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@ -13,31 +13,35 @@ import (
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"v2ray.com/core/transport/internet/internal"
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)
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type UDPPayload struct {
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// Payload represents a single UDP payload.
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type Payload struct {
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payload *buf.Buffer
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session *proxy.SessionInfo
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}
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type UDPPayloadHandler func(*buf.Buffer, *proxy.SessionInfo)
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// PayloadHandler is function to handle Payload.
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type PayloadHandler func(*buf.Buffer, *proxy.SessionInfo)
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type UDPPayloadQueue struct {
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queue []chan UDPPayload
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callback UDPPayloadHandler
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// PayloadQueue is a queue of Payload.
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type PayloadQueue struct {
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queue []chan Payload
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callback PayloadHandler
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}
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func NewUDPPayloadQueue(option ListenOption) *UDPPayloadQueue {
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queue := &UDPPayloadQueue{
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// NewPayloadQueue returns a new PayloadQueue.
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func NewPayloadQueue(option ListenOption) *PayloadQueue {
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queue := &PayloadQueue{
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callback: option.Callback,
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queue: make([]chan UDPPayload, option.Concurrency),
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queue: make([]chan Payload, option.Concurrency),
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}
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for i := range queue.queue {
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queue.queue[i] = make(chan UDPPayload, 64)
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queue.queue[i] = make(chan Payload, 64)
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go queue.Dequeue(queue.queue[i])
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}
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return queue
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}
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func (v *UDPPayloadQueue) Enqueue(payload UDPPayload) {
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func (v *PayloadQueue) Enqueue(payload Payload) {
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size := len(v.queue)
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idx := 0
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if size > 1 {
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@ -53,33 +57,33 @@ func (v *UDPPayloadQueue) Enqueue(payload UDPPayload) {
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}
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}
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func (v *UDPPayloadQueue) Dequeue(queue <-chan UDPPayload) {
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func (v *PayloadQueue) Dequeue(queue <-chan Payload) {
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for payload := range queue {
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v.callback(payload.payload, payload.session)
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}
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}
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func (v *UDPPayloadQueue) Close() {
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func (v *PayloadQueue) Close() {
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for _, queue := range v.queue {
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close(queue)
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}
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}
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type ListenOption struct {
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Callback UDPPayloadHandler
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Callback PayloadHandler
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ReceiveOriginalDest bool
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Concurrency int
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}
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type UDPHub struct {
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type Hub struct {
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sync.RWMutex
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conn *net.UDPConn
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cancel *signal.CancelSignal
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queue *UDPPayloadQueue
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queue *PayloadQueue
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option ListenOption
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}
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func ListenUDP(address v2net.Address, port v2net.Port, option ListenOption) (*UDPHub, error) {
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func ListenUDP(address v2net.Address, port v2net.Port, option ListenOption) (*Hub, error) {
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if option.Concurrency < 1 {
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option.Concurrency = 1
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}
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@ -102,9 +106,9 @@ func ListenUDP(address v2net.Address, port v2net.Port, option ListenOption) (*UD
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return nil, err
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}
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}
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hub := &UDPHub{
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hub := &Hub{
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conn: udpConn,
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queue: NewUDPPayloadQueue(option),
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queue: NewPayloadQueue(option),
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option: option,
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cancel: signal.NewCloseSignal(),
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}
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@ -112,7 +116,7 @@ func ListenUDP(address v2net.Address, port v2net.Port, option ListenOption) (*UD
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return hub, nil
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}
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func (v *UDPHub) Close() {
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func (v *Hub) Close() {
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v.Lock()
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defer v.Unlock()
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@ -122,14 +126,14 @@ func (v *UDPHub) Close() {
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v.queue.Close()
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}
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func (v *UDPHub) WriteTo(payload []byte, dest v2net.Destination) (int, error) {
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func (v *Hub) WriteTo(payload []byte, dest v2net.Destination) (int, error) {
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return v.conn.WriteToUDP(payload, &net.UDPAddr{
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IP: dest.Address.IP(),
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Port: int(dest.Port),
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})
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}
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func (v *UDPHub) start() {
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func (v *Hub) start() {
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v.cancel.WaitThread()
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defer v.cancel.FinishThread()
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@ -156,23 +160,23 @@ func (v *UDPHub) start() {
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if v.option.ReceiveOriginalDest && noob > 0 {
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session.Destination = RetrieveOriginalDest(oobBytes[:noob])
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}
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v.queue.Enqueue(UDPPayload{
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v.queue.Enqueue(Payload{
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payload: buffer,
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session: session,
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})
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}
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}
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func (v *UDPHub) Running() bool {
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func (v *Hub) Running() bool {
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return !v.cancel.Cancelled()
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}
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// Connection return the net.Conn underneath v hub.
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// Connection return the net.Conn underneath this hub.
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// Private: Visible for testing only
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func (v *UDPHub) Connection() net.Conn {
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func (v *Hub) Connection() net.Conn {
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return v.conn
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}
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func (v *UDPHub) Addr() net.Addr {
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func (v *Hub) Addr() net.Addr {
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return v.conn.LocalAddr()
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}
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