Send info

The SendInfo method is used by a client to send call signaling information to another client with which it has an established media session. This is different from a reinvite since it does not change the media characteristics of the session.

C# example

using System;
using Independentsoft.Sip;
using Independentsoft.Sip.Sdp;
using Independentsoft.Sip.Methods;

namespace Sample
{
    class Program
    {
        private static Logger logger;
        private static SipClient client;

        public static void Main(string[] args)
        {
            client = new SipClient("sipdomain.com", "Bob", "password");

            logger = new Logger();
            logger.WriteLog += new WriteLogEventHandler(OnWriteLog);
            client.Logger = logger;

            client.ReceiveRequest += new ReceiveRequestEventHandler(OnReceiveRequest);
            client.ReceiveResponse += new ReceiveResponseEventHandler(OnReceiveResponse);

            client.Connect();

            SessionDescription session = new SessionDescription();
            session.Version = 0;

            Owner owner = new Owner();
            owner.Username = "Bob";
            owner.SessionID = 16264;
            owner.Version = 18299;
            owner.Address = "192.168.0.1";

            session.Owner = owner;
            session.Name = "SIP Call";

            Connection connection = new Connection();
            connection.Address = "192.168.0.1";

            session.Connection = connection;

            Time time = new Time(0, 0);
            session.Time.Add(time);

            Media media1 = new Media();
            media1.Type = "audio";
            media1.Port = 25282;
            media1.TransportProtocol = "RTP/AVP";
            media1.MediaFormats.Add("0");
            media1.MediaFormats.Add("101");

            media1.Attributes.Add("rtpmap", "0 pcmu/8000");
            media1.Attributes.Add("rtpmap", "101 telephone-event/8000");
            media1.Attributes.Add("fmtp", "101 0-11");

            session.Media.Add(media1);

            RequestResponse inviteRequestResponse = client.Invite("sip:Bob@mydomain.com", "sip:Alice@mydomain.com", "sip:Bob@" + client.LocalIPEndPoint.ToString(), session);
            client.Ack(inviteRequestResponse);

            Dialog phoneCallDialog = client.GetDialog(inviteRequestResponse);

            client.SendInfo(phoneCallDialog, "51a6324134527", "message/isup");

            Console.WriteLine("Press ENTER to exit.");
            Console.Read();
            Console.Read();
            client.Disconnect();
        }

        private static void OnReceiveRequest(object sender, RequestEventArgs e)
        {
            client.AcceptRequest(e.Request);
        }

        private static void OnReceiveResponse(object sender, ResponseEventArgs e)
        {
        }

        private static void OnWriteLog(object sender, WriteLogEventArgs e)
        {
            Console.Write(e.Log);
        }
    }
}

VB example

Imports System
Imports Independentsoft.Sip
Imports Independentsoft.Sip.Sdp
Imports Independentsoft.Sip.Methods

Module Module1

    Private logger As Logger
    Private client As SipClient

    Public Sub Main(ByVal args() As String)

        client = New SipClient("sipdomain.com", "Bob", "password")

        logger = New Logger
        AddHandler logger.WriteLog, AddressOf OnWriteLog
        client.Logger = logger

        AddHandler client.ReceiveRequest, AddressOf OnReceiveRequest
        AddHandler client.ReceiveResponse, AddressOf OnReceiveResponse

        client.Connect()

        Dim session As SessionDescription = New SessionDescription
        session.Version = 0

        Dim owner As Owner = New Owner
        owner.Username = "Bob"
        owner.SessionID = 16264
        owner.Version = 18299
        owner.Address = "192.168.0.1"

        session.Owner = owner
        session.Name = "SIP Call"

        Dim connection As Connection = New Connection
        connection.Address = "192.168.0.1"

        session.Connection = connection

        Dim time As Time = New Time(0, 0)
        session.Time.Add(time)

        Dim media1 As Media = New Media
        media1.Type = "audio"
        media1.Port = 25282
        media1.TransportProtocol = "RTP/AVP"
        media1.MediaFormats.Add("0")
        media1.MediaFormats.Add("101")

        media1.Attributes.Add("rtpmap", "0 pcmu/8000")
        media1.Attributes.Add("rtpmap", "101 telephone-event/8000")
        media1.Attributes.Add("fmtp", "101 0-11")

        session.Media.Add(media1)

        Dim inviteRequestResponse As RequestResponse = client.Invite("sip:Bob@mydomain.com", "sip:Alice@mydomain.com", "sip:Bob" + client.LocalIPEndPoint.ToString(), session)
        client.Ack(inviteRequestResponse)

        Dim phoneCallDialog As Dialog = client.GetDialog(inviteRequestResponse)

        client.SendInfo(phoneCallDialog, "51a6324134527", "message/isup")

        Console.WriteLine("Press ENTER to exit.")
        Console.Read()
        Console.Read()
        client.Disconnect()

    End Sub

    Private Sub OnReceiveRequest(ByVal sender As Object, ByVal e As RequestEventArgs)
        client.AcceptRequest(e.Request)
    End Sub

    Private Sub OnReceiveResponse(ByVal sender As Object, ByVal e As ResponseEventArgs)
    End Sub

    Private Sub OnWriteLog(ByVal sender As Object, ByVal e As WriteLogEventArgs)
        Console.Write(e.Log)
    End Sub
End Module

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SIP .NET > Tutorial > Send info

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