public IncomingMessage(SIPChannel sipChannel, SIPEndPoint remoteEndPoint, byte[] buffer)
{
LocalSIPChannel = sipChannel;
RemoteEndPoint = remoteEndPoint;
Buffer = buffer;
ReceivedAt = DateTime.Now;
}
public SIPConnection(SIPChannel channel, Socket sipSocket, IPEndPoint remoteEndPoint, SIPProtocolsEnum connectionProtocol, SIPConnectionsEnum connectionType)
{
LastTransmission = DateTime.Now;
m_owningChannel = channel;
SIPSocket = sipSocket;
RemoteEndPoint = remoteEndPoint;
ConnectionProtocol = connectionProtocol;
ConnectionType = connectionType;
}
/// <summary>
/// Adds an additional SIP Channel to the transport layer.
/// </summary>
/// <param name="localEndPoint"></param>
public void AddSIPChannel(SIPChannel sipChannel)
{
try
{
m_sipChannels.Add(sipChannel.SIPChannelEndPoint.ToString(), sipChannel);
// Wire up the SIP transport to the SIP channel.
sipChannel.SIPMessageReceived += ReceiveMessage;
if (m_queueIncoming && !m_transportThreadStarted)
{
StartTransportThread();
}
}
catch (Exception excp)
{
logger.Error("Exception AddSIPChannel. " + excp.Message);
throw excp;
}
}
public SIPTransport(ResolveSIPEndPointDelegate sipResolver, SIPTransactionEngine transactionEngine, SIPChannel sipChannel, bool queueIncoming)
{
if (sipResolver == null)
{
throw new ArgumentNullException("The SIP end point resolver must be set when creating a SIPTransport object.");
}
ResolveSIPEndPoint_External = sipResolver;
m_transactionEngine = transactionEngine;
AddSIPChannel(sipChannel);
m_queueIncoming = queueIncoming;
}
private void SIPMessageReceived(SIPChannel sipChannel, SIPEndPoint remoteEndPoint, byte[] buffer)
{
string rawSIPMessage = null;
try
{
if (buffer != null && buffer.Length > 0)
{
if ((buffer[0] == 0x0 || buffer[0] == 0x1) && buffer.Length >= 20)
{
// Treat any messages that cannot be SIP as STUN requests.
if (STUNRequestReceived != null)
{
STUNRequestReceived(sipChannel.SIPChannelEndPoint.GetIPEndPoint(), remoteEndPoint.GetIPEndPoint(), buffer, buffer.Length);
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_STUN_REQUESTS_PER_SECOND_SUFFIX);
}
#endif
}
}
else
{
// Treat all messages that don't match STUN requests as SIP.
if (buffer.Length > SIPConstants.SIP_MAXIMUM_RECEIVE_LENGTH)
{
string rawErrorMessage = Encoding.UTF8.GetString(buffer, 0, 1024) + "\r\n..truncated";
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "SIP message too large, " + buffer.Length + " bytes, maximum allowed is " + SIPConstants.SIP_MAXIMUM_RECEIVE_LENGTH + " bytes.", SIPValidationFieldsEnum.Request, rawErrorMessage);
SIPResponse tooLargeResponse = GetResponse(sipChannel.SIPChannelEndPoint, remoteEndPoint, SIPResponseStatusCodesEnum.MessageTooLarge, null);
SendResponse(tooLargeResponse);
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_SIP_BAD_MESSAGES_PER_SECOND_SUFFIX);
}
#endif
}
else
{
rawSIPMessage = Encoding.UTF8.GetString(buffer, 0, buffer.Length);
if (rawSIPMessage.IsNullOrBlank())
{
// An emptry transmission has been received. More than likely this is a NAT keep alive and can be disregarded.
//FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "No printable characters, length " + buffer.Length + " bytes.", SIPValidationFieldsEnum.Unknown, null);
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
// SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_SIP_BAD_MESSAGES_PER_SECOND_SUFFIX);
}
#endif
return;
}
else if (!rawSIPMessage.Contains("SIP"))
{
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "Missing SIP string.", SIPValidationFieldsEnum.NoSIPString, rawSIPMessage);
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_SIP_BAD_MESSAGES_PER_SECOND_SUFFIX);
}
#endif
return;
}
SIPMessage sipMessage = SIPMessage.ParseSIPMessage(rawSIPMessage, sipChannel.SIPChannelEndPoint, remoteEndPoint);
if (sipMessage != null)
{
if (sipMessage.SIPMessageType == SIPMessageTypesEnum.Response)
{
#region SIP Response.
try
{
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_SIP_RESPONSES_PER_SECOND_SUFFIX);
}
#endif
SIPResponse sipResponse = SIPResponse.ParseSIPResponse(sipMessage);
if (SIPResponseInTraceEvent != null)
{
FireSIPResponseInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipResponse);
}
if (m_transactionEngine != null && m_transactionEngine.Exists(sipResponse))
{
SIPTransaction transaction = m_transactionEngine.GetTransaction(sipResponse);
if (transaction.TransactionState != SIPTransactionStatesEnum.Completed)
{
transaction.DeliveryPending = false;
if (m_reliableTransmissions.ContainsKey(transaction.TransactionId))
{
lock (m_reliableTransmissions)
{
m_reliableTransmissions.Remove(transaction.TransactionId);
}
}
}
transaction.GotResponse(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipResponse);
}
else if (SIPTransportResponseReceived != null)
{
SIPTransportResponseReceived(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipResponse);
}
}
catch (SIPValidationException sipValidationException)
{
//logger.Warn("Invalid SIP response from " + sipMessage.ReceivedFrom + ", " + sipResponse.ValidationError + " , ignoring.");
//logger.Warn(sipMessage.RawMessage);
FireSIPBadResponseInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipMessage.RawMessage, sipValidationException.SIPErrorField, sipMessage.RawMessage);
}
#endregion
}
else
{
#region SIP Request.
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_SIP_REQUESTS_PER_SECOND_SUFFIX);
}
#endif
try
{
SIPRequest sipRequest = SIPRequest.ParseSIPRequest(sipMessage);
SIPValidationFieldsEnum sipRequestErrorField = SIPValidationFieldsEnum.Unknown;
string sipRequestValidationError = null;
if (!sipRequest.IsValid(out sipRequestErrorField, out sipRequestValidationError))
{
throw new SIPValidationException(sipRequestErrorField, sipRequestValidationError);
}
if (SIPRequestInTraceEvent != null)
{
FireSIPRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipRequest);
}
// Stateful cores will create transactions once they get the request and the transport layer will use those transactions.
// Stateless cores will not be affected by this step as the transaction layer will always return false.
SIPTransaction requestTransaction = (m_transactionEngine != null) ? m_transactionEngine.GetTransaction(sipRequest) : null;
if (requestTransaction != null)
{
if (requestTransaction.TransactionState == SIPTransactionStatesEnum.Completed && sipRequest.Method != SIPMethodsEnum.ACK)
{
logger.Warn("Resending final response for " + sipRequest.Method + ", " + sipRequest.URI.ToString() + ", cseq=" + sipRequest.Header.CSeq + ".");
requestTransaction.RetransmitFinalResponse();
}
else if (sipRequest.Method == SIPMethodsEnum.ACK)
{
//logger.Debug("ACK received for " + requestTransaction.TransactionRequest.URI.ToString() + ".");
if (requestTransaction.TransactionState == SIPTransactionStatesEnum.Completed)
{
//logger.Debug("ACK received for INVITE, setting state to Confirmed, " + sipRequest.URI.ToString() + " from " + sipRequest.Header.From.FromURI.User + " " + remoteEndPoint + ".");
//requestTransaction.UpdateTransactionState(SIPTransactionStatesEnum.Confirmed);
requestTransaction.ACKReceived(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipRequest);
}
else if (requestTransaction.TransactionState == SIPTransactionStatesEnum.Confirmed)
{
// ACK retransmit, ignore as a previous ACK was received and the transaction has already been confirmed.
}
else
{
//logger.Warn("ACK recieved from " + remoteEndPoint.ToString() + " on " + requestTransaction.TransactionState + " transaction, ignoring.");
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "ACK recieved on " + requestTransaction.TransactionState + " transaction, ignoring.", SIPValidationFieldsEnum.Request, null);
}
}
else
{
logger.Warn("Transaction already exists, ignoring duplicate request, " + sipRequest.Method + " " + sipRequest.URI.ToString() + ".");
//FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "Transaction already exists, ignoring duplicate request, " + sipRequest.Method + " " + sipRequest.URI.ToString() + " from " + remoteEndPoint + ".", SIPValidationFieldsEnum.Request);
}
}
else if (SIPTransportRequestReceived != null)
{
// This is a new SIP request and if the validity checks are passed it will be handed off to all subscribed new request listeners.
#region Check for invalid SIP requests.
if (sipRequest.Header.MaxForwards == 0 && sipRequest.Method != SIPMethodsEnum.OPTIONS)
{
// Check the MaxForwards value, if equal to 0 the request must be discarded. If MaxForwards is -1 it indicates the
// header was not present in the request and that the MaxForwards check should not be undertaken.
//logger.Warn("SIPTransport responding with TooManyHops due to 0 MaxForwards.");
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "Zero MaxForwards on " + sipRequest.Method + " " + sipRequest.URI.ToString() + " from " + sipRequest.Header.From.FromURI.User + " " + remoteEndPoint.ToString(), SIPValidationFieldsEnum.Request, sipRequest.ToString());
SIPResponse tooManyHops = GetResponse(sipRequest, SIPResponseStatusCodesEnum.TooManyHops, null);
SendResponse(sipChannel, tooManyHops);
return;
}
/*else if (sipRequest.IsLoop(sipChannel.SIPChannelEndPoint.SocketEndPoint.Address.ToString(), sipChannel.SIPChannelEndPoint.SocketEndPoint.Port, sipRequest.CreateBranchId()))
{
//logger.Warn("SIPTransport Dropping looped request.");
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "Dropping looped request, " + sipRequest.Method + " " + sipRequest.URI.ToString() + " from " + sipRequest.Header.From.FromURI.User + " " + IPSocket.GetSocketString(remoteEndPoint), SIPValidationFieldsEnum.Request);
SIPResponse loopResponse = GetResponse(sipRequest, SIPResponseStatusCodesEnum.LoopDetected, null);
SendResponse(loopResponse);
return;
}*/
#endregion
#region Route pre-processing.
if (sipRequest.Header.Routes.Length > 0)
{
PreProcessRouteInfo(sipRequest);
}
#endregion
// Request has passed validity checks, adjust the client Via header to reflect the socket the request was received on.
//SIPViaHeader originalTopViaHeader = sipRequest.Header.Via.TopViaHeader;
sipRequest.Header.Vias.UpateTopViaHeader(remoteEndPoint.GetIPEndPoint());
// Stateful cores should create a transaction once they receive this event, stateless cores should not.
SIPTransportRequestReceived(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipRequest);
}
}
catch (SIPValidationException sipRequestExcp)
{
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipRequestExcp.Message, sipRequestExcp.SIPErrorField, sipMessage.RawMessage);
SIPResponse errorResponse = GetResponse(sipChannel.SIPChannelEndPoint, remoteEndPoint, sipRequestExcp.SIPResponseErrorCode, sipRequestExcp.Message);
SendResponse(sipChannel, errorResponse);
}
#endregion
}
}
else
{
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "Not parseable as SIP message.", SIPValidationFieldsEnum.Unknown, rawSIPMessage);
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_SIP_BAD_MESSAGES_PER_SECOND_SUFFIX);
}
#endif
}
}
}
}
}
catch (Exception excp)
{
FireSIPBadRequestInTraceEvent(sipChannel.SIPChannelEndPoint, remoteEndPoint, "Exception SIPTransport. " + excp.Message, SIPValidationFieldsEnum.Unknown, rawSIPMessage);
#if !SILVERLIGHT
if (PerformanceMonitorPrefix != null)
{
SIPSorceryPerformanceMonitor.IncrementCounter(PerformanceMonitorPrefix + SIPSorceryPerformanceMonitor.SIP_TRANSPORT_SIP_BAD_MESSAGES_PER_SECOND_SUFFIX);
}
#endif
}
}
private void SendResponse(SIPChannel sipChannel, SIPEndPoint dstEndPoint, SIPResponse sipResponse)
{
try
{
if (dstEndPoint != null && dstEndPoint.Address.Equals(BlackholeAddress))
{
// Ignore packet, it's destined for the blackhole.
return;
}
if (m_sipChannels.Count == 0)
{
throw new ApplicationException("No channels are configured in the SIP transport layer. The response could not be sent.");
}
sipResponse.Header.ContentLength = (sipResponse.Body.NotNullOrBlank()) ? Encoding.UTF8.GetByteCount(sipResponse.Body) : 0;
sipChannel.Send(dstEndPoint.GetIPEndPoint(), Encoding.UTF8.GetBytes(sipResponse.ToString()));
if (SIPRequestOutTraceEvent != null)
{
FireSIPResponseOutTraceEvent(sipChannel.SIPChannelEndPoint, dstEndPoint, sipResponse);
}
}
catch (ApplicationException appExcp)
{
logger.Warn("ApplicationException SIPTransport SendResponse. " + appExcp.Message);
}
}
private void SendResponse(SIPChannel sipChannel, SIPResponse sipResponse)
{
if (m_sipChannels.Count == 0)
{
throw new ApplicationException("No channels are configured in the SIP transport layer. The response could not be sent.");
}
SIPViaHeader topVia = sipResponse.Header.Vias.TopViaHeader;
SIPDNSLookupResult lookupResult = GetHostEndPoint(topVia.ReceivedFromAddress, false);
if (lookupResult.LookupError != null)
{
throw new ApplicationException("Could not resolve destination for response.\n" + sipResponse.ToString());
}
else if (lookupResult.Pending)
{
// Ignore this response transmission and wait for the transaction retransmit mechanism to try again when DNS will have hopefully resolved the end point.
return;
}
else
{
SIPEndPoint dstEndPoint = lookupResult.GetSIPEndPoint();
if (dstEndPoint != null && dstEndPoint.Address.Equals(BlackholeAddress))
{
// Ignore packet, it's destined for the blackhole.
return;
}
else if (dstEndPoint != null)
{
SendResponse(sipChannel, new SIPEndPoint(topVia.Transport, dstEndPoint.GetIPEndPoint()), sipResponse);
}
else
{
throw new ApplicationException("SendResponse could not send a response as no end point was resolved.\n" + sipResponse.ToString());
}
}
}
private void SendRequest(SIPChannel sipChannel, SIPEndPoint dstEndPoint, SIPRequest sipRequest)
{
try
{
if (dstEndPoint != null && dstEndPoint.Address.Equals(BlackholeAddress))
{
// Ignore packet, it's destined for the blackhole.
return;
}
if (m_sipChannels.Count == 0)
{
throw new ApplicationException("No channels are configured in the SIP transport layer. The request could not be sent.");
}
sipRequest.Header.ContentLength = (sipRequest.Body.NotNullOrBlank()) ? Encoding.UTF8.GetByteCount(sipRequest.Body) : 0;
if (sipChannel.IsTLS)
{
sipChannel.Send(dstEndPoint.GetIPEndPoint(), Encoding.UTF8.GetBytes(sipRequest.ToString()), sipRequest.URI.Host);
}
else
{
sipChannel.Send(dstEndPoint.GetIPEndPoint(), Encoding.UTF8.GetBytes(sipRequest.ToString()));
}
if (SIPRequestOutTraceEvent != null)
{
FireSIPRequestOutTraceEvent(sipChannel.SIPChannelEndPoint, dstEndPoint, sipRequest);
}
}
catch (ApplicationException appExcp)
{
logger.Warn("ApplicationException SIPTransport SendRequest. " + appExcp.Message);
SIPResponse errorResponse = GetResponse(sipRequest, SIPResponseStatusCodesEnum.InternalServerError, appExcp.Message);
// Remove any Via headers, other than the last one, that are for sockets hosted by this process.
while (errorResponse.Header.Vias.Length > 0)
{
if (IsLocalSIPEndPoint(SIPEndPoint.ParseSIPEndPoint(errorResponse.Header.Vias.TopViaHeader.ReceivedFromAddress)))
{
errorResponse.Header.Vias.PopTopViaHeader();
}
else
{
break;
}
}
if (errorResponse.Header.Vias.Length == 0)
{
logger.Warn("Could not send error response for " + appExcp.Message + " as no non-local Via headers were available.");
}
else
{
SendResponse(errorResponse);
}
}
}
/// <summary>
/// Gets fired when a suspected SIP message is extracted from the TCP data stream.
/// </summary>
protected void SIPTCPMessageReceived(SIPChannel channel, SIPEndPoint localEndPoint, SIPEndPoint remoteEndPoint, byte[] buffer)
{
SIPMessageReceived?.Invoke(channel, localEndPoint, remoteEndPoint, buffer);
}
private void NatKeepAliveChannelMessageReceived(SIPChannel sipChannel, SIPEndPoint remoteEndPoint, byte[] buffer)
{
try
{
NATKeepAliveMessage keepAliveMessage = NATKeepAliveMessage.ParseNATKeepAliveMessage(buffer);
if (keepAliveMessage != null)
{
if (keepAliveMessage.LocalSIPEndPoint.Protocol == SIPProtocolsEnum.udp)
{
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.NATKeepAlive, SIPMonitorEventTypesEnum.NATKeepAliveRelay, "Relaying NAT keep-alive from proxy socket " + keepAliveMessage.LocalSIPEndPoint + " to " + keepAliveMessage.RemoteEndPoint + ".", null));
m_sipTransport.SendRaw(keepAliveMessage.LocalSIPEndPoint, new SIPEndPoint(keepAliveMessage.RemoteEndPoint), m_sendBuffer);
}
else
{
// For connection oriented protocols check whether a connection exists. NAT keep alives shouldn't cause a connection to be initiated.
SIPChannel sendFromChannel = m_sipTransport.FindSIPChannel(keepAliveMessage.LocalSIPEndPoint);
if (sendFromChannel != null && sendFromChannel.IsConnectionEstablished(keepAliveMessage.RemoteEndPoint))
{
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.NATKeepAlive, SIPMonitorEventTypesEnum.NATKeepAliveRelay, "Relaying NAT keep-alive from proxy socket " + keepAliveMessage.LocalSIPEndPoint + " to " + keepAliveMessage.RemoteEndPoint + ".", null));
m_sipTransport.SendRaw(keepAliveMessage.LocalSIPEndPoint, new SIPEndPoint(keepAliveMessage.RemoteEndPoint), m_sendBuffer);
}
else
{
FireSIPMonitorLogEvent(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.NATKeepAlive, SIPMonitorEventTypesEnum.NATKeepAliveRelay, "No established connection was found to relay NAT keep-alive from proxy socket " + keepAliveMessage.LocalSIPEndPoint + " to " + keepAliveMessage.RemoteEndPoint + ".", null));
}
}
}
}
catch (Exception excp)
{
logger.Error("Exception NatKeepAliveChannelMessageReceived. " + excp.Message);
}
}
private byte[] m_sendBuffer = new byte[] { 0x0, 0x0, 0x0, 0x0 }; // Doesn't matter what is sent since it's just to keep the NAT connection alive.
/// <param name="listenerSocket">Socket to listen for NAT keepalive relay requests on.</param>
public NATKeepAliveRelay(SIPTransport sipTransport, IPEndPoint listenerSocket, SIPMonitorLogDelegate sipMonitorLogDelegate)
{
m_sipTransport = sipTransport;
m_natKeepAliveChannel = new SIPUDPChannel(listenerSocket);
m_natKeepAliveChannel.SIPMessageReceived += NatKeepAliveChannelMessageReceived;
SIPMonitorLog_External = sipMonitorLogDelegate;
logger.Debug("NATKeepAlive Relay instantiated on " + listenerSocket + ".");
}
public void ReceiveMessage(SIPChannel sipChannel, SIPEndPoint remoteEndPoint, byte[] buffer)
{
try
{
if (!m_queueIncoming)
{
SIPMessageReceived(sipChannel, remoteEndPoint, buffer);
}
else
{
IncomingMessage incomingMessage = new IncomingMessage(sipChannel, remoteEndPoint, buffer);
m_inMessageQueue.TryAdd(incomingMessage);
}
}
catch (Exception excp)
{
logger.Error("Exception SIPTransport ReceiveMessage. " + excp.Message);
throw excp;
}
}
/// <summary>
/// Gets fired when a suspected SIP message is extracted from the TCP data stream.
/// </summary>
protected Task SIPTCPMessageReceived(SIPChannel channel, SIPEndPoint localEndPoint, SIPEndPoint remoteEndPoint, byte[] buffer)
{
return(SIPMessageReceived?.Invoke(channel, localEndPoint, remoteEndPoint, buffer));
}
private void SIPTCPMessageReceived(SIPChannel channel, SIPEndPoint remoteEndPoint, byte[] buffer)
{
if (m_connectionFailures.ContainsKey(remoteEndPoint.GetIPEndPoint().ToString()))
{
m_connectionFailures.Remove(remoteEndPoint.GetIPEndPoint().ToString());
}
if (m_connectionFailureStrikes.ContainsKey(remoteEndPoint.GetIPEndPoint().ToString()))
{
m_connectionFailureStrikes.Remove(remoteEndPoint.GetIPEndPoint().ToString());
}
if (SIPMessageReceived != null)
{
SIPMessageReceived(channel, remoteEndPoint, buffer);
}
}
public void ReceiveMessage(SIPChannel sipChannel, SIPEndPoint remoteEndPoint, byte[] buffer)
{
try
{
if (!m_queueIncoming)
{
SIPMessageReceived(sipChannel, remoteEndPoint, buffer);
}
else
{
IncomingMessage incomingMessage = new IncomingMessage(sipChannel, remoteEndPoint, buffer);
// Keep the queue within size limits
if (m_inMessageQueue.Count >= MAX_INMESSAGE_QUEUECOUNT)
{
logger.Warn("SIPTransport queue full new message from " + remoteEndPoint + " being discarded.");
}
else
{
lock (m_inMessageQueue)
{
m_inMessageQueue.Enqueue(incomingMessage);
}
}
m_inMessageArrived.Set();
}
}
catch (Exception excp)
{
logger.Error("Exception SIPTransport ReceiveMessage. " + excp.Message);
throw excp;
}
}
public void RemoveSIPChannel(SIPChannel sipChannel)
{
if (m_sipChannels.ContainsKey(sipChannel.SIPChannelEndPoint.ToString()))
{
m_sipChannels.Remove(sipChannel.SIPChannelEndPoint.ToString());
sipChannel.SIPMessageReceived -= ReceiveMessage;
}
}
private void SIPTLSMessageReceived(SIPChannel channel, SIPEndPoint remoteEndPoint, byte[] buffer)
{
if (SIPMessageReceived != null)
{
SIPMessageReceived(channel, remoteEndPoint, buffer);
}
}
