tcp reverse proxy

main.go

package main

import (
	"net"
	"fmt"
	"io"
)

func main(){
	listener, err := net.Listen("tcp", ":2333")
	if err != nil {
		fmt.Println(err.Error())
		return
	}

        fmt.Println("ok")

	for {
		conn, err := listener.Accept()
		if err != nil {
			fmt.Println(err.Error())
			return
		}

		defer conn.Close()
		fmt.Println("accepted")

		go func() {
			c, err := net.Dial("tcp", "cryptonightheavy.usa.nicehash.com:3364")
			if err != nil {
				fmt.Println(err.Error())
				return
			}

			defer c.Close()
			
			go io.Copy(conn, c)
			io.Copy(c, conn)
		}()
	}
	return
}