[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 1.71 by root, Fri Dec 31 20:50:58 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	sub cookie_jar_extract($$$$) {
		370	my ($jar, $uscheme, $uhost, $upath) = @_;
		371
		372	%$jar = () if $jar->{version} != 1;
		373
		374	my @cookies;
		375
		376	while (my ($chost, $paths) = each %$jar) {
		377	next unless ref $paths;
		378
		379	if ($chost =~ /^\./) {
		380	next unless $chost eq substr $uhost, -length $chost;
		381	} elsif ($chost =~ /\./) {
		382	next unless $chost eq $uhost;
		383	} else {
		384	next;
		385	}
		386
		387	while (my ($cpath, $cookies) = each %$paths) {
		388	next unless $cpath eq substr $upath, 0, length $cpath;
		389
		390	while (my ($cookie, $kv) = each %$cookies) {
		391	next if $uscheme ne "https" && exists $kv->{secure};
		392
		393	if (exists $kv->{expires}) {
		394	if (AE::now > parse_date ($kv->{expires})) {
		395	delete $cookies->{$cookie};
		396	next;
		397	}
		398	}
		399
		400	my $value = $kv->{value};
		401
		402	if ($value =~ /[=;,[:space:]]/) {
		403	$value =~ s/([\\"])/\\$1/g;
		404	$value = "\"$value\"";
		405	}
		406
		407	push @cookies, "$cookie=$value";
		408	}
		409	}
		410	}
		411
		412	\@cookies
		413	}
		414
		415	# continue to parse $_ for headers and place them into the arg
		416	sub parse_hdr() {
		417	my %hdr;
		418
		419	# things seen, not parsed:
		420	# p3pP="NON CUR OTPi OUR NOR UNI"
		421
		422	$hdr{lc $1} .= ",$2"
		423	while /\G
		424	([^:\000-\037]*):
		425	[\011\040]*
		426	((?: [^\012]+ \| \012[\011\040] )*)
		427	\012
		428	/gxc;
		429
		430	/\G$/
		431	or return;
		432
		433	# remove the "," prefix we added to all headers above
		434	substr $_, 0, 1, ""
		435	for values %hdr;
		436
		437	\%hdr
		438	}
		439
		440	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		441
		442	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		443	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		444
219	sub http_request($$@) {	445	sub http_request($$@) {
220	my $cb = pop;	446	my $cb = pop;
221	my ($method, $url, %arg) = @_;	447	my ($method, $url, %arg) = @_;
222		448
223	my %hdr;	449	my %hdr;
		450
		451	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		452	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
224		453
225	$method = uc $method;	454	$method = uc $method;
226		455
227	if (my $hdr = $arg{headers}) {	456	if (my $hdr = $arg{headers}) {
228	while (my ($k, $v) = each %$hdr) {	457	while (my ($k, $v) = each %$hdr) {
229	$hdr{lc $k} = $v;	458	$hdr{lc $k} = $v;
230	}	459	}
231	}	460	}
232		461
		462	# pseudo headers for all subsequent responses
		463	my @pseudo = (URL => $url);
		464	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		465
233	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	466	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
234		467
235	return $cb->(undef, { Status => 599, Reason => "recursion limit reached" })	468	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
236	if $recurse < 0;	469	if $recurse < 0;
237		470
238	my $proxy = $arg{proxy} \|\| $PROXY;	471	my $proxy = $arg{proxy} \|\| $PROXY;
239	my $timeout = $arg{timeout} \|\| $TIMEOUT;	472	my $timeout = $arg{timeout} \|\| $TIMEOUT;
240		473
241	$hdr{"user-agent"} \|\|= $USERAGENT;
242
243	my ($scheme, $authority, $upath, $query, $fragment) =	474	my ($uscheme, $uauthority, $upath, $query, $fragment) =
244	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	475	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
245		476
246	$scheme = lc $scheme;	477	$uscheme = lc $uscheme;
247		478
248	my $uport = $scheme eq "http" ? 80	479	my $uport = $uscheme eq "http" ? 80
249	: $scheme eq "https" ? 443	480	: $uscheme eq "https" ? 443
250	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" });	481	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
251		482
252	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
253
254	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	483	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
255	or return $cb->(undef, { Status => 599, Reason => "unparsable URL" });	484	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
256		485
257	my $uhost = $1;	486	my $uhost = $1;
258	$uport = $2 if defined $2;	487	$uport = $2 if defined $2;
259		488
		489	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		490	unless exists $hdr{host};
		491
260	$uhost =~ s/^\[(.*)\]$/$1/;	492	$uhost =~ s/^\[(.*)\]$/$1/;
261	$upath .= "?$query" if length $query;	493	$upath .= $query if length $query;
262		494
263	$upath =~ s%^/?%/%;	495	$upath =~ s%^/?%/%;
264		496
265	# cookie processing	497	# cookie processing
266	if (my $jar = $arg{cookie_jar}) {	498	if (my $jar = $arg{cookie_jar}) {
267	%$jar = () if $jar->{version} < 1;	499	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
268		500
269	my @cookie;
270
271	while (my ($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	501	$hdr{cookie} = join "; ", @$cookies
286	if @cookie;	502	if @$cookies;
287	}	503	}
288		504
289	my ($rhost, $rport, $rpath); # request host, port, path	505	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
290		506
291	if ($proxy) {	507	if ($proxy) {
292	($rhost, $rport, $scheme) = @$proxy;	508	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
293	$rpath = $url;	509
		510	$rscheme = "http" unless defined $rscheme;
		511
		512	# don't support https requests over https-proxy transport,
		513	# can't be done with tls as spec'ed, unless you double-encrypt.
		514	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
294	} else {	515	} else {
295	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	516	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
296	$hdr{host} = $uhost;
297	}	517	}
298		518
		519	# leave out fragment and query string, just a heuristic
		520	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		521	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		522
299	$hdr{"content-length"} = length $arg{body};	523	$hdr{"content-length"} = length $arg{body}
		524	if length $arg{body} \|\| $method ne "GET";
		525
		526	$hdr{connection} = "close TE"; #1.1
		527	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
300		528
301	my %state = (connect_guard => 1);	529	my %state = (connect_guard => 1);
302		530
303	_get_slot $uhost, sub {	531	_get_slot $uhost, sub {
304	$state{slot_guard} = shift;	532	$state{slot_guard} = shift;
305		533
306	return unless $state{connect_guard};	534	return unless $state{connect_guard};
307		535
308	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	536	my $connect_cb = sub {
309	$state{fh} = shift	537	$state{fh} = shift
		538	or do {
		539	my $err = "$!";
		540	%state = ();
310	or return $cb->(undef, { Status => 599, Reason => "$!" });	541	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		542	};
311		543
312	delete $state{connect_guard}; # reduce memory usage, save a tree	544	pop; # free memory, save a tree
		545
		546	return unless delete $state{connect_guard};
313		547
314	# get handle	548	# get handle
315	$state{handle} = new AnyEvent::Handle	549	$state{handle} = new AnyEvent::Handle
316	fh => $state{fh},	550	fh => $state{fh},
317	($scheme eq "https" ? (tls => "connect") : ());	551	peername => $rhost,
		552	tls_ctx => $arg{tls_ctx},
		553	# these need to be reconfigured on keepalive handles
		554	timeout => $timeout,
		555	on_error => sub {
		556	%state = ();
		557	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		558	},
		559	on_eof => sub {
		560	%state = ();
		561	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		562	},
		563	;
318		564
319	# limit the number of persistent connections	565	# limit the number of persistent connections
		566	# keepalive not yet supported
320	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	567	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
321	++$KA_COUNT{$_[1]};	568	# ++$KA_COUNT{$_[1]};
322	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	569	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		570	# --$KA_COUNT{$_[1]}
		571	# };
323	$hdr{connection} = "keep-alive";	572	# $hdr{connection} = "keep-alive";
324	delete $hdr{connection}; # keep-alive not yet supported
325	} else {
326	delete $hdr{connection};
327	}	573	# }
328		574
329	# (re-)configure handle	575	$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		576
		577	# handle actual, non-tunneled, request
		578	my $handle_actual_request = sub {
		579	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		580
341	# send request	581	# send request
342	$state{handle}->push_write (	582	$state{handle}->push_write (
343	"$method $rpath HTTP/1.0\015\012"	583	"$method $rpath HTTP/1.1\015\012"
344	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	584	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
345	. "\015\012"	585	. "\015\012"
346	. (delete $arg{body})	586	. (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	);	587	);
361		588
362	# headers, could be optimized a bit	589	# return if error occured during push_write()
363	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	590	return unless %state;
		591
		592	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
		593
		594	# status line and headers
		595	$state{read_response} = sub {
364	for ("$_[1]\012") {	596	for ("$_[1]") {
365	# we support spaces in field names, as lotus domino	597	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		598
		599	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
		600	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
		601
		602	# 100 Continue handling
		603	# should not happen as we don't send expect: 100-continue,
		604	# but we handle it just in case.
		605	# since we send the request body regardless, if we get an error
		606	# we are out of-sync, which we currently do NOT handle correctly.
		607	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		608	if $2 eq 100;
		609
		610	push @pseudo,
		611	HTTPVersion => $1,
		612	Status => $2,
		613	Reason => $3,
375	/\G$/	614	;
		615
		616	my $hdr = parse_hdr
376	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" }));	617	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		618
		619	%hdr = (%$hdr, @pseudo);
377	}	620	}
378		621
379	substr $_, 0, 1, ""	622	# redirect handling
380	for values %hdr;	623	# microsoft and other shitheads don't give a shit for following standards,
		624	# try to support some common forms of broken Location headers.
		625	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		626	$hdr{location} =~ s/^\.\/+//;
381		627
382	my $finish = sub {	628	my $url = "$rscheme://$uhost:$uport";
		629
		630	unless ($hdr{location} =~ s/^\///) {
		631	$url .= $upath;
		632	$url =~ s/\/[^\/]*$//;
		633	}
		634
		635	$hdr{location} = "$url/$hdr{location}";
		636	}
		637
		638	my $redirect;
		639
		640	if ($recurse) {
		641	my $status = $hdr{Status};
		642
		643	# industry standard is to redirect POST as GET for
		644	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		645	# also, the UA should ask the user for 301 and 307 and POST,
		646	# industry standard seems to be to simply follow.
		647	# we go with the industry standard.
		648	if ($status == 301 or $status == 302 or $status == 303) {
		649	# HTTP/1.1 is unclear on how to mutate the method
		650	$method = "GET" unless $method eq "HEAD";
		651	$redirect = 1;
		652	} elsif ($status == 307) {
		653	$redirect = 1;
		654	}
		655	}
		656
		657	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		658	my $keepalive = pop;
		659
		660	$state{handle}->destroy if $state{handle};
383	%state = ();	661	%state = ();
384		662
		663	if (defined $_[1]) {
		664	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		665	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		666	}
		667
385	# set-cookie processing	668	# set-cookie processing
386	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {	669	if ($arg{cookie_jar}) {
387	for (split /\x00/, $hdr{"set-cookie"}) {	670	for ($hdr{"set-cookie"}) {
388	my ($cookie, @arg) = split /;\s*/;	671	# parse NAME=VALUE
389	my ($name, $value) = split /=/, $cookie, 2;	672	my @kv;
390	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);	673
		674	while (
		675	m{
		676	\G\s*
		677	(?:
		678	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
		679	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		680	)
		681	}gcxsi
		682	) {
		683	my $name = $2;
		684	my $value = $4;
		685
		686	unless (defined $name) {
		687	# expires
		688	$name = "expires";
		689	$value = $1;
		690	} elsif (!defined $value) {
		691	# quoted
		692	$value = $3;
		693	$value =~ s/\\(.)/$1/gs;
		694	}
		695
		696	push @kv, lc $name, $value;
		697
		698	last unless /\G\s*;/gc;
		699	}
		700
		701	last unless @kv;
		702
		703	my $name = shift @kv;
		704	my %kv = (value => shift @kv, @kv);
		705
		706	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		707	if exists $kv{"max-age"};
		708
		709	my $cdom;
		710	my $cpath = (delete $kv{path}) \|\| "/";
		711
		712	if (exists $kv{domain}) {
		713	$cdom = delete $kv{domain};
391		714
392	my $cdom = (delete $kv{domain}) \|\| $uhost;
393	my $cpath = (delete $kv{path}) \|\| "/";
394
395	$cdom =~ s/^.?/./; # make sure it starts with a "."	715	$cdom =~ s/^\.?/./; # make sure it starts with a "."
396		716
397	next if $cdom =~ /\.$/;	717	next if $cdom =~ /\.$/;
398		718
399	# this is not rfc-like and not netscape-like. go figure.	719	# this is not rfc-like and not netscape-like. go figure.
400	my $ndots = $cdom =~ y/.//;	720	my $ndots = $cdom =~ y/.//;
401	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	721	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		722	} else {
		723	$cdom = $uhost;
		724	}
402		725
403	# store it	726	# store it
404	$arg{cookie_jar}{version} = 1;	727	$arg{cookie_jar}{version} = 1;
405	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	728	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		729
		730	redo if /\G\s*,/gc;
406	}	731	}
407	}	732	}
408		733
409	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	734	if ($redirect && exists $hdr{location}) {
410	# microsoft and other assholes don't give a shit for following standards,	735	# we ignore any errors, as it is very common to receive
411	# try to support a common form of broken Location header.	736	# Content-Length != 0 but no actual body
412	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;	737	# we also access %hdr, as $_[1] might be an erro
413		738	http_request (
414	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	739	$method => $hdr{location},
		740	%arg,
		741	recurse => $recurse - 1,
		742	Redirect => [$_[0], \%hdr],
		743	$cb);
415	} else {	744	} else {
416	$cb->($_[0], $_[1]);	745	$cb->($_[0], \%hdr);
417	}	746	}
418	};	747	};
419		748
420	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	749	my $len = $hdr{"content-length"};
		750
		751	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		752	$finish->(undef, 598 => "Request cancelled by on_header");
		753	} elsif (
		754	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		755	or $method eq "HEAD"
		756	or (defined $len && !$len)
		757	) {
		758	# no body
421	$finish->(undef, \%hdr);	759	$finish->("", undef, undef, 1);
422	} else {	760	} else {
423	if (exists $hdr{"content-length"}) {	761	# body handling, many different code paths
		762	# - no body expected
		763	# - want_body_handle
		764	# - te chunked
		765	# - 2x length known (with or without on_body)
		766	# - 2x length not known (with or without on_body)
		767	if (!$redirect && $arg{want_body_handle}) {
		768	$_[0]->on_eof (undef);
		769	$_[0]->on_error (undef);
		770	$_[0]->on_read (undef);
		771
		772	$finish->(delete $state{handle});
		773
		774	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		775	my $cl = 0;
		776	my $body = undef;
		777	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		778
		779	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		780
		781	my $read_chunk; $read_chunk = sub {
		782	$_[1] =~ /^([0-9a-fA-F]+)/
		783	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		784
		785	my $len = hex $1;
		786
		787	if ($len) {
		788	$cl += $len;
		789
424	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	790	$_[0]->push_read (chunk => $len, sub {
425	# could cache persistent connection now	791	$on_body->($_[1], \%hdr)
426	if ($hdr{connection} =~ /\bkeep-alive\b/i) {	792	or return $finish->(undef, 598 => "Request cancelled by on_body");
427	# but we don't, due to misdesigns, this is annoyingly complex	793
		794	$_[0]->push_read (line => sub {
		795	length $_[1]
		796	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		797	$_[0]->push_read (line => $read_chunk);
		798	});
		799	});
		800	} else {
		801	$hdr{"content-length"} \|\|= $cl;
		802
		803	$_[0]->push_read (line => $qr_nlnl, sub {
		804	if (length $_[1]) {
		805	for ("$_[1]") {
		806	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		807
		808	my $hdr = parse_hdr
		809	or return $finish->(undef, 599 => "Garbled response trailers");
		810
		811	%hdr = (%hdr, %$hdr);
		812	}
		813	}
		814
		815	$finish->($body, undef, undef, 1);
		816	});
		817	}
		818	};
		819
		820	$_[0]->push_read (line => $read_chunk);
		821
		822	} elsif ($arg{on_body}) {
		823	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		824
		825	if ($len) {
		826	$_[0]->on_read (sub {
		827	$len -= length $_[0]{rbuf};
		828
		829	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		830	or return $finish->(undef, 598 => "Request cancelled by on_body");
		831
		832	$len > 0
		833	or $finish->("", undef, undef, 1);
428	};	834	});
429		835	} else {
		836	$_[0]->on_eof (sub {
430	$finish->($_[1], \%hdr);	837	$finish->("");
		838	});
		839	$_[0]->on_read (sub {
		840	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		841	or $finish->(undef, 598 => "Request cancelled by on_body");
		842	});
431	});	843	}
432	} else {	844	} 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);	845	$_[0]->on_eof (undef);
		846
		847	if ($len) {
		848	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		849	$_[0]->on_read (sub {
		850	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		851	if $len <= length $_[0]{rbuf};
		852	});
		853	} else {
		854	$_[0]->on_error (sub {
		855	($! == Errno::EPIPE \|\| !$!)
		856	? $finish->(delete $_[0]{rbuf})
		857	: $finish->(undef, 599 => $_[2]);
		858	});
439	$_[0]->on_read (sub { });	859	$_[0]->on_read (sub { });
		860	}
440	}	861	}
441	}	862	}
		863	};
		864
		865	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		866	};
		867
		868	# now handle proxy-CONNECT method
		869	if ($proxy && $uscheme eq "https") {
		870	# oh dear, we have to wrap it into a connect request
		871
		872	# maybe re-use $uauthority with patched port?
		873	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		874	$state{handle}->push_read (line => $qr_nlnl, sub {
		875	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		876	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
		877
		878	if ($2 == 200) {
		879	$rpath = $upath;
		880	&$handle_actual_request;
		881	} else {
		882	%state = ();
		883	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
		884	}
442	});	885	});
		886	} else {
		887	&$handle_actual_request;
443	});	888	}
444	}, sub {
445	$timeout
446	};	889	};
		890
		891	my $tcp_connect = $arg{tcp_connect}
		892	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		893
		894	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		895
447	};	896	};
448		897
449	defined wantarray && AnyEvent::Util::guard { %state = () }	898	defined wantarray && AnyEvent::Util::guard { %state = () }
450	}	899	}
451		900
…		…
458	unshift @_, "HEAD";	907	unshift @_, "HEAD";
459	&http_request	908	&http_request
460	}	909	}
461		910
462	sub http_post($$@) {	911	sub http_post($$@) {
		912	my $url = shift;
463	unshift @_, "POST", "body";	913	unshift @_, "POST", $url, "body";
464	&http_request	914	&http_request
465	}	915	}
466		916
467	=back	917	=back
468		918
		919	=head2 DNS CACHING
		920
		921	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		922	the actual connection, which in turn uses AnyEvent::DNS to resolve
		923	hostnames. The latter is a simple stub resolver and does no caching
		924	on its own. If you want DNS caching, you currently have to provide
		925	your own default resolver (by storing a suitable resolver object in
		926	C<$AnyEvent::DNS::RESOLVER>).
		927
469	=head2 GLOBAL FUNCTIONS AND VARIABLES	928	=head2 GLOBAL FUNCTIONS AND VARIABLES
470		929
471	=over 4	930	=over 4
472		931
473	=item AnyEvent::HTTP::set_proxy "proxy-url"	932	=item AnyEvent::HTTP::set_proxy "proxy-url"
474		933
475	Sets the default proxy server to use. The proxy-url must begin with a	934	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:...>).	935	string of the form C<http://host:port> (optionally C<https:...>), croaks
		936	otherwise.
		937
		938	To clear an already-set proxy, use C<undef>.
		939
		940	=item $date = AnyEvent::HTTP::format_date $timestamp
		941
		942	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		943	Date (RFC 2616).
		944
		945	=item $timestamp = AnyEvent::HTTP::parse_date $date
		946
		947	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
		948	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		949	be parsed.
477		950
478	=item $AnyEvent::HTTP::MAX_RECURSE	951	=item $AnyEvent::HTTP::MAX_RECURSE
479		952
480	The default value for the C<recurse> request parameter (default: C<10>).	953	The default value for the C<recurse> request parameter (default: C<10>).
481		954
482	=item $AnyEvent::HTTP::USERAGENT	955	=item $AnyEvent::HTTP::USERAGENT
483		956
484	The default value for the C<User-Agent> header (the default is	957	The default value for the C<User-Agent> header (the default is
485	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	958	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
486		959
487	=item $AnyEvent::HTTP::MAX_PERSISTENT	960	=item $AnyEvent::HTTP::MAX_PER_HOST
488		961
489	The maximum number of persistent connections to keep open (default: 8).	962	The maximum number of concurrent connections to the same host (identified
		963	by the hostname). If the limit is exceeded, then the additional requests
		964	are queued until previous connections are closed.
490		965
491	Not implemented currently.	966	The default value for this is C<4>, and it is highly advisable to not
492		967	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		968
499	=item $AnyEvent::HTTP::ACTIVE	969	=item $AnyEvent::HTTP::ACTIVE
500		970
501	The number of active connections. This is not the number of currently	971	The number of active connections. This is not the number of currently
502	running requests, but the number of currently open and non-idle TCP	972	running requests, but the number of currently open and non-idle TCP
…		…
504		974
505	=back	975	=back
506		976
507	=cut	977	=cut
508		978
		979	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		980	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		981
		982	sub format_date($) {
		983	my ($time) = @_;
		984
		985	# RFC 822/1123 format
		986	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		987
		988	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		989	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		990	$H, $M, $S;
		991	}
		992
		993	sub parse_date($) {
		994	my ($date) = @_;
		995
		996	my ($d, $m, $y, $H, $M, $S);
		997
		998	if ($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$/) {
		999	# RFC 822/1123, required by RFC 2616 (with " ")
		1000	# cookie dates (with "-")
		1001
		1002	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1003
		1004	} elsif ($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$/) {
		1005	# RFC 850
		1006	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1007
		1008	} elsif ($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])$/) {
		1009	# ISO C's asctime
		1010	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1011	}
		1012	# other formats fail in the loop below
		1013
		1014	for (0..11) {
		1015	if ($m eq $month[$_]) {
		1016	require Time::Local;
		1017	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1018	}
		1019	}
		1020
		1021	undef
		1022	}
		1023
509	sub set_proxy($) {	1024	sub set_proxy($) {
		1025	if (length $_[0]) {
510	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1026	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1027	or Carp::croak "$_[0]: invalid proxy URL";
		1028	$PROXY = [$2, $3 \|\| 3128, $1]
		1029	} else {
		1030	undef $PROXY;
		1031	}
511	}	1032	}
512		1033
513	# initialise proxy from environment	1034	# initialise proxy from environment
		1035	eval {
514	set_proxy $ENV{http_proxy};	1036	set_proxy $ENV{http_proxy};
		1037	};
		1038
		1039	=head2 SOCKS PROXIES
		1040
		1041	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1042	compile your perl to support socks, or use an external program such as
		1043	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1044	transparently.
		1045
		1046	Alternatively, for AnyEvent::HTTP only, you can use your own
		1047	C<tcp_connect> function that does the proxy handshake - here is an example
		1048	that works with socks4a proxies:
		1049
		1050	use Errno;
		1051	use AnyEvent::Util;
		1052	use AnyEvent::Socket;
		1053	use AnyEvent::Handle;
		1054
		1055	# host, port and username of/for your socks4a proxy
		1056	my $socks_host = "10.0.0.23";
		1057	my $socks_port = 9050;
		1058	my $socks_user = "";
		1059
		1060	sub socks4a_connect {
		1061	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1062
		1063	my $hdl = new AnyEvent::Handle
		1064	connect => [$socks_host, $socks_port],
		1065	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1066	on_error => sub { $connect_cb->() },
		1067	;
		1068
		1069	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1070
		1071	$hdl->push_read (chunk => 8, sub {
		1072	my ($hdl, $chunk) = @_;
		1073	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1074
		1075	if ($status == 0x5a) {
		1076	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1077	} else {
		1078	$! = Errno::ENXIO; $connect_cb->();
		1079	}
		1080	});
		1081
		1082	$hdl
		1083	}
		1084
		1085	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1086	possibly after switching off other proxy types:
		1087
		1088	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1089
		1090	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1091	my ($data, $headers) = @_;
		1092	...
		1093	};
515		1094
516	=head1 SEE ALSO	1095	=head1 SEE ALSO
517		1096
518	L<AnyEvent>.	1097	L<AnyEvent>.
519		1098
520	=head1 AUTHOR	1099	=head1 AUTHOR
521		1100
522	Marc Lehmann <schmorp@schmorp.de>	1101	Marc Lehmann <schmorp@schmorp.de>
523	http://home.schmorp.de/	1102	http://home.schmorp.de/
		1103
		1104	With many thanks to Дмитрий Шалашов, who provided countless
		1105	testcases and bugreports.
524		1106
525	=cut	1107	=cut
526		1108
527	1	1109	1
528		1110

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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 1.71 by root, Fri Dec 31 20:50:58 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 1.71 by root, Fri Dec 31 20:50:58 2010 UTC