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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;
using System.Collections.Generic;

namespace LumiSoft.Net.Mime
{
	/// <summary>
	/// Rfc 2822 3.4 address-list. Rfc defines two types of addresses mailbox and group.
	/// <p/>
	/// <p style="margin-top: 0; margin-bottom: 0"/><b>address-list</b> syntax: address *("," address).
	/// <p style="margin-top: 0; margin-bottom: 0"/><b>address</b> syntax: mailbox / group.
	/// <p style="margin-top: 0; margin-bottom: 0"/><b>mailbox</b> syntax: ['"'dispaly-name'"' ]&lt;localpart@domain&gt;.
	/// <p style="margin-top: 0; margin-bottom: 0"/><b>group</b> syntax: '"'dispaly-name'":' [mailbox *(',' mailbox)]';'.
	/// </summary>
	public class AddressList : IEnumerable
	{
		private HeaderField   m_HeaderField = null;
		private List<Address> m_pAddresses  = null;

		/// <summary>
		/// Default constructor.
		/// </summary>
		public AddressList()
		{
			m_pAddresses = new List<Address>();
		}

		
		#region method Add

		/// <summary>
		/// Adds a new address to the end of the collection.
		/// </summary>
		/// <param name="address">Address to add.</param>
		public void Add(Address address)
		{
			address.Owner = this;
			m_pAddresses.Add(address);
		
			OnCollectionChanged();
		}

		#endregion

		#region method Insert

		/// <summary>
		/// Inserts a new address into the collection at the specified location.
		/// </summary>
		/// <param name="index">The location in the collection where you want to add the address.</param>
		/// <param name="address">Address to add.</param>
		public void Insert(int index,Address address)
		{
			address.Owner = this;
			m_pAddresses.Insert(index,address);
	
			OnCollectionChanged();
		}

		#endregion


		#region method Remove
		
		/// <summary>
		/// Removes address at the specified index from the collection.
		/// </summary>
		/// <param name="index">Index of the address which to remove.</param>
		public void Remove(int index)
		{
			Remove((Address)m_pAddresses[index]);
		}

		/// <summary>
		/// Removes specified address from the collection.
		/// </summary>
		/// <param name="address">Address to remove.</param>
		public void Remove(Address address)
		{
			address.Owner = null;
			m_pAddresses.Remove(address);
		
			OnCollectionChanged();
		}

		#endregion

		#region method Clear

		/// <summary>
		/// Clears the collection of all addresses.
		/// </summary>
		public void Clear()
		{
			foreach(Address address in m_pAddresses){
				address.Owner = null;
			}
			m_pAddresses.Clear();

			OnCollectionChanged();
		}

		#endregion


		#region method Parse

		/// <summary>
		/// Parses address-list from string.
		/// </summary>
		/// <param name="addressList">Address list string.</param>
		/// <returns></returns>
		public void Parse(string addressList)
		{
			addressList = addressList.Trim();
				
			StringReader reader = new StringReader(addressList);
			while(reader.SourceString.Length > 0){
				// See if mailbox or group. If ',' is before ':', then mailbox
				// Example: xxx@domain.com,	group:xxxgroup@domain.com;
				int commaIndex = TextUtils.QuotedIndexOf(reader.SourceString,','); 
				int colonIndex = TextUtils.QuotedIndexOf(reader.SourceString,':');

				// Mailbox
				if(colonIndex == -1 || (commaIndex < colonIndex && commaIndex != -1)){
					// Read to ',' or to end if last element
                    MailboxAddress address = MailboxAddress.Parse(reader.QuotedReadToDelimiter(','));
					m_pAddresses.Add(address);
					address.Owner = this;
				}
					// Group
				else{
					// Read to ';', this is end of group
                    GroupAddress address = GroupAddress.Parse(reader.QuotedReadToDelimiter(';'));
					m_pAddresses.Add(address);
                    address.Owner = this;

					// If there are next items, remove first comma because it's part of group address
					if(reader.SourceString.Length > 0){
						reader.QuotedReadToDelimiter(',');
					}
				}
			}

			OnCollectionChanged();
		}

		#endregion


		#region method ToAddressListString
        
		/// <summary>
		/// Convert addresses to Rfc 2822 address-list string.
		/// </summary>
		/// <returns></returns>
		public string ToAddressListString()
		{
			string retVal = "";
			for(int i=0;i<m_pAddresses.Count;i++){
				if(m_pAddresses[i] is MailboxAddress){
					// For last address don't add , and <TAB>
					if(i == (m_pAddresses.Count - 1)){
						retVal += ((MailboxAddress)m_pAddresses[i]).ToMailboxAddressString();
					}
					else{
						retVal += ((MailboxAddress)m_pAddresses[i]).ToMailboxAddressString() + ",\t";
					}
				}
				else if(m_pAddresses[i] is GroupAddress){
					// For last address don't add , and <TAB>
					if(i == (m_pAddresses.Count - 1)){
						retVal += ((GroupAddress)m_pAddresses[i]).GroupString;
					}
					else{
						retVal += ((GroupAddress)m_pAddresses[i]).GroupString + ",\t";
					}
				}
			}
            
			return retVal;
		}

		#endregion


		#region internal method OnCollectionChanged

		/// <summary>
		/// This called when collection has changed. Item is added,deleted,changed or collection cleared.
		/// </summary>
		internal void OnCollectionChanged()
		{
			// AddressList is bounded to HeaderField, update header field value
			if(m_HeaderField != null){
				m_HeaderField.Value = this.ToAddressListString();
			}
		}

		#endregion


		#region interface IEnumerator

		/// <summary>
		/// Gets enumerator.
		/// </summary>
		/// <returns></returns>
		public IEnumerator GetEnumerator()
		{
			return m_pAddresses.GetEnumerator();
		}

		#endregion

		#region Properties Implementation

		/// <summary>
		/// Gets all mailbox addresses. Note: group address mailbox addresses are also included.
		/// </summary>
		public MailboxAddress[] Mailboxes
		{
			get{ 
				ArrayList adressesAll = new ArrayList();
				foreach(Address adress in this){
					if(!adress.IsGroupAddress){
						adressesAll.Add((MailboxAddress)adress);
					}
					else{
						foreach(MailboxAddress groupChildAddress in ((GroupAddress)adress).GroupMembers){
							adressesAll.Add((MailboxAddress)groupChildAddress);
						}
					}
				}

				MailboxAddress[] retVal = new MailboxAddress[adressesAll.Count];
				adressesAll.CopyTo(retVal);

				return retVal;
			}
		}

		/// <summary>
		/// Gets address from specified index.
		/// </summary>
		public Address this[int index]
		{
			get{ return (Address)m_pAddresses[index]; }
		}

		/// <summary>
		/// Gets address count in the collection.
		/// </summary>
		public int Count
		{
			get{ return m_pAddresses.Count; }
		}


		/// <summary>
		/// Bound address-list to specified header field.
		/// </summary>
		internal HeaderField BoundedHeaderField
		{
			get{ return m_HeaderField; }

			set{m_HeaderField = 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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