public void SendResponse(SipResponse response)
{
Check.Require(response, "response");
var result = new SipValidator().ValidateMessage(response);
if (!result.IsValid)
{
ThrowSipException(result);
}
var sendToEndPoint = SipProvider.DetermineSendTo(response);
var bytes = SipFormatter.FormatMessage(response);
SendBytes(bytes, sendToEndPoint);
if (_logger.IsDebugEnabled)
{
_logger.Debug("Send response '{0}' --> {1}. # bytes:{2}.", response.StatusLine.StatusCode, sendToEndPoint, bytes.Length);
}
if (_responseSentObserver != null)
{
_responseSentObserver.OnNext(response);
}
}
private void SendErrorResponse(Exception exception, SipRequestEvent requestEvent)
{
Check.Require(exception, "exception");
Check.Require(requestEvent, "requestEvent");
Check.Require(requestEvent.Request, "requestEvent.Request");
var request = requestEvent.Request;
var sipException = exception as SipException;
string responseCode = sipException != null ? sipException.ResponseCode : SipResponseCodes.x500_Server_Internal_Error;
SipResponse response = sipException != null?_stack.CreateMessageFactory().CreateResponse(request, responseCode) :
_stack.CreateMessageFactory().CreateResponse(request, responseCode + ", " + exception.Message);
if (requestEvent.ServerTransaction != null)
{
requestEvent.ServerTransaction.SendResponse(response);
}
else if (response.Vias.GetTopMost() != null)
{
IPEndPoint ipEndPoint = SipProvider.DetermineSendTo(response);
try
{
_contextSource.SendTo(SipFormatter.FormatMessage(response), ipEndPoint);
if (_responseSentObserver != null)
{
_responseSentObserver.OnNext(response);
}
}
catch (SocketException err)
{
_logger.Error("Failed to send response to " + ipEndPoint.ToString(), err);
}
}
else
{
_logger.Warn("Response can not be sent. Via TopMost header missing.");
}
}
private void OnIncomingRequestContext(SipContext context)
{
if (_requestReceivedObserver != null)
{
_requestReceivedObserver.OnNext(context.Request);
}
if (_logger.IsDebugEnabled)
{
_logger.Debug("Validating the request...");
}
var result = new SipValidator().ValidateMessage(context.Request);
if (!result.IsValid)
{
if (_logger.IsDebugEnabled)
{
_logger.Debug("The received request is not valid. Throwing a sip exception.");
}
ThrowSipException(result);
}
if (_logger.IsDebugEnabled)
{
_logger.Debug("Request valid.");
}
/*firewall traversal not supported. SupportFirewalTraversal(context);*/
var requestEvent = new SipRequestEvent(context);
ISipRequestProcessor sipRequestProcessor = _sipListener;
//8.2.2.2: merged requests, not implemented
SipAbstractServerTransaction stx;
if (_logger.IsDebugEnabled)
{
_logger.Debug("Searching the table for a matching tx..");
}
if (_stxTable.TryGetValue(GetServerTransactionId(context.Request), out stx))
{
if (_logger.IsTraceEnabled)
{
_logger.Trace("Found a matching tx. Setting it as the requestprocessor.");
}
sipRequestProcessor = stx;
//if (IsDialogInitiatingRequest(stx.Request))
//{
//if (_logger.IsDebugEnabled) _logger.Debug("The received request is an 'INVITE' request. Try setting the dialog on tx...");
//set the dialog, so it can initiate
SipAbstractDialog found;
if (TryGetDialogOnTx(context.Request, out found))
{
requestEvent.Dialog = found;
}
//}
}
else
{
if (_logger.IsDebugEnabled)
{
_logger.Debug("Could not find a matching tx..");
}
if (_logger.IsDebugEnabled)
{
_logger.Debug("Searching the table for a matching dialog...");
}
SipAbstractDialog dialog;
if (_dialogTable.TryGetValue(GetDialogId(context.Request, true), out dialog))
{
if (_logger.IsTraceEnabled)
{
_logger.Trace("Found a matching dialog. Setting it as the requestprocessor.");
}
sipRequestProcessor = dialog;
requestEvent.Dialog = dialog;
}
else
{
if (_logger.IsTraceEnabled)
{
_logger.Trace("Could not find a matching dialog. Using the SipProvider's SipListener as the requestprocessor.");
}
}
}
try
{
sipRequestProcessor.ProcessRequest(requestEvent);
if (requestEvent.IsSent)
{
if (_logger.IsDebugEnabled)
{
_logger.Debug("Processed '{0}' request. The response has already been sent. Skipping automatic response sending.", requestEvent.Request.RequestLine.Method);
}
return;
}
if (!ShouldHaveResponse(requestEvent.Request))
{
if (_logger.IsDebugEnabled)
{
_logger.Debug("Processed '{0}' request. The request does not require a response. Skipping automatic response sending.", requestEvent.Request.RequestLine.Method);
}
return;
}
if (requestEvent.Response == null)
{
throw new SipCoreException("Response to send can not be null. The ProcessRequest method is supposed to create a response message that is to be sent.");
}
if (!requestEvent.IsSent)
{
var response = requestEvent.Response;
var remoteEndPoint = SipProvider.DetermineSendTo(response);
_contextSource.SendTo(SipFormatter.FormatMessage(response), remoteEndPoint);
if (_responseSentObserver != null)
{
_responseSentObserver.OnNext(response);
}
}
}
catch (SipCoreException coreException)
{
throw coreException;
}
catch (SipException sipException)
{
if (ShouldHaveResponse(requestEvent.Request))
{
SendErrorResponse(sipException, requestEvent);
}
}
catch (Exception err)
{
_logger.ErrorException("Request failed.", err);
try
{
if (ShouldHaveResponse(requestEvent.Request))
{
SendErrorResponse(err, requestEvent);
}
}
catch (Exception errr)
{
_logger.Debug("Failed to send the response.", errr);
}
}
}