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/ Mojo::Headers

NAME

Mojo::Headers - Headers

SYNOPSIS

use Mojo::Headers;

# Parse
my $headers = Mojo::Headers->new;
$headers->parse("Content-Length: 42\x0d\x0a");
$headers->parse("Content-Type: text/html\x0d\x0a\x0d\x0a");
say $headers->content_length;
say $headers->content_type;

# Build
my $headers = Mojo::Headers->new;
$headers->content_length(42);
$headers->content_type('text/plain');
say $headers->to_string;

DESCRIPTION

Mojo::Headers is a container for HTTP headers as described in RFC 2616.

ATTRIBUTES

Mojo::Headers implements the following attributes.

max_line_size

my $size = $headers->max_line_size;
$headers = $headers->max_line_size(1024);

Maximum header line size in bytes, defaults to the value of the MOJO_MAX_LINE_SIZE environment variable or 10240.

METHODS

Mojo::Headers inherits all methods from Mojo::Base and implements the following new ones.

accept

my $accept = $headers->accept;
$headers   = $headers->accept('application/json');

Shortcut for the Accept header.

accept_charset

my $charset = $headers->accept_charset;
$headers    = $headers->accept_charset('UTF-8');

Shortcut for the Accept-Charset header.

accept_encoding

my $encoding = $headers->accept_encoding;
$headers     = $headers->accept_encoding('gzip');

Shortcut for the Accept-Encoding header.

accept_language

my $language = $headers->accept_language;
$headers     = $headers->accept_language('de, en');

Shortcut for the Accept-Language header.

accept_ranges

my $ranges = $headers->accept_ranges;
$headers   = $headers->accept_ranges('bytes');

Shortcut for the Accept-Ranges header.

add

$headers = $headers->add(Foo => 'one value');
$headers = $headers->add(Foo => 'first value', 'second value');
$headers = $headers->add(Foo => ['first line', 'second line']);

Add one or more header values with one or more lines.

# "Vary: Accept"
# "Vary: Accept-Encoding"
$headers->vary('Accept')->add(Vary => 'Accept-Encoding')->to_string;

allow

my $allow = $headers->allow;
$headers  = $headers->allow('GET, POST');

Shortcut for the Allow header.

append

$headers = $headers->append(Vary => 'Accept-Encoding');

Append value to header and flatten it if necessary.

# "Vary: Accept"
$headers->append(Vary => 'Accept')->to_string;

# "Vary: Accept, Accept-Encoding"
$headers->vary('Accept')->append(Vary => 'Accept-Encoding')->to_string;

authorization

my $authorization = $headers->authorization;
$headers          = $headers->authorization('Basic Zm9vOmJhcg==');

Shortcut for the Authorization header.

cache_control

my $cache_control = $headers->cache_control;
$headers          = $headers->cache_control('max-age=1, no-cache');

Shortcut for the Cache-Control header.

clone

my $clone = $headers->clone;

Clone headers.

connection

my $connection = $headers->connection;
$headers       = $headers->connection('close');

Shortcut for the Connection header.

content_disposition

my $disposition = $headers->content_disposition;
$headers        = $headers->content_disposition('foo');

Shortcut for the Content-Disposition header.

content_encoding

my $encoding = $headers->content_encoding;
$headers     = $headers->content_encoding('gzip');

Shortcut for the Content-Encoding header.

content_length

my $len  = $headers->content_length;
$headers = $headers->content_length(4000);

Shortcut for the Content-Length header.

content_range

my $range = $headers->content_range;
$headers  = $headers->content_range('bytes 2-8/100');

Shortcut for the Content-Range header.

content_type

my $type = $headers->content_type;
$headers = $headers->content_type('text/plain');

Shortcut for the Content-Type header.

my $cookie = $headers->cookie;
$headers   = $headers->cookie('f=b');

Shortcut for the Cookie header from RFC 6265.

date

my $date = $headers->date;
$headers = $headers->date('Sun, 17 Aug 2008 16:27:35 GMT');

Shortcut for the Date header.

dnt

my $dnt  = $headers->dnt;
$headers = $headers->dnt(1);

Shortcut for the DNT (Do Not Track) header, which has no specification yet, but is very commonly used.

etag

my $etag = $headers->etag;
$headers = $headers->etag('abc321');

Shortcut for the ETag header.

expect

my $expect = $headers->expect;
$headers   = $headers->expect('100-continue');

Shortcut for the Expect header.

expires

my $expires = $headers->expires;
$headers    = $headers->expires('Thu, 01 Dec 1994 16:00:00 GMT');

Shortcut for the Expires header.

from_hash

$headers = $headers->from_hash({'Content-Type' => 'text/html'});
$headers = $headers->from_hash({});

Parse headers from a hash reference, an empty hash removes all headers.

my $value  = $headers->header('Foo');
my @values = $headers->header('Foo');
$headers   = $headers->header(Foo => 'one value');
$headers   = $headers->header(Foo => 'first value', 'second value');
$headers   = $headers->header(Foo => ['first line', 'second line']);

Get or replace the current header values.

# Multiple headers with the same name
for my $header ($headers->header('Set-Cookie')) {
  say 'Set-Cookie:';

  # Multiple lines per header
  say for @$header;
}

host

my $host = $headers->host;
$headers = $headers->host('127.0.0.1');

Shortcut for the Host header.

if_modified_since

my $date = $headers->if_modified_since;
$headers = $headers->if_modified_since('Sun, 17 Aug 2008 16:27:35 GMT');

Shortcut for the If-Modified-Since header.

is_finished

my $bool = $headers->is_finished;

Check if header parser is finished.

is_limit_exceeded

my $bool = $headers->is_limit_exceeded;

Check if a header has exceeded max_line_size.

last_modified

my $date = $headers->last_modified;
$headers = $headers->last_modified('Sun, 17 Aug 2008 16:27:35 GMT');

Shortcut for the Last-Modified header.

leftovers

my $bytes = $headers->leftovers;

Get leftover data from header parser.

my $link = $headers->link;
$headers = $headers->link('<http://127.0.0.1/foo/3>; rel="next"');

Shortcut for the Link header from RFC 5988.

location

my $location = $headers->location;
$headers     = $headers->location('http://127.0.0.1/foo');

Shortcut for the Location header.

names

my $names = $headers->names;

Return a list of all currently defined headers.

# Names of all headers
say for @{$headers->names};

origin

my $origin = $headers->origin;
$headers   = $headers->origin('http://example.com');

Shortcut for the Origin header from RFC 6454.

parse

$headers = $headers->parse("Content-Type: text/plain\x0d\x0a\x0d\x0a");

Parse formatted headers.

proxy_authenticate

my $authenticate = $headers->proxy_authenticate;
$headers         = $headers->proxy_authenticate('Basic "realm"');

Shortcut for the Proxy-Authenticate header.

proxy_authorization

my $authorization = $headers->proxy_authorization;
$headers          = $headers->proxy_authorization('Basic Zm9vOmJhcg==');

Shortcut for the Proxy-Authorization header.

range

my $range = $headers->range;
$headers  = $headers->range('bytes=2-8');

Shortcut for the Range header.

referrer

my $referrer = $headers->referrer;
$headers     = $headers->referrer('http://example.com');

Shortcut for the Referer header, there was a typo in RFC 2068 which resulted in Referer becoming an official header.

remove

$headers = $headers->remove('Foo');

Remove a header.

sec_websocket_accept

my $accept = $headers->sec_websocket_accept;
$headers   = $headers->sec_websocket_accept('s3pPLMBiTxaQ9kYGzzhZRbK+xOo=');

Shortcut for the Sec-WebSocket-Accept header from RFC 6455.

sec_websocket_extensions

my $extensions = $headers->sec_websocket_extensions;
$headers       = $headers->sec_websocket_extensions('foo');

Shortcut for the Sec-WebSocket-Extensions header from RFC 6455.

sec_websocket_key

my $key  = $headers->sec_websocket_key;
$headers = $headers->sec_websocket_key('dGhlIHNhbXBsZSBub25jZQ==');

Shortcut for the Sec-WebSocket-Key header from RFC 6455.

sec_websocket_protocol

my $proto = $headers->sec_websocket_protocol;
$headers  = $headers->sec_websocket_protocol('sample');

Shortcut for the Sec-WebSocket-Protocol header from RFC 6455.

sec_websocket_version

my $version = $headers->sec_websocket_version;
$headers    = $headers->sec_websocket_version(13);

Shortcut for the Sec-WebSocket-Version header from RFC 6455.

server

my $server = $headers->server;
$headers   = $headers->server('Mojo');

Shortcut for the Server header.

my $cookie = $headers->set_cookie;
$headers   = $headers->set_cookie('f=b; path=/');

Shortcut for the Set-Cookie header from RFC 6265.

status

my $status = $headers->status;
$headers   = $headers->status('200 OK');

Shortcut for the Status header from RFC 3875.

te

my $te   = $headers->te;
$headers = $headers->te('chunked');

Shortcut for the TE header.

to_hash

my $single = $headers->to_hash;
my $multi  = $headers->to_hash(1);

Turn headers into hash reference, nested array references to represent multiline values are disabled by default.

say $headers->to_hash->{DNT};

to_string

my $str = $headers->to_string;

Turn headers into a string, suitable for HTTP messages.

trailer

my $trailer = $headers->trailer;
$headers    = $headers->trailer('X-Foo');

Shortcut for the Trailer header.

transfer_encoding

my $encoding = $headers->transfer_encoding;
$headers     = $headers->transfer_encoding('chunked');

Shortcut for the Transfer-Encoding header.

upgrade

my $upgrade = $headers->upgrade;
$headers    = $headers->upgrade('websocket');

Shortcut for the Upgrade header.

user_agent

my $agent = $headers->user_agent;
$headers  = $headers->user_agent('Mojo/1.0');

Shortcut for the User-Agent header.

vary

my $vary = $headers->vary;
$headers = $headers->vary('*');

Shortcut for the Vary header.

www_authenticate

my $authenticate = $headers->www_authenticate;
$headers         = $headers->www_authenticate('Basic realm="realm"');

Shortcut for the WWW-Authenticate header.

SEE ALSO

Mojolicious, Mojolicious::Guides, http://mojolicio.us.