/// <summary>
/// Used to establish a TCP session with a remote host (connection information is sent to the remote host).
/// Transmits the local receiver port to the remote host.
/// </summary>
/// <param name="remoteIpAddress"></param>
/// <param name="remoteHandshakePort"></param>
/// <param name="localSessionData"></param>
public void TransmitSessionInitialization(string remoteIpAddress, int remoteHandshakePort, string remoteHostname, MessageContent.SessionInitMessageContent localSessionData)
{
if (!_initialized)
{
_evtRaiser.RaiseEvent("SessionError", "Cannot transmit session initialization to [" + remoteIpAddress + "]: TcpSessionManager has not been initialized"
, Niawa.Utilities.InlineSortedListCreator.CreateStrStr("SessionInitMessageContent", localSessionData.ToJson())
, _t2_SRL_ThreadStatus.NodeID
, _t2_SRL_ThreadStatus.ParentNodeID);
throw new Exception("[" + _description + "-M] Cannot transmit session initialization to [" + remoteIpAddress + "]: TcpSessionManager has not been initialized.");
}
logger.Info("[" + _description + "-M] Transmitting session initialization [" + remoteIpAddress + "]");
//attempt lock
bool tryLock = lockSection.WaitOne(60000);
if (!tryLock) throw new TimeoutException("[" + _description + "-M] Could not obtain lock while transmitting session initialization");
try
{
/*session was already created and receiver is listening*/
//make sure the session exists
if (!_tcpSessions.ContainsKey(remoteIpAddress))
{
_evtRaiser.RaiseEvent("SessionError", "Cannot transmit session initialization: Cannot find session for address [" + remoteIpAddress + "]"
, Niawa.Utilities.InlineSortedListCreator.CreateStrStr("SessionInitMessageContent", localSessionData.ToJson())
, _t2_SRL_ThreadStatus.NodeID
, _t2_SRL_ThreadStatus.ParentNodeID);
throw new Exception("[" + _description + "-M] Cannot transmit session initialization: Cannot find session for address [" + remoteIpAddress + "]");
}
/*transmit message on stand-alone TCP transmitter to remoteIPAddress and remotePort*/
//create transmitter and start transmitting
TcpTransmitter transmitter = new TcpTransmitter(remoteIpAddress, remoteHandshakePort, _evtConsumer, _utilsBus, _applicationName + ".TcpSessionManager", _t1_HR_ThreadStatus.NodeID);
transmitter.StartTransmitting(_applicationName + ".TcpSessionManager.TransmitSessionInitialization");
//create and send message
NiawaNetMessage message = new NiawaNetMessage(_ipAddress, _handshakePort, _hostname, remoteIpAddress, remoteHandshakePort, remoteHostname, Guid.NewGuid(), _applicationName, MessageContent.SessionInitMessageContent.MESSAGE_CONTENT_TYPE, localSessionData.ToJson());
//send message synchrnously
transmitter.SendMessageSynchronous(message, 30000);
//mark as init sent
TcpSession session = _tcpSessions[remoteIpAddress];
session.IsSessionInitSent = true;
//shut down transmitter
transmitter.StopTransmitting(_applicationName + ".TcpSessionManager.TransmitSessionInitialization", false);
transmitter.Dispose();
/*
//wait up to 30 seconds for transmitter to start
int i1 = 0;
while (!transmitter.IsThreadActive && i1 < 3000)
{
i1++;
System.Threading.Thread.Sleep(10);
}
//send message
transmitter.SendMessage(message);
//mark as init sent
TcpSession session = _tcpSessions[remoteIpAddress];
session.IsSessionInitSent = true;
//wait up to 30 seconds for message to send
int i = 0;
while (transmitter.CountMessagesInBuffer() > 0 && i < 3000)
{
i++;
System.Threading.Thread.Sleep(10);
}
//shut down transmitter
transmitter.StopTransmitting(_applicationName + ".TcpSessionManager.TransmitSessionInitialization", false);
//wait up to 30 seconds for transmitter thread to stop
int i2 = 0;
while (!transmitter.IsStopped && i2 < 3000)
{
i2++;
System.Threading.Thread.Sleep(10);
}
transmitter.Dispose();
*/
logger.Info("[" + _description + "-M] Session initialization sent to remote [" + remoteIpAddress + "]");
//raise event
_evtRaiser.RaiseEvent("Session", "Session initialization sent to remote [" + remoteIpAddress + "]"
, Niawa.Utilities.InlineSortedListCreator.CreateStrStr("SessionInitMessageContent", localSessionData.ToJson())
, _t2_SRL_ThreadStatus.NodeID
, _t2_SRL_ThreadStatus.ParentNodeID);
}
catch (Exception ex)
{
logger.Error("[" + _description + "-M] Error while transmitting session initialization [" + remoteIpAddress + "]:" + ex.Message, ex);
_evtRaiser.RaiseEvent("Error", "Error while transmitting session initialization [" + remoteIpAddress + "]:" + ex.Message, null, _t2_SRL_ThreadStatus.NodeID, _t2_SRL_ThreadStatus.ParentNodeID);
throw ex;
}
finally
{
//release lock
lockSection.Release();
}
}
/// <summary>
/// Add a transmitter to the Tcp session. A transmitter will be created with the remote session port supplied.
/// </summary>
/// <param name="remoteSessionPort"></param>
public void AddTransmitter(int remoteSessionPort)
{
try
{
if (_transmitter != null) throw new Exception("[" + _sessionIdentifier + "] Cannot add transmitter; transmitter was already added to the session");
_remoteSessionPort = remoteSessionPort;
_transmitter = new TcpTransmitter(_remoteIpAddress, _remoteSessionPort, _evtConsumer, _utilsBus, _applicationName + ".TcpSession", _threadStatus.NodeID);
}
catch (Exception ex)
{
logger.Error("[" + _sessionIdentifier + "] Error adding transmitter: " + ex.Message, ex);
throw ex;
}
}
