|
public abstract Send ( |
||
| destinationEndPoint | ||
| buffer | byte | |
| return | void | |
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 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);
}
}
}
