/// <summary>
/// Transmits the UDP ping or ping reply message configured for this instance of NiawaAdHocNetworkAdapter.
/// </summary>
/// <param name="isReplyMessage">True if ping reply message; False if ping message</param>
public void TransmitPingMessage(bool isReplyMessage, string replySerialID)
{
try
{
if(!isReplyMessage )
{
logger.Info("[" + _description + "-M] Transmitting ping message");
//send message
_evtRaiser.RaiseEvent("Message", "Transmitting ping message", null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageCount += 1;
/*broadcast UDP ping when requested by implementor*/
if (!_started) throw new Exception("[" + _description + "-M] Could not transmit ping message: NiawaAdHocNetworkAdapter is not started");
if (_tcpHandshakePort == 0) throw new Exception("[" + _description + "-M] Could not transmit ping message: HandshakePort [" + _tcpHandshakePort + "] is not valid.");
//create message
MessageContent.PingMessageContent pingMessage = new MessageContent.PingMessageContent(_ipAddress, _hostname, string.Empty);
NiawaNetDatagram message = new NiawaNetDatagram(_ipAddress, _udpPort, Guid.NewGuid(), _hostname, _applicationName, MessageContent.PingMessageContent.MESSAGE_CONTENT_TYPE_PING, pingMessage.ToJson());
//send message
_udpTransmitter.SendMessage(message);
}
else
{
logger.Info("[" + _description + "-M] Transmitting ping reply message");
//send message
_evtRaiser.RaiseEvent("Message", "Transmitting ping reply message", null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageCount += 1;
/*broadcast UDP ping reply when requested by implementor*/
if (!_started) throw new Exception("[" + _description + "-M] Could not transmit ping reply message: NiawaAdHocNetworkAdapter is not started");
if (_tcpHandshakePort == 0) throw new Exception("[" + _description + "-M] Could not transmit ping reply message: HandshakePort [" + _tcpHandshakePort + "] is not valid.");
//create message
MessageContent.PingMessageContent pingMessage = new MessageContent.PingMessageContent(_ipAddress, _hostname, replySerialID);
NiawaNetDatagram message = new NiawaNetDatagram(_ipAddress, _udpPort, Guid.NewGuid(), _hostname, _applicationName, MessageContent.PingMessageContent.MESSAGE_CONTENT_TYPE_PINGREPLY, pingMessage.ToJson());
//send message
_udpTransmitter.SendMessage(message);
}
}
catch (Exception ex)
{
logger.Error("[" + _description + "-M] Error while transmitting ping/ping reply message: " + ex.Message, ex);
throw ex;
}
}
/// <summary>
/// Raises event with current status
/// </summary>
/// <returns></returns>
/*public string RaiseStatusReport()
{
try
{
if (_started)
{
_evtRaiser.RaiseEvent("StatusReport", "Started", string.Empty);
return "Started";
}
else
{
_evtRaiser.RaiseEvent("StatusReport", "Stopped", string.Empty);
return "Stopped";
}
}
catch (Exception ex)
{
logger.ErrorException("[" + _description + "-M] Error while raising status report: " + ex.Message, ex);
throw ex;
}
}
*/
/// <summary>
/// Raises an event with thread health information passed in by the caller. This function is utilized in the ThreadHealthMonitor object.
/// </summary>
/// <param name="description"></param>
/// <param name="threadHealthValue"></param>
/// <param name="healthFailed"></param>
/*public void RaiseThreadHealth(string description, double threadHealthValue, bool healthFailed)
{
try
{
_evtRaiser.RaiseEvent("ThreadHealth", "Description:" + description + ";TheadHealth:" + threadHealthValue.ToString("F") + ";HealthFailed:" + healthFailed.ToString(), string.Empty);
}
catch (Exception ex)
{
logger.ErrorException("[" + _description + "-M] Error while raising thread health: " + ex.Message, ex);
throw ex;
}
}
*/
/// <summary>
/// Transmits the UDP handshake message configured for this instance of NiawaAdHocNetworkAdapter.
/// </summary>
public void TransmitHandshakeMessage()
{
try
{
logger.Info("[" + _description + "-M] Transmitting handshake message");
//send message
_evtRaiser.RaiseEvent("Message", "Transmitting handshake message", null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageCount += 1;
/*broadcast UDP handshake when requested by implementor*/
if (!_started) throw new Exception("[" + _description + "-M] Could not transmit handshake message: NiawaAdHocNetworkAdapter is not started");
if (_tcpHandshakePort == 0) throw new Exception("[" + _description + "-M] Could not transmit handshake message: HandshakePort [" + _tcpHandshakePort + "] is not valid.");
//create message
MessageContent.HandshakeMessageContent handshakeMessage = new MessageContent.HandshakeMessageContent(_ipAddress, _hostname, _tcpHandshakePort);
//handshakeMessage.IpAddress = _ipAddress;
//handshakeMessage.Hostname = _hostname;
//handshakeMessage.HandshakePort = _tcpHandshakePort;
NiawaNetDatagram message = new NiawaNetDatagram(_ipAddress, _udpPort, Guid.NewGuid(), _hostname, _applicationName, MessageContent.HandshakeMessageContent.MESSAGE_CONTENT_TYPE, handshakeMessage.ToJson());
//send message
_udpTransmitter.SendMessage(message);
}
catch (Exception ex)
{
logger.Error("[" + _description + "-M] Error while transmitting handshake message: " + ex.Message, ex);
throw ex;
}
}
//public UdpTransmitter(int port, Niawa.MsEventController.EventConsumer evtConsumer, Niawa.Utilities.UtilsServiceBus utilsBus, string applicationNameDetailed, Niawa.Utilities.SerialId parentThreadId)
//{
// try
// {
// _applicationNameDetailed = applicationNameDetailed;
// _port = port;
// _evtConsumer = evtConsumer;
// _sendQueue = new Queue<NiawaNetDatagram>();
// lockSection = new System.Threading.Semaphore(1, 1);
// _description = "UdpTransmitter " + _port.ToString();
// //initialize the endpoints
// _groupEndpoint = new System.Net.IPEndPoint(System.Net.IPAddress.Broadcast, _port);
// _localEP = new System.Net.IPEndPoint(System.Net.IPAddress.Loopback, _port);
// //initialize serial ID generator
// id = utilsBus.InitializeSerialId(Niawa.Utilities.IdGeneratorUtils.ID_ROOT_NIAWA_NET_DATAGRAM);
// //initialize event logging
// _evtRaiser = new MsEventController.EventRaiser("UdpTransmitter", _applicationNameDetailed, _description, utilsBus);
// if (_evtConsumer != null) _evtRaiser.AddEventConsumer(_evtConsumer);
// _threadStatus = new Niawa.Threading.ThreadStatus(_description, 60, utilsBus.InitializeSerialId(Niawa.Utilities.IdGeneratorUtils.ID_ROOT_NIAWA_THREAD_ID), parentThreadId, _evtRaiser);
// //thread status
// _threadStatus.Status = Niawa.Threading.ThreadStatus.STATUS_INITIALIZED;
// //add thread elective properties.
// _threadStatus.AddElectiveProperty("Port", _port.ToString());
// }
// catch (Exception ex)
// {
// logger.Error("[UdpTransmitter-M] Error while instantiating: " + ex.Message, ex);
// throw ex;
// }
//}
/// <summary>
/// Send UDP message.
/// </summary>
/// <param name="message">Message to send via UDP.</param>
public void SendMessage(NiawaNetDatagram message)
{
try
{
if (!_threadStatus.IsThreadEnabled || !_threadStatus.IsThreadActive)
{
_evtRaiser.RaiseEvent("MessageError", "Cannot send message - Transmitter is not active"
, Niawa.Utilities.InlineSortedListCreator.CreateStrStr("NiawaNetMessage", message.ToJson())
, _threadStatus.NodeID
, _threadStatus.ParentNodeID);
throw new MessageNotSentException("Cannot send message - transmitter is not active");
}
//get next serial ID
id = Niawa.Utilities.IdGeneratorUtils.IncrementSerialId(id);
message.SerialID = id.ToString();
logger.Info("[" + _description + "-M] Queueing message: Type [" + message.MessageType + "] SerialID [" + message.SerialID + "]");
_sendQueue.Enqueue(message);
}
catch (Exception ex)
{
logger.Error("[" + _description + "-M] Error while sending message: " + ex.Message, ex);
throw ex;
}
}
/// <summary>
/// Transmit message via UDP.
/// </summary>
/// <param name="message">Message to send via UDP.</param>
/// <returns></returns>
private bool TransmitMessage(NiawaNetDatagram message)
{
bool succeeded = false;
//attempt lock
bool tryLock = lockSection.WaitOne(60000);
if (!tryLock) throw new TimeoutException("[" + _description + "-T] Could not obtain lock while sending message");
try
{
Byte[] messageBytes = message.ToByteArray();
//send message
/*v1*/
//_netUdpClient.Connect(_groupEndpoint);
//_netUdpClient.Send(messageBytes, messageBytes.Length, _localEP);
//_netUdpClient.Close();
//_netUdpClient = null;
//messageInProgressGuid = string.Empty;
/*v2*/
//_netUdpClient.Send(messageBytes, messageBytes.Length, _localEP);
/*v3*/
if (messageBytes.Length > 65000)
{
//message is too long
throw new InvalidOperationException("UdpTransmitter cannot send a message with length greater than 65000 bytes.");
}
else
{
bool tryLock2 = lockSentMessageGuidBuffer.WaitOne(5000);
if (tryLock2 == false) throw new TimeoutException("Could not obtain lock on Sent Message GUID Buffer while sending message.");
try
{
//add guid to sent buffer
_sentMessageGuidBuffer.Add(message.Guid);
if (_sentMessageGuidBuffer.Count > 1000) _sentMessageGuidBuffer.RemoveAt(0);
}
finally
{
lockSentMessageGuidBuffer.Release();
}
//send
_netUdpClient.Send(messageBytes, messageBytes.Length);
}
succeeded = true;
}
catch (Exception ex)
{
logger.Error("[" + _description + "-M] Error while transmitting message: " + ex.Message, ex);
throw ex;
}
finally
{
//release lock
lockSection.Release();
}
logger.Info("[" + _description + "-T] Message sent: Type [" + message.MessageType + "] SerialID [" + message.SerialID + "] Guid [" + message.Guid.ToString() + "]");
_evtRaiser.RaiseEvent("Message", "Message sent [" + message.SerialID + "]"
, Niawa.Utilities.InlineSortedListCreator.CreateStrStr("NiawaNetMessage", message.ToJson())
, _threadStatus.NodeID
, _threadStatus.ParentNodeID);
_threadStatus.MessageCount += 1;
return succeeded;
}
/// <summary>
/// Loop thread that reads UDP messages and adds items to the receive queue.
/// </summary>
/// <param name="data"></param>
private void ListenThreadImpl(object data)
{
_threadStatus.IsThreadActive = true;
logger.Info("[" + _description + "-T] Receiver active");
bool suspendedStateDetectChange = false;
try
{
while (_threadStatus.IsThreadEnabled)
{
_threadStatus.ThreadHealthDate = DateTime.Now;
//listening
if (suspendedStateDetectChange != _threadSuspended)
{
suspendedStateDetectChange = _threadSuspended;
if (_threadSuspended == true) { logger.Info("[" + _description + "-T] Receiver suspended"); }
if (_threadSuspended == false) { logger.Info("[" + _description + "-T] Receiver resumed"); }
}
if (_threadSuspended)
{
//suspended
//logger.Debug("[" + _description + "] Receiver suspended");
System.Threading.Thread.Sleep(10);
}
else
{
//not suspended
bool receivingMessage = false;
try
{
logger.Info("[" + _description + "-T] Waiting for network data");
//get datagram
/*v2*/
//Byte[] recvBytes = _netUdpClient.Receive(ref _recvEndpoint);
/*v3*/
Byte[] recvBytes = new Byte[65000];
int ix = _netUdpClient.Receive(recvBytes);
Array.Resize<Byte>(ref recvBytes, ix);
logger.Info("[" + _description + "-T] Received network data");
receivingMessage = true;
NiawaNetDatagram message;
//get message contents
message = new NiawaNetDatagram(recvBytes);
//check if message should be ignored
if (_ignoreTransmittedUdpMessages && _udpTransmitter != null && _udpTransmitter.SentMessageGuidBufferContainsGuid(message.Guid))
{
//ignore message
logger.Info("[" + _description + "-T] Ignoring message sent by associated UdpTransmitter: Type [" + message.MessageType + "] SerialID [" + message.SerialID + "]");
}
else
{
//don't ignore message
//attempt lock
bool tryLock = lockSection.WaitOne(60000);
if (!tryLock) throw new TimeoutException("[" + _description + "-T] Could not obtain lock while receiving message");
try
{
//add message to queue
_receiveQueue.Enqueue(message);
}
finally
{
//release lock
lockSection.Release();
}
//raise event
_threadStatus.MessageCount += 1;
logger.Info("[" + _description + "-T] Received message: Type [" + message.MessageType + "] SerialID [" + message.SerialID + "]");
_evtRaiser.RaiseEvent("Message", "Received message [" + message.SerialID + "]"
, Niawa.Utilities.InlineSortedListCreator.CreateStrStr("NiawaNetMessage", message.ToJson())
, _threadStatus.NodeID
, _threadStatus.ParentNodeID);
}
receivingMessage = false;
}
catch (System.Threading.ThreadAbortException) // ex1)
{
//thread was aborted
if (receivingMessage == true)
{
logger.Error("[" + _description + "-T] Could not receive message: Thread aborted");
_evtRaiser.RaiseEvent("MessageError", "Cannot receive message - Thread aborted", null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageErrorCount += 1;
}
else
{ logger.Debug("[" + _description + "-T] Thread aborted"); }
break;
}
catch (System.Threading.ThreadInterruptedException) // ex1)
{
//thread was interrupted
if (receivingMessage == true)
{
logger.Error("[" + _description + "-T] Could not receive message: Thread interrupted");
_evtRaiser.RaiseEvent("MessageError", "Cannot receive message - Thread interrupted", null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageErrorCount += 1;
}
else
{ logger.Debug("[" + _description + "-T] Thread interrupted"); }
break;
}
catch (System.Net.Sockets.SocketException ex2)
{
//socket exception
if (ex2.Message.Contains("A blocking operation was interrupted by a call to WSACancelBlockingCall"))
{
if (receivingMessage == true)
{
logger.Error("[" + _description + "-T] Could not receive message: Blocking operation interrupted");
_evtRaiser.RaiseEvent("MessageError", "Cannot receive message - Blocking operation interrupted", null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageErrorCount += 1;
}
else
{ logger.Debug("[" + _description + "-T] Blocking operation interrupted"); }
}
else
{
if (receivingMessage == true)
{
logger.Error("[" + _description + "-T] Could not receive message: Socket error [" + ex2.Message + "]", ex2);
_evtRaiser.RaiseEvent("MessageError", "Cannot receive message - Socket error while receiving message: " + ex2.Message, null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageErrorCount += 1;
}
else
{ logger.Debug("[" + _description + "-T] Socket error [" + ex2.Message + "]"); }
}
}
catch (Exception ex)
{
//exception
if (receivingMessage == true)
{
logger.Error("[" + _description + "-T] Could not receive message: Error [" + ex.Message + "]", ex);
_evtRaiser.RaiseEvent("Error", "Cannot receive message - Error while receiving message: " + ex.Message, null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.ErrorCount += 1;
_evtRaiser.RaiseEvent("MessageError", "Cannot receive message - Error while receiving message: " + ex.Message, null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.MessageErrorCount += 1;
}
else
{ logger.Warn("[" + _description + "-T] Error while receiving messages [" + ex.Message + "]"); }
System.Threading.Thread.Sleep(100);
}
System.Threading.Thread.Sleep(10);
}
}
//done with ListenThread (stopped)
}
catch (Exception ex)
{
logger.Error("[" + _description + "-T] Error in listen thread: " + ex.Message, ex);
_evtRaiser.RaiseEvent("Error", "[" + _description + "-T] Error in listen thread: " + ex.Message, null, _threadStatus.NodeID, _threadStatus.ParentNodeID);
_threadStatus.ErrorCount += 1;
throw ex;
}
finally
{
_threadStatus.IsThreadActive = false;
_threadSuspended = false;
_threadStatus.IsThreadEnabled = false;
logger.Info("[" + _description + "-T] Receiver inactive");
}
}
