/// <summary>
/// creates a ack. this is to be sent by the testclient UA
/// </summary>
/// <param name="invite"></param>
/// <param name="ringing"></param>
/// <returns></returns>
protected SipRequest CreateAckRequest(SipRequest invite, SipResponse ringing)
{
var addressFactory = new SipAddressFactory();
var headerFactory = new SipHeaderFactory();
var messageFactory = new SipMessageFactory();
var localSequenceNr = invite.CSeq.Sequence;
/*_remoteSequenceNr remains empty */
var callId = invite.CallId.Value;
var localTag = invite.From.Tag;
var remoteUri = invite.To.SipUri;
var localUri = invite.From.SipUri;
var remoteTag = ringing.To.Tag;
var remoteTarget = ringing.Contacts.GetTopMost().SipUri;
var routeSet = ringing.RecordRoutes.ToList();//refuse looseroutin-less recordroutes
routeSet.Reverse();
var cseqHeader = headerFactory.CreateSCeqHeader(SipMethods.Ack, localSequenceNr);
var toAddress = addressFactory.CreateAddress(null, remoteUri);
var toHeader = headerFactory.CreateToHeader(toAddress, remoteTag);
var fromAddress = addressFactory.CreateAddress(null, localUri);
var fromHeader = headerFactory.CreateFromHeader(fromAddress, localTag);
var callIdheader = headerFactory.CreateCallIdHeader(callId);
var viaHeader = invite.Vias.GetTopMost();
var requestUri = remoteUri.Clone();
var maxForwardsHeader = headerFactory.CreateMaxForwardsHeader();
var request = messageFactory.CreateRequest(
requestUri,
SipMethods.Ack,
callIdheader,
cseqHeader,
fromHeader,
toHeader,
viaHeader,
maxForwardsHeader);
foreach (var route in routeSet)
{
request.Routes.Add(new SipRouteHeader() { SipUri = route.SipUri, Parameters = route.Parameters });
}
return request;
}
protected SipRequest CreateCancelRequest(SipRequest request)
{
var hf = new SipHeaderFactory();
var mf = new SipMessageFactory();
var requestUri = request.RequestLine.Uri.Clone();
var callIdheader = (SipCallIdHeader)request.CallId.Clone();
var cseqHeader = new SipHeaderFactory().CreateSCeqHeader(SipMethods.Cancel, request.CSeq.Sequence);
var fromHeader = (SipFromHeader)request.From.Clone();
var toHeader = (SipToHeader)request.To.Clone();
var viaHeader = (SipViaHeader)request.Vias.GetTopMost().Clone();
var maxForwardsHeader = hf.CreateMaxForwardsHeader();
var cancelRequest = mf.CreateRequest(
requestUri,
SipMethods.Cancel,
callIdheader,
cseqHeader,
fromHeader,
toHeader,
viaHeader,
maxForwardsHeader);
foreach (var route in request.Routes)
{
cancelRequest.Routes.Add((SipRouteHeader)route.Clone());
}
return cancelRequest;
}