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socket-event(7)

upstart
2011-03-08

upstart

event-based init daemon - essential binaries

NAME

socket - event signalling that a socket connection has been made

SYNOPSIS

socket PROTO=PROTO PORT=PORT ADDR=ADDR
socket PROTO=PROTO SOCKET_PATH=PATH

DESCRIPTION

The socket event is generated by the upstart-socket-bridge(8) daemon when a socket connection is made whose details match the socket event condition and environment specified in a jobs start on or stop on stanza.
When an incoming connection is detected, the file descriptor representing the socket is passed to the job in question to allow it to accept(2) the connection. Additionally, the environment variable UPSTART_EVENTS will contain the name of the event ("socket") and the environment variable UPSTART_FDS will contain the number of the file descriptor corresponding to the listening socket.

EXAMPLES

Internet (IPv4) socket

Start web server when first client connects from localhost:

start on socket PROTO=inet PORT=80 ADDR=127.0.0.1

Internet (IPv6) socket

Start job when a client connects from localhost:

start on socket PROTO=inet6 PORT=80 ADDR=::1

Local socket

start on socket PROTO=unix SOCKET_PATH=/var/run/.s.pgsql.1234

Abstract socket

start on socket PROTO=unix SOCKET_PATH=@/at/upstart/example

AUTHOR

Written by Scott James Remnant <>
Manual page written by James Hunt <>

COPYRIGHT

Copyright © 2011 Canonical Ltd.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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