mirror of https://gitee.com/IrisVega/frp.git
139 lines
3.0 KiB
Go
139 lines
3.0 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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"io"
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"net"
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"time"
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"github.com/fatedier/frp/utils/log"
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kcp "github.com/xtaci/kcp-go"
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)
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// Conn is the interface of connections used in frp.
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type Conn interface {
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net.Conn
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log.Logger
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}
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type WrapLogConn struct {
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net.Conn
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log.Logger
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}
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func WrapConn(c net.Conn) Conn {
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return &WrapLogConn{
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Conn: c,
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Logger: log.NewPrefixLogger(""),
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}
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}
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type WrapReadWriteCloserConn struct {
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io.ReadWriteCloser
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log.Logger
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}
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func (conn *WrapReadWriteCloserConn) LocalAddr() net.Addr {
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return (*net.TCPAddr)(nil)
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}
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func (conn *WrapReadWriteCloserConn) RemoteAddr() net.Addr {
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return (*net.TCPAddr)(nil)
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}
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func (conn *WrapReadWriteCloserConn) SetDeadline(t time.Time) error {
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return nil
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}
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func (conn *WrapReadWriteCloserConn) SetReadDeadline(t time.Time) error {
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return nil
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}
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func (conn *WrapReadWriteCloserConn) SetWriteDeadline(t time.Time) error {
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return nil
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}
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func WrapReadWriteCloserToConn(rwc io.ReadWriteCloser) Conn {
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return &WrapReadWriteCloserConn{
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ReadWriteCloser: rwc,
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Logger: log.NewPrefixLogger(""),
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}
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}
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type Listener interface {
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Accept() (Conn, error)
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Close() error
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log.Logger
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}
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type LogListener struct {
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l net.Listener
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net.Listener
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log.Logger
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}
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func WrapLogListener(l net.Listener) Listener {
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return &LogListener{
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l: l,
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Listener: l,
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Logger: log.NewPrefixLogger(""),
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}
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}
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func (logL *LogListener) Accept() (Conn, error) {
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c, err := logL.l.Accept()
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return WrapConn(c), err
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}
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func ConnectServer(protocol string, addr string) (c Conn, err error) {
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switch protocol {
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case "tcp":
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return ConnectTcpServer(addr)
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case "kcp":
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kcpConn, errRet := kcp.DialWithOptions(addr, nil, 10, 3)
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if errRet != nil {
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err = errRet
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return
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}
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kcpConn.SetStreamMode(true)
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kcpConn.SetWriteDelay(true)
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kcpConn.SetNoDelay(1, 20, 2, 1)
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kcpConn.SetWindowSize(128, 512)
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kcpConn.SetMtu(1350)
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kcpConn.SetACKNoDelay(false)
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kcpConn.SetReadBuffer(4194304)
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kcpConn.SetWriteBuffer(4194304)
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c = WrapConn(kcpConn)
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return
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default:
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return nil, fmt.Errorf("unsupport protocol: %s", protocol)
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}
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}
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func ConnectServerByHttpProxy(httpProxy string, protocol string, addr string) (c Conn, err error) {
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switch protocol {
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case "tcp":
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return ConnectTcpServerByHttpProxy(httpProxy, addr)
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case "kcp":
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// http proxy is not supported for kcp
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return ConnectServer(protocol, addr)
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default:
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return nil, fmt.Errorf("unsupport protocol: %s", protocol)
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}
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}
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