public UDTSocket Accept()
{
try
{
if (!started)
{
this.endpoint.start(true);//启动监听
this.started = true;
}
while (!shutdown)
{
UDTSession session = endpoint.accept();
if (session != null)
{
//等待握手完成
while (!session.isReady() || session.getSocket() == null)
{
Thread.Sleep(100);
}
return(session.getSocket());
}
Thread.Sleep(400);
}
return(null);
}
catch (Exception exc)
{
Log.Write(this.ToString(), "listens and blocks until a new client connects and returns a valid {@link UDTSocket} for the new connection", exc);
return(null);
}
}
/// <summary>
/// create a receiver with a valid {@link UDTSession}
/// </summary>
/// <param name="session"></param>
/// <param name="endpoint"></param>
public UDTReceiver(UDTSession session, UDPEndPoint endpoint)
{
this.roundTripTimeVar = roundTripTime / 2;
this.endpoint = endpoint;
this.session = session;
//( System.DateTime.UtcNow.Ticks - new DateTime(1970, 1, 1, 0, 0, 0).Ticks)/10000;
//如果要得到Java中 System.currentTimeMillis() 一样的结果，就可以写成 上面那样，也可以这样写：
// TimeSpan ts=new TimeSpan( System.DateTime.UtcNow.Ticks - new DateTime(1970, 1, 1, 0, 0, 0).Ticks);
//(long)ts.TotalMilliseconds;
this.sessionUpSince = (long)ts.TotalMilliseconds;
this.statistics = session.getStatistics();
if (!session.isReady())
{
Log.Write(this.ToString(), "UDTSession is not ready.");
}
ackHistoryWindow = new AckHistoryWindow(16);
packetHistoryWindow = new PacketHistoryWindow(16);
receiverLossList = new ReceiverLossList();
packetPairWindow = new PacketPairWindow(16);
largestReceivedSeqNumber = (int)session.getInitialSequenceNumber() - 1;
bufferSize = session.getReceiveBufferSize();
handoffQueue = new Queue <UDTPacket>(4 * session.getFlowWindowSize());
storeStatistics = false; //Boolean.getBoolean("udt.receiver.storeStatistics");
initMetrics();
start();
}
public UDTSender(UDTSession session, UDPEndPoint endpoint)
{
if (!session.isReady())
{
Log.Write(this.ToString(), "UDTSession is not ready.");
}
this.endpoint = endpoint;
this.session = session;
statistics = session.getStatistics();
senderLossList = new SenderLossList();
sendBuffer = new Dictionary <long, DataPacket>(session.getFlowWindowSize());
sendQueue = new Queue <DataPacket>(1000);
lastAckSequenceNumber = (int)session.getInitialSequenceNumber();
currentSequenceNumber = (int)session.getInitialSequenceNumber() - 1;
waitForAckLatch.Set(new CountDownLatch(1));
waitForSeqAckLatch.Set(new CountDownLatch(1));
storeStatistics = false; //Boolean.getBoolean("udt.sender.storeStatistics");
initMetrics();
doStart();
}