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The Labs \ Source Viewer \ SSCLI \ System.Net \ AddressInfoHints

SSCLI
  1. //------------------------------------------------------------------------------
  2. // <copyright file="_OSSOCK.cs" company="Microsoft">
  3. //
  4. // Copyright (c) 2006 Microsoft Corporation. All rights reserved.
  5. //
  6. // The use and distribution terms for this software are contained in the file
  7. // named license.txt, which can be found in the root of this distribution.
  8. // By using this software in any fashion, you are agreeing to be bound by the
  9. // terms of this license.
  10. //
  11. // You must not remove this notice, or any other, from this software.
  12. //
  13. // </copyright>
  14. //------------------------------------------------------------------------------
  16. namespace System.Net
  17. {
  18.     using System.Net.Sockets;
  19.     using System.Runtime.InteropServices;
  20.    
  21.     //
  22.     // Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
  23.     //
  24.     [StructLayout(LayoutKind.Sequential)]
  25.     internal struct IPMulticastRequest
  26.     {
  27.         internal int MulticastAddress;
  28.         // IP multicast address of group
  29.         internal int InterfaceAddress;
  30.         // local IP address of interface
  31.         static internal readonly int Size = Marshal.SizeOf(typeof(IPMulticastRequest));
  32.     }
  33.    
  34.     [StructLayout(LayoutKind.Sequential)]
  35.     internal struct Linger
  36.     {
  37.         internal short OnOff;
  38.         // option on/off
  39.         internal short Time;
  40.         // linger time
  41.         static internal readonly int Size = Marshal.SizeOf(typeof(Linger));
  42.     }
  43.    
  44.     [StructLayout(LayoutKind.Sequential)]
  45.     internal struct WSABuffer
  46.     {
  47.         internal int Length;
  48.         // Length of Buffer
  49.         internal IntPtr Pointer;
  50.         // Pointer to Buffer
  51.     }
  52.    
  53.     [StructLayout(LayoutKind.Sequential)]
  54.     internal class TransmitFileBuffers
  55.     {
  56.         internal IntPtr preBuffer;
  57.         // Pointer to Buffer
  58.         internal int preBufferLength;
  59.         // Length of Buffer
  60.         internal IntPtr postBuffer;
  61.         // Pointer to Buffer
  62.         internal int postBufferLength;
  63.         // Length of Buffer
  64.     }
  65.    
  66.     [StructLayout(LayoutKind.Sequential)]
  67.     internal struct WSAData
  68.     {
  69.         internal short wVersion;
  70.         internal short wHighVersion;
  71.         [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 257)]
  72.         internal string szDescription;
  73.         [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 129)]
  74.         internal string szSystemStatus;
  75.         internal short iMaxSockets;
  76.         internal short iMaxUdpDg;
  77.         internal IntPtr lpVendorInfo;
  78.     }
  79.    
  80.     // data structures and types needed for getaddrinfo calls.
  81.     [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
  82.     unsafe internal struct AddressInfo
  83.     {
  84.         internal AddressInfoHints ai_flags;
  85.         internal AddressFamily ai_family;
  86.         internal SocketType ai_socktype;
  87.         internal ProtocolFamily ai_protocol;
  88.         internal int ai_addrlen;
  89.         internal sbyte* ai_canonname;
  90.         // Ptr to the cannonical name - check for NULL
  91.         internal byte* ai_addr;
  92.         // Ptr to the sockaddr structure
  93.         internal AddressInfo* ai_next;
  94.         // Ptr to the next AddressInfo structure
  95.     }
  96.    
  97.     [Flags()]
  98.     internal enum AddressInfoHints
  99.     {
  100.         AI_PASSIVE = 1,
  101. /* Socket address will be used in bind() call */        AI_CANONNAME = 2,
  102. /* Return canonical name in first ai_canonname */        AI_NUMERICHOST = 4
  103.         /* Nodename must be a numeric address string */    }
  104.    
  105.     [Flags()]
  106.     internal enum NameInfoFlags
  107.     {
  108.         NI_NOFQDN = 1,
  109. /* Only return nodename portion for local hosts */        NI_NUMERICHOST = 2,
  110. /* Return numeric form of the host's address */        NI_NAMEREQD = 4,
  111. /* Error if the host's name not in DNS */        NI_NUMERICSERV = 8,
  112. /* Return numeric form of the service (port #) */        NI_DGRAM = 16
  113.         /* Service is a datagram service */    }
  114.    
  115.     // Argument structure for IPV6_ADD_MEMBERSHIP and IPV6_DROP_MEMBERSHIP.
  116.     [StructLayout(LayoutKind.Sequential)]
  117.     internal struct IPv6MulticastRequest
  118.     {
  119.         [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
  120.         internal byte[] MulticastAddress;
  121.         // IP address of group
  122.         internal int InterfaceIndex;
  123.         // local interface index
  124.         static internal readonly int Size = Marshal.SizeOf(typeof(IPv6MulticastRequest));
  125.     }
  126.    
  127.     //
  128.     // used as last parameter to WSASocket call
  129.     //
  130.     [Flags()]
  131.     internal enum SocketConstructorFlags
  132.     {
  133.         WSA_FLAG_OVERLAPPED = 1,
  134.         WSA_FLAG_MULTIPOINT_C_ROOT = 2,
  135.         WSA_FLAG_MULTIPOINT_C_LEAF = 4,
  136.         WSA_FLAG_MULTIPOINT_D_ROOT = 8,
  137.         WSA_FLAG_MULTIPOINT_D_LEAF = 16
  138.     }
  139. }
  140. // namespace System.Net

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