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SIP Stack with SIP Proxy - (VOIP)

, 11 Jun 2007 CPOL
C# implementation of SIP
SIP_Proxy_demo.zip
SIP_Proxy_demo
SIP_Proxy_demo.suo
SIP_Proxy_demo
bin
Debug
LumiSoft.Net.dll
SIP_Proxy_demo.exe
SIP_Proxy_demo.vshost.exe
dep
LumiSoft.Net.dll
LumiSoft.Net.pdb
Properties
Settings.settings
Resources
add.ico
app.ico
delete.ico
edit.ico
error.ico
info.ico
refresh.ico
rule.ico
server_running.ico
server_stopped.ico
viewmessages.ico
Stack.zip
Net
docs
dns
dns_records.jpg
dns_records.vsd
Net
_junk
_Obsolete
AUTH
bin
Release
LumiSoft.Net.dll
Data
Dns
Client
FTP
Client
Server
HTTP
Server
ICMP
IMAP
Client
Server
IO
Log
LumiSoft.Net
Mime
vCard
Net.csproj.user
Net.suo
NNTP
Client
POP3
Client
Server
RTP
SDP
ServersCore
SIP
Client
Message
Proxy
Stack
SMTP
Client
Server
STUN
Client
Message
URI
using System;
using System.Collections.Generic;
using System.Text;

namespace LumiSoft.Net.SIP.Message
{
    /// <summary>
    /// Implements SIP "RAck" value. Defined in RFC 3262.
    /// </summary>
    /// <remarks>
    /// <code>
    /// RFC 3262 Syntax:
    ///     RAck         = response-num LWS CSeq-num LWS Method
    ///     response-num = 1*DIGIT
    ///     CSeq-num     = 1*DIGIT
    /// </code>
    /// </remarks>
    public class SIP_t_RAck : SIP_t_Value
    {
        private int    m_ResponseNumber = 1;
        private int    m_CSeqNumber     = 1;
        private string m_Method         = "";

        /// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="value">RAck value.</param>
        public SIP_t_RAck(string value)
        {
            Parse(value);
        }

        /// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="responseNo">Response number.</param>
        /// <param name="cseqNo">CSeq number.</param>
        /// <param name="method">Request method.</param>
        public SIP_t_RAck(int responseNo,int cseqNo,string method)
        {
            this.ResponseNumber = responseNo;
            this.CSeqNumber     = cseqNo;
            this.Method         = method;
        }


        #region method Parse

        /// <summary>
        /// Parses "RAck" from specified value.
        /// </summary>
        /// <param name="value">SIP "RAck" value.</param>
        /// <exception cref="ArgumentNullException">Raised when <b>value</b> is null.</exception>
        /// <exception cref="SIP_ParseException">Raised when invalid SIP message.</exception>
        public void Parse(string value)
        {
            if(value == null){
                throw new ArgumentNullException("value");
            }

            Parse(new StringReader(value));
        }

        /// <summary>
        /// Parses "RAck" from specified reader.
        /// </summary>
        /// <param name="reader">Reader from where to parse.</param>
        /// <exception cref="ArgumentNullException">Raised when <b>reader</b> is null.</exception>
        /// <exception cref="SIP_ParseException">Raised when invalid SIP message.</exception>
        public override void Parse(StringReader reader)
        {
            /*
                RAck         = response-num LWS CSeq-num LWS Method
                response-num = 1*DIGIT
                CSeq-num     = 1*DIGIT
            */

            if(reader == null){
                throw new ArgumentNullException("reader");
            }

            // response-num
            string word = reader.ReadWord();
            if(word == null){
                throw new SIP_ParseException("RAck response-num value is missing !");
            }
            try{
                m_ResponseNumber = Convert.ToInt32(word);
            }
            catch{
                throw new SIP_ParseException("Invalid RAck response-num value !");
            }

            // CSeq-num
            word = reader.ReadWord();
            if(word == null){
                throw new SIP_ParseException("RAck CSeq-num value is missing !");
            }
            try{
                m_CSeqNumber = Convert.ToInt32(word);
            }            
            catch{
                throw new SIP_ParseException("Invalid RAck CSeq-num value !");
            }

            // Get request method
            word = reader.ReadWord();
            if(word == null){
                throw new SIP_ParseException("RAck Method value is missing !");
            }
            m_Method = word;
        }

        #endregion

        #region method ToStringValue

        /// <summary>
        /// Converts this to valid "RAck" value.
        /// </summary>
        /// <returns>Returns "RAck" value.</returns>
        public override string ToStringValue()
        {
            /*
                RAck         = response-num LWS CSeq-num LWS Method
                response-num = 1*DIGIT
                CSeq-num     = 1*DIGIT
            */

            return m_ResponseNumber + " " + m_CSeqNumber + " " + m_Method;
        }

        #endregion


        #region Properties Implementation

        /// <summary>
        /// Gets or sets response number.
        /// </summary>
        public int ResponseNumber
        {
            get{ return m_ResponseNumber; }

            set{
                if(value < 1){
                    throw new ArgumentException("ResponseNumber value must be >= 1 !");
                }

                m_ResponseNumber = value;
            }
        }

        /// <summary>
        /// Gets or sets CSeq number.
        /// </summary>
        public int CSeqNumber
        {
            get{ return m_CSeqNumber; }

            set{
                if(value < 1){
                    throw new ArgumentException("CSeqNumber value must be >= 1 !");
                }

                m_CSeqNumber = value;
            }
        }

        /// <summary>
        /// Gets or sets method.
        /// </summary>
        public string Method
        {
            get{ return m_Method; }

            set{
                if(value == null){
                    throw new ArgumentNullException("Method");
                }

                m_Method = value;
            }
        }

        #endregion

    }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Ivar Lumi

Estonia Estonia
No Biography provided

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