/**
* handle the connection handshake:<br/>
* <ul>
* <li>set initial sequence number</li>
* <li>send response handshake</li>
* </ul>
* @param handshake
* @param peer
* @throws IOException
*/
protected void HandleHandShake(ConnectionHandshake handshake)
{
ConnectionHandshake responseHandshake = new ConnectionHandshake();
//compare the packet size and choose minimun
long clientBufferSize = handshake.PacketSize;
long myBufferSize = datagramSize;
long bufferSize = Math.Min(clientBufferSize, myBufferSize);
long initialSequenceNumber = handshake.InitialSeqNo;
this.initialSequenceNumber = initialSequenceNumber;
this.DatagramSize = (int)bufferSize;
// setDatagramSize((int) bufferSize);
responseHandshake.PacketSize = bufferSize;
responseHandshake.UdtVersion = 4;
responseHandshake.InitialSeqNo = initialSequenceNumber;
responseHandshake.ConnectionType = -1;
responseHandshake.MaxFlowWndSize = handshake.MaxFlowWndSize;
//tell peer what the socket ID on this side is
responseHandshake.SocketID = mySocketID;
responseHandshake.DestinationID = this.destination.SocketID;
//cd 2018-08-28
if (this.cookie == 0)
{
this.cookie = CreateCookie();
}
responseHandshake.Cookie = cookie;
responseHandshake.SetSession(this);
FlashLogger.Info("Sending reply " + responseHandshake);
endPoint.DoSend(responseHandshake);
}
//2nd handshake for connect
protected void SendConfirmation(ConnectionHandshake hs)
{
ConnectionHandshake handshake = new ConnectionHandshake();
handshake.ConnectionType = -1;
handshake.SocketID = ConnectionHandshake.SOCKET_TYPE_DGRAM;
handshake.InitialSeqNo = hs.InitialSeqNo;
handshake.PacketSize = hs.PacketSize;
handshake.SocketID = mySocketID;
handshake.MaxFlowWndSize = flowWindowSize;
//cd 2018-08-28
handshake.Cookie = hs.Cookie;
handshake.PeerIP = hs.PeerIP;
//
handshake.SetSession(this);
FlashLogger.Info("Sending confirmation " + handshake);
endPoint.DoSend(handshake);
}
//handshake for connect
protected void SendHandShake()
{
ConnectionHandshake handshake = new ConnectionHandshake();
handshake.ConnectionType = ConnectionHandshake.CONNECTION_TYPE_REGULAR;
handshake.SocketType = ConnectionHandshake.SOCKET_TYPE_DGRAM;
long initialSequenceNo = SequenceNumber.Random();
initialSequenceNumber = initialSequenceNo;
handshake.InitialSeqNo = initialSequenceNo;
handshake.PacketSize = datagramSize;
handshake.SocketID = mySocketID;
handshake.MaxFlowWndSize = flowWindowSize;
//cd 2018-08-28
handshake.SetPeerIP(this.endPoint.GetLocalAddress().Address.ToString());
handshake.SetSession(this);
FlashLogger.Info("Sending " + handshake);
endPoint.DoSend(handshake);
connectNum++;
}