/sipsorcery-core/SIPSorcery.SIP.App/SIPUserAgents/SIPTransferServerUserAgent.cs
C# | 255 lines | 185 code | 23 blank | 47 comment | 9 complexity | 3eb23209d3e5375bff31feb564aa7e3a MD5 | raw file
Possible License(s): CC-BY-SA-3.0
- //-----------------------------------------------------------------------------
- // Filename: SIPTransferServerUserAgent.cs
- //
- // Description: The interface definition for SIP Server User Agents (UAC).
- //
- // History:
- // 21 Jan 2010 Aaron Clauson Created.
- //
- // License:
- // This software is licensed under the BSD License http://www.opensource.org/licenses/bsd-license.php
- //
- // Copyright (c) 2010 Aaron Clauson (aaron@sipsorcery.com), SIP Sorcery Ltd, London, UK (www.sipsorcery.com)
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without modification, are permitted provided that
- // the following conditions are met:
- //
- // Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- // Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
- // disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of Blue Face Ltd.
- // nor the names of its contributors may be used to endorse or promote products derived from this software without specific
- // prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
- // BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- // IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- // OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- // OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- // POSSIBILITY OF SUCH DAMAGE.
- //-----------------------------------------------------------------------------
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Net;
- using System.Text;
- using SIPSorcery.Sys;
- using log4net;
- namespace SIPSorcery.SIP.App
- {
- /// <summary>
- /// A server user agent that replaces an existing sip dialogue rather than creating a new dialogue with
- /// a client user agent.
- /// </summary>
- public class SIPTransferServerUserAgent : ISIPServerUserAgent
- {
- private static ILog logger = AppState.logger;
- public SIPCallDirection CallDirection
- {
- get { return SIPCallDirection.Out; }
- }
- public SIPDialogue SIPDialogue
- {
- get { throw new NotImplementedException("SIPTransferServerUserAgent SIPDialogue"); }
- }
- public SIPAccount SIPAccount
- {
- get
- {
- return null;
- }
- set
- {
- throw new NotImplementedException("SIPTransferServerUserAgent SIPAccount set");
- }
- }
- public bool IsAuthenticated
- {
- get
- {
- throw new NotImplementedException("SIPTransferServerUserAgent IsAuthenticated get");
- }
- set
- {
- throw new NotImplementedException("SIPTransferServerUserAgent IsAuthenticated set");
- }
- }
- public bool IsB2B
- {
- get { return false; }
- }
- public SIPRequest CallRequest
- {
- get { return m_dummyRequest; }
- }
- public string CallDestination
- {
- get { return m_callDestination; }
- }
- public bool IsUASAnswered
- {
- get { return m_answered; }
- }
- public string Owner
- {
- get { return m_owner; }
- }
- private SIPMonitorLogDelegate Log_External = (e) => { }; //SIPMonitorEvent.DefaultSIPMonitorLogger;
- private BlindTransferDelegate BlindTransfer_External;
- private SIPTransport m_sipTransport;
- private SIPEndPoint m_outboundProxy; // If the system needs to use an outbound proxy for every request this will be set and overrides any user supplied values.
- private SIPDialogue m_dialogueToReplace;
- private SIPDialogue m_oppositeDialogue;
- private string m_owner;
- private string m_adminID;
- private bool m_answered;
- private string m_callDestination;
- private SIPRequest m_dummyRequest; // Used to get the SDP for into the dialplan.
- public event SIPUASDelegate CallCancelled;
- public event SIPUASDelegate NoRingTimeout;
- public event SIPUASDelegate TransactionComplete;
- public event SIPUASStateChangedDelegate UASStateChanged;
- public SIPTransferServerUserAgent(
- SIPMonitorLogDelegate logDelegate,
- BlindTransferDelegate blindTransfer,
- SIPTransport sipTransport,
- SIPEndPoint outboundProxy,
- SIPDialogue dialogueToReplace,
- SIPDialogue oppositeDialogue,
- string callDestination,
- string owner,
- string adminID)
- {
- Log_External = logDelegate;
- BlindTransfer_External = blindTransfer;
- m_sipTransport = sipTransport;
- m_outboundProxy = outboundProxy;
- m_dialogueToReplace = dialogueToReplace;
- m_oppositeDialogue = oppositeDialogue;
- m_callDestination = callDestination;
- m_owner = owner;
- m_adminID = adminID;
- m_dummyRequest = CreateDummyRequest(m_dialogueToReplace, m_callDestination);
- }
- public void Progress(SIPResponseStatusCodesEnum progressStatus, string reasonPhrase, string[] customHeaders, string progressContentType, string progressBody)
- {
- if (UASStateChanged != null)
- {
- UASStateChanged(this, progressStatus, reasonPhrase);
- }
- if (progressBody != null)
- {
- // Re-invite the remote dialogue so that they can listen to some real progress tones.
- }
- }
- public SIPDialogue Answer(string contentType, string body, SIPDialogue answeredDialogue, SIPDialogueTransferModesEnum transferMode)
- {
- return Answer(contentType, body, null, answeredDialogue, transferMode);
- }
- /// <summary>
- /// An answer on a blind transfer means the remote end of the dialogue being replaced should be re-invited and then the replaced dialogue
- /// should be hungup.
- /// </summary>
- /// <param name="contentType"></param>
- /// <param name="body"></param>
- /// <param name="toTag"></param>
- /// <param name="answeredDialogue"></param>
- /// <param name="transferMode"></param>
- /// <returns></returns>
- public SIPDialogue Answer(string contentType, string body, string toTag, SIPDialogue answeredDialogue, SIPDialogueTransferModesEnum transferMode)
- {
- try
- {
- if (m_answered)
- {
- Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "A blind transfer received an answer on an already answered call, hanging up dialogue.", m_owner));
- answeredDialogue.Hangup(m_sipTransport, m_outboundProxy);
- }
- else
- {
- m_answered = true;
- Log_External(new SIPMonitorConsoleEvent(SIPMonitorServerTypesEnum.AppServer, SIPMonitorEventTypesEnum.DialPlan, "A blind transfer received an answer.", m_owner));
- if (UASStateChanged != null)
- {
- UASStateChanged(this, SIPResponseStatusCodesEnum.Ok, null);
- }
- BlindTransfer_External(m_dialogueToReplace, m_oppositeDialogue, answeredDialogue);
- }
- return null;
- }
- catch (Exception excp)
- {
- logger.Error("Exception SIPTransferServerUserAgent Answer. " + excp.Message);
- throw;
- }
- }
- public void Reject(SIPResponseStatusCodesEnum failureStatus, string reasonPhrase, string[] customHeaders)
- {
- logger.Warn("SIPTransferServerUserAgent Reject called with " + failureStatus + " " + reasonPhrase + ".");
- if (UASStateChanged != null)
- {
- UASStateChanged(this, failureStatus, reasonPhrase);
- }
- }
- public void Redirect(SIPResponseStatusCodesEnum redirectCode, SIPURI redirectURI)
- {
- throw new NotImplementedException("SIPTransferServerUserAgent Redirect");
- }
-
- public void NoCDR()
- {
- throw new NotImplementedException("SIPTransferServerUserAgent NoCDR");
- }
- public void SetTraceDelegate(SIPTransactionTraceMessageDelegate traceDelegate)
- {
- //throw new NotImplementedException();
- }
- public bool LoadSIPAccountForIncomingCall()
- {
- throw new NotImplementedException("SIPTransferServerUserAgent LoadSIPAccountForIncomingCall");
- }
- public bool AuthenticateCall()
- {
- throw new NotImplementedException("SIPTransferServerUserAgent AuthenticateCall");
- }
- public void SetOwner(string owner, string adminMemberId)
- {
- m_owner = owner;
- m_adminID = adminMemberId;
- }
- private SIPRequest CreateDummyRequest(SIPDialogue dialogueToReplace, string callDestination)
- {
- SIPRequest dummyInvite = new SIPRequest(SIPMethodsEnum.INVITE, SIPURI.ParseSIPURIRelaxed(callDestination + "@sipsorcery.com"));
- SIPHeader dummyHeader = new SIPHeader("<sip:anon@sipsorcery.com>", "<sip:anon@sipsorcery.com>", 1, CallProperties.CreateNewCallId());
- dummyHeader.CSeqMethod = SIPMethodsEnum.INVITE;
- dummyHeader.Vias.PushViaHeader(new SIPViaHeader(new IPEndPoint(SIPTransport.BlackholeAddress, 0), CallProperties.CreateBranchId()));
- dummyInvite.Header = dummyHeader;
- dummyInvite.Header.ContentType = "application/sdp";
- dummyInvite.Body = dialogueToReplace.SDP;
- return dummyInvite;
- }
- }
- }