public SipInviteServerDialog CreateServerDialog(ISipServerTransaction transaction)
{
var inviteTx = transaction as SipInviteServerTransaction;
Check.Require(transaction, "transaction");
Check.IsTrue(inviteTx != null, "The transaction must be of type 'SipInviteServerTransaction'");
Check.Require(inviteTx.Request, "The request can not be null");
Check.Require(inviteTx.Request.From, "The From header can not be null");
Check.NotNullOrEmpty(inviteTx.Request.From.Tag, "From tag");
var dialog = new SipInviteServerDialog(
transaction,
_dialogTable,
_stack.GetTimerFactory(),
_stack.CreateHeaderFactory(),
_stack.CreateMessageFactory(),
_stack.CreateAddressFactory(),
this,
_sipListener,
_contextSource.ListeningPoint);
//setting the dialog is done out of the transaction.
//(otherwise you need to interface the SetDialog method, both on InviteClient & InviteServer transaction)
//thus creating again two separate interfaces or adding the method on existing interface thereby poluting.
inviteTx.SetDialog(dialog);
return(dialog);
}
public void ProcessRequest(IInternalSoftPhone softPhone, SipRequestEvent requestEvent)
{
string method = requestEvent.Request.RequestLine.Method;
if (method != SipMethods.Cancel)
{
if (_logger.IsDebugEnabled)
{
_logger.Debug("Received request: '{0}'. Request ignored.", method);
}
return;
}
if (_logger.IsInfoEnabled)
{
_logger.Info("'CANCEL' received. Start processing...");
}
#region attempt to match transaction
/*terminate pending invite with 487 (assumption: PendingInvite.OriginalRequest= requestEvent.ServerTransaction.Request)*/
if (_logger.IsDebugEnabled)
{
_logger.Debug("Attempting to match 'CANCEL' target-tx against a tx in the ServerTransactionTable...");
}
var txIdAttempts = CreateTxIdAttempts(requestEvent.Request);
ISipServerTransaction serverTransaction = null;
foreach (var txIdAttempt in txIdAttempts)
{
serverTransaction = softPhone.SipProvider.FindServerTransactionById(txIdAttempt);
if (serverTransaction != null)
{
break;
}
}
#endregion
if (serverTransaction == null)
{
#region no match
if (_logger.IsDebugEnabled)
{
_logger.Debug("Could not match 'CANCEL' to an existing transaction. Sending x487 response...");
}
var cancelResponse = requestEvent.Request.CreateResponse(SipResponseCodes.x481_Call_Transaction_Does_Not_Exist);
var cancelTx = softPhone.SipProvider.CreateServerTransaction(requestEvent.Request);
cancelTx.SendResponse(cancelResponse);
requestEvent.IsSent = true;
if (_logger.IsDebugEnabled)
{
_logger.Debug("x487 response send.");
}
#endregion
}
else
{
#region matched
#region respond to cancel with ok
if (_logger.IsDebugEnabled)
{
_logger.Debug("'CANCEL' target-tx matched. Answering to cancel with ok...");
}
var cancelOkResponse = requestEvent.Request.CreateResponse(SipResponseCodes.x200_Ok);
var cancelOkTx = softPhone.SipProvider.CreateServerTransaction(requestEvent.Request);
cancelOkTx.SendResponse(cancelOkResponse);
requestEvent.IsSent = true;
if (_logger.IsDebugEnabled)
{
_logger.Debug("Answered.");
}
#endregion
#region respond to matched tx with x487
if (serverTransaction.GetId() != softPhone.PendingInvite.InviteServerTransaction.GetId())
{
if (_logger.IsInfoEnabled)
{
_logger.Info("'CANCEL' target-tx does NOT match 'INVITE.' Processing ABORTED. The 'CANCEL' target-tx is expected, to match only to the pending 'INVITE' servertransaction.");
}
}
else
{
if (_logger.IsDebugEnabled)
{
_logger.Debug("Creating '487-Request terminated' response and sending...");
}
var requestToCancel = serverTransaction.Request;
var terminateResponse = requestToCancel.CreateResponse(SipResponseCodes.x487_Request_Terminated);
/*terminate pending invite.*/
softPhone.PendingInvite.InviteServerTransaction.SendResponse(terminateResponse);
if (_logger.IsDebugEnabled)
{
_logger.Debug("Response send.");
}
if (_logger.IsDebugEnabled)
{
_logger.Debug("Changing callstate to 'CANCELLED'.");
}
softPhone.PendingCall.RaiseCallStateChanged(CallState.Cancelled);
if (_logger.IsInfoEnabled)
{
_logger.Info("'CANCEL' Processed. Transitioning (back) to 'Idle'");
}
softPhone.ChangeState(softPhone.StateProvider.GetIdle());
}
#endregion
#endregion
}
}
public SipInviteServerDialog CreateServerDialog(ISipServerTransaction transaction)
{
var inviteTx = transaction as SipInviteServerTransaction;
Check.Require(transaction, "transaction");
Check.IsTrue(inviteTx != null, "The transaction must be of type 'SipInviteServerTransaction'");
Check.Require(inviteTx.Request, "The request can not be null");
Check.Require(inviteTx.Request.From, "The From header can not be null");
Check.NotNullOrEmpty(inviteTx.Request.From.Tag, "From tag");
var dialog = new SipInviteServerDialog(
transaction,
_dialogTable,
_stack.GetTimerFactory(),
_stack.CreateHeaderFactory(),
_stack.CreateMessageFactory(),
_stack.CreateAddressFactory(),
this,
_sipListener,
_contextSource.ListeningPoint);
//setting the dialog is done out of the transaction.
//(otherwise you need to interface the SetDialog method, both on InviteClient & InviteServer transaction)
//thus creating again two separate interfaces or adding the method on existing interface thereby poluting.
inviteTx.SetDialog(dialog);
return dialog;
}
