func()

in walkthroughs/howto-timeout-policy/src/colorgateway/main.go [171:205]

• 31 lines of code
• 5 McCabe index (conditional complexity)

func (h *tcpEchoHandler) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
	endpoint, err := getTCPEchoEndpoint()
	if err != nil {
		writer.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(writer, "tcpecho endpoint is not set")
		return
	}

	log.Printf("Dialing tcp endpoint %s", endpoint)
	conn, err := net.Dial("tcp", endpoint)
	if err != nil {
		writer.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(writer, "Dial failed, err:%s", err.Error())
		return
	}
	defer conn.Close()

	strEcho := "Hello from gateway"
	log.Printf("Writing '%s'", strEcho)
	_, err = fmt.Fprintf(conn, strEcho)
	if err != nil {
		writer.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(writer, "Write to server failed, err:%s", err.Error())
		return
	}

	reply, err := bufio.NewReader(conn).ReadString('\n')
	if err != nil {
		writer.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(writer, "Read from server failed, err:%s", err.Error())
		return
	}

	fmt.Fprintf(writer, "Response from tcpecho server: %s", reply)
}