GVL (GVL)¶

InOut:

Scope	Name	Type	Initial	Comment
Constant	SOCKET_AF_UNSPEC	INT	0	AddressFamily: unspecified
	SOCKET_AF_LOCAL	INT	1	AddressFamily: local to host (pipes, portals)
	SOCKET_AF_UNIX	INT	1	AddressFamily: backward compatibility
	SOCKET_AF_INET	INT	2	AddressFamily: DINTernetwork: UDP, TCP, etc.
	SOCKET_AF_IMPLINK	INT	3	AddressFamily: arpanet imp addresses
	SOCKET_AF_PUP	INT	4	AddressFamily: pup protocols: e.g. BSP
	SOCKET_AF_CHAOS	INT	5	AddressFamily: mit CHAOS protocols
	SOCKET_AF_NS	INT	6	AddressFamily: XEROX NS protocols
	SOCKET_AF_ISO	INT	7	AddressFamily: ISO protocols
	SOCKET_AF_OSI	INT	7	AddressFamily: OSI protocols
	SOCKET_AF_ECMA	INT	8	AddressFamily: european computer manufacturers
	SOCKET_AF_DATAKIT	INT	9	AddressFamily: datakit protocols
	SOCKET_AF_CCITT	INT	10	AddressFamily: CCITT protocols, X.25 etc
	SOCKET_AF_SNA	INT	11	AddressFamily: IBM SNA
	SOCKET_AF_DECnet	INT	12	AddressFamily: DECnet
	SOCKET_AF_DLI	INT	13	AddressFamily: DEC Direct data link DINTerface
	SOCKET_AF_LAT	INT	14	AddressFamily: LAT
	SOCKET_AF_HYLINK	INT	15	AddressFamily: NSC Hyperchannel
	SOCKET_AF_APPLETALK	INT	16	AddressFamily: Apple Talk
	SOCKET_AF_ROUTE	INT	17	AddressFamily: DINTernal Routing Protocol
	SOCKET_AF_LINK	INT	18	AddressFamily: Link layer DINTerface
	SOCKET_pseudo_AF_XTP	INT	19	AddressFamily: eXpress Transfer Protocol (no AF)
	SOCKET_AF_COIP	INT	20	AddressFamily: connection-oriented IP, aka ST II
	SOCKET_AF_CNT	INT	21	AddressFamily: Computer Network Technology
	SOCKET_pseudo_AF_RTIP	INT	22	AddressFamily: Help Identify RTIP packets
	SOCKET_AF_IPX	INT	23	AddressFamily: Novell DINTernet Protocol
	SOCKET_AF_SIP	INT	24	AddressFamily: Simple DINTernet Protocol
	SOCKET_pseudo_AF_PIP	INT	25	AddressFamily: Help Identify PIP packets
	SOCKET_AF_MAX	INT	26	AddressFamily: Max definition
	SOCKET_AF_INET_BSD	INT	100	AddressFamily: BSD-specific INET af
	SOCKET_AF_INET_STREAMS	INT	101	AddressFamily: STREAMS-specific INET af
	SOCKET_IPPROTO_IP	DINT	0	Protocols: IP level
	SOCKET_IPPROTO_ICMP	DINT	1	Protocols: control message protocol
	SOCKET_IPPROTO_IGMP	DINT	2	Protocols: group management protocol
	SOCKET_IPPROTO_GGP	DINT	3	Protocols: gateway^2 (deprecated)
	SOCKET_IPPROTO_TCP	DINT	6	Protocols: tcp
	SOCKET_IPPROTO_PUP	DINT	12	Protocols: pup
	SOCKET_IPPROTO_UDP	DINT	17	Protocols: user datagram protocol
	SOCKET_IPPROTO_IDP	DINT	22	Protocols: xns idp
	SOCKET_IPPROTO_ND	DINT	77	Protocols: UNOFFICIAL net disk proto
	SOCKET_IPPROTO_TLS	DINT	254	Protocols: UNOFFICIAL TCP / TLS protocol
	SOCKET_IPPROTO_RAW	DINT	255	Protocols: raw IP packet
	SOCKET_IPPROTO_MAX	DINT	256	Protocols: Max definition
	SOCKET_SOL	DINT	16#FFFF	Level number for SysSockGetOption/SysSockSetOption: Apply to socket itself in the same numbering space as IPPROTO_TCP, IPPROTO_IP, etc.
	SOCKET_DEVICE_SPECIFIC	DINT	ANY_TO_DINT(16#80000000)	Offset for the level number for non-portable device specific socket options. device specific level = socket option level + 16#80000000 Behavior of the SysSockGetOption/SysSockSetOption functions: If bit 31 (zero-based) is set, then remove it and pass the level without a mapping. Examples: device specific level for SOCKET_SOL = 16#8000FFFF device specific level for SOCKET_IPPROTO_IP = 16#80000000 device specific level for IPPROTO_TCP = 16#80000006
	SOCKET_SO_DEBUG	DINT	16#1	Socket options for SysSockGetOption()/SysSockSetOption() Socket option: turn on debugging info recording
	SOCKET_SO_ACCEPTCONN	DINT	16#2	Socket option: socket has had listen()
	SOCKET_SO_REUSEADDR	DINT	16#4	Socket option: allow local address reuse
	SOCKET_SO_KEEPALIVE	DINT	16#8	Socket option: keep connections alive. See RTS_SOCKET_SO_VALUE_TCP_KEEPALIVE for extended parameters for this option.
	SOCKET_SO_DONTROUTE	DINT	16#10	Socket option: just use interface addresses
	SOCKET_SO_BROADCAST	DINT	16#20	Socket option: permit sending (and on some platforms also receiving) of broadcast msgs
	SOCKET_SO_USELOOPBACK	DINT	16#40	Socket option: bypass hardware when possible
	SOCKET_SO_LINGER	DINT	16#80	Socket option: linger on close if data present. See RTS_SOCKET_SO_VALUE_LINGER for extended parameters for this option.
	SOCKET_SO_OOBINLINE	DINT	16#100	Socket option: leave received OOB data in line
	SOCKET_SO_REUSEPORT	DINT	16#200	Socket option: allow local address & port reuse
	SOCKET_SO_SNDBUF	DINT	16#1001	Socket option: send buffer size
	SOCKET_SO_RCVBUF	DINT	16#1002	Socket option: receive buffer size
	SOCKET_SO_SNDLOWAT	DINT	16#1003	Socket option: send low-water mark
	SOCKET_SO_RCVLOWAT	DINT	16#1004	Socket option: receive low-water mark
	SOCKET_SO_SNDTIMEO	DINT	16#1005	Socket option: send timeout
	SOCKET_SO_RCVTIMEO	DINT	16#1006	Socket option: receive timeout
	SOCKET_SO_ERROR	DINT	16#1007	Socket option: get error status and clear
	SOCKET_SO_TYPE	DINT	16#1008	Socket option: get socket type
	SOCKET_SO_PROTOTYPE	DINT	16#1009	Socket option: get/set protocol type
SOCKET_SO_HOSTNAME	DINT	16#2001	Socket option: get/set hostname for tls connections. Needed for SNI (Server Name Indication)
SOCKET_SO_STARTTLS	DINT	16#3001	Socket option: upgrade standard socket to TLS. Works only on sockets with socket type SYSSOCK_TYPE_STARTTLS!
SOCKET_TCP_NODELAY	DINT	16#1	Socket TCP options for SysSockGetOption()/SysSockSetOption() Only to be used for SOCKET_IPPROTO_TCP. TCPIP option: don’t delay send to coalesce packets
SOCKET_TCP_MAXSEG	DINT	16#2	TCPIP option: set maximum segment size
SOCKET_IP_TOS	DINT	16#1	IP options for SysSockGetOption()/SysSockSetOption() Only to be used for SOCKET_IPPROTO_IP. Socket option: Specify the DSCP (ToS successor) field of the IP frame
SOCKET_IP_MULTICAST_IF	DINT	16#9	IP option: IP multicast interface
SOCKET_SO_MULTICAST_IF	DINT	16#9	Socket option: IP multicast interface - obsolete only for backward compatibility.
SOCKET_IP_MULTICAST_TTL	DINT	16#A	IP option: IP multicast TTL (hop limit)
SOCKET_IP_MULTICAST_LOOP	DINT	16#B	IP option: IP multicast loopback
SOCKET_IP_ADD_MEMBERSHIP	DINT	16#C	IP option: Add an IP group membership. See RTS_SOCKET_SO_VALUE_IP_MREQ for extended parameters for this option.
SOCKET_IP_DROP_MEMBERSHIP	DINT	16#D	IP option: Drop an IP group membership. See RTS_SOCKET_SO_VALUE_IP_MREQ for extended parameters for this option.
SOCKET_IP_DONTFRAGMENT	DINT	16#E	IP option: Indicates that data should not be fragmented regardless of the local MTU. Valid only for message oriented protocols (UDP etc).
SOCKET_IP_PKTINFO	DINT	16#13	IP option: Pass an IP_PKTINFO ancillary message that contains a pktinfo structure that supplies some information about the incoming packet. This works only for datagram oriented sockets. The argument is a flag that tells the socket whether the IP_PKTINFO message should be passed or not.
SOCKET_STREAM	DINT	1	Socket types: stream socket
SOCKET_DGRAM	DINT	2	Socket types: datagram socket
SOCKET_RAW	DINT	3	Socket types: raw-protocol interface
SOCKET_RDM	DINT	4	Socket types: reliably-delivered message
SOCKET_SEQPACKET	DINT	5	Socket types: sequenced packet stream
SOCKET_INADDR_ANY	UDINT	16#0	Inet address definition: Any address
SOCKET_INADDR_LOOPBACK	UDINT	16#7F000001	Inet address definition: Loopback device
SOCKET_INADDR_BROADCAST	UDINT	16#FFFFFFFF	Inet address definition: Broadcast
SOCKET_INADDR_NONE	UDINT	16#FFFFFFFF	Inet address definition: Unspecified
SOCKET_FIONREAD	DINT	1	Ioctl commands: get num chars available to read
SOCKET_FIONBIO	DINT	2	Ioctl commands: set to non-blocking
SOCKET_MSG_NONE	DINT	16#0	Message flags: No flag
SOCKET_MSG_OOB	DINT	16#1	Message flags: process out-of-band data
SOCKET_MSG_PEEK	DINT	16#2	Message flags: peek at incoming message
SOCKET_MSG_DONTROUTE	DINT	16#4	Message flags: send without using routing tables
SOCKET_MSG_DONTWAIT	DINT	16#8	Message flags: send TCP frame directly without blocking
SOCKET_MSG_BCAST	DINT	16#400	Message flags: Indicates that the packet was received as broadcast.
SOCKET_MSG_MCAST	DINT	16#800	Message flags: Indicates that the packet was received as multicast.
SOCKET_SD_RECEIVE	DINT	16#0	Shutdown flags: Receive is no longer allowed
SOCKET_SD_SEND	DINT	16#1	Shutdown flags: Send is no longer allowed
SOCKET_SD_BOTH	DINT	16#2	Shutdown flags: Send and receive is no longer allowed
SOCKET_FD_SETSIZE	DINT	64	SysSockSelect() descriptor
MAX_SOCKET_FD_SETSIZE	DINT	63	SysSockSelect() descriptor
ADAPTER_INFO_MAC_ADDR_LENGTH	INT	6	Definitions for adapter information: BYTE length of MAC address; fix value
ADAPTER_INFO_NAME_LEN	INT	255	max. length of adapter name
ADAPTER_INFO_DESC_LEN	INT	255	max. length of adapter description
ADAPTER_INFO_DNSSUFFIX_LEN	INT	255	max. length of adapter description
SOCK_AIT_ETHERNET	WORD	1	Definitions for adapter information: Adapter type: Generic ethernet adapter - default, if nothing else matches
SOCK_AIT_LOCALHOST	WORD	2	Adapter type: Localhost adapter
SOCK_AIT_PPP	WORD	3	Adapter type: PPP adapter - broadcasts are not supported
SOCK_AIT_WIRELESS	WORD	4	Adapter type: Wireless (e. g. WLAN) network adapter
SOCK_AIF_NONE	DWORD	16#0	Definitions for adapter information: Adapter information flags: No flag set
SOCK_AIF_INACTIVE	DWORD	16#1	Adapter information flags: Interface not ready for ip communication (no driver, no ip address, no link, …)
SOCK_AIF_ALIAS_IP	DWORD	16#2	Adapter information flags: Further ip (aka alias address) of adapter
SOCK_AIF_DYNAMIC_IP	DWORD	16#4	Adapter information flags: Dynamic ip address, provided by DHCP, BOOTP, etc. Cannot be changed by SysSockSetIpAddressAndNetMask()
SOCK_AIF_FIX_IP	DWORD	16#8	Adapter information flags: Fix (e. g. hard coded) ip address. Cannot be changed by SysSockSetIpAddressAndNetMask()
SOCK_AIF_IP_CHANGE_ALLOWED	DWORD	16#10	Adapter information flags: Adapter is white listed to allow address changes. If non of the flags SOCK_AIF_DYNAMIC_IP or SOCK_AIF_FIX_IP is set, the ip address can be likely changed by SysSockSetIpAddressAndNetMask()
SOCK_AIF_GATEWAY_INFO_VALID	DWORD	16#20	Adapter information flags: DefaultGateway address is valid. Is not set, if no Gateway information is provided by the system.
SOCK_AIF_DNS_INFO_VALID	DWORD	16#40	Adapter information flags: DNS address and suffix is valid. Is not set, if no DNS information is provided by the system.
SOCK_AIF_DHCP_INFO_VALID	DWORD	16#80	Adapter information flags: DHCP address is valid. Is not set, if no DHCP information is provided by the system.
SOCK_AIF_INFO_VALID	DWORD	16#8000	Adapter information flags: Adapter is valid - only valid adapters are returned by SysSockGetFirstAdapterInfo() or SysSockGetNextAdapterInfo()