Module: Socket::Constants

Relationships & Source Files
Defined in:	ext/socket/constdefs.c

Overview

Constants provides socket-related constants. All possible socket constants are listed in the documentation but they may not all be present on your platform.

If the underlying platform doesn’t define a constant the corresponding Ruby constant is not defined.

Constant Summary

AF_APPLETALK =

AppleTalk protocol

# File 'ext/socket/constdefs.c', line 2415
```
INTEGER2NUM(AF_APPLETALK)
```
AF_ATM =

Asynchronous Transfer Mode

# File 'ext/socket/constdefs.c', line 2739
```
INTEGER2NUM(AF_ATM)
```
AF_AX25 =

AX.25 protocol

# File 'ext/socket/constdefs.c', line 2391
```
INTEGER2NUM(AF_AX25)
```
AF_CCITT =

CCITT (now ITU-T) protocols

# File 'ext/socket/constdefs.c', line 2535
```
INTEGER2NUM(AF_CCITT)
```
AF_CHAOS =

MIT CHAOS protocols

# File 'ext/socket/constdefs.c', line 2463
```
INTEGER2NUM(AF_CHAOS)
```
AF_CNT =

Computer Network Technology

# File 'ext/socket/constdefs.c', line 2643
```
INTEGER2NUM(AF_CNT)
```
AF_COIP =

Connection-oriented IP

# File 'ext/socket/constdefs.c', line 2631
```
INTEGER2NUM(AF_COIP)
```
AF_DATAKIT =

Datakit protocol

# File 'ext/socket/constdefs.c', line 2523
```
INTEGER2NUM(AF_DATAKIT)
```
AF_DEC =

DECnet protocol

# File 'ext/socket/constdefs.c', line 2559
```
INTEGER2NUM(AF_DEC)
```
AF_DLI =

DEC Direct ::Data Link Interface protocol

# File 'ext/socket/constdefs.c', line 2571
```
INTEGER2NUM(AF_DLI)
```
AF_E164 =

CCITT (ITU-T) E.164 recommendation

# File 'ext/socket/constdefs.c', line 2787
```
INTEGER2NUM(AF_E164)
```
AF_ECMA =

European Computer Manufacturers protocols

# File 'ext/socket/constdefs.c', line 2511
```
INTEGER2NUM(AF_ECMA)
```
AF_HYLINK =

NSC Hyperchannel protocol

# File 'ext/socket/constdefs.c', line 2595
```
INTEGER2NUM(AF_HYLINK)
```
AF_IMPLINK =

ARPANET IMP protocol

# File 'ext/socket/constdefs.c', line 2439
```
INTEGER2NUM(AF_IMPLINK)
```
AF_INET =

IPv4 protocol

# File 'ext/socket/constdefs.c', line 2351
```
INTEGER2NUM(AF_INET)
```
AF_INET6 =

IPv6 protocol

# File 'ext/socket/constdefs.c', line 2364
```
INTEGER2NUM(AF_INET6)
```
AF_IPX =

IPX protocol

# File 'ext/socket/constdefs.c', line 2403
```
INTEGER2NUM(AF_IPX)
```
AF_ISDN =

Integrated Services Digital Network

# File 'ext/socket/constdefs.c', line 2679
```
INTEGER2NUM(AF_ISDN)
```
AF_ISO =

ISO Open Systems Interconnection protocols

# File 'ext/socket/constdefs.c', line 2487
```
INTEGER2NUM(AF_ISO)
```
AF_LAT =

Local Area Transport protocol

# File 'ext/socket/constdefs.c', line 2583
```
INTEGER2NUM(AF_LAT)
```
AF_LINK =

Link layer interface

# File 'ext/socket/constdefs.c', line 2619
```
INTEGER2NUM(AF_LINK)
```
AF_LOCAL =

Host-internal protocols

# File 'ext/socket/constdefs.c', line 2427
```
INTEGER2NUM(AF_LOCAL)
```
AF_MAX =

Maximum address family for this platform

# File 'ext/socket/constdefs.c', line 2763
```
INTEGER2NUM(AF_MAX)
```
AF_NATM =

Native ATM access

# File 'ext/socket/constdefs.c', line 2691
```
INTEGER2NUM(AF_NATM)
```
AF_NDRV =

Network driver raw access

# File 'ext/socket/constdefs.c', line 2667
```
INTEGER2NUM(AF_NDRV)
```
AF_NETBIOS =

NetBIOS

# File 'ext/socket/constdefs.c', line 2715
```
INTEGER2NUM(AF_NETBIOS)
```
AF_NETGRAPH =

Netgraph sockets

# File 'ext/socket/constdefs.c', line 2751
```
INTEGER2NUM(AF_NETGRAPH)
```
AF_NS =

XEROX NS protocols

# File 'ext/socket/constdefs.c', line 2475
```
INTEGER2NUM(AF_NS)
```
AF_OSI =

ISO Open Systems Interconnection protocols

# File 'ext/socket/constdefs.c', line 2499
```
INTEGER2NUM(AF_OSI)
```
AF_PACKET =

Direct link-layer access

# File 'ext/socket/constdefs.c', line 2775
```
INTEGER2NUM(AF_PACKET)
```
AF_PPP =

Point-to-Point Protocol

# File 'ext/socket/constdefs.c', line 2727
```
INTEGER2NUM(AF_PPP)
```
AF_PUP =

PARC Universal Packet protocol

# File 'ext/socket/constdefs.c', line 2451
```
INTEGER2NUM(AF_PUP)
```
AF_ROUTE =

Internal routing protocol

# File 'ext/socket/constdefs.c', line 2607
```
INTEGER2NUM(AF_ROUTE)
```
AF_SIP =

Simple Internet Protocol

# File 'ext/socket/constdefs.c', line 2655
```
INTEGER2NUM(AF_SIP)
```
AF_SNA =

IBM SNA protocol

# File 'ext/socket/constdefs.c', line 2547
```
INTEGER2NUM(AF_SNA)
```
AF_SYSTEM =
# File 'ext/socket/constdefs.c', line 2703
```
INTEGER2NUM(AF_SYSTEM)
```
AF_UNIX =

UNIX sockets

# File 'ext/socket/constdefs.c', line 2379
```
INTEGER2NUM(AF_UNIX)
```
AF_UNSPEC =

Unspecified protocol, any supported address family

# File 'ext/socket/constdefs.c', line 2339
```
INTEGER2NUM(AF_UNSPEC)
```
AI_ADDRCONFIG =

Accept only if any address is assigned

# File 'ext/socket/constdefs.c', line 4209
```
INTEGER2NUM(AI_ADDRCONFIG)
```
AI_ALL =

Allow all addresses

# File 'ext/socket/constdefs.c', line 4197
```
INTEGER2NUM(AI_ALL)
```
AI_CANONNAME =

Fill in the canonical name

# File 'ext/socket/constdefs.c', line 4173
```
INTEGER2NUM(AI_CANONNAME)
```
AI_DEFAULT =

Default flags for getaddrinfo

# File 'ext/socket/constdefs.c', line 4221
```
INTEGER2NUM(AI_DEFAULT)
```
AI_MASK =

Valid flag mask for getaddrinfo (not for application use)

# File 'ext/socket/constdefs.c', line 4191
```
INTEGER2NUM(AI_MASK)
```
AI_NUMERICHOST =

Prevent host name resolution

# File 'ext/socket/constdefs.c', line 4179
```
INTEGER2NUM(AI_NUMERICHOST)
```
AI_NUMERICSERV =

Prevent service name resolution

# File 'ext/socket/constdefs.c', line 4185
```
INTEGER2NUM(AI_NUMERICSERV)
```
AI_PASSIVE =

Get address to use with bind()

# File 'ext/socket/constdefs.c', line 4167
```
INTEGER2NUM(AI_PASSIVE)
```
AI_V4MAPPED =

Accept IPv4-mapped IPv6 addresses

# File 'ext/socket/constdefs.c', line 4215
```
INTEGER2NUM(AI_V4MAPPED)
```
AI_V4MAPPED_CFG =

Accept IPv4 mapped addresses if the kernel supports it

# File 'ext/socket/constdefs.c', line 4203
```
INTEGER2NUM(AI_V4MAPPED_CFG)
```
EAI_ADDRFAMILY =

Address family for hostname not supported

# File 'ext/socket/constdefs.c', line 4077
```
INTEGER2NUM(EAI_ADDRFAMILY)
```
EAI_AGAIN =

Temporary failure in name resolution

# File 'ext/socket/constdefs.c', line 4083
```
INTEGER2NUM(EAI_AGAIN)
```
EAI_BADFLAGS =

Invalid flags

# File 'ext/socket/constdefs.c', line 4089
```
INTEGER2NUM(EAI_BADFLAGS)
```
EAI_BADHINTS =

Invalid value for hints

# File 'ext/socket/constdefs.c', line 4149
```
INTEGER2NUM(EAI_BADHINTS)
```
EAI_FAIL =

Non-recoverable failure in name resolution

# File 'ext/socket/constdefs.c', line 4095
```
INTEGER2NUM(EAI_FAIL)
```
EAI_FAMILY =

Address family not supported

# File 'ext/socket/constdefs.c', line 4101
```
INTEGER2NUM(EAI_FAMILY)
```
EAI_MAX =

Maximum error code from getaddrinfo

# File 'ext/socket/constdefs.c', line 4161
```
INTEGER2NUM(EAI_MAX)
```
EAI_MEMORY =

Memory allocation failure

# File 'ext/socket/constdefs.c', line 4107
```
INTEGER2NUM(EAI_MEMORY)
```
EAI_NODATA =

No address associated with hostname

# File 'ext/socket/constdefs.c', line 4113
```
INTEGER2NUM(EAI_NODATA)
```
EAI_NONAME =

Hostname nor servname, or not known

# File 'ext/socket/constdefs.c', line 4119
```
INTEGER2NUM(EAI_NONAME)
```
EAI_OVERFLOW =

Argument buffer overflow

# File 'ext/socket/constdefs.c', line 4125
```
INTEGER2NUM(EAI_OVERFLOW)
```
EAI_PROTOCOL =

Resolved protocol is unknown

# File 'ext/socket/constdefs.c', line 4155
```
INTEGER2NUM(EAI_PROTOCOL)
```
EAI_SERVICE =

Servname not supported for socket type

# File 'ext/socket/constdefs.c', line 4131
```
INTEGER2NUM(EAI_SERVICE)
```
EAI_SOCKTYPE =

::Socket type not supported

# File 'ext/socket/constdefs.c', line 4137
```
INTEGER2NUM(EAI_SOCKTYPE)
```
EAI_SYSTEM =

System error returned in errno

# File 'ext/socket/constdefs.c', line 4143
```
INTEGER2NUM(EAI_SYSTEM)
```
IFF_802_1Q_VLAN =

802.1Q VLAN device

# File 'ext/socket/constdefs.c', line 4605
```
INTEGER2NUM(IFF_802_1Q_VLAN)
```
IFF_ALLMULTI =

receive all multicast packets

# File 'ext/socket/constdefs.c', line 4611
```
INTEGER2NUM(IFF_ALLMULTI)
```
IFF_ALTPHYS =

use alternate physical connection

# File 'ext/socket/constdefs.c', line 4617
```
INTEGER2NUM(IFF_ALTPHYS)
```
IFF_AUTOMEDIA =

auto media select active

# File 'ext/socket/constdefs.c', line 4623
```
INTEGER2NUM(IFF_AUTOMEDIA)
```
IFF_BONDING =

bonding master or slave

# File 'ext/socket/constdefs.c', line 4629
```
INTEGER2NUM(IFF_BONDING)
```
IFF_BRIDGE_PORT =

device used as bridge port

# File 'ext/socket/constdefs.c', line 4635
```
INTEGER2NUM(IFF_BRIDGE_PORT)
```
IFF_BROADCAST =

broadcast address valid

# File 'ext/socket/constdefs.c', line 4641
```
INTEGER2NUM(IFF_BROADCAST)
```
IFF_CANTCHANGE =

flags not changeable

# File 'ext/socket/constdefs.c', line 4947
```
INTEGER2NUM(IFF_CANTCHANGE)
```
IFF_CANTCONFIG =

unconfigurable using ioctl(2)

# File 'ext/socket/constdefs.c', line 4647
```
INTEGER2NUM(IFF_CANTCONFIG)
```
IFF_DEBUG =

turn on debugging

# File 'ext/socket/constdefs.c', line 4653
```
INTEGER2NUM(IFF_DEBUG)
```
IFF_DISABLE_NETPOLL =

disable netpoll at run-time

# File 'ext/socket/constdefs.c', line 4659
```
INTEGER2NUM(IFF_DISABLE_NETPOLL)
```
IFF_DONT_BRIDGE =

disallow bridging this ether dev

# File 'ext/socket/constdefs.c', line 4665
```
INTEGER2NUM(IFF_DONT_BRIDGE)
```
IFF_DORMANT =

driver signals dormant

# File 'ext/socket/constdefs.c', line 4671
```
INTEGER2NUM(IFF_DORMANT)
```
IFF_DRV_OACTIVE =

tx hardware queue is full

# File 'ext/socket/constdefs.c', line 4677
```
INTEGER2NUM(IFF_DRV_OACTIVE)
```
IFF_DRV_RUNNING =

resources allocated

# File 'ext/socket/constdefs.c', line 4683
```
INTEGER2NUM(IFF_DRV_RUNNING)
```
IFF_DYING =

interface is winding down

# File 'ext/socket/constdefs.c', line 4689
```
INTEGER2NUM(IFF_DYING)
```
IFF_DYNAMIC =

dialup device with changing addresses

# File 'ext/socket/constdefs.c', line 4695
```
INTEGER2NUM(IFF_DYNAMIC)
```
IFF_EBRIDGE =

ethernet bridging device

# File 'ext/socket/constdefs.c', line 4701
```
INTEGER2NUM(IFF_EBRIDGE)
```
IFF_ECHO =

echo sent packets

# File 'ext/socket/constdefs.c', line 4707
```
INTEGER2NUM(IFF_ECHO)
```
IFF_ISATAP =

ISATAP interface (RFC4214)

# File 'ext/socket/constdefs.c', line 4713
```
INTEGER2NUM(IFF_ISATAP)
```
IFF_LINK0 =

per link layer defined bit 0

# File 'ext/socket/constdefs.c', line 4719
```
INTEGER2NUM(IFF_LINK0)
```
IFF_LINK1 =

per link layer defined bit 1

# File 'ext/socket/constdefs.c', line 4725
```
INTEGER2NUM(IFF_LINK1)
```
IFF_LINK2 =

per link layer defined bit 2

# File 'ext/socket/constdefs.c', line 4731
```
INTEGER2NUM(IFF_LINK2)
```
IFF_LIVE_ADDR_CHANGE =

hardware address change when it’s running

# File 'ext/socket/constdefs.c', line 4737
```
INTEGER2NUM(IFF_LIVE_ADDR_CHANGE)
```
IFF_LOOPBACK =

loopback net

# File 'ext/socket/constdefs.c', line 4743
```
INTEGER2NUM(IFF_LOOPBACK)
```
IFF_LOWER_UP =

driver signals L1 up

# File 'ext/socket/constdefs.c', line 4749
```
INTEGER2NUM(IFF_LOWER_UP)
```
IFF_MACVLAN_PORT =

device used as macvlan port

# File 'ext/socket/constdefs.c', line 4755
```
INTEGER2NUM(IFF_MACVLAN_PORT)
```
IFF_MASTER =

master of a load balancer

# File 'ext/socket/constdefs.c', line 4761
```
INTEGER2NUM(IFF_MASTER)
```
IFF_MASTER_8023AD =

bonding master, 802.3ad.

# File 'ext/socket/constdefs.c', line 4767
```
INTEGER2NUM(IFF_MASTER_8023AD)
```
IFF_MASTER_ALB =

bonding master, balance-alb.

# File 'ext/socket/constdefs.c', line 4773
```
INTEGER2NUM(IFF_MASTER_ALB)
```
IFF_MASTER_ARPMON =

bonding master, ARP mon in use

# File 'ext/socket/constdefs.c', line 4779
```
INTEGER2NUM(IFF_MASTER_ARPMON)
```
IFF_MONITOR =

user-requested monitor mode

# File 'ext/socket/constdefs.c', line 4785
```
INTEGER2NUM(IFF_MONITOR)
```
IFF_MULTICAST =

supports multicast

# File 'ext/socket/constdefs.c', line 4791
```
INTEGER2NUM(IFF_MULTICAST)
```
IFF_NOARP =

no address resolution protocol

# File 'ext/socket/constdefs.c', line 4797
```
INTEGER2NUM(IFF_NOARP)
```
IFF_NOTRAILERS =

avoid use of trailers

# File 'ext/socket/constdefs.c', line 4803
```
INTEGER2NUM(IFF_NOTRAILERS)
```
IFF_OACTIVE =

transmission in progress

# File 'ext/socket/constdefs.c', line 4809
```
INTEGER2NUM(IFF_OACTIVE)
```
IFF_OVS_DATAPATH =

device used as Open vSwitch datapath port

# File 'ext/socket/constdefs.c', line 4815
```
INTEGER2NUM(IFF_OVS_DATAPATH)
```
IFF_POINTOPOINT =

point-to-point link

# File 'ext/socket/constdefs.c', line 4821
```
INTEGER2NUM(IFF_POINTOPOINT)
```
IFF_PORTSEL =

can set media type

# File 'ext/socket/constdefs.c', line 4827
```
INTEGER2NUM(IFF_PORTSEL)
```
IFF_PPROMISC =

user-requested promisc mode

# File 'ext/socket/constdefs.c', line 4833
```
INTEGER2NUM(IFF_PPROMISC)
```
IFF_PROMISC =

receive all packets

# File 'ext/socket/constdefs.c', line 4839
```
INTEGER2NUM(IFF_PROMISC)
```
IFF_RENAMING =

interface is being renamed

# File 'ext/socket/constdefs.c', line 4845
```
INTEGER2NUM(IFF_RENAMING)
```
IFF_ROUTE =

routing entry installed

# File 'ext/socket/constdefs.c', line 4851
```
INTEGER2NUM(IFF_ROUTE)
```
IFF_RUNNING =

resources allocated

# File 'ext/socket/constdefs.c', line 4857
```
INTEGER2NUM(IFF_RUNNING)
```
IFF_SIMPLEX =

can’t hear own transmissions

# File 'ext/socket/constdefs.c', line 4863
```
INTEGER2NUM(IFF_SIMPLEX)
```
IFF_SLAVE =

slave of a load balancer

# File 'ext/socket/constdefs.c', line 4869
```
INTEGER2NUM(IFF_SLAVE)
```
IFF_SLAVE_INACTIVE =

bonding slave not the curr. active

# File 'ext/socket/constdefs.c', line 4875
```
INTEGER2NUM(IFF_SLAVE_INACTIVE)
```
IFF_SLAVE_NEEDARP =

need ARPs for validation

# File 'ext/socket/constdefs.c', line 4881
```
INTEGER2NUM(IFF_SLAVE_NEEDARP)
```
IFF_SMART =

interface manages own routes

# File 'ext/socket/constdefs.c', line 4887
```
INTEGER2NUM(IFF_SMART)
```
IFF_STATICARP =

static ARP

# File 'ext/socket/constdefs.c', line 4893
```
INTEGER2NUM(IFF_STATICARP)
```
IFF_SUPP_NOFCS =

sending custom FCS

# File 'ext/socket/constdefs.c', line 4899
```
INTEGER2NUM(IFF_SUPP_NOFCS)
```
IFF_TEAM_PORT =

used as team port

# File 'ext/socket/constdefs.c', line 4905
```
INTEGER2NUM(IFF_TEAM_PORT)
```
IFF_TX_SKB_SHARING =

sharing skbs on transmit

# File 'ext/socket/constdefs.c', line 4911
```
INTEGER2NUM(IFF_TX_SKB_SHARING)
```
IFF_UNICAST_FLT =

unicast filtering

# File 'ext/socket/constdefs.c', line 4917
```
INTEGER2NUM(IFF_UNICAST_FLT)
```
IFF_UP =

interface is up

# File 'ext/socket/constdefs.c', line 4923
```
INTEGER2NUM(IFF_UP)
```
IFF_VOLATILE =

volatile flags

# File 'ext/socket/constdefs.c', line 4941
```
INTEGER2NUM(IFF_VOLATILE)
```
IFF_WAN_HDLC =

WAN HDLC device

# File 'ext/socket/constdefs.c', line 4929
```
INTEGER2NUM(IFF_WAN_HDLC)
```
IFF_XMIT_DST_RELEASE =

dev_hard_start_xmit() is allowed to release skb->dst

# File 'ext/socket/constdefs.c', line 4935
```
INTEGER2NUM(IFF_XMIT_DST_RELEASE)
```
IFNAMSIZ =

Maximum interface name size

# File 'ext/socket/constdefs.c', line 4515
```
INTEGER2NUM(IFNAMSIZ)
```
IF_NAMESIZE =

Maximum interface name size

# File 'ext/socket/constdefs.c', line 4521
```
INTEGER2NUM(IF_NAMESIZE)
```
INADDR_ALLHOSTS_GROUP =

Multicast group for all systems on this subset

# File 'ext/socket/constdefs.c', line 3195
```
INTEGER2NUM(INADDR_ALLHOSTS_GROUP)
```
INADDR_ANY =

A socket bound to INADDR_ANY receives packets from all interfaces and sends from the default IP address

# File 'ext/socket/constdefs.c', line 3171
```
INTEGER2NUM(INADDR_ANY)
```
INADDR_BROADCAST =

The network broadcast address

# File 'ext/socket/constdefs.c', line 3177
```
INTEGER2NUM(INADDR_BROADCAST)
```
INADDR_LOOPBACK =

The loopback address

# File 'ext/socket/constdefs.c', line 3183
```
INTEGER2NUM(INADDR_LOOPBACK)
```
INADDR_MAX_LOCAL_GROUP =

The last local network multicast group

# File 'ext/socket/constdefs.c', line 3201
```
INTEGER2NUM(INADDR_MAX_LOCAL_GROUP)
```
INADDR_NONE =

A bitmask for matching no valid IP address

# File 'ext/socket/constdefs.c', line 3207
```
INTEGER2NUM(INADDR_NONE)
```
INADDR_UNSPEC_GROUP =

The reserved multicast group

# File 'ext/socket/constdefs.c', line 3189
```
INTEGER2NUM(INADDR_UNSPEC_GROUP)
```
INET6_ADDRSTRLEN =

Maximum length of an IPv6 address string

# File 'ext/socket/constdefs.c', line 4509
```
INTEGER2NUM(INET6_ADDRSTRLEN)
```
INET_ADDRSTRLEN =

Maximum length of an IPv4 address string

# File 'ext/socket/constdefs.c', line 4503
```
INTEGER2NUM(INET_ADDRSTRLEN)
```
IPPORT_RESERVED =

Default minimum address for bind or connect

# File 'ext/socket/constdefs.c', line 3159
```
INTEGER2NUM(IPPORT_RESERVED)
```
IPPORT_USERRESERVED =

Default maximum address for bind or connect

# File 'ext/socket/constdefs.c', line 3165
```
INTEGER2NUM(IPPORT_USERRESERVED)
```
IPPROTO_AH =

IP6 auth header

# File 'ext/socket/constdefs.c', line 3093
```
INTEGER2NUM(IPPROTO_AH)
```
IPPROTO_BIP =
# File 'ext/socket/constdefs.c', line 3087
```
INTEGER2NUM(IPPROTO_BIP)
```
IPPROTO_DSTOPTS =

IP6 destination option

# File 'ext/socket/constdefs.c', line 3099
```
INTEGER2NUM(IPPROTO_DSTOPTS)
```
IPPROTO_EGP =

Exterior Gateway Protocol

# File 'ext/socket/constdefs.c', line 3033
```
INTEGER2NUM(IPPROTO_EGP)
```
IPPROTO_EON =

ISO cnlp

# File 'ext/socket/constdefs.c', line 3081
```
INTEGER2NUM(IPPROTO_EON)
```
IPPROTO_ESP =

IP6 Encapsulated Security Payload

# File 'ext/socket/constdefs.c', line 3105
```
INTEGER2NUM(IPPROTO_ESP)
```
IPPROTO_FRAGMENT =

IP6 fragmentation header

# File 'ext/socket/constdefs.c', line 3111
```
INTEGER2NUM(IPPROTO_FRAGMENT)
```
IPPROTO_GGP =

Gateway to Gateway Protocol

# File 'ext/socket/constdefs.c', line 3021
```
INTEGER2NUM(IPPROTO_GGP)
```
IPPROTO_HELLO =

“hello” routing protocol

# File 'ext/socket/constdefs.c', line 3057
```
INTEGER2NUM(IPPROTO_HELLO)
```
IPPROTO_HOPOPTS =

IP6 hop-by-hop options

# File 'ext/socket/constdefs.c', line 3117
```
INTEGER2NUM(IPPROTO_HOPOPTS)
```
IPPROTO_ICMP =

Control message protocol

# File 'ext/socket/constdefs.c', line 3009
```
INTEGER2NUM(IPPROTO_ICMP)
```
IPPROTO_ICMPV6 =

ICMP6

# File 'ext/socket/constdefs.c', line 3123
```
INTEGER2NUM(IPPROTO_ICMPV6)
```
IPPROTO_IDP =

XNS IDP

# File 'ext/socket/constdefs.c', line 3051
```
INTEGER2NUM(IPPROTO_IDP)
```
IPPROTO_IGMP =

Group Management Protocol

# File 'ext/socket/constdefs.c', line 3015
```
INTEGER2NUM(IPPROTO_IGMP)
```
IPPROTO_IP =

Dummy protocol for IP

# File 'ext/socket/constdefs.c', line 3003
```
INTEGER2NUM(IPPROTO_IP)
```
IPPROTO_IPV6 =

IP6 header

# File 'ext/socket/constdefs.c', line 3129
```
INTEGER2NUM(IPPROTO_IPV6)
```
IPPROTO_MAX =

Maximum IPPROTO constant

# File 'ext/socket/constdefs.c', line 3153
```
INTEGER2NUM(IPPROTO_MAX)
```
IPPROTO_ND =

Sun net disk protocol

# File 'ext/socket/constdefs.c', line 3063
```
INTEGER2NUM(IPPROTO_ND)
```
IPPROTO_NONE =

IP6 no next header

# File 'ext/socket/constdefs.c', line 3135
```
INTEGER2NUM(IPPROTO_NONE)
```
IPPROTO_PUP =

PARC Universal Packet protocol

# File 'ext/socket/constdefs.c', line 3039
```
INTEGER2NUM(IPPROTO_PUP)
```
IPPROTO_RAW =

Raw IP packet

# File 'ext/socket/constdefs.c', line 3147
```
INTEGER2NUM(IPPROTO_RAW)
```
IPPROTO_ROUTING =

IP6 routing header

# File 'ext/socket/constdefs.c', line 3141
```
INTEGER2NUM(IPPROTO_ROUTING)
```
IPPROTO_TCP =

TCP

# File 'ext/socket/constdefs.c', line 3027
```
INTEGER2NUM(IPPROTO_TCP)
```
IPPROTO_TP =

ISO transport protocol class 4

# File 'ext/socket/constdefs.c', line 3069
```
INTEGER2NUM(IPPROTO_TP)
```
IPPROTO_UDP =

UDP

# File 'ext/socket/constdefs.c', line 3045
```
INTEGER2NUM(IPPROTO_UDP)
```
IPPROTO_XTP =

Xpress Transport Protocol

# File 'ext/socket/constdefs.c', line 3075
```
INTEGER2NUM(IPPROTO_XTP)
```
IPV6_CHECKSUM =

Checksum offset for raw sockets

# File 'ext/socket/constdefs.c', line 4344
```
INTEGER2NUM(IPV6_CHECKSUM)
```
IPV6_DONTFRAG =

Don’t fragment packets

# File 'ext/socket/constdefs.c', line 4352
```
INTEGER2NUM(IPV6_DONTFRAG)
```
IPV6_DSTOPTS =

Destination option

# File 'ext/socket/constdefs.c', line 4360
```
INTEGER2NUM(IPV6_DSTOPTS)
```
IPV6_HOPLIMIT =

Hop limit

# File 'ext/socket/constdefs.c', line 4368
```
INTEGER2NUM(IPV6_HOPLIMIT)
```
IPV6_HOPOPTS =

Hop-by-hop option

# File 'ext/socket/constdefs.c', line 4376
```
INTEGER2NUM(IPV6_HOPOPTS)
```
IPV6_JOIN_GROUP =

Join a group membership

# File 'ext/socket/constdefs.c', line 4288
```
INTEGER2NUM(IPV6_JOIN_GROUP)
```
IPV6_LEAVE_GROUP =

Leave a group membership

# File 'ext/socket/constdefs.c', line 4296
```
INTEGER2NUM(IPV6_LEAVE_GROUP)
```
IPV6_MULTICAST_HOPS =

IP6 multicast hops

# File 'ext/socket/constdefs.c', line 4304
```
INTEGER2NUM(IPV6_MULTICAST_HOPS)
```
IPV6_MULTICAST_IF =

IP6 multicast interface

# File 'ext/socket/constdefs.c', line 4312
```
INTEGER2NUM(IPV6_MULTICAST_IF)
```
IPV6_MULTICAST_LOOP =

IP6 multicast loopback

# File 'ext/socket/constdefs.c', line 4320
```
INTEGER2NUM(IPV6_MULTICAST_LOOP)
```
IPV6_NEXTHOP =

Next hop address

# File 'ext/socket/constdefs.c', line 4384
```
INTEGER2NUM(IPV6_NEXTHOP)
```
IPV6_PATHMTU =

Retrieve current path MTU

# File 'ext/socket/constdefs.c', line 4392
```
INTEGER2NUM(IPV6_PATHMTU)
```
IPV6_PKTINFO =

Receive packet information with datagram

# File 'ext/socket/constdefs.c', line 4400
```
INTEGER2NUM(IPV6_PKTINFO)
```
IPV6_RECVDSTOPTS =

Receive all IP6 options for response

# File 'ext/socket/constdefs.c', line 4408
```
INTEGER2NUM(IPV6_RECVDSTOPTS)
```
IPV6_RECVHOPLIMIT =

Receive hop limit with datagram

# File 'ext/socket/constdefs.c', line 4416
```
INTEGER2NUM(IPV6_RECVHOPLIMIT)
```
IPV6_RECVHOPOPTS =

Receive hop-by-hop options

# File 'ext/socket/constdefs.c', line 4424
```
INTEGER2NUM(IPV6_RECVHOPOPTS)
```
IPV6_RECVPATHMTU =

Receive current path MTU with datagram

# File 'ext/socket/constdefs.c', line 4480
```
INTEGER2NUM(IPV6_RECVPATHMTU)
```
IPV6_RECVPKTINFO =

Receive destination IP address and incoming interface

# File 'ext/socket/constdefs.c', line 4432
```
INTEGER2NUM(IPV6_RECVPKTINFO)
```
IPV6_RECVRTHDR =

Receive routing header

# File 'ext/socket/constdefs.c', line 4440
```
INTEGER2NUM(IPV6_RECVRTHDR)
```
IPV6_RECVTCLASS =

Receive traffic class

# File 'ext/socket/constdefs.c', line 4448
```
INTEGER2NUM(IPV6_RECVTCLASS)
```
IPV6_RTHDR =

Allows removal of sticky routing headers

# File 'ext/socket/constdefs.c', line 4456
```
INTEGER2NUM(IPV6_RTHDR)
```
IPV6_RTHDRDSTOPTS =

Allows removal of sticky destination options header

# File 'ext/socket/constdefs.c', line 4464
```
INTEGER2NUM(IPV6_RTHDRDSTOPTS)
```
IPV6_RTHDR_TYPE_0 =

Routing header type 0

# File 'ext/socket/constdefs.c', line 4472
```
INTEGER2NUM(IPV6_RTHDR_TYPE_0)
```
IPV6_TCLASS =

Specify the traffic class

# File 'ext/socket/constdefs.c', line 4488
```
INTEGER2NUM(IPV6_TCLASS)
```
IPV6_UNICAST_HOPS =

IP6 unicast hops

# File 'ext/socket/constdefs.c', line 4328
```
INTEGER2NUM(IPV6_UNICAST_HOPS)
```
IPV6_USE_MIN_MTU =

Use the minimum MTU size

# File 'ext/socket/constdefs.c', line 4496
```
INTEGER2NUM(IPV6_USE_MIN_MTU)
```
IPV6_V6ONLY =

Only bind IPv6 with a wildcard bind

# File 'ext/socket/constdefs.c', line 4336
```
INTEGER2NUM(IPV6_V6ONLY)
```
IPX_TYPE =
# File 'ext/socket/constdefs.c', line 3909
```
INTEGER2NUM(IPX_TYPE)
```
IP_ADD_MEMBERSHIP =

Add a multicast group membership

# File 'ext/socket/constdefs.c', line 3327
```
INTEGER2NUM(IP_ADD_MEMBERSHIP)
```
IP_ADD_SOURCE_MEMBERSHIP =

Add a multicast group membership

# File 'ext/socket/constdefs.c', line 3459
```
INTEGER2NUM(IP_ADD_SOURCE_MEMBERSHIP)
```
IP_BLOCK_SOURCE =

Block IPv4 multicast packets with a give source address

# File 'ext/socket/constdefs.c', line 3453
```
INTEGER2NUM(IP_BLOCK_SOURCE)
```
IP_DEFAULT_MULTICAST_LOOP =

Default multicast loopback

# File 'ext/socket/constdefs.c', line 3345
```
INTEGER2NUM(IP_DEFAULT_MULTICAST_LOOP)
```
IP_DEFAULT_MULTICAST_TTL =

Default multicast TTL

# File 'ext/socket/constdefs.c', line 3339
```
INTEGER2NUM(IP_DEFAULT_MULTICAST_TTL)
```
IP_DONTFRAG =

Don’t fragment packets

# File 'ext/socket/constdefs.c', line 3267
```
INTEGER2NUM(IP_DONTFRAG)
```
IP_DROP_MEMBERSHIP =

Drop a multicast group membership

# File 'ext/socket/constdefs.c', line 3333
```
INTEGER2NUM(IP_DROP_MEMBERSHIP)
```
IP_DROP_SOURCE_MEMBERSHIP =

Drop a multicast group membership

# File 'ext/socket/constdefs.c', line 3465
```
INTEGER2NUM(IP_DROP_SOURCE_MEMBERSHIP)
```
IP_FREEBIND =

Allow binding to nonexistent IP addresses

# File 'ext/socket/constdefs.c', line 3399
```
INTEGER2NUM(IP_FREEBIND)
```
IP_HDRINCL =

Header is included with data

# File 'ext/socket/constdefs.c', line 3219
```
INTEGER2NUM(IP_HDRINCL)
```
IP_IPSEC_POLICY =

IPsec security policy

# File 'ext/socket/constdefs.c', line 3405
```
INTEGER2NUM(IP_IPSEC_POLICY)
```
IP_MAX_MEMBERSHIPS =

Maximum number multicast groups a socket can join

# File 'ext/socket/constdefs.c', line 3351
```
INTEGER2NUM(IP_MAX_MEMBERSHIPS)
```
IP_MINTTL =

Minimum TTL allowed for received packets

# File 'ext/socket/constdefs.c', line 3261
```
INTEGER2NUM(IP_MINTTL)
```
IP_MSFILTER =

Multicast source filtering

# File 'ext/socket/constdefs.c', line 3471
```
INTEGER2NUM(IP_MSFILTER)
```
IP_MTU =

The Maximum Transmission Unit of the socket

# File 'ext/socket/constdefs.c', line 3393
```
INTEGER2NUM(IP_MTU)
```
IP_MTU_DISCOVER =

Path MTU discovery

# File 'ext/socket/constdefs.c', line 3375
```
INTEGER2NUM(IP_MTU_DISCOVER)
```
IP_MULTICAST_IF =

IP multicast interface

# File 'ext/socket/constdefs.c', line 3309
```
INTEGER2NUM(IP_MULTICAST_IF)
```
IP_MULTICAST_LOOP =

IP multicast loopback

# File 'ext/socket/constdefs.c', line 3321
```
INTEGER2NUM(IP_MULTICAST_LOOP)
```
IP_MULTICAST_TTL =

IP multicast TTL

# File 'ext/socket/constdefs.c', line 3315
```
INTEGER2NUM(IP_MULTICAST_TTL)
```
IP_ONESBCAST =

Force outgoing broadcast datagrams to have the undirected broadcast address

# File 'ext/socket/constdefs.c', line 3279
```
INTEGER2NUM(IP_ONESBCAST)
```
IP_OPTIONS =

IP options to be included in packets

# File 'ext/socket/constdefs.c', line 3213
```
INTEGER2NUM(IP_OPTIONS)
```
IP_PASSSEC =

Retrieve security context with datagram

# File 'ext/socket/constdefs.c', line 3417
```
INTEGER2NUM(IP_PASSSEC)
```
IP_PKTINFO =

Receive packet information with datagrams

# File 'ext/socket/constdefs.c', line 3363
```
INTEGER2NUM(IP_PKTINFO)
```
IP_PKTOPTIONS =

Receive packet options with datagrams

# File 'ext/socket/constdefs.c', line 3369
```
INTEGER2NUM(IP_PKTOPTIONS)
```
IP_PMTUDISC_DO =

Always send DF frames

# File 'ext/socket/constdefs.c', line 3441
```
INTEGER2NUM(IP_PMTUDISC_DO)
```
IP_PMTUDISC_DONT =

Never send DF frames

# File 'ext/socket/constdefs.c', line 3429
```
INTEGER2NUM(IP_PMTUDISC_DONT)
```
IP_PMTUDISC_WANT =

Use per-route hints

# File 'ext/socket/constdefs.c', line 3435
```
INTEGER2NUM(IP_PMTUDISC_WANT)
```
IP_PORTRANGE =

Set the port range for sockets with unspecified port numbers

# File 'ext/socket/constdefs.c', line 3303
```
INTEGER2NUM(IP_PORTRANGE)
```
IP_RECVDSTADDR =

Receive IP destination address with datagram

# File 'ext/socket/constdefs.c', line 3249
```
INTEGER2NUM(IP_RECVDSTADDR)
```
IP_RECVERR =

Enable extended reliable error message passing

# File 'ext/socket/constdefs.c', line 3381
```
INTEGER2NUM(IP_RECVERR)
```
IP_RECVIF =

Receive interface information with datagrams

# File 'ext/socket/constdefs.c', line 3291
```
INTEGER2NUM(IP_RECVIF)
```
IP_RECVOPTS =

Receive all IP options with datagram

# File 'ext/socket/constdefs.c', line 3237
```
INTEGER2NUM(IP_RECVOPTS)
```
IP_RECVRETOPTS =

Receive all IP options for response

# File 'ext/socket/constdefs.c', line 3243
```
INTEGER2NUM(IP_RECVRETOPTS)
```
IP_RECVSLLA =

Receive link-layer address with datagrams

# File 'ext/socket/constdefs.c', line 3297
```
INTEGER2NUM(IP_RECVSLLA)
```
IP_RECVTOS =

Receive TOS with incoming packets

# File 'ext/socket/constdefs.c', line 3387
```
INTEGER2NUM(IP_RECVTOS)
```
IP_RECVTTL =

Receive IP TTL with datagrams

# File 'ext/socket/constdefs.c', line 3285
```
INTEGER2NUM(IP_RECVTTL)
```
IP_RETOPTS =

IP options to be included in datagrams

# File 'ext/socket/constdefs.c', line 3255
```
INTEGER2NUM(IP_RETOPTS)
```
IP_ROUTER_ALERT =

Notify transit routers to more closely examine the contents of an IP packet

# File 'ext/socket/constdefs.c', line 3357
```
INTEGER2NUM(IP_ROUTER_ALERT)
```
IP_SENDSRCADDR =

Source address for outgoing UDP datagrams

# File 'ext/socket/constdefs.c', line 3273
```
INTEGER2NUM(IP_SENDSRCADDR)
```
IP_TOS =

IP type-of-service

# File 'ext/socket/constdefs.c', line 3225
```
INTEGER2NUM(IP_TOS)
```
IP_TRANSPARENT =

Transparent proxy

# File 'ext/socket/constdefs.c', line 3423
```
INTEGER2NUM(IP_TRANSPARENT)
```
IP_TTL =

IP time-to-live

# File 'ext/socket/constdefs.c', line 3231
```
INTEGER2NUM(IP_TTL)
```
IP_UNBLOCK_SOURCE =

Unblock IPv4 multicast packets with a give source address

# File 'ext/socket/constdefs.c', line 3447
```
INTEGER2NUM(IP_UNBLOCK_SOURCE)
```
IP_XFRM_POLICY =
# File 'ext/socket/constdefs.c', line 3411
```
INTEGER2NUM(IP_XFRM_POLICY)
```
LOCAL_CONNWAIT =

Connect blocks until accepted

# File 'ext/socket/constdefs.c', line 4599
```
INTEGER2NUM(LOCAL_CONNWAIT)
```
LOCAL_CREDS =

Pass credentials to receiver

# File 'ext/socket/constdefs.c', line 4593
```
INTEGER2NUM(LOCAL_CREDS)
```
LOCAL_PEERCRED =

Retrieve peer credentials

# File 'ext/socket/constdefs.c', line 4587
```
INTEGER2NUM(LOCAL_PEERCRED)
```
MCAST_BLOCK_SOURCE =

Block multicast packets from this source

# File 'ext/socket/constdefs.c', line 3483
```
INTEGER2NUM(MCAST_BLOCK_SOURCE)
```
MCAST_EXCLUDE =

Exclusive multicast source filter

# File 'ext/socket/constdefs.c', line 3519
```
INTEGER2NUM(MCAST_EXCLUDE)
```
MCAST_INCLUDE =

Inclusive multicast source filter

# File 'ext/socket/constdefs.c', line 3525
```
INTEGER2NUM(MCAST_INCLUDE)
```
MCAST_JOIN_GROUP =

Join a multicast group

# File 'ext/socket/constdefs.c', line 3477
```
INTEGER2NUM(MCAST_JOIN_GROUP)
```
MCAST_JOIN_SOURCE_GROUP =

Join a multicast source group

# File 'ext/socket/constdefs.c', line 3501
```
INTEGER2NUM(MCAST_JOIN_SOURCE_GROUP)
```
MCAST_LEAVE_GROUP =

Leave a multicast group

# File 'ext/socket/constdefs.c', line 3495
```
INTEGER2NUM(MCAST_LEAVE_GROUP)
```
MCAST_LEAVE_SOURCE_GROUP =

Leave a multicast source group

# File 'ext/socket/constdefs.c', line 3507
```
INTEGER2NUM(MCAST_LEAVE_SOURCE_GROUP)
```
MCAST_MSFILTER =

Multicast source filtering

# File 'ext/socket/constdefs.c', line 3513
```
INTEGER2NUM(MCAST_MSFILTER)
```
MCAST_UNBLOCK_SOURCE =

Unblock multicast packets from this source

# File 'ext/socket/constdefs.c', line 3489
```
INTEGER2NUM(MCAST_UNBLOCK_SOURCE)
```
MSG_COMPAT =

End of record

# File 'ext/socket/constdefs.c', line 2901
```
INTEGER2NUM(MSG_COMPAT)
```
MSG_CONFIRM =

Confirm path validity

# File 'ext/socket/constdefs.c', line 2925
```
INTEGER2NUM(MSG_CONFIRM)
```
MSG_CTRUNC =

Control data lost before delivery

# File 'ext/socket/constdefs.c', line 2847
```
INTEGER2NUM(MSG_CTRUNC)
```
MSG_DONTROUTE =

Send without using the routing tables

# File 'ext/socket/constdefs.c', line 2829
```
INTEGER2NUM(MSG_DONTROUTE)
```
MSG_DONTWAIT =

This message should be non-blocking

# File 'ext/socket/constdefs.c', line 2859
```
INTEGER2NUM(MSG_DONTWAIT)
```
MSG_EOF =

::Data completes connection

# File 'ext/socket/constdefs.c', line 2865
```
INTEGER2NUM(MSG_EOF)
```
MSG_EOR =

::Data completes record

# File 'ext/socket/constdefs.c', line 2835
```
INTEGER2NUM(MSG_EOR)
```
MSG_ERRQUEUE =

Fetch message from error queue

# File 'ext/socket/constdefs.c', line 2937
```
INTEGER2NUM(MSG_ERRQUEUE)
```
MSG_FASTOPEN =

Reduce step of the handshake process

# File 'ext/socket/constdefs.c', line 2955
```
INTEGER2NUM(MSG_FASTOPEN)
```
MSG_FIN =
# File 'ext/socket/constdefs.c', line 2913
```
INTEGER2NUM(MSG_FIN)
```
MSG_FLUSH =

Start of a hold sequence. Dumps to so_temp

# File 'ext/socket/constdefs.c', line 2871
```
INTEGER2NUM(MSG_FLUSH)
```
MSG_HAVEMORE =

::Data ready to be read

# File 'ext/socket/constdefs.c', line 2889
```
INTEGER2NUM(MSG_HAVEMORE)
```
MSG_HOLD =

Hold fragment in so_temp

# File 'ext/socket/constdefs.c', line 2877
```
INTEGER2NUM(MSG_HOLD)
```
MSG_MORE =

Sender will send more

# File 'ext/socket/constdefs.c', line 2949
```
INTEGER2NUM(MSG_MORE)
```
MSG_NOSIGNAL =

Do not generate SIGPIPE

# File 'ext/socket/constdefs.c', line 2943
```
INTEGER2NUM(MSG_NOSIGNAL)
```
MSG_OOB =

Process out-of-band data

# File 'ext/socket/constdefs.c', line 2817
```
INTEGER2NUM(MSG_OOB)
```
MSG_PEEK =

Peek at incoming message

# File 'ext/socket/constdefs.c', line 2823
```
INTEGER2NUM(MSG_PEEK)
```
MSG_PROXY =

Wait for full request

# File 'ext/socket/constdefs.c', line 2907
```
INTEGER2NUM(MSG_PROXY)
```
MSG_RCVMORE =

::Data remains in the current packet

# File 'ext/socket/constdefs.c', line 2895
```
INTEGER2NUM(MSG_RCVMORE)
```
MSG_RST =
# File 'ext/socket/constdefs.c', line 2931
```
INTEGER2NUM(MSG_RST)
```
MSG_SEND =

Send the packet in so_temp

# File 'ext/socket/constdefs.c', line 2883
```
INTEGER2NUM(MSG_SEND)
```
MSG_SYN =
# File 'ext/socket/constdefs.c', line 2919
```
INTEGER2NUM(MSG_SYN)
```
MSG_TRUNC =

::Data discarded before delivery

# File 'ext/socket/constdefs.c', line 2841
```
INTEGER2NUM(MSG_TRUNC)
```
MSG_WAITALL =

Wait for full request or error

# File 'ext/socket/constdefs.c', line 2853
```
INTEGER2NUM(MSG_WAITALL)
```
NI_DGRAM =

The service specified is a datagram service (looks up UDP ports)

# File 'ext/socket/constdefs.c', line 4263
```
INTEGER2NUM(NI_DGRAM)
```
NI_MAXHOST =

Maximum length of a hostname

# File 'ext/socket/constdefs.c', line 4227
```
INTEGER2NUM(NI_MAXHOST)
```
NI_MAXSERV =

Maximum length of a service name

# File 'ext/socket/constdefs.c', line 4233
```
INTEGER2NUM(NI_MAXSERV)
```
NI_NAMEREQD =

A name is required

# File 'ext/socket/constdefs.c', line 4251
```
INTEGER2NUM(NI_NAMEREQD)
```
NI_NOFQDN =

An FQDN is not required for local hosts, return only the local part

# File 'ext/socket/constdefs.c', line 4239
```
INTEGER2NUM(NI_NOFQDN)
```
NI_NUMERICHOST =

Return a numeric address

# File 'ext/socket/constdefs.c', line 4245
```
INTEGER2NUM(NI_NUMERICHOST)
```
NI_NUMERICSERV =

Return the service name as a digit string

# File 'ext/socket/constdefs.c', line 4257
```
INTEGER2NUM(NI_NUMERICSERV)
```
PF_APPLETALK =

AppleTalk protocol

# File 'ext/socket/constdefs.c', line 2421
```
INTEGER2NUM(PF_APPLETALK)
```
PF_ATM =

Asynchronous Transfer Mode

# File 'ext/socket/constdefs.c', line 2745
```
INTEGER2NUM(PF_ATM)
```
PF_AX25 =

AX.25 protocol

# File 'ext/socket/constdefs.c', line 2397
```
INTEGER2NUM(PF_AX25)
```
PF_CCITT =

CCITT (now ITU-T) protocols

# File 'ext/socket/constdefs.c', line 2541
```
INTEGER2NUM(PF_CCITT)
```
PF_CHAOS =

MIT CHAOS protocols

# File 'ext/socket/constdefs.c', line 2469
```
INTEGER2NUM(PF_CHAOS)
```
PF_CNT =

Computer Network Technology

# File 'ext/socket/constdefs.c', line 2649
```
INTEGER2NUM(PF_CNT)
```
PF_COIP =

Connection-oriented IP

# File 'ext/socket/constdefs.c', line 2637
```
INTEGER2NUM(PF_COIP)
```
PF_DATAKIT =

Datakit protocol

# File 'ext/socket/constdefs.c', line 2529
```
INTEGER2NUM(PF_DATAKIT)
```
PF_DEC =

DECnet protocol

# File 'ext/socket/constdefs.c', line 2565
```
INTEGER2NUM(PF_DEC)
```
PF_DLI =

DEC Direct ::Data Link Interface protocol

# File 'ext/socket/constdefs.c', line 2577
```
INTEGER2NUM(PF_DLI)
```
PF_ECMA =

European Computer Manufacturers protocols

# File 'ext/socket/constdefs.c', line 2517
```
INTEGER2NUM(PF_ECMA)
```
PF_HYLINK =

NSC Hyperchannel protocol

# File 'ext/socket/constdefs.c', line 2601
```
INTEGER2NUM(PF_HYLINK)
```
PF_IMPLINK =

ARPANET IMP protocol

# File 'ext/socket/constdefs.c', line 2445
```
INTEGER2NUM(PF_IMPLINK)
```
PF_INET =

IPv4 protocol

# File 'ext/socket/constdefs.c', line 2357
```
INTEGER2NUM(PF_INET)
```
PF_INET6 =

IPv6 protocol

# File 'ext/socket/constdefs.c', line 2372
```
INTEGER2NUM(PF_INET6)
```
PF_IPX =

IPX protocol

# File 'ext/socket/constdefs.c', line 2409
```
INTEGER2NUM(PF_IPX)
```
PF_ISDN =

Integrated Services Digital Network

# File 'ext/socket/constdefs.c', line 2685
```
INTEGER2NUM(PF_ISDN)
```
PF_ISO =

ISO Open Systems Interconnection protocols

# File 'ext/socket/constdefs.c', line 2493
```
INTEGER2NUM(PF_ISO)
```
PF_KEY =
# File 'ext/socket/constdefs.c', line 2811
```
INTEGER2NUM(PF_KEY)
```
PF_LAT =

Local Area Transport protocol

# File 'ext/socket/constdefs.c', line 2589
```
INTEGER2NUM(PF_LAT)
```
PF_LINK =

Link layer interface

# File 'ext/socket/constdefs.c', line 2625
```
INTEGER2NUM(PF_LINK)
```
PF_LOCAL =

Host-internal protocols

# File 'ext/socket/constdefs.c', line 2433
```
INTEGER2NUM(PF_LOCAL)
```
PF_MAX =

Maximum address family for this platform

# File 'ext/socket/constdefs.c', line 2769
```
INTEGER2NUM(PF_MAX)
```
PF_NATM =

Native ATM access

# File 'ext/socket/constdefs.c', line 2697
```
INTEGER2NUM(PF_NATM)
```
PF_NDRV =

Network driver raw access

# File 'ext/socket/constdefs.c', line 2673
```
INTEGER2NUM(PF_NDRV)
```
PF_NETBIOS =

NetBIOS

# File 'ext/socket/constdefs.c', line 2721
```
INTEGER2NUM(PF_NETBIOS)
```
PF_NETGRAPH =

Netgraph sockets

# File 'ext/socket/constdefs.c', line 2757
```
INTEGER2NUM(PF_NETGRAPH)
```
PF_NS =

XEROX NS protocols

# File 'ext/socket/constdefs.c', line 2481
```
INTEGER2NUM(PF_NS)
```
PF_OSI =

ISO Open Systems Interconnection protocols

# File 'ext/socket/constdefs.c', line 2505
```
INTEGER2NUM(PF_OSI)
```
PF_PACKET =

Direct link-layer access

# File 'ext/socket/constdefs.c', line 2781
```
INTEGER2NUM(PF_PACKET)
```
PF_PIP =
# File 'ext/socket/constdefs.c', line 2805
```
INTEGER2NUM(PF_PIP)
```
PF_PPP =

Point-to-Point Protocol

# File 'ext/socket/constdefs.c', line 2733
```
INTEGER2NUM(PF_PPP)
```
PF_PUP =

PARC Universal Packet protocol

# File 'ext/socket/constdefs.c', line 2457
```
INTEGER2NUM(PF_PUP)
```
PF_ROUTE =

Internal routing protocol

# File 'ext/socket/constdefs.c', line 2613
```
INTEGER2NUM(PF_ROUTE)
```
PF_RTIP =
# File 'ext/socket/constdefs.c', line 2799
```
INTEGER2NUM(PF_RTIP)
```
PF_SIP =

Simple Internet Protocol

# File 'ext/socket/constdefs.c', line 2661
```
INTEGER2NUM(PF_SIP)
```
PF_SNA =

IBM SNA protocol

# File 'ext/socket/constdefs.c', line 2553
```
INTEGER2NUM(PF_SNA)
```
PF_SYSTEM =
# File 'ext/socket/constdefs.c', line 2709
```
INTEGER2NUM(PF_SYSTEM)
```
PF_UNIX =

UNIX sockets

# File 'ext/socket/constdefs.c', line 2385
```
INTEGER2NUM(PF_UNIX)
```
PF_UNSPEC =

Unspecified protocol, any supported address family

# File 'ext/socket/constdefs.c', line 2345
```
INTEGER2NUM(PF_UNSPEC)
```
PF_XTP =

eXpress Transfer Protocol

# File 'ext/socket/constdefs.c', line 2793
```
INTEGER2NUM(PF_XTP)
```
SCM_BINTIME =

Timestamp (bintime)

# File 'ext/socket/constdefs.c', line 4557
```
INTEGER2NUM(SCM_BINTIME)
```
SCM_CREDENTIALS =

The sender’s credentials

# File 'ext/socket/constdefs.c', line 4563
```
INTEGER2NUM(SCM_CREDENTIALS)
```
SCM_CREDS =

Process credentials

# File 'ext/socket/constdefs.c', line 4569
```
INTEGER2NUM(SCM_CREDS)
```
SCM_RIGHTS =

Access rights

# File 'ext/socket/constdefs.c', line 4533
```
INTEGER2NUM(SCM_RIGHTS)
```
SCM_TIMESTAMP =

Timestamp (timeval)

# File 'ext/socket/constdefs.c', line 4539
```
INTEGER2NUM(SCM_TIMESTAMP)
```
SCM_TIMESTAMPING =

Timestamp (timespec list) (Linux 2.6.30)

# File 'ext/socket/constdefs.c', line 4551
```
INTEGER2NUM(SCM_TIMESTAMPING)
```
SCM_TIMESTAMPNS =

Timespec (timespec)

# File 'ext/socket/constdefs.c', line 4545
```
INTEGER2NUM(SCM_TIMESTAMPNS)
```
SCM_UCRED =

User credentials

# File 'ext/socket/constdefs.c', line 4575
```
INTEGER2NUM(SCM_UCRED)
```
SCM_WIFI_STATUS =

Wifi status (Linux 3.3)

# File 'ext/socket/constdefs.c', line 4581
```
INTEGER2NUM(SCM_WIFI_STATUS)
```
SHUT_RD =

Shut down the reading side of the socket

# File 'ext/socket/constdefs.c', line 4269
```
INTEGER2NUM(SHUT_RD)
```
SHUT_RDWR =

Shut down the both sides of the socket

# File 'ext/socket/constdefs.c', line 4281
```
INTEGER2NUM(SHUT_RDWR)
```
SHUT_WR =

Shut down the writing side of the socket

# File 'ext/socket/constdefs.c', line 4275
```
INTEGER2NUM(SHUT_WR)
```
SOCK_DGRAM =

A datagram socket provides connectionless, unreliable messaging

# File 'ext/socket/constdefs.c', line 2309
```
INTEGER2NUM(SOCK_DGRAM)
```
SOCK_PACKET =

Device-level packet access

# File 'ext/socket/constdefs.c', line 2333
```
INTEGER2NUM(SOCK_PACKET)
```
SOCK_RAW =

A raw socket provides low-level access for direct access or implementing network protocols

# File 'ext/socket/constdefs.c', line 2315
```
INTEGER2NUM(SOCK_RAW)
```
SOCK_RDM =

A reliable datagram socket provides reliable delivery of messages

# File 'ext/socket/constdefs.c', line 2321
```
INTEGER2NUM(SOCK_RDM)
```
SOCK_SEQPACKET =

A sequential packet socket provides sequenced, reliable two-way connection for datagrams

# File 'ext/socket/constdefs.c', line 2327
```
INTEGER2NUM(SOCK_SEQPACKET)
```
SOCK_STREAM =

A stream socket provides a sequenced, reliable two-way connection for a byte stream

# File 'ext/socket/constdefs.c', line 2303
```
INTEGER2NUM(SOCK_STREAM)
```
SOL_ATALK =

AppleTalk socket options

# File 'ext/socket/constdefs.c', line 2985
```
INTEGER2NUM(SOL_ATALK)
```
SOL_AX25 =

AX.25 socket options

# File 'ext/socket/constdefs.c', line 2979
```
INTEGER2NUM(SOL_AX25)
```
SOL_IP =

IP socket options

# File 'ext/socket/constdefs.c', line 2967
```
INTEGER2NUM(SOL_IP)
```
SOL_IPX =

IPX socket options

# File 'ext/socket/constdefs.c', line 2973
```
INTEGER2NUM(SOL_IPX)
```
SOL_SOCKET =

Socket-level options

# File 'ext/socket/constdefs.c', line 2961
```
INTEGER2NUM(SOL_SOCKET)
```
SOL_TCP =

TCP socket options

# File 'ext/socket/constdefs.c', line 2991
```
INTEGER2NUM(SOL_TCP)
```
SOL_UDP =

UDP socket options

# File 'ext/socket/constdefs.c', line 2997
```
INTEGER2NUM(SOL_UDP)
```
SOMAXCONN =

Maximum connection requests that may be queued for a socket

# File 'ext/socket/constdefs.c', line 4527
```
INTEGER2NUM(SOMAXCONN)
```
SOPRI_BACKGROUND =

Background socket priority

# File 'ext/socket/constdefs.c', line 3903
```
INTEGER2NUM(SOPRI_BACKGROUND)
```
SOPRI_INTERACTIVE =

Interactive socket priority

# File 'ext/socket/constdefs.c', line 3891
```
INTEGER2NUM(SOPRI_INTERACTIVE)
```
SOPRI_NORMAL =

Normal socket priority

# File 'ext/socket/constdefs.c', line 3897
```
INTEGER2NUM(SOPRI_NORMAL)
```
SO_ACCEPTCONN =

::Socket has had listen() called on it

# File 'ext/socket/constdefs.c', line 3663
```
INTEGER2NUM(SO_ACCEPTCONN)
```
SO_ACCEPTFILTER =

There is an accept filter

# File 'ext/socket/constdefs.c', line 3675
```
INTEGER2NUM(SO_ACCEPTFILTER)
```
SO_ALLZONES =

Bypass zone boundaries

# File 'ext/socket/constdefs.c', line 3795
```
INTEGER2NUM(SO_ALLZONES)
```
SO_ATTACH_FILTER =

Attach an accept filter

# File 'ext/socket/constdefs.c', line 3741
```
INTEGER2NUM(SO_ATTACH_FILTER)
```
SO_BINDTODEVICE =

Only send packets from the given interface

# File 'ext/socket/constdefs.c', line 3735
```
INTEGER2NUM(SO_BINDTODEVICE)
```
SO_BINTIME =

Receive timestamp with datagrams (bintime)

# File 'ext/socket/constdefs.c', line 3777
```
INTEGER2NUM(SO_BINTIME)
```
SO_BPF_EXTENSIONS =

Query supported BPF extensions (Linux 3.14)

# File 'ext/socket/constdefs.c', line 3885
```
INTEGER2NUM(SO_BPF_EXTENSIONS)
```
SO_BROADCAST =

Permit sending of broadcast messages

# File 'ext/socket/constdefs.c', line 3567
```
INTEGER2NUM(SO_BROADCAST)
```
SO_BUSY_POLL =

Set the threshold in microseconds for low latency polling (Linux 3.11)

# File 'ext/socket/constdefs.c', line 3873
```
INTEGER2NUM(SO_BUSY_POLL)
```
SO_DEBUG =

Debug info recording

# File 'ext/socket/constdefs.c', line 3531
```
INTEGER2NUM(SO_DEBUG)
```
SO_DETACH_FILTER =

Detach an accept filter

# File 'ext/socket/constdefs.c', line 3747
```
INTEGER2NUM(SO_DETACH_FILTER)
```
SO_DOMAIN =

Domain given for socket() (Linux 2.6.32)

# File 'ext/socket/constdefs.c', line 3831
```
INTEGER2NUM(SO_DOMAIN)
```
SO_DONTROUTE =

Use interface addresses

# File 'ext/socket/constdefs.c', line 3561
```
INTEGER2NUM(SO_DONTROUTE)
```
SO_DONTTRUNC =

Retain unread data

# File 'ext/socket/constdefs.c', line 3681
```
INTEGER2NUM(SO_DONTTRUNC)
```
SO_ERROR =

Get and clear the error status

# File 'ext/socket/constdefs.c', line 3555
```
INTEGER2NUM(SO_ERROR)
```
SO_GET_FILTER =

Obtain filter set by SO_ATTACH_FILTER (Linux 3.8)

# File 'ext/socket/constdefs.c', line 3753
```
INTEGER2NUM(SO_GET_FILTER)
```
SO_KEEPALIVE =

Keep connections alive

# File 'ext/socket/constdefs.c', line 3597
```
INTEGER2NUM(SO_KEEPALIVE)
```
SO_LINGER =

Linger on close if data is present

# File 'ext/socket/constdefs.c', line 3621
```
INTEGER2NUM(SO_LINGER)
```
SO_LOCK_FILTER =

Lock the filter attached to a socket (Linux 3.9)

# File 'ext/socket/constdefs.c', line 3861
```
INTEGER2NUM(SO_LOCK_FILTER)
```
SO_MAC_EXEMPT =

Mandatory Access Control exemption for unlabeled peers

# File 'ext/socket/constdefs.c', line 3789
```
INTEGER2NUM(SO_MAC_EXEMPT)
```
SO_MARK =

Set the mark for mark-based routing (Linux 2.6.25)

# File 'ext/socket/constdefs.c', line 3813
```
INTEGER2NUM(SO_MARK)
```
SO_MAX_PACING_RATE =

Cap the rate computed by transport layer. [bytes per second] (Linux 3.13)

# File 'ext/socket/constdefs.c', line 3879
```
INTEGER2NUM(SO_MAX_PACING_RATE)
```
SO_NKE =

Install socket-level Network Kernel Extension

# File 'ext/socket/constdefs.c', line 3705
```
INTEGER2NUM(SO_NKE)
```
SO_NOFCS =

Set netns of a socket (Linux 3.4)

# File 'ext/socket/constdefs.c', line 3855
```
INTEGER2NUM(SO_NOFCS)
```
SO_NOSIGPIPE =

Don’t SIGPIPE on EPIPE

# File 'ext/socket/constdefs.c', line 3711
```
INTEGER2NUM(SO_NOSIGPIPE)
```
SO_NO_CHECK =

Disable checksums

# File 'ext/socket/constdefs.c', line 3609
```
INTEGER2NUM(SO_NO_CHECK)
```
SO_NREAD =

Get first packet byte count

# File 'ext/socket/constdefs.c', line 3699
```
INTEGER2NUM(SO_NREAD)
```
SO_OOBINLINE =

Leave received out-of-band data in-line

# File 'ext/socket/constdefs.c', line 3603
```
INTEGER2NUM(SO_OOBINLINE)
```
SO_PASSCRED =

Receive SCM_CREDENTIALS messages

# File 'ext/socket/constdefs.c', line 3627
```
INTEGER2NUM(SO_PASSCRED)
```
SO_PASSSEC =

Toggle security context passing (Linux 2.6.18)

# File 'ext/socket/constdefs.c', line 3807
```
INTEGER2NUM(SO_PASSSEC)
```
SO_PEEK_OFF =

Set the peek offset (Linux 3.4)

# File 'ext/socket/constdefs.c', line 3849
```
INTEGER2NUM(SO_PEEK_OFF)
```
SO_PEERCRED =

The credentials of the foreign process connected to this socket

# File 'ext/socket/constdefs.c', line 3633
```
INTEGER2NUM(SO_PEERCRED)
```
SO_PEERNAME =

Name of the connecting user

# File 'ext/socket/constdefs.c', line 3759
```
INTEGER2NUM(SO_PEERNAME)
```
SO_PEERSEC =

Obtain the security credentials (Linux 2.6.2)

# File 'ext/socket/constdefs.c', line 3801
```
INTEGER2NUM(SO_PEERSEC)
```
SO_PRIORITY =

The protocol-defined priority for all packets on this socket

# File 'ext/socket/constdefs.c', line 3615
```
INTEGER2NUM(SO_PRIORITY)
```
SO_PROTOCOL =

Protocol given for socket() (Linux 2.6.32)

# File 'ext/socket/constdefs.c', line 3825
```
INTEGER2NUM(SO_PROTOCOL)
```
SO_RCVBUF =

Receive buffer size

# File 'ext/socket/constdefs.c', line 3579
```
INTEGER2NUM(SO_RCVBUF)
```
SO_RCVBUFFORCE =

Receive buffer size without rmem_max limit (Linux 2.6.14)

# File 'ext/socket/constdefs.c', line 3591
```
INTEGER2NUM(SO_RCVBUFFORCE)
```
SO_RCVLOWAT =

Receive low-water mark

# File 'ext/socket/constdefs.c', line 3639
```
INTEGER2NUM(SO_RCVLOWAT)
```
SO_RCVTIMEO =

Receive timeout

# File 'ext/socket/constdefs.c', line 3651
```
INTEGER2NUM(SO_RCVTIMEO)
```
SO_RECVUCRED =

Receive user credentials with datagram

# File 'ext/socket/constdefs.c', line 3783
```
INTEGER2NUM(SO_RECVUCRED)
```
SO_REUSEADDR =

Allow local address reuse

# File 'ext/socket/constdefs.c', line 3537
```
INTEGER2NUM(SO_REUSEADDR)
```
SO_REUSEPORT =

Allow local address and port reuse

# File 'ext/socket/constdefs.c', line 3543
```
INTEGER2NUM(SO_REUSEPORT)
```
SO_RXQ_OVFL =

Toggle cmsg for number of packets dropped (Linux 2.6.33)

# File 'ext/socket/constdefs.c', line 3837
```
INTEGER2NUM(SO_RXQ_OVFL)
```
SO_SECURITY_AUTHENTICATION =
# File 'ext/socket/constdefs.c', line 3717
```
INTEGER2NUM(SO_SECURITY_AUTHENTICATION)
```
SO_SECURITY_ENCRYPTION_NETWORK =
# File 'ext/socket/constdefs.c', line 3729
```
INTEGER2NUM(SO_SECURITY_ENCRYPTION_NETWORK)
```
SO_SECURITY_ENCRYPTION_TRANSPORT =
# File 'ext/socket/constdefs.c', line 3723
```
INTEGER2NUM(SO_SECURITY_ENCRYPTION_TRANSPORT)
```
SO_SELECT_ERR_QUEUE =

Make select() detect socket error queue with errorfds (Linux 3.10)

# File 'ext/socket/constdefs.c', line 3867
```
INTEGER2NUM(SO_SELECT_ERR_QUEUE)
```
SO_SNDBUF =

Send buffer size

# File 'ext/socket/constdefs.c', line 3573
```
INTEGER2NUM(SO_SNDBUF)
```
SO_SNDBUFFORCE =

Send buffer size without wmem_max limit (Linux 2.6.14)

# File 'ext/socket/constdefs.c', line 3585
```
INTEGER2NUM(SO_SNDBUFFORCE)
```
SO_SNDLOWAT =

Send low-water mark

# File 'ext/socket/constdefs.c', line 3645
```
INTEGER2NUM(SO_SNDLOWAT)
```
SO_SNDTIMEO =

Send timeout

# File 'ext/socket/constdefs.c', line 3657
```
INTEGER2NUM(SO_SNDTIMEO)
```
SO_TIMESTAMP =

Receive timestamp with datagrams (timeval)

# File 'ext/socket/constdefs.c', line 3765
```
INTEGER2NUM(SO_TIMESTAMP)
```
SO_TIMESTAMPING =

Time stamping of incoming and outgoing packets (Linux 2.6.30)

# File 'ext/socket/constdefs.c', line 3819
```
INTEGER2NUM(SO_TIMESTAMPING)
```
SO_TIMESTAMPNS =

Receive nanosecond timestamp with datagrams (timespec)

# File 'ext/socket/constdefs.c', line 3771
```
INTEGER2NUM(SO_TIMESTAMPNS)
```
SO_TYPE =

Get the socket type

# File 'ext/socket/constdefs.c', line 3549
```
INTEGER2NUM(SO_TYPE)
```
SO_USELOOPBACK =

Bypass hardware when possible

# File 'ext/socket/constdefs.c', line 3669
```
INTEGER2NUM(SO_USELOOPBACK)
```
SO_WANTMORE =

Give a hint when more data is ready

# File 'ext/socket/constdefs.c', line 3687
```
INTEGER2NUM(SO_WANTMORE)
```
SO_WANTOOBFLAG =

OOB data is wanted in MSG_FLAG on receive

# File 'ext/socket/constdefs.c', line 3693
```
INTEGER2NUM(SO_WANTOOBFLAG)
```
SO_WIFI_STATUS =

Toggle cmsg for wifi status (Linux 3.3)

# File 'ext/socket/constdefs.c', line 3843
```
INTEGER2NUM(SO_WIFI_STATUS)
```
TCP_CONGESTION =

TCP congestion control algorithm (Linux 2.6.13, glibc 2.6)

# File 'ext/socket/constdefs.c', line 4011
```
INTEGER2NUM(TCP_CONGESTION)
```
TCP_COOKIE_TRANSACTIONS =

TCP Cookie Transactions (Linux 2.6.33, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4017
```
INTEGER2NUM(TCP_COOKIE_TRANSACTIONS)
```
TCP_CORK =

Don’t send partial frames (Linux 2.2, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3927
```
INTEGER2NUM(TCP_CORK)
```
TCP_DEFER_ACCEPT =

Don’t notify a listening socket until data is ready (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3933
```
INTEGER2NUM(TCP_DEFER_ACCEPT)
```
TCP_FASTOPEN =

Reduce step of the handshake process (Linux 3.7, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4005
```
INTEGER2NUM(TCP_FASTOPEN)
```
TCP_INFO =

Retrieve information about this socket (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3939
```
INTEGER2NUM(TCP_INFO)
```
TCP_KEEPCNT =

Maximum number of keepalive probes allowed before dropping a connection (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3945
```
INTEGER2NUM(TCP_KEEPCNT)
```
TCP_KEEPIDLE =

Idle time before keepalive probes are sent (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3951
```
INTEGER2NUM(TCP_KEEPIDLE)
```
TCP_KEEPINTVL =

Time between keepalive probes (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3957
```
INTEGER2NUM(TCP_KEEPINTVL)
```
TCP_LINGER2 =

Lifetime of orphaned FIN_WAIT2 sockets (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3963
```
INTEGER2NUM(TCP_LINGER2)
```
TCP_MAXSEG =

Set maximum segment size

# File 'ext/socket/constdefs.c', line 3921
```
INTEGER2NUM(TCP_MAXSEG)
```
TCP_MD5SIG =

Use MD5 digests (RFC2385, Linux 2.6.20, glibc 2.7)

# File 'ext/socket/constdefs.c', line 3969
```
INTEGER2NUM(TCP_MD5SIG)
```
TCP_NODELAY =

Don’t delay sending to coalesce packets

# File 'ext/socket/constdefs.c', line 3915
```
INTEGER2NUM(TCP_NODELAY)
```
TCP_NOOPT =

Don’t use TCP options

# File 'ext/socket/constdefs.c', line 3975
```
INTEGER2NUM(TCP_NOOPT)
```
TCP_NOPUSH =

Don’t push the last block of write

# File 'ext/socket/constdefs.c', line 3981
```
INTEGER2NUM(TCP_NOPUSH)
```
TCP_QUEUE_SEQ =

Sequence of a queue for repair mode (Linux 3.5, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4023
```
INTEGER2NUM(TCP_QUEUE_SEQ)
```
TCP_QUICKACK =

Enable quickack mode (Linux 2.4.4, glibc 2.3)

# File 'ext/socket/constdefs.c', line 3987
```
INTEGER2NUM(TCP_QUICKACK)
```
TCP_REPAIR =

Repair mode (Linux 3.5, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4029
```
INTEGER2NUM(TCP_REPAIR)
```
TCP_REPAIR_OPTIONS =

Options for repair mode (Linux 3.5, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4035
```
INTEGER2NUM(TCP_REPAIR_OPTIONS)
```
TCP_REPAIR_QUEUE =

Queue for repair mode (Linux 3.5, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4041
```
INTEGER2NUM(TCP_REPAIR_QUEUE)
```
TCP_SYNCNT =

Number of SYN retransmits before a connection is dropped (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3993
```
INTEGER2NUM(TCP_SYNCNT)
```
TCP_THIN_DUPACK =

Duplicated acknowledgments handling for thin-streams (Linux 2.6.34, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4047
```
INTEGER2NUM(TCP_THIN_DUPACK)
```
TCP_THIN_LINEAR_TIMEOUTS =

Linear timeouts for thin-streams (Linux 2.6.34, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4053
```
INTEGER2NUM(TCP_THIN_LINEAR_TIMEOUTS)
```
TCP_TIMESTAMP =

TCP timestamp (Linux 3.9, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4059
```
INTEGER2NUM(TCP_TIMESTAMP)
```
TCP_USER_TIMEOUT =

Max timeout before a TCP connection is aborted (Linux 2.6.37, glibc 2.18)

# File 'ext/socket/constdefs.c', line 4065
```
INTEGER2NUM(TCP_USER_TIMEOUT)
```
TCP_WINDOW_CLAMP =

Clamp the size of the advertised window (Linux 2.4, glibc 2.2)

# File 'ext/socket/constdefs.c', line 3999
```
INTEGER2NUM(TCP_WINDOW_CLAMP)
```
UDP_CORK =

Don’t send partial frames (Linux 2.5.44, glibc 2.11)

# File 'ext/socket/constdefs.c', line 4071
```
INTEGER2NUM(UDP_CORK)
```