//-------------------------------------------------------------
//
//       Borland Delphi Runtime Library
//       <API> interface unit
//
// Portions created by Microsoft are
// Copyright (C) 1995-1999 Microsoft Corporation.
// All Rights Reserved.
//
// The original file is: Winsock2.h from CBuilder5 distribution.
// The original Pascal code is: winsock2.pas, released 04 Mar 2000.
// The initial developer of the Pascal code is Alex Konshin
// (alexk@mtgroup.ru).
//
// Portions created by Alex Konshin are
// Copyright (C) 1998-2000 Alex Konshin
//
// Contributor(s): Alex Konshin
//
//       Obtained through:
//
//       Joint Endeavour of Delphi Innovators (Project JEDI)
//
// You may retrieve the latest version of this file at the Project
// JEDI home page, located at http://delphi-jedi.org
//
// The contents of this file are used with permission, subject to
// the Mozilla Public License Version 1.1 (the "License"); you may
// not use this file except in compliance with the License. You may
// obtain a copy of the License at
// http://www.mozilla.org/MPL/MPL-1.1.html
//
// Software distributed under the License is distributed on an
// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
// implied. See the License for the specific language governing
// rights and limitations under the License.
//
//-------------------------------------------------------------


{ Winsock2.h -- definitions to be used with the WinSock 2 DLL and WinSock 2 applications.
  This header file corresponds to version 2.2.x of the WinSock API specification.
  This file includes parts which are Copyright (c) 1982-1986 Regents
  of the University of California. All rights reserved.
  The Berkeley Software License Agreement specifies the terms and
  conditions for redistribution. }

// converted by Alex Konshin, mailto:alexk@mtgroup.ru
// modified March,4 2000

unit WinSock2;

interface

uses SysUtils, Windows;

{$ALIGN OFF}
{$RANGECHECKS OFF}
{$WRITEABLECONST OFF}

//  Define the current Winsock version. To build an earlier Winsock version
//  application redefine this value prior to including Winsock2.h
const
  WINSOCK_VERSION = $0202;
  WINSOCK2_DLL = 'ws2_32.dll';

type
  u_char  = Byte;
  u_short = Word;
  u_int   = DWORD;
  u_long  = DWORD;

// The new type to be used in all instances which refer to sockets.
  TSocket = u_int;

  WSAEVENT = THandle;
  PWSAEVENT = ^WSAEVENT;
  LPWSAEVENT = PWSAEVENT;
{$IFDEF UNICODE}
  PMBChar = PWideChar;
{$ELSE}
  PMBChar = PChar;
{$ENDIF}

const
  FD_SETSIZE     =   64;

type
  PFDSet = ^TFDSet;
  TFDSet = packed record
    fd_count: u_int;
    fd_array: array[0..FD_SETSIZE-1] of TSocket;
  end;

  PTimeVal = ^TTimeVal;
  TTimeVal = packed record
    tv_sec: Longint;
    tv_usec: Longint;
  end;

const
  IOCPARM_MASK = $7f;
  IOC_VOID     = $20000000;
  IOC_OUT      = $40000000;
  IOC_IN       = $80000000;
  IOC_INOUT    = (IOC_IN or IOC_OUT);

// get # bytes to read
  FIONREAD     = IOC_OUT or (SizeOf(Longint) shl 16) or (Ord('f') shl 8) or 127;
// set/clear non-blocking i/o
  FIONBIO      = IOC_IN  or (SizeOf(Longint) shl 16) or (Ord('f') shl 8) or 126;
// set/clear async i/o
  FIOASYNC     = IOC_IN  or (SizeOf(Longint) shl 16) or (Ord('f') shl 8) or 125;

//  Socket I/O Controls

// set high watermark
  SIOCSHIWAT   = IOC_IN  or (SizeOf(Longint) shl 16) or (Ord('s') shl 8);
// get high watermark
  SIOCGHIWAT   = IOC_OUT or (SizeOf(Longint) shl 16) or (Ord('s') shl 8) or 1;
// set low watermark
  SIOCSLOWAT   = IOC_IN  or (SizeOf(Longint) shl 16) or (Ord('s') shl 8) or 2;
// get low watermark
  SIOCGLOWAT   = IOC_OUT or (SizeOf(Longint) shl 16) or (Ord('s') shl 8) or 3;
// at oob mark?
  SIOCATMARK   = IOC_OUT or (SizeOf(Longint) shl 16) or (Ord('s') shl 8) or 7;


//  Structures returned by network data base library, taken from the
//  BSD file netdb.h.  All addresses are supplied in host order, and
//  returned in network order (suitable for use in system calls).
type
  PHostEnt = ^THostEnt;
  THostEnt = packed record
    h_name: PChar;                 // official name of host
    h_aliases: ^PChar;             // alias list
    h_addrtype: Smallint;          // host address type
    h_length: Smallint;            // length of address
    case Byte of
      0: (h_addr_list: ^PChar);    // list of addresses
      1: (h_addr: ^PChar);         // address, for backward compat
  end;

//  It is assumed here that a network number
//  fits in 32 bits.
  PNetEnt = ^TNetEnt;
  TNetEnt = packed record
    n_name: PChar;                 // official name of net
    n_aliases: ^PChar;             // alias list
    n_addrtype: Smallint;          // net address type
    n_net: u_long;                 // network #
  end;

  PServEnt = ^TServEnt;
  TServEnt = packed record
    s_name: PChar;                 // official service name
    s_aliases: ^PChar;             // alias list
    s_port: Smallint;              // protocol to use
    s_proto: PChar;                // port #
  end;

  PProtoEnt = ^TProtoEnt;
  TProtoEnt = packed record
    p_name: PChar;                 // official protocol name
    p_aliases: ^Pchar;             // alias list
    p_proto: Smallint;             // protocol #
  end;

// Constants and structures defined by the internet system,
// Per RFC 790, September 1981, taken from the BSD file netinet/in.h.
const

// Protocols
  IPPROTO_IP     =   0;             // dummy for IP
  IPPROTO_ICMP   =   1;             // control message protocol
  IPPROTO_IGMP   =   2;             // group management protocol
  IPPROTO_GGP    =   3;             // gateway^2 (deprecated)
  IPPROTO_TCP    =   6;             // TCP
  IPPROTO_PUP    =  12;             // pup
  IPPROTO_UDP    =  17;             // UDP - user datagram protocol
  IPPROTO_IDP    =  22;             // xns idp
  IPPROTO_ND     =  77;             // UNOFFICIAL net disk proto

  IPPROTO_RAW    = 255;             // raw IP packet
  IPPROTO_MAX    = 256;

// Port/socket numbers: network standard functions
  IPPORT_ECHO        =   7;
  IPPORT_DISCARD     =   9;
  IPPORT_SYSTAT      =  11;
  IPPORT_DAYTIME     =  13;
  IPPORT_NETSTAT     =  15;
  IPPORT_FTP         =  21;
  IPPORT_TELNET      =  23;
  IPPORT_SMTP        =  25;
  IPPORT_TIMESERVER  =  37;
  IPPORT_NAMESERVER  =  42;
  IPPORT_WHOIS       =  43;
  IPPORT_MTP         =  57;

// Port/socket numbers: host specific functions
  IPPORT_TFTP        =  69;
  IPPORT_RJE         =  77;
  IPPORT_FINGER      =  79;
  IPPORT_TTYLINK     =  87;
  IPPORT_SUPDUP      =  95;

// UNIX TCP sockets
  IPPORT_EXECSERVER  = 512;
  IPPORT_LOGINSERVER = 513;
  IPPORT_CMDSERVER   = 514;
  IPPORT_EFSSERVER   = 520;

// UNIX UDP sockets
  IPPORT_BIFFUDP     = 512;
  IPPORT_WHOSERVER   = 513;
  IPPORT_ROUTESERVER = 520;

// Ports < IPPORT_RESERVED are reserved for  privileged processes (e.g. root).
  IPPORT_RESERVED    =1024;

// Link numbers
  IMPLINK_IP         = 155;
  IMPLINK_LOWEXPER   = 156;
  IMPLINK_HIGHEXPER  = 158;

  TF_DISCONNECT      = $01;
  TF_REUSE_SOCKET    = $02;
  TF_WRITE_BEHIND    = $04;

// This is used instead of -1, since the TSocket type is unsigned.
  INVALID_SOCKET     = TSocket(not(0));
  SOCKET_ERROR       = -1;

//  The  following  may  be used in place of the address family, socket type, or
//  protocol  in  a  call  to WSASocket to indicate that the corresponding value
//  should  be taken from the supplied WSAPROTOCOL_INFO structure instead of the
//  parameter itself.
  FROM_PROTOCOL_INFO = -1;


// Types
  SOCK_STREAM     = 1;               { stream socket }
  SOCK_DGRAM      = 2;               { datagram socket }
  SOCK_RAW        = 3;               { raw-protocol interface }
  SOCK_RDM        = 4;               { reliably-delivered message }
  SOCK_SEQPACKET  = 5;               { sequenced packet stream }

// Option flags per-socket.
  SO_DEBUG            = $0001;            // turn on debugging info recording
  SO_ACCEPTCONN       = $0002;            // socket has had listen()
  SO_REUSEADDR        = $0004;            // allow local address reuse
  SO_KEEPALIVE        = $0008;            // keep connections alive
  SO_DONTROUTE        = $0010;            // just use interface addresses
  SO_BROADCAST        = $0020;            // permit sending of broadcast msgs
  SO_USELOOPBACK      = $0040;            // bypass hardware when possible
  SO_LINGER           = $0080;            // linger on close if data present
  SO_OOBINLINE        = $0100;            // leave received OOB data in line

  SO_DONTLINGER       = not SO_LINGER;
  SO_EXCLUSIVEADDRUSE = not SO_REUSEADDR; // disallow local address reuse

// Additional options.

  SO_SNDBUF           = $1001;      // send buffer size
  SO_RCVBUF           = $1002;      // receive buffer size
  SO_SNDLOWAT         = $1003;      // send low-water mark
  SO_RCVLOWAT         = $1004;      // receive low-water mark
  SO_SNDTIMEO         = $1005;      // send timeout
  SO_RCVTIMEO         = $1006;      // receive timeout
  SO_ERROR            = $1007;      // get error status and clear
  SO_TYPE             = $1008;      // get socket type

// Options for connect and disconnect data and options.
// Used only by non-TCP/IP transports such as DECNet, OSI TP4, etc.
  SO_CONNDATA         = $7000;
  SO_CONNOPT          = $7001;
  SO_DISCDATA         = $7002;
  SO_DISCOPT          = $7003;
  SO_CONNDATALEN      = $7004;
  SO_CONNOPTLEN       = $7005;
  SO_DISCDATALEN      = $7006;
  SO_DISCOPTLEN       = $7007;

// Option for opening sockets for synchronous access.
  SO_OPENTYPE         = $7008;
  SO_SYNCHRONOUS_ALERT    = $10;
  SO_SYNCHRONOUS_NONALERT = $20;

// Other NT-specific options.
  SO_MAXDG                 = $7009;
  SO_MAXPATHDG             = $700A;
  SO_UPDATE_ACCEPT_CONTEXT = $700B;
  SO_CONNECT_TIME          = $700C;

// TCP options.
  TCP_NODELAY              = $0001;
  TCP_BSDURGENT            = $7000;

// WinSock 2 extension -- new options
  SO_GROUP_ID              = $2001; // ID of a socket group
  SO_GROUP_PRIORITY        = $2002; // the relative priority within a group
  SO_MAX_MSG_SIZE          = $2003; // maximum message size
  SO_Protocol_InfoA        = $2004; // WSAPROTOCOL_INFOA structure
  SO_Protocol_InfoW        = $2005; // WSAPROTOCOL_INFOW structure
{$IFDEF UNICODE}