/// <include file='InterfaceDocumentationComments.xml' path='doc/members/member[@name="M:MethodInvocationRemoting.IRemoteReceiver.Receive"]/*'/>
public string Receive()
{
CheckNotDisposed();
string returnMessage = "";
cancelRequest = false;
try
{
while (cancelRequest == false)
{
if (fileSystem.CheckFileExists(messageFilePath) == true)
{
if (fileSystem.CheckFileExists(lockFilePath) == false)
{
metricsUtilities.Begin(new MessageReceiveTime());
try
{
returnMessage = messageFile.ReadAll();
fileSystem.DeleteFile(messageFilePath);
}
catch (Exception e)
{
metricsUtilities.CancelBegin(new MessageReceiveTime());
throw;
}
metricsUtilities.End(new MessageReceiveTime());
metricsUtilities.Increment(new MessageReceived());
metricsUtilities.Add(new ReceivedMessageSize(returnMessage.Length));
loggingUtilities.LogMessageReceived(this, returnMessage);
break;
}
}
else
{
waitingForTimeout = true;
if (readLoopTimeout > 0)
{
System.Threading.Thread.Sleep(readLoopTimeout);
}
waitingForTimeout = false;
}
}
}
catch (Exception e)
{
throw new Exception("Error receiving message.", e);
}
return(returnMessage);
}
/// <include file='InterfaceDocumentationComments.xml' path='doc/members/member[@name="M:MethodInvocationRemoting.IRemoteReceiver.Receive"]/*'/>
public string Receive()
{
string returnMessage = "";
cancelRequest = false;
CheckNotDisposed();
CheckConnectionOpen();
try
{
IMessage receivedMessage;
while (cancelRequest == false)
{
waitingForMessage = true;
receivedMessage = consumer.Receive(new TimeSpan(0, 0, 0, 0, connectLoopTimeout));
waitingForMessage = false;
if (receivedMessage != null)
{
returnMessage = (string)receivedMessage.Properties.GetString("Text");
metricsUtilities.Increment(new MessageReceived());
metricsUtilities.Add(new ReceivedMessageSize(returnMessage.Length));
loggingUtilities.LogMessageReceived(this, returnMessage);
break;
}
}
}
catch (Exception e)
{
throw new Exception("Error receiving message.", e);
}
finally
{
waitingForMessage = false;
}
return(returnMessage);
}
/// <include file='InterfaceDocumentationComments.xml' path='doc/members/member[@name="M:MethodInvocationRemoting.IRemoteReceiver.Receive"]/*'/>
public string Receive()
{
cancelRequest = false;
CheckNotDisposed();
CheckConnected();
int messageSequenceNumber = -1;
string returnMessage = "";
while (cancelRequest == false)
{
// Check if there are any pending connections which would indicate the TcpRemoteSender has encountered an error and reconnected
if (listener.Pending() == true)
{
logger.Log(this, LogLevel.Warning, "New connection detected. Attempting reconnect.");
AttemptConnect();
metricsUtilities.Increment(new TcpRemoteReceiverReconnected());
}
// Check if any data has been received from the TcpRemoteSender, and handle and retry if an exception occurs
int availableData = 0;
try
{
availableData = client.Available;
}
catch (Exception e)
{
availableData = HandleExceptionAndCheckAvailableData(e);
}
// If data has been received, attempt to read and parse it, and handle and retry if an exception occurs
if (availableData != 0)
{
metricsUtilities.Begin(new MessageReceiveTime());
MessageParseState parseState = MessageParseState.StartOfMessage;
Queue <byte> messageBytes = null; // Holds the bytes which form the body of the message received
try
{
messageBytes = SetupAndReadMessage(ref parseState, ref messageSequenceNumber);
}
catch (Exception e)
{
messageBytes = HandleExceptionAndRereadMessage(e, ref parseState, ref messageSequenceNumber);
}
// If the complete message has been read, break out of the current while loop
// If the complete message was not read it would have been caused by a cancel request, or by a pending connection which is handled outside this block
if ((cancelRequest == false) && (parseState == MessageParseState.ReadCompleteMessage))
{
// If the sequence number of the message is the same as the last received message, then discard the message
// This situation can be caused by the connection breaking before the sender received the last acknowledgment
if (messageSequenceNumber != lastMessageSequenceNumber)
{
lastMessageSequenceNumber = messageSequenceNumber;
returnMessage = stringEncoding.GetString(messageBytes.ToArray());
metricsUtilities.End(new MessageReceiveTime());
metricsUtilities.Increment(new MessageReceived());
metricsUtilities.Add(new ReceivedMessageSize(returnMessage.Length));
loggingUtilities.LogMessageReceived(this, returnMessage);
break;
}
else
{
metricsUtilities.Increment(new TcpRemoteReceiverDuplicateSequenceNumber());
logger.Log(this, LogLevel.Warning, "Duplicate message with sequence number " + messageSequenceNumber + " received. Message discarded.");
// Reset variables
messageSequenceNumber = -1;
returnMessage = "";
}
}
metricsUtilities.End(new MessageReceiveTime());
}
waitingForRetry = true;
if (receiveRetryInterval > 0)
{
Thread.Sleep(receiveRetryInterval);
}
waitingForRetry = false;
}
return(returnMessage);
}