}
		outBytes, err := json.Marshal(out)
		if err != nil {
			t.Fatalf("failed to json.Marshal(out): %v", err)
		}
		inMap := map[string]interface{}{}
		if err := json.Unmarshal(inBytes, &inMap); err != nil {
			t.Fatalf("failed to json.Unmarshal(in): %v", err)
		}
		outMap := map[string]interface{}{}
		if err := json.Unmarshal(outBytes, &outMap); err != nil {

	incomingBytes func(n int64) // Record incoming bytes.
	outgoingBytes func(n int64) // Record outgoing bytes.
	trace         *tracer       // tracer for this connection.
	baseFlags     Flags
	outBytes      atomic.Int64
	inBytes       atomic.Int64
	inMessages    atomic.Int64
	outMessages   atomic.Int64

	// For testing only
	debugInConn   net.Conn
	debugOutConn  net.Conn