# The EventUtil class

&reftitle.intro;

`EventUtil` is a singleton with supplimentary methods and constants.

&reftitle.classsynopsis;

         EventUtil

          final
          EventUtil

        &Constants;

         const
         int
         EventUtil::AF_INET
         2

         const
         int
         EventUtil::AF_INET6
         10

         const
         int
         EventUtil::AF_UNSPEC
         0

         const
         int
         EventUtil::LIBEVENT_VERSION_NUMBER
         33559808

         const
         int
         EventUtil::SO_DEBUG
         1

         const
         int
         EventUtil::SO_REUSEADDR
         2

         const
         int
         EventUtil::SO_KEEPALIVE
         9

         const
         int
         EventUtil::SO_DONTROUTE
         5

         const
         int
         EventUtil::SO_LINGER
         13

         const
         int
         EventUtil::SO_BROADCAST
         6

         const
         int
         EventUtil::SO_OOBINLINE
         10

         const
         int
         EventUtil::SO_SNDBUF
         7

         const
         int
         EventUtil::SO_RCVBUF
         8

         const
         int
         EventUtil::SO_SNDLOWAT
         19

         const
         int
         EventUtil::SO_RCVLOWAT
         18

         const
         int
         EventUtil::SO_SNDTIMEO
         21

         const
         int
         EventUtil::SO_RCVTIMEO
         20

         const
         int
         EventUtil::SO_TYPE
         3

         const
         int
         EventUtil::SO_ERROR
         4

         const
         int
         EventUtil::SOL_SOCKET
         1

         const
         int
         EventUtil::SOL_TCP
         6

         const
         int
         EventUtil::SOL_UDP
         17

         const
         int
         EventUtil::IPPROTO_IP
         0

         const
         int
         EventUtil::IPPROTO_IPV6
         41

        &Methods;

&reftitle.constants;

`EventUtil::AF_INET`

- IPv4 address family

`EventUtil::AF_INET6`

- IPv6 address family

`EventUtil::AF_UNSPEC`

- Unspecified IP address family

`EventUtil::SO_DEBUG`

- Socket option. Enable socket debugging. Only allowed for processes with the `CAP_NET_ADMIN` capability or an effective user ID of `0` . (Added in event-1.6.0.)

`EventUtil::SO_REUSEADDR`

- Socket option. Indicates that the rules used in validating addresses supplied in a `bind(2)` call should allow reuse of local addresses. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_KEEPALIVE`

- Socket option. Enable sending of keep-alive messages on connection-oriented sockets. Expects an integer boolean flag. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_DONTROUTE`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_LINGER`

- Socket option. When enabled, a `close(2)` or `shutdown(2)` will not return until all queued messages for the socket have been successfully sent or the linger timeout has been reached. Otherwise, the call returns immediately and the closing is done in the background. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_BROADCAST`

- Socket option. Reports whether transmission of broadcast messages is supported. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_OOBINLINE`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_SNDBUF`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_RCVBUF`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_SNDLOWAT`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_RCVLOWAT`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_SNDTIMEO`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_RCVTIMEO`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_TYPE`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SO_ERROR`

- Socket option. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SOL_SOCKET`

- Socket option level. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SOL_TCP`

- Socket option level. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::SOL_UDP`

- Socket option level. See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::IPPROTO_IP`

- See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::IPPROTO_IPV6`

- See the `socket(7)` manual page. (Added in event-1.6.0.)

`EventUtil::LIBEVENT_VERSION_NUMBER`

- Libevent' version number at the time when Event extension had been compiled with the library.

&reference.event.entities.eventutil;