func (this *VMessOutboundHandler) Dispatch(target v2net.Destination, payload *alloc.Buffer, ray ray.OutboundRay) error {
defer ray.OutboundInput().Release()
defer ray.OutboundOutput().Close()
var rec *Receiver
var conn internet.Connection
err := retry.Timed(5, 100).On(func() error {
rec = this.receiverManager.PickReceiver()
rawConn, err := internet.Dial(this.meta.Address, rec.Destination, this.meta.StreamSettings)
if err != nil {
return err
}
conn = rawConn
return nil
})
if err != nil {
log.Error("VMess|Outbound: Failed to find an available destination:", err)
return err
}
log.Info("VMess|Outbound: Tunneling request to ", target, " via ", rec.Destination)
command := protocol.RequestCommandTCP
if target.IsUDP() {
command = protocol.RequestCommandUDP
}
request := &protocol.RequestHeader{
Version: raw.Version,
User: rec.PickUser(),
Command: command,
Address: target.Address(),
Port: target.Port(),
Option: protocol.RequestOptionChunkStream,
}
defer conn.Close()
conn.SetReusable(true)
if conn.Reusable() { // Conn reuse may be disabled on transportation layer
request.Option.Set(protocol.RequestOptionConnectionReuse)
}
input := ray.OutboundInput()
output := ray.OutboundOutput()
var requestFinish, responseFinish sync.Mutex
requestFinish.Lock()
responseFinish.Lock()
session := raw.NewClientSession(protocol.DefaultIDHash)
go this.handleRequest(session, conn, request, payload, input, &requestFinish)
go this.handleResponse(session, conn, request, rec.Destination, output, &responseFinish)
requestFinish.Lock()
responseFinish.Lock()
return nil
}
func (this *VMessOutboundHandler) startCommunicate(request *proto.RequestHeader, dest v2net.Destination, ray ray.OutboundRay, firstPacket v2net.Packet) error {
var destIP net.IP
if dest.Address().IsIPv4() || dest.Address().IsIPv6() {
destIP = dest.Address().IP()
} else {
ips, err := net.LookupIP(dest.Address().Domain())
if err != nil {
return err
}
destIP = ips[0]
}
conn, err := net.DialTCP("tcp", nil, &net.TCPAddr{
IP: destIP,
Port: int(dest.Port()),
})
if err != nil {
log.Error("Failed to open ", dest, ": ", err)
if ray != nil {
close(ray.OutboundOutput())
}
return err
}
log.Info("VMessOut: Tunneling request to ", request.Address, " via ", dest)
defer conn.Close()
input := ray.OutboundInput()
output := ray.OutboundOutput()
var requestFinish, responseFinish sync.Mutex
requestFinish.Lock()
responseFinish.Lock()
session := raw.NewClientSession(proto.DefaultIDHash)
go this.handleRequest(session, conn, request, firstPacket, input, &requestFinish)
go this.handleResponse(session, conn, request, dest, output, &responseFinish)
requestFinish.Lock()
conn.CloseWrite()
responseFinish.Lock()
return nil
}