Does ETCD server support HTTP 2.0 request messages from client

[sanamsarath]

etcd version 3.3.2

I am having a etcd client library developed in c++, and is using restful api (HTTP requests) instead of gRPC. we are planning to update the cleint library to use HTTP 2.0.

I am seeing some issues while using --http2-prior-knowledge with curl request while adding/updating the data. Can some one help me if I am using the http2 request correctly. following is the curl command I tried an I see that etcd server is not responding back.

[root@etcd-server-1-0-0-64df58ff74-7p6ms /]# curl -d '{"key": "Zm9v", "value": "YmFy"}' -X POST http://127.0.0.1:2379/v3beta/kv/put -vvv     curl --http2-prior-knowledge -X POST http://127.0.0.1:2379/v3beta/kv/put -vvv
*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to 127.0.0.1 (127.0.0.1) port 2379 (#0)
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x555b99037440)
> POST /v3beta/kv/put HTTP/2
> Host: 127.0.0.1:2379
> User-Agent: curl/7.59.0
> Accept: */*
> 
* Connection state changed (MAX_CONCURRENT_STREAMS == -1)!
< HTTP/2 200 
< content-type: application/grpc
< grpc-status: 12
< grpc-message: unknown service v3beta/kv
< 
* Connection #0 to host 127.0.0.1 left intact
[root@etcd-server-1-0-0-64df58ff74-7p6ms /]# 

I believe grpc-Gateway supports http2 from the grpc-ecosystem/grpc-gateway#703.

Thanks,
Sarath.

[skydoctor]

@gyuho: Any ideas on this? I think the problem is that when the etcd-server received a HTTP/2 request, it follows the gRPC path and the grpc-gateway path is only invoked when a HTTP/1.1 is received. Is there a way to get JSON HTTP/2 requests through the grpc-gateway?

[stale]

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