mirror of
https://github.com/ZeroDream-CN/SakuraFrp
synced 2024-11-22 07:19:34 +00:00
112 lines
2.2 KiB
Go
112 lines
2.2 KiB
Go
// Copyright 2016 fatedier, fatedier@gmail.com
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package net
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
|
|
"github.com/fatedier/frp/utils/log"
|
|
)
|
|
|
|
type TcpListener struct {
|
|
net.Addr
|
|
listener net.Listener
|
|
accept chan Conn
|
|
closeFlag bool
|
|
log.Logger
|
|
}
|
|
|
|
func ListenTcp(bindAddr string, bindPort int) (l *TcpListener, err error) {
|
|
tcpAddr, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("%s:%d", bindAddr, bindPort))
|
|
if err != nil {
|
|
return l, err
|
|
}
|
|
listener, err := net.ListenTCP("tcp", tcpAddr)
|
|
if err != nil {
|
|
return l, err
|
|
}
|
|
|
|
l = &TcpListener{
|
|
Addr: listener.Addr(),
|
|
listener: listener,
|
|
accept: make(chan Conn),
|
|
closeFlag: false,
|
|
Logger: log.NewPrefixLogger(""),
|
|
}
|
|
|
|
go func() {
|
|
for {
|
|
conn, err := listener.AcceptTCP()
|
|
if err != nil {
|
|
if l.closeFlag {
|
|
close(l.accept)
|
|
return
|
|
}
|
|
continue
|
|
}
|
|
|
|
c := NewTcpConn(conn)
|
|
l.accept <- c
|
|
}
|
|
}()
|
|
return l, err
|
|
}
|
|
|
|
// Wait util get one new connection or listener is closed
|
|
// if listener is closed, err returned.
|
|
func (l *TcpListener) Accept() (Conn, error) {
|
|
conn, ok := <-l.accept
|
|
if !ok {
|
|
return conn, fmt.Errorf("channel for tcp listener closed")
|
|
}
|
|
return conn, nil
|
|
}
|
|
|
|
func (l *TcpListener) Close() error {
|
|
if !l.closeFlag {
|
|
l.closeFlag = true
|
|
l.listener.Close()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Wrap for TCPConn.
|
|
type TcpConn struct {
|
|
net.Conn
|
|
log.Logger
|
|
}
|
|
|
|
func NewTcpConn(conn net.Conn) (c *TcpConn) {
|
|
c = &TcpConn{
|
|
Conn: conn,
|
|
Logger: log.NewPrefixLogger(""),
|
|
}
|
|
return
|
|
}
|
|
|
|
func ConnectTcpServer(addr string) (c Conn, err error) {
|
|
servertAddr, err := net.ResolveTCPAddr("tcp", addr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
conn, err := net.DialTCP("tcp", nil, servertAddr)
|
|
if err != nil {
|
|
return
|
|
}
|
|
c = NewTcpConn(conn)
|
|
return
|
|
}
|