public void Transact(TransactionFunc transactionFunc)
{
bool initialCall = false;
if (transaction == null)
{
initialCall = true;
transaction = new Transaction(this);
transactionCleanups.Add(transaction);
}
try
{
transactionFunc(transaction);
}
finally
{
if (initialCall && transactionCleanups[0] == transaction)
{
CleanupTransactions();
}
}
}
void updateTransaction()
{
var lMessage = transaction.continueTransaction();
if (lMessage != null || transaction.overTime)
{
transactionFunc = transactionFunc(lMessage);
}
}
/// <summary>
/// Gets NAT info from STUN server.
/// </summary>
/// <param name="host">STUN server name or IP.</param>
/// <param name="port">STUN server port. Default port is 3478.</param>
/// <param name="socket">UDP socket to use.</param>
/// <returns>Returns UDP netwrok info.</returns>
/// <exception cref="Exception">Throws exception if unexpected error happens.</exception>
public void Query(string host, int port, Socket socket)
{
if (host == null)
{
throw new System.ArgumentNullException("host");
}
if (socket == null)
{
throw new System.ArgumentNullException("socket");
}
if (port < 1)
{
throw new System.ArgumentNullException("Port value must be >= 1 !");
}
if (socket.ProtocolType != ProtocolType.Udp)
{
throw new System.ArgumentNullException("Socket must be UDP socket !");
}
IPEndPoint remoteEndPoint = new IPEndPoint(System.Net.Dns.GetHostAddresses(host)[0], port);
socket.ReceiveTimeout = 3000;
socket.SendTimeout = 3000;
// Test I
STUN_Message test1 = new STUN_Message();
test1.Type = STUN_MessageType.BindingRequest;
transaction.doTransaction(test1, socket, remoteEndPoint);
transactionFunc = test1ResponeFunc;
timer.enabled = true;
}
TransactionFunc transactionRespone(STUN_Message pRequest,TransactionFunc pFunc )
{
transaction.doTransaction(pRequest);
return pFunc;
}
