106 lines
4.2 KiB
Plaintext
106 lines
4.2 KiB
Plaintext
---
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layout: docs
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page_title: Connect - Built-in Proxy
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description: Consul Connect comes with a built-in proxy for testing and development.
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---
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# Built-In Proxy Options
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Consul comes with a built-in L4 proxy for testing and development with Consul
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Connect.
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~> **Note:** [Envoy](/docs/connect/proxies/envoy) should be used for production deployments, or when [layer 7 traffic management](/docs/connect/l7-traffic-management) features are needed.
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## Getting Started
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To get started with the built-in proxy and see a working example you can follow the [Getting Started](https://learn.hashicorp.com/tutorials/consul/get-started-service-networking) tutorial.
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## Proxy Config Key Reference
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Below is a complete example of all the configuration options available
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for the built-in proxy.
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```javascript
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{
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"service": {
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...
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"connect": {
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"proxy": {
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"config": {
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"bind_address": "0.0.0.0",
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"bind_port": 20000,
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"tcp_check_address": "192.168.0.1",
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"disable_tcp_check": false,
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"local_service_address": "127.0.0.1:1234",
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"local_connect_timeout_ms": 1000,
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"handshake_timeout_ms": 10000,
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"upstreams": [...]
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},
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"upstreams": [
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{
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...
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"config": {
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"connect_timeout_ms": 1000
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}
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}
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]
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}
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}
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}
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}
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```
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All fields are optional with a sane default.
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- `bind_address` - The address the proxy will bind its
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_public_ mTLS listener to. It defaults to the same address the agent binds to.
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- `bind_port` - The port the proxy will bind its _public_
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mTLS listener to. If not provided, the agent will attempt to assign one from its
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[configured proxy port range](/docs/agent/options#sidecar_min_port) if available.
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By default the range is [20000, 20255] and the port is selected at random from
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that range.
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- `tcp_check_address` - The address the agent will
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run a [TCP health check](/docs/agent/checks) against. By default this is the same
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as the proxy's [bind address](#bind_address) except if the bind address is `0.0.0.0`
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or `[::]` in which case this defaults to `127.0.0.1` and assumes the agent can
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dial the proxy over loopback. For more complex configurations where agent and proxy
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communicate over a bridge for example, this configuration can be used to specify
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a different _address_ (but not port) for the agent to use for health checks if
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it can't talk to the proxy over localhost or its publicly advertised port. The
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check always uses the same port that the proxy is bound to.
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- `disable_tcp_check` - If true, this disables a
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TCP check being setup for the proxy. Default is false.
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- `local_service_address`- The `[address]:port`
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that the proxy should use to connect to the local application instance. By default
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it assumes `127.0.0.1` as the address and takes the port from the service definition's
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`port` field. Note that allowing the application to listen on any non-loopback
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address may expose it externally and bypass Connect's access enforcement. It may
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be useful though to allow non-standard loopback addresses or where an alternative
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known-private IP is available for example when using internal networking between
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containers.
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- `local_connect_timeout_ms` - The number
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of milliseconds the proxy will wait to establish a connection to the _local application_
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before giving up. Defaults to `1000` or 1 second.
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- `handshake_timeout_ms` - The number of milliseconds
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the proxy will wait for _incoming_ mTLS connections to complete the TLS handshake.
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Defaults to `10000` or 10 seconds.
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- `upstreams`- **Deprecated** Upstreams are now specified
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in the `connect.proxy` definition. Upstreams specified in the opaque config map
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here will continue to work for compatibility but it's strongly recommended that
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you move to using the higher level [upstream configuration](/docs/connect/registration/service-registration#upstream-configuration-reference).
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## Proxy Upstream Config Key Reference
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All fields are optional with a sane default.
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- `connect_timeout_ms` - The number of milliseconds
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the proxy will wait to establish a TLS connection to the discovered upstream instance
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before giving up. Defaults to `10000` or 10 seconds.
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