// serve accepts incoming connections on the listener l, // creating a new service goroutine for each. The service goroutines // read requests and then call handler to reply to them. func serve(l net.Listener, grpcS *grpc.Server, handler http.Handler, readTimeout time.Duration) error { // TODO: assert net.Listener type? Arbitrary listener might break HTTPS server which // expect a TLS Conn type. httpl := l if grpcS != nil { m := cmux.New(l) grpcl := m.Match(cmux.HTTP2HeaderField("content-type", "application/grpc")) httpl = m.Match(cmux.Any()) go func() { plog.Fatal(m.Serve()) }() go plog.Fatal(grpcS.Serve(grpcl)) } logger := defaultLog.New(ioutil.Discard, "etcdhttp", 0) // TODO: add debug flag; enable logging when debug flag is set srv := &http.Server{ Handler: handler, ReadTimeout: readTimeout, ErrorLog: logger, // do not log user error } return srv.Serve(httpl) }