This is just a personnal note of documentation for socket types managed by linux. All sockets types are declared under the file include/linux/socket.h :
- AF_UNSPEC 0
- AF_UNIX 1 /* Unix domain sockets */
- AF_LOCAL 1 /* POSIX name for AF_UNIX */
- AF_INET 2 /* Internet IP Protocol */
- AF_AX25 3 /* Amateur Radio AX.25 */
- AF_IPX 4 /* Novell IPX */
- AF_APPLETALK 5 /* AppleTalk DDP */
- AF_NETROM 6 /* Amateur Radio NET/ROM */
- AF_BRIDGE 7 /* Multiprotocol bridge ???? */
- AF_ATMPVC 8 /* ATM PVCs */
- AF_X25 9 /* Reserved for X.25 project */
- AF_INET6 10 /* IP version 6 */
- AF_ROSE 11 /* Amateur Radio X.25 PLP */
- AF_DECnet 12 /* Reserved for DECnet project */
- AF_NETBEUI 13 /* Reserved for 802.2LLC project*/
- AF_SECURITY14/* Security callback pseudo AF ????*/
- AF_KEY 15 /* PF_KEY key management API */
- AF_NETLINK 16
- AF_PACKET 17 /* Packet family */
- AF_ASH 18 /* Ash ???? */
- AF_ECONET 19 /* Acorn Econet */
- AF_ATMSVC 20 /* ATM SVCs */
- AF_RDS 21 /* RDS sockets */
- AF_SNA 22 /* Linux SNA Project (nutters!) */
- AF_IRDA 23 /* IRDA sockets */
- AF_PPPOX 24 /* PPPoX sockets */
- AF_WANPIPE 25 /* Wanpipe API Sockets */
- AF_LLC 26 /* Linux LLC */
- AF_CAN 29 /* Controller Area Network */
- AF_TIPC 30 /* TIPC sockets */
- AF_BLUETOOTH 31 /* Bluetooth sockets */
- AF_IUCV 32 /* IUCV sockets */
- AF_RXRPC 33 /* RxRPC sockets */
- AF_ISDN 34 /* mISDN sockets */
- AF_PHONET 35 /* Phonet sockets */
- AF_IEEE802154 36 /* IEEE802154 sockets */
- AF_CAIF 37 /* CAIF sockets */
- AF_MAX 38 /* For now.. */
