89 lines
2.9 KiB
Go
89 lines
2.9 KiB
Go
package inbound
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import (
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"context"
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"net"
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"github.com/sagernet/sing-box/adapter"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing/common/control"
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E "github.com/sagernet/sing/common/exceptions"
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M "github.com/sagernet/sing/common/metadata"
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N "github.com/sagernet/sing/common/network"
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)
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func (a *myInboundAdapter) ListenTCP() (net.Listener, error) {
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var err error
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bindAddr := M.SocksaddrFrom(a.listenOptions.Listen.Build(), a.listenOptions.ListenPort)
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var tcpListener net.Listener
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var listenConfig net.ListenConfig
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// TODO: Add an option to customize the keep alive period
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listenConfig.KeepAlive = C.TCPKeepAliveInitial
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listenConfig.Control = control.Append(listenConfig.Control, control.SetKeepAlivePeriod(C.TCPKeepAliveInitial, C.TCPKeepAliveInterval))
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if a.listenOptions.TCPMultiPath {
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if !go121Available {
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return nil, E.New("MultiPath TCP requires go1.21, please recompile your binary.")
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}
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setMultiPathTCP(&listenConfig)
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}
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if a.listenOptions.TCPFastOpen {
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if !go120Available {
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return nil, E.New("TCP Fast Open requires go1.20, please recompile your binary.")
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}
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tcpListener, err = listenTFO(listenConfig, a.ctx, M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.String())
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} else {
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tcpListener, err = listenConfig.Listen(a.ctx, M.NetworkFromNetAddr(N.NetworkTCP, bindAddr.Addr), bindAddr.String())
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}
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if err == nil {
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a.logger.Info("tcp server started at ", tcpListener.Addr())
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}
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if a.listenOptions.ProxyProtocol || a.listenOptions.ProxyProtocolAcceptNoHeader {
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return nil, E.New("Proxy Protocol is deprecated and removed in sing-box 1.6.0")
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}
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a.tcpListener = tcpListener
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return tcpListener, err
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}
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func (a *myInboundAdapter) loopTCPIn() {
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tcpListener := a.tcpListener
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for {
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conn, err := tcpListener.Accept()
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if err != nil {
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//goland:noinspection GoDeprecation
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//nolint:staticcheck
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if netError, isNetError := err.(net.Error); isNetError && netError.Temporary() {
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a.logger.Error(err)
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continue
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}
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if a.inShutdown.Load() && E.IsClosed(err) {
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return
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}
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a.tcpListener.Close()
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a.logger.Error("serve error: ", err)
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continue
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}
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go a.injectTCP(conn, adapter.InboundContext{})
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}
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}
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func (a *myInboundAdapter) injectTCP(conn net.Conn, metadata adapter.InboundContext) {
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ctx := log.ContextWithNewID(a.ctx)
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metadata = a.createMetadata(conn, metadata)
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a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
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hErr := a.connHandler.NewConnection(ctx, conn, metadata)
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if hErr != nil {
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conn.Close()
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a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
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}
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}
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func (a *myInboundAdapter) routeTCP(ctx context.Context, conn net.Conn, metadata adapter.InboundContext) {
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a.logger.InfoContext(ctx, "inbound connection from ", metadata.Source)
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hErr := a.newConnection(ctx, conn, metadata)
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if hErr != nil {
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conn.Close()
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a.NewError(ctx, E.Cause(hErr, "process connection from ", metadata.Source))
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}
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}
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