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STUN Client

, 20 Apr 2007 CPOL
STUN client C# implementation with sample application
Stun.zip
Stun
Net
docs
dns
dns_records.jpg
dns_records.vsd
Net
_junk
_Obsolete
_Stuff
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
SDP
ServersCore
SIP
Client
Message
Proxy
Stack
SMTP
Client
Server
STUN
Client
Message
STUN_Client_app
STUN_Client_app.suo
STUN_Client_app
bin
Debug
LumiSoft.Net.dll
STUN_Client_app.exe
STUN_Client_app.vshost.exe
dep
LumiSoft.Net.dll
Properties
Settings.settings
using System;
using System.Collections.Generic;
using System.Text;

namespace LumiSoft.Net.SIP.Message
{
    /// <summary>
    /// Implements SIP "challenge" value. Defined in RFC 3261.
    /// </summary>
    /// <remarks>
    /// <code>
    /// RFC 3261 Syntax:
    ///     challenge = ("Digest" LWS digest-cln *(COMMA digest-cln)) / other-challenge
    /// </code>
    /// </remarks>
    public class SIP_t_Challenge : SIP_t_Value
    {
        private string m_Method   = "";
        private string m_AuthData = "";

        /// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="value">SIP challenge value.</param>
        public SIP_t_Challenge(string value)
        {
            Parse(new StringReader(value));
        }


        #region method Parse

        /// <summary>
        /// Parses "challenge" from specified value.
        /// </summary>
        /// <param name="value">SIP "challenge" 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 "challenge" from specified reader.
        /// </summary>
        /// <param name="reader">Reader what contains challenge value.</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)
        {
            // challenge = ("Digest" LWS digest-cln *(COMMA digest-cln)) / other-challenge

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

            // Get authentication method
            string word = reader.ReadWord();
            if(word == null){
                throw new SIP_ParseException("Invalid WWW-Authenticate: value, authentication method is missing !");
            }
            m_Method = word;

            // Get authentication data
            word = reader.ReadToEnd();
            if(word == null){
                throw new SIP_ParseException("Invalid WWW-Authenticate: value, authentication parameters are missing !");
            }
            m_AuthData = word.Trim();
        }

        #endregion

        #region method ToStringValue

        /// <summary>
        /// Converts this to valid "challenge" value.
        /// </summary>
        /// <returns>Returns "challenge" value.</returns>
        public override string ToStringValue()
        {
            return m_Method + " " + m_AuthData;
        }

        #endregion
        

        #region Properties Implementation

        /// <summary>
        /// Gets or sets authentication method. Normally this value is always 'Digest'.
        /// </summary>
        public string Method
        {
            get{ return m_Method; }

            set{
                if(string.IsNullOrEmpty(value)){
                    throw new ArgumentException("Property Method value cant be null or mepty !");
                }

                m_Method = value;
            }
        }

        /// <summary>
        /// Gets or sets authentication data. That value depends on authentication type.
        /// </summary>
        public string AuthData
        {
            get{ return m_AuthData; }

            set{
                if(string.IsNullOrEmpty(value)){
                    throw new ArgumentException("Property AuthData value cant be null or mepty !");
                }

                m_AuthData = value;
            }
        }

        #endregion
    }
}

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License

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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