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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.16 by root, Fri Jun 6 12:57:48 2008 UTC vs.
Revision 1.74 by root, Fri Dec 31 22:40:54 2010 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.
…		…
35	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
36		40
37	use strict;	41	use strict;
38	no warnings;	42	no warnings;
39		43
40	use Carp;	44	use Errno ();
41		45
42	use AnyEvent ();	46	use AnyEvent 5.0 ();
43	use AnyEvent::Util ();	47	use AnyEvent::Util ();
44	use AnyEvent::Socket ();
45	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
46		49
47	use base Exporter::;	50	use base Exporter::;
48		51
49	our $VERSION = '1.01';	52	our $VERSION = '1.5';
50		53
51	our @EXPORT = qw(http_get http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
52		55
53	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
54	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
55	our $MAX_PERSISTENT = 8;	58	our $MAX_PERSISTENT = 8;
56	our $PERSISTENT_TIMEOUT = 2;	59	our $PERSISTENT_TIMEOUT = 2;
57	our $TIMEOUT = 300;	60	our $TIMEOUT = 300;
58		61
59	# changing these is evil	62	# changing these is evil
60	our $MAX_PERSISTENT_PER_HOST = 2;	63	our $MAX_PERSISTENT_PER_HOST = 0;
61	our $MAX_PER_HOST = 4;	64	our $MAX_PER_HOST = 4;
62		65
63	our $PROXY;	66	our $PROXY;
64	our $ACTIVE = 0;	67	our $ACTIVE = 0;
65		68
…		…
67	my %CO_SLOT; # number of open connections, and wait queue, per host	70	my %CO_SLOT; # number of open connections, and wait queue, per host
68		71
69	=item http_get $url, key => value..., $cb->($data, $headers)	72	=item http_get $url, key => value..., $cb->($data, $headers)
70		73
71	Executes an HTTP-GET request. See the http_request function for details on	74	Executes an HTTP-GET request. See the http_request function for details on
72	additional parameters.	75	additional parameters and the return value.
73		76
74	=item http_head $url, key => value..., $cb->($data, $headers)	77	=item http_head $url, key => value..., $cb->($data, $headers)
75		78
76	Executes an HTTP-HEAD request. See the http_request function for details on	79	Executes an HTTP-HEAD request. See the http_request function for details
77	additional parameters.	80	on additional parameters and the return value.
78		81
79	=item http_post $url, $body, key => value..., $cb->($data, $headers)	82	=item http_post $url, $body, key => value..., $cb->($data, $headers)
80		83
81	Executes an HTTP-POST request with a request body of C<$bod>. See the	84	Executes an HTTP-POST request with a request body of C<$body>. See the
82	http_request function for details on additional parameters.	85	http_request function for details on additional parameters and the return
		86	value.
83		87
84	=item http_request $method => $url, key => value..., $cb->($data, $headers)	88	=item http_request $method => $url, key => value..., $cb->($data, $headers)
85		89
86	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	90	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
87	must be an absolute http or https URL.	91	must be an absolute http or https URL.
88		92
		93	When called in void context, nothing is returned. In other contexts,
		94	C<http_request> returns a "cancellation guard" - you have to keep the
		95	object at least alive until the callback get called. If the object gets
		96	destroyed before the callback is called, the request will be cancelled.
		97
89	The callback will be called with the response data as first argument	98	The callback will be called with the response body data as first argument
90	(or C<undef> if it wasn't available due to errors), and a hash-ref with	99	(or C<undef> if an error occured), and a hash-ref with response headers
91	response headers as second argument.	100	(and trailers) as second argument.
92		101
93	All the headers in that hash are lowercased. In addition to the response	102	All the headers in that hash are lowercased. In addition to the response
94	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
95	C<Reason> contain the three parts of the HTTP Status-Line of the same	104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
		105	three parts of the HTTP Status-Line of the same name. If an error occurs
		106	during the body phase of a request, then the original C<Status> and
		107	C<Reason> values from the header are available as C<OrigStatus> and
		108	C<OrigReason>.
		109
		110	The pseudo-header C<URL> contains the actual URL (which can differ from
		111	the requested URL when following redirects - for example, you might get
		112	an error that your URL scheme is not supported even though your URL is a
		113	valid http URL because it redirected to an ftp URL, in which case you can
		114	look at the URL pseudo header).
		115
		116	The pseudo-header C<Redirect> only exists when the request was a result
		117	of an internal redirect. In that case it is an array reference with
		118	the C<($data, $headers)> from the redirect response. Note that this
		119	response could in turn be the result of a redirect itself, and C<<
		120	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
		122
96	name. If the server sends a header multiple lines, then their contents	123	If the server sends a header multiple times, then their contents will be
97	will be joined together with C<\x00>.	124	joined together with a comma (C<,>), as per the HTTP spec.
98		125
99	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
100	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
101	and the C<Reason> pseudo-header will contain an error message.	128	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		129	message.
102		130
103	A typical callback might look like this:	131	A typical callback might look like this:
104		132
105	sub {	133	sub {
106	my ($body, $hdr) = @_;	134	my ($body, $hdr) = @_;
…		…
122	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
123	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
124		152
125	=item headers => hashref	153	=item headers => hashref
126		154
127	The request headers to use. Currently, C<http_request> may provide its	155	The request headers to use. Currently, C<http_request> may provide its own
128	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	156	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
129	and will provide defaults for C<User-Agent:> and C<Referer:>.	157	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		158	(this can be suppressed by using C<undef> for these headers in which case
		159	they won't be sent at all).
130		160
131	=item timeout => $seconds	161	=item timeout => $seconds
132		162
133	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
134	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
135		168
136	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
137		170
138	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
139	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
140		173
141	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	174	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
142	HTTPS.	175	HTTPS.
143		176
144	=item body => $string	177	=item body => $string
145		178
146	The request body, usually empty. Will be-sent as-is (future versions of	179	The request body, usually empty. Will be sent as-is (future versions of
147	this module might offer more options).	180	this module might offer more options).
148		181
149	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
150		183
151	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
152	based on the original netscape specification.	185	based on the original netscape specification.
153		186
154	The C<$hash_ref> must be an (initially empty) hash reference which will	187	The C<$hash_ref> must be an (initially empty) hash reference which will
155	get updated automatically. It is possible to save the cookie_jar to	188	get updated automatically. It is possible to save the cookie jar to
156	persistent storage with something like JSON or Storable, but this is not	189	persistent storage with something like JSON or Storable, but this is not
157	recommended, as expire times are currently being ignored.	190	recommended, as session-only cookies might survive longer than expected.
158		191
159	Note that this cookie implementation is not of very high quality, nor	192	Note that this cookie implementation is not meant to be complete. If
160	meant to be complete. If you want complete cookie management you have to	193	you want complete cookie management you have to do that on your
161	do that on your own. C<cookie_jar> is meant as a quick fix to get some	194	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
162	cookie-using sites working. Cookies are a privacy disaster, do not use	195	working. Cookies are a privacy disaster, do not use them unless required
163	them unless required to.	196	to.
		197
		198	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		199	headers will be set and handled by this module, otherwise they will be
		200	left untouched.
		201
		202	=item tls_ctx => $scheme \| $tls_ctx
		203
		204	Specifies the AnyEvent::TLS context to be used for https connections. This
		205	parameter follows the same rules as the C<tls_ctx> parameter to
		206	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		207	C<high> can be specified, which give you a predefined low-security (no
		208	verification, highest compatibility) and high-security (CA and common-name
		209	verification) TLS context.
		210
		211	The default for this option is C<low>, which could be interpreted as "give
		212	me the page, no matter what".
		213
		214	=item on_prepare => $callback->($fh)
		215
		216	In rare cases you need to "tune" the socket before it is used to
		217	connect (for exmaple, to bind it on a given IP address). This parameter
		218	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		219	and behaves exactly the same way (e.g. it has to provide a
		220	timeout). See the description for the C<$prepare_cb> argument of
		221	C<AnyEvent::Socket::tcp_connect> for details.
		222
		223	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		224
		225	In even rarer cases you want total control over how AnyEvent::HTTP
		226	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		227	to do this, but you can provide your own C<tcp_connect> function -
		228	obviously, it has to follow the same calling conventions, except that it
		229	may always return a connection guard object.
		230
		231	There are probably lots of weird uses for this function, starting from
		232	tracing the hosts C<http_request> actually tries to connect, to (inexact
		233	but fast) host => IP address caching or even socks protocol support.
		234
		235	=item on_header => $callback->($headers)
		236
		237	When specified, this callback will be called with the header hash as soon
		238	as headers have been successfully received from the remote server (not on
		239	locally-generated errors).
		240
		241	It has to return either true (in which case AnyEvent::HTTP will continue),
		242	or false, in which case AnyEvent::HTTP will cancel the download (and call
		243	the finish callback with an error code of C<598>).
		244
		245	This callback is useful, among other things, to quickly reject unwanted
		246	content, which, if it is supposed to be rare, can be faster than first
		247	doing a C<HEAD> request.
		248
		249	The downside is that cancelling the request makes it impossible to re-use
		250	the connection. Also, the C<on_header> callback will not receive any
		251	trailer (headers sent after the response body).
		252
		253	Example: cancel the request unless the content-type is "text/html".
		254
		255	on_header => sub {
		256	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		257	},
		258
		259	=item on_body => $callback->($partial_body, $headers)
		260
		261	When specified, all body data will be passed to this callback instead of
		262	to the completion callback. The completion callback will get the empty
		263	string instead of the body data.
		264
		265	It has to return either true (in which case AnyEvent::HTTP will continue),
		266	or false, in which case AnyEvent::HTTP will cancel the download (and call
		267	the completion callback with an error code of C<598>).
		268
		269	The downside to cancelling the request is that it makes it impossible to
		270	re-use the connection.
		271
		272	This callback is useful when the data is too large to be held in memory
		273	(so the callback writes it to a file) or when only some information should
		274	be extracted, or when the body should be processed incrementally.
		275
		276	It is usually preferred over doing your own body handling via
		277	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		278	only used to create a connection, C<want_body_handle> is the better
		279	alternative, as it allows you to install your own event handler, reducing
		280	resource usage.
		281
		282	=item want_body_handle => $enable
		283
		284	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		285	changes considerably: after parsing the headers, and instead of
		286	downloading the body (if any), the completion callback will be
		287	called. Instead of the C<$body> argument containing the body data, the
		288	callback will receive the L<AnyEvent::Handle> object associated with the
		289	connection. In error cases, C<undef> will be passed. When there is no body
		290	(e.g. status C<304>), the empty string will be passed.
		291
		292	The handle object might or might not be in TLS mode, might be connected to
		293	a proxy, be a persistent connection etc., and configured in unspecified
		294	ways. The user is responsible for this handle (it will not be used by this
		295	module anymore).
		296
		297	This is useful with some push-type services, where, after the initial
		298	headers, an interactive protocol is used (typical example would be the
		299	push-style twitter API which starts a JSON/XML stream).
		300
		301	If you think you need this, first have a look at C<on_body>, to see if
		302	that doesn't solve your problem in a better way.
164		303
165	=back	304	=back
166		305
167	Example: make a simple HTTP GET request for http://www.nethype.de/	306	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		307	the response body.
168		308
169	http_request GET => "http://www.nethype.de/", sub {	309	http_request GET => "http://www.nethype.de/", sub {
170	my ($body, $hdr) = @_;	310	my ($body, $hdr) = @_;
171	print "$body\n";	311	print "$body\n";
172	};	312	};
173		313
174	Example: make a HTTP HEAD request on https://www.google.com/, use a	314	Example: do a HTTP HEAD request on https://www.google.com/, use a
175	timeout of 30 seconds.	315	timeout of 30 seconds.
176		316
177	http_request	317	http_request
178	GET => "https://www.google.com",	318	GET => "https://www.google.com",
179	timeout => 30,	319	timeout => 30,
…		…
181	my ($body, $hdr) = @_;	321	my ($body, $hdr) = @_;
182	use Data::Dumper;	322	use Data::Dumper;
183	print Dumper $hdr;	323	print Dumper $hdr;
184	}	324	}
185	;	325	;
		326
		327	Example: do another simple HTTP GET request, but immediately try to
		328	cancel it.
		329
		330	my $request = http_request GET => "http://www.nethype.de/", sub {
		331	my ($body, $hdr) = @_;
		332	print "$body\n";
		333	};
		334
		335	undef $request;
186		336
187	=cut	337	=cut
188		338
189	sub _slot_schedule;	339	sub _slot_schedule;
190	sub _slot_schedule($) {	340	sub _slot_schedule($) {
…		…
214	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	364	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
215		365
216	_slot_schedule $_[0];	366	_slot_schedule $_[0];
217	}	367	}
218		368
		369	# extract cookies from jar
		370	sub cookie_jar_extract($$$$) {
		371	my ($jar, $uscheme, $uhost, $upath) = @_;
		372
		373	%$jar = () if $jar->{version} != 1;
		374
		375	my @cookies;
		376
		377	while (my ($chost, $paths) = each %$jar) {
		378	next unless ref $paths;
		379
		380	if ($chost =~ /^\./) {
		381	next unless $chost eq substr $uhost, -length $chost;
		382	} elsif ($chost =~ /\./) {
		383	next unless $chost eq $uhost;
		384	} else {
		385	next;
		386	}
		387
		388	while (my ($cpath, $cookies) = each %$paths) {
		389	next unless $cpath eq substr $upath, 0, length $cpath;
		390
		391	while (my ($cookie, $kv) = each %$cookies) {
		392	next if $uscheme ne "https" && exists $kv->{secure};
		393
		394	if (exists $kv->{expires}) {
		395	if (AE::now > parse_date ($kv->{expires})) {
		396	delete $cookies->{$cookie};
		397	next;
		398	}
		399	}
		400
		401	my $value = $kv->{value};
		402
		403	if ($value =~ /[=;,[:space:]]/) {
		404	$value =~ s/([\\"])/\\$1/g;
		405	$value = "\"$value\"";
		406	}
		407
		408	push @cookies, "$cookie=$value";
		409	}
		410	}
		411	}
		412
		413	\@cookies
		414	}
		415
		416	# parse set_cookie header into jar
		417	sub cookie_jar_set_cookie($$$) {
		418	my ($jar, $set_cookie, $uhost) = @_;
		419
		420	for ($set_cookie) {
		421	# parse NAME=VALUE
		422	my @kv;
		423
		424	while (
		425	m{
		426	\G\s*
		427	(?:
		428	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
		429	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		430	)
		431	}gcxsi
		432	) {
		433	my $name = $2;
		434	my $value = $4;
		435
		436	unless (defined $name) {
		437	# expires
		438	$name = "expires";
		439	$value = $1;
		440	} elsif (!defined $value) {
		441	# quoted
		442	$value = $3;
		443	$value =~ s/\\(.)/$1/gs;
		444	}
		445
		446	push @kv, lc $name, $value;
		447
		448	last unless /\G\s*;/gc;
		449	}
		450
		451	last unless @kv;
		452
		453	my $name = shift @kv;
		454	my %kv = (value => shift @kv, @kv);
		455
		456	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		457	if exists $kv{"max-age"};
		458
		459	my $cdom;
		460	my $cpath = (delete $kv{path}) \|\| "/";
		461
		462	if (exists $kv{domain}) {
		463	$cdom = delete $kv{domain};
		464
		465	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		466
		467	next if $cdom =~ /\.$/;
		468
		469	# this is not rfc-like and not netscape-like. go figure.
		470	my $ndots = $cdom =~ y/.//;
		471	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		472	} else {
		473	$cdom = $uhost;
		474	}
		475
		476	# store it
		477	$jar->{version} = 1;
		478	$jar->{$cdom}{$cpath}{$name} = \%kv;
		479
		480	redo if /\G\s*,/gc;
		481	}
		482	}
		483
		484	# continue to parse $_ for headers and place them into the arg
		485	sub parse_hdr() {
		486	my %hdr;
		487
		488	# things seen, not parsed:
		489	# p3pP="NON CUR OTPi OUR NOR UNI"
		490
		491	$hdr{lc $1} .= ",$2"
		492	while /\G
		493	([^:\000-\037]*):
		494	[\011\040]*
		495	((?: [^\012]+ \| \012[\011\040] )*)
		496	\012
		497	/gxc;
		498
		499	/\G$/
		500	or return;
		501
		502	# remove the "," prefix we added to all headers above
		503	substr $_, 0, 1, ""
		504	for values %hdr;
		505
		506	\%hdr
		507	}
		508
		509	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		510
		511	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		512	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		513
219	sub http_request($$@) {	514	sub http_request($$@) {
220	my $cb = pop;	515	my $cb = pop;
221	my ($method, $url, %arg) = @_;	516	my ($method, $url, %arg) = @_;
222		517
223	my %hdr;	518	my %hdr;
		519
		520	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		521	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
224		522
225	$method = uc $method;	523	$method = uc $method;
226		524
227	if (my $hdr = $arg{headers}) {	525	if (my $hdr = $arg{headers}) {
228	while (my ($k, $v) = each %$hdr) {	526	while (my ($k, $v) = each %$hdr) {
229	$hdr{lc $k} = $v;	527	$hdr{lc $k} = $v;
230	}	528	}
231	}	529	}
232		530
		531	# pseudo headers for all subsequent responses
		532	my @pseudo = (URL => $url);
		533	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		534
233	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	535	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
234		536
235	return $cb->(undef, { Status => 599, Reason => "recursion limit reached" })	537	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
236	if $recurse < 0;	538	if $recurse < 0;
237		539
238	my $proxy = $arg{proxy} \|\| $PROXY;	540	my $proxy = $arg{proxy} \|\| $PROXY;
239	my $timeout = $arg{timeout} \|\| $TIMEOUT;	541	my $timeout = $arg{timeout} \|\| $TIMEOUT;
240		542
241	$hdr{"user-agent"} \|\|= $USERAGENT;
242
243	my ($scheme, $authority, $upath, $query, $fragment) =	543	my ($uscheme, $uauthority, $upath, $query, $fragment) =
244	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	544	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
245		545
246	$scheme = lc $scheme;	546	$uscheme = lc $uscheme;
247		547
248	my $uport = $scheme eq "http" ? 80	548	my $uport = $uscheme eq "http" ? 80
249	: $scheme eq "https" ? 443	549	: $uscheme eq "https" ? 443
250	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" });	550	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
251		551
252	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
253
254	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	552	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
255	or return $cb->(undef, { Status => 599, Reason => "unparsable URL" });	553	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
256		554
257	my $uhost = $1;	555	my $uhost = $1;
258	$uport = $2 if defined $2;	556	$uport = $2 if defined $2;
259		557
		558	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		559	unless exists $hdr{host};
		560
260	$uhost =~ s/^\[(.*)\]$/$1/;	561	$uhost =~ s/^\[(.*)\]$/$1/;
261	$upath .= "?$query" if length $query;	562	$upath .= $query if length $query;
262		563
263	$upath =~ s%^/?%/%;	564	$upath =~ s%^/?%/%;
264		565
265	# cookie processing	566	# cookie processing
266	if (my $jar = $arg{cookie_jar}) {	567	if (my $jar = $arg{cookie_jar}) {
267	%$jar = () if $jar->{version} < 1;	568	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
268		569
269	my @cookie;
270
271	while (my ($chost, $v) = each %$jar) {
272	next unless $chost eq substr $uhost, -length $chost;
273	next unless $chost =~ /^\./;
274
275	while (my ($cpath, $v) = each %$v) {
276	next unless $cpath eq substr $upath, 0, length $cpath;
277
278	while (my ($k, $v) = each %$v) {
279	next if $scheme ne "https" && exists $v->{secure};
280	push @cookie, "$k=$v->{value}";
281	}
282	}
283	}
284
285	$hdr{cookie} = join "; ", @cookie	570	$hdr{cookie} = join "; ", @$cookies
286	if @cookie;	571	if @$cookies;
287	}	572	}
288		573
289	my ($rhost, $rport, $rpath); # request host, port, path	574	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
290		575
291	if ($proxy) {	576	if ($proxy) {
292	($rhost, $rport, $scheme) = @$proxy;	577	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
293	$rpath = $url;	578
		579	$rscheme = "http" unless defined $rscheme;
		580
		581	# don't support https requests over https-proxy transport,
		582	# can't be done with tls as spec'ed, unless you double-encrypt.
		583	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
294	} else {	584	} else {
295	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	585	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
296	$hdr{host} = $uhost;
297	}	586	}
298		587
		588	# leave out fragment and query string, just a heuristic
		589	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		590	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		591
299	$hdr{"content-length"} = length $arg{body};	592	$hdr{"content-length"} = length $arg{body}
		593	if length $arg{body} \|\| $method ne "GET";
		594
		595	$hdr{connection} = "close TE"; #1.1
		596	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
300		597
301	my %state = (connect_guard => 1);	598	my %state = (connect_guard => 1);
302		599
303	_get_slot $uhost, sub {	600	_get_slot $uhost, sub {
304	$state{slot_guard} = shift;	601	$state{slot_guard} = shift;
305		602
306	return unless $state{connect_guard};	603	return unless $state{connect_guard};
307		604
308	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	605	my $connect_cb = sub {
309	$state{fh} = shift	606	$state{fh} = shift
		607	or do {
		608	my $err = "$!";
		609	%state = ();
310	or return $cb->(undef, { Status => 599, Reason => "$!" });	610	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		611	};
311		612
312	delete $state{connect_guard}; # reduce memory usage, save a tree	613	pop; # free memory, save a tree
		614
		615	return unless delete $state{connect_guard};
313		616
314	# get handle	617	# get handle
315	$state{handle} = new AnyEvent::Handle	618	$state{handle} = new AnyEvent::Handle
316	fh => $state{fh},	619	fh => $state{fh},
317	($scheme eq "https" ? (tls => "connect") : ());	620	peername => $rhost,
		621	tls_ctx => $arg{tls_ctx},
		622	# these need to be reconfigured on keepalive handles
		623	timeout => $timeout,
		624	on_error => sub {
		625	%state = ();
		626	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		627	},
		628	on_eof => sub {
		629	%state = ();
		630	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		631	},
		632	;
318		633
319	# limit the number of persistent connections	634	# limit the number of persistent connections
		635	# keepalive not yet supported
320	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	636	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
321	++$KA_COUNT{$_[1]};	637	# ++$KA_COUNT{$_[1]};
322	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	638	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		639	# --$KA_COUNT{$_[1]}
		640	# };
323	$hdr{connection} = "keep-alive";	641	# $hdr{connection} = "keep-alive";
324	delete $hdr{connection}; # keep-alive not yet supported
325	} else {
326	delete $hdr{connection};
327	}	642	# }
328		643
329	# (re-)configure handle	644	$state{handle}->starttls ("connect") if $rscheme eq "https";
330	$state{handle}->timeout ($timeout);
331	$state{handle}->on_error (sub {
332	my $errno = "$!";
333	%state = ();
334	$cb->(undef, { Status => 599, Reason => $errno });
335	});
336	$state{handle}->on_eof (sub {
337	%state = ();
338	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });
339	});
340		645
		646	# handle actual, non-tunneled, request
		647	my $handle_actual_request = sub {
		648	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		649
341	# send request	650	# send request
342	$state{handle}->push_write (	651	$state{handle}->push_write (
343	"$method $rpath HTTP/1.0\015\012"	652	"$method $rpath HTTP/1.1\015\012"
344	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	653	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
345	. "\015\012"	654	. "\015\012"
346	. (delete $arg{body})	655	. (delete $arg{body})
347	);
348
349	%hdr = (); # reduce memory usage, save a kitten
350
351	# status line
352	$state{handle}->push_read (line => qr/\015?\012/, sub {
353	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
354	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
355
356	my %hdr = ( # response headers
357	HTTPVersion => "\x00$1",
358	Status => "\x00$2",
359	Reason => "\x00$3",
360	);	656	);
361		657
362	# headers, could be optimized a bit	658	# return if error occured during push_write()
363	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	659	return unless %state;
		660
		661	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
		662
		663	# status line and headers
		664	$state{read_response} = sub {
364	for ("$_[1]\012") {	665	for ("$_[1]") {
365	# we support spaces in field names, as lotus domino	666	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
366	# creates them.
367	$hdr{lc $1} .= "\x00$2"
368	while /\G
369	([^:\000-\037]+):
370	[\011\040]*
371	((?: [^\015\012]+ \| \015?\012[\011\040] )*)
372	\015?\012
373	/gxc;
374		667
		668	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
		669	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
		670
		671	# 100 Continue handling
		672	# should not happen as we don't send expect: 100-continue,
		673	# but we handle it just in case.
		674	# since we send the request body regardless, if we get an error
		675	# we are out of-sync, which we currently do NOT handle correctly.
		676	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		677	if $2 eq 100;
		678
		679	push @pseudo,
		680	HTTPVersion => $1,
		681	Status => $2,
		682	Reason => $3,
375	/\G$/	683	;
		684
		685	my $hdr = parse_hdr
376	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" }));	686	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		687
		688	%hdr = (%$hdr, @pseudo);
377	}	689	}
378		690
379	substr $_, 0, 1, ""	691	# redirect handling
380	for values %hdr;	692	# microsoft and other shitheads don't give a shit for following standards,
		693	# try to support some common forms of broken Location headers.
		694	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		695	$hdr{location} =~ s/^\.\/+//;
381		696
382	my $finish = sub {	697	my $url = "$rscheme://$uhost:$uport";
		698
		699	unless ($hdr{location} =~ s/^\///) {
		700	$url .= $upath;
		701	$url =~ s/\/[^\/]*$//;
		702	}
		703
		704	$hdr{location} = "$url/$hdr{location}";
		705	}
		706
		707	my $redirect;
		708
		709	if ($recurse) {
		710	my $status = $hdr{Status};
		711
		712	# industry standard is to redirect POST as GET for
		713	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		714	# also, the UA should ask the user for 301 and 307 and POST,
		715	# industry standard seems to be to simply follow.
		716	# we go with the industry standard.
		717	if ($status == 301 or $status == 302 or $status == 303) {
		718	# HTTP/1.1 is unclear on how to mutate the method
		719	$method = "GET" unless $method eq "HEAD";
		720	$redirect = 1;
		721	} elsif ($status == 307) {
		722	$redirect = 1;
		723	}
		724	}
		725
		726	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		727	my $may_keep_alive = $_[3];
		728
		729	$state{handle}->destroy if $state{handle};
383	%state = ();	730	%state = ();
384		731
		732	if (defined $_[1]) {
		733	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		734	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		735	}
		736
385	# set-cookie processing	737	# set-cookie processing
386	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {	738	if ($arg{cookie_jar}) {
387	for (split /\x00/, $hdr{"set-cookie"}) {	739	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
388	my ($cookie, @arg) = split /;\s*/;	740	}
389	my ($name, $value) = split /=/, $cookie, 2;
390	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
391
392	my $cdom = (delete $kv{domain}) \|\| $uhost;
393	my $cpath = (delete $kv{path}) \|\| "/";
394
395	$cdom =~ s/^.?/./; # make sure it starts with a "."
396		741
397	next if $cdom =~ /\.$/;	742	if ($redirect && exists $hdr{location}) {
398		743	# we ignore any errors, as it is very common to receive
399	# this is not rfc-like and not netscape-like. go figure.	744	# Content-Length != 0 but no actual body
400	my $ndots = $cdom =~ y/.//;	745	# we also access %hdr, as $_[1] might be an erro
401	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	746	http_request (
402		747	$method => $hdr{location},
		748	%arg,
		749	recurse => $recurse - 1,
		750	Redirect => [$_[0], \%hdr],
		751	$cb);
		752	} else {
		753	$cb->($_[0], \%hdr);
		754	}
		755	};
		756
		757	my $len = $hdr{"content-length"};
		758
		759	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		760	$finish->(undef, 598 => "Request cancelled by on_header");
		761	} elsif (
		762	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		763	or $method eq "HEAD"
		764	or (defined $len && !$len)
		765	) {
		766	# no body
		767	$finish->("", undef, undef, 1);
		768	} else {
		769	# body handling, many different code paths
		770	# - no body expected
		771	# - want_body_handle
		772	# - te chunked
		773	# - 2x length known (with or without on_body)
		774	# - 2x length not known (with or without on_body)
		775	if (!$redirect && $arg{want_body_handle}) {
		776	$_[0]->on_eof (undef);
		777	$_[0]->on_error (undef);
		778	$_[0]->on_read (undef);
		779
		780	$finish->(delete $state{handle});
		781
		782	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		783	my $cl = 0;
		784	my $body = undef;
		785	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		786
		787	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		788
		789	my $read_chunk; $read_chunk = sub {
		790	$_[1] =~ /^([0-9a-fA-F]+)/
		791	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		792
		793	my $len = hex $1;
		794
		795	if ($len) {
		796	$cl += $len;
		797
		798	$_[0]->push_read (chunk => $len, sub {
		799	$on_body->($_[1], \%hdr)
		800	or return $finish->(undef, 598 => "Request cancelled by on_body");
		801
		802	$_[0]->push_read (line => sub {
		803	length $_[1]
		804	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		805	$_[0]->push_read (line => $read_chunk);
		806	});
		807	});
403	# store it	808	} else {
404	$arg{cookie_jar}{version} = 1;	809	$hdr{"content-length"} \|\|= $cl;
405	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	810
		811	$_[0]->push_read (line => $qr_nlnl, sub {
		812	if (length $_[1]) {
		813	for ("$_[1]") {
		814	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		815
		816	my $hdr = parse_hdr
		817	or return $finish->(undef, 599 => "Garbled response trailers");
		818
		819	%hdr = (%hdr, %$hdr);
		820	}
		821	}
		822
		823	$finish->($body, undef, undef, 1);
		824	});
		825	}
		826	};
		827
		828	$_[0]->push_read (line => $read_chunk);
		829
		830	} elsif ($arg{on_body}) {
		831	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		832
		833	if ($len) {
		834	$_[0]->on_read (sub {
		835	$len -= length $_[0]{rbuf};
		836
		837	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		838	or return $finish->(undef, 598 => "Request cancelled by on_body");
		839
		840	$len > 0
		841	or $finish->("", undef, undef, 1);
		842	});
		843	} else {
		844	$_[0]->on_eof (sub {
		845	$finish->("");
		846	});
		847	$_[0]->on_read (sub {
		848	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		849	or $finish->(undef, 598 => "Request cancelled by on_body");
		850	});
		851	}
		852	} else {
		853	$_[0]->on_eof (undef);
		854
		855	if ($len) {
		856	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		857	$_[0]->on_read (sub {
		858	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		859	if $len <= length $_[0]{rbuf};
		860	});
		861	} else {
		862	$_[0]->on_error (sub {
		863	($! == Errno::EPIPE \|\| !$!)
		864	? $finish->(delete $_[0]{rbuf})
		865	: $finish->(undef, 599 => $_[2]);
		866	});
		867	$_[0]->on_read (sub { });
406	}	868	}
407	}	869	}
408
409	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {
410	# microsoft and other assholes don't give a shit for following standards,
411	# try to support a common form of broken Location header.
412	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
413
414	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
415	} else {
416	$cb->($_[0], $_[1]);
417	}
418	};	870	}
		871	};
419		872
420	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	873	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
421	$finish->(undef, \%hdr);	874	};
		875
		876	# now handle proxy-CONNECT method
		877	if ($proxy && $uscheme eq "https") {
		878	# oh dear, we have to wrap it into a connect request
		879
		880	# maybe re-use $uauthority with patched port?
		881	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		882	$state{handle}->push_read (line => $qr_nlnl, sub {
		883	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		884	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
		885
		886	if ($2 == 200) {
		887	$rpath = $upath;
		888	&$handle_actual_request;
422	} else {	889	} else {
423	if (exists $hdr{"content-length"}) {	890	%state = ();
424	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	891	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
425	# could cache persistent connection now
426	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
427	# but we don't, due to misdesigns, this is annoyingly complex
428	};
429
430	$finish->($_[1], \%hdr);
431	});
432	} else {
433	# too bad, need to read until we get an error or EOF,
434	# no way to detect winged data.
435	$_[0]->on_error (sub {
436	$finish->($_[0]{rbuf}, \%hdr);
437	});
438	$_[0]->on_eof (undef);
439	$_[0]->on_read (sub { });
440	}
441	}	892	}
442	});	893	});
		894	} else {
		895	&$handle_actual_request;
443	});	896	}
444	}, sub {
445	$timeout
446	};	897	};
		898
		899	my $tcp_connect = $arg{tcp_connect}
		900	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		901
		902	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		903
447	};	904	};
448		905
449	defined wantarray && AnyEvent::Util::guard { %state = () }	906	defined wantarray && AnyEvent::Util::guard { %state = () }
450	}	907	}
451		908
…		…
458	unshift @_, "HEAD";	915	unshift @_, "HEAD";
459	&http_request	916	&http_request
460	}	917	}
461		918
462	sub http_post($$@) {	919	sub http_post($$@) {
		920	my $url = shift;
463	unshift @_, "POST", "body";	921	unshift @_, "POST", $url, "body";
464	&http_request	922	&http_request
465	}	923	}
466		924
467	=back	925	=back
468		926
		927	=head2 DNS CACHING
		928
		929	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		930	the actual connection, which in turn uses AnyEvent::DNS to resolve
		931	hostnames. The latter is a simple stub resolver and does no caching
		932	on its own. If you want DNS caching, you currently have to provide
		933	your own default resolver (by storing a suitable resolver object in
		934	C<$AnyEvent::DNS::RESOLVER>).
		935
469	=head2 GLOBAL FUNCTIONS AND VARIABLES	936	=head2 GLOBAL FUNCTIONS AND VARIABLES
470		937
471	=over 4	938	=over 4
472		939
473	=item AnyEvent::HTTP::set_proxy "proxy-url"	940	=item AnyEvent::HTTP::set_proxy "proxy-url"
474		941
475	Sets the default proxy server to use. The proxy-url must begin with a	942	Sets the default proxy server to use. The proxy-url must begin with a
476	string of the form C<http://host:port> (optionally C<https:...>).	943	string of the form C<http://host:port> (optionally C<https:...>), croaks
		944	otherwise.
		945
		946	To clear an already-set proxy, use C<undef>.
		947
		948	=item $date = AnyEvent::HTTP::format_date $timestamp
		949
		950	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		951	Date (RFC 2616).
		952
		953	=item $timestamp = AnyEvent::HTTP::parse_date $date
		954
		955	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
		956	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		957	be parsed.
477		958
478	=item $AnyEvent::HTTP::MAX_RECURSE	959	=item $AnyEvent::HTTP::MAX_RECURSE
479		960
480	The default value for the C<recurse> request parameter (default: C<10>).	961	The default value for the C<recurse> request parameter (default: C<10>).
481		962
482	=item $AnyEvent::HTTP::USERAGENT	963	=item $AnyEvent::HTTP::USERAGENT
483		964
484	The default value for the C<User-Agent> header (the default is	965	The default value for the C<User-Agent> header (the default is
485	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	966	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
486		967
487	=item $AnyEvent::HTTP::MAX_PERSISTENT	968	=item $AnyEvent::HTTP::MAX_PER_HOST
488		969
489	The maximum number of persistent connections to keep open (default: 8).	970	The maximum number of concurrent connections to the same host (identified
		971	by the hostname). If the limit is exceeded, then the additional requests
		972	are queued until previous connections are closed.
490		973
491	Not implemented currently.	974	The default value for this is C<4>, and it is highly advisable to not
492		975	increase it.
493	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
494
495	The maximum time to cache a persistent connection, in seconds (default: 2).
496
497	Not implemented currently.
498		976
499	=item $AnyEvent::HTTP::ACTIVE	977	=item $AnyEvent::HTTP::ACTIVE
500		978
501	The number of active connections. This is not the number of currently	979	The number of active connections. This is not the number of currently
502	running requests, but the number of currently open and non-idle TCP	980	running requests, but the number of currently open and non-idle TCP
…		…
504		982
505	=back	983	=back
506		984
507	=cut	985	=cut
508		986
		987	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		988	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		989
		990	sub format_date($) {
		991	my ($time) = @_;
		992
		993	# RFC 822/1123 format
		994	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		995
		996	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		997	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		998	$H, $M, $S;
		999	}
		1000
		1001	sub parse_date($) {
		1002	my ($date) = @_;
		1003
		1004	my ($d, $m, $y, $H, $M, $S);
		1005
		1006	if ($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$/) {
		1007	# RFC 822/1123, required by RFC 2616 (with " ")
		1008	# cookie dates (with "-")
		1009
		1010	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1011
		1012	} elsif ($date =~ /^[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$/) {
		1013	# RFC 850
		1014	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1015
		1016	} elsif ($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])$/) {
		1017	# ISO C's asctime
		1018	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1019	}
		1020	# other formats fail in the loop below
		1021
		1022	for (0..11) {
		1023	if ($m eq $month[$_]) {
		1024	require Time::Local;
		1025	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1026	}
		1027	}
		1028
		1029	undef
		1030	}
		1031
509	sub set_proxy($) {	1032	sub set_proxy($) {
		1033	if (length $_[0]) {
510	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1034	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1035	or Carp::croak "$_[0]: invalid proxy URL";
		1036	$PROXY = [$2, $3 \|\| 3128, $1]
		1037	} else {
		1038	undef $PROXY;
		1039	}
511	}	1040	}
512		1041
513	# initialise proxy from environment	1042	# initialise proxy from environment
		1043	eval {
514	set_proxy $ENV{http_proxy};	1044	set_proxy $ENV{http_proxy};
		1045	};
		1046
		1047	=head2 SOCKS PROXIES
		1048
		1049	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1050	compile your perl to support socks, or use an external program such as
		1051	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1052	transparently.
		1053
		1054	Alternatively, for AnyEvent::HTTP only, you can use your own
		1055	C<tcp_connect> function that does the proxy handshake - here is an example
		1056	that works with socks4a proxies:
		1057
		1058	use Errno;
		1059	use AnyEvent::Util;
		1060	use AnyEvent::Socket;
		1061	use AnyEvent::Handle;
		1062
		1063	# host, port and username of/for your socks4a proxy
		1064	my $socks_host = "10.0.0.23";
		1065	my $socks_port = 9050;
		1066	my $socks_user = "";
		1067
		1068	sub socks4a_connect {
		1069	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1070
		1071	my $hdl = new AnyEvent::Handle
		1072	connect => [$socks_host, $socks_port],
		1073	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1074	on_error => sub { $connect_cb->() },
		1075	;
		1076
		1077	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1078
		1079	$hdl->push_read (chunk => 8, sub {
		1080	my ($hdl, $chunk) = @_;
		1081	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1082
		1083	if ($status == 0x5a) {
		1084	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1085	} else {
		1086	$! = Errno::ENXIO; $connect_cb->();
		1087	}
		1088	});
		1089
		1090	$hdl
		1091	}
		1092
		1093	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1094	possibly after switching off other proxy types:
		1095
		1096	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1097
		1098	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1099	my ($data, $headers) = @_;
		1100	...
		1101	};
515		1102
516	=head1 SEE ALSO	1103	=head1 SEE ALSO
517		1104
518	L<AnyEvent>.	1105	L<AnyEvent>.
519		1106
520	=head1 AUTHOR	1107	=head1 AUTHOR
521		1108
522	Marc Lehmann <schmorp@schmorp.de>	1109	Marc Lehmann <schmorp@schmorp.de>
523	http://home.schmorp.de/	1110	http://home.schmorp.de/
		1111
		1112	With many thanks to Дмитрий Шалашов, who provided countless
		1113	testcases and bugreports.
524		1114
525	=cut	1115	=cut
526		1116
527	1	1117	1
528		1118

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.16 by root, Fri Jun 6 12:57:48 2008 UTC vs. Revision 1.74 by root, Fri Dec 31 22:40:54 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.16 by root, Fri Jun 6 12:57:48 2008 UTC vs.
Revision 1.74 by root, Fri Dec 31 22:40:54 2010 UTC