mirror of https://github.com/v2fly/v2ray-core.git
61 lines
1.7 KiB
Go
61 lines
1.7 KiB
Go
package udp
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/v2fly/v2ray-core/v5/common/buf"
|
|
"github.com/v2fly/v2ray-core/v5/common/net"
|
|
"github.com/v2fly/v2ray-core/v5/common/net/packetaddr"
|
|
"github.com/v2fly/v2ray-core/v5/common/protocol/udp"
|
|
"github.com/v2fly/v2ray-core/v5/features/routing"
|
|
)
|
|
|
|
type PacketAddrDispatcher struct {
|
|
conn net.PacketConn
|
|
callback ResponseCallback
|
|
ctx context.Context
|
|
}
|
|
|
|
func (p PacketAddrDispatcher) Close() error {
|
|
if p.ctx.Value(DispatcherConnectionTerminationSignalReceiverMark) != nil {
|
|
p.ctx.Value(DispatcherConnectionTerminationSignalReceiverMark).(DispatcherConnectionTerminationSignalReceiver).Close()
|
|
}
|
|
return p.conn.Close()
|
|
}
|
|
|
|
func (p PacketAddrDispatcher) Dispatch(ctx context.Context, destination net.Destination, payload *buf.Buffer) {
|
|
if destination.Network != net.Network_UDP {
|
|
return
|
|
}
|
|
p.conn.WriteTo(payload.Bytes(), &net.UDPAddr{IP: destination.Address.IP(), Port: int(destination.Port.Value())})
|
|
}
|
|
|
|
func (p PacketAddrDispatcher) readWorker() {
|
|
for {
|
|
readBuf := buf.New()
|
|
n, addr, err := p.conn.ReadFrom(readBuf.Extend(2048))
|
|
if err != nil {
|
|
return
|
|
}
|
|
readBuf.Resize(0, int32(n))
|
|
p.callback(p.ctx, &udp.Packet{Payload: readBuf, Source: net.DestinationFromAddr(addr)})
|
|
}
|
|
}
|
|
|
|
type PacketAddrDispatcherCreator struct {
|
|
ctx context.Context
|
|
}
|
|
|
|
func NewPacketAddrDispatcherCreator(ctx context.Context) PacketAddrDispatcherCreator {
|
|
return PacketAddrDispatcherCreator{ctx: ctx}
|
|
}
|
|
|
|
func (pdc *PacketAddrDispatcherCreator) NewPacketAddrDispatcher(
|
|
dispatcher routing.Dispatcher, callback ResponseCallback,
|
|
) DispatcherI {
|
|
packetConn, _ := packetaddr.CreatePacketAddrConn(pdc.ctx, dispatcher, false)
|
|
pd := &PacketAddrDispatcher{conn: packetConn, callback: callback, ctx: pdc.ctx}
|
|
go pd.readWorker()
|
|
return pd
|
|
}
|