listen testing

testlisten.go

package main

import (
	"log"
	"net"
	"time"
)

func accept(l net.Listener, sigBack chan struct{}) {
	conn, err := l.Accept()
	log.Println("past accept: ", conn)
	if err != nil {
		log.Println("accept error: ", err)
	}
	close(sigBack)
}

func main() {
	l, err := net.Listen("tcp", "127.0.0.1:44444")
	if err != nil {
		log.Fatalln("listen error: ", err)
	}
	sigBack := make(chan struct{})
	go accept(l, sigBack)

	time.Sleep(2 * time.Second)
	l.Close()
	<-sigBack
	log.Println("clean exit")
}