f9e8b3a3fa
Implement a simplified version of STCP functionality. * **Client Proxy Configuration and Handling** - Add `STCPProxyConfig` to the `pxyConfs` slice in `client/proxy/general_tcp.go`. * **Client Visitor Configuration and Handling** - Add `STCPVisitorConfig` to the `cfg` struct in `client/visitor/stcp.go`. * **Command Registration and Initialization** - Add `STCP` to the `proxyTypes` and `visitorTypes` slices in `cmd/frpc/sub/proxy.go`. * **Configuration Examples** - Add example configurations for `STCP` proxy and visitor in `conf/frpc_full_example.toml`. - Add example configurations for `STCP` proxy and visitor in `conf/legacy/frpc_legacy_full.ini`. * **Configuration Structures** - Add `STCPProxyConfig` struct and include it in the `proxyConfigTypeMap` in `pkg/config/v1/proxy.go`. - Add `STCPVisitorConfig` struct and include it in the `visitorConfigTypeMap` in `pkg/config/v1/visitor.go`. * **Configuration Validation** - Add validation for `STCPProxyConfig` in `pkg/config/v1/validation/proxy.go`. - Add validation for `STCPVisitorConfig` in `pkg/config/v1/validation/visitor.go`. --- For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/fatedier/frp?shareId=XXXX-XXXX-XXXX-XXXX).
122 lines
2.6 KiB
Go
122 lines
2.6 KiB
Go
package visitor
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import (
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"io"
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"net"
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"strconv"
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"time"
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libio "github.com/fatedier/golib/io"
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v1 "github.com/fatedier/frp/pkg/config/v1"
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"github.com/fatedier/frp/pkg/msg"
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"github.com/fatedier/frp/pkg/util/util"
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"github.com/fatedier/frp/pkg/util/xlog"
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)
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type STCPVisitor struct {
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*BaseVisitor
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cfg *v1.STCPVisitorConfig
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}
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func (sv *STCPVisitor) Run() (err error) {
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if sv.cfg.BindPort > 0 {
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sv.l, err = net.Listen("tcp", net.JoinHostPort(sv.cfg.BindAddr, strconv.Itoa(sv.cfg.BindPort)))
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if err != nil {
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return
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}
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go sv.worker()
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}
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go sv.internalConnWorker()
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return
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}
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func (sv *STCPVisitor) Close() {
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sv.BaseVisitor.Close()
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}
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func (sv *STCPVisitor) worker() {
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xl := xlog.FromContextSafe(sv.ctx)
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for {
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conn, err := sv.l.Accept()
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if err != nil {
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xl.Warnf("stcp local listener closed")
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return
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}
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go sv.handleConn(conn)
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}
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}
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func (sv *STCPVisitor) internalConnWorker() {
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xl := xlog.FromContextSafe(sv.ctx)
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for {
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conn, err := sv.internalLn.Accept()
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if err != nil {
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xl.Warnf("stcp internal listener closed")
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return
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}
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go sv.handleConn(conn)
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}
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}
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func (sv *STCPVisitor) handleConn(userConn net.Conn) {
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xl := xlog.FromContextSafe(sv.ctx)
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defer userConn.Close()
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xl.Debugf("get a new stcp user connection")
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visitorConn, err := sv.helper.ConnectServer()
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if err != nil {
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return
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}
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defer visitorConn.Close()
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now := time.Now().Unix()
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newVisitorConnMsg := &msg.NewVisitorConn{
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RunID: sv.helper.RunID(),
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ProxyName: sv.cfg.ServerName,
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SignKey: util.GetAuthKey(sv.cfg.SecretKey, now),
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Timestamp: now,
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UseEncryption: sv.cfg.Transport.UseEncryption,
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UseCompression: sv.cfg.Transport.UseCompression,
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}
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err = msg.WriteMsg(visitorConn, newVisitorConnMsg)
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if err != nil {
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xl.Warnf("send newVisitorConnMsg to server error: %v", err)
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return
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}
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var newVisitorConnRespMsg msg.NewVisitorConnResp
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_ = visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
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err = msg.ReadMsgInto(visitorConn, &newVisitorConnRespMsg)
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if err != nil {
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xl.Warnf("get newVisitorConnRespMsg error: %v", err)
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return
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}
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_ = visitorConn.SetReadDeadline(time.Time{})
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if newVisitorConnRespMsg.Error != "" {
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xl.Warnf("start new visitor connection error: %s", newVisitorConnRespMsg.Error)
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return
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}
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var remote io.ReadWriteCloser
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remote = visitorConn
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if sv.cfg.Transport.UseEncryption {
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remote, err = libio.WithEncryption(remote, []byte(sv.cfg.SecretKey))
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if err != nil {
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xl.Errorf("create encryption stream error: %v", err)
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return
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}
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}
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if sv.cfg.Transport.UseCompression {
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var recycleFn func()
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remote, recycleFn = libio.WithCompressionFromPool(remote)
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defer recycleFn()
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}
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libio.Join(userConn, remote)
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}
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