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STUN Client

, 20 Apr 2007
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.Collections.Specialized;
using System.Text;

namespace LumiSoft.Net.SIP.Message
{
    /// <summary>
    /// Implements SIP "From" value. Defined in RFC 3261.
    /// The From header field indicates the initiator of the request.
    /// </summary>
    /// <remarks>
    /// <code>
    /// RFC 3261 Syntax:
    ///     From       = ( name-addr / addr-spec ) *( SEMI from-param )
    ///     from-param = tag-param / generic-param
    ///     tag-param  = "tag" EQUAL token
    /// </code>
    /// </remarks>
    public class SIP_t_From : SIP_t_ValueWithParams
    {
        private SIP_t_NameAddress m_pAddress = null;

        /// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="value">From: header field value.</param>
        public SIP_t_From(string value)
        {
            m_pAddress = new SIP_t_NameAddress();

            Parse(new StringReader(value));
        }

        /// <summary>
        /// Default constructor.
        /// </summary>
        /// <param name="address">From address.</param>
        public SIP_t_From(SIP_t_NameAddress address)
        {
            m_pAddress = address;
        }


        #region method Parse

        /// <summary>
        /// Parses "From" from specified value.
        /// </summary>
        /// <param name="value">SIP "accept-range" 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 "From" 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)
        {
            /*  From       = ( name-addr / addr-spec ) *( SEMI from-param )
                from-param = tag-param / generic-param
            */

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

            // Parse address
            m_pAddress.Parse(reader);

            // Parse parameters
            ParseParameters(reader);
        }

        #endregion

        #region method ToStringValue

        /// <summary>
        /// Converts this to valid "From" value.
        /// </summary>
        /// <returns>Returns "From" value.</returns>
        public override string ToStringValue()
        {
            StringBuilder retVal = new StringBuilder();           
            retVal.Append(m_pAddress.ToStringValue()); 
            retVal.Append(this.ParametersToString());

            return retVal.ToString();
        }

        #endregion


        #region Properties Implementation
                
        /// <summary>
        /// Gets address.
        /// </summary>
        public SIP_t_NameAddress Address
        {
            get{ return m_pAddress; }
        }

        /// <summary>
        /// Gets or sets tag parameter value.
        /// The "tag" parameter serves as a general mechanism for dialog identification.
        /// Value null means that branch paramter doesn't exist.
        /// </summary>
        public string Tag
        {
            get{ 
                SIP_Parameter parameter = this.Parameters["tag"];
                if(parameter != null){
                    return parameter.Value;
                }
                else{
                    return null;
                }
            }

            set{                
                if(string.IsNullOrEmpty(value)){
                    this.Parameters.Remove("tag");
                }
                else{
                    this.Parameters.Set("tag",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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Web01 | 2.8.140926.1 | Last Updated 20 Apr 2007
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