/// <summary>
/// Internal UDP creation method that performs the necessary tasks
/// </summary>
/// <param name="connectionInfo"></param>
/// <param name="defaultSendReceiveOptions"></param>
/// <param name="level"></param>
/// <param name="listenForReturnPackets"></param>
/// <param name="existingConnection"></param>
/// <returns></returns>
internal static UDPConnection GetConnection(ConnectionInfo connectionInfo, SendReceiveOptions defaultSendReceiveOptions, UDPOptions level, bool listenForReturnPackets, UDPConnection existingConnection)
{
connectionInfo.ConnectionType = ConnectionType.UDP;
UDPConnection connection = null;
lock (NetworkComms.globalDictAndDelegateLocker)
{
if (NetworkComms.ConnectionExists(connectionInfo.RemoteEndPoint, ConnectionType.UDP))
{
connection = (UDPConnection)NetworkComms.GetExistingConnection(connectionInfo.RemoteEndPoint, ConnectionType.UDP);
}
else
{
//If we are listening on what will be the outgoing adaptor we send with that client to ensure if our connection info is handed off we are connectable by others
if (existingConnection == null)
{
try
{
IPEndPoint localEndPoint = NetworkComms.BestLocalEndPoint(connectionInfo.RemoteEndPoint);
lock (udpClientListenerLocker)
{
IPEndPoint existingLocalEndPoint = ExistingLocalListenEndPoints(localEndPoint.Address);
if (existingLocalEndPoint != null)
{
existingConnection = udpConnectionListeners[existingLocalEndPoint];
//If we are using an existing listener there is no need to listen for packets
listenForReturnPackets = false;
}
}
}
catch (Exception)
{
if (NetworkComms.LoggingEnabled)
{
NetworkComms.Logger.Trace("Failed to determine preferred existing udpClientListener to " + connectionInfo.RemoteEndPoint.Address + ":" + connectionInfo.RemoteEndPoint.Port.ToString() + ". Will create an isolated udp connection instead.");
}
}
}
//If an existing connection does not exist but the info we are using suggests it should we need to reset the info
//so that it can be reused correctly. This case generally happens when using Comms in the format
//UDPConnection.GetConnection(info).SendObject(packetType, objToSend);
if (connectionInfo.ConnectionState == ConnectionState.Established || connectionInfo.ConnectionState == ConnectionState.Shutdown)
{
connectionInfo.ResetConnectionInfo();
}
connection = new UDPConnection(connectionInfo, defaultSendReceiveOptions, level, listenForReturnPackets, existingConnection);
}
}
if (!NetworkComms.commsShutdown)
{
TriggerConnectionKeepAliveThread();
}
return(connection);
}
internal static TCPConnection GetConnection(ConnectionInfo connectionInfo, SendReceiveOptions defaultSendReceiveOptions, TcpClient tcpClient, bool establishIfRequired = true)
#endif
{
connectionInfo.ConnectionType = ConnectionType.TCP;
//If we have a tcpClient at this stage we must be serverside
#if WINDOWS_PHONE
if (socket != null)
{
connectionInfo.ServerSide = true;
}
#else
if (tcpClient != null)
{
connectionInfo.ServerSide = true;
}
#endif
bool newConnection = false;
TCPConnection connection;
lock (NetworkComms.globalDictAndDelegateLocker)
{
//Check to see if a conneciton already exists, if it does return that connection, if not return a new one
if (NetworkComms.ConnectionExists(connectionInfo.RemoteEndPoint, connectionInfo.ConnectionType))
{
if (NetworkComms.LoggingEnabled)
{
NetworkComms.Logger.Trace("Attempted to create new TCPConnection to connectionInfo='" + connectionInfo + "' but there is an existing connection. Existing connection will be returned instead.");
}
establishIfRequired = false;
connection = (TCPConnection)NetworkComms.GetExistingConnection(connectionInfo.RemoteEndPoint, connectionInfo.ConnectionType);
}
else
{
if (NetworkComms.LoggingEnabled)
{
NetworkComms.Logger.Trace("Creating new TCPConnection to connectionInfo='" + connectionInfo + "'." + (establishIfRequired ? " Connection will be established." : " Connection will not be established."));
}
if (connectionInfo.ConnectionState == ConnectionState.Establishing)
{
throw new ConnectionSetupException("Connection state for connection " + connectionInfo + " is marked as establishing. This should only be the case here due to a bug.");
}
//If an existing connection does not exist but the info we are using suggests it should we need to reset the info
//so that it can be reused correctly. This case generally happens when using Comms in the format
//TCPConnection.GetConnection(info).SendObject(packetType, objToSend);
if (connectionInfo.ConnectionState == ConnectionState.Established || connectionInfo.ConnectionState == ConnectionState.Shutdown)
{
connectionInfo.ResetConnectionInfo();
}
//We add a reference to networkComms for this connection within the constructor
#if WINDOWS_PHONE
connection = new TCPConnection(connectionInfo, defaultSendReceiveOptions, socket);
#else
connection = new TCPConnection(connectionInfo, defaultSendReceiveOptions, tcpClient);
#endif
newConnection = true;
}
}
if (newConnection && establishIfRequired)
{
connection.EstablishConnection();
}
else if (!newConnection)
{
connection.WaitForConnectionEstablish(NetworkComms.ConnectionEstablishTimeoutMS);
}
if (!NetworkComms.commsShutdown)
{
TriggerConnectionKeepAliveThread();
}
return(connection);
}
