ab9dd18bec
See https://github.com/hashicorp/consul/issues/3977 While trying to improve furthermore #3948 (This pull request is still valid since we are not using Compression to compute the result anyway). I saw a strange behaviour of dns library. Basically, msg.Len() and len(msg.Pack()) disagree on Message len. Thus, calculation of DNS response is false consul relies on msg.Len() instead of the result of Pack() This is linked to miekg/dns#453 and a fix has been provided with miekg/dns#454 Would it be possible to upgrade miekg/dns to a more recent function ? Consul might for instance upgrade to a post 1.0 release such as https://github.com/miekg/dns/releases/tag/v1.0.4
76 lines
1.9 KiB
Go
76 lines
1.9 KiB
Go
// 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"
|
|
|
|
"golang.org/x/net/internal/iana"
|
|
"golang.org/x/net/internal/socket"
|
|
)
|
|
|
|
const (
|
|
// See ws2tcpip.h.
|
|
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_PKTINFO = 0x13
|
|
|
|
sizeofSockaddrInet6 = 0x1c
|
|
|
|
sizeofIPv6Mreq = 0x14
|
|
sizeofIPv6Mtuinfo = 0x20
|
|
sizeofICMPv6Filter = 0
|
|
)
|
|
|
|
type sockaddrInet6 struct {
|
|
Family uint16
|
|
Port uint16
|
|
Flowinfo uint32
|
|
Addr [16]byte /* in6_addr */
|
|
Scope_id uint32
|
|
}
|
|
|
|
type ipv6Mreq struct {
|
|
Multiaddr [16]byte /* in6_addr */
|
|
Interface uint32
|
|
}
|
|
|
|
type ipv6Mtuinfo struct {
|
|
Addr sockaddrInet6
|
|
Mtu uint32
|
|
}
|
|
|
|
type icmpv6Filter struct {
|
|
// TODO(mikio): implement this
|
|
}
|
|
|
|
var (
|
|
ctlOpts = [ctlMax]ctlOpt{}
|
|
|
|
sockOpts = map[int]*sockOpt{
|
|
ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
|
|
ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
|
|
ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
|
|
ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
|
|
ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_JOIN_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
|
|
ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_LEAVE_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
|
|
}
|
|
)
|
|
|
|
func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
|
|
sa.Family = syscall.AF_INET6
|
|
copy(sa.Addr[:], ip)
|
|
sa.Scope_id = uint32(i)
|
|
}
|
|
|
|
func (mreq *ipv6Mreq) setIfindex(i int) {
|
|
mreq.Interface = uint32(i)
|
|
}
|