package main

import "net"

const n = 65500*6

var res = make(chan int, 4096)

func openConn() {
	c, e := net.Dial("tcp", "", "192.168.1.100:5600")
	if e == nil {
		c.Close()
	}
	res <- 1
}

func main() {
	for i := 0 ; i < n ; i++ {
		go openConn()
	}
	for i := 0 ; i < n ; i++ {
		<-res
	}
}