static public async Task <UDPClientStream> ConnectAsync(UDPClientListener udp, string ip, int port, TimeSpan timeout)
{
var s = new UDPClientStream();
s._server = new IPEndPoint(IPAddress.Parse(ip), port);
Exception error = null;
CancellationTokenSource cts = new CancellationTokenSource();
RunInNewThread(delegate
{
try
{
s._Connect(udp, ip, port, timeout);
}
catch (Exception x)
{
error = x;
}
cts.Cancel();
});
await cts.Token.WaitForSignalSettedAsync(-1);
if (error != null)
{
throw new Exception(error.Message, error);
}
return(s);
}
void _Connect(UDPClientListener udp, string ip, int port, TimeSpan timeout)
{
_udp = udp;
StartConnect:
SessionId = Interlocked.Increment(ref _nextsessionid);
string guid = Guid.NewGuid().ToString();
byte[] buffconnect = UDPMeta.CreateSessionConnect(SessionId, guid);
SendToPeer(buffconnect); SendToPeer(buffconnect);
while (true)
{
byte[] buffprepair = _udp.Receive(SessionId, TimeSpan.FromMilliseconds(500));
if (buffprepair == null)
{
CheckTimeout(timeout);
Console.WriteLine("Client StartConnect Again");
//SendToPeer(buffconnect); SendToPeer(buffconnect);
//continue;
goto StartConnect;
}
UDPPackageType ptprepair = UDPMeta.GetPackageType(buffprepair);
if (ptprepair != UDPPackageType.SessionPrepair)
{
if (ptprepair > UDPPackageType.SessionPrepair)
{
goto StartConnect;
}
continue;
}
long sidprepair = BitConverter.ToInt64(buffprepair, 8);
if (sidprepair != SessionId)
{
goto StartConnect;
}
UDPConnectJson udpc = UDPConnectJson.Deserialize(Encoding.UTF8.GetString(buffprepair, 16, buffprepair.Length - 16));
if (udpc.token != guid)
{
goto StartConnect;
}
break;
}
byte[] buffconfirm = UDPMeta.CreateSessionConfirm(SessionId, guid);
SendToPeer(buffconfirm); SendToPeer(buffconfirm);
while (true)
{
byte[] buffready = _udp.Receive(SessionId, TimeSpan.FromMilliseconds(500));
if (buffready == null)
{
CheckTimeout(timeout);
SendToPeer(buffconfirm); SendToPeer(buffconfirm);
continue;
}
UDPPackageType ptprepair = UDPMeta.GetPackageType(buffready);
if (ptprepair != UDPPackageType.SessionReady)
{
if (ptprepair > UDPPackageType.SessionReady)
{
goto StartConnect;
}
continue;
}
long sidprepair = BitConverter.ToInt64(buffready, 8);
if (sidprepair != SessionId)
{
goto StartConnect;
}
UDPConnectJson udpc = UDPConnectJson.Deserialize(Encoding.UTF8.GetString(buffready, 16, buffready.Length - 16));
if (udpc.token != guid)
{
goto StartConnect;
}
break;
}
_reader = new ClientBufferReader();
Thread t = new Thread(ClientWorkThread); //TODO:Convert to async
t.IsBackground = true;
t.Start();
}