Blocking TCP Echo Server

blocking_tcp_echo_server.go

package main

import (
	"io"
	"net"
)

var host, port string

func handleConnection(c net.Conn, b chan bool) {
	defer func() {
		c.Close()
		<-b // will unblock
	}()
	io.Copy(c, c)
}

func main() {
	blocker := make(chan bool, 1)

	host = "localhost"
	port = "7"

	listener, _ := net.Listen("tcp", net.JoinHostPort(host, port))

	for {
		blocker <- true // will block
		connection, err := listener.Accept()
		if err != nil {
			continue
		}
		go handleConnection(connection, blocker)
	}
}