Net::Server::Fork(3pm)

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

6       Net::Server::Fork - Net::Server personality
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SYNOPSIS

9           use base qw(Net::Server::Fork);
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11           sub process_request {
12               #...code...
13           }
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15           __PACKAGE__->run();
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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.
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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.
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25       With the exception of parent/child signaling, this module will work
26       (with basic functionality) on Win32 systems.
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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.
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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.
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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.
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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.
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CONFIGURATION FILE

51       See Net::Server.
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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.
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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
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62       "$self->pre_accept_hook()"
63           This hook occurs just before the accept is called.
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65       "$self->post_accept_hook()"
66           This hook occurs in the child after the accept and fork.
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68       "$self->run_dequeue()"
69           This hook only gets called in conjunction with the
70           check_for_dequeue setting.
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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.
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AUTHOR

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