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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.9 by root, Wed Jun 4 13:51:53 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.
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
…		…
20	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
21		40
22	use strict;	41	use strict;
23	no warnings;	42	no warnings;
24		43
25	use Carp;	44	use Errno ();
26		45
27	use AnyEvent ();	46	use AnyEvent 5.0 ();
28	use AnyEvent::Util ();	47	use AnyEvent::Util ();
29	use AnyEvent::Socket ();
30	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
31		49
32	use base Exporter::;	50	use base Exporter::;
33		51
34	our $VERSION = '1.0';	52	our $VERSION = '1.5';
35		53
36	our @EXPORT = qw(http_get http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
37		55
38	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)";
39	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
40	our $MAX_PERSISTENT = 8;	58	our $MAX_PERSISTENT = 8;
41	our $PERSISTENT_TIMEOUT = 2;	59	our $PERSISTENT_TIMEOUT = 2;
42	our $TIMEOUT = 300;	60	our $TIMEOUT = 300;
43		61
44	# changing these is evil	62	# changing these is evil
45	our $MAX_PERSISTENT_PER_HOST = 2;	63	our $MAX_PERSISTENT_PER_HOST = 0;
46	our $MAX_PER_HOST = 4; # not respected yet :(	64	our $MAX_PER_HOST = 4;
47		65
48	our $PROXY;	66	our $PROXY;
		67	our $ACTIVE = 0;
49		68
50	my %KA_COUNT; # number of open keep-alive connections per host	69	my %KA_COUNT; # number of open keep-alive connections per host
		70	my %CO_SLOT; # number of open connections, and wait queue, per host
51		71
52	=item http_get $url, key => value..., $cb->($data, $headers)	72	=item http_get $url, key => value..., $cb->($data, $headers)
53		73
54	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
55	additional parameters.	75	additional parameters and the return value.
56		76
57	=item http_head $url, key => value..., $cb->($data, $headers)	77	=item http_head $url, key => value..., $cb->($data, $headers)
58		78
59	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
60	additional parameters.	80	on additional parameters and the return value.
61		81
62	=item http_post $url, $body, key => value..., $cb->($data, $headers)	82	=item http_post $url, $body, key => value..., $cb->($data, $headers)
63		83
64	Executes an HTTP-POST request with a request body of C<$bod>. See the	84	Executes an HTTP-POST request with a request body of C<$body>. See the
65	http_request function for details on additional parameters.	85	http_request function for details on additional parameters and the return
		86	value.
66		87
67	=item http_request $method => $url, key => value..., $cb->($data, $headers)	88	=item http_request $method => $url, key => value..., $cb->($data, $headers)
68		89
69	Executes a HTTP request of type C<$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
70	must be an absolute http or https URL.	91	must be an absolute http or https URL.
71		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
72	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
73	(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
74	response headers as second argument.	100	(and trailers) as second argument.
75		101
76	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
77	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
78	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
79	name.	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	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
		122
		123	If the server sends a header multiple times, then their contents will be
		124	joined together with a comma (C<,>), as per the HTTP spec.
80		125
81	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
82	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
83	and the C<Reason> pseudo-header will contain an error message.	128	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		129	message.
84		130
85	A typical callback might look like this:	131	A typical callback might look like this:
86		132
87	sub {	133	sub {
88	my ($body, $hdr) = @_;	134	my ($body, $hdr) = @_;
…		…
104	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
105	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
106		152
107	=item headers => hashref	153	=item headers => hashref
108		154
109	The request headers to use.	155	The request headers to use. Currently, C<http_request> may provide its own
		156	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
		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).
110		160
111	=item timeout => $seconds	161	=item timeout => $seconds
112		162
113	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
114	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
115		168
116	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
117		170
118	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
119	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
120		173
121	C<$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
122	HTTPS.	175	HTTPS.
123		176
124	=item body => $string	177	=item body => $string
125		178
126	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
127	this module might offer more options).	180	this module might offer more options).
128		181
		182	=item cookie_jar => $hash_ref
		183
		184	Passing this parameter enables (simplified) cookie-processing, loosely
		185	based on the original netscape specification.
		186
		187	The C<$hash_ref> must be an (initially empty) hash reference which will
		188	get updated automatically. It is possible to save the cookie jar to
		189	persistent storage with something like JSON or Storable, but this is not
		190	recommended, as session-only cookies might survive longer than expected.
		191
		192	Note that this cookie implementation is not meant to be complete. If
		193	you want complete cookie management you have to do that on your
		194	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
		195	working. Cookies are a privacy disaster, do not use them unless required
		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.
		303
129	=back	304	=back
130		305
131	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.
132		308
133	http_request GET => "http://www.nethype.de/", sub {	309	http_request GET => "http://www.nethype.de/", sub {
134	my ($body, $hdr) = @_;	310	my ($body, $hdr) = @_;
135	print "$body\n";	311	print "$body\n";
136	};	312	};
137		313
138	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
139	timeout of 30 seconds.	315	timeout of 30 seconds.
140		316
141	http_request	317	http_request
142	GET => "https://www.google.com",	318	GET => "https://www.google.com",
143	timeout => 30,	319	timeout => 30,
…		…
146	use Data::Dumper;	322	use Data::Dumper;
147	print Dumper $hdr;	323	print Dumper $hdr;
148	}	324	}
149	;	325	;
150		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 $request;
		336
151	=cut	337	=cut
152		338
		339	sub _slot_schedule;
		340	sub _slot_schedule($) {
		341	my $host = shift;
		342
		343	while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) {
		344	if (my $cb = shift @{ $CO_SLOT{$host}[1] }) {
		345	# somebody wants that slot
		346	++$CO_SLOT{$host}[0];
		347	++$ACTIVE;
		348
		349	$cb->(AnyEvent::Util::guard {
		350	--$ACTIVE;
		351	--$CO_SLOT{$host}[0];
		352	_slot_schedule $host;
		353	});
		354	} else {
		355	# nobody wants the slot, maybe we can forget about it
		356	delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0];
		357	last;
		358	}
		359	}
		360	}
		361
		362	# wait for a free slot on host, call callback
		363	sub _get_slot($$) {
		364	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
		365
		366	_slot_schedule $_[0];
		367	}
		368
		369	# extract cookies from jar
		370	sub cookie_jar_extract($$$$) {
		371	my ($jar, $uscheme, $uhost, $upath) = @_;
		372
		373	%$jar = () if $jar->{version} != 1;
		374
		375	my @cookies;
		376
		377	while (my ($chost, $paths) = each %$jar) {
		378	next unless ref $paths;
		379
		380	if ($chost =~ /^\./) {
		381	next unless $chost eq substr $uhost, -length $chost;
		382	} elsif ($chost =~ /\./) {
		383	next unless $chost eq $uhost;
		384	} else {
		385	next;
		386	}
		387
		388	while (my ($cpath, $cookies) = each %$paths) {
		389	next unless $cpath eq substr $upath, 0, length $cpath;
		390
		391	while (my ($cookie, $kv) = each %$cookies) {
		392	next if $uscheme ne "https" && exists $kv->{secure};
		393
		394	if (exists $kv->{expires}) {
		395	if (AE::now > parse_date ($kv->{expires})) {
		396	delete $cookies->{$cookie};
		397	next;
		398	}
		399	}
		400
		401	my $value = $kv->{value};
		402
		403	if ($value =~ /[=;,[:space:]]/) {
		404	$value =~ s/([\\"])/\\$1/g;
		405	$value = "\"$value\"";
		406	}
		407
		408	push @cookies, "$cookie=$value";
		409	}
		410	}
		411	}
		412
		413	\@cookies
		414	}
		415
		416	# parse set_cookie header into jar
		417	sub cookie_jar_set_cookie($$$) {
		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
153	sub http_request($$$;@) {	514	sub http_request($$@) {
154	my $cb = pop;	515	my $cb = pop;
155	my ($method, $url, %arg) = @_;	516	my ($method, $url, %arg) = @_;
156		517
157	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";
158		522
159	$method = uc $method;	523	$method = uc $method;
160		524
161	if (my $hdr = $arg{headers}) {	525	if (my $hdr = $arg{headers}) {
162	while (my ($k, $v) = each %$hdr) {	526	while (my ($k, $v) = each %$hdr) {
163	$hdr{lc $k} = $v;	527	$hdr{lc $k} = $v;
164	}	528	}
165	}	529	}
166		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
167	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	535	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
168		536
169	return $cb->(undef, { Status => 599, Reason => "recursion limit reached" })	537	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
170	if $recurse < 0;	538	if $recurse < 0;
171		539
172	my $proxy = $arg{proxy} \|\| $PROXY;	540	my $proxy = $arg{proxy} \|\| $PROXY;
173	my $timeout = $arg{timeout} \|\| $TIMEOUT;	541	my $timeout = $arg{timeout} \|\| $TIMEOUT;
174		542
175	$hdr{"user-agent"} \|\|= $USERAGENT;	543	my ($uscheme, $uauthority, $upath, $query, $fragment) =
		544	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
176		545
177	my ($host, $port, $path, $scheme);	546	$uscheme = lc $uscheme;
		547
		548	my $uport = $uscheme eq "http" ? 80
		549	: $uscheme eq "https" ? 443
		550	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
		551
		552	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
		553	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
		554
		555	my $uhost = $1;
		556	$uport = $2 if defined $2;
		557
		558	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		559	unless exists $hdr{host};
		560
		561	$uhost =~ s/^\[(.*)\]$/$1/;
		562	$upath .= $query if length $query;
		563
		564	$upath =~ s%^/?%/%;
		565
		566	# cookie processing
		567	if (my $jar = $arg{cookie_jar}) {
		568	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
		569
		570	$hdr{cookie} = join "; ", @$cookies
		571	if @$cookies;
		572	}
		573
		574	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
178		575
179	if ($proxy) {	576	if ($proxy) {
180	($host, $port, $scheme) = @$proxy;	577	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
181	$path = $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" && $rscheme eq "https";
182	} else {	584	} else {
183	($scheme, my $authority, $path, my $query, my $fragment) =	585	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
184	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
185
186	$port = $scheme eq "http" ? 80
187	: $scheme eq "https" ? 443
188	: return $cb->(undef, { Status => 599, Reason => "$url: only http and https URLs supported" });
189
190	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
191	or return $cb->(undef, { Status => 599, Reason => "$url: unparsable URL" });
192
193	$host = $1;
194	$port = $2 if defined $2;
195
196	$host =~ s/^\[(.*)\]$/$1/;
197	$path .= "?$query" if length $query;
198
199	$path = "/" unless $path;
200
201	$hdr{host} = $host = lc $host;
202	}	586	}
203		587
204	$scheme = lc $scheme;	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"};
205		591
206	my %state;
207
208	$hdr{"content-length"} = length $arg{body};	592	$hdr{"content-length"} = length $arg{body}
		593	if length $arg{body} \|\| $method ne "GET";
209		594
210	$state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub {	595	$hdr{connection} = "close TE"; #1.1
		596	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		597
		598	my %state = (connect_guard => 1);
		599
		600	_get_slot $uhost, sub {
		601	$state{slot_guard} = shift;
		602
		603	return unless $state{connect_guard};
		604
		605	my $connect_cb = sub {
211	$state{fh} = shift	606	$state{fh} = shift
		607	or do {
		608	my $err = "$!";
		609	%state = ();
212	or return $cb->(undef, { Status => 599, Reason => "$!" });	610	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		611	};
213		612
214	delete $state{connect_guard}; # reduce memory usage, save a tree	613	pop; # free memory, save a tree
215		614
		615	return unless delete $state{connect_guard};
		616
216	# get handle	617	# get handle
217	$state{handle} = new AnyEvent::Handle	618	$state{handle} = new AnyEvent::Handle
218	fh => $state{fh},	619	fh => $state{fh},
219	($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	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		631	},
		632	;
220		633
221	# limit the number of persistent connections	634	# limit the number of persistent connections
		635	# keepalive not yet supported
222	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	636	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
223	++$KA_COUNT{$_[1]};	637	# ++$KA_COUNT{$_[1]};
224	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	638	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		639	# --$KA_COUNT{$_[1]}
		640	# };
225	$hdr{connection} = "keep-alive";	641	# $hdr{connection} = "keep-alive";
226	delete $hdr{connection}; # keep-alive not yet supported
227	} else {
228	delete $hdr{connection};
229	}	642	# }
230		643
231	# (re-)configure handle	644	$state{handle}->starttls ("connect") if $rscheme eq "https";
232	$state{handle}->timeout ($timeout);
233	$state{handle}->on_error (sub {
234	%state = ();
235	$cb->(undef, { Status => 599, Reason => "$!" });
236	});
237	$state{handle}->on_eof (sub {
238	%state = ();
239	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });
240	});
241		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
242	# send request	650	# send request
243	$state{handle}->push_write (	651	$state{handle}->push_write (
244	"$method $path HTTP/1.0\015\012"	652	"$method $rpath HTTP/1.1\015\012"
245	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	653	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
246	. "\015\012"	654	. "\015\012"
247	. (delete $arg{body})	655	. (delete $arg{body})
248	);
249
250	%hdr = (); # reduce memory usage, save a kitten
251
252	# status line
253	$state{handle}->push_read (line => qr/\015?\012/, sub {
254	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
255	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
256
257	my %hdr = ( # response headers
258	HTTPVersion => ",$1",
259	Status => ",$2",
260	Reason => ",$3",
261	);	656	);
262		657
263	# headers, could be optimized a bit	658	# return if error occured during push_write()
264	$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	$state{read_response} = sub {
265	for ("$_[1]\012") {	665	for ("$_[1]") {
266	# 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.
267	# creates them.	667
268	$hdr{lc $1} .= ",$2"	668	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
269	while /\G	669	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
270	([^:\000-\037]+):	670
271	[\011\040]*	671	# 100 Continue handling
272	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	672	# should not happen as we don't send expect: 100-continue,
273	\015?\012	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 => $3,
274	/gxc;	683	;
275		684
276	/\G$/	685	my $hdr = parse_hdr
277	or return $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);
278	}	689	}
279		690
280	substr $_, 0, 1, ""	691	# redirect handling
281	for values %hdr;	692	# microsoft and other shitheads don't give a shit for following standards,
		693	# try to support some common forms of broken Location headers.
		694	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		695	$hdr{location} =~ s/^\.\/+//;
282		696
283	my $finish = sub {	697	my $url = "$rscheme://$uhost:$uport";
284	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	698
285	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	699	unless ($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};
		730	%state = ();
		731
		732	if (defined $_[1]) {
		733	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		734	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		735	}
		736
		737	# set-cookie processing
		738	if ($arg{cookie_jar}) {
		739	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		740	}
		741
		742	if ($redirect && exists $hdr{location}) {
		743	# we ignore any errors, as it is very common to receive
		744	# Content-Length != 0 but no actual body
		745	# we also access %hdr, as $_[1] might be an erro
		746	http_request (
		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);
286	} else {	768	} else {
287	$cb->($_[0], $_[1]);	769	# body handling, many different code paths
		770	# - no body expected
		771	# - want_body_handle
		772	# - te chunked
		773	# - 2x length known (with or without on_body)
		774	# - 2x length not known (with or without on_body)
		775	if (!$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	});
		808	} else {
		809	$hdr{"content-length"} \|\|= $cl;
		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	$_[0]->on_read (sub { });
		868	}
		869	}
288	}	870	}
289	};	871	};
290		872
291	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	873	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
292	%state = ();	874	};
293	$finish->(undef, \%hdr);
294	} else {
295	if (exists $hdr{"content-length"}) {
296	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
297	# could cache persistent connection now
298	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
299	# but we don't, due to misdesigns, this is annoyingly complex
300	};
301		875
302	%state = ();	876	# now handle proxy-CONNECT method
303	$finish->($_[1], \%hdr);	877	if ($proxy && $uscheme eq "https") {
304	});	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;
305	} else {	889	} else {
306	# too bad, need to read until we get an error or EOF,
307	# no way to detect winged data.
308	$_[0]->on_error (sub {
309	%state = ();	890	%state = ();
310	$finish->($_[0]{rbuf}, \%hdr);	891	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
311	});
312	$_[0]->on_eof (undef);
313	$_[0]->on_read (sub { });
314	}	892	}
315	}	893	});
		894	} else {
		895	&$handle_actual_request;
316	});	896	}
317	});	897	};
318	}, sub {	898
319	$timeout	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
320	};	904	};
321		905
322	defined wantarray && AnyEvent::Util::guard { %state = () }	906	defined wantarray && AnyEvent::Util::guard { %state = () }
323	}	907	}
324		908
325	sub http_get($$;@) {	909	sub http_get($@) {
326	unshift @_, "GET";	910	unshift @_, "GET";
327	&http_request	911	&http_request
328	}	912	}
329		913
330	sub http_head($$;@) {	914	sub http_head($@) {
331	unshift @_, "HEAD";	915	unshift @_, "HEAD";
332	&http_request	916	&http_request
333	}	917	}
334		918
335	sub http_post($$$;@) {	919	sub http_post($$@) {
		920	my $url = shift;
336	unshift @_, "POST", "body";	921	unshift @_, "POST", $url, "body";
337	&http_request	922	&http_request
338	}	923	}
339		924
340	=back	925	=back
341		926
		927	=head2 DNS CACHING
		928
		929	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		930	the actual connection, which in turn uses AnyEvent::DNS to resolve
		931	hostnames. The latter is a simple stub resolver and does no caching
		932	on its own. If you want DNS caching, you currently have to provide
		933	your own default resolver (by storing a suitable resolver object in
		934	C<$AnyEvent::DNS::RESOLVER>).
		935
342	=head2 GLOBAL FUNCTIONS AND VARIABLES	936	=head2 GLOBAL FUNCTIONS AND VARIABLES
343		937
344	=over 4	938	=over 4
345		939
346	=item AnyEvent::HTTP::set_proxy "proxy-url"	940	=item AnyEvent::HTTP::set_proxy "proxy-url"
347		941
348	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
349	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.
350		958
351	=item $AnyEvent::HTTP::MAX_RECURSE	959	=item $AnyEvent::HTTP::MAX_RECURSE
352		960
353	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>).
354		962
355	=item $AnyEvent::HTTP::USERAGENT	963	=item $AnyEvent::HTTP::USERAGENT
356		964
357	The default value for the C<User-Agent> header (the default is	965	The default value for the C<User-Agent> header (the default is
358	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	966	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
359		967
360	=item $AnyEvent::HTTP::MAX_PERSISTENT	968	=item $AnyEvent::HTTP::MAX_PER_HOST
361		969
362	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.
363		973
364	Not implemented currently.	974	The default value for this is C<4>, and it is highly advisable to not
		975	increase it.
365		976
366	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT	977	=item $AnyEvent::HTTP::ACTIVE
367		978
368	The maximum time to cache a persistent connection, in seconds (default: 2).	979	The number of active connections. This is not the number of currently
369		980	running requests, but the number of currently open and non-idle TCP
370	Not implemented currently.	981	connections. This number of can be useful for load-leveling.
371		982
372	=back	983	=back
373		984
374	=cut	985	=cut
375		986
		987	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		988	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		989
		990	sub format_date($) {
		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, $_, $y);
		1026	}
		1027	}
		1028
		1029	undef
		1030	}
		1031
376	sub set_proxy($) {	1032	sub set_proxy($) {
		1033	if (length $_[0]) {
377	$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	}
378	}	1040	}
379		1041
380	# initialise proxy from environment	1042	# initialise proxy from environment
		1043	eval {
381	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	};
382		1102
383	=head1 SEE ALSO	1103	=head1 SEE ALSO
384		1104
385	L<AnyEvent>.	1105	L<AnyEvent>.
386		1106
387	=head1 AUTHOR	1107	=head1 AUTHOR
388		1108
389	Marc Lehmann <schmorp@schmorp.de>	1109	Marc Lehmann <schmorp@schmorp.de>
390	http://home.schmorp.de/	1110	http://home.schmorp.de/
		1111
		1112	With many thanks to Дмитрий Шалашов, who provided countless
		1113	testcases and bugreports.
391		1114
392	=cut	1115	=cut
393		1116
394	1	1117	1
395		1118

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.9 by root, Wed Jun 4 13:51:53 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 1.9 by root, Wed Jun 4 13:51:53 2008 UTC vs.
Revision 1.74 by root, Fri Dec 31 22:40:54 2010 UTC