public override void Received(IUDTPacket packet, Destination peer)
{
lastPacket = packet;
if (packet is ConnectionHandshake)
{
ConnectionHandshake hs = (ConnectionHandshake)packet;
FlashLogger.Info("Received connection handshake from " + peer + "\n" + hs);
if (State != ready)
{
if (hs.ConnectionType == 1)
{
try {
//TODO validate parameters sent by peer
// long peerSocketID = hs.SocketID;
// DestinationID = peerSocketID;
// destination(peerSocketID);
destination.SocketID = hs.SocketID;
SendConfirmation(hs);
} catch (Exception ex) {
FlashLogger.Warn("Error creating socket", ex);
State = invalid;
}
return;
}
else
{
try {
//TODO validate parameters sent by peer
//理论上这里是getConnectionType==-1
// long peerSocketID = hs.getSocketID();
// destination.SetSocketID(peerSocketID);
// setState(ready);
destination.SocketID = hs.SocketID;
State = ready;
Thread.Sleep(50);
//多个握手序列，使用接收的第一个
this.initialSequenceNumber = hs.InitialSeqNo;//cd 必须重置
socket = new UDTSocket(endPoint, this);
} catch (Exception ex) {
FlashLogger.Warn("Error creating socket", ex);
State = invalid;
}
return;
}
}
}
if (State == ready)
{
if (packet is Shutdown)
{
State = shutdown;
active = false;
FlashLogger.Info("Connection shutdown initiated by the other side.");
return;
}
active = true;
try {
if (packet.ForSender())
{
socket.GetSender().Receive(lastPacket);
}
else
{
socket.GetReceiver().Receive(lastPacket);
}
} catch (Exception ex) {
//session is invalid
FlashLogger.Error("Error in " + toString(), ex);
//setState(invalid);
State = invalid;
}
return;
}
}
public override void Received(IUDTPacket packet, Destination peer)
{
lastPacket = packet;
if (packet is ConnectionHandshake)
{
ConnectionHandshake connectionHandshake = (ConnectionHandshake)packet;
FlashLogger.Info("Received " + connectionHandshake);
if (State <= ready)
{
destination.SocketID = connectionHandshake.SocketID;
if (State <= handshaking)
{
State = handshaking;
}
try {
HandleHandShake(connectionHandshake);
n_handshake++;
try {
//理论上应该先检验cookie
State = ready;
socket = new UDTSocket(endPoint, this);
cc.Init();
} catch (Exception uhe) {
//session is invalid
FlashLogger.Error("", uhe);
State = invalid;
}
} catch (IOException ex) {
//session invalid
FlashLogger.Warn("Error processing ConnectionHandshake", ex);
State = invalid;
}
return;
}
else
{
//cd 回复
try {
HandleHandShake(connectionHandshake);
} catch (IOException e) {
}
}
}
else if (packet is KeepAlive)
{
socket.GetReceiver().ResetEXPTimer();
active = true;
return;
}
if (State == ready)
{
active = true;
if (packet is KeepAlive)
{
//nothing to do here
return;
}
else if (packet is Shutdown)
{
try {
socket.GetReceiver().Stop();
} catch (IOException ex) {
FlashLogger.Warn("", ex);
}
State = shutdown;
Console.WriteLine("SHUTDOWN ***");
active = false;
FlashLogger.Info("Connection shutdown initiated by the other side.");
return;
}
else
{
try {
Console.WriteLine("收到数据包");
if (packet.ForSender())
{
socket.GetSender().Receive(packet);
}
else
{
socket.GetReceiver().Receive(packet);
}
} catch (Exception ex) {
//session invalid
FlashLogger.Error("", ex);
State = invalid;
// setState(invalid);
}
}
return;
}
}