1Net::Server::Fork(3)  User Contributed Perl Documentation Net::Server::Fork(3)
2
3
4

NAME

6       Net::Server::Fork - Net::Server personality
7

SYNOPSIS

9           use base qw(Net::Server::Fork);
10
11           sub process_request {
12               #...code...
13           }
14
15           __PACKAGE__->run();
16

DESCRIPTION

18       Please read the pod on Net::Server first.  This module is a
19       personality, or extension, or sub class, of the Net::Server module.
20
21       This personality binds to one or more ports and then waits for a client
22       connection.  When a connection is received, the server forks a child.
23       The child handles the request and then closes.
24
25       With the exception of parent/child signaling, this module will work
26       (with basic functionality) on Win32 systems.
27

ARGUMENTS

29       check_for_dead
30           Number of seconds to wait before looking for dead children.  This
31           only takes place if the maximum number of child processes
32           (max_servers) has been reached.  Default is 60 seconds.
33
34       max_servers
35           The maximum number of children to fork.  The server will not accept
36           connections until there are free children. Default is 256 children.
37
38       max_dequeue
39           The maximum number of dequeue processes to start.  If a value of
40           zero or undef is given, no dequeue processes will be started.  The
41           number of running dequeue processes will be checked by the
42           check_for_dead variable.
43
44       check_for_dequeue
45           Seconds to wait before forking off a dequeue process.  It is
46           intended to use the dequeue process to take care of items such as
47           mail queues.  If a value of undef is given, no dequeue processes
48           will be started.
49

CONFIGURATION FILE

51       See Net::Server.
52

PROCESS FLOW

54       Process flow follows Net::Server until the post_accept phase.  At this
55       point a child is forked.  The parent is immediately able to wait for
56       another request.  The child handles the request and then exits.
57

HOOKS

59       The Fork server has the following hooks in addition to the hooks
60       provided by the Net::Server base class.  See Net::Server
61
62       "$self->pre_accept_hook()"
63           This hook occurs just before the accept is called.
64
65       "$self->post_accept_hook()"
66           This hook occurs in the child after the accept and fork.
67
68       "$self->run_dequeue()"
69           This hook only gets called in conjunction with the
70           check_for_dequeue setting.
71

HOT DEPLOY

73       Since version 2.000, the Fork server has accepted the TTIN and TTOU
74       signals.  When a TTIN is received, the max_servers is increased by 1.
75       If a TTOU signal is received the max_servers is decreased by 1.  This
76       allows for adjusting the number of handling processes without having to
77       restart the server.
78

AUTHOR

80       Paul Seamons <paul@seamons.com>
81
82       Rob Brown <bbb@cpan.org>
83

SEE ALSO

85       Please see also Net::Server::INET, Net::Server::PreFork,
86       Net::Server::MultiType, Net::Server::SIG Net::Server::Single
87
88
89
90perl v5.32.1                      2021-01-27              Net::Server::Fork(3)
Impressum