public void SetDialog(SipAbstractDialog dialog)
{
_dialog = dialog;
}
private bool TryGetDialogOnTx(SipRequest request, out SipAbstractDialog dialog)
{
dialog = null;
if (request.To.Tag == null) return false;
/* merged request: Based on the To tag, the UAS MAY either accept or reject the request.
* If the request has a tag in the To header field,
* but the dialog identifier does not match any existing dialogs*/
if(_logger.IsDebugEnabled)_logger.Debug("Searching the table for a matching dialog...");
SipAbstractDialog inTableDialog;
if (_dialogTable.TryGetValue(GetDialogId(request, true), out inTableDialog))
{
if (_logger.IsDebugEnabled) _logger.Debug("Found a matching dialog. Setting it on tx.");
dialog = inTableDialog;
return true;
}
else
{
if (_logger.IsDebugEnabled) _logger.Debug("Could not find a matching dialog.");
/* If the UAS wishes to reject the request because it does not wish to
recreate the dialog, it MUST respond to the request with a 481
(Call/Transaction Does Not Exist) status code and pass that to the
server transaction.
*/
return false;
}
}
private void SendRinging()
{
if (_ringingResponse == null)
{
_ringingResponse = _inviteRequest.CreateResponse(SipResponseCodes.x180_Ringing);
_ringingResponse.To.Tag = SipUtil.CreateTag();
var contactUri = AddressFactory.CreateUri("", MainForm.SipProvider.ListeningPoint.ToString());
_ringingResponse.Contacts.Add(HeaderFactory.CreateContactHeader(contactUri));
_inviteTransaction =
(SipInviteServerTransaction)SipProvider.CreateServerTransaction(_inviteRequest);
_dialog = SipProvider.CreateServerDialog(_inviteTransaction);
_inviteTransaction.SendResponse(_ringingResponse);
}
else
{
_inviteTransaction.SendResponse(_ringingResponse);
}
}
private void SendBye(SipAbstractDialog dialog)
{
var byeRequest = dialog.CreateRequest(SipMethods.Bye);
var ctx = SipProvider.CreateClientTransaction(byeRequest);
dialog.SendRequest(ctx);
}
private void RefreshDialogForm(SipAbstractDialog dialog)
{
if (dialog == null) return;
if (dialog.State != DialogState.Null)
{
_txtCallId.Text = dialog.CallId;
_txtLocalTag.Text = dialog.LocalTag;
_txtRemoteTag.Text = dialog.RemoteTag;
_txtLocalSeqNr.Text = dialog.LocalSequenceNr.ToString();
_txtRemoteSeqNr.Text = dialog.RemoteSequenceNr.ToString();
_txtLocalUri.Text = dialog.LocalUri.FormatToString();
_txtRemoteUri.Text = dialog.RemoteUri.FormatToString();
_txtRemoteTarget.Text = dialog.RemoteTarget.FormatToString();
StringBuilder sb = new StringBuilder();
dialog.RouteSet.ForEach(r => sb.AppendLine(r.FormatBodyToString()));
_txtRouteSet.Text = sb.ToString();
}
else
{
_txtCallId.Text = _txtLocalTag.Text = _txtRemoteTag.Text = _txtLocalSeqNr.Text =
_txtRemoteSeqNr.Text =_txtLocalUri.Text = _txtRemoteUri.Text =_txtRemoteTarget.Text = "NULL";
_txtRouteSet.Text = "NULL";
}
}
private void Invite()
{
FormHelper.ValidateCondition(SipUtil.IsSipUri(_txtFromUri.Text), "From-uri");
FormHelper.ValidateCondition(SipUtil.IsSipUri(_txtToUri.Text), "To-uri");
var fromUri = SipUtil.ParseSipUri(_txtFromUri.Text);
var toUri = SipUtil.ParseSipUri(_txtToUri.Text);
if (_chkPeerToPeer.Checked) FormHelper.ValidateCondition(SipUtil.IsIpEndPoint(toUri.Host), "To-uri");
var requestUri = toUri;
var toAddress = AddressFactory.CreateAddress(_txtToAlias.Text, toUri);
var fromAddress = AddressFactory.CreateAddress(_txtFromAlias.Text, fromUri);
var toHeader = HeaderFactory.CreateToHeader(toAddress);
var fromHeader = HeaderFactory.CreateFromHeader(fromAddress, SipUtil.CreateTag());
var cseqHeader = HeaderFactory.CreateSCeqHeader(SipMethods.Invite, ++commandSequence);
var callIdheader = HeaderFactory.CreateCallIdHeader(SipUtil.CreateCallId());
var viaHeader = HeaderFactory.CreateViaHeader(SipProvider.ListeningPoint.Address,
SipProvider.ListeningPoint.Port, SipConstants.Udp,
SipUtil.CreateBranch());
var maxForwardsHeader = HeaderFactory.CreateMaxForwardsHeader(1);
var request = MessageFactory.CreateRequest(
requestUri,
SipMethods.Invite,
callIdheader,
cseqHeader,
fromHeader,
toHeader,
viaHeader,
maxForwardsHeader);
/*add routes and contacts*/
if (!_chkPeerToPeer.Checked)
{
var proxyServerUri = AddressFactory.CreateUri(null, MainForm.SipStack.OutBoundProxy.ToString());
proxyServerUri.IsLooseRouting = true;
var routeHeader = HeaderFactory.CreateRouteHeader(proxyServerUri);
request.Routes.Add(routeHeader);
}
var contactUri = AddressFactory.CreateUri(fromUri.User, viaHeader.SentBy.ToString());
var contactHeader = HeaderFactory.CreateContactHeader(contactUri);
request.Contacts.Add(contactHeader);
var transaction = SipProvider.CreateClientTransaction(request);
_dialog = SipProvider.CreateClientDialog(transaction);
transaction.SendRequest();
}
