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113 lines
3.4 KiB
Markdown
113 lines
3.4 KiB
Markdown
---
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title: gRPC 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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proxying gRPC traffic:
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gRPC client -> APISIX -> gRPC/gRPCS server
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## Parameters
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* `scheme`: the `scheme` of the route's upstream must be `grpc` or `grpcs`.
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* `uri`: format likes /service/method, Example：/helloworld.Greeter/SayHello
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### Example
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#### create proxying gRPC route
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Here's an example, to proxying gRPC service by specified route:
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* attention: the `scheme` of the route's upstream must be `grpc` or `grpcs`.
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* attention: APISIX use TLS‑encrypted HTTP/2 to expose gRPC service, so need to [config SSL certificate](https.md)
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* attention: APISIX also support to expose gRPC service with plaintext HTTP/2, which does not rely on TLS, usually used to proxy gRPC service in intranet environment
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* the grpc server example：[grpc_server_example](https://github.com/iresty/grpc_server_example)
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```shell
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curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"methods": ["POST", "GET"],
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"uri": "/helloworld.Greeter/SayHello",
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"upstream": {
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"scheme": "grpc",
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"type": "roundrobin",
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"nodes": {
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"127.0.0.1:50051": 1
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}
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}
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}'
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```
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#### testing HTTP/2 with TLS‑encrypted
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Invoking the route created before：
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```shell
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$ grpcurl -insecure -import-path /pathtoprotos -proto helloworld.proto -d '{"name":"apisix"}' 127.0.0.1:9443 helloworld.Greeter.SayHello
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{
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"message": "Hello apisix"
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}
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```
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This means that the proxying is working.
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#### testing HTTP/2 with plaintext
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By default, the APISIX only listens to `9443` for TLS‑encrypted HTTP/2. You can support HTTP/2 with plaintext via the `node_listen` section under `apisix` in `conf/config.yaml`:
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```yaml
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apisix:
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node_listen:
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- port: 9080
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enable_http2: false
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- port: 9081
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enable_http2: true
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```
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Invoking the route created before：
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```shell
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$ grpcurl -plaintext -import-path /pathtoprotos -proto helloworld.proto -d '{"name":"apisix"}' 127.0.0.1:9081 helloworld.Greeter.SayHello
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{
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"message": "Hello apisix"
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}
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```
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This means that the proxying is working.
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### gRPCS
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If your gRPC service encrypts with TLS by itself (so called `gPRCS`, gPRC + TLS), you need to change the `scheme` to `grpcs`. The example above runs gRPCS service on port 50052, to proxy gRPC request, we need to use the configuration below:
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```shell
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curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"methods": ["POST", "GET"],
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"uri": "/helloworld.Greeter/SayHello",
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"upstream": {
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"scheme": "grpcs",
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"type": "roundrobin",
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"nodes": {
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"127.0.0.1:50052": 1
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}
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}
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}'
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```
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