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96 lines
2.4 KiB
96 lines
2.4 KiB
// 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.Infof("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.Infof("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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