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103 lines
2.5 KiB
103 lines
2.5 KiB
package dokodemo
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import (
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"io"
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"net"
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"sync"
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"github.com/v2ray/v2ray-core/app"
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"github.com/v2ray/v2ray-core/common/alloc"
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"github.com/v2ray/v2ray-core/common/log"
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v2net "github.com/v2ray/v2ray-core/common/net"
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"github.com/v2ray/v2ray-core/common/retry"
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"github.com/v2ray/v2ray-core/proxy/dokodemo/config/json"
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)
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type DokodemoDoor struct {
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config *json.DokodemoConfig
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accepting bool
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address v2net.Address
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dispatcher app.PacketDispatcher
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}
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func NewDokodemoDoor(dispatcher app.PacketDispatcher, config *json.DokodemoConfig) *DokodemoDoor {
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d := &DokodemoDoor{
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config: config,
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dispatcher: dispatcher,
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}
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ip := net.ParseIP(config.Host)
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if ip != nil {
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d.address = v2net.IPAddress(ip, uint16(config.Port))
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} else {
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d.address = v2net.DomainAddress(config.Host, uint16(config.Port))
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}
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return d
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}
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func (this *DokodemoDoor) Listen(port uint16) error {
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if this.config.Network.HasNetwork(v2net.TCPNetwork) {
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err := this.ListenTCP(port)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (this *DokodemoDoor) ListenTCP(port uint16) error {
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tcpListener, err := net.ListenTCP("tcp", &net.TCPAddr{
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IP: []byte{0, 0, 0, 0},
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Port: int(port),
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Zone: "",
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})
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if err != nil {
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log.Error("Dokodemo failed to listen on port %d: %v", port, err)
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return err
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}
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this.accepting = true
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go this.AcceptTCPConnections(tcpListener)
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return nil
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}
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func (this *DokodemoDoor) AcceptTCPConnections(tcpListener *net.TCPListener) {
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for this.accepting {
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retry.Timed(100, 100).On(func() error {
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connection, err := tcpListener.AcceptTCP()
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if err != nil {
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log.Error("Dokodemo failed to accept new connections: %v", err)
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return err
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}
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go this.HandleTCPConnection(connection)
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return nil
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})
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}
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}
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func (this *DokodemoDoor) HandleTCPConnection(conn *net.TCPConn) {
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defer conn.Close()
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packet := v2net.NewPacket(v2net.NewTCPDestination(this.address), nil, true)
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ray := this.dispatcher.DispatchToOutbound(packet)
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var inputFinish, outputFinish sync.Mutex
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inputFinish.Lock()
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outputFinish.Lock()
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reader := v2net.NewTimeOutReader(this.config.Timeout, conn)
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go dumpInput(reader, ray.InboundInput(), &inputFinish)
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go dumpOutput(conn, ray.InboundOutput(), &outputFinish)
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outputFinish.Lock()
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}
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func dumpInput(reader io.Reader, input chan<- *alloc.Buffer, finish *sync.Mutex) {
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v2net.ReaderToChan(input, reader)
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finish.Unlock()
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close(input)
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}
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func dumpOutput(writer io.Writer, output <-chan *alloc.Buffer, finish *sync.Mutex) {
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v2net.ChanToWriter(writer, output)
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finish.Unlock()
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}
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