Cannot connect to query-service via gRPC

[yurishkuro]

Reported by @32leaves on Gitter.

Requirement - what kind of business use case are you trying to solve?

Programmatically retrieve traces via gRPC endpoint on all-in-one.

Problem - what in Jaeger blocks you from solving the requirement?

https://gist.github.com/32leaves/8d422784ad7cb105ff4b1a36e8726222

gRPC client cannot complete the handshake with the server.

Proposal - what do you suggest to solve the problem or improve the existing situation?

Looks like a bug. We should have a working example and a unit test.

Any open questions to address

At Uber we have an internal client library that works, but we're running gRPC server on a separate port from HTTP server, so the issue might be with the cmux.