helloworld.greeter.SayHello got INTERNAL_ERROR

[RaymondKYLiu]

Thanks for your awesome gRPC tool.

I build the gRPC example https://github.com/grpc/grpc/tree/master/examples/cpp/helloworld
And run up the greeter_server, but I got an INTERNAL_ERROR code returned from evans.

I am sure the server is running up, because I test with greeter_client.

Evans version: 0.2.8
OS Platform: Ubuntu 16.04, MacOS High Sierra 10.13.3
gRPC Version: v1.10.0

[ktr0731]

thanks for pointing out an issue.
I'll investigate the cause but before it, can you tell me about these questions?

• the gRPC server has recorded some error log?
• at all times, Evans returns this error?

[RaymondKYLiu]

• No error log recorded from gRPC server.
• Yes, always return this error. rpc error: code = Internal desc = stream terminated by RST_STREAM with error code: INTERNAL_ERROR

[RaymondKYLiu]

I have try another gRPC tools: omgRPC and grpcc, and they works.

[ktr0731]

@RaymondKYLiu
it seems to occur when a gRPC request has headers which has same key greater than one.
a temporarily solution is to remove user-agent: evans header config from ~/.config/evans/config.toml.
the problem is not occurring at other servers implemented other languages like Go.
after your comment has arrived, I'll close this issue and create the more described issue.

[RaymondKYLiu]

@ktr0731
Thanks, this problem is not occurring.
Solution: comment the header

  [[request.header]]
   # key = "user-agent"
   # val = "evans"

[ktr0731]

ok, looks good. and I created new issue related to this problem.
so, I close this issue.