func startTCPListener()

in tcpdumpw/main.go [491:519]

• 25 lines of code
• 6 McCabe index (conditional complexity)

func startTCPListener(ctx context.Context, port *uint, job *tcpdumpJob, stopChannel chan<- bool) {
	tcpListener, tcpListenerErr := net.Listen("tcp", fmt.Sprintf(":%d", *port))

	if tcpListenerErr != nil {
		jlog(ERROR, &emptyTcpdumpJob, fmt.Sprintf("failed to start the TCP listener: %v", tcpListenerErr))
		os.Exit(5)
	}

	for {
		select {
		case <-ctx.Done():
			var err error
			if err = tcpListener.Close(); err != nil {
				jlog(ERROR, job, fmt.Sprintf("failed to stop TCP listener: %d | %v", *port, err))
			} else {
				jlog(INFO, job, fmt.Sprintf("stopped TCP listener: %d", *port))
			}
			stopChannel <- (err == nil)
			return

		// accept connections until context is done
		default:
			conn, err := tcpListener.Accept()
			if err == nil {
				conn.Close()
			}
		}
	}
}