[ViewVC] Diff of: cvs/AnyEvent-HTTP/HTTP.pm

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.1 by root, Tue Jun 3 16:37:13 2008 UTC vs.
Revision 1.85 by root, Sun Jan 2 05:31:56 2011 UTC

…		…
3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client	3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client
4		4
5	=head1 SYNOPSIS	5	=head1 SYNOPSIS
6		6
7	use AnyEvent::HTTP;	7	use AnyEvent::HTTP;
		8
		9	http_get "http://www.nethype.de/", sub { print $_[1] };
		10
		11	# ... do something else here
8		12
9	=head1 DESCRIPTION	13	=head1 DESCRIPTION
10		14
11	This module is an L<AnyEvent> user, you need to make sure that you use and	15	This module is an L<AnyEvent> user, you need to make sure that you use and
12	run a supported event loop.	16	run a supported event loop.
13		17
		18	This module implements a simple, stateless and non-blocking HTTP
		19	client. It supports GET, POST and other request methods, cookies and more,
		20	all on a very low level. It can follow redirects supports proxies and
		21	automatically limits the number of connections to the values specified in
		22	the RFC.
		23
		24	It should generally be a "good client" that is enough for most HTTP
		25	tasks. Simple tasks should be simple, but complex tasks should still be
		26	possible as the user retains control over request and response headers.
		27
		28	The caller is responsible for authentication management, cookies (if
		29	the simplistic implementation in this module doesn't suffice), referer
		30	and other high-level protocol details for which this module offers only
		31	limited support.
		32
14	=head2 METHODS	33	=head2 METHODS
15		34
16	=over 4	35	=over 4
17		36
18	=cut	37	=cut
19		38
20	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
21		40
22	use strict;	41	use common::sense;
23	no warnings;
24		42
25	use Carp;	43	use Errno ();
26		44
27	use AnyEvent ();	45	use AnyEvent 5.0 ();
28	use AnyEvent::Util ();	46	use AnyEvent::Util ();
29	use AnyEvent::Socket ();
30	use AnyEvent::Handle ();	47	use AnyEvent::Handle ();
31		48
32	use base Exporter::;	49	use base Exporter::;
33		50
34	our $VERSION = '1.0';	51	our $VERSION = '1.5';
35		52
36	our @EXPORT = qw(http_get http_request);	53	our @EXPORT = qw(http_get http_post http_head http_request);
37		54
38	our $MAX_REDIRECTS = 10;
39	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	55	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
		56	our $MAX_RECURSE = 10;
40	our $MAX_PERSISTENT = 8;	57	our $MAX_PERSISTENT = 8;
41	our $PERSISTENT_TIMEOUT = 15;	58	our $PERSISTENT_TIMEOUT = 2;
42	our $TIMEOUT = 60;	59	our $TIMEOUT = 300;
43		60
44	# changing these is evil	61	# changing these is evil
45	our $MAX_PERSISTENT_PER_HOST = 2;	62	our $MAX_PERSISTENT_PER_HOST = 0;
46	our $MAX_PER_HOST = 4; # not respected yet :(	63	our $MAX_PER_HOST = 4;
		64
		65	our $PROXY;
		66	our $ACTIVE = 0;
47		67
48	my %KA_COUNT; # number of open keep-alive connections per host	68	my %KA_COUNT; # number of open keep-alive connections per host
		69	my %CO_SLOT; # number of open connections, and wait queue, per host
49		70
50	=item http_get $url, key => value..., $cb->($data, $headers)	71	=item http_get $url, key => value..., $cb->($data, $headers)
51		72
52	Executes an HTTP-GET request. See the http_request function for details on	73	Executes an HTTP-GET request. See the http_request function for details on
53	additional parameters.	74	additional parameters and the return value.
		75
		76	=item http_head $url, key => value..., $cb->($data, $headers)
		77
		78	Executes an HTTP-HEAD request. See the http_request function for details
		79	on additional parameters and the return value.
		80
		81	=item http_post $url, $body, key => value..., $cb->($data, $headers)
		82
		83	Executes an HTTP-POST request with a request body of C<$body>. See the
		84	http_request function for details on additional parameters and the return
		85	value.
54		86
55	=item http_request $method => $url, key => value..., $cb->($data, $headers)	87	=item http_request $method => $url, key => value..., $cb->($data, $headers)
56		88
57	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	89	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
58	must be an absolute http or https URL.	90	must be an absolute http or https URL.
59		91
		92	When called in void context, nothing is returned. In other contexts,
		93	C<http_request> returns a "cancellation guard" - you have to keep the
		94	object at least alive until the callback get called. If the object gets
		95	destroyed before the callback is called, the request will be cancelled.
		96
		97	The callback will be called with the response body data as first argument
		98	(or C<undef> if an error occured), and a hash-ref with response headers
		99	(and trailers) as second argument.
		100
		101	All the headers in that hash are lowercased. In addition to the response
		102	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		103	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
		104	three parts of the HTTP Status-Line of the same name. If an error occurs
		105	during the body phase of a request, then the original C<Status> and
		106	C<Reason> values from the header are available as C<OrigStatus> and
		107	C<OrigReason>.
		108
		109	The pseudo-header C<URL> contains the actual URL (which can differ from
		110	the requested URL when following redirects - for example, you might get
		111	an error that your URL scheme is not supported even though your URL is a
		112	valid http URL because it redirected to an ftp URL, in which case you can
		113	look at the URL pseudo header).
		114
		115	The pseudo-header C<Redirect> only exists when the request was a result
		116	of an internal redirect. In that case it is an array reference with
		117	the C<($data, $headers)> from the redirect response. Note that this
		118	response could in turn be the result of a redirect itself, and C<<
		119	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		120	response, and so on.
		121
		122	If the server sends a header multiple times, then their contents will be
		123	joined together with a comma (C<,>), as per the HTTP spec.
		124
		125	If an internal error occurs, such as not being able to resolve a hostname,
		126	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
		127	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
		128	message. Currently the following status codes are used:
		129
		130	=over 4
		131
		132	=item 595 - errors during connection etsbalishment, proxy handshake.
		133
		134	=item 596 - errors during TLS negotiation, request sending and header processing.
		135
		136	=item 597 - errors during body receiving or processing.
		137
		138	=item 598 - user aborted request via C<on_header> or C<on_body>.
		139
		140	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		141
		142	=back
		143
		144	A typical callback might look like this:
		145
		146	sub {
		147	my ($body, $hdr) = @_;
		148
		149	if ($hdr->{Status} =~ /^2/) {
		150	... everything should be ok
		151	} else {
		152	print "error, $hdr->{Status} $hdr->{Reason}\n";
		153	}
		154	}
		155
60	Additional parameters are key-value pairs, and are fully optional. They	156	Additional parameters are key-value pairs, and are fully optional. They
61	include:	157	include:
62		158
63	=over 4	159	=over 4
64		160
65	=item recurse => $boolean (default: true)	161	=item recurse => $count (default: $MAX_RECURSE)
66		162
67	Whether to recurse requests or not, e.g. on redirects, authentication	163	Whether to recurse requests or not, e.g. on redirects, authentication
68	retries and so on.	164	retries and so on, and how often to do so.
69		165
70	=item headers => hashref	166	=item headers => hashref
71		167
72	The request headers to use.	168	The request headers to use. Currently, C<http_request> may provide its own
		169	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
		170	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		171	(this can be suppressed by using C<undef> for these headers in which case
		172	they won't be sent at all).
73		173
74	=item timeout => $seconds	174	=item timeout => $seconds
75		175
76	The time-out to use for various stages - each connect attempt will reset	176	The time-out to use for various stages - each connect attempt will reset
77	the timeout, as will read or write activity.	177	the timeout, as will read or write activity, i.e. this is not an overall
		178	timeout.
		179
		180	Default timeout is 5 minutes.
		181
		182	=item proxy => [$host, $port[, $scheme]] or undef
		183
		184	Use the given http proxy for all requests. If not specified, then the
		185	default proxy (as specified by C<$ENV{http_proxy}>) is used.
		186
		187	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
		188	HTTPS.
		189
		190	=item body => $string
		191
		192	The request body, usually empty. Will be sent as-is (future versions of
		193	this module might offer more options).
		194
		195	=item cookie_jar => $hash_ref
		196
		197	Passing this parameter enables (simplified) cookie-processing, loosely
		198	based on the original netscape specification.
		199
		200	The C<$hash_ref> must be an (initially empty) hash reference which
		201	will get updated automatically. It is possible to save the cookie jar
		202	to persistent storage with something like JSON or Storable - see the
		203	C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
		204	expired or session-only cookies, and also for documentation on the format
		205	of the cookie jar.
		206
		207	Note that this cookie implementation is not meant to be complete. If
		208	you want complete cookie management you have to do that on your
		209	own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
		210	working. Cookies are a privacy disaster, do not use them unless required
		211	to.
		212
		213	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		214	headers will be set and handled by this module, otherwise they will be
		215	left untouched.
		216
		217	=item tls_ctx => $scheme \| $tls_ctx
		218
		219	Specifies the AnyEvent::TLS context to be used for https connections. This
		220	parameter follows the same rules as the C<tls_ctx> parameter to
		221	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		222	C<high> can be specified, which give you a predefined low-security (no
		223	verification, highest compatibility) and high-security (CA and common-name
		224	verification) TLS context.
		225
		226	The default for this option is C<low>, which could be interpreted as "give
		227	me the page, no matter what".
		228
		229	=item on_prepare => $callback->($fh)
		230
		231	In rare cases you need to "tune" the socket before it is used to
		232	connect (for exmaple, to bind it on a given IP address). This parameter
		233	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		234	and behaves exactly the same way (e.g. it has to provide a
		235	timeout). See the description for the C<$prepare_cb> argument of
		236	C<AnyEvent::Socket::tcp_connect> for details.
		237
		238	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		239
		240	In even rarer cases you want total control over how AnyEvent::HTTP
		241	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		242	to do this, but you can provide your own C<tcp_connect> function -
		243	obviously, it has to follow the same calling conventions, except that it
		244	may always return a connection guard object.
		245
		246	There are probably lots of weird uses for this function, starting from
		247	tracing the hosts C<http_request> actually tries to connect, to (inexact
		248	but fast) host => IP address caching or even socks protocol support.
		249
		250	=item on_header => $callback->($headers)
		251
		252	When specified, this callback will be called with the header hash as soon
		253	as headers have been successfully received from the remote server (not on
		254	locally-generated errors).
		255
		256	It has to return either true (in which case AnyEvent::HTTP will continue),
		257	or false, in which case AnyEvent::HTTP will cancel the download (and call
		258	the finish callback with an error code of C<598>).
		259
		260	This callback is useful, among other things, to quickly reject unwanted
		261	content, which, if it is supposed to be rare, can be faster than first
		262	doing a C<HEAD> request.
		263
		264	The downside is that cancelling the request makes it impossible to re-use
		265	the connection. Also, the C<on_header> callback will not receive any
		266	trailer (headers sent after the response body).
		267
		268	Example: cancel the request unless the content-type is "text/html".
		269
		270	on_header => sub {
		271	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		272	},
		273
		274	=item on_body => $callback->($partial_body, $headers)
		275
		276	When specified, all body data will be passed to this callback instead of
		277	to the completion callback. The completion callback will get the empty
		278	string instead of the body data.
		279
		280	It has to return either true (in which case AnyEvent::HTTP will continue),
		281	or false, in which case AnyEvent::HTTP will cancel the download (and call
		282	the completion callback with an error code of C<598>).
		283
		284	The downside to cancelling the request is that it makes it impossible to
		285	re-use the connection.
		286
		287	This callback is useful when the data is too large to be held in memory
		288	(so the callback writes it to a file) or when only some information should
		289	be extracted, or when the body should be processed incrementally.
		290
		291	It is usually preferred over doing your own body handling via
		292	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		293	only used to create a connection, C<want_body_handle> is the better
		294	alternative, as it allows you to install your own event handler, reducing
		295	resource usage.
		296
		297	=item want_body_handle => $enable
		298
		299	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		300	changes considerably: after parsing the headers, and instead of
		301	downloading the body (if any), the completion callback will be
		302	called. Instead of the C<$body> argument containing the body data, the
		303	callback will receive the L<AnyEvent::Handle> object associated with the
		304	connection. In error cases, C<undef> will be passed. When there is no body
		305	(e.g. status C<304>), the empty string will be passed.
		306
		307	The handle object might or might not be in TLS mode, might be connected to
		308	a proxy, be a persistent connection etc., and configured in unspecified
		309	ways. The user is responsible for this handle (it will not be used by this
		310	module anymore).
		311
		312	This is useful with some push-type services, where, after the initial
		313	headers, an interactive protocol is used (typical example would be the
		314	push-style twitter API which starts a JSON/XML stream).
		315
		316	If you think you need this, first have a look at C<on_body>, to see if
		317	that doesn't solve your problem in a better way.
78		318
79	=back	319	=back
80		320
81	=back	321	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		322	the response body.
		323
		324	http_request GET => "http://www.nethype.de/", sub {
		325	my ($body, $hdr) = @_;
		326	print "$body\n";
		327	};
		328
		329	Example: do a HTTP HEAD request on https://www.google.com/, use a
		330	timeout of 30 seconds.
		331
		332	http_request
		333	GET => "https://www.google.com",
		334	timeout => 30,
		335	sub {
		336	my ($body, $hdr) = @_;
		337	use Data::Dumper;
		338	print Dumper $hdr;
		339	}
		340	;
		341
		342	Example: do another simple HTTP GET request, but immediately try to
		343	cancel it.
		344
		345	my $request = http_request GET => "http://www.nethype.de/", sub {
		346	my ($body, $hdr) = @_;
		347	print "$body\n";
		348	};
		349
		350	undef $request;
82		351
83	=cut	352	=cut
84		353
		354	sub _slot_schedule;
		355	sub _slot_schedule($) {
		356	my $host = shift;
		357
		358	while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) {
		359	if (my $cb = shift @{ $CO_SLOT{$host}[1] }) {
		360	# somebody wants that slot
		361	++$CO_SLOT{$host}[0];
		362	++$ACTIVE;
		363
		364	$cb->(AnyEvent::Util::guard {
		365	--$ACTIVE;
		366	--$CO_SLOT{$host}[0];
		367	_slot_schedule $host;
		368	});
		369	} else {
		370	# nobody wants the slot, maybe we can forget about it
		371	delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0];
		372	last;
		373	}
		374	}
		375	}
		376
		377	# wait for a free slot on host, call callback
		378	sub _get_slot($$) {
		379	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
		380
		381	_slot_schedule $_[0];
		382	}
		383
		384	#############################################################################
		385
		386	# expire cookies
		387	sub cookie_jar_expire($;$) {
		388	my ($jar, $session_end) = @_;
		389
		390	%$jar = () if $jar->{version} != 1;
		391
		392	my $anow = AE::now;
		393
		394	while (my ($chost, $paths) = each %$jar) {
		395	next unless ref $paths;
		396
		397	while (my ($cpath, $cookies) = each %$paths) {
		398	while (my ($cookie, $kv) = each %$cookies) {
		399	if (exists $kv->{_expires}) {
		400	delete $cookies->{$cookie}
		401	if $anow > $kv->{_expires};
		402	} elsif ($session_end) {
		403	delete $cookies->{$cookie};
		404	}
		405	}
		406
		407	delete $paths->{$cpath}
		408	unless %$cookies;
		409	}
		410
		411	delete $jar->{$chost}
		412	unless %$paths;
		413	}
		414	}
		415
		416	# extract cookies from jar
		417	sub cookie_jar_extract($$$$) {
		418	my ($jar, $uscheme, $uhost, $upath) = @_;
		419
		420	$uhost = lc $uhost;
		421
		422	%$jar = () if $jar->{version} != 1;
		423
		424	my @cookies;
		425
		426	while (my ($chost, $paths) = each %$jar) {
		427	next unless ref $paths;
		428
		429	if ($chost =~ /^\./) {
		430	next unless $chost eq substr $uhost, -length $chost;
		431	} elsif ($chost =~ /\./) {
		432	next unless $chost eq $uhost;
		433	} else {
		434	next;
		435	}
		436
		437	while (my ($cpath, $cookies) = each %$paths) {
		438	next unless $cpath eq substr $upath, 0, length $cpath;
		439
		440	while (my ($cookie, $kv) = each %$cookies) {
		441	next if $uscheme ne "https" && exists $kv->{secure};
		442
		443	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
		444	delete $cookies->{$cookie};
		445	next;
		446	}
		447
		448	my $value = $kv->{value};
		449
		450	if ($value =~ /[=;,[:space:]]/) {
		451	$value =~ s/([\\"])/\\$1/g;
		452	$value = "\"$value\"";
		453	}
		454
		455	push @cookies, "$cookie=$value";
		456	}
		457	}
		458	}
		459
		460	\@cookies
		461	}
		462
		463	# parse set_cookie header into jar
		464	sub cookie_jar_set_cookie($$$$) {
		465	my ($jar, $set_cookie, $uhost, $date) = @_;
		466
		467	my $anow = int AE::now;
		468	my $snow; # server-now
		469
		470	for ($set_cookie) {
		471	# parse NAME=VALUE
		472	my @kv;
		473
		474	# expires is not http-compliant in the original cookie-spec,
		475	# we support the official date format and some extensions
		476	while (
		477	m{
		478	\G\s*
		479	(?:
		480	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		481	\| ([^=;,[:space:]]+) (?: \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) ) )?
		482	)
		483	}gcxsi
		484	) {
		485	my $name = $2;
		486	my $value = $4;
		487
		488	if (defined $1) {
		489	# expires
		490	$name = "expires";
		491	$value = $1;
		492	} elsif (defined $3) {
		493	# quoted
		494	$value = $3;
		495	$value =~ s/\\(.)/$1/gs;
		496	}
		497
		498	push @kv, lc $name, $value;
		499
		500	last unless /\G\s*;/gc;
		501	}
		502
		503	last unless @kv;
		504
		505	my $name = shift @kv;
		506	my %kv = (value => shift @kv, @kv);
		507
		508	if (exists $kv{"max-age"}) {
		509	$kv{_expires} = $anow + delete $kv{"max-age"};
		510	} elsif (exists $kv{expires}) {
		511	$snow \|\|= parse_date ($date) \|\| $anow;
		512	$kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
		513	} else {
		514	delete $kv{_expires};
		515	}
		516
		517	my $cdom;
		518	my $cpath = (delete $kv{path}) \|\| "/";
		519
		520	if (exists $kv{domain}) {
		521	$cdom = delete $kv{domain};
		522
		523	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		524
		525	next if $cdom =~ /\.$/;
		526
		527	# this is not rfc-like and not netscape-like. go figure.
		528	my $ndots = $cdom =~ y/.//;
		529	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		530	} else {
		531	$cdom = $uhost;
		532	}
		533
		534	# store it
		535	$jar->{version} = 1;
		536	$jar->{lc $cdom}{$cpath}{$name} = \%kv;
		537
		538	redo if /\G\s*,/gc;
		539	}
		540	}
		541
		542	# continue to parse $_ for headers and place them into the arg
		543	sub parse_hdr() {
		544	my %hdr;
		545
		546	# things seen, not parsed:
		547	# p3pP="NON CUR OTPi OUR NOR UNI"
		548
		549	$hdr{lc $1} .= ",$2"
		550	while /\G
		551	([^:\000-\037]*):
		552	[\011\040]*
		553	((?: [^\012]+ \| \012[\011\040] )*)
		554	\012
		555	/gxc;
		556
		557	/\G$/
		558	or return;
		559
		560	# remove the "," prefix we added to all headers above
		561	substr $_, 0, 1, ""
		562	for values %hdr;
		563
		564	\%hdr
		565	}
		566
		567	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		568
		569	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		570	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		571
85	sub http_request($$$;@) {	572	sub http_request($$@) {
86	my $cb = pop;	573	my $cb = pop;
87	my ($method, $url, %arg) = @_;	574	my ($method, $url, %arg) = @_;
88		575
89	my %hdr;	576	my %hdr;
90		577
		578	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		579	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
		580
		581	$method = uc $method;
		582
91	if (my $hdr = delete $arg{headers}) {	583	if (my $hdr = $arg{headers}) {
92	while (my ($k, $v) = each %$hdr) {	584	while (my ($k, $v) = each %$hdr) {
93	$hdr{lc $k} = $v;	585	$hdr{lc $k} = $v;
94	}	586	}
95	}	587	}
96		588
		589	# pseudo headers for all subsequent responses
		590	my @pseudo = (URL => $url);
		591	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		592
		593	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
		594
		595	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
		596	if $recurse < 0;
		597
		598	my $proxy = $arg{proxy} \|\| $PROXY;
97	my $timeout = $arg{timeout} \|\| $TIMEOUT;	599	my $timeout = $arg{timeout} \|\| $TIMEOUT;
98		600
99	$hdr{"user-agent"} \|\|= $USERAGENT;
100
101	my ($scheme, $authority, $path, $query, $fragment) =	601	my ($uscheme, $uauthority, $upath, $query, $fragment) =
102	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	602	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
103		603
104	$scheme = lc $scheme;	604	$uscheme = lc $uscheme;
		605
105	my $port = $scheme eq "http" ? 80	606	my $uport = $uscheme eq "http" ? 80
106	: $scheme eq "https" ? 443	607	: $uscheme eq "https" ? 443
107	: croak "$url: only http and https URLs supported";	608	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
108		609
109	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	610	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
110	or croak "$authority: unparsable URL";	611	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
111		612
112	my $host = $1;	613	my $uhost = $1;
113	$port = $2 if defined $2;	614	$uport = $2 if defined $2;
114		615
		616	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		617	unless exists $hdr{host};
		618
115	$host =~ s/^\[(.*)\]$/$1/;	619	$uhost =~ s/^\[(.*)\]$/$1/;
116	$path .= "?$query" if length $query;	620	$upath .= $query if length $query;
117		621
118	$hdr{host} = $host = lc $host;	622	$upath =~ s%^/?%/%;
119		623
120	my %state;	624	# cookie processing
		625	if (my $jar = $arg{cookie_jar}) {
		626	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
121		627
122	my $body = "";	628	$hdr{cookie} = join "; ", @$cookies
123	$state{body} = $body;	629	if @$cookies;
		630	}
124		631
		632	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
		633
		634	if ($proxy) {
		635	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		636
		637	$rscheme = "http" unless defined $rscheme;
		638
		639	# don't support https requests over https-proxy transport,
		640	# can't be done with tls as spec'ed, unless you double-encrypt.
		641	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
		642	} else {
		643	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
		644	}
		645
		646	# leave out fragment and query string, just a heuristic
		647	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		648	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		649
125	$hdr{"content-length"} = length $body;	650	$hdr{"content-length"} = length $arg{body}
		651	if length $arg{body} \|\| $method ne "GET";
126		652
127	$state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub {	653	$hdr{connection} = "close TE"; #1.1
		654	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		655
		656	my %state = (connect_guard => 1);
		657
		658	_get_slot $uhost, sub {
128	$state{fh} = shift	659	$state{slot_guard} = shift;
129	or return $cb->(undef, { Status => 599, Reason => "$!" });
130		660
131	delete $state{connect_guard}; # reduce memory usage, save a tree	661	return unless $state{connect_guard};
132		662
133	# get handle	663	my $ae_error = 595; # connecting
134	$state{handle} = new AnyEvent::Handle
135	fh => $state{fh},
136	($scheme eq "https" ? (tls => "connect") : ());
137		664
138	# limit the number of persistent connections	665	# handle actual, non-tunneled, request
139	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	666	my $handle_actual_request = sub {
140	++$KA_COUNT{$_[1]};	667	$ae_error = 596; # request phase
141	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };
142	$hdr{connection} = "keep-alive";
143	} else {
144	delete $hdr{connection};
145	}
146		668
147	# (re-)configure handle	669	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
148	$state{handle}->timeout ($timeout);
149	$state{handle}->on_error (sub {
150	%state = ();
151	$cb->(undef, { Status => 599, Reason => "$!" });
152	});
153	$state{handle}->on_eof (sub {
154	%state = ();
155	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });
156	});
157		670
158	# send request	671	# send request
159	$state{handle}->push_write (	672	$state{handle}->push_write (
160	"\U$method\E $path HTTP/1.0\015\012"	673	"$method $rpath HTTP/1.1\015\012"
161	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	674	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
162	. "\015\012"	675	. "\015\012"
163	. (delete $state{body})	676	. (delete $arg{body})
164	);
165
166	%hdr = (); # reduce memory usage, save a kitten
167
168	# status line
169	$state{handle}->push_read (line => qr/\015?\012/, sub {
170	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
171	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
172
173	my %hdr = ( # response headers
174	HTTPVersion => ",$1",
175	Status => ",$2",
176	Reason => ",$3",
177	);	677	);
178		678
179	# headers, could be optimized a bit	679	# return if error occured during push_write()
180	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	680	return unless %state;
		681
		682	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
		683
		684	# status line and headers
		685	$state{read_response} = sub {
181	for ("$_[1]\012") {	686	for ("$_[1]") {
182	$hdr{lc $1} .= ",$2"	687	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
183	while /\G
184	([^:\000-\040]+):
185	[\011\040]*
186	((?: [^\015\012]+ \| \015?\012[\011\040] )*)
187	\015?\012
188	/gxc;
189		688
		689	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
		690	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
		691
		692	# 100 Continue handling
		693	# should not happen as we don't send expect: 100-continue,
		694	# but we handle it just in case.
		695	# since we send the request body regardless, if we get an error
		696	# we are out of-sync, which we currently do NOT handle correctly.
		697	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		698	if $2 eq 100;
		699
		700	push @pseudo,
		701	HTTPVersion => $1,
		702	Status => $2,
		703	Reason => $3,
190	/\G$/	704	;
		705
		706	my $hdr = parse_hdr
191	or return $cb->(undef, { Status => 599, Reason => "garbled response headers" });	707	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		708
		709	%hdr = (%$hdr, @pseudo);
192	}	710	}
193		711
194	substr $_, 0, 1, ""	712	# redirect handling
195	for values %hdr;	713	# microsoft and other shitheads don't give a shit for following standards,
		714	# try to support some common forms of broken Location headers.
		715	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		716	$hdr{location} =~ s/^\.\/+//;
196		717
		718	my $url = "$rscheme://$uhost:$uport";
		719
		720	unless ($hdr{location} =~ s/^\///) {
		721	$url .= $upath;
		722	$url =~ s/\/[^\/]*$//;
		723	}
		724
		725	$hdr{location} = "$url/$hdr{location}";
		726	}
		727
		728	my $redirect;
		729
		730	if ($recurse) {
		731	my $status = $hdr{Status};
		732
		733	# industry standard is to redirect POST as GET for
		734	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		735	# also, the UA should ask the user for 301 and 307 and POST,
		736	# industry standard seems to be to simply follow.
		737	# we go with the industry standard.
		738	if ($status == 301 or $status == 302 or $status == 303) {
		739	# HTTP/1.1 is unclear on how to mutate the method
		740	$method = "GET" unless $method eq "HEAD";
		741	$redirect = 1;
		742	} elsif ($status == 307) {
		743	$redirect = 1;
		744	}
		745	}
		746
		747	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		748	my $may_keep_alive = $_[3];
		749
		750	$state{handle}->destroy if $state{handle};
		751	%state = ();
		752
		753	if (defined $_[1]) {
		754	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		755	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		756	}
		757
		758	# set-cookie processing
		759	if ($arg{cookie_jar}) {
		760	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
		761	}
		762
		763	if ($redirect && exists $hdr{location}) {
		764	# we ignore any errors, as it is very common to receive
		765	# Content-Length != 0 but no actual body
		766	# we also access %hdr, as $_[1] might be an erro
		767	http_request (
		768	$method => $hdr{location},
		769	%arg,
		770	recurse => $recurse - 1,
		771	Redirect => [$_[0], \%hdr],
		772	$cb);
		773	} else {
		774	$cb->($_[0], \%hdr);
		775	}
		776	};
		777
		778	$ae_error = 597; # body phase
		779
197	if (exists $hdr{"content-length"}) {	780	my $len = $hdr{"content-length"};
		781
		782	# body handling, many different code paths
		783	# - no body expected
		784	# - want_body_handle
		785	# - te chunked
		786	# - 2x length known (with or without on_body)
		787	# - 2x length not known (with or without on_body)
		788	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		789	$finish->(undef, 598 => "Request cancelled by on_header");
		790	} elsif (
		791	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		792	or $method eq "HEAD"
		793	or (defined $len && $len == 0) # == 0, not !, because "0 " is true
		794	) {
		795	# no body
		796	$finish->("", undef, undef, 1);
		797
		798	} elsif (!$redirect && $arg{want_body_handle}) {
		799	$_[0]->on_eof (undef);
		800	$_[0]->on_error (undef);
		801	$_[0]->on_read (undef);
		802
		803	$finish->(delete $state{handle});
		804
		805	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		806	my $cl = 0;
		807	my $body = undef;
		808	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		809
		810	$state{read_chunk} = sub {
		811	$_[1] =~ /^([0-9a-fA-F]+)/
		812	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		813
		814	my $len = hex $1;
		815
		816	if ($len) {
		817	$cl += $len;
		818
198	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	819	$_[0]->push_read (chunk => $len, sub {
199	# could cache persistent connection now	820	$on_body->($_[1], \%hdr)
200	if ($hdr{connection} =~ /\bkeep-alive\b/i) {	821	or return $finish->(undef, 598 => "Request cancelled by on_body");
		822
		823	$_[0]->push_read (line => sub {
		824	length $_[1]
		825	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		826	$_[0]->push_read (line => $state{read_chunk});
		827	});
		828	});
		829	} else {
		830	$hdr{"content-length"} \|\|= $cl;
		831
		832	$_[0]->push_read (line => $qr_nlnl, sub {
		833	if (length $_[1]) {
		834	for ("$_[1]") {
		835	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		836
		837	my $hdr = parse_hdr
		838	or return $finish->(undef, $ae_error => "Garbled response trailers");
		839
		840	%hdr = (%hdr, %$hdr);
		841	}
		842	}
		843
		844	$finish->($body, undef, undef, 1);
		845	});
		846	}
		847	};
		848
		849	$_[0]->push_read (line => $state{read_chunk});
		850
		851	} elsif ($arg{on_body}) {
		852	if (defined $len) {
		853	$_[0]->on_read (sub {
		854	$len -= length $_[0]{rbuf};
		855
		856	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		857	or return $finish->(undef, 598 => "Request cancelled by on_body");
		858
		859	$len > 0
		860	or $finish->("", undef, undef, 1);
201	};	861	});
		862	} else {
		863	$_[0]->on_eof (sub {
		864	$finish->("");
		865	});
		866	$_[0]->on_read (sub {
		867	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		868	or $finish->(undef, 598 => "Request cancelled by on_body");
		869	});
		870	}
		871	} else {
		872	$_[0]->on_eof (undef);
202		873
		874	if (defined $len) {
		875	$_[0]->on_read (sub {
		876	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		877	if $len <= length $_[0]{rbuf};
		878	});
		879	} else {
		880	$_[0]->on_error (sub {
		881	($! == Errno::EPIPE \|\| !$!)
		882	? $finish->(delete $_[0]{rbuf})
		883	: $finish->(undef, $ae_error => $_[2]);
		884	});
		885	$_[0]->on_read (sub { });
		886	}
		887	}
		888	};
		889
		890	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		891	};
		892
		893	my $connect_cb = sub {
		894	$state{fh} = shift
		895	or do {
		896	my $err = "$!";
		897	%state = ();
		898	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
		899	};
		900
		901	return unless delete $state{connect_guard};
		902
		903	# get handle
		904	$state{handle} = new AnyEvent::Handle
		905	fh => $state{fh},
		906	peername => $rhost,
		907	tls_ctx => $arg{tls_ctx},
		908	# these need to be reconfigured on keepalive handles
		909	timeout => $timeout,
		910	on_error => sub {
		911	%state = ();
		912	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
		913	},
		914	on_eof => sub {
		915	%state = ();
		916	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
		917	},
		918	;
		919
		920	# limit the number of persistent connections
		921	# keepalive not yet supported
		922	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
		923	# ++$KA_COUNT{$_[1]};
		924	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		925	# --$KA_COUNT{$_[1]}
		926	# };
		927	# $hdr{connection} = "keep-alive";
		928	# }
		929
		930	$state{handle}->starttls ("connect") if $rscheme eq "https";
		931
		932	# now handle proxy-CONNECT method
		933	if ($proxy && $uscheme eq "https") {
		934	# oh dear, we have to wrap it into a connect request
		935
		936	# maybe re-use $uauthority with patched port?
		937	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		938	$state{handle}->push_read (line => $qr_nlnl, sub {
		939	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		940	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
		941
		942	if ($2 == 200) {
		943	$rpath = $upath;
		944	$handle_actual_request->();
		945	} else {
203	%state = ();	946	%state = ();
204	$cb->($_[1], \%hdr);	947	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
205	});	948	}
206	} else {
207	# too bad, need to read until we get an error or EOF,
208	# no way to detect winged data.
209	$_[0]->on_error (sub {
210	%state = ();
211	$cb->($_[0]{rbuf}, \%hdr);
212	});
213	$_[0]->on_eof (undef);
214	$_[0]->on_read (sub { });
215	}	949	});
		950	} else {
		951	$handle_actual_request->();
216	});	952	}
217	});	953	};
218	}, sub {	954
219	$timeout	955	my $tcp_connect = $arg{tcp_connect}
		956	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		957
		958	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
220	};	959	};
221		960
222	defined wantarray && AnyEvent::Util::guard { %state = () }	961	defined wantarray && AnyEvent::Util::guard { %state = () }
223	}	962	}
224		963
225	sub http_get($$;@) {	964	sub http_get($@) {
226	unshift @_, "GET";	965	unshift @_, "GET";
227	&http_request	966	&http_request
228	}	967	}
229		968
		969	sub http_head($@) {
		970	unshift @_, "HEAD";
		971	&http_request
		972	}
		973
		974	sub http_post($$@) {
		975	my $url = shift;
		976	unshift @_, "POST", $url, "body";
		977	&http_request
		978	}
		979
		980	=back
		981
		982	=head2 DNS CACHING
		983
		984	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		985	the actual connection, which in turn uses AnyEvent::DNS to resolve
		986	hostnames. The latter is a simple stub resolver and does no caching
		987	on its own. If you want DNS caching, you currently have to provide
		988	your own default resolver (by storing a suitable resolver object in
		989	C<$AnyEvent::DNS::RESOLVER>).
		990
230	=head2 GLOBAL VARIABLES	991	=head2 GLOBAL FUNCTIONS AND VARIABLES
231		992
232	=over 4	993	=over 4
233		994
		995	=item AnyEvent::HTTP::set_proxy "proxy-url"
		996
		997	Sets the default proxy server to use. The proxy-url must begin with a
		998	string of the form C<http://host:port> (optionally C<https:...>), croaks
		999	otherwise.
		1000
		1001	To clear an already-set proxy, use C<undef>.
		1002
		1003	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
		1004
		1005	Remove all cookies from the cookie jar that have been expired. If
		1006	C<$session_end> is given and true, then additionally remove all session
		1007	cookies.
		1008
		1009	You should call this function (with a true C<$session_end>) before you
		1010	save cookies to disk, and you should call this function after loading them
		1011	again. If you have a long-running program you can additonally call this
		1012	function from time to time.
		1013
		1014	A cookie jar is initially an empty hash-reference that is managed by this
		1015	module. It's format is subject to change, but currently it is like this:
		1016
		1017	The key C<version> has to contain C<1>, otherwise the hash gets
		1018	emptied. All other keys are hostnames or IP addresses pointing to
		1019	hash-references. The key for these inner hash references is the
		1020	server path for which this cookie is meant, and the values are again
		1021	hash-references. The keys of those hash-references is the cookie name, and
		1022	the value, you guessed it, is another hash-reference, this time with the
		1023	key-value pairs from the cookie, except for C<expires> and C<max-age>,
		1024	which have been replaced by a C<_expires> key that contains the cookie
		1025	expiry timestamp.
		1026
		1027	Here is an example of a cookie jar with a single cookie, so you have a
		1028	chance of understanding the above paragraph:
		1029
		1030	{
		1031	version => 1,
		1032	"10.0.0.1" => {
		1033	"/" => {
		1034	"mythweb_id" => {
		1035	_expires => 1293917923,
		1036	value => "ooRung9dThee3ooyXooM1Ohm",
		1037	},
		1038	},
		1039	},
		1040	}
		1041
		1042	=item $date = AnyEvent::HTTP::format_date $timestamp
		1043
		1044	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		1045	Date (RFC 2616).
		1046
		1047	=item $timestamp = AnyEvent::HTTP::parse_date $date
		1048
		1049	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		1050	bunch of minor variations of those, and returns the corresponding POSIX
		1051	timestamp, or C<undef> if the date cannot be parsed.
		1052
234	=item $AnyEvent::HTTP::MAX_REDIRECTS	1053	=item $AnyEvent::HTTP::MAX_RECURSE
235		1054
236	The default value for the C<max_redirects> request parameter	1055	The default value for the C<recurse> request parameter (default: C<10>).
237	(default: C<10>).
238		1056
239	=item $AnyEvent::HTTP::USERAGENT	1057	=item $AnyEvent::HTTP::USERAGENT
240		1058
241	The default value for the C<User-Agent> header (the default is	1059	The default value for the C<User-Agent> header (the default is
242	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	1060	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
243		1061
244	=item $AnyEvent::HTTP::MAX_PERSISTENT	1062	=item $AnyEvent::HTTP::MAX_PER_HOST
245		1063
246	The maximum number of persistent connections to keep open (default: 8).	1064	The maximum number of concurrent connections to the same host (identified
		1065	by the hostname). If the limit is exceeded, then the additional requests
		1066	are queued until previous connections are closed.
247		1067
248	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT	1068	The default value for this is C<4>, and it is highly advisable to not
		1069	increase it.
249		1070
250	The maximum time to cache a persistent connection, in seconds (default: 15).	1071	=item $AnyEvent::HTTP::ACTIVE
		1072
		1073	The number of active connections. This is not the number of currently
		1074	running requests, but the number of currently open and non-idle TCP
		1075	connections. This number of can be useful for load-leveling.
251		1076
252	=back	1077	=back
253		1078
254	=cut	1079	=cut
255		1080
		1081	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1082	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1083
		1084	sub format_date($) {
		1085	my ($time) = @_;
		1086
		1087	# RFC 822/1123 format
		1088	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1089
		1090	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1091	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1092	$H, $M, $S;
		1093	}
		1094
		1095	sub parse_date($) {
		1096	my ($date) = @_;
		1097
		1098	my ($d, $m, $y, $H, $M, $S);
		1099
		1100	if ($date =~ /^[A-Z][a-z][a-z]+, ([0-9][0-9]?)[\- ]([A-Z][a-z][a-z])[\- ]([0-9][0-9][0-9][0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) GMT$/) {
		1101	# RFC 822/1123, required by RFC 2616 (with " ")
		1102	# cookie dates (with "-")
		1103
		1104	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1105
		1106	} elsif ($date =~ /^[A-Z][a-z][a-z]+, ([0-9][0-9]?)-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) GMT$/) {
		1107	# RFC 850
		1108	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1109
		1110	} elsif ($date =~ /^[A-Z][a-z][a-z]+ ([A-Z][a-z][a-z]) ([0-9 ]?[0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) ([0-9][0-9][0-9][0-9])$/) {
		1111	# ISO C's asctime
		1112	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1113	}
		1114	# other formats fail in the loop below
		1115
		1116	for (0..11) {
		1117	if ($m eq $month[$_]) {
		1118	require Time::Local;
		1119	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1120	}
		1121	}
		1122
		1123	undef
		1124	}
		1125
		1126	sub set_proxy($) {
		1127	if (length $_[0]) {
		1128	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1129	or Carp::croak "$_[0]: invalid proxy URL";
		1130	$PROXY = [$2, $3 \|\| 3128, $1]
		1131	} else {
		1132	undef $PROXY;
		1133	}
		1134	}
		1135
		1136	# initialise proxy from environment
		1137	eval {
		1138	set_proxy $ENV{http_proxy};
		1139	};
		1140
		1141	=head2 SOCKS PROXIES
		1142
		1143	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1144	compile your perl to support socks, or use an external program such as
		1145	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1146	transparently.
		1147
		1148	Alternatively, for AnyEvent::HTTP only, you can use your own
		1149	C<tcp_connect> function that does the proxy handshake - here is an example
		1150	that works with socks4a proxies:
		1151
		1152	use Errno;
		1153	use AnyEvent::Util;
		1154	use AnyEvent::Socket;
		1155	use AnyEvent::Handle;
		1156
		1157	# host, port and username of/for your socks4a proxy
		1158	my $socks_host = "10.0.0.23";
		1159	my $socks_port = 9050;
		1160	my $socks_user = "";
		1161
		1162	sub socks4a_connect {
		1163	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1164
		1165	my $hdl = new AnyEvent::Handle
		1166	connect => [$socks_host, $socks_port],
		1167	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1168	on_error => sub { $connect_cb->() },
		1169	;
		1170
		1171	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1172
		1173	$hdl->push_read (chunk => 8, sub {
		1174	my ($hdl, $chunk) = @_;
		1175	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1176
		1177	if ($status == 0x5a) {
		1178	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1179	} else {
		1180	$! = Errno::ENXIO; $connect_cb->();
		1181	}
		1182	});
		1183
		1184	$hdl
		1185	}
		1186
		1187	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1188	possibly after switching off other proxy types:
		1189
		1190	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1191
		1192	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1193	my ($data, $headers) = @_;
		1194	...
		1195	};
		1196
256	=head1 SEE ALSO	1197	=head1 SEE ALSO
257		1198
258	L<AnyEvent>.	1199	L<AnyEvent>.
259		1200
260	=head1 AUTHOR	1201	=head1 AUTHOR
261		1202
262	Marc Lehmann <schmorp@schmorp.de>	1203	Marc Lehmann <schmorp@schmorp.de>
263	http://home.schmorp.de/	1204	http://home.schmorp.de/
		1205
		1206	With many thanks to Дмитрий Шалашов, who provided countless
		1207	testcases and bugreports.
264		1208
265	=cut	1209	=cut
266		1210
267	1	1211	1
268		1212

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.1 by root, Tue Jun 3 16:37:13 2008 UTC vs. Revision 1.85 by root, Sun Jan 2 05:31:56 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.1 by root, Tue Jun 3 16:37:13 2008 UTC vs.
Revision 1.85 by root, Sun Jan 2 05:31:56 2011 UTC