{
   This file is part of the Free Pascal run time library.
   (c) 2000-2003 by Marco van de Voort
   member of the Free Pascal development team.

   See the file COPYING.FPC, included in this distribution,
   for details about the copyright.

   OS dependant part of the header.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY;without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
}

Const
{*
 * Address families.
 *}
  AF_UNSPEC        = 0;		{ unspecified }
  AF_UNIX          = 1;		{ standardized name for AF_LOCAL }
  AF_LOCAL         = AF_UNIX;	{ local to host (pipes, portals) }
  AF_INET          = 2;		{ internetwork: UDP, TCP, etc. }
  AF_IMPLINK       = 3;		{ arpanet imp addresses }
  AF_PUP           = 4;		{ pup protocols: e.g. BSP }
  AF_CHAOS         = 5;		{ mit CHAOS protocols }
  AF_NETBIOS       = 6;		{ SMB protocols }
  AF_ISO           = 7;		{ ISO protocols }
  AF_OSI           = AF_ISO;
  AF_ECMA          = 8;		{ European computer manufacturers }
  AF_DATAKIT       = 9;		{ datakit protocols }
  AF_CCITT         = 10;	{ CCITT protocols, X.25 etc }
  AF_SNA           = 11;	{ IBM SNA }
  AF_DECnet        = 12;	{ DECnet }
  AF_DLI           = 13;	{ DEC Direct data link interface }
  AF_LAT           = 14;	{ LAT }
  AF_HYLINK        = 15;	{ NSC Hyperchannel }
  AF_APPLETALK     = 16;	{ Apple Talk }
  AF_ROUTE         = 17;	{ Internal Routing Protocol }
  AF_LINK          = 18;	{ Link layer interface }
  pseudo_AF_XTP    = 19;	{ eXpress Transfer Protocol (no AF) }
  AF_COIP          = 20;	{ connection-oriented IP, aka ST II }
  AF_CNT           = 21;	{ Computer Network Technology }
  pseudo_AF_RTIP   = 22;	{ Help Identify RTIP packets }
  AF_IPX           = 23;	{ Novell Internet Protocol }
  AF_SIP           = 24;	{ Simple Internet Protocol }
  pseudo_AF_PIP    = 25;	{ Help Identify PIP packets }
  AF_ISDN          = 26;	{ Integrated Services Digital Network}
  AF_E164          = AF_ISDN;	{ CCITT E.164 recommendation }
  pseudo_AF_KEY    = 27;	{ Internal key-management function }
  AF_INET6         = 28;	{ IPv6 }
  AF_NATM          = 29;	{ native ATM access }
  AF_ATM           = 30;	{ ATM }
  pseudo_AF_HDRCMPLT = 31;	{ Used by BPF to not rewrite headers
					 * in interface output routine
                                         }
  AF_NETGRAPH      = 32;	{ Netgraph sockets }
  AF_SLOW          = 33;	{ 802.3ad slow protocol }
  AF_SCLUSTER      = 34;	{ Sitara cluster protocol }
  AF_ARP           = 35;
  AF_BLUETOOTH     = 36;	{ Bluetooth sockets }
  AF_IEEE80211     = 37;	{ IEEE 802.11 protocol }
  AF_MAX           = 38;
  
  {
   * Protocol families, same as address families for now.
    }

  const
     PF_UNSPEC = AF_UNSPEC;
     PF_LOCAL = AF_LOCAL;
  { backward compatibility  }
     PF_UNIX = PF_LOCAL;
     PF_INET = AF_INET;
     PF_IMPLINK = AF_IMPLINK;
     PF_PUP = AF_PUP;
     PF_CHAOS = AF_CHAOS;
     PF_NETBIOS = AF_NETBIOS;
     PF_ISO = AF_ISO;
     PF_OSI = AF_ISO;
     PF_ECMA = AF_ECMA;
     PF_DATAKIT = AF_DATAKIT;
     PF_CCITT = AF_CCITT;
     PF_SNA = AF_SNA;
     PF_DECnet = AF_DECnet;
     PF_DLI = AF_DLI;
     PF_LAT = AF_LAT;
     PF_HYLINK = AF_HYLINK;
     PF_APPLETALK = AF_APPLETALK;
     PF_ROUTE = AF_ROUTE;
     PF_LINK = AF_LINK;
  { really just proto family, no AF  }
     PF_XTP = pseudo_AF_XTP;
     PF_COIP = AF_COIP;
     PF_CNT = AF_CNT;
     PF_SIP = AF_SIP;
     PF_IPX = AF_IPX;
  { same format as AF_INET  }
     PF_RTIP = pseudo_AF_RTIP;
     PF_PIP = pseudo_AF_PIP;
     PF_ISDN = AF_ISDN;
     PF_KEY = pseudo_AF_KEY;
     PF_INET6 = AF_INET6;
     PF_NATM = AF_NATM;
     PF_ATM = AF_ATM;
     PF_NETGRAPH = AF_NETGRAPH;
     PF_SLOW = AF_SLOW;
     PF_SCLUSTER = AF_SCLUSTER;
     PF_ARP = AF_ARP;
     PF_BLUETOOTH = AF_BLUETOOTH;
     PF_MAX = AF_MAX;


  SOCK_PACKET     = 10;


{ Maximum queue length specifiable by listen.  }
  SOMAXCONN     = 128;

        SOL_SOCKET 	 = $FFFF;
        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_REUSEPORT     = $0200;        { allow local address & port reuse }
        SO_TIMESTAMP     = $0400;        { timestamp received dgram traffic }

{
 * Additional options, not kept in so_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 }


        SHUT_RD         =0;             { shut down the reading side }
        SHUT_WR         =1;             { shut down the writing side }
        SHUT_RDWR       =2;             { shut down both sides }

	IPPROTO_IP              = 0;               { dummy for IP }
	IPPROTO_ICMP            = 1;               { control message protocol }
	IPPROTO_TCP             = 6;               { tcp }
	IPPROTO_UDP             = 17;              { user datagram protocol }


	IPPROTO_HOPOPTS		= 0 ; 		{ IP6 hop-by-hop options }
	IPPROTO_IGMP		= 2 ; 		{ group mgmt protocol }
	IPPROTO_GGP		= 3 ; 		{ gateway^2 (deprecated) }
	IPPROTO_IPV4		= 4 ; 		{ IPv4 encapsulation }
	IPPROTO_IPIP		= IPPROTO_IPV4;	{ for compatibility }
	IPPROTO_ST		= 7 ; 		{ Stream protocol II }
	IPPROTO_EGP		= 8 ; 		{ exterior gateway protocol }
	IPPROTO_PIGP		= 9 ; 		{ private interior gateway }
	IPPROTO_RCCMON		= 10; 		{ BBN RCC Monitoring }
	IPPROTO_NVPII		= 11; 		{ network voice protocol}
	IPPROTO_PUP		= 12; 		{ pup }
	IPPROTO_ARGUS		= 13; 		{ Argus }
	IPPROTO_EMCON		= 14; 		{ EMCON }
	IPPROTO_XNET		= 15; 		{ Cross Net Debugger }
	IPPROTO_CHAOS		= 16; 		{ Chaos}
	IPPROTO_MUX		= 18; 		{ Multiplexing }
	IPPROTO_MEAS		= 19; 		{ DCN Measurement Subsystems }
	IPPROTO_HMP		= 20; 		{ Host Monitoring }
	IPPROTO_PRM		= 21; 		{ Packet Radio Measurement }
	IPPROTO_IDP		= 22; 		{ xns idp }
	IPPROTO_TRUNK1		= 23; 		{ Trunk-1 }
	IPPROTO_TRUNK2		= 24; 		{ Trunk-2 }
	IPPROTO_LEAF1		= 25; 		{ Leaf-1 }
	IPPROTO_LEAF2		= 26; 		{ Leaf-2 }
	IPPROTO_RDP		= 27; 		{ Reliable Data }
	IPPROTO_IRTP		= 28; 		{ Reliable Transaction }
	IPPROTO_TP		= 29; 		{ tp-4 w/ class negotiation }
	IPPROTO_BLT		= 30; 		{ Bulk Data Transfer }
	IPPROTO_NSP		= 31; 		{ Network Services }
	IPPROTO_INP		= 32; 		{ Merit Internodal }
	IPPROTO_SEP		= 33; 		{ Sequential Exchange }
	IPPROTO_3PC		= 34; 		{ Third Party Connect }
	IPPROTO_IDPR		= 35; 		{ InterDomain Policy Routing }
	IPPROTO_XTP		= 36; 		{ XTP }
	IPPROTO_DDP		= 37; 		{ Datagram Delivery }
	IPPROTO_CMTP		= 38; 		{ Control Message Transport }
	IPPROTO_TPXX		= 39; 		{ TP++ Transport }
	IPPROTO_IL		= 40; 		{ IL transport protocol }
	IPPROTO_IPV6		= 41; 		{ IP6 header }
	IPPROTO_SDRP		= 42; 		{ Source Demand Routing }
	IPPROTO_ROUTING		= 43; 		{ IP6 routing header }
	IPPROTO_FRAGMENT	= 44; 		{ IP6 fragmentation header }
	IPPROTO_IDRP		= 45; 		{ InterDomain Routing}
	IPPROTO_RSVP		= 46; 		{ resource reservation }
	IPPROTO_GRE		= 47; 		{ General Routing Encap. }
	IPPROTO_MHRP		= 48; 		{ Mobile Host Routing }
	IPPROTO_BHA		= 49; 		{ BHA }
	IPPROTO_ESP		= 50; 		{ IP6 Encap Sec. Payload }
	IPPROTO_AH		= 51; 		{ IP6 Auth Header }
	IPPROTO_INLSP		= 52; 		{ Integ. Net Layer Security }
	IPPROTO_SWIPE		= 53; 		{ IP with encryption }
	IPPROTO_NHRP		= 54; 		{ Next Hop Resolution }
	IPPROTO_MOBILE		= 55; 		{ IP Mobility }
	IPPROTO_TLSP		= 56; 		{ Transport Layer Security }
	IPPROTO_SKIP		= 57; 		{ SKIP }
	IPPROTO_ICMPV6		= 58; 		{ ICMP6 }
	IPPROTO_NONE		= 59; 		{ IP6 no next header }
	IPPROTO_DSTOPTS		= 60; 		{ IP6 destination option }
	IPPROTO_AHIP		= 61; 		{ any host internal protocol }
	IPPROTO_CFTP		= 62; 		{ CFTP }
	IPPROTO_HELLO		= 63; 		{ "hello" routing protocol }
	IPPROTO_SATEXPAK	= 64; 		{ SATNET/Backroom EXPAK }
	IPPROTO_KRYPTOLAN	= 65; 		{ Kryptolan }
	IPPROTO_RVD		= 66; 		{ Remote Virtual Disk }
	IPPROTO_IPPC		= 67; 		{ Pluribus Packet Core }
	IPPROTO_ADFS		= 68; 		{ Any distributed FS }
	IPPROTO_SATMON		= 69; 		{ Satnet Monitoring }
	IPPROTO_VISA		= 70; 		{ VISA Protocol }
	IPPROTO_IPCV		= 71; 		{ Packet Core Utility }
	IPPROTO_CPNX		= 72; 		{ Comp. Prot. Net. Executive }
	IPPROTO_CPHB		= 73; 		{ Comp. Prot. HeartBeat }
	IPPROTO_WSN		= 74; 		{ Wang Span Network }
	IPPROTO_PVP		= 75; 		{ Packet Video Protocol }
	IPPROTO_BRSATMON	= 76; 		{ BackRoom SATNET Monitoring }
	IPPROTO_ND		= 77; 		{ Sun net disk proto (temp.) }
	IPPROTO_WBMON		= 78; 		{ WIDEBAND Monitoring }
	IPPROTO_WBEXPAK		= 79; 		{ WIDEBAND EXPAK }
	IPPROTO_EON		= 80; 		{ ISO cnlp }
	IPPROTO_VMTP		= 81; 		{ VMTP }
	IPPROTO_SVMTP		= 82; 		{ Secure VMTP }
	IPPROTO_VINES		= 83; 		{ Banyon VINES }
	IPPROTO_TTP		= 84; 		{ TTP }
	IPPROTO_IGP		= 85; 		{ NSFNET-IGP }
	IPPROTO_DGP		= 86; 		{ dissimilar gateway prot. }
	IPPROTO_TCF		= 87; 		{ TCF }
	IPPROTO_IGRP		= 88; 		{ Cisco/GXS IGRP }
	IPPROTO_OSPFIGP		= 89; 		{ OSPFIGP }
	IPPROTO_SRPC		= 90; 		{ Strite RPC protocol }
	IPPROTO_LARP		= 91; 		{ Locus Address Resoloution }
	IPPROTO_MTP		= 92; 		{ Multicast Transport }
	IPPROTO_AX25		= 93; 		{ AX.25 Frames }
	IPPROTO_IPEIP		= 94; 		{ IP encapsulated in IP }
	IPPROTO_MICP		= 95; 		{ Mobile Int.ing control }
	IPPROTO_SCCSP		= 96; 		{ Semaphore Comm. security }
	IPPROTO_ETHERIP		= 97; 		{ Ethernet IP encapsulation }
	IPPROTO_ENCAP		= 98; 		{ encapsulation header }
	IPPROTO_APES		= 99; 		{ any private encr. scheme }
	IPPROTO_GMTP		= 100;		{ GMTP}
	IPPROTO_IPCOMP		= 108;		{ payload compression (IPComp) }
{ 101-254: Partly Unassigned }
	IPPROTO_PIM		= 103;		{ Protocol Independent Mcast }
	IPPROTO_CARP		= 112;		{ CARP }
	IPPROTO_PGM		= 113;		{ PGM }
	IPPROTO_PFSYNC		= 240;		{ PFSYNC }

{ last return value of *_input(), meaning "all job for this pkt is done".  }
	IPPROTO_RAW             = 255;
	IPPROTO_MAX		= 256;
	IPPROTO_DONE		= 257;

{
 * Options for use with [gs]etsockopt at the IP level.
 * First word of comment is data type; bool is stored in int.
 }
	IP_OPTIONS		= 1 ;   { buf/ip_opts; set/get IP options }
	IP_HDRINCL		= 2 ;   { int; header is included with data }
	IP_TOS			= 3 ;   { int; IP type of service and preced. }
	IP_TTL			= 4 ;   { int; IP time to live }
	IP_RECVOPTS		= 5 ;   { bool; receive all IP opts w/dgram }
	IP_RECVRETOPTS		= 6 ;   { bool; receive IP opts for response }
	IP_RECVDSTADDR		= 7 ;   { bool; receive IP dst addr w/dgram }
	IP_SENDSRCADDR		= IP_RECVDSTADDR; { cmsg_type to set src addr }
	IP_RETOPTS		= 8 ;   { ip_opts; set/get IP options }
	IP_MULTICAST_IF		= 9 ;   { u_char; set/get IP multicast i/f  }
	IP_MULTICAST_TTL	= 10;   { u_char; set/get IP multicast ttl }
	IP_MULTICAST_LOOP	= 11;   { u_char; set/get IP multicast loopback }
	IP_ADD_MEMBERSHIP	= 12;   { ip_mreq; add an IP group membership }
	IP_DROP_MEMBERSHIP	= 13;   { ip_mreq; drop an IP group membership }
	IP_MULTICAST_VIF	= 14;   { set/get IP mcast virt. iface }
	IP_RSVP_ON		= 15;   { enable RSVP in kernel }
	IP_RSVP_OFF		= 16;   { disable RSVP in kernel }
	IP_RSVP_VIF_ON		= 17;   { set RSVP per-vif socket }
	IP_RSVP_VIF_OFF		= 18;   { unset RSVP per-vif socket }
	IP_PORTRANGE		= 19;   { int; range to choose for unspec port }
	IP_RECVIF		= 20;   { bool; receive reception if w/dgram }

{ for IPSEC }
	IP_IPSEC_POLICY		= 21;   { int; set/get security policy }
	IP_FAITH		= 22;   { bool; accept FAITH'ed connections }

	IP_ONESBCAST		= 23;   { bool: send all-ones broadcast }
                                
	IP_FW_TABLE_ADD		= 40;   { add entry }
	IP_FW_TABLE_DEL		= 41;   { delete entry }
	IP_FW_TABLE_FLUSH	= 42;   { flush table }
	IP_FW_TABLE_GETSIZE	= 43;   { get table size }
	IP_FW_TABLE_LIST	= 44;   { list table contents }

	IP_FW_ADD		= 50;   { add a firewall rule to chain }
	IP_FW_DEL		= 51;   { delete a firewall rule from chain }
	IP_FW_FLUSH		= 52;   { flush firewall rule chain }
	IP_FW_ZERO		= 53;   { clear single/all firewall counter(s) }
	IP_FW_GET		= 54;   { get entire firewall rule chain }
	IP_FW_RESETLOG		= 55;   { reset logging counters }

	IP_DUMMYNET_CONFIGURE	= 60;   { add/configure a dummynet pipe }
	IP_DUMMYNET_DEL		= 61;   { delete a dummynet pipe from chain }
	IP_DUMMYNET_FLUSH	= 62;   { flush dummynet }
	IP_DUMMYNET_GET		= 64;   { get entire dummynet pipes }

	IP_RECVTTL		= 65;   { bool; receive IP TTL w/dgram }

	IPV6_SOCKOPT_RESERVED1	= 3 ; { reserved for future use }
	IPV6_UNICAST_HOPS	= 4 ; { int; IP6 hops }
	IPV6_MULTICAST_IF	= 9 ; { u_int; setget IP6 multicast if  }
	IPV6_MULTICAST_HOPS	= 10; { int; setget IP6 multicast hops }
	IPV6_MULTICAST_LOOP	= 11; { u_int; setget IP6 multicast loopback }
	IPV6_JOIN_GROUP		= 12; { ip6_mreq; join a group membership }
	IPV6_LEAVE_GROUP	= 13; { ip6_mreq; leave a group membership }
	IPV6_PORTRANGE		= 14; { int; range to choose for unspec port }

	IPV6_PKTINFO            = 46; { in6_pktinfo; send if, src addr }	
 	IPV6_HOPLIMIT           = 47; { int; send hop limit }
 	IPV6_NEXTHOP            = 48; { sockaddr; next hop addr }
 	IPV6_HOPOPTS            = 49; { ip6_hbh; send hop-by-hop option }
 	IPV6_DSTOPTS            = 50; { ip6_dest; send dst option befor rthdr }
 	IPV6_RTHDR              = 51; { ip6_rthdr; send routing header }
 	IPV6_PKTOPTIONS         = 52; { buf/cmsghdr; set/get IPv6 options }
  
  { Flags for send, recv etc. }
  MSG_OOB       = $0001;              { Process out-of-band data}
  MSG_PEEK      = $0002;              { Peek at incoming messages }
  MSG_DONTROUTE = $0004;              { Don't use local routing }
  MSG_EOR       = $0008;              { End of record }
  MSG_TRUNC     = $0010;
  MSG_CTRUNC    = $0020;              { Control data lost before delivery }
  MSG_WAITALL   = $0040;              { Wait for a full request }
  MSG_DONTWAIT  = $0080;              { Non-blocking I/O }
  MSG_EOF       = $0100;
  MSG_NBIO      = $4000;
  MSG_COMPAT    = $8000;
  MSG_SOCALLBCK = $10000;
  MSG_NOSIGNAL  = $20000;              { Do not generate SIGPIPE }
  
  INVALID_SOCKET = -1;
  SOCKET_ERROR = -1;
