1 # Copyright (C) 2016-2018 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # Wrap a pipe or file for PSGI streaming response bodies and calls the
5 # end callback when the object goes out-of-scope.
6 # This depends on rpipe being _blocking_ on getline.
8 # public-inbox-httpd favors "getline" response bodies to take a
9 # "pull"-based approach to feeding slow clients (as opposed to a
10 # more common "push" model)
11 package PublicInbox::GetlineBody;
16 my ($class, $rpipe, $end, $buf) = @_;
17 bless { rpipe => $rpipe, end => $end, buf => $buf }, $class;
20 # close should always be called after getline returns undef,
21 # but a client aborting a connection can ruin our day; so lets
22 # hope our underlying PSGI server does not leak references, here.
23 sub DESTROY { $_[0]->close }
27 my $buf = delete $self->{buf}; # initial buffer
28 defined $buf ? $buf : $self->{rpipe}->getline;
33 my $rpipe = delete $self->{rpipe};
34 close $rpipe if $rpipe;
35 my $end = delete $self->{end};