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137 lines
3.9 KiB
Markdown
137 lines
3.9 KiB
Markdown
---
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title: Stream Proxy
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---
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<!--
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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-->
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TCP is the protocol for many popular applications and services, such as LDAP, MySQL, and RTMP. UDP (User Datagram Protocol) is the protocol for many popular non-transactional applications, such as DNS, syslog, and RADIUS.
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APISIX can dynamically load balancing TCP/UDP proxy. In Nginx world, we call TCP/UDP proxy to stream proxy, we followed this statement.
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## How to enable stream proxy?
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Setting the `stream_proxy` option in `conf/config.yaml`, specify a list of addresses that require dynamic proxy.
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By default, no stream proxy is enabled.
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```yaml
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apisix:
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stream_proxy: # TCP/UDP proxy
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tcp: # TCP proxy address list
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- 9100
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- "127.0.0.1:9101"
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udp: # UDP proxy address list
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- 9200
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- "127.0.0.1:9211"
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```
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## How to set route?
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Here is a mini example:
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```shell
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curl http://127.0.0.1:9080/apisix/admin/stream_routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"remote_addr": "127.0.0.1",
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"upstream": {
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"nodes": {
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"127.0.0.1:1995": 1
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},
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"type": "roundrobin"
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}
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}'
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```
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It means APISIX will proxy the request to `127.0.0.1:1995` which the client remote address is `127.0.0.1`.
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For more use cases, please take a look at [test case](https://github.com/apache/apisix/blob/master/t/stream-node/sanity.t).
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## More route match options
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And we can add more options to match a route.
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Here is an example:
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```shell
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curl http://127.0.0.1:9080/apisix/admin/stream_routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"server_addr": "127.0.0.1",
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"server_port": 2000,
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"upstream": {
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"nodes": {
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"127.0.0.1:1995": 1
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},
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"type": "roundrobin"
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}
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}'
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```
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It means APISIX will proxy the request to `127.0.0.1:1995` which the server address is `127.0.0.1` and the server port is equal to `2000`.
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Read [Admin API's Stream Route section](./admin-api.md#stream-route) for the complete options list.
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## Accept TLS over TCP
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APISIX can accept TLS over TCP.
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First of all, we need to enable TLS for the TCP address:
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```yaml
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apisix:
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stream_proxy: # TCP/UDP proxy
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tcp: # TCP proxy address list
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- addr: 9100
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tls: true
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```
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Second, we need to configure certificate for the given SNI.
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See [Admin API's SSL section](./admin-api.md#ssl) for how to do.
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Third, we need to configure a stream route to match and proxy it to the upstream:
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```shell
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curl http://127.0.0.1:9080/apisix/admin/stream_routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"remote_addr": "127.0.0.1",
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"upstream": {
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"nodes": {
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"127.0.0.1:1995": 1
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},
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"type": "roundrobin"
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}
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}'
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```
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When the connection is TLS over TCP, we can use the SNI to match a route, like:
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```shell
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curl http://127.0.0.1:9080/apisix/admin/stream_routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"sni": "a.test.com",
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"upstream": {
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"nodes": {
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"127.0.0.1:5991": 1
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},
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"type": "roundrobin"
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}
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}'
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```
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In this case, a connection handshaked with SNI `a.test.com` will be proxied to `127.0.0.1:5991`.
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