64 lines
894 B
Go
64 lines
894 B
Go
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package main
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import (
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"log"
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"net"
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)
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type Server struct {
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Addr string
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Target string
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}
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func (s *Server) ListenAndServe() error {
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listener, err := net.Listen("tcp", s.Addr)
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if err != nil {
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return err
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}
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return s.serve(listener)
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}
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func (s *Server) serve(ln net.Listener) error {
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for {
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conn, err := ln.Accept()
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if err != nil {
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log.Println(err)
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continue
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}
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go s.handleConn(conn)
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}
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}
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func (s *Server) handleConn(conn net.Conn) {
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rconn, err := net.Dial("tcp", s.Target)
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if err != nil {
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return
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}
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var pipe = func(src, dst net.Conn) {
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defer func() {
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conn.Close()
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rconn.Close()
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}()
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buff := make([]byte, 65535)
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for {
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n, err := src.Read(buff)
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if err != nil {
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log.Println(err)
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return
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}
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b := buff[:n]
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_, err = dst.Write(b)
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if err != nil {
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log.Println(err)
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return
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}
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}
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}
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go pipe(conn, rconn)
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go pipe(rconn, conn)
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}
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