mirror of https://gitee.com/IrisVega/frp.git
97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
// Copyright 2019 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 proxy
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import (
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"fmt"
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"net"
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"reflect"
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"strconv"
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v1 "github.com/fatedier/frp/pkg/config/v1"
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)
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func init() {
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RegisterProxyFactory(reflect.TypeOf(&v1.TCPProxyConfig{}), NewTCPProxy)
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}
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type TCPProxy struct {
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*BaseProxy
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cfg *v1.TCPProxyConfig
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realBindPort int
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}
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func NewTCPProxy(baseProxy *BaseProxy) Proxy {
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unwrapped, ok := baseProxy.GetConfigurer().(*v1.TCPProxyConfig)
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if !ok {
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return nil
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}
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baseProxy.usedPortsNum = 1
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return &TCPProxy{
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BaseProxy: baseProxy,
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cfg: unwrapped,
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}
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}
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func (pxy *TCPProxy) Run() (remoteAddr string, err error) {
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xl := pxy.xl
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if pxy.cfg.LoadBalancer.Group != "" {
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l, realBindPort, errRet := pxy.rc.TCPGroupCtl.Listen(pxy.name, pxy.cfg.LoadBalancer.Group, pxy.cfg.LoadBalancer.GroupKey,
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pxy.serverCfg.ProxyBindAddr, pxy.cfg.RemotePort)
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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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defer func() {
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if err != nil {
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l.Close()
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}
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}()
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pxy.realBindPort = realBindPort
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pxy.listeners = append(pxy.listeners, l)
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xl.Info("tcp proxy listen port [%d] in group [%s]", pxy.cfg.RemotePort, pxy.cfg.LoadBalancer.Group)
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} else {
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pxy.realBindPort, err = pxy.rc.TCPPortManager.Acquire(pxy.name, pxy.cfg.RemotePort)
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if err != nil {
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return
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}
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defer func() {
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if err != nil {
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pxy.rc.TCPPortManager.Release(pxy.realBindPort)
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}
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}()
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listener, errRet := net.Listen("tcp", net.JoinHostPort(pxy.serverCfg.ProxyBindAddr, strconv.Itoa(pxy.realBindPort)))
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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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pxy.listeners = append(pxy.listeners, listener)
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xl.Info("tcp proxy listen port [%d]", pxy.cfg.RemotePort)
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}
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pxy.cfg.RemotePort = pxy.realBindPort
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remoteAddr = fmt.Sprintf(":%d", pxy.realBindPort)
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pxy.startCommonTCPListenersHandler()
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return
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}
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func (pxy *TCPProxy) Close() {
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pxy.BaseProxy.Close()
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if pxy.cfg.LoadBalancer.Group == "" {
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pxy.rc.TCPPortManager.Release(pxy.realBindPort)
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}
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}
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