/// <summary>
/// Gets existing or creates new dialog.
/// </summary>
/// <param name="transaction">Owner transaction what forces to create dialog.</param>
/// <param name="response">Response what forces to create dialog.</param>
/// <returns>Returns dialog.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>transaction</b> or <b>response</b> is null.</exception>
public SIP_Dialog GetOrCreateDialog(SIP_Transaction transaction, SIP_Response response)
{
if (transaction == null)
{
throw new ArgumentNullException("transaction");
}
if (response == null)
{
throw new ArgumentNullException("response");
}
string dialogID = "";
if (transaction is SIP_ServerTransaction)
{
dialogID = response.CallID + "-" + response.To.Tag + "-" + response.From.Tag;
}
else
{
dialogID = response.CallID + "-" + response.From.Tag + "-" + response.To.Tag;
}
lock (m_pDialogs){
SIP_Dialog dialog = null;
m_pDialogs.TryGetValue(dialogID, out dialog);
// Dialog doesn't exist, create it.
if (dialog == null)
{
if (response.CSeq.RequestMethod.ToUpper() == SIP_Methods.INVITE)
{
dialog = new SIP_Dialog_Invite();
}
else if (response.CSeq.RequestMethod.ToUpper() == SIP_Methods.REFER)
{
dialog = new SIP_Dialog_Refer();
}
else
{
throw new ArgumentException("Method '" + response.CSeq.RequestMethod + "' has no dialog handler.");
}
dialog.Init(m_pStack, transaction, response);
dialog.StateChanged += delegate(object s, EventArgs a){
if (dialog.State == SIP_DialogState.Terminated)
{
m_pDialogs.Remove(dialog.ID);
}
};
m_pDialogs.Add(dialog.ID, dialog);
}
return(dialog);
}
}
/// <summary>
/// Gets existing or creates new dialog.
/// </summary>
/// <param name="transaction">Owner transaction what forces to create dialog.</param>
/// <param name="response">Response what forces to create dialog.</param>
/// <returns>Returns dialog.</returns>
/// <exception cref="ArgumentNullException">Is raised when <b>transaction</b> or <b>response</b> is null.</exception>
public SIP_Dialog GetOrCreateDialog(SIP_Transaction transaction,SIP_Response response)
{
if(transaction == null){
throw new ArgumentNullException("transaction");
}
if(response == null){
throw new ArgumentNullException("response");
}
string dialogID = "";
if(transaction is SIP_ServerTransaction){
dialogID = response.CallID + "-" + response.To.Tag + "-" + response.From.Tag;
}
else{
dialogID = response.CallID + "-" + response.From.Tag + "-" + response.To.Tag;
}
lock(m_pDialogs){
SIP_Dialog dialog = null;
m_pDialogs.TryGetValue(dialogID,out dialog);
// Dialog doesn't exist, create it.
if(dialog == null){
if(response.CSeq.RequestMethod.ToUpper() == SIP_Methods.INVITE){
dialog = new SIP_Dialog_Invite();
}
else if(response.CSeq.RequestMethod.ToUpper() == SIP_Methods.REFER){
dialog = new SIP_Dialog_Refer();
}
else{
throw new ArgumentException("Method '" + response.CSeq.RequestMethod + "' has no dialog handler.");
}
dialog.Init(m_pStack,transaction,response);
dialog.StateChanged += delegate(object s,EventArgs a){
if(dialog.State == SIP_DialogState.Terminated){
m_pDialogs.Remove(dialog.ID);
}
};
m_pDialogs.Add(dialog.ID,dialog);
}
return dialog;
}
}
