mirror of https://gitee.com/IrisVega/frp.git
112 lines
2.2 KiB
Go
112 lines
2.2 KiB
Go
// Copyright 2016 fatedier, fatedier@gmail.com
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package net
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import (
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"fmt"
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"net"
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"github.com/fatedier/frp/utils/log"
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)
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type TcpListener struct {
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net.Addr
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listener net.Listener
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accept chan Conn
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closeFlag bool
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log.Logger
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}
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func ListenTcp(bindAddr string, bindPort int) (l *TcpListener, err error) {
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tcpAddr, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("%s:%d", bindAddr, bindPort))
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if err != nil {
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return l, err
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}
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listener, err := net.ListenTCP("tcp", tcpAddr)
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if err != nil {
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return l, err
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}
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l = &TcpListener{
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Addr: listener.Addr(),
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listener: listener,
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accept: make(chan Conn),
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closeFlag: false,
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Logger: log.NewPrefixLogger(""),
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}
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go func() {
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for {
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conn, err := listener.AcceptTCP()
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if err != nil {
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if l.closeFlag {
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close(l.accept)
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return
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}
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continue
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}
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c := NewTcpConn(conn)
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l.accept <- c
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}
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}()
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return l, err
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}
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// Wait util get one new connection or listener is closed
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// if listener is closed, err returned.
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func (l *TcpListener) Accept() (Conn, error) {
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conn, ok := <-l.accept
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if !ok {
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return conn, fmt.Errorf("channel for tcp listener closed")
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}
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return conn, nil
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}
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func (l *TcpListener) Close() error {
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if !l.closeFlag {
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l.closeFlag = true
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l.listener.Close()
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}
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return nil
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}
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// Wrap for TCPConn.
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type TcpConn struct {
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net.Conn
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log.Logger
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}
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func NewTcpConn(conn net.Conn) (c *TcpConn) {
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c = &TcpConn{
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Conn: conn,
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Logger: log.NewPrefixLogger(""),
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}
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return
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}
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func ConnectTcpServer(addr string) (c Conn, err error) {
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servertAddr, err := net.ResolveTCPAddr("tcp", addr)
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if err != nil {
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return
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}
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conn, err := net.DialTCP("tcp", nil, servertAddr)
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if err != nil {
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return
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}
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c = NewTcpConn(conn)
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return
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}
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