Unit 'Sockets' Package
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Reference for unit 'Sockets': Constants

AF_ALG

  

Address family: Algorithm sockets

AF_APPLETALK

  

Address family Appletalk DDP

AF_ASH

  

Address family: Ash

AF_ATMPVC

  

Address family: ATM PVCs

AF_ATMSVC

  

Address family: ATM SVCs

AF_AX25

  

Address family Amateur Radio AX.25

AF_BLUETOOTH

  

Address family: Bluetooth sockets

AF_BRIDGE

  

Address family Multiprotocol bridge

AF_CAIF

  

Address family: CAIF (Application CPU interface) sockets

AF_CAN

  

Address family: CAN (Controller Area Network) sockets

AF_DECnet

  

Address family: Reserved for DECnet project.

AF_ECONET

  

Address family: Acorn Econet

AF_IB

  

Address family: IB (Infiniband) sockets

AF_IEEE802154

  

Address family: IEEE802154 sockets

AF_INET

  

Address family Internet IP Protocol

AF_INET6

  

Address family IP version 6

AF_IPX

  

Address family Novell IPX

AF_IRDA

  

Address family: IRDA sockets

AF_ISDN

  

Address family: ?

AF_IUCV

  

Address family: IUCV (Inter User Communication Vehicle) sockets

AF_KCM

  

Address family: KCM (Kernel Connection Multiplexor) sockets

AF_KEY

  

Address family: PF_KEY key management API

AF_LLC

  

Address family: Linux LLC

AF_LOCAL

  

Address family: Unix socket

AF_MAX

  

Address family Maximum value

AF_MPLS

  

Address family: MPLS (Multiprotocol Label Switching) sockets

AF_NETBEUI

  

Address family: Reserved for 802.2LLC project

AF_NETLINK

  

Address family: ?

AF_NETROM

  

Address family Amateur radio NetROM

AF_NFC

  

Address family: NFC (Near Field Communication) sockets

AF_PACKET

  

Address family: Packet family

AF_PHONET

  

Address family: Phonet sockets

AF_PPPOX

  

Address family: PPPoX sockets

AF_QIPCRTR

  

Address family: QIPCRTR (Qualcomm IPC Router) sockets

AF_RDS

  

Address Family: RDS (Reliable Datagram Sockets) sockets

AF_ROSE

  

Address family: Amateur Radio X.25 PLP

AF_ROUTE

  

Address family: Alias to emulate 4.4BSD.

AF_RXRPC

  

Address family: RxRPC sockets

AF_SECURITY

  

Address family: Security callback pseudo AF

AF_SMC

  

Address family: SMC (Shared Memory Communication) sockets

AF_SNA

  

Address family: Linux SNA project

AF_TIPC

  

Address family: TIPC sockets

AF_UNIX

  

Address family Unix domain sockets

AF_UNSPEC

  

Address family Not specified

AF_VSOCK

  

Address family: VSOCK (hypervisor) sockets

AF_WANPIPE

  

Address family: Wanpipe API Sockets

AF_X25

  

Address family Reserved for X.25 project

AF_XDP

  

Address family: XDP (Express Data Path) sockets

EsockADDRINUSE

  

Error number when socket address is already in use

EsockEACCESS

  

Access forbidden error

EsockEBADF

  

Alias: bad file descriptor

EsockEFAULT

  

Alias: an error occurred

EsockEINTR

  

Alias : operation interrupted

EsockEINVAL

  

Alias: Invalid value specified

EsockEMFILE

  

Error code ?

EsockEMSGSIZE

  

Wrong message size error

EsockENOBUFS

  

No buffer space available error

EsockENOTCONN

  

Not connected error

EsockENOTSOCK

  

File descriptor is not a socket error

EsockEPROTONOSUPPORT

  

Protocol not supported error

EsockEWOULDBLOCK

  

Operation would block error

INADDR_ANY

  

A bitmask matching any IP address on the local machine.

INADDR_NONE

  

A bitmask matching no valid IP address

IPPROTO_AH

  

authentication header.

IPPROTO_COMP

  

Compression Header Protocol.

IPPROTO_DSTOPTS

  

IPv6 destination options.

IPPROTO_EGP

  

Exterior Gateway Protocol.

IPPROTO_ENCAP

  

Encapsulation Header.

IPPROTO_ESP

  

encapsulating security payload.

IPPROTO_FRAGMENT

  

IPv6 fragmentation header.

IPPROTO_GRE

  

General Routing Encapsulation.

IPPROTO_HOPOPTS

  

IPv6 Hop-by-Hop options.

IPPROTO_ICMP

  

Internet Control Message Protocol.

IPPROTO_ICMPV6

  

ICMPv6.

IPPROTO_IDP

  

XNS IDP protocol.

IPPROTO_IGMP

  

Internet Group Management Protocol.

IPPROTO_IP

  

Dummy protocol for TCP.

IPPROTO_IPIP

  

IPIP tunnels (older KA9Q tunnels use 94).

IPPROTO_IPV6

  

IPv6 header.

IPPROTO_MAX

  

Maximum value for IPPROTO options

IPPROTO_MTP

  

Multicast Transport Protocol.

IPPROTO_NONE

  

IPv6 no next header.

IPPROTO_PIM

  

Protocol Independent Multicast.

IPPROTO_PUP

  

PUP protocol.

IPPROTO_RAW

  

Raw IP packets.

IPPROTO_ROUTING

  

IPv6 routing header.

IPPROTO_RSVP

  

Reservation Protocol.

IPPROTO_SCTP

  

Stream Control Transmission Protocol.

IPPROTO_TCP

  

Transmission Control Protocol.

IPPROTO_TP

  

SO Transport Protocol Class 4.

IPPROTO_UDP

  

User Datagram Protocol.

IPV6_ADDRFORM

  

Change the IPV6 address into a different address family. Deprecated

IPV6_ADD_MEMBERSHIP

  

Undocumented Getsockopt option ?

IPV6_AUTHHDR

  

GetSockOpt/SetSockopt: Deliver authentication header messages

IPV6_CHECKSUM

  

Undocumented Getsockopt option ?

IPV6_DROP_MEMBERSHIP

  

Undocumented Getsockopt option ?

IPV6_DSTOPTS

  

Deliver destination option control messages

IPV6_HOPLIMIT

  

Deliver an integer containing the HOP count

IPV6_HOPOPTS

  

Deliver hop option control messages

IPV6_IPSEC_POLICY

  

Undocumented Getsockopt option ?

IPV6_JOIN_ANYCAST

  

Undocumented Getsockopt option ?

IPV6_JOIN_GROUP

  

GetSockOpt/SetSockopt: Control membership (join group) in multicast groups

IPV6_LEAVE_ANYCAST

  

Undocumented Getsockopt option ?

IPV6_LEAVE_GROUP

  

GetSockOpt/SetSockopt: Control membership (leave group)in multicast groups

IPV6_MTU

  

GetSockOpt/SetSockopt: Get/Set the MTU for the socket

IPV6_MTU_DISCOVER

  

GetSockOpt/SetSockopt: Get/Set Control path MTU Discovery on the socket

IPV6_MULTICAST_HOPS

  

GetSockOpt/SetSockopt: Get/Set the multicast hop limit.

IPV6_MULTICAST_IF

  

GetSockOpt/SetSockopt: Get/Set device for multicast packages on the socket.

IPV6_MULTICAST_LOOP

  

GetSockOpt/SetSockopt: Control whether socket sees multicast packages that it has sent itself

IPV6_NEXTHOP

  

sendmsg: set next hop for IPV6 datagram

IPV6_PKTINFO

  

Change delivery options for incoming IPV6 datagrams

IPV6_PKTOPTIONS

  

Undocumented Getsockopt option ?

IPV6_PMTUDISC_DO

  

Always DF.

IPV6_PMTUDISC_DONT

  

Never send DF frames.

IPV6_PMTUDISC_WANT

  

Use per route hints.

IPV6_RECVERR

  

GetSockOpt/SetSockopt: Control receiving of asynchronous error options

IPV6_ROUTER_ALERT

  

GetSockOpt/SetSockopt: Get/Set Pass all forwarded packets containing router alert option

IPV6_RTHDR

  

Deliver routing header control messages

IPV6_RTHDR_LOOSE

  

Hop doesn't need to be neighbour.

IPV6_RTHDR_STRICT

  

Hop must be a neighbour.

IPV6_RTHDR_TYPE_0

  

IPv6 Routing header type 0.

IPV6_RXDSTOPTS

  

Undocumented Getsockopt option ?

IPV6_RXHOPOPTS

  

Undocumented Getsockopt option ?

IPV6_RXSRCRT

  

Undocumented Getsockopt option ?

IPV6_UNICAST_HOPS

  

GetSockOpt/SetSockopt: Get/Set unicast hop limit

IPV6_V6ONLY

  

GetSockOpt/SetSockopt: Handle IPV6 connections only

IPV6_XFRM_POLICY

  

Undocumented Getsockopt option ?

IPX_TYPE

  

IPX type

IP_ADD_MEMBERSHIP

  

add an IP group membership

IP_ADD_SOURCE_MEMBERSHIP

  

join source group

IP_BLOCK_SOURCE

  

block data from source

IP_DEFAULT_MULTICAST_LOOP

  

Undocumented ?

IP_DEFAULT_MULTICAST_TTL

  

Undocumented ?

IP_DROP_MEMBERSHIP

  

drop an IP group membership

IP_DROP_SOURCE_MEMBERSHIP

  

leave source group

IP_HDRINCL

  

Header is included with data.

IP_MAX_MEMBERSHIPS

  

Maximum group memberships for multicast messages

IP_MSFILTER

  

Undocumented ?

IP_MTU_DISCOVER

  

Undocumented ?

IP_MULTICAST_IF

  

set/get IP multicast i/f

IP_MULTICAST_LOOP

  

set/get IP multicast loopback

IP_MULTICAST_TTL

  

set/get IP multicast ttl

IP_OPTIONS

  

IP per-packet options.

IP_PKTINFO

  

Undocumented ?

IP_PKTOPTIONS

  

Undocumented ?

IP_PMTUDISC

  

Undocumented ?

IP_PMTUDISC_DO

  

Always DF.

IP_PMTUDISC_DONT

  

Never send DF frames.

IP_PMTUDISC_WANT

  

Use per route hints.

IP_RECVERR

  

Undocumented ?

IP_RECVOPTS

  

Receive all IP options w/datagram.

IP_RECVRETOPTS

  

Receive IP options for response.

IP_RECVTOS

  

Undocumented ?

IP_RECVTTL

  

Undocumented ?

IP_RETOPTS

  

Set/get IP per-packet options.

IP_ROUTER_ALERT

  

Undocumented ?

IP_TOS

  

IP type of service and precedence.

IP_TTL

  

IP time to live.

IP_UNBLOCK_SOURCE

  

unblock data from source

MCAST_BLOCK_SOURCE

  

block from given group

MCAST_EXCLUDE

  

Undocumented ?

MCAST_INCLUDE

  

Undocumented ?

MCAST_JOIN_GROUP

  

join any-source group

MCAST_JOIN_SOURCE_GROUP

  

join source-spec gruoup

MCAST_LEAVE_GROUP

  

leave any-source group

MCAST_LEAVE_SOURCE_GROUP

  

leave source-spec group

MCAST_MSFILTER

  

Undocumented ?

MCAST_UNBLOCK_SOURCE

  

unblock from given group

MSG_BATCH

  

sendmmsg: more messages coming

MSG_CMSG_CLOEXEC

  

Set close_on_exec for file descriptor received through SCM_RIGHTS

MSG_CMSG_COMPAT

  

This message needs 32 bit fixups

MSG_CONFIRM

  

Send flags: Conform connection

MSG_CTRUNC

  

Receive flags: Control Data was discarded (buffer too small)

MSG_DONTROUTE

  

Send flags: don't use gateway

MSG_DONTWAIT

  

Receive flags: Non-blocking operation request.

MSG_EOF

  

Alias for MSG_FIN

MSG_EOR

  

Receive flags: End of record

MSG_ERRQUERE

  

Receive flags: ?

MSG_FASTOPEN

  

Send data in TCP SYN

MSG_FIN

  

Receive flags: ?

MSG_MORE

  

Receive flags: ?

MSG_NOSIGNAL

  

Receive flags: Suppress SIG_PIPE signal.

MSG_NO_SHARED_FRAGS

  

sendpage internal : page frags are not shared

MSG_OOB

  

Receive flags: receive out-of-band data.

MSG_PEEK

  

Receive flags: peek at data, don't remove from buffer.

MSG_PROBE

  

Do not send. Only probe path f.e. for MTU

MSG_PROXY

  

Receive flags: ?

MSG_RST

  

Receive flags: ?

MSG_SENDPAGE_DECRYPTED

  

sendpage() internal : page may carry plain text and require encryption

MSG_SENDPAGE_NOPOLICY

  

sendpage internal : do not apply policy

MSG_SENDPAGE_NOTLAST

  

sendpage internal : not the last page

MSG_SYN

  

Receive flags: ?

MSG_TRUNC

  

Receive flags: packet Data was discarded (buffer too small)

MSG_TRYHARD

  

Receive flags: ?

MSG_WAITALL

  

Receive flags: Wait till operation completed.

MSG_WAITFORONE

  

recvmmsg(): block until 1+ packets avail

MSG_ZEROCOPY

  

Use user data in kernel path

NoAddress

  

Constant indicating invalid (no) network address.

NoAddress6

  

Constant indicating invalid (no) IPV6 network address.

NoNet

  

Constant indicating invalid (no) network address.

NoNet6

  

Constant indicating invalid (no) IPV6 network address.

PF_ALG

  

Protocol family: Algorithm sockets

PF_APPLETALK

  

Protocol family: Appletalk DDP

PF_ASH

  

Protocol family: Ash

PF_ATMPVC

  

Protocol family: ATM PVCs

PF_ATMSVC

  

Protocol family: ATM SVCs

PF_AX25

  

Protocol family: Amateur Radio AX.25

PF_BLUETOOTH

  

Protocol family: Bluetooth sockets

PF_BRIDGE

  

Protocol family: Multiprotocol bridge

PF_CAIF

  

Protocol family: CAIF (Application CPU interface) sockets

PF_CAN

  

Protocol family: CAN (Controller Area Network) sockets

PF_DECnet

  

Protocol Family: DECNET project

PF_ECONET

  

Protocol family: Acorn Econet

PF_IB

  

Protocol family: IB (InfiniBand) sockets

PF_IEEE802154

  

Protocol family: IEEE802154 sockets

PF_INET

  

Protocol family: Internet IP Protocol

PF_INET6

  

Protocol family: IP version 6

PF_IPX

  

Protocol family: Novell IPX

PF_IRDA

  

Protocol family: IRDA sockets

PF_ISDN

  

Protocol Family: ?

PF_IUCV

  

Protocol family: IUCV (Inter User Communication Vehicle) sockets

PF_KCM

  

Protocol family: KCM (Kernel Connection Multiplexor) sockets

PF_KEY

  

Protocol family: Key management API

PF_LLC

  

Protocol family: Linux LLC

PF_LOCAL

  

Protocol family: Unix socket

PF_MAX

  

Protocol family: Maximum value

PF_MPLS

  

Protocol family: MPLS (Multiprotocol Label Switching

PF_NETBEUI

  

Protocol family: Reserved for 802.2LLC project

PF_NETLINK

  

Protocol family: ?

PF_NETROM

  

Protocol family:Amateur radio NetROM

PF_NFC

  

Protocol family: NFC (Near Field Communication) sockets

PF_PACKET

  

Protocol family: Packet family

PF_PHONET

  

Protocol family: RxRPC sockets

PF_PPPOX

  

Protocol family: PPPoX sockets

PF_QIPCRTR

  

Protocol family: IPCRTR (Qualcomm IPC Router) sockets

PF_RDS

  

Protocol family: RDS (Reliable Datagram Sockets) sockets

PF_ROSE

  

Protocol family: Amateur Radio X.25 PLP

PF_ROUTE

  

Protocol Family: ?

PF_RXRPC

  

Protocol family: RxRPC sockets

PF_SECURITY

  

Protocol family: Security callback pseudo PF

PF_SMC

  

Protocol family: SMC (Shared Memory Communication) sockets

PF_SNA

  

Protocol Family: Linux SNA project

PF_TIPC

  

Protocol family: TIPC sockets

PF_UNIX

  

Protocol family: Unix domain sockets

PF_UNSPEC

  

Protocol family: Unspecified

PF_VSOCK

  

Protocol family: VSOCK (hypervisor) sockets

PF_WANPIPE

  

Protocol family: Wanpipe API Sockets

PF_X25

  

Protocol family: Reserved for X.25 project

PF_XDP

  

Protocol family: XDP (Express Data Path) sockets

SCM_CREDENTIALS

  

socket control messages : credentials

SCM_RIGHTS

  

socket control messages : access rights

SCM_SECURITY

  

socket control messages : security label

SCM_SRCRT

  

Undocumented Getsockopt option ?

SCM_TIMESTAMP

  

Socket option: ?

SHUT_RD

  

Shutdown read part of full duplex socket

SHUT_RDWR

  

Shutdown read and write part of full duplex socket

SHUT_WR

  

Shutdown write part of full duplex socket

SOCK_DGRAM

  

Type of socket: datagram (conn.less) socket (UDP)

SOCK_MAXADDRLEN

  

Maximum socket address length for Bind call.

SOCK_RAW

  

Type of socket: raw socket

SOCK_RDM

  

Type of socket: reliably-delivered message

SOCK_SEQPACKET

  

Type of socket: sequential packet socket

SOCK_STREAM

  

Type of socket: stream (connection) type socket (TCP)

SOL_AAL

  

Socket level: AAL

SOL_ALG

  

Socket level: Algorithm socket

SOL_ATALK

  

Socket level: Apple talk

SOL_ATM

  

Socket level: ATM

SOL_AX25

  

Socket level: AX25

SOL_BLUETOOTH

  

Socket level: BlueTooth

SOL_CAIF

  

Socket level: CAIF (Application CPU interface)

SOL_DCCP

  

Socket level: DCCP

SOL_DECNET

  

Socket level: DECnet

SOL_ICMPV6

  

Socket level values for IPv6: ICMPV6

SOL_IP

  

Undocumented ?

SOL_IPV6

  

Socket level values for IPv6: IPV6

SOL_IPX

  

Socket level: IPX

SOL_IRDA

  

Socket level: IRDA

SOL_IUCV

  

Socket level: IUCV (Inter User Communication Vehicle)

SOL_KCM

  

Socket level: KCM (Kernel Connection Multiplexor) sockets

SOL_LLC

  

Socket level: LLC

SOL_NETBEUI

  

Socket level: NETBEUI

SOL_NETLINK

  

Socket level: NETLink

SOL_NETROM

  

Socket level: Net ROM

SOL_NFC

  

Socket level: NFC (Near Field Communication) socket

SOL_PACKET

  

Socket level: Packet

SOL_PNPIPE

  

Socket level: PNPIPE

SOL_PPPOL2TP

  

Socket level: PPPOL2TP

SOL_RAW

  

Socket level: raw socket

SOL_RDS

  

Socket level: RDS (Reliable Datagram Socket)

SOL_ROSE

  

Socket level: ROSE

SOL_RXRPC

  

Socket level: RxRPC

SOL_SCTP

  

Socket level: SCTP

SOL_SOCKET

  

Socket option level: Socket level

SOL_TCP

  

Socket level: TCP

SOL_TIPC

  

Socket level: TIPC

SOL_TLS

  

Socket level: TLS

SOL_UDP

  

Socket level: UDP

SOL_UDPLITE

  

Socket level: UDP Lite

SOL_X25

  

Socket level: X25

SOL_XDP

  

Socket level: XDP (Express Data Path) sockets

SOMAXCONN

  

Maximum queue length specifiable by listen.

SO_ACCEPTCONN

  

Socket option: ?

SO_ATTACH_FILTER

  

Socket option: ?

SO_BINDTODEVICE

  

Socket option: ?

SO_BROADCAST

  

Socket option: Broadcast

SO_BSDCOMPAT

  

Socket option: ?

SO_DEBUG

  

Socket option level: debug

SO_DETACH_FILTER

  

Socket option: ?

SO_DONTROUTE

  

Socket option: Don't route

SO_ERROR

  

Socket option: Error

SO_KEEPALIVE

  

Socket option: keep alive

SO_LINGER

  

Socket option: ?

SO_NO_CHECK

  

Socket option: ?

SO_OOBINLINE

  

Socket option: ?

SO_PASSCRED

  

Socket option: ?

SO_PEERCRED

  

Socket option: ?

SO_PEERNAME

  

Socket option: ?

SO_PRIORITY

  

Socket option: ?

SO_RCVBUF

  

Socket option: receive buffer

SO_RCVLOWAT

  

Socket option: ?

SO_RCVTIMEO

  

Socket option: ?

SO_REUSEADDR

  

Socket option: Reuse address

SO_REUSEPORT

  

Socket Option : reuse port

SO_SECURITY_AUTHENTICATION

  

Socket option: ?

SO_SECURITY_ENCRYPTION_NETWORK

  

Socket option: ?

SO_SECURITY_ENCRYPTION_TRANSPORT

  

Socket option: ?

SO_SNDBUF

  

Socket option: Send buffer

SO_SNDLOWAT

  

Socket option: ?

SO_SNDTIMEO

  

Socket option: ?

SO_TIMESTAMP

  

Socket option: ?

SO_TYPE

  

Socket option: Type

S_IN

  

Input socket in socket pair.

S_OUT

  

Output socket in socket pair

TCP_CONGESTION

  

Get/set the congestion-control algorithm for this socket

TCP_CORK

  

Get/Set CORK algorithm: Send only complete packets

TCP_DEFER_ACCEPT

  

Get/Set deferred accept on server socket

TCP_INFO

  

Get TCP connection information (Linux only)

TCP_KEEPCNT

  

Get/Set retry count for unacknowledged KEEPALIVE transmissions.

TCP_KEEPIDLE

  

Get/Set inactivity interval between KEEPALIVE transmissions.

TCP_KEEPINTVL

  

Get/Set retry interval for unacknowledged KEEPALIVE transmissions.

TCP_LINGER2

  

Get/Set Linger2 flag

TCP_MAXSEG

  

Get/Set Maximum segment size

TCP_MD5SIG

  

Get/Set TCP MD5 signature option

TCP_NODELAY

  

Get/Set No delay flag: disable Nagle algorithm

TCP_QUICKACK

  

Get/Set quick ACK packet option.

TCP_SYNCNT

  

Get/Set number of SYN packets to send before giving up on connection establishment

TCP_WINDOW_CLAMP

  

Get/Set maximum packet size

UDP_CORK

  

Get/Set UDP CORK algorithm on datagram sockets

UDP_ENCAP

  

Get/Set UDP encapsulation flag for IPSec datagram sockets

UDP_ENCAP_ESPINUDP

  

? Undocumented datagram option, IPSec related

UDP_ENCAP_ESPINUDP_NON_IKE

  

? Undocumented datagram option, IPSec related

UDP_ENCAP_L2TPINUDP

  

? Undocumented datagram option, IPSec related


Documentation generated on: Sep 29 2022