1Dancer2::Core::ResponseU:s:eDrelCaoynetdr(i3b)uted PerlDDaonccuemre2n:t:aCtoiroen::Response::Delayed(3)
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NAME

6       Dancer2::Core::Response::Delayed - Delayed responses
7

VERSION

9       version 0.300000
10

SYNOPSIS

12           my $response = Dancer2::Core::Response::Delayed->new(
13               request   => Dancer2::Core::Request->new(...),
14               response  => Dancer2::Core::Response->new(...),
15               cb        => sub {...},
16
17               # optional error handling
18               error_cb  => sub {
19                   my ($error) = @_;
20                   ...
21               },
22           );
23
24           # or in an app
25           get '/' => sub {
26               # delayed response:
27               delayed {
28                   # streaming content
29                   content "data";
30                   content "more data";
31
32                   # close user connection
33                   done;
34               } on_error => sub {
35                   my ($error) = @_;
36                   warning 'Failed to stream to user: ' . request->remote_address;
37               };
38           };
39

DESCRIPTION

41       This object represents a delayed (asynchronous) response for Dancer2.
42       It can be used via the "delayed" keyword.
43
44       It keeps references to a request and a response in order to avoid
45       keeping a reference to the application.
46

ATTRIBUTES

48   request
49       Contains a request the delayed response uses.
50
51       In the context of a web request, this will be the request that existed
52       when the delayed response has been created.
53
54   response
55       Contains a response the delayed response uses.
56
57       In the context of a web request, this will be the response that existed
58       when the delayed response has been created.
59
60   cb
61       The code that will be run asynchronously.
62
63   error_cb
64       A callback for handling errors. This callback receives the error as its
65       first (and currently only) parameter.
66

METHODS

68   is_halted
69       A method indicating whether the response has halted.
70
71       This is useless in the context of an asynchronous request so it simply
72       returns no.
73
74       This method is likely going away.
75
76   has_passed
77       A method indicating whether the response asked to skip the current
78       response.
79
80       This is useless in the context of an asynchronous request so it simply
81       returns no.
82
83       This method is likely going away.
84
85   to_psgi
86       Create a PSGI response. The way it works is by returning a proper PSGI
87       response subroutine which localizes the request and response (in case
88       the callback wants to edit them without a reference to them), and then
89       calls the callback.
90
91       Finally, when the callback is done, it asks the response (whether it
92       was changed or not) to create its own PSGI response (calling "to_psgi")
93       and sends that to the callback it receives as a delayed response.
94

AUTHOR

96       Dancer Core Developers
97

99       This software is copyright (c) 2019 by Alexis Sukrieh.
100
101       This is free software; you can redistribute it and/or modify it under
102       the same terms as the Perl 5 programming language system itself.
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106perl v5.30.1                      2020-01-29Dancer2::Core::Response::Delayed(3)
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