SOCKET_FD_SET (STRUCT) ¶ TYPE SOCKET_FD_SET : STRUCT InOut: Name Type fd_count UDINT fd_array ARRAY [0..MAX_SOCKET_FD_SETSIZE] OF DINT

SOCKET_LINGER (STRUCT) ¶ TYPE SOCKET_LINGER : STRUCT InOut: Name Type l_onoff WORD l_linger WORD

SOCKET_TIMEVAL (STRUCT) ¶ TYPE SOCKET_TIMEVAL : STRUCT InOut: Name Type tv_sec DINT tv_usec DINT

Global Variables ¶ Globale_Variablen (GVL)

Globale_Variablen (GVL) ¶ InOut: Scope Name Type Initial Comment Constant SOCKET_INVALID DINT -1 SOCKET_AF_UNSPEC INT 0 unspecified SOCKET_AF_LOCAL INT 1 local to host (pipes, portals) SOCKET_AF_UNIX INT SOCKET_AF_LOCAL backward compatibility SOCKET_AF_INET INT 2 internetwork: UDP, TCP, etc. SOCKET_AF_IMPLINK INT 3 arpanet imp addresses SOCKET_AF_PUP INT 4 pup protocols: e.g. BSP SOCKET_AF_CHAOS INT 5 mit CHAOS protocols SOCKET_AF_NS INT 6 XEROX NS protocols SOCKET_AF_ISO INT 7 ISO protocols SOCKET_AF_OSI INT SOCKET_AF_ISO SOCKET_AF_ECMA INT 8 european computer manufacturers SOCKET_AF_DATAKIT INT 9 datakit protocols SOCKET_AF_CCITT INT 10 CCITT protocols, X.25 etc SOCKET_AF_SNA INT 11 IBM SNA SOCKET_AF_DECnet INT 12 DECnet SOCKET_AF_DLI INT 13 DEC Direct data link interface SOCKET_AF_LAT INT 14 LAT SOCKET_AF_HYLINK INT 15 NSC Hyperchannel SOCKET_AF_APPLETALK INT 16 Apple Talk SOCKET_AF_ROUTE INT 17 Internal Routing Protocol SOCKET_AF_LINK INT 18 Link layer interface SOCKET_pseudo_AF_XTP INT 19 eXpress Transfer Protocol (no AF) SOCKET_AF_COIP INT 20 connection-oriented IP, aka ST II SOCKET_AF_CNT INT 21 Computer Network Technology SOCKET_pseudo_AF_RTIP INT 22 Help Identify RTIP packets SOCKET_AF_IPX INT 23 Novell Internet Protocol SOCKET_AF_SIP INT 24 Simple Internet Protocol SOCKET_pseudo_AF_PIP INT 25 Help Identify PIP packets SOCKET_AF_MAX INT 26 SOCKET_AF_INET_BSD INT 100 BSD-specific INET af SOCKET_AF_INET_STREAMS INT 101 STREAMS-specific INET af SOCKET_SOL WORD 16#FFFF Level number for (get/set)sockopt() to apply to socket itself. SOCKET_SO_DEBUG DINT 16#1 turn on debugging info recording SOCKET_SO_ACCEPTCONN DINT 16#2 socket has had listen() SOCKET_SO_REUSEADDR DINT 16#4 allow local address reuse SOCKET_SO_KEEPALIVE DINT 16#8 keep connections alive SOCKET_SO_DONTROUTE DINT 16#10 just use interface addresses SOCKET_SO_BROADCAST DINT 16#20 permit sending of broadcast msgs SOCKET_SO_USELOOPBACK DINT 16#40 bypass hardware when possible SOCKET_SO_LINGER DINT 16#80 linger on close if data present SOCKET_SO_OOBINLINE DINT 16#100 leave received OOB data in line SOCKET_SO_REUSEPORT DINT 16#200 allow local address & port reuse SOCKET_SO_SNDBUF DINT 16#1001 send buffer size SOCKET_SO_RCVBUF DINT 16#1002 receive buffer size SOCKET_SO_SNDLOWAT DINT 16#1003 send low-water mark SOCKET_SO_RCVLOWAT DINT 16#1004 receive low-water mark SOCKET_SO_SNDTIMEO DINT 16#1005 send timeout SOCKET_SO_RCVTIMEO DINT 16#1006 receive timeout SOCKET_SO_ERROR DINT 16#1007 get error status and clear SOCKET_SO_TYPE DINT 16#1008 get socket type SOCKET_SO_PROTOTYPE DINT 16#1009 get/set protocol type SOCKET_TCP_NODELAY DINT 16#1 don’t delay send to coalesce packets SOCKET_TCP_MAXSEG DINT 16#2 set maximum segment size SOCKET_STREAM DINT 1 stream socket SOCKET_DGRAM DINT 2 datagram socket SOCKET_RAW DINT 3 raw-protocol interface SOCKET_RDM DINT 4 reliably-delivered message SOCKET_SEQPACKET DINT 5 sequenced packet stream SOCKET_INADDR_ANY UDINT 16#0 Inet address definitions SOCKET_INADDR_LOOPBACK UDINT 16#7F000001 SOCKET_INADDR_BROADCAST UDINT 16#FFFFFFFF SOCKET_INADDR_NONE UDINT 16#FFFFFFFF SOCKET_IPPROTO_IP DINT 0 dummy for IP SOCKET_IPPROTO_ICMP DINT 1 control message protocol SOCKET_IPPROTO_IGMP DINT 2 group management protocol SOCKET_IPPROTO_GGP DINT 3 gateway^2 (deprecated) SOCKET_IPPROTO_TCP DINT 6 tcp SOCKET_IPPROTO_PUP DINT 12 pup SOCKET_IPPROTO_UDP DINT 17 user datagram protocol SOCKET_IPPROTO_IDP DINT 22 xns idp SOCKET_IPPROTO_ND DINT 77 UNOFFICIAL net disk proto SOCKET_IPPROTO_RAW DINT 255 raw IP packet SOCKET_IPPROTO_MAX DINT 256 SOCKET_MSG_OOB DINT 16#1 process out-of-band data SOCKET_MSG_PEEK DINT 16#2 peek at incoming message SOCKET_MSG_DONTROUTE DINT 16#4 send without using routing tables SOCKET_FIONREAD DINT 1 get num chars available to read SOCKET_FIONBIO DINT 2 set to non-blocking SOCKET_FD_SETSIZE DINT 64 For SysSockSelect() descriptors MAX_SOCKET_FD_SETSIZE DINT 63

POUs ¶ SysSockAccept (Function) SysSockBind (Function) SysSockClose (Function) SysSockConnect (Function) SysSockCreate (Function) SysSockGetHostByName (Function) SysSockGetHostName (Function) SysSockGetLastError (FunctionBlock) SysSockGetLastErrorSync (Function) SysSockGetOption (Function) SysSockHtonl (Function) SysSockHtons (Function) SysSockInetAddr (Function) SysSockInetNtoa (Function) SysSockIoctl (Function) SysSockListen (Function) SysSockNtohl (Function) SysSockNtohs (Function) SysSockSelect (Function) SysSockSetIPAddress (Function) SysSockSetOption (Function) SysSockShutdown (Function) TCP specific SysSockRecv (Function) SysSockSend (Function) UDP specific SysSockRecvFrom (Function) SysSockSendTo (Function)

SysSockAccept (FUN) ¶ FUNCTION SysSockAccept : DINT InOut: Scope Name Type Comment Return SysSockAccept DINT Input diSocket DINT pSockAddr DWORD Address of SocketAddress (SOCKADDRESS) piSockAddrSize DWORD Address of socket address size (DINT)

SysSockBind (FUN) ¶ FUNCTION SysSockBind : BOOL InOut: Scope Name Type Comment Return SysSockBind BOOL Input diSocket DINT pSockAddr DWORD Address of SocketAddress (SOCKADDRESS) diSockAddrSize DINT Size of socket address

SysSockClose (FUN) ¶ FUNCTION SysSockClose : BOOL InOut: Scope Name Type Return SysSockClose BOOL Input diSocket DINT

SysSockConnect (FUN) ¶ FUNCTION SysSockConnect : BOOL InOut: Scope Name Type Comment Return SysSockConnect BOOL Input diSocket DINT pSockAddr DWORD Address of SocketAddress (SOCKADDRESS) diSockAddrSize DINT Size of socket address