1Catalyst::Engine(3) User Contributed Perl Documentation Catalyst::Engine(3)
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6 Catalyst::Engine - The Catalyst Engine
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9 See Catalyst.
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13 $self->finalize_body($c)
14 Finalize body. Prints the response output as blocking stream if it
15 looks like a filehandle, otherwise write it out all in one go. If
16 there is no body in the response, we assume you are handling it
17 'manually', such as for nonblocking style or asynchronous streaming
18 responses. You do this by calling "write" several times (which sends
19 HTTP headers if needed) or you close over "$response->write_fh".
20 See "write" in Catalyst::Response and "write_fh" in Catalyst::Response
22 for more.
23 $self->finalize_cookies($c)
25 Create CGI::Simple::Cookie objects from $c->res->cookies, and set them
26 as response headers.
27 $self->finalize_error($c)
29 Output an appropriate error message. Called if there's an error in $c
30 after the dispatch has finished. Will output debug messages if Catalyst
31 is in debug mode, or a `please come back later` message otherwise.
32 $self->finalize_headers($c)
34 Allows engines to write headers to response
35 $self->finalize_uploads($c)
37 Clean up after uploads, deleting temp files.
38 $self->prepare_body($c)
40 sets up the Catalyst::Request object body using HTTP::Body
41 $self->prepare_body_chunk($c)
43 Add a chunk to the request body.
44 $self->prepare_body_parameters($c)
46 Sets up parameters from body.
47 $self->prepare_parameters($c)
49 Sets up parameters from query and post parameters. If parameters have
50 already been set up will clear existing parameters and set up again.
51 $self->prepare_path($c)
53 abstract method, implemented by engines.
54 $self->prepare_request($c)
56 $self->prepare_query_parameters($c)
57 process the query string and extract query parameters.
58 $self->prepare_read($c)
60 Prepare to read by initializing the Content-Length from headers.
61 $self->prepare_request(@arguments)
63 Populate the context object from the request object.
64 $self->prepare_uploads($c)
66 $self->write($c, $buffer)
67 Writes the buffer to the client.
68 $self->unencoded_write($c, $buffer)
70 Writes the buffer to the client without encoding. Necessary for already
71 encoded buffers. Used when a $c->write has been done followed by
72 $c->res->body.
73 $self->read($c, [$maxlength])
75 Reads from the input stream by calling "$self->read_chunk".
76 Maintains the read_length and read_position counters as data is read.
78 $self->read_chunk($c, \$buffer, $length)
80 Each engine implements read_chunk as its preferred way of reading a
81 chunk of data. Returns the number of bytes read. A return of 0
82 indicates that there is no more data to be read.
83 $self->run($app, $server)
85 Start the engine. Builds a PSGI application and calls the run method on
86 the server passed in, which then causes the engine to loop, handling
87 requests..
88 build_psgi_app ($app, @args)
90 Builds and returns a PSGI application closure. (Raw, not wrapped in
91 middleware)
92 $self->unescape_uri($uri)
94 Unescapes a given URI using the most efficient method available.
95 Engines such as Apache may implement this using Apache's C-based
96 modules, for example.
97 $self->finalize_output
99 <obsolete>, see finalize_body
100 $self->env
102 Hash containing environment variables including many special variables
103 inserted by WWW server - like SERVER_*, REMOTE_*, HTTP_* ...
104 Before accessing environment variables consider whether the same
106 information is not directly available via Catalyst objects $c->request,
107 $c->engine ...
108 BEWARE: If you really need to access some environment variable from
110 your Catalyst application you should use $c->engine->env->{VARNAME}
111 instead of $ENV{VARNAME}, as in some environments the %ENV hash does
112 not contain what you would expect.
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115 Catalyst Contributors, see Catalyst.pm
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118 This library is free software. You can redistribute it and/or modify it
119 under the same terms as Perl itself.
120perl v5.34.0 2021-07-22 Catalyst::Engine(3)