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