//------------------------------------------------------------------------------
// <copyright file="DnsEndPoint.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
 
using System.Net.Sockets;
 
namespace System.Net
{
    public class DnsEndPoint : EndPoint
    {
        private string m_Host;
        private int m_Port;
        private AddressFamily m_Family;
 
        public DnsEndPoint(string host, int port) : this(host, port, AddressFamily.Unspecified) {}
 
        public DnsEndPoint(string host, int port, AddressFamily addressFamily)
        {
            if(host == null) {
                throw new ArgumentNullException("host");
            }
 
            if (String.IsNullOrEmpty(host)) {
                throw new ArgumentException(SR.GetString(SR.net_emptystringcall, "host"));
            }
 
            if(port < IPEndPoint.MinPort || port > IPEndPoint.MaxPort) {
                throw new ArgumentOutOfRangeException("port");
            }
 
            if (addressFamily != AddressFamily.InterNetwork &&
                addressFamily != AddressFamily.InterNetworkV6 &&
                addressFamily != AddressFamily.Unspecified)
            {
                throw new ArgumentException(SR.GetString(SR.net_sockets_invalid_optionValue_all), "addressFamily");
            }
 
            m_Host = host;
            m_Port = port;
            m_Family = addressFamily;
        }
 
        public override bool Equals(object comparand)
        {
            DnsEndPoint dnsComparand = comparand as DnsEndPoint;
 
            if (dnsComparand == null)
                return false;
 
            return (m_Family == dnsComparand.m_Family &&
                    m_Port == dnsComparand.m_Port &&
                    m_Host == dnsComparand.m_Host);
        }
 
        public override int GetHashCode()
        {
            return StringComparer.InvariantCultureIgnoreCase.GetHashCode(ToString());
        }
 
        public override string ToString()
        {
            return m_Family + "/" + m_Host + ":" + m_Port;
        }
 
        public string Host
        {
            get {
                return m_Host;
            }
        }
 
        public override AddressFamily AddressFamily
        {
            get {
                return m_Family;
            }
        }
 
        public int Port
        {
            get {
                return m_Port;
            }
        }
    }
}