C# SIP

sip,C#,IPusing System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Net;using System.Threading;using System.Net.Sockets;using LumiSoft.Net;using LumiSoft.Net.SDP;using LumiSoft.Net.SIP.Message;using LumiSoft.Net.SIP.Stack;using LumiSoft.Net.SIP.UA;namespace ClickToDial{ /// <summary> /// Application main window. /// </summary> public partial class wfrm_Main : Form { private SIP_Stack m_pStack = null; /// <summary> /// Default constructor. /// </summary> public wfrm_Main() { InitializeComponent(); m_pStack = new SIP_Stack(); m_pStack.BindInfo = new IPBindInfo[]{new IPBindInfo("",BindInfoProtocol.UDP,IPAddress.Any,4060)}; m_pStack.RequestReceived = new EventHandler<SIP_RequestReceivedEventArgs>(m_pStack_RequestReceived); m_pStack.Start(); wfrm_Debug stackDebug = new wfrm_Debug(m_pStack); stackDebug.Visible = true; } #region Events handling #region method m_pStack_RequestReceived private void m_pStack_RequestReceived(object sender,SIP_RequestReceivedEventArgs e) { // We must accpet NOTIFY requests only. Console.WriteLine(e.ToString()); if(e.Request.RequestLine.Method == SIP_Methods.NOTIFY){ e.ServerTransaction.SendResponse(m_pStack.CreateResponse(SIP_ResponseCodes.x200_Ok,e.Request)); //e.ServerTransaction.SendResponse(m_pStack.CreateResponse(SIP_ResponseCodes.x481_Call_Transaction_Does_Not_Exist,e.Request)); } else if(e.Request.RequestLine.Method == SIP_Methods.BYE){ e.ServerTransaction.SendResponse(m_pStack.CreateResponse(SIP_ResponseCodes.x200_Ok,e.Request)); //e.ServerTransaction.SendResponse(m_pStack.CreateResponse(SIP_ResponseCodes.x481_Call_Transaction_Does_Not_Exist,e.Request)); } else if(e.Request.RequestLine.Method == SIP_Methods.ACK){ } else{ e.ServerTransaction.SendResponse(m_pStack.CreateResponse(SIP_ResponseCodes.x501_Not_Implemented,e.Request)); } } #endregion #region method referDialog_Notify private void referDialog_Notify(object sender,SIP_RequestReceivedEventArgs e) { e.ServerTransaction.SendResponse(m_pStack.CreateResponse(SIP_ResponseCodes.x200_Ok,e.Request)); Console.WriteLine("NOTIFY: " Encoding.UTF8.GetString(e.Request.Data)); } #endregion #region method m_pDial_Click private void m_pDial_Click(object sender,EventArgs e) { this.Cursor = Cursors.WaitCursor; try{ SIP_Request invite = m_pStack.CreateRequest( SIP_Methods.INVITE, new SIP_t_NameAddress(null,SIP_Uri.Parse(m_pTo.Text)), new SIP_t_NameAddress(null,SIP_Uri.Parse(m_pFrom.Text)) ); invite.Route.Add("<" m_pProxy.Text ";lr>"); invite.ContentType = "application/sdp"; SDP_Message sdpOffer = new SDP_Message(); sdpOffer.Version = "0"; sdpOffer.Origin = new SDP_Origin("-",sdpOffer.GetHashCode(),1,"IN","IP4","192.168.1.111"); sdpOffer.SessionName = "SIP Call"; sdpOffer.Connection = new SDP_Connection("IN","IP4","192.168.1.111"); sdpOffer.Times.Add(new SDP_Time(0,0)); // Add dummy media. SDP_MediaDescription media = new SDP_MediaDescription(SDP_MediaTypes.audio,10000,1,"RTP/AVP",new string[]{"0"}); sdpOffer.MediaDescriptions.Add(media); invite.Data = sdpOffer.ToByte(); SIP_RequestSender requestSender = m_pStack.CreateRequestSender(invite); if(m_pUserName.Text.Length > 0){ requestSender.Credentials.Add(new NetworkCredential(m_pUserName.Text,m_pPassword.Text,m_pDomain.Text)); } bool referAccepted = false; string errorText = ""; AutoResetEvent waitLock = new AutoResetEvent(false); requestSender.ResponseReceived = new EventHandler<SIP_ResponseReceivedEventArgs>(delegate(object s1,SIP_ResponseReceivedEventArgs e1){ // REMOVE: Me Console.WriteLine("INVITE: " e1.Response.StatusCode_ReasonPhrase); if(e1.Response.StatusCodeType == SIP_StatusCodeType.Provisional){ } else if(e1.Response.StatusCodeType == SIP_StatusCodeType.Success){ SIP_Dialog dialog = (SIP_Dialog_Invite)m_pStack.TransactionLayer.GetOrCreateDialog(e1.ClientTransaction,e1.Response); //dialog.req // Create REFER request. SIP_Request refer = dialog.CreateRequest(SIP_Methods.REFER); refer.ReferTo = new SIP_t_AddressParam("<" m_pReferTo.Text ">"); SIP_RequestSender referSender = dialog.CreateRequestSender(refer); if(m_pUserName.Text.Length > 0){ referSender.Credentials.Add(new NetworkCredential(m_pUserName.Text,m_pPassword.Text,m_pDomain.Text)); } referSender.ResponseReceived = new EventHandler<SIP_ResponseReceivedEventArgs>(delegate(object s2,SIP_ResponseReceivedEventArgs e2){ // REMOVE: Me Console.WriteLine("REFER: " e2.Response.StatusCode_ReasonPhrase); if(e2.Response.StatusCodeType == SIP_StatusCodeType.Provisional){ } else if(e2.Response.StatusCodeType == SIP_StatusCodeType.Success){ // Close inital INVITE. dialog.Terminate(); referAccepted = true; waitLock.Set(); } else{ errorText = e2.Response.StatusCode_ReasonPhrase; waitLock.Set(); } }); referSender.Completed = new EventHandler(delegate(object s2,EventArgs e2){ waitLock.Set(); }); referSender.Start(); } else{ errorText = e1.Response.StatusCode_ReasonPhrase; waitLock.Set(); } }); requestSender.Completed = new EventHandler(delegate(object s2,EventArgs e2){ //waitLock.Set(); }); requestSender.Start(); waitLock.WaitOne(); if(referAccepted){ MessageBox.Show("Refer accepted."); } else{ MessageBox.Show("Refer rejected: " errorText); } } catch(Exception x){ MessageBox.Show(this,"Error:" x.Message,"Error:",MessageBoxButtons.OK,MessageBoxIcon.Error); } this.Cursor = Cursors.Default; } #endregion #region method wfrm_Main_FormClosed private void wfrm_Main_FormClosed(object sender, FormClosedEventArgs e) { m_pStack.Stop(); } #endregion #endregion }}