi.Index)
}
if grp != nil {
mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]}
}
return os.NewSyscallError("setsockopt", setsockopt(fd, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), sysSizeofIPMreqn))
}

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@ -1,29 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv4
import "net"
func getInt(fd int, opt *sockOpt) (int, error) {
return 0, errOpNoSupport
}
func setInt(fd int, opt *sockOpt, v int) error {
return errOpNoSupport
}
func getInterface(fd int, opt *sockOpt) (*net.Interface, error) {
return nil, errOpNoSupport
}
func setInterface(fd int, opt *sockOpt, ifi *net.Interface) error {
return errOpNoSupport
}
func setGroup(fd int, opt *sockOpt, ifi *net.Interface, ip net.IP) error {
return errOpNoSupport
}

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@ -1,94 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd
package ipv4
import (
"net"
"os"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func getInt(fd int, opt *sockOpt) (int, error) {
if opt.name < 1 || (opt.typ != ssoTypeByte && opt.typ != ssoTypeInt) {
return 0, errOpNoSupport
}
var i int32
var b byte
p := unsafe.Pointer(&i)
l := sysSockoptLen(4)
if opt.typ == ssoTypeByte {
p = unsafe.Pointer(&b)
l = sysSockoptLen(1)
}
if err := getsockopt(fd, iana.ProtocolIP, opt.name, p, &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
if opt.typ == ssoTypeByte {
return int(b), nil
}
return int(i), nil
}
func setInt(fd int, opt *sockOpt, v int) error {
if opt.name < 1 || (opt.typ != ssoTypeByte && opt.typ != ssoTypeInt) {
return errOpNoSupport
}
i := int32(v)
var b byte
p := unsafe.Pointer(&i)
l := sysSockoptLen(4)
if opt.typ == ssoTypeByte {
b = byte(v)
p = unsafe.Pointer(&b)
l = sysSockoptLen(1)
}
return os.NewSyscallError("setsockopt", setsockopt(fd, iana.ProtocolIP, opt.name, p, l))
}
func getInterface(fd int, opt *sockOpt) (*net.Interface, error) {
if opt.name < 1 {
return nil, errOpNoSupport
}
switch opt.typ {
case ssoTypeInterface:
return getsockoptInterface(fd, opt.name)
case ssoTypeIPMreqn:
return getsockoptIPMreqn(fd, opt.name)
default:
return nil, errOpNoSupport
}
}
func setInterface(fd int, opt *sockOpt, ifi *net.Interface) error {
if opt.name < 1 {
return errOpNoSupport
}
switch opt.typ {
case ssoTypeInterface:
return setsockoptInterface(fd, opt.name, ifi)
case ssoTypeIPMreqn:
return setsockoptIPMreqn(fd, opt.name, ifi, nil)
default:
return errOpNoSupport
}
}
func setGroup(fd int, opt *sockOpt, ifi *net.Interface, grp net.IP) error {
if opt.name < 1 {
return errOpNoSupport
}
switch opt.typ {
case ssoTypeIPMreq:
return setsockoptIPMreq(fd, opt.name, ifi, grp)
case ssoTypeIPMreqn:
return setsockoptIPMreqn(fd, opt.name, ifi, grp)
default:
return errOpNoSupport
}
}

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@ -1,55 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"os"
"syscall"
"unsafe"
"github.com/hashicorp/go.net/internal/iana"
)
func getInt(fd syscall.Handle, opt *sockOpt) (int, error) {
if opt.name < 1 || opt.typ != ssoTypeInt {
return 0, errOpNoSupport
}
var i int32
l := int32(4)
if err := syscall.Getsockopt(fd, iana.ProtocolIP, int32(opt.name), (*byte)(unsafe.Pointer(&i)), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(i), nil
}
func setInt(fd syscall.Handle, opt *sockOpt, v int) error {
if opt.name < 1 || opt.typ != ssoTypeInt {
return errOpNoSupport
}
i := int32(v)
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, iana.ProtocolIP, int32(opt.name), (*byte)(unsafe.Pointer(&i)), 4))
}
func getInterface(fd syscall.Handle, opt *sockOpt) (*net.Interface, error) {
if opt.name < 1 || opt.typ != ssoTypeInterface {
return nil, errOpNoSupport
}
return getsockoptInterface(fd, opt.name)
}
func setInterface(fd syscall.Handle, opt *sockOpt, ifi *net.Interface) error {
if opt.name < 1 || opt.typ != ssoTypeInterface {
return errOpNoSupport
}
return setsockoptInterface(fd, opt.name, ifi)
}
func setGroup(fd syscall.Handle, opt *sockOpt, ifi *net.Interface, grp net.IP) error {
if opt.name < 1 || opt.typ != ssoTypeIPMreq {
return errOpNoSupport
}
return setsockoptIPMreq(fd, opt.name, ifi, grp)
}

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@ -1,36 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build dragonfly netbsd
package ipv4
import (
"net"
"syscall"
)
type sysSockoptLen int32
var (
ctlOpts = [ctlMax]ctlOpt{
ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
}
sockOpts = [ssoMax]sockOpt{
ssoTOS: {sysIP_TOS, ssoTypeInt},
ssoTTL: {sysIP_TTL, ssoTypeInt},
ssoMulticastTTL: {sysIP_MULTICAST_TTL, ssoTypeByte},
ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
ssoMulticastLoopback: {sysIP_MULTICAST_LOOP, ssoTypeInt},
ssoReceiveTTL: {sysIP_RECVTTL, ssoTypeInt},
ssoReceiveDst: {sysIP_RECVDSTADDR, ssoTypeInt},
ssoReceiveInterface: {sysIP_RECVIF, ssoTypeInt},
ssoHeaderPrepend: {sysIP_HDRINCL, ssoTypeInt},
ssoJoinGroup: {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
ssoLeaveGroup: {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
}
)

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@ -1,64 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"syscall"
)
type sysSockoptLen int32
var (
ctlOpts = [ctlMax]ctlOpt{
ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
}
sockOpts = [ssoMax]sockOpt{
ssoTOS: {sysIP_TOS, ssoTypeInt},
ssoTTL: {sysIP_TTL, ssoTypeInt},
ssoMulticastTTL: {sysIP_MULTICAST_TTL, ssoTypeByte},
ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
ssoMulticastLoopback: {sysIP_MULTICAST_LOOP, ssoTypeInt},
ssoReceiveTTL: {sysIP_RECVTTL, ssoTypeInt},
ssoReceiveDst: {sysIP_RECVDSTADDR, ssoTypeInt},
ssoReceiveInterface: {sysIP_RECVIF, ssoTypeInt},
ssoHeaderPrepend: {sysIP_HDRINCL, ssoTypeInt},
ssoJoinGroup: {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
ssoLeaveGroup: {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
}
)
func init() {
// Seems like kern.osreldate is veiled on latest OS X. We use
// kern.osrelease instead.
osver, err := syscall.Sysctl("kern.osrelease")
if err != nil {
return
}
var i int
for i = range osver {
if osver[i] != '.' {
continue
}
}
// The IP_PKTINFO was introduced in OS X 10.7 (Darwin
// 11.0.0). See http://support.apple.com/kb/HT1633.
if i > 2 || i == 2 && osver[0] >= '1' && osver[1] >= '1' {
ctlOpts[ctlPacketInfo].name = sysIP_PKTINFO
ctlOpts[ctlPacketInfo].length = sysSizeofInetPktinfo
ctlOpts[ctlPacketInfo].marshal = marshalPacketInfo
ctlOpts[ctlPacketInfo].parse = parsePacketInfo
sockOpts[ssoPacketInfo].name = sysIP_RECVPKTINFO
sockOpts[ssoPacketInfo].typ = ssoTypeInt
sockOpts[ssoMulticastInterface].typ = ssoTypeIPMreqn
}
}
func (pi *sysInetPktinfo) setIfindex(i int) {
pi.Ifindex = uint32(i)
}

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@ -1,41 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"syscall"
)
type sysSockoptLen int32
var (
ctlOpts = [ctlMax]ctlOpt{
ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
}
sockOpts = [ssoMax]sockOpt{
ssoTOS: {sysIP_TOS, ssoTypeInt},
ssoTTL: {sysIP_TTL, ssoTypeInt},
ssoMulticastTTL: {sysIP_MULTICAST_TTL, ssoTypeByte},
ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
ssoMulticastLoopback: {sysIP_MULTICAST_LOOP, ssoTypeInt},
ssoReceiveTTL: {sysIP_RECVTTL, ssoTypeInt},
ssoReceiveDst: {sysIP_RECVDSTADDR, ssoTypeInt},
ssoReceiveInterface: {sysIP_RECVIF, ssoTypeInt},
ssoHeaderPrepend: {sysIP_HDRINCL, ssoTypeInt},
ssoJoinGroup: {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
ssoLeaveGroup: {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
}
)
func init() {
freebsdVersion, _ = syscall.SysctlUint32("kern.osreldate")
if freebsdVersion >= 1000000 {
sockOpts[ssoMulticastInterface].typ = ssoTypeIPMreqn
}
}

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@ -1,31 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
type sysSockoptLen int32
var (
ctlOpts = [ctlMax]ctlOpt{
ctlTTL: {sysIP_TTL, 1, marshalTTL, parseTTL},
ctlPacketInfo: {sysIP_PKTINFO, sysSizeofInetPktinfo, marshalPacketInfo, parsePacketInfo},
}
sockOpts = [ssoMax]sockOpt{
ssoTOS: {sysIP_TOS, ssoTypeInt},
ssoTTL: {sysIP_TTL, ssoTypeInt},
ssoMulticastTTL: {sysIP_MULTICAST_TTL, ssoTypeInt},
ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeIPMreqn},
ssoMulticastLoopback: {sysIP_MULTICAST_LOOP, ssoTypeInt},
ssoReceiveTTL: {sysIP_RECVTTL, ssoTypeInt},
ssoPacketInfo: {sysIP_PKTINFO, ssoTypeInt},
ssoHeaderPrepend: {sysIP_HDRINCL, ssoTypeInt},
ssoJoinGroup: {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreqn},
ssoLeaveGroup: {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreqn},
}
)
func (pi *sysInetPktinfo) setIfindex(i int) {
pi.Ifindex = int32(i)
}

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@ -1,34 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"net"
"syscall"
)
type sysSockoptLen int32
var (
ctlOpts = [ctlMax]ctlOpt{
ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
}
sockOpts = [ssoMax]sockOpt{
ssoTOS: {sysIP_TOS, ssoTypeInt},
ssoTTL: {sysIP_TTL, ssoTypeInt},
ssoMulticastTTL: {sysIP_MULTICAST_TTL, ssoTypeByte},
ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
ssoMulticastLoopback: {sysIP_MULTICAST_LOOP, ssoTypeByte},
ssoReceiveTTL: {sysIP_RECVTTL, ssoTypeInt},
ssoReceiveDst: {sysIP_RECVDSTADDR, ssoTypeInt},
ssoReceiveInterface: {sysIP_RECVIF, ssoTypeInt},
ssoHeaderPrepend: {sysIP_HDRINCL, ssoTypeInt},
ssoJoinGroup: {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
ssoLeaveGroup: {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
}
)

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@ -1,15 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv4
type sysSockoptLen int32
var (
ctlOpts = [ctlMax]ctlOpt{}
sockOpts = [ssoMax]sockOpt{}
)

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@ -1,61 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
const (
// See ws2tcpip.h.
sysIP_OPTIONS = 0x1
sysIP_HDRINCL = 0x2
sysIP_TOS = 0x3
sysIP_TTL = 0x4
sysIP_MULTICAST_IF = 0x9
sysIP_MULTICAST_TTL = 0xa
sysIP_MULTICAST_LOOP = 0xb
sysIP_ADD_MEMBERSHIP = 0xc
sysIP_DROP_MEMBERSHIP = 0xd
sysIP_DONTFRAGMENT = 0xe
sysIP_ADD_SOURCE_MEMBERSHIP = 0xf
sysIP_DROP_SOURCE_MEMBERSHIP = 0x10
sysIP_PKTINFO = 0x13
sysSizeofInetPktinfo = 0x8
sysSizeofIPMreq = 0x8
sysSizeofIPMreqSource = 0xc
)
type sysInetPktinfo struct {
Addr [4]byte
Ifindex int32
}
type sysIPMreq struct {
Multiaddr [4]byte
Interface [4]byte
}
type sysIPMreqSource struct {
Multiaddr [4]byte
Sourceaddr [4]byte
Interface [4]byte
}
// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms738586(v=vs.85).aspx
var (
ctlOpts = [ctlMax]ctlOpt{}
sockOpts = [ssoMax]sockOpt{
ssoTOS: {sysIP_TOS, ssoTypeInt},
ssoTTL: {sysIP_TTL, ssoTypeInt},
ssoMulticastTTL: {sysIP_MULTICAST_TTL, ssoTypeInt},
ssoMulticastInterface: {sysIP_MULTICAST_IF, ssoTypeInterface},
ssoMulticastLoopback: {sysIP_MULTICAST_LOOP, ssoTypeInt},
ssoJoinGroup: {sysIP_ADD_MEMBERSHIP, ssoTypeIPMreq},
ssoLeaveGroup: {sysIP_DROP_MEMBERSHIP, ssoTypeIPMreq},
}
)
func (pi *sysInetPktinfo) setIfindex(i int) {
pi.Ifindex = int32(i)
}

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@ -1,31 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv4
import (
"syscall"
"unsafe"
)
const (
sysGETSOCKOPT = 0xf
sysSETSOCKOPT = 0xe
)
func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (int, syscall.Errno)
func getsockopt(fd, level, name int, v unsafe.Pointer, l *sysSockoptLen) error {
if _, errno := socketcall(sysGETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0); errno != 0 {
return error(errno)
}
return nil
}
func setsockopt(fd, level, name int, v unsafe.Pointer, l sysSockoptLen) error {
if _, errno := socketcall(sysSETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
return error(errno)
}
return nil
}

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@ -1,26 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux,amd64 linux,arm netbsd openbsd
package ipv4
import (
"syscall"
"unsafe"
)
func getsockopt(fd, level, name int, v unsafe.Pointer, l *sysSockoptLen) error {
if _, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0); errno != 0 {
return error(errno)
}
return nil
}
func setsockopt(fd, level, name int, v unsafe.Pointer, l sysSockoptLen) error {
if _, _, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
return error(errno)
}
return nil
}

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@ -1,8 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.2
TEXT ·socketcall(SB),4,$0-36
JMP syscall·socketcall(SB)

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@ -1,62 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_darwin.go
package ipv4
const (
sysIP_OPTIONS = 0x1
sysIP_HDRINCL = 0x2
sysIP_TOS = 0x3
sysIP_TTL = 0x4
sysIP_RECVOPTS = 0x5
sysIP_RECVRETOPTS = 0x6
sysIP_RECVDSTADDR = 0x7
sysIP_RETOPTS = 0x8
sysIP_RECVIF = 0x14
sysIP_STRIPHDR = 0x17
sysIP_RECVTTL = 0x18
sysIP_BOUND_IF = 0x19
sysIP_PKTINFO = 0x1a
sysIP_RECVPKTINFO = 0x1a
sysIP_MULTICAST_IF = 0x9
sysIP_MULTICAST_TTL = 0xa
sysIP_MULTICAST_LOOP = 0xb
sysIP_ADD_MEMBERSHIP = 0xc
sysIP_DROP_MEMBERSHIP = 0xd
sysIP_MULTICAST_VIF = 0xe
sysIP_MULTICAST_IFINDEX = 0x42
sysIP_ADD_SOURCE_MEMBERSHIP = 0x46
sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
sysIP_BLOCK_SOURCE = 0x48
sysIP_UNBLOCK_SOURCE = 0x49
sysSizeofInetPktinfo = 0xc
sysSizeofIPMreq = 0x8
sysSizeofIPMreqn = 0xc
sysSizeofIPMreqSource = 0xc
)
type sysInetPktinfo struct {
Ifindex uint32
Spec_dst [4]byte /* in_addr */
Addr [4]byte /* in_addr */
}
type sysIPMreq struct {
Multiaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}
type sysIPMreqn struct {
Multiaddr [4]byte /* in_addr */
Address [4]byte /* in_addr */
Ifindex int32
}
type sysIPMreqSource struct {
Multiaddr [4]byte /* in_addr */
Sourceaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}

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@ -1,33 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_dragonfly.go
// +build dragonfly
package ipv4
const (
sysIP_OPTIONS = 0x1
sysIP_HDRINCL = 0x2
sysIP_TOS = 0x3
sysIP_TTL = 0x4
sysIP_RECVOPTS = 0x5
sysIP_RECVRETOPTS = 0x6
sysIP_RECVDSTADDR = 0x7
sysIP_RETOPTS = 0x8
sysIP_RECVIF = 0x14
sysIP_RECVTTL = 0x41
sysIP_MULTICAST_IF = 0x9
sysIP_MULTICAST_TTL = 0xa
sysIP_MULTICAST_LOOP = 0xb
sysIP_MULTICAST_VIF = 0xe
sysIP_ADD_MEMBERSHIP = 0xc
sysIP_DROP_MEMBERSHIP = 0xd
sysSizeofIPMreq = 0x8
)
type sysIPMreq struct {
Multiaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}

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@ -1,55 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_freebsd.go
package ipv4
const (
sysIP_OPTIONS = 0x1
sysIP_HDRINCL = 0x2
sysIP_TOS = 0x3
sysIP_TTL = 0x4
sysIP_RECVOPTS = 0x5
sysIP_RECVRETOPTS = 0x6
sysIP_RECVDSTADDR = 0x7
sysIP_SENDSRCADDR = 0x7
sysIP_RETOPTS = 0x8
sysIP_RECVIF = 0x14
sysIP_ONESBCAST = 0x17
sysIP_BINDANY = 0x18
sysIP_RECVTTL = 0x41
sysIP_MINTTL = 0x42
sysIP_DONTFRAG = 0x43
sysIP_RECVTOS = 0x44
sysIP_MULTICAST_IF = 0x9
sysIP_MULTICAST_TTL = 0xa
sysIP_MULTICAST_LOOP = 0xb
sysIP_ADD_MEMBERSHIP = 0xc
sysIP_DROP_MEMBERSHIP = 0xd
sysIP_MULTICAST_VIF = 0xe
sysIP_ADD_SOURCE_MEMBERSHIP = 0x46
sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
sysIP_BLOCK_SOURCE = 0x48
sysIP_UNBLOCK_SOURCE = 0x49
sysSizeofIPMreq = 0x8
sysSizeofIPMreqn = 0xc
sysSizeofIPMreqSource = 0xc
)
type sysIPMreq struct {
Multiaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}
type sysIPMreqn struct {
Multiaddr [4]byte /* in_addr */
Address [4]byte /* in_addr */
Ifindex int32
}
type sysIPMreqSource struct {
Multiaddr [4]byte /* in_addr */
Sourceaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}

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@ -1,94 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_linux.go
package ipv4
const (
sysIP_TOS = 0x1
sysIP_TTL = 0x2
sysIP_HDRINCL = 0x3
sysIP_OPTIONS = 0x4
sysIP_ROUTER_ALERT = 0x5
sysIP_RECVOPTS = 0x6
sysIP_RETOPTS = 0x7
sysIP_PKTINFO = 0x8
sysIP_PKTOPTIONS = 0x9
sysIP_MTU_DISCOVER = 0xa
sysIP_RECVERR = 0xb
sysIP_RECVTTL = 0xc
sysIP_RECVTOS = 0xd
sysIP_MTU = 0xe
sysIP_FREEBIND = 0xf
sysIP_TRANSPARENT = 0x13
sysIP_RECVRETOPTS = 0x7
sysIP_ORIGDSTADDR = 0x14
sysIP_RECVORIGDSTADDR = 0x14
sysIP_MINTTL = 0x15
sysIP_NODEFRAG = 0x16
sysIP_UNICAST_IF = 0x32
sysIP_MULTICAST_IF = 0x20
sysIP_MULTICAST_TTL = 0x21
sysIP_MULTICAST_LOOP = 0x22
sysIP_ADD_MEMBERSHIP = 0x23
sysIP_DROP_MEMBERSHIP = 0x24
sysIP_UNBLOCK_SOURCE = 0x25
sysIP_BLOCK_SOURCE = 0x26
sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
sysIP_MULTICAST_ALL = 0x31
sysIP_PMTUDISC_DONT = 0x0
sysIP_PMTUDISC_WANT = 0x1
sysIP_PMTUDISC_DO = 0x2
sysIP_PMTUDISC_PROBE = 0x3
sysIP_PMTUDISC_INTERFACE = 0x4
sysIP_PMTUDISC_OMIT = 0x5
sysSO_EE_ORIGIN_NONE = 0x0
sysSO_EE_ORIGIN_LOCAL = 0x1
sysSO_EE_ORIGIN_ICMP = 0x2
sysSO_EE_ORIGIN_ICMP6 = 0x3
sysSO_EE_ORIGIN_TXSTATUS = 0x4
sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
sysSizeofInetPktinfo = 0xc
sysSizeofSockExtendedErr = 0x10
sysSizeofIPMreq = 0x8
sysSizeofIPMreqn = 0xc
sysSizeofIPMreqSource = 0xc
)
type sysInetPktinfo struct {
Ifindex int32
Spec_dst [4]byte /* in_addr */
Addr [4]byte /* in_addr */
}
type sysSockExtendedErr struct {
Errno uint32
Origin uint8
Type uint8
Code uint8
Pad uint8
Info uint32
Data uint32
}
type sysIPMreq struct {
Multiaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}
type sysIPMreqn struct {
Multiaddr [4]byte /* in_addr */
Address [4]byte /* in_addr */
Ifindex int32
}
type sysIPMreqSource struct {
Multiaddr uint32
Interface uint32
Sourceaddr uint32
}

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@ -1,30 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_netbsd.go
package ipv4
const (
sysIP_OPTIONS = 0x1
sysIP_HDRINCL = 0x2
sysIP_TOS = 0x3
sysIP_TTL = 0x4
sysIP_RECVOPTS = 0x5
sysIP_RECVRETOPTS = 0x6
sysIP_RECVDSTADDR = 0x7
sysIP_RETOPTS = 0x8
sysIP_RECVIF = 0x14
sysIP_RECVTTL = 0x17
sysIP_MULTICAST_IF = 0x9
sysIP_MULTICAST_TTL = 0xa
sysIP_MULTICAST_LOOP = 0xb
sysIP_ADD_MEMBERSHIP = 0xc
sysIP_DROP_MEMBERSHIP = 0xd
sysSizeofIPMreq = 0x8
)
type sysIPMreq struct {
Multiaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}

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@ -1,30 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_openbsd.go
package ipv4
const (
sysIP_OPTIONS = 0x1
sysIP_HDRINCL = 0x2
sysIP_TOS = 0x3
sysIP_TTL = 0x4
sysIP_RECVOPTS = 0x5
sysIP_RECVRETOPTS = 0x6
sysIP_RECVDSTADDR = 0x7
sysIP_RETOPTS = 0x8
sysIP_RECVIF = 0x1e
sysIP_RECVTTL = 0x1f
sysIP_MULTICAST_IF = 0x9
sysIP_MULTICAST_TTL = 0xa
sysIP_MULTICAST_LOOP = 0xb
sysIP_ADD_MEMBERSHIP = 0xc
sysIP_DROP_MEMBERSHIP = 0xd
sysSizeofIPMreq = 0x8
)
type sysIPMreq struct {
Multiaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}

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@ -1,60 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_solaris.go
// +build solaris
package ipv4
const (
sysIP_OPTIONS = 0x1
sysIP_HDRINCL = 0x2
sysIP_TOS = 0x3
sysIP_TTL = 0x4
sysIP_RECVOPTS = 0x5
sysIP_RECVRETOPTS = 0x6
sysIP_RECVDSTADDR = 0x7
sysIP_RETOPTS = 0x8
sysIP_RECVIF = 0x9
sysIP_RECVSLLA = 0xa
sysIP_RECVTTL = 0xb
sysIP_NEXTHOP = 0x19
sysIP_PKTINFO = 0x1a
sysIP_RECVPKTINFO = 0x1a
sysIP_DONTFRAG = 0x1b
sysIP_BOUND_IF = 0x41
sysIP_UNSPEC_SRC = 0x42
sysIP_BROADCAST_TTL = 0x43
sysIP_DHCPINIT_IF = 0x45
sysIP_MULTICAST_IF = 0x10
sysIP_MULTICAST_TTL = 0x11
sysIP_MULTICAST_LOOP = 0x12
sysIP_ADD_MEMBERSHIP = 0x13
sysIP_DROP_MEMBERSHIP = 0x14
sysIP_BLOCK_SOURCE = 0x15
sysIP_UNBLOCK_SOURCE = 0x16
sysIP_ADD_SOURCE_MEMBERSHIP = 0x17
sysIP_DROP_SOURCE_MEMBERSHIP = 0x18
sysSizeofInetPktinfo = 0xc
sysSizeofIPMreq = 0x8
sysSizeofIPMreqSource = 0xc
)
type sysInetPktinfo struct {
Ifindex uint32
Spec_dst [4]byte /* in_addr */
Addr [4]byte /* in_addr */
}
type sysIPMreq struct {
Multiaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}
type sysIPMreqSource struct {
Multiaddr [4]byte /* in_addr */
Sourceaddr [4]byte /* in_addr */
Interface [4]byte /* in_addr */
}

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@ -1,83 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"errors"
"fmt"
"net"
"sync"
)
var (
errMissingAddress = errors.New("missing address")
errInvalidConnType = errors.New("invalid conn type")
errNoSuchInterface = errors.New("no such interface")
)
// References:
//
// RFC 2292 Advanced Sockets API for IPv6
// http://tools.ietf.org/html/rfc2292
// RFC 2460 Internet Protocol, Version 6 (IPv6) Specification
// http://tools.ietf.org/html/rfc2460
// RFC 3493 Basic Socket Interface Extensions for IPv6
// http://tools.ietf.org/html/rfc3493.html
// RFC 3542 Advanced Sockets Application Program Interface (API) for IPv6
// http://tools.ietf.org/html/rfc3542
//
// Note that RFC 3542 obsoletes RFC 2292 but OS X Snow Leopard and the
// former still support RFC 2292 only. Please be aware that almost
// all protocol implementations prohibit using a combination of RFC
// 2292 and RFC 3542 for some practical reasons.
type rawOpt struct {
sync.Mutex
cflags ControlFlags
}
func (c *rawOpt) set(f ControlFlags) { c.cflags |= f }
func (c *rawOpt) clear(f ControlFlags) { c.cflags &^= f }
func (c *rawOpt) isset(f ControlFlags) bool { return c.cflags&f != 0 }
// A ControlFlags represents per packet basis IP-level socket option
// control flags.
type ControlFlags uint
const (
FlagTrafficClass ControlFlags = 1 << iota // pass the traffic class on the received packet
FlagHopLimit // pass the hop limit on the received packet
FlagSrc // pass the source address on the received packet
FlagDst // pass the destination address on the received packet
FlagInterface // pass the interface index on the received packet
FlagPathMTU // pass the path MTU on the received packet path
)
// A ControlMessage represents per packet basis IP-level socket
// options.
type ControlMessage struct {
// Receiving socket options: SetControlMessage allows to
// receive the options from the protocol stack using ReadFrom
// method of PacketConn.
//
// Specifying socket options: ControlMessage for WriteTo
// method of PacketConn allows to send the options to the
// protocol stack.
//
TrafficClass int // traffic class, must be 1 <= value <= 255 when specifying
HopLimit int // hop limit, must be 1 <= value <= 255 when specifying
Src net.IP // source address, specifying only
Dst net.IP // destination address, receiving only
IfIndex int // interface index, must be 1 <= value when specifying
NextHop net.IP // next hop address, specifying only
MTU int // path MTU, receiving only
}
func (cm *ControlMessage) String() string {
if cm == nil {
return "<nil>"
}
return fmt.Sprintf("tclass: %#x, hoplim: %v, src: %v, dst: %v, ifindex: %v, nexthop: %v, mtu: %v", cm.TrafficClass, cm.HopLimit, cm.Src, cm.Dst, cm.IfIndex, cm.NextHop, cm.MTU)
}

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@ -1,151 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin
package ipv6
import (
"net"
"os"
"syscall"
"unsafe"
)
const pktinfo = FlagDst | FlagInterface
func setControlMessage(fd int, opt *rawOpt, cf ControlFlags, on bool) error {
opt.Lock()
defer opt.Unlock()
if cf&FlagHopLimit != 0 {
if err := setIPv6ReceiveHopLimit(fd, on); err != nil {
return err
}
if on {
opt.set(FlagHopLimit)
} else {
opt.clear(FlagHopLimit)
}
}
if cf&pktinfo != 0 {
if err := setIPv6ReceivePacketInfo(fd, on); err != nil {
return err
}
if on {
opt.set(cf & pktinfo)
} else {
opt.clear(cf & pktinfo)
}
}
return nil
}
func newControlMessage(opt *rawOpt) (oob []byte) {
opt.Lock()
defer opt.Unlock()
l, off := 0, 0
if opt.isset(FlagHopLimit) {
l += syscall.CmsgSpace(4)
}
if opt.isset(pktinfo) {
l += syscall.CmsgSpace(sysSizeofPacketInfo)
}
if l > 0 {
oob = make([]byte, l)
if opt.isset(FlagHopLimit) {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockopt2292HopLimit
m.SetLen(syscall.CmsgLen(4))
off += syscall.CmsgSpace(4)
}
if opt.isset(pktinfo) {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockopt2292PacketInfo
m.SetLen(syscall.CmsgLen(sysSizeofPacketInfo))
off += syscall.CmsgSpace(sysSizeofPacketInfo)
}
}
return
}
func parseControlMessage(b []byte) (*ControlMessage, error) {
if len(b) == 0 {
return nil, nil
}
cmsgs, err := syscall.ParseSocketControlMessage(b)
if err != nil {
return nil, os.NewSyscallError("parse socket control message", err)
}
cm := &ControlMessage{}
for _, m := range cmsgs {
if m.Header.Level != ianaProtocolIPv6 {
continue
}
switch m.Header.Type {
case sysSockopt2292HopLimit:
cm.HopLimit = int(*(*byte)(unsafe.Pointer(&m.Data[:1][0])))
case sysSockopt2292PacketInfo:
pi := (*sysPacketInfo)(unsafe.Pointer(&m.Data[0]))
cm.IfIndex = int(pi.IfIndex)
cm.Dst = pi.IP[:]
}
}
return cm, nil
}
func marshalControlMessage(cm *ControlMessage) (oob []byte) {
if cm == nil {
return
}
l, off := 0, 0
if cm.HopLimit > 0 {
l += syscall.CmsgSpace(4)
}
pion := false
if cm.Src.To4() == nil && cm.Src.To16() != nil || cm.IfIndex != 0 {
pion = true
l += syscall.CmsgSpace(sysSizeofPacketInfo)
}
if len(cm.NextHop) == net.IPv6len {
l += syscall.CmsgSpace(syscall.SizeofSockaddrInet6)
}
if l > 0 {
oob = make([]byte, l)
if cm.HopLimit > 0 {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockopt2292HopLimit
m.SetLen(syscall.CmsgLen(4))
data := oob[off+syscall.CmsgLen(0):]
*(*byte)(unsafe.Pointer(&data[:1][0])) = byte(cm.HopLimit)
off += syscall.CmsgSpace(4)
}
if pion {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockopt2292PacketInfo
m.SetLen(syscall.CmsgLen(sysSizeofPacketInfo))
pi := (*sysPacketInfo)(unsafe.Pointer(&oob[off+syscall.CmsgLen(0)]))
if ip := cm.Src.To16(); ip != nil && ip.To4() == nil {
copy(pi.IP[:], ip)
}
if cm.IfIndex != 0 {
pi.IfIndex = uint32(cm.IfIndex)
}
off += syscall.CmsgSpace(sysSizeofPacketInfo)
}
if len(cm.NextHop) == net.IPv6len {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockopt2292NextHop
m.SetLen(syscall.CmsgLen(syscall.SizeofSockaddrInet6))
sa := (*syscall.RawSockaddrInet6)(unsafe.Pointer(&oob[off+syscall.CmsgLen(0)]))
setSockaddr(sa, cm.NextHop, cm.IfIndex)
off += syscall.CmsgSpace(syscall.SizeofSockaddrInet6)
}
}
return
}

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@ -1,27 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv6
func setControlMessage(fd int, opt *rawOpt, cf ControlFlags, on bool) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
func newControlMessage(opt *rawOpt) (oob []byte) {
// TODO(mikio): Implement this
return nil
}
func parseControlMessage(b []byte) (*ControlMessage, error) {
// TODO(mikio): Implement this
return nil, errOpNoSupport
}
func marshalControlMessage(cm *ControlMessage) (oob []byte) {
// TODO(mikio): Implement this
return nil
}

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@ -1,210 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build dragonfly freebsd linux netbsd openbsd
package ipv6
import (
"net"
"os"
"syscall"
"unsafe"
)
const pktinfo = FlagDst | FlagInterface
func setControlMessage(fd int, opt *rawOpt, cf ControlFlags, on bool) error {
opt.Lock()
defer opt.Unlock()
if cf&FlagTrafficClass != 0 {
if err := setIPv6ReceiveTrafficClass(fd, on); err != nil {
return err
}
if on {
opt.set(FlagTrafficClass)
} else {
opt.clear(FlagTrafficClass)
}
}
if cf&FlagHopLimit != 0 {
if err := setIPv6ReceiveHopLimit(fd, on); err != nil {
return err
}
if on {
opt.set(FlagHopLimit)
} else {
opt.clear(FlagHopLimit)
}
}
if cf&pktinfo != 0 {
if err := setIPv6ReceivePacketInfo(fd, on); err != nil {
return err
}
if on {
opt.set(cf & pktinfo)
} else {
opt.clear(cf & pktinfo)
}
}
if cf&FlagPathMTU != 0 {
if err := setIPv6ReceivePathMTU(fd, on); err != nil {
return err
}
if on {
opt.set(FlagPathMTU)
} else {
opt.clear(FlagPathMTU)
}
}
return nil
}
func newControlMessage(opt *rawOpt) (oob []byte) {
opt.Lock()
defer opt.Unlock()
l, off := 0, 0
if opt.isset(FlagTrafficClass) {
l += syscall.CmsgSpace(4)
}
if opt.isset(FlagHopLimit) {
l += syscall.CmsgSpace(4)
}
if opt.isset(pktinfo) {
l += syscall.CmsgSpace(sysSizeofPacketInfo)
}
if opt.isset(FlagPathMTU) {
l += syscall.CmsgSpace(sysSizeofMTUInfo)
}
if l > 0 {
oob = make([]byte, l)
if opt.isset(FlagTrafficClass) {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptReceiveTrafficClass
m.SetLen(syscall.CmsgLen(4))
off += syscall.CmsgSpace(4)
}
if opt.isset(FlagHopLimit) {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptReceiveHopLimit
m.SetLen(syscall.CmsgLen(4))
off += syscall.CmsgSpace(4)
}
if opt.isset(pktinfo) {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptReceivePacketInfo
m.SetLen(syscall.CmsgLen(sysSizeofPacketInfo))
off += syscall.CmsgSpace(sysSizeofPacketInfo)
}
if opt.isset(FlagPathMTU) {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptReceivePathMTU
m.SetLen(syscall.CmsgLen(sysSizeofMTUInfo))
off += syscall.CmsgSpace(sysSizeofMTUInfo)
}
}
return
}
func parseControlMessage(b []byte) (*ControlMessage, error) {
if len(b) == 0 {
return nil, nil
}
cmsgs, err := syscall.ParseSocketControlMessage(b)
if err != nil {
return nil, os.NewSyscallError("parse socket control message", err)
}
cm := &ControlMessage{}
for _, m := range cmsgs {
if m.Header.Level != ianaProtocolIPv6 {
continue
}
switch m.Header.Type {
case sysSockoptTrafficClass:
cm.TrafficClass = int(*(*byte)(unsafe.Pointer(&m.Data[:1][0])))
case sysSockoptHopLimit:
cm.HopLimit = int(*(*byte)(unsafe.Pointer(&m.Data[:1][0])))
case sysSockoptPacketInfo:
pi := (*sysPacketInfo)(unsafe.Pointer(&m.Data[0]))
cm.Dst = pi.IP[:]
cm.IfIndex = int(pi.IfIndex)
case sysSockoptPathMTU:
mi := (*sysMTUInfo)(unsafe.Pointer(&m.Data[0]))
cm.Dst = mi.Addr.Addr[:]
cm.IfIndex = int(mi.Addr.Scope_id)
cm.MTU = int(mi.MTU)
}
}
return cm, nil
}
func marshalControlMessage(cm *ControlMessage) (oob []byte) {
if cm == nil {
return
}
l, off := 0, 0
if cm.TrafficClass > 0 {
l += syscall.CmsgSpace(4)
}
if cm.HopLimit > 0 {
l += syscall.CmsgSpace(4)
}
pion := false
if cm.Src.To4() == nil && cm.Src.To16() != nil || cm.IfIndex != 0 {
pion = true
l += syscall.CmsgSpace(sysSizeofPacketInfo)
}
if len(cm.NextHop) == net.IPv6len {
l += syscall.CmsgSpace(syscall.SizeofSockaddrInet6)
}
if l > 0 {
oob = make([]byte, l)
if cm.TrafficClass > 0 {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptTrafficClass
m.SetLen(syscall.CmsgLen(4))
data := oob[off+syscall.CmsgLen(0):]
*(*byte)(unsafe.Pointer(&data[:1][0])) = byte(cm.TrafficClass)
off += syscall.CmsgSpace(4)
}
if cm.HopLimit > 0 {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptHopLimit
m.SetLen(syscall.CmsgLen(4))
data := oob[off+syscall.CmsgLen(0):]
*(*byte)(unsafe.Pointer(&data[:1][0])) = byte(cm.HopLimit)
off += syscall.CmsgSpace(4)
}
if pion {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptPacketInfo
m.SetLen(syscall.CmsgLen(sysSizeofPacketInfo))
pi := (*sysPacketInfo)(unsafe.Pointer(&oob[off+syscall.CmsgLen(0)]))
if ip := cm.Src.To16(); ip != nil && ip.To4() == nil {
copy(pi.IP[:], ip)
}
if cm.IfIndex != 0 {
pi.IfIndex = uint32(cm.IfIndex)
}
off += syscall.CmsgSpace(sysSizeofPacketInfo)
}
if len(cm.NextHop) == net.IPv6len {
m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off]))
m.Level = ianaProtocolIPv6
m.Type = sysSockoptNextHop
m.SetLen(syscall.CmsgLen(syscall.SizeofSockaddrInet6))
sa := (*syscall.RawSockaddrInet6)(unsafe.Pointer(&oob[off+syscall.CmsgLen(0)]))
setSockaddr(sa, cm.NextHop, cm.IfIndex)
off += syscall.CmsgSpace(syscall.SizeofSockaddrInet6)
}
}
return
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import "syscall"
func setControlMessage(fd syscall.Handle, opt *rawOpt, cf ControlFlags, on bool) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}
func newControlMessage(opt *rawOpt) (oob []byte) {
// TODO(mikio): Implement this
return nil
}
func parseControlMessage(b []byte) (*ControlMessage, error) {
// TODO(mikio): Implement this
return nil, syscall.EWINDOWS
}
func marshalControlMessage(cm *ControlMessage) (oob []byte) {
// TODO(mikio): Implement this
return nil
}

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@ -1,178 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd windows
package ipv6
import (
"net"
"syscall"
)
// MulticastHopLimit returns the hop limit field value for outgoing
// multicast packets.
func (c *dgramOpt) MulticastHopLimit() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return ipv6MulticastHopLimit(fd)
}
// SetMulticastHopLimit sets the hop limit field value for future
// outgoing multicast packets.
func (c *dgramOpt) SetMulticastHopLimit(hoplim int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setIPv6MulticastHopLimit(fd, hoplim)
}
// MulticastInterface returns the default interface for multicast
// packet transmissions.
func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
if !c.ok() {
return nil, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return nil, err
}
return ipv6MulticastInterface(fd)
}
// SetMulticastInterface sets the default interface for future
// multicast packet transmissions.
func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setIPv6MulticastInterface(fd, ifi)
}
// MulticastLoopback reports whether transmitted multicast packets
// should be copied and send back to the originator.
func (c *dgramOpt) MulticastLoopback() (bool, error) {
if !c.ok() {
return false, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return false, err
}
return ipv6MulticastLoopback(fd)
}
// SetMulticastLoopback sets whether transmitted multicast packets
// should be copied and send back to the originator.
func (c *dgramOpt) SetMulticastLoopback(on bool) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setIPv6MulticastLoopback(fd, on)
}
// JoinGroup joins the group address group on the interface ifi.
// It uses the system assigned multicast interface when ifi is nil,
// although this is not recommended because the assignment depends on
// platforms and sometimes it might require routing configuration.
func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
grp := netAddrToIP16(group)
if grp == nil {
return errMissingAddress
}
return joinIPv6Group(fd, ifi, grp)
}
// LeaveGroup leaves the group address group on the interface ifi.
func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
grp := netAddrToIP16(group)
if grp == nil {
return errMissingAddress
}
return leaveIPv6Group(fd, ifi, grp)
}
// Checksum reports whether the kernel will compute, store or verify a
// checksum for both incoming and outgoing packets. If on is true, it
// returns an offset in bytes into the data of where the checksum
// field is located.
func (c *dgramOpt) Checksum() (on bool, offset int, err error) {
if !c.ok() {
return false, 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return false, 0, err
}
return ipv6Checksum(fd)
}
// SetChecksum enables the kernel checksum processing. If on is ture,
// the offset should be an offset in bytes into the data of where the
// checksum field is located.
func (c *dgramOpt) SetChecksum(on bool, offset int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setIPv6Checksum(fd, on, offset)
}
// ICMPFilter returns an ICMP filter.
func (c *dgramOpt) ICMPFilter() (*ICMPFilter, error) {
if !c.ok() {
return nil, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return nil, err
}
return ipv6ICMPFilter(fd)
}
// SetICMPFilter deploys the ICMP filter.
func (c *dgramOpt) SetICMPFilter(f *ICMPFilter) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setIPv6ICMPFilter(fd, f)
}

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@ -1,95 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv6
import "net"
// MulticastHopLimit returns the hop limit field value for outgoing
// multicast packets.
func (c *dgramOpt) MulticastHopLimit() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
// SetMulticastHopLimit sets the hop limit field value for future
// outgoing multicast packets.
func (c *dgramOpt) SetMulticastHopLimit(hoplim int) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
// MulticastInterface returns the default interface for multicast
// packet transmissions.
func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
// TODO(mikio): Implement this
return nil, errOpNoSupport
}
// SetMulticastInterface sets the default interface for future
// multicast packet transmissions.
func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
// MulticastLoopback reports whether transmitted multicast packets
// should be copied and send back to the originator.
func (c *dgramOpt) MulticastLoopback() (bool, error) {
// TODO(mikio): Implement this
return false, errOpNoSupport
}
// SetMulticastLoopback sets whether transmitted multicast packets
// should be copied and send back to the originator.
func (c *dgramOpt) SetMulticastLoopback(on bool) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
// JoinGroup joins the group address group on the interface ifi.
// It uses the system assigned multicast interface when ifi is nil,
// although this is not recommended because the assignment depends on
// platforms and sometimes it might require routing configuration.
func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
// LeaveGroup leaves the group address group on the interface ifi.
func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
// Checksum reports whether the kernel will compute, store or verify a
// checksum for both incoming and outgoing packets. If on is true, it
// returns an offset in bytes into the data of where the checksum
// field is located.
func (c *dgramOpt) Checksum() (on bool, offset int, err error) {
// TODO(mikio): Implement this
return false, 0, errOpNoSupport
}
// SetChecksum enables the kernel checksum processing. If on is ture,
// the offset should be an offset in bytes into the data of where the
// checksum field is located.
func (c *dgramOpt) SetChecksum(on bool, offset int) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
// ICMPFilter returns an ICMP filter.
func (c *dgramOpt) ICMPFilter() (*ICMPFilter, error) {
// TODO(mikio): Implement this
return nil, errOpNoSupport
}
// SetICMPFilter deploys the ICMP filter.
func (c *dgramOpt) SetICMPFilter(f *ICMPFilter) error {
// TODO(mikio): Implement this
return errOpNoSupport
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package ipv6 implements IP-level socket options for the Internet
// Protocol version 6.
//
// The package provides IP-level socket options that allow
// manipulation of IPv6 facilities. The IPv6 and socket options for
// IPv6 are defined in RFC 2460, RFC 3493 and RFC 3542.
//
//
// Unicasting
//
// The options for unicasting are available for net.TCPConn,
// net.UDPConn and net.IPConn which are created as network connections
// that use the IPv6 transport. When a single TCP connection carrying
// a data flow of multiple packets needs to indicate the flow is
// important, ipv6.Conn is used to set the traffic class field on the
// IPv6 header for each packet.
//
// ln, err := net.Listen("tcp6", "[::]:1024")
// if err != nil {
// // error handling
// }
// defer ln.Close()
// for {
// c, err := ln.Accept()
// if err != nil {
// // error handling
// }
// go func(c net.Conn) {
// defer c.Close()
//
// The outgoing packets will be labeled DiffServ assured forwarding
// class 1 low drop precedence, as known as AF11 packets.
//
// if err := ipv6.NewConn(c).SetTrafficClass(DiffServAF11); err != nil {
// // error handling
// }
// if _, err := c.Write(data); err != nil {
// // error handling
// }
// }(c)
// }
//
//
// Multicasting
//
// The options for multicasting are available for net.UDPConn and
// net.IPconn which are created as network connections that use the
// IPv6 transport. A few network facilities must be prepared before
// you begin multicasting, at a minimum joining network interfaces and
// multicast groups.
//
// en0, err := net.InterfaceByName("en0")
// if err != nil {
// // error handling
// }
// en1, err := net.InterfaceByIndex(911)
// if err != nil {
// // error handling
// }
// group := net.ParseIP("ff02::114")
//
// First, an application listens to an appropriate address with an
// appropriate service port.
//
// c, err := net.ListenPacket("udp6", "[::]:1024")
// if err != nil {
// // error handling
// }
// defer c.Close()
//
// Second, the application joins multicast groups, starts listening to
// the groups on the specified network interfaces. Note that the
// service port for transport layer protocol does not matter with this
// operation as joining groups affects only network and link layer
// protocols, such as IPv6 and Ethernet.
//
// p := ipv6.NewPacketConn(c)
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: group}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en1, &net.UDPAddr{IP: group}); err != nil {
// // error handling
// }
//
// The application might set per packet control message transmissions
// between the protocol stack within the kernel. When the application
// needs a destination address on an incoming packet,
// SetControlMessage of ipv6.PacketConn is used to enable control
// message transmissons.
//
// if err := p.SetControlMessage(ipv6.FlagDst, true); err != nil {
// // error handling
// }
//
// The application could identify whether the received packets are
// of interest by using the control message that contains the
// destination address of the received packet.
//
// b := make([]byte, 1500)
// for {
// n, rcm, src, err := p.ReadFrom(b)
// if err != nil {
// // error handling
// }
// if rcm.Dst.IsMulticast() {
// if rcm.Dst.Equal(group)
// // joined group, do something
// } else {
// // unknown group, discard
// continue
// }
// }
//
// The application can also send both unicast and multicast packets.
//
// p.SetTrafficClass(DiffServCS0)
// p.SetHopLimit(16)
// if _, err := p.WriteTo(data[:n], nil, src); err != nil {
// // error handling
// }
// dst := &net.UDPAddr{IP: group, Port: 1024}
// wcm := ipv6.ControlMessage{TrafficClass: DiffServCS7, HopLimit: 1}
// for _, ifi := range []*net.Interface{en0, en1} {
// wcm.IfIndex = ifi.Index
// if _, err := p.WriteTo(data[:n], &wcm, dst); err != nil {
// // error handling
// }
// }
// }
//
//
// More multicasting
//
// An application that uses PacketConn may join multiple multicast
// groups. For example, a UDP listener with port 1024 might join two
// different groups across over two different network interfaces by
// using:
//
// c, err := net.ListenPacket("udp6", "[::]:1024")
// if err != nil {
// // error handling
// }
// defer c.Close()
// p := ipv6.NewPacketConn(c)
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::1:114")}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::2:114")}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en1, &net.UDPAddr{IP: net.ParseIP("ff02::2:114")}); err != nil {
// // error handling
// }
//
// It is possible for multiple UDP listeners that listen on the same
// UDP port to join the same multicast group. The net package will
// provide a socket that listens to a wildcard address with reusable
// UDP port when an appropriate multicast address prefix is passed to
// the net.ListenPacket or net.ListenUDP.
//
// c1, err := net.ListenPacket("udp6", "[ff02::]:1024")
// if err != nil {
// // error handling
// }
// defer c1.Close()
// c2, err := net.ListenPacket("udp6", "[ff02::]:1024")
// if err != nil {
// // error handling
// }
// defer c2.Close()
// p1 := ipv6.NewPacketConn(c1)
// if err := p1.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::114")}); err != nil {
// // error handling
// }
// p2 := ipv6.NewPacketConn(c2)
// if err := p2.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::114")}); err != nil {
// // error handling
// }
//
// Also it is possible for the application to leave or rejoin a
// multicast group on the network interface.
//
// if err := p.LeaveGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::114")}); err != nil {
// // error handling
// }
// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff01::114")}); err != nil {
// // error handling
// }
package ipv6

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"net"
"syscall"
"time"
)
// A Conn represents a network endpoint that uses IPv6 transport.
// It allows to set basic IP-level socket options such as traffic
// class and hop limit.
type Conn struct {
genericOpt
}
type genericOpt struct {
net.Conn
}
func (c *genericOpt) ok() bool { return c != nil && c.Conn != nil }
// PathMTU returns a path MTU value for the destination associated
// with the endpoint.
func (c *Conn) PathMTU() (int, error) {
if !c.genericOpt.ok() {
return 0, syscall.EINVAL
}
fd, err := c.genericOpt.sysfd()
if err != nil {
return 0, err
}
return ipv6PathMTU(fd)
}
// NewConn returns a new Conn.
func NewConn(c net.Conn) *Conn {
return &Conn{
genericOpt: genericOpt{Conn: c},
}
}
// A PacketConn represents a packet network endpoint that uses IPv6
// transport. It is used to control several IP-level socket options
// including IPv6 header manipulation. It also provides datagram
// based network I/O methods specific to the IPv6 and higher layer
// protocols such as OSPF, GRE, and UDP.
type PacketConn struct {
genericOpt
dgramOpt
payloadHandler
}
type dgramOpt struct {
net.PacketConn
}
func (c *dgramOpt) ok() bool { return c != nil && c.PacketConn != nil }
// SetControlMessage allows to receive the per packet basis IP-level
// socket options.
func (c *PacketConn) SetControlMessage(cf ControlFlags, on bool) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
fd, err := c.payloadHandler.sysfd()
if err != nil {
return err
}
return setControlMessage(fd, &c.payloadHandler.rawOpt, cf, on)
}
// SetDeadline sets the read and write deadlines associated with the
// endpoint.
func (c *PacketConn) SetDeadline(t time.Time) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.SetDeadline(t)
}
// SetReadDeadline sets the read deadline associated with the
// endpoint.
func (c *PacketConn) SetReadDeadline(t time.Time) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.SetReadDeadline(t)
}
// SetWriteDeadline sets the write deadline associated with the
// endpoint.
func (c *PacketConn) SetWriteDeadline(t time.Time) error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.SetWriteDeadline(t)
}
// Close closes the endpoint.
func (c *PacketConn) Close() error {
if !c.payloadHandler.ok() {
return syscall.EINVAL
}
return c.payloadHandler.Close()
}
// NewPacketConn returns a new PacketConn using c as its underlying
// transport.
func NewPacketConn(c net.PacketConn) *PacketConn {
return &PacketConn{
genericOpt: genericOpt{Conn: c.(net.Conn)},
dgramOpt: dgramOpt{PacketConn: c},
payloadHandler: payloadHandler{PacketConn: c},
}
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd windows
package ipv6
import "syscall"
// TrafficClass returns the traffic class field value for outgoing
// packets.
func (c *genericOpt) TrafficClass() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return ipv6TrafficClass(fd)
}
// SetTrafficClass sets the traffic class field value for future
// outgoing packets.
func (c *genericOpt) SetTrafficClass(tclass int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setIPv6TrafficClass(fd, tclass)
}
// HopLimit returns the hop limit field value for outgoing packets.
func (c *genericOpt) HopLimit() (int, error) {
if !c.ok() {
return 0, syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return 0, err
}
return ipv6HopLimit(fd)
}
// SetHopLimit sets the hop limit field value for future outgoing
// packets.
func (c *genericOpt) SetHopLimit(hoplim int) error {
if !c.ok() {
return syscall.EINVAL
}
fd, err := c.sysfd()
if err != nil {
return err
}
return setIPv6HopLimit(fd, hoplim)
}

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@ -1,34 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv6
// TrafficClass returns the traffic class field value for outgoing
// packets.
func (c *genericOpt) TrafficClass() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
// SetTrafficClass sets the traffic class field value for future
// outgoing packets.
func (c *genericOpt) SetTrafficClass(tclass int) error {
// TODO(mikio): Implement this
return errOpNoSupport
}
// HopLimit returns the hop limit field value for outgoing packets.
func (c *genericOpt) HopLimit() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
// SetHopLimit sets the hop limit field value for future outgoing
// packets.
func (c *genericOpt) SetHopLimit(hoplim int) error {
// TODO(mikio): Implement this
return errOpNoSupport
}

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@ -1,33 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"errors"
"net"
)
var errOpNoSupport = errors.New("operation not supported")
func boolint(b bool) int {
if b {
return 1
}
return 0
}
func netAddrToIP16(a net.Addr) net.IP {
switch v := a.(type) {
case *net.UDPAddr:
if ip := v.IP.To16(); ip != nil && ip.To4() == nil {
return ip
}
case *net.IPAddr:
if ip := v.IP.To16(); ip != nil && ip.To4() == nil {
return ip
}
}
return nil
}

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@ -1,22 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv6
func (c *genericOpt) sysfd() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *dgramOpt) sysfd() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c *payloadHandler) sysfd() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}

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@ -1,46 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd
package ipv6
import (
"net"
"reflect"
)
func (c *genericOpt) sysfd() (int, error) {
switch p := c.Conn.(type) {
case *net.TCPConn, *net.UDPConn, *net.IPConn:
return sysfd(p)
}
return 0, errInvalidConnType
}
func (c *dgramOpt) sysfd() (int, error) {
switch p := c.PacketConn.(type) {
case *net.UDPConn, *net.IPConn:
return sysfd(p.(net.Conn))
}
return 0, errInvalidConnType
}
func (c *payloadHandler) sysfd() (int, error) {
return sysfd(c.PacketConn.(net.Conn))
}
func sysfd(c net.Conn) (int, error) {
cv := reflect.ValueOf(c)
switch ce := cv.Elem(); ce.Kind() {
case reflect.Struct:
nfd := ce.FieldByName("conn").FieldByName("fd")
switch fe := nfd.Elem(); fe.Kind() {
case reflect.Struct:
fd := fe.FieldByName("sysfd")
return int(fd.Int()), nil
}
}
return 0, errInvalidConnType
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"net"
"reflect"
"syscall"
)
func (c *genericOpt) sysfd() (syscall.Handle, error) {
switch p := c.Conn.(type) {
case *net.TCPConn, *net.UDPConn, *net.IPConn:
return sysfd(p)
}
return syscall.InvalidHandle, errInvalidConnType
}
func (c *dgramOpt) sysfd() (syscall.Handle, error) {
switch p := c.PacketConn.(type) {
case *net.UDPConn, *net.IPConn:
return sysfd(p.(net.Conn))
}
return syscall.InvalidHandle, errInvalidConnType
}
func (c *payloadHandler) sysfd() (syscall.Handle, error) {
return sysfd(c.PacketConn.(net.Conn))
}
func sysfd(c net.Conn) (syscall.Handle, error) {
cv := reflect.ValueOf(c)
switch ce := cv.Elem(); ce.Kind() {
case reflect.Struct:
netfd := ce.FieldByName("conn").FieldByName("fd")
switch fe := netfd.Elem(); fe.Kind() {
case reflect.Struct:
fd := fe.FieldByName("sysfd")
return syscall.Handle(fd.Uint()), nil
}
}
return syscall.InvalidHandle, errInvalidConnType
}

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@ -1,224 +0,0 @@
// go run gen.go
// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
package ipv6
// Internet Control Message Protocol version 6 (ICMPv6) Parameters, Updated: 2013-07-03
const (
ICMPTypeDestinationUnreachable ICMPType = 1 // Destination Unreachable
ICMPTypePacketTooBig ICMPType = 2 // Packet Too Big
ICMPTypeTimeExceeded ICMPType = 3 // Time Exceeded
ICMPTypeParameterProblem ICMPType = 4 // Parameter Problem
ICMPTypeEchoRequest ICMPType = 128 // Echo Request
ICMPTypeEchoReply ICMPType = 129 // Echo Reply
ICMPTypeMulticastListenerQuery ICMPType = 130 // Multicast Listener Query
ICMPTypeMulticastListenerReport ICMPType = 131 // Multicast Listener Report
ICMPTypeMulticastListenerDone ICMPType = 132 // Multicast Listener Done
ICMPTypeRouterSolicitation ICMPType = 133 // Router Solicitation
ICMPTypeRouterAdvertisement ICMPType = 134 // Router Advertisement
ICMPTypeNeighborSolicitation ICMPType = 135 // Neighbor Solicitation
ICMPTypeNeighborAdvertisement ICMPType = 136 // Neighbor Advertisement
ICMPTypeRedirect ICMPType = 137 // Redirect Message
ICMPTypeRouterRenumbering ICMPType = 138 // Router Renumbering
ICMPTypeNodeInformationQuery ICMPType = 139 // ICMP Node Information Query
ICMPTypeNodeInformationResponse ICMPType = 140 // ICMP Node Information Response
ICMPTypeInverseNeighborDiscoverySolicitation ICMPType = 141 // Inverse Neighbor Discovery Solicitation Message
ICMPTypeInverseNeighborDiscoveryAdvertisement ICMPType = 142 // Inverse Neighbor Discovery Advertisement Message
ICMPTypeVersion2MulticastListenerReport ICMPType = 143 // Version 2 Multicast Listener Report
ICMPTypeHomeAgentAddressDiscoveryRequest ICMPType = 144 // Home Agent Address Discovery Request Message
ICMPTypeHomeAgentAddressDiscoveryReply ICMPType = 145 // Home Agent Address Discovery Reply Message
ICMPTypeMobilePrefixSolicitation ICMPType = 146 // Mobile Prefix Solicitation
ICMPTypeMobilePrefixAdvertisement ICMPType = 147 // Mobile Prefix Advertisement
ICMPTypeCertificationPathSolicitation ICMPType = 148 // Certification Path Solicitation Message
ICMPTypeCertificationPathAdvertisement ICMPType = 149 // Certification Path Advertisement Message
ICMPTypeMulticastRouterAdvertisement ICMPType = 151 // Multicast Router Advertisement
ICMPTypeMulticastRouterSolicitation ICMPType = 152 // Multicast Router Solicitation
ICMPTypeMulticastRouterTermination ICMPType = 153 // Multicast Router Termination
ICMPTypeFMIPv6 ICMPType = 154 // FMIPv6 Messages
ICMPTypeRPLControl ICMPType = 155 // RPL Control Message
ICMPTypeILNPv6LocatorUpdate ICMPType = 156 // ILNPv6 Locator Update Message
ICMPTypeDuplicateAddressRequest ICMPType = 157 // Duplicate Address Request
ICMPTypeDuplicateAddressConfirmation ICMPType = 158 // Duplicate Address Confirmation
)
// Internet Control Message Protocol version 6 (ICMPv6) Parameters, Updated: 2013-07-03
var icmpTypes = map[ICMPType]string{
1: "destination unreachable",
2: "packet too big",
3: "time exceeded",
4: "parameter problem",
128: "echo request",
129: "echo reply",
130: "multicast listener query",
131: "multicast listener report",
132: "multicast listener done",
133: "router solicitation",
134: "router advertisement",
135: "neighbor solicitation",
136: "neighbor advertisement",
137: "redirect message",
138: "router renumbering",
139: "icmp node information query",
140: "icmp node information response",
141: "inverse neighbor discovery solicitation message",
142: "inverse neighbor discovery advertisement message",
143: "version 2 multicast listener report",
144: "home agent address discovery request message",
145: "home agent address discovery reply message",
146: "mobile prefix solicitation",
147: "mobile prefix advertisement",
148: "certification path solicitation message",
149: "certification path advertisement message",
151: "multicast router advertisement",
152: "multicast router solicitation",
153: "multicast router termination",
154: "fmipv6 messages",
155: "rpl control message",
156: "ilnpv6 locator update message",
157: "duplicate address request",
158: "duplicate address confirmation",
}
// Protocol Numbers, Updated: 2013-02-17
const (
ianaProtocolHOPOPT = 0 // IPv6 Hop-by-Hop Option
ianaProtocolICMP = 1 // Internet Control Message
ianaProtocolIGMP = 2 // Internet Group Management
ianaProtocolGGP = 3 // Gateway-to-Gateway
ianaProtocolIPv4 = 4 // IPv4 encapsulation
ianaProtocolST = 5 // Stream
ianaProtocolTCP = 6 // Transmission Control
ianaProtocolCBT = 7 // CBT
ianaProtocolEGP = 8 // Exterior Gateway Protocol
ianaProtocolIGP = 9 // any private interior gateway (used by Cisco for their IGRP)
ianaProtocolBBNRCCMON = 10 // BBN RCC Monitoring
ianaProtocolNVPII = 11 // Network Voice Protocol
ianaProtocolPUP = 12 // PUP
ianaProtocolARGUS = 13 // ARGUS
ianaProtocolEMCON = 14 // EMCON
ianaProtocolXNET = 15 // Cross Net Debugger
ianaProtocolCHAOS = 16 // Chaos
ianaProtocolUDP = 17 // User Datagram
ianaProtocolMUX = 18 // Multiplexing
ianaProtocolDCNMEAS = 19 // DCN Measurement Subsystems
ianaProtocolHMP = 20 // Host Monitoring
ianaProtocolPRM = 21 // Packet Radio Measurement
ianaProtocolXNSIDP = 22 // XEROX NS IDP
ianaProtocolTRUNK1 = 23 // Trunk-1
ianaProtocolTRUNK2 = 24 // Trunk-2
ianaProtocolLEAF1 = 25 // Leaf-1
ianaProtocolLEAF2 = 26 // Leaf-2
ianaProtocolRDP = 27 // Reliable Data Protocol
ianaProtocolIRTP = 28 // Internet Reliable Transaction
ianaProtocolISOTP4 = 29 // ISO Transport Protocol Class 4
ianaProtocolNETBLT = 30 // Bulk Data Transfer Protocol
ianaProtocolMFENSP = 31 // MFE Network Services Protocol
ianaProtocolMERITINP = 32 // MERIT Internodal Protocol
ianaProtocolDCCP = 33 // Datagram Congestion Control Protocol
ianaProtocol3PC = 34 // Third Party Connect Protocol
ianaProtocolIDPR = 35 // Inter-Domain Policy Routing Protocol
ianaProtocolXTP = 36 // XTP
ianaProtocolDDP = 37 // Datagram Delivery Protocol
ianaProtocolIDPRCMTP = 38 // IDPR Control Message Transport Proto
ianaProtocolTPPP = 39 // TP++ Transport Protocol
ianaProtocolIL = 40 // IL Transport Protocol
ianaProtocolIPv6 = 41 // IPv6 encapsulation
ianaProtocolSDRP = 42 // Source Demand Routing Protocol
ianaProtocolIPv6Route = 43 // Routing Header for IPv6
ianaProtocolIPv6Frag = 44 // Fragment Header for IPv6
ianaProtocolIDRP = 45 // Inter-Domain Routing Protocol
ianaProtocolRSVP = 46 // Reservation Protocol
ianaProtocolGRE = 47 // Generic Routing Encapsulation
ianaProtocolDSR = 48 // Dynamic Source Routing Protocol
ianaProtocolBNA = 49 // BNA
ianaProtocolESP = 50 // Encap Security Payload
ianaProtocolAH = 51 // Authentication Header
ianaProtocolINLSP = 52 // Integrated Net Layer Security TUBA
ianaProtocolSWIPE = 53 // IP with Encryption
ianaProtocolNARP = 54 // NBMA Address Resolution Protocol
ianaProtocolMOBILE = 55 // IP Mobility
ianaProtocolTLSP = 56 // Transport Layer Security Protocol using Kryptonet key management
ianaProtocolSKIP = 57 // SKIP
ianaProtocolIPv6ICMP = 58 // ICMP for IPv6
ianaProtocolIPv6NoNxt = 59 // No Next Header for IPv6
ianaProtocolIPv6Opts = 60 // Destination Options for IPv6
ianaProtocolCFTP = 62 // CFTP
ianaProtocolSATEXPAK = 64 // SATNET and Backroom EXPAK
ianaProtocolKRYPTOLAN = 65 // Kryptolan
ianaProtocolRVD = 66 // MIT Remote Virtual Disk Protocol
ianaProtocolIPPC = 67 // Internet Pluribus Packet Core
ianaProtocolSATMON = 69 // SATNET Monitoring
ianaProtocolVISA = 70 // VISA Protocol
ianaProtocolIPCV = 71 // Internet Packet Core Utility
ianaProtocolCPNX = 72 // Computer Protocol Network Executive
ianaProtocolCPHB = 73 // Computer Protocol Heart Beat
ianaProtocolWSN = 74 // Wang Span Network
ianaProtocolPVP = 75 // Packet Video Protocol
ianaProtocolBRSATMON = 76 // Backroom SATNET Monitoring
ianaProtocolSUNND = 77 // SUN ND PROTOCOL-Temporary
ianaProtocolWBMON = 78 // WIDEBAND Monitoring
ianaProtocolWBEXPAK = 79 // WIDEBAND EXPAK
ianaProtocolISOIP = 80 // ISO Internet Protocol
ianaProtocolVMTP = 81 // VMTP
ianaProtocolSECUREVMTP = 82 // SECURE-VMTP
ianaProtocolVINES = 83 // VINES
ianaProtocolTTP = 84 // TTP
ianaProtocolIPTM = 84 // Protocol Internet Protocol Traffic Manager
ianaProtocolNSFNETIGP = 85 // NSFNET-IGP
ianaProtocolDGP = 86 // Dissimilar Gateway Protocol
ianaProtocolTCF = 87 // TCF
ianaProtocolEIGRP = 88 // EIGRP
ianaProtocolOSPFIGP = 89 // OSPFIGP
ianaProtocolSpriteRPC = 90 // Sprite RPC Protocol
ianaProtocolLARP = 91 // Locus Address Resolution Protocol
ianaProtocolMTP = 92 // Multicast Transport Protocol
ianaProtocolAX25 = 93 // AX.25 Frames
ianaProtocolIPIP = 94 // IP-within-IP Encapsulation Protocol
ianaProtocolMICP = 95 // Mobile Internetworking Control Pro.
ianaProtocolSCCSP = 96 // Semaphore Communications Sec. Pro.
ianaProtocolETHERIP = 97 // Ethernet-within-IP Encapsulation
ianaProtocolENCAP = 98 // Encapsulation Header
ianaProtocolGMTP = 100 // GMTP
ianaProtocolIFMP = 101 // Ipsilon Flow Management Protocol
ianaProtocolPNNI = 102 // PNNI over IP
ianaProtocolPIM = 103 // Protocol Independent Multicast
ianaProtocolARIS = 104 // ARIS
ianaProtocolSCPS = 105 // SCPS
ianaProtocolQNX = 106 // QNX
ianaProtocolAN = 107 // Active Networks
ianaProtocolIPComp = 108 // IP Payload Compression Protocol
ianaProtocolSNP = 109 // Sitara Networks Protocol
ianaProtocolCompaqPeer = 110 // Compaq Peer Protocol
ianaProtocolIPXinIP = 111 // IPX in IP
ianaProtocolVRRP = 112 // Virtual Router Redundancy Protocol
ianaProtocolPGM = 113 // PGM Reliable Transport Protocol
ianaProtocolL2TP = 115 // Layer Two Tunneling Protocol
ianaProtocolDDX = 116 // D-II Data Exchange (DDX)
ianaProtocolIATP = 117 // Interactive Agent Transfer Protocol
ianaProtocolSTP = 118 // Schedule Transfer Protocol
ianaProtocolSRP = 119 // SpectraLink Radio Protocol
ianaProtocolUTI = 120 // UTI
ianaProtocolSMP = 121 // Simple Message Protocol
ianaProtocolSM = 122 // SM
ianaProtocolPTP = 123 // Performance Transparency Protocol
ianaProtocolISIS = 124 // ISIS over IPv4
ianaProtocolFIRE = 125 // FIRE
ianaProtocolCRTP = 126 // Combat Radio Transport Protocol
ianaProtocolCRUDP = 127 // Combat Radio User Datagram
ianaProtocolSSCOPMCE = 128 // SSCOPMCE
ianaProtocolIPLT = 129 // IPLT
ianaProtocolSPS = 130 // Secure Packet Shield
ianaProtocolPIPE = 131 // Private IP Encapsulation within IP
ianaProtocolSCTP = 132 // Stream Control Transmission Protocol
ianaProtocolFC = 133 // Fibre Channel
ianaProtocolRSVPE2EIGNORE = 134 // RSVP-E2E-IGNORE
ianaProtocolMobilityHeader = 135 // Mobility Header
ianaProtocolUDPLite = 136 // UDPLite
ianaProtocolMPLSinIP = 137 // MPLS-in-IP
ianaProtocolMANET = 138 // MANET Protocols
ianaProtocolHIP = 139 // Host Identity Protocol
ianaProtocolShim6 = 140 // Shim6 Protocol
ianaProtocolWESP = 141 // Wrapped Encapsulating Security Payload
ianaProtocolROHC = 142 // Robust Header Compression
ianaProtocolReserved = 255 // Reserved
)

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import "sync"
// An ICMPType represents a type of ICMP message.
type ICMPType int
func (typ ICMPType) String() string {
s, ok := icmpTypes[typ]
if !ok {
return "<nil>"
}
return s
}
// An ICMPFilter represents an ICMP message filter for incoming
// packets.
type ICMPFilter struct {
mu sync.RWMutex
sysICMPFilter
}
// Set sets the ICMP type and filter action to the filter.
func (f *ICMPFilter) Set(typ ICMPType, block bool) {
f.mu.Lock()
f.set(typ, block)
f.mu.Unlock()
}
// SetAll sets the filter action to the filter.
func (f *ICMPFilter) SetAll(block bool) {
f.mu.Lock()
f.setAll(block)
f.mu.Unlock()
}
// WillBlock reports whether the ICMP type will be blocked.
func (f *ICMPFilter) WillBlock(typ ICMPType) bool {
f.mu.RLock()
ok := f.willBlock(typ)
f.mu.RUnlock()
return ok
}

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@ -1,33 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd netbsd openbsd
package ipv6
type sysICMPFilter struct {
Filt [8]uint32
}
func (f *sysICMPFilter) set(typ ICMPType, block bool) {
if block {
f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
} else {
f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
}
}
func (f *sysICMPFilter) setAll(block bool) {
for i := range f.Filt {
if block {
f.Filt[i] = 0
} else {
f.Filt[i] = 1<<32 - 1
}
}
}
func (f *sysICMPFilter) willBlock(typ ICMPType) bool {
return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
}

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@ -1,31 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
type sysICMPFilter struct {
Data [8]uint32
}
func (f *sysICMPFilter) set(typ ICMPType, block bool) {
if block {
f.Data[typ>>5] |= 1 << (uint32(typ) & 31)
} else {
f.Data[typ>>5] &^= 1 << (uint32(typ) & 31)
}
}
func (f *sysICMPFilter) setAll(block bool) {
for i := range f.Data {
if block {
f.Data[i] = 1<<32 - 1
} else {
f.Data[i] = 0
}
}
}
func (f *sysICMPFilter) willBlock(typ ICMPType) bool {
return f.Data[typ>>5]&(1<<(uint32(typ)&31)) != 0
}

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@ -1,24 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv6
type sysICMPFilter struct {
// TODO(mikio): Implement this
}
func (f *sysICMPFilter) set(typ ICMPType, block bool) {
// TODO(mikio): Implement this
}
func (f *sysICMPFilter) setAll(block bool) {
// TODO(mikio): Implement this
}
func (f *sysICMPFilter) willBlock(typ ICMPType) bool {
// TODO(mikio): Implement this
return false
}

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@ -1,22 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
type sysICMPFilter struct {
// TODO(mikio): Implement this
}
func (f *sysICMPFilter) set(typ ICMPType, block bool) {
// TODO(mikio): Implement this
}
func (f *sysICMPFilter) setAll(block bool) {
// TODO(mikio): Implement this
}
func (f *sysICMPFilter) willBlock(typ ICMPType) bool {
// TODO(mikio): Implement this
return false
}

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@ -1,15 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import "net"
// A payloadHandler represents the IPv6 datagram payload handler.
type payloadHandler struct {
net.PacketConn
rawOpt
}
func (c *payloadHandler) ok() bool { return c != nil && c.PacketConn != nil }

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !nacl,!plan9,!windows
package ipv6
import (
"net"
"syscall"
)
// ReadFrom reads a payload of the received IPv6 datagram, from the
// endpoint c, copying the payload into b. It returns the number of
// bytes copied into b, the control message cm and the source address
// src of the received datagram.
func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
if !c.ok() {
return 0, nil, nil, syscall.EINVAL
}
oob := newControlMessage(&c.rawOpt)
var oobn int
switch c := c.PacketConn.(type) {
case *net.UDPConn:
if n, oobn, _, src, err = c.ReadMsgUDP(b, oob); err != nil {
return 0, nil, nil, err
}
case *net.IPConn:
if n, oobn, _, src, err = c.ReadMsgIP(b, oob); err != nil {
return 0, nil, nil, err
}
default:
return 0, nil, nil, errInvalidConnType
}
if cm, err = parseControlMessage(oob[:oobn]); err != nil {
return 0, nil, nil, err
}
if cm != nil {
cm.Src = netAddrToIP16(src)
}
return
}
// WriteTo writes a payload of the IPv6 datagram, to the destination
// address dst through the endpoint c, copying the payload from b. It
// returns the number of bytes written. The control message cm allows
// the IPv6 header fields and the datagram path to be specified. The
// cm may be nil if control of the outgoing datagram is not required.
func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
if !c.ok() {
return 0, syscall.EINVAL
}
oob := marshalControlMessage(cm)
if dst == nil {
return 0, errMissingAddress
}
switch c := c.PacketConn.(type) {
case *net.UDPConn:
n, _, err = c.WriteMsgUDP(b, oob, dst.(*net.UDPAddr))
case *net.IPConn:
n, _, err = c.WriteMsgIP(b, oob, dst.(*net.IPAddr))
default:
return 0, errInvalidConnType
}
if err != nil {
return 0, err
}
return
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 windows
package ipv6
import (
"net"
"syscall"
)
// ReadFrom reads a payload of the received IPv6 datagram, from the
// endpoint c, copying the payload into b. It returns the number of
// bytes copied into b, the control message cm and the source address
// src of the received datagram.
func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
if !c.ok() {
return 0, nil, nil, syscall.EINVAL
}
if n, src, err = c.PacketConn.ReadFrom(b); err != nil {
return 0, nil, nil, err
}
return
}
// WriteTo writes a payload of the IPv6 datagram, to the destination
// address dst through the endpoint c, copying the payload from b. It
// returns the number of bytes written. The control message cm allows
// the IPv6 header fields and the datagram path to be specified. The
// cm may be nil if control of the outgoing datagram is not required.
func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
if !c.ok() {
return 0, syscall.EINVAL
}
if dst == nil {
return 0, errMissingAddress
}
return c.PacketConn.WriteTo(b, dst)
}

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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
// Sticky socket options
const (
ssoTrafficClass = iota // header field for unicast packet, RFC 3542
ssoHopLimit // header field for unicast packet, RFC 3493
ssoMulticastInterface // outbound interface for multicast packet, RFC 3493
ssoMulticastHopLimit // header field for multicast packet, RFC 3493
ssoMulticastLoopback // loopback for multicast packet, RFC 3493
ssoReceiveTrafficClass // header field on received packet, RFC 3542
ssoReceiveHopLimit // header field on received packet, RFC 2292 or 3542
ssoReceivePacketInfo // incbound or outbound packet path, RFC 2292 or 3542
ssoReceivePathMTU // path mtu, RFC 3542
ssoPathMTU // path mtu, RFC 3542
ssoChecksum // packet checksum, RFC 2292 or 3542
ssoICMPFilter // icmp filter, RFC 2292 or 3542
ssoJoinGroup // any-source multicast, RFC 3493
ssoLeaveGroup // any-source multicast, RFC 3493
ssoMax
)
// Sticky socket option value types
const (
ssoTypeInt = iota + 1
ssoTypeInterface
ssoTypeICMPFilter
ssoTypeMTUInfo
ssoTypeIPMreq
)
// A sockOpt represents a binding for sticky socket option.
type sockOpt struct {
level int // option level
name int // option name, must be equal or greater than 1
typ int // option value type, must be equal or greater than 1
}

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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin
package ipv6
import (
"os"
"syscall"
"unsafe"
)
func ipv6ReceiveTrafficClass(fd int) (bool, error) {
return false, errOpNoSupport
}
func setIPv6ReceiveTrafficClass(fd int, v bool) error {
return errOpNoSupport
}
func ipv6ReceiveHopLimit(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockopt2292HopLimit)
if err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6ReceiveHopLimit(fd int, v bool) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockopt2292HopLimit, boolint(v)))
}
func ipv6ReceivePacketInfo(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockopt2292PacketInfo)
if err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6ReceivePacketInfo(fd int, v bool) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockopt2292PacketInfo, boolint(v)))
}
func ipv6PathMTU(fd int) (int, error) {
return 0, errOpNoSupport
}
func ipv6ReceivePathMTU(fd int) (bool, error) {
return false, errOpNoSupport
}
func setIPv6ReceivePathMTU(fd int, v bool) error {
return errOpNoSupport
}
func ipv6ICMPFilter(fd int) (*ICMPFilter, error) {
var v ICMPFilter
l := sysSockoptLen(sysSizeofICMPFilter)
if err := getsockopt(fd, ianaProtocolIPv6ICMP, sysSockoptICMPFilter, unsafe.Pointer(&v.sysICMPFilter), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
return &v, nil
}
func setIPv6ICMPFilter(fd int, f *ICMPFilter) error {
return os.NewSyscallError("setsockopt", setsockopt(fd, ianaProtocolIPv6ICMP, sysSockoptICMPFilter, unsafe.Pointer(&f.sysICMPFilter), sysSizeofICMPFilter))
}

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@ -1,19 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd netbsd openbsd
package ipv6
import (
"os"
"syscall"
)
func setIPv6Checksum(fd int, on bool, offset int) error {
if !on {
offset = -1
}
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptChecksum, offset))
}

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@ -1,17 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"os"
"syscall"
)
func setIPv6Checksum(fd int, on bool, offset int) error {
if !on {
offset = -1
}
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolReserved, sysSockoptChecksum, offset))
}

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@ -1,115 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd
package ipv6
import (
"net"
"os"
"syscall"
"unsafe"
)
func ipv6TrafficClass(fd int) (int, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptTrafficClass)
if err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return v, nil
}
func setIPv6TrafficClass(fd, v int) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptTrafficClass, v))
}
func ipv6HopLimit(fd int) (int, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptUnicastHopLimit)
if err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return v, nil
}
func setIPv6HopLimit(fd, v int) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptUnicastHopLimit, v))
}
func ipv6Checksum(fd int) (bool, int, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptChecksum)
if err != nil {
return false, 0, os.NewSyscallError("getsockopt", err)
}
on := true
if v == -1 {
on = false
}
return on, v, nil
}
func ipv6MulticastHopLimit(fd int) (int, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptMulticastHopLimit)
if err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return v, nil
}
func setIPv6MulticastHopLimit(fd, v int) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptMulticastHopLimit, v))
}
func ipv6MulticastInterface(fd int) (*net.Interface, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptMulticastInterface)
if err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
if v == 0 {
return nil, nil
}
ifi, err := net.InterfaceByIndex(v)
if err != nil {
return nil, err
}
return ifi, nil
}
func setIPv6MulticastInterface(fd int, ifi *net.Interface) error {
var v int
if ifi != nil {
v = ifi.Index
}
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptMulticastInterface, v))
}
func ipv6MulticastLoopback(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptMulticastLoopback)
if err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6MulticastLoopback(fd int, v bool) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptMulticastLoopback, boolint(v)))
}
func joinIPv6Group(fd int, ifi *net.Interface, grp net.IP) error {
mreq := sysMulticastReq{}
copy(mreq.IP[:], grp)
if ifi != nil {
mreq.IfIndex = uint32(ifi.Index)
}
return os.NewSyscallError("setsockopt", setsockopt(fd, ianaProtocolIPv6, sysSockoptJoinGroup, unsafe.Pointer(&mreq), sysSizeofMulticastReq))
}
func leaveIPv6Group(fd int, ifi *net.Interface, grp net.IP) error {
mreq := sysMulticastReq{}
copy(mreq.IP[:], grp)
if ifi != nil {
mreq.IfIndex = uint32(ifi.Index)
}
return os.NewSyscallError("setsockopt", setsockopt(fd, ianaProtocolIPv6, sysSockoptLeaveGroup, unsafe.Pointer(&mreq), sysSizeofMulticastReq))
}

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@ -1,116 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"net"
"os"
"syscall"
"unsafe"
)
func ipv6TrafficClass(fd syscall.Handle) (int, error) {
// TODO(mikio): Implement this
return 0, syscall.EWINDOWS
}
func setIPv6TrafficClass(fd syscall.Handle, v int) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}
func ipv6HopLimit(fd syscall.Handle) (int, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIPv6, sysSockoptUnicastHopLimit, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(v), nil
}
func setIPv6HopLimit(fd syscall.Handle, v int) error {
vv := int32(v)
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIPv6, sysSockoptUnicastHopLimit, (*byte)(unsafe.Pointer(&vv)), 4))
}
func ipv6Checksum(fd syscall.Handle) (bool, int, error) {
// TODO(mikio): Implement this
return false, 0, syscall.EWINDOWS
}
func ipv6MulticastHopLimit(fd syscall.Handle) (int, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIPv6, sysSockoptMulticastHopLimit, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(v), nil
}
func setIPv6MulticastHopLimit(fd syscall.Handle, v int) error {
vv := int32(v)
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIPv6, sysSockoptMulticastHopLimit, (*byte)(unsafe.Pointer(&vv)), 4))
}
func ipv6MulticastInterface(fd syscall.Handle) (*net.Interface, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIPv6, sysSockoptMulticastInterface, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
if v == 0 {
return nil, nil
}
ifi, err := net.InterfaceByIndex(int(v))
if err != nil {
return nil, err
}
return ifi, nil
}
func setIPv6MulticastInterface(fd syscall.Handle, ifi *net.Interface) error {
var v int32
if ifi != nil {
v = int32(ifi.Index)
}
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIPv6, sysSockoptMulticastInterface, (*byte)(unsafe.Pointer(&v)), 4))
}
func ipv6MulticastLoopback(fd syscall.Handle) (bool, error) {
var v int32
l := int32(4)
if err := syscall.Getsockopt(fd, ianaProtocolIPv6, sysSockoptMulticastLoopback, (*byte)(unsafe.Pointer(&v)), &l); err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6MulticastLoopback(fd syscall.Handle, v bool) error {
vv := int32(boolint(v))
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIPv6, sysSockoptMulticastLoopback, (*byte)(unsafe.Pointer(&vv)), 4))
}
func joinIPv6Group(fd syscall.Handle, ifi *net.Interface, grp net.IP) error {
mreq := sysMulticastReq{}
copy(mreq.IP[:], grp)
if ifi != nil {
mreq.IfIndex = uint32(ifi.Index)
}
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIPv6, sysSockoptJoinGroup, (*byte)(unsafe.Pointer(&mreq)), int32(sysSizeofMulticastReq)))
}
func leaveIPv6Group(fd syscall.Handle, ifi *net.Interface, grp net.IP) error {
mreq := sysMulticastReq{}
copy(mreq.IP[:], grp)
if ifi != nil {
mreq.IfIndex = uint32(ifi.Index)
}
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, ianaProtocolIPv6, sysSockoptLeaveGroup, (*byte)(unsafe.Pointer(&mreq)), int32(sysSizeofMulticastReq)))
}
func setIPv6Checksum(fd syscall.Handle, on bool, offset int) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}

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@ -1,12 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build nacl plan9 solaris
package ipv6
func ipv6PathMTU(fd int) (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}

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@ -1,83 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build dragonfly freebsd linux netbsd openbsd
package ipv6
import (
"os"
"syscall"
"unsafe"
)
func ipv6ReceiveTrafficClass(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceiveTrafficClass)
if err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6ReceiveTrafficClass(fd int, v bool) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceiveTrafficClass, boolint(v)))
}
func ipv6ReceiveHopLimit(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceiveHopLimit)
if err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6ReceiveHopLimit(fd int, v bool) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceiveHopLimit, boolint(v)))
}
func ipv6ReceivePacketInfo(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceivePacketInfo)
if err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6ReceivePacketInfo(fd int, v bool) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceivePacketInfo, boolint(v)))
}
func ipv6PathMTU(fd int) (int, error) {
var v sysMTUInfo
l := sysSockoptLen(sysSizeofMTUInfo)
if err := getsockopt(fd, ianaProtocolIPv6, sysSockoptPathMTU, unsafe.Pointer(&v), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(v.MTU), nil
}
func ipv6ReceivePathMTU(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceivePathMTU)
if err != nil {
return false, os.NewSyscallError("getsockopt", err)
}
return v == 1, nil
}
func setIPv6ReceivePathMTU(fd int, v bool) error {
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIPv6, sysSockoptReceivePathMTU, boolint(v)))
}
func ipv6ICMPFilter(fd int) (*ICMPFilter, error) {
var v ICMPFilter
l := sysSockoptLen(sysSizeofICMPFilter)
if err := getsockopt(fd, ianaProtocolIPv6ICMP, sysSockoptICMPFilter, unsafe.Pointer(&v.sysICMPFilter), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
return &v, nil
}
func setIPv6ICMPFilter(fd int, f *ICMPFilter) error {
return os.NewSyscallError("setsockopt", setsockopt(fd, ianaProtocolIPv6ICMP, sysSockoptICMPFilter, unsafe.Pointer(&f.sysICMPFilter), sysSizeofICMPFilter))
}

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@ -1,62 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import "syscall"
func ipv6ReceiveTrafficClass(fd syscall.Handle) (bool, error) {
// TODO(mikio): Implement this
return false, syscall.EWINDOWS
}
func setIPv6ReceiveTrafficClass(fd syscall.Handle, v bool) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}
func ipv6ReceiveHopLimit(fd syscall.Handle) (bool, error) {
// TODO(mikio): Implement this
return false, syscall.EWINDOWS
}
func setIPv6ReceiveHopLimit(fd syscall.Handle, v bool) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}
func ipv6ReceivePacketInfo(fd syscall.Handle) (bool, error) {
// TODO(mikio): Implement this
return false, syscall.EWINDOWS
}
func setIPv6ReceivePacketInfo(fd syscall.Handle, v bool) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}
func ipv6PathMTU(fd syscall.Handle) (int, error) {
// TODO(mikio): Implement this
return 0, syscall.EWINDOWS
}
func ipv6ReceivePathMTU(fd syscall.Handle) (bool, error) {
// TODO(mikio): Implement this
return false, syscall.EWINDOWS
}
func setIPv6ReceivePathMTU(fd syscall.Handle, v bool) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}
func ipv6ICMPFilter(fd syscall.Handle) (*ICMPFilter, error) {
// TODO(mikio): Implement this
return nil, syscall.EWINDOWS
}
func setIPv6ICMPFilter(fd syscall.Handle, f *ICMPFilter) error {
// TODO(mikio): Implement this
return syscall.EWINDOWS
}

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@ -1,23 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
type sysSockoptLen uint32
const (
sysSizeofPacketInfo = 0x14
sysSizeofMulticastReq = 0x14
sysSizeofICMPFilter = 0x20
)
type sysPacketInfo struct {
IP [16]byte
IfIndex uint32
}
type sysMulticastReq struct {
IP [16]byte
IfIndex uint32
}

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@ -1,37 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build dragonfly freebsd netbsd openbsd
package ipv6
import (
"net"
"syscall"
)
// RFC 3542 options
const (
// See /usr/include/netinet6/in6.h.
sysSockoptReceiveTrafficClass = syscall.IPV6_RECVTCLASS
sysSockoptTrafficClass = syscall.IPV6_TCLASS
sysSockoptReceiveHopLimit = syscall.IPV6_RECVHOPLIMIT
sysSockoptHopLimit = syscall.IPV6_HOPLIMIT
sysSockoptReceivePacketInfo = syscall.IPV6_RECVPKTINFO
sysSockoptPacketInfo = syscall.IPV6_PKTINFO
sysSockoptReceivePathMTU = syscall.IPV6_RECVPATHMTU
sysSockoptPathMTU = syscall.IPV6_PATHMTU
sysSockoptNextHop = syscall.IPV6_NEXTHOP
sysSockoptChecksum = syscall.IPV6_CHECKSUM
// See /usr/include/netinet6/in6.h.
sysSockoptICMPFilter = 0x12 // syscall.ICMP6_FILTER
)
func setSockaddr(sa *syscall.RawSockaddrInet6, ip net.IP, ifindex int) {
sa.Len = syscall.SizeofSockaddrInet6
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], ip)
sa.Scope_id = uint32(ifindex)
}

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@ -1,43 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"net"
"syscall"
)
// RFC 2292 options
const (
// See /usr/include/netinet6/in6.h.
sysSockopt2292HopLimit = syscall.IPV6_2292HOPLIMIT
sysSockopt2292PacketInfo = syscall.IPV6_2292PKTINFO
sysSockopt2292NextHop = syscall.IPV6_2292NEXTHOP
)
// RFC 3542 options
const (
// See /usr/include/netinet6/in6.h.
sysSockoptReceiveTrafficClass = 0x23 // IPV6_RECVTCLASS
sysSockoptTrafficClass = 0x24 // IPV6_TCLASS
sysSockoptReceiveHopLimit = 0x25 // IPV6_RECVHOPLIMIT
sysSockoptHopLimit = 0x2f // IPV6_HOPLIMIT
sysSockoptReceivePacketInfo = 0x3d // IPV6_RECVPKTINFO
sysSockoptPacketInfo = 0x2e // IPV6_PKTINFO
sysSockoptReceivePathMTU = 0x2b // IPV6_RECVPATHMTU
sysSockoptPathMTU = 0x2c // IPV6_PATHMTU
sysSockoptNextHop = 0x30 // IPV6_NEXTHOP
sysSockoptChecksum = 0x1a // IPV6_CHECKSUM
// See /usr/include/netinet6/in6.h.
sysSockoptICMPFilter = 0x12 // ICMP6_FILTER
)
func setSockaddr(sa *syscall.RawSockaddrInet6, ip net.IP, ifindex int) {
sa.Len = syscall.SizeofSockaddrInet6
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], ip)
sa.Scope_id = uint32(ifindex)
}

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@ -1,34 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"net"
"syscall"
)
// RFC 3542 options
const (
// See /usr/include/linux/ipv6.h,in6.h.
sysSockoptReceiveTrafficClass = syscall.IPV6_RECVTCLASS
sysSockoptTrafficClass = syscall.IPV6_TCLASS
sysSockoptReceiveHopLimit = syscall.IPV6_RECVHOPLIMIT
sysSockoptHopLimit = syscall.IPV6_HOPLIMIT
sysSockoptReceivePacketInfo = syscall.IPV6_RECVPKTINFO
sysSockoptPacketInfo = syscall.IPV6_PKTINFO
sysSockoptReceivePathMTU = 0x3c // IPV6_RECVPATHMTU
sysSockoptPathMTU = 0x3d // IPV6_PATHMTU
sysSockoptNextHop = syscall.IPV6_NEXTHOP
sysSockoptChecksum = syscall.IPV6_CHECKSUM
// See /usr/include/linux/icmpv6.h.
sysSockoptICMPFilter = 0x1 // syscall.ICMPV6_FILTER
)
func setSockaddr(sa *syscall.RawSockaddrInet6, ip net.IP, ifindex int) {
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], ip)
sa.Scope_id = uint32(ifindex)
}

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@ -1,26 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux netbsd openbsd
package ipv6
import "syscall"
// RFC 3493 options
const (
sysSockoptUnicastHopLimit = syscall.IPV6_UNICAST_HOPS
sysSockoptMulticastHopLimit = syscall.IPV6_MULTICAST_HOPS
sysSockoptMulticastInterface = syscall.IPV6_MULTICAST_IF
sysSockoptMulticastLoopback = syscall.IPV6_MULTICAST_LOOP
sysSockoptJoinGroup = syscall.IPV6_JOIN_GROUP
sysSockoptLeaveGroup = syscall.IPV6_LEAVE_GROUP
)
const sysSizeofMTUInfo = 0x20
type sysMTUInfo struct {
Addr syscall.RawSockaddrInet6
MTU uint32
}

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@ -1,33 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"net"
"syscall"
)
// RFC 3493 options
const (
// See ws2tcpip.h.
sysSockoptUnicastHopLimit = syscall.IPV6_UNICAST_HOPS
sysSockoptMulticastHopLimit = syscall.IPV6_MULTICAST_HOPS
sysSockoptMulticastInterface = syscall.IPV6_MULTICAST_IF
sysSockoptMulticastLoopback = syscall.IPV6_MULTICAST_LOOP
sysSockoptJoinGroup = syscall.IPV6_JOIN_GROUP
sysSockoptLeaveGroup = syscall.IPV6_LEAVE_GROUP
)
// RFC 3542 options
const (
// See ws2tcpip.h.
sysSockoptPacketInfo = 0x13 // IPV6_PKTINFO
)
func setSockaddr(sa *syscall.RawSockaddrInet6, ip net.IP, ifindex int) {
sa.Family = syscall.AF_INET6
copy(sa.Addr[:], ip)
sa.Scope_id = uint32(ifindex)
}

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@ -1,31 +0,0 @@
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ipv6
import (
"syscall"
"unsafe"
)
const (
sysGETSOCKOPT = 0xf
sysSETSOCKOPT = 0xe
)
func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (int, syscall.Errno)
func getsockopt(fd, level, name int, v unsafe.Pointer, l *sysSockoptLen) error {
if _, errno := socketcall(sysGETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0); errno != 0 {
return error(errno)
}
return nil
}
func setsockopt(fd, level, name int, v unsafe.Pointer, l sysSockoptLen) error {
if _, errno := socketcall(sysSETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
return error(errno)
}
return nil
}

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@ -1,26 +0,0 @@
// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly freebsd linux,amd64 linux,arm netbsd openbsd
package ipv6
import (
"syscall"
"unsafe"
)
func getsockopt(fd, level, name int, v unsafe.Pointer, l *sysSockoptLen) error {
if _, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0); errno != 0 {
return error(errno)
}
return nil
}
func setsockopt(fd, level, name int, v unsafe.Pointer, l sysSockoptLen) error {
if _, _, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT, uintptr(fd), uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
return error(errno)
}
return nil
}

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@ -1,8 +0,0 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.2
TEXT ·socketcall(SB),4,$0-36
JMP syscall·socketcall(SB)

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@ -1,101 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_darwin.go
package ipv6
const (
sysIPV6_UNICAST_HOPS = 0x4
sysIPV6_MULTICAST_IF = 0x9
sysIPV6_MULTICAST_HOPS = 0xa
sysIPV6_MULTICAST_LOOP = 0xb
sysIPV6_JOIN_GROUP = 0xc
sysIPV6_LEAVE_GROUP = 0xd
sysIPV6_PORTRANGE = 0xe
sysICMP6_FILTER = 0x12
sysIPV6_2292PKTINFO = 0x13
sysIPV6_2292HOPLIMIT = 0x14
sysIPV6_2292NEXTHOP = 0x15
sysIPV6_2292HOPOPTS = 0x16
sysIPV6_2292DSTOPTS = 0x17
sysIPV6_2292RTHDR = 0x18
sysIPV6_2292PKTOPTIONS = 0x19
sysIPV6_CHECKSUM = 0x1a
sysIPV6_V6ONLY = 0x1b
sysIPV6_IPSEC_POLICY = 0x1c
sysIPV6_RECVTCLASS = 0x23
sysIPV6_TCLASS = 0x24
sysIPV6_RTHDRDSTOPTS = 0x39
sysIPV6_RECVPKTINFO = 0x3d
sysIPV6_RECVHOPLIMIT = 0x25
sysIPV6_RECVRTHDR = 0x26
sysIPV6_RECVHOPOPTS = 0x27
sysIPV6_RECVDSTOPTS = 0x28
sysIPV6_USE_MIN_MTU = 0x2a
sysIPV6_RECVPATHMTU = 0x2b
sysIPV6_PATHMTU = 0x2c
sysIPV6_PKTINFO = 0x2e
sysIPV6_HOPLIMIT = 0x2f
sysIPV6_NEXTHOP = 0x30
sysIPV6_HOPOPTS = 0x31
sysIPV6_DSTOPTS = 0x32
sysIPV6_RTHDR = 0x33
sysIPV6_AUTOFLOWLABEL = 0x3b
sysIPV6_DONTFRAG = 0x3e
sysIPV6_PREFER_TEMPADDR = 0x3f
sysIPV6_BOUND_IF = 0x7d
sysIPV6_PORTRANGE_DEFAULT = 0x0
sysIPV6_PORTRANGE_HIGH = 0x1
sysIPV6_PORTRANGE_LOW = 0x2
sysSizeofSockaddrInet6 = 0x1c
sysSizeofInet6Pktinfo = 0x14
sysSizeofIPv6Mtuinfo = 0x20
sysSizeofIPv6Mreq = 0x14
sysSizeofICMPv6Filter = 0x20
)
type sysSockaddrInet6 struct {
Len uint8
Family uint8
Port uint16
Flowinfo uint32
Addr [16]byte /* in6_addr */
Scope_id uint32
}
type sysInet6Pktinfo struct {
Addr [16]byte /* in6_addr */
Ifindex uint32
}
type sysIPv6Mtuinfo struct {
Addr sysSockaddrInet6
Mtu uint32
}
type sysIPv6Mreq struct {
Multiaddr [16]byte /* in6_addr */
Interface uint32
}
type sysICMPv6Filter struct {
Filt [8]uint32
}

View File

@ -1,90 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_dragonfly.go
// +build dragonfly
package ipv6
const (
sysIPV6_UNICAST_HOPS = 0x4
sysIPV6_MULTICAST_IF = 0x9
sysIPV6_MULTICAST_HOPS = 0xa
sysIPV6_MULTICAST_LOOP = 0xb
sysIPV6_JOIN_GROUP = 0xc
sysIPV6_LEAVE_GROUP = 0xd
sysIPV6_PORTRANGE = 0xe
sysICMP6_FILTER = 0x12
sysIPV6_CHECKSUM = 0x1a
sysIPV6_V6ONLY = 0x1b
sysIPV6_IPSEC_POLICY = 0x1c
sysIPV6_RTHDRDSTOPTS = 0x23
sysIPV6_RECVPKTINFO = 0x24
sysIPV6_RECVHOPLIMIT = 0x25
sysIPV6_RECVRTHDR = 0x26
sysIPV6_RECVHOPOPTS = 0x27
sysIPV6_RECVDSTOPTS = 0x28
sysIPV6_USE_MIN_MTU = 0x2a
sysIPV6_RECVPATHMTU = 0x2b
sysIPV6_PATHMTU = 0x2c
sysIPV6_PKTINFO = 0x2e
sysIPV6_HOPLIMIT = 0x2f
sysIPV6_NEXTHOP = 0x30
sysIPV6_HOPOPTS = 0x31
sysIPV6_DSTOPTS = 0x32
sysIPV6_RTHDR = 0x33
sysIPV6_RECVTCLASS = 0x39
sysIPV6_AUTOFLOWLABEL = 0x3b
sysIPV6_TCLASS = 0x3d
sysIPV6_DONTFRAG = 0x3e
sysIPV6_PREFER_TEMPADDR = 0x3f
sysIPV6_PORTRANGE_DEFAULT = 0x0
sysIPV6_PORTRANGE_HIGH = 0x1
sysIPV6_PORTRANGE_LOW = 0x2
sysSizeofSockaddrInet6 = 0x1c
sysSizeofInet6Pktinfo = 0x14
sysSizeofIPv6Mtuinfo = 0x20
sysSizeofIPv6Mreq = 0x14
sysSizeofICMPv6Filter = 0x20
)
type sysSockaddrInet6 struct {
Len uint8
Family uint8
Port uint16
Flowinfo uint32
Addr [16]byte /* in6_addr */
Scope_id uint32
}
type sysInet6Pktinfo struct {
Addr [16]byte /* in6_addr */
Ifindex uint32
}
type sysIPv6Mtuinfo struct {
Addr sysSockaddrInet6
Mtu uint32
}
type sysIPv6Mreq struct {
Multiaddr [16]byte /* in6_addr */
Interface uint32
}
type sysICMPv6Filter struct {
Filt [8]uint32
}

View File

@ -1,91 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs defs_freebsd.go
package ipv6
const (
sysIPV6_UNICAST_HOPS = 0x4
sysIPV6_MULTICAST_IF = 0x9
sysIPV6_MULTICAST_HOPS = 0xa
sysIPV6_MULTICAST_LOOP = 0xb
sysIPV6_JOIN_GROUP = 0xc
sysIPV6_LEAVE_GROUP = 0xd
sysIPV6_PORTRANGE = 0xe
sysICMP6_FILTER = 0x12
sysIPV6_CHECKSUM = 0x1a
sysIPV6_V6ONLY = 0x1b
sysIPV6_IPSEC_POLICY = 0x1c
sysIPV6_RTHDRDSTOPTS = 0x23
sysIPV6_RECVPKTINFO = 0x24
sysIPV6_RECVHOPLIMIT = 0x25
sysIPV6_RECVRTHDR = 0x26
sysIPV6_RECVHOPOPTS = 0x27
sysIPV6_RECVDSTOPTS = 0x28
sysIPV6_USE_MIN_MTU = 0x2a
sysIPV6_RECVPATHMTU = 0x2b
sysIPV6_PATHMTU = 0x2c
sysIPV6_PKTINFO = 0x2e
sysIPV6_HOPLIMIT = 0x2f
sysIPV6_NEXTHOP = 0x30
sysIPV6_HOPOPTS = 0x31
sysIPV6_DSTOPTS = 0x32
sysIPV6_RTHDR = 0x33
sysIPV6_RECVTCLASS = 0x39
sysIPV6_AUTOFLOWLABEL = 0x3b
sysIPV6_TCLASS = 0x3d
sysIPV6_DONTFRAG = 0x3e
sysIPV6_PREFER_TEMPADDR = 0x3f
sysIPV6_BINDANY = 0x40
sysIPV6_PORTRANGE_DEFAULT = 0x0
sysIPV6_PORTRANGE_HIGH = 0x1
sysIPV6_PORTRANGE_LOW = 0x2
sysSizeofSockaddrInet6 = 0x1c
sysSizeofInet6Pktinfo = 0x14
sysSizeofIPv6Mtuinfo = 0x20
sysSizeofIPv6Mreq = 0x14
sysSizeofICMPv6Filter = 0x20
)
type sysSockaddrInet6 struct {
Len uint8
Family uint8
Port uint16
Flowinfo uint32
Addr [16]byte /* in6_addr */
Scope_id uint32
}
type sysInet6Pktinfo struct {
Addr [16]byte /* in6_addr */
Ifindex uint32
}
type sysIPv6Mtuinfo struct {
Addr sysSockaddrInet6
Mtu uint32
}
type sysIPv6Mreq struct {
Multiaddr [16]byte /* in6_addr */
Interface uint32
}
type sysICMPv6Filter struct {
Filt [8]uint32
}

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