feat: expose mplex ID as a constant

Author: aschmahmann

p2p/muxer/mplex/transport.go

@@ -11,6 +11,8 @@ import (
 // DefaultTransport has default settings for Transport
 var DefaultTransport = &Transport{}
 
+const ID = "/mplex/6.7.0"
+
 var _ network.Multiplexer = &Transport{}
 
 // Transport implements mux.Multiplexer that constructs

test-plans/cmd/ping/main.go

@@ -94,7 +94,7 @@ func main() {
 	case "yamux":
 		options = append(options, libp2p.Muxer(yamux.ID, yamux.DefaultTransport))
 	case "mplex":
-		options = append(options, libp2p.Muxer("/mplex/6.7.0", mplex.DefaultTransport))
+		options = append(options, libp2p.Muxer(mplex.ID, mplex.DefaultTransport))
 	case "quic":
 	default:
 		log.Fatalf("Unsupported muxer: %s", muxer)