Cannot get Matchers to mux h2c gRPC and HTTP2(REST) requests about cmux HOT 4 OPEN

see my explain #79

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I think the issue you will find here is that your gRPC requests and HTTP2 requests are likely multiplexed over the same connection. cmux does matching at the connection level, so you end up with detecting one way or the other based on the first request, then all future requests are locked to whatever was originally matched.

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You can use cmux.HTTP2MatchHeaderFieldSendSettings("content-type, "application/grpc") match gRPC first, and then use cmux.Any match other proto and create new listener for new cmux.CMux

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I was unable to get it to work with cmux, h2 REST would always fail to connect

I ended up following a similar approach to this:
https://ahmet.im/blog/grpc-http-mux-go/
For my use case this ended up working (http1.1, h2 REST and grpc all work as expected)

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