mcs/class/System/System.Net/IPEndPoint.cs

   1 //
   2 // System.Net.IPEndPoint.cs
   3 //
   4 // Author:
   5 //   Miguel de Icaza (miguel@ximian.com)
   6 //
   7 // (C) Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 using System.Net.Sockets;
  11
  12 namespace System.Net {
  13         [Serializable]
  14         public class IPEndPoint : EndPoint {
  15
  16                 public const int MaxPort = 65535;
  17                 public const int MinPort = 0;
  18
  19                 public IPEndPoint (IPAddress address, int port)
  20                 {
  21                         if (address == null)
  22                                 throw new ArgumentNullException ("Value cannot be null");
  23
  24                         Address = address;
  25                         Port = port;
  26                 }
  27
  28                 public IPEndPoint (long iaddr, int port) : this (new IPAddress (iaddr), port)
  29                 {
  30                 }
  31
  32                 private IPAddress address;
  33                 public IPAddress Address {
  34                         get {
  35                                 return(address);
  36                         }
  37                         set {
  38                                 address=value;
  39                         }
  40                 }
  41
  42                 public override AddressFamily AddressFamily {
  43                         get {
  44                                 return AddressFamily.InterNetwork;
  45                         }
  46                 }
  47
  48                 private int port;
  49                 public int Port {
  50                         get {
  51                                 return port;
  52                         }
  53                         set {
  54                                 // LAMESPEC: no mention of sanity checking
  55                                 // PS: MS controls the range when setting the value
  56                                 if (value < MinPort || value > MaxPort)
  57                                         throw new ArgumentOutOfRangeException ("Invalid port");
  58
  59                                 port = value;
  60                         }
  61                 }
  62
  63                 // bytes 2 and 3 store the port, the rest
  64                 // stores the address
  65                 public override EndPoint Create(SocketAddress sockaddr) {
  66                         int size=sockaddr.Size;
  67
  68                         // LAMESPEC: no mention of what to do if
  69                         // sockaddr is bogus
  70                         if(size<8) {
  71                                 // absolute minimum amount needed for
  72                                 // an address family, buffer size,
  73                                 // port and address
  74                                 return(null);
  75                         }
  76                         AddressFamily family=(AddressFamily)sockaddr[0];
  77                         if(family!=AddressFamily.InterNetwork) {
  78                                 return(null);
  79                         }
  80
  81                         int port=(((int)sockaddr[2])<<8) + (int)sockaddr[3];
  82                         long address=(((long)sockaddr[4])<<24) +
  83                                 (((long)sockaddr[5])<<16) +
  84                                 (((long)sockaddr[6])<<8) +
  85                                 (long)sockaddr[7];
  86
  87                         IPEndPoint ipe = new IPEndPoint(address, port);
  88
  89                         return(ipe);
  90                 }
  91
  92                 public override SocketAddress Serialize() {
  93                         // .net produces a 16 byte buffer, even though
  94                         // only 8 bytes are used. I guess its just a
  95                         // holdover from struct sockaddr padding.
  96                         SocketAddress sockaddr = new SocketAddress(AddressFamily.InterNetwork, 16);
  97
  98                         // bytes 2 and 3 store the port, the rest
  99                         // stores the address
 100                         sockaddr[2]=(byte)((port>>8) & 0xff);
 101                         sockaddr[3]=(byte)(port & 0xff);
 102
 103                         sockaddr[4]=(byte)((address.Address >> 24) & 0xff);
 104                         sockaddr[5]=(byte)((address.Address >> 16) & 0xff);
 105                         sockaddr[6]=(byte)((address.Address >> 8) & 0xff);
 106                         sockaddr[7]=(byte)(address.Address & 0xff);
 107
 108                         return(sockaddr);
 109                 }
 110
 111                 public override string ToString() {
 112                         return(address.ToString() + ":" + port);
 113                 }
 114
 115                 public override bool Equals (Object obj)
 116                 {
 117                         if (obj is System.Net.IPEndPoint) {
 118                                 return ( ((IPEndPoint) obj).port == port &&
 119                                          ((IPEndPoint) obj).address == address);
 120                         }
 121
 122                         return false;
 123                 }
 124
 125                 public override int GetHashCode ()
 126                 {
 127                         return address.GetHashCode () + port;
 128                 }
 129         }
 130 }