private Task <SocketError> OnAckAnswerReceived(SIPEndPoint localSIPEndPoint, SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPRequest sipRequest)
{
SIPDialogue = new SIPDialogue(m_uasTransaction);
SIPDialogue.TransferMode = m_transferMode;
OnDialogueCreated?.Invoke(SIPDialogue);
return(Task.FromResult(SocketError.Success));
}
public SIPDialogue Answer(string contentType, string body, string toTag, SIPDialogueTransferModesEnum transferMode, string[] customHeaders)
{
try
{
m_transferMode = transferMode;
if (m_uasTransaction.TransactionFinalResponse != null)
{
logger.LogDebug("UAS Answer was called on an already answered call, ignoring.");
return(null);
}
else
{
//UASStateChanged?.Invoke(this, SIPResponseStatusCodesEnum.Ok, null);
if (!toTag.IsNullOrBlank())
{
m_uasTransaction.LocalTag = toTag;
}
SIPResponse okResponse = m_uasTransaction.GetOkResponse(contentType, body);
if (body != null)
{
okResponse.Header.ContentType = contentType;
okResponse.Header.ContentLength = body.Length;
okResponse.Body = body;
}
if (customHeaders != null && customHeaders.Length > 0)
{
foreach (string header in customHeaders)
{
okResponse.Header.UnknownHeaders.Add(header);
}
}
if (OfferSDP == null)
{
// The INVITE request did not contain an SDP offer. We need to send the offer in the response and
// then get the answer from the ACK.
m_uasTransaction.OnAckReceived += OnAckAnswerReceived;
}
m_uasTransaction.SendFinalResponse(okResponse);
if (OfferSDP != null)
{
SIPDialogue = new SIPDialogue(m_uasTransaction);
SIPDialogue.TransferMode = transferMode;
OnDialogueCreated?.Invoke(SIPDialogue);
return(SIPDialogue);
}
else
{
// The dialogue cannot be created until the ACK is received.
return(null);
}
}
}
catch (Exception excp)
{
logger.LogError("Exception SIPServerUserAgent Answer. " + excp.Message);
throw;
}
}
