/// <summary> /// Creates new client transaction. /// </summary> /// <param name="flow">SIP data flow which is used to send request.</param> /// <param name="request">SIP request that transaction will handle.</param> /// <param name="addVia">If true, transaction will add <b>Via:</b> header, otherwise it's user responsibility.</param> /// <exception cref="ObjectDisposedException">Is raised when this class is Disposed and this method is accessed.</exception> /// <exception cref="ArgumentNullException">Is raised when <b>flow</b> or <b>request</b> is null reference.</exception> /// <returns>Returns created transaction.</returns> public SIP_ClientTransaction CreateClientTransaction(SIP_Flow flow, SIP_Request request, bool addVia) { if (m_IsDisposed) { throw new ObjectDisposedException(this.GetType().Name); } if (flow == null) { throw new ArgumentNullException("flow"); } if (request == null) { throw new ArgumentNullException("request"); } // Add Via: if (addVia) { SIP_t_ViaParm via = new SIP_t_ViaParm(); via.ProtocolName = "SIP"; via.ProtocolVersion = "2.0"; via.ProtocolTransport = flow.Transport; via.SentBy = new HostEndPoint("transport_layer_will_replace_it", -1); via.Branch = SIP_t_ViaParm.CreateBranch(); via.RPort = 0; request.Via.AddToTop(via.ToStringValue()); } lock (m_pClientTransactions){ SIP_ClientTransaction transaction = new SIP_ClientTransaction(m_pStack, flow, request); m_pClientTransactions.Add(transaction.Key, transaction); transaction.StateChanged += new EventHandler(delegate(object s, EventArgs e){ if (transaction.State == SIP_TransactionState.Terminated) { lock (m_pClientTransactions){ m_pClientTransactions.Remove(transaction.Key); } } }); SIP_Dialog dialog = MatchDialog(request); if (dialog != null) { dialog.AddTransaction(transaction); } return(transaction); } }
/// <summary> /// Creates new SIP server transaction for specified request. /// </summary> /// <param name="flow">SIP data flow which is used to receive request.</param> /// <param name="request">SIP request.</param> /// <returns>Returns added server transaction.</returns> /// <exception cref="ObjectDisposedException">Is raised when this class is Disposed and this method is accessed.</exception> /// <exception cref="ArgumentNullException">Is raised when <b>flow</b> or <b>request</b> is null reference.</exception> public SIP_ServerTransaction CreateServerTransaction(SIP_Flow flow, SIP_Request request) { if (m_IsDisposed) { throw new ObjectDisposedException(this.GetType().Name); } if (flow == null) { throw new ArgumentNullException("flow"); } if (request == null) { throw new ArgumentNullException("request"); } lock (m_pServerTransactions){ SIP_ServerTransaction transaction = new SIP_ServerTransaction(m_pStack, flow, request); m_pServerTransactions.Add(transaction.Key, transaction); transaction.StateChanged += new EventHandler(delegate(object s, EventArgs e){ if (transaction.State == SIP_TransactionState.Terminated) { lock (m_pClientTransactions){ m_pServerTransactions.Remove(transaction.Key); } } }); SIP_Dialog dialog = MatchDialog(request); if (dialog != null) { dialog.AddTransaction(transaction); } return(transaction); } }