mirror of
https://github.com/fatedier/frp.git
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605f3bdece
Extract two shared helpers to eliminate duplicated code across STCP, SUDP, and XTCP visitors: - dialRawVisitorConn: handles ConnectServer + NewVisitorConn handshake (auth, sign key, 10s read deadline, error check) - wrapVisitorConn: handles encryption + pooled compression wrapping, returning a recycleFn for pool resource cleanup SUDP is upgraded from WithCompression to WithCompressionFromPool, aligning with the pooled compression used by STCP and XTCP.
86 lines
2.0 KiB
Go
86 lines
2.0 KiB
Go
// Copyright 2017 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 visitor
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import (
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"net"
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"strconv"
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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/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.acceptLoop(sv.l, "stcp local", sv.handleConn)
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}
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go sv.acceptLoop(sv.internalLn, "stcp internal", sv.handleConn)
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if sv.plugin != nil {
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sv.plugin.Start()
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}
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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) handleConn(userConn net.Conn) {
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xl := xlog.FromContextSafe(sv.ctx)
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var tunnelErr error
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defer func() {
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if tunnelErr != nil {
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if eConn, ok := userConn.(interface{ CloseWithError(error) error }); ok {
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_ = eConn.CloseWithError(tunnelErr)
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return
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}
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}
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userConn.Close()
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}()
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xl.Debugf("get a new stcp user connection")
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visitorConn, err := sv.dialRawVisitorConn(sv.cfg.GetBaseConfig())
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if err != nil {
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xl.Warnf("dialRawVisitorConn error: %v", err)
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tunnelErr = err
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return
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}
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defer visitorConn.Close()
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remote, recycleFn, err := wrapVisitorConn(visitorConn, sv.cfg.GetBaseConfig())
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if err != nil {
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xl.Warnf("wrapVisitorConn error: %v", err)
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tunnelErr = err
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return
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}
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defer recycleFn()
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libio.Join(userConn, remote)
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}
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