Mojo::Message - HTTP 1.1 message base class
use Mojo::Base 'Mojo::Message';
Mojo::Message is an abstract base class for HTTP 1.1 messages as described in RFC 2616 and RFC 2388.
Mojo::Message can emit the following events.
finish $message->on(finish => sub {
my $message = shift;
...
});
Emitted after message building or parsing is finished.
my $before = time;
$message->on(finish => sub {
my $message = shift;
$message->headers->header('X-Parser-Time' => time - $before);
});
progress $message->on(progress => sub {
my $message = shift;
...
});
Emitted when message building or parsing makes progress.
# Building
$message->on(progress => sub {
my ($message, $state, $offset) = @_;
say qq{Building "$state" at offset $offset};
});
# Parsing
$message->on(progress => sub {
my $message = shift;
return unless my $len = $message->headers->content_length;
my $size = $message->content->progress;
say 'Progress: ', $size == $len ? 100 : int($size / ($len / 100)), '%';
});
Mojo::Message implements the following attributes.
contentmy $message = $message->content; $message = $message->content(Mojo::Content::Single->new);
Content container, defaults to a Mojo::Content::Single object.
default_charset my $charset = $message->default_charset;
$message = $message->default_charset('UTF-8');
Default charset used for form data parsing, defaults to UTF-8.
dom_class my $class = $message->dom_class;
$message = $message->dom_class('Mojo::DOM');
Class to be used for DOM manipulation with the dom method, defaults to Mojo::DOM.
json_class my $class = $message->json_class;
$message = $message->json_class('Mojo::JSON');
Class to be used for JSON deserialization with the json method, defaults to Mojo::JSON.
max_message_sizemy $size = $message->max_message_size; $message = $message->max_message_size(1024);
Maximum message size in bytes, defaults to the value of the MOJO_MAX_MESSAGE_SIZE environment variable or 5242880. Note that increasing this value can also drastically increase memory usage, should you for example attempt to parse an excessively large message body with the body_params, dom or json methods.
version my $version = $message->version;
$message = $message->version('1.1');
HTTP version of message.
Mojo::Message inherits all methods from Mojo::EventEmitter and implements the following new ones.
at_least_version my $success = $message->at_least_version('1.1');
Check if message is at least a specific version.
body my $string = $message->body;
$message = $message->body('Hello!');
my $cb = $message->body(sub {...});
Access content data or replace all subscribers of the read event.
$message->body(sub {
my ($message, $chunk) = @_;
say "Streaming: $chunk";
});
body_paramsmy $p = $message->body_params;
POST parameters extracted from x-application-urlencoded, application/x-www-form-urlencoded or multipart/form-data message body, usually a Mojo::Parameters object. Note that this method caches all data, so it should not be called before the entire message body has been received.
say $message->body_params->param('foo');
body_sizemy $size = $message->body_size;
Alias for "body_size" in Mojo::Content.
build_bodymy $string = $message->build_body;
Render whole body.
build_headersmy $string = $message->build_headers;
Render all headers.
build_start_linemy $string = $message->build_start_line;
Render start line.
cookie my $cookie = $message->cookie('foo');
my @cookies = $message->cookie('foo');
Access message cookies, usually Mojo::Cookie::Request or Mojo::Cookie::Response objects. Note that this method caches all data, so it should not be called before all headers have been received.
say $message->cookie('foo')->value;
cookiesmy $cookies = $message->cookies;
Access message cookies, meant to be overloaded in a subclass.
dom my $dom = $message->dom;
my $collection = $message->dom('a[href]');
Turns message body into a Mojo::DOM object and takes an optional selector to perform a find on it right away, which returns a collection.
# Perform "find" right away
$message->dom('h1, h2, h3')->each(sub { say $_->text });
# Use everything else Mojo::DOM has to offer
say $message->dom->at('title')->text;
$message->dom->html->body->children->each(sub { say $_->type });
error my $message = $message->error;
my ($message, $code) = $message->error;
$message = $message->error('Parser error.');
$message = $message->error('Parser error.', 500);
Parser errors and codes.
fix_headers$message = $message->fix_headers;
Make sure message has all required headers for the current HTTP version.
get_body_chunkmy $string = $message->get_body_chunk($offset);
Get a chunk of body data starting from a specific position.
get_header_chunkmy $string = $message->get_header_chunk($offset);
Get a chunk of header data, starting from a specific position.
get_start_line_chunkmy $string = $message->get_start_line_chunk($offset);
Get a chunk of start line data starting from a specific position.
has_leftoversmy $success = $message->has_leftovers;
Alias for "has_leftovers" in Mojo::Content.
header_sizemy $size = $message->header_size;
Size of headers in bytes.
headersmy $headers = $message->headers;
Alias for "headers" in Mojo::Content.
say $message->headers->content_type;
is_chunkedmy $success = $message->is_chunked;
Alias for "is_chunked" in Mojo::Content.
is_dynamicmy $success = $message->is_dynamic;
Alias for "is_dynamic" in Mojo::Content.
is_finishedmy $success = $message->is_finished;
Check if parser is finished.
is_limit_exceededmy $success = $message->is_limit_exceeded;
Check if message has exceeded max_line_size or max_message_size.
is_multipartmy $success = $message->is_multipart;
Alias for "is_multipart" in Mojo::Content.
json my $hash = $message->json;
my $array = $message->json;
my $value = $message->json('/foo/bar');
Decode JSON message body directly using Mojo::JSON if possible, returns undef otherwise. An optional JSON Pointer can be used to extract a specific value with Mojo::JSON::Pointer.
say $message->json->{foo}{bar}[23];
say $message->json('/foo/bar/23');
leftoversmy $bytes = $message->leftovers;
Alias for "leftovers" in Mojo::Content.
max_line_size$message->max_line_size(1024);
Alias for "max_line_size" in Mojo::Headers.
param my @names = $message->param;
my $foo = $message->param('foo');
my @foo = $message->param('foo');
Access POST parameters. Note that this method caches all data, so it should not be called before the entire message body has been received.
parse $message = $message->parse('HTTP/1.1 200 OK...');
Parse message chunk.
parse_until_body $message = $message->parse_until_body('HTTP/1.1 200 OK...');
Parse message chunk until the body is reached.
start_line_sizemy $size = $message->start_line_size;
Size of the start line in bytes.
to_stringmy $string = $message->to_string;
Render whole message.
upload my $upload = $message->upload('foo');
my @uploads = $message->upload('foo');
Access multipart/form-data file uploads, usually Mojo::Upload objects. Note that this method caches all data, so it should not be called before the entire message body has been received.
say $message->upload('foo')->asset->slurp;
uploadsmy $uploads = $message->uploads;
All multipart/form-data file uploads, usually Mojo::Upload objects.
say $message->uploads->[2]->filename;
write $message->write('Hello!');
$message->write('Hello!', sub {...});
Alias for "write" in Mojo::Content.
write_chunk $message->write_chunk('Hello!');
$message->write_chunk('Hello!', sub {...});
Alias for "write_headers" in Mojo::Content.
