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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.38 by root, Sat Mar 7 03:43:09 2009 UTC vs.
Revision 1.72 by root, Fri Dec 31 20:59:19 2010 UTC

…		…
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Carp;	44	use Errno ();
45		45
46	use AnyEvent ();	46	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Socket ();
49	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
50		49
51	use base Exporter::;	50	use base Exporter::;
52		51
53	our $VERSION = '1.11';	52	our $VERSION = '1.5';
54		53
55	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
56		55
57	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)";
58	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
59	our $MAX_PERSISTENT = 8;	58	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	59	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	60	our $TIMEOUT = 300;
62		61
63	# changing these is evil	62	# changing these is evil
64	our $MAX_PERSISTENT_PER_HOST = 2;	63	our $MAX_PERSISTENT_PER_HOST = 0;
65	our $MAX_PER_HOST = 4;	64	our $MAX_PER_HOST = 4;
66		65
67	our $PROXY;	66	our $PROXY;
68	our $ACTIVE = 0;	67	our $ACTIVE = 0;
69		68
…		…
92	must be an absolute http or https URL.	91	must be an absolute http or https URL.
93		92
94	When called in void context, nothing is returned. In other contexts,	93	When called in void context, nothing is returned. In other contexts,
95	C<http_request> returns a "cancellation guard" - you have to keep the	94	C<http_request> returns a "cancellation guard" - you have to keep the
96	object at least alive until the callback get called. If the object gets	95	object at least alive until the callback get called. If the object gets
97	destroyed before the callbakc is called, the request will be cancelled.	96	destroyed before the callback is called, the request will be cancelled.
98		97
99	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
100	(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
101	response headers as second argument.	100	(and trailers) as second argument.
102		101
103	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
104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	contain the three parts of the HTTP Status-Line of the same name. 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
106	pseudo-header C<URL> contains the original URL (which can differ from the	110	The pseudo-header C<URL> contains the actual URL (which can differ from
107	requested URL when following redirects).	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	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
108		122
109	If the server sends a header multiple times, then their contents will be	123	If the server sends a header multiple times, then their contents will be
110	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
111		125
112	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
114	and the C<Reason> pseudo-header will contain an error message.	128	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		129	message.
115		130
116	A typical callback might look like this:	131	A typical callback might look like this:
117		132
118	sub {	133	sub {
119	my ($body, $hdr) = @_;	134	my ($body, $hdr) = @_;
…		…
135	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
136	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
137		152
138	=item headers => hashref	153	=item headers => hashref
139		154
140	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
141	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
142	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).
143		160
144	=item timeout => $seconds	161	=item timeout => $seconds
145		162
146	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
147	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
148		168
149	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
150		170
151	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
152	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
153		173
154	C<$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
155	HTTPS.	175	HTTPS.
156		176
157	=item body => $string	177	=item body => $string
158		178
159	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
160	this module might offer more options).	180	this module might offer more options).
161		181
162	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
163		183
164	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
165	based on the original netscape specification.	185	based on the original netscape specification.
166		186
167	The C<$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
168	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
169	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
170	recommended, as expire times are currently being ignored.	190	recommended, as session-only cookies might survive longer than expected.
171		191
172	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
173	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
174	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
175	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
176	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.
177		303
178	=back	304	=back
179		305
180	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.
181		308
182	http_request GET => "http://www.nethype.de/", sub {	309	http_request GET => "http://www.nethype.de/", sub {
183	my ($body, $hdr) = @_;	310	my ($body, $hdr) = @_;
184	print "$body\n";	311	print "$body\n";
185	};	312	};
186		313
187	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
188	timeout of 30 seconds.	315	timeout of 30 seconds.
189		316
190	http_request	317	http_request
191	GET => "https://www.google.com",	318	GET => "https://www.google.com",
192	timeout => 30,	319	timeout => 30,
…		…
195	use Data::Dumper;	322	use Data::Dumper;
196	print Dumper $hdr;	323	print Dumper $hdr;
197	}	324	}
198	;	325	;
199		326
200	Example: make another simple HTTP GET request, but immediately try to	327	Example: do another simple HTTP GET request, but immediately try to
201	cancel it.	328	cancel it.
202		329
203	my $request = http_request GET => "http://www.nethype.de/", sub {	330	my $request = http_request GET => "http://www.nethype.de/", sub {
204	my ($body, $hdr) = @_;	331	my ($body, $hdr) = @_;
205	print "$body\n";	332	print "$body\n";
…		…
237	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	364	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238		365
239	_slot_schedule $_[0];	366	_slot_schedule $_[0];
240	}	367	}
241		368
242	our $qr_nl = qr<\015?\012>;	369	# extract cookies from jar
243	our $qr_nlnl = qr<\015?\012\015?\012>;	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, $set_cookie) = @_;
		419
		420	for ($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	$arg{cookie_jar}{version} = 1;
		478	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		479
		480	redo if /\G\s*,/gc;
		481	}
		482	}
		483	}
		484
		485	# continue to parse $_ for headers and place them into the arg
		486	sub parse_hdr() {
		487	my %hdr;
		488
		489	# things seen, not parsed:
		490	# p3pP="NON CUR OTPi OUR NOR UNI"
		491
		492	$hdr{lc $1} .= ",$2"
		493	while /\G
		494	([^:\000-\037]*):
		495	[\011\040]*
		496	((?: [^\012]+ \| \012[\011\040] )*)
		497	\012
		498	/gxc;
		499
		500	/\G$/
		501	or return;
		502
		503	# remove the "," prefix we added to all headers above
		504	substr $_, 0, 1, ""
		505	for values %hdr;
		506
		507	\%hdr
		508	}
		509
		510	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		511
		512	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		513	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
244		514
245	sub http_request($$@) {	515	sub http_request($$@) {
246	my $cb = pop;	516	my $cb = pop;
247	my ($method, $url, %arg) = @_;	517	my ($method, $url, %arg) = @_;
248		518
249	my %hdr;	519	my %hdr;
		520
		521	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		522	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
250		523
251	$method = uc $method;	524	$method = uc $method;
252		525
253	if (my $hdr = $arg{headers}) {	526	if (my $hdr = $arg{headers}) {
254	while (my ($k, $v) = each %$hdr) {	527	while (my ($k, $v) = each %$hdr) {
255	$hdr{lc $k} = $v;	528	$hdr{lc $k} = $v;
256	}	529	}
257	}	530	}
258		531
		532	# pseudo headers for all subsequent responses
		533	my @pseudo = (URL => $url);
		534	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		535
259	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	536	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
260		537
261	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	538	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
262	if $recurse < 0;	539	if $recurse < 0;
263		540
264	my $proxy = $arg{proxy} \|\| $PROXY;	541	my $proxy = $arg{proxy} \|\| $PROXY;
265	my $timeout = $arg{timeout} \|\| $TIMEOUT;	542	my $timeout = $arg{timeout} \|\| $TIMEOUT;
266		543
267	$hdr{"user-agent"} \|\|= $USERAGENT;
268
269	my ($uscheme, $uauthority, $upath, $query, $fragment) =	544	my ($uscheme, $uauthority, $upath, $query, $fragment) =
270	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	545	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
271		546
272	$uscheme = lc $uscheme;	547	$uscheme = lc $uscheme;
273		548
274	my $uport = $uscheme eq "http" ? 80	549	my $uport = $uscheme eq "http" ? 80
275	: $uscheme eq "https" ? 443	550	: $uscheme eq "https" ? 443
276	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	551	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
277
278	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
279		552
280	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	553	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
281	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	554	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
282		555
283	my $uhost = $1;	556	my $uhost = $1;
284	$uport = $2 if defined $2;	557	$uport = $2 if defined $2;
285		558
		559	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		560	unless exists $hdr{host};
		561
286	$uhost =~ s/^\[(.*)\]$/$1/;	562	$uhost =~ s/^\[(.*)\]$/$1/;
287	$upath .= "?$query" if length $query;	563	$upath .= $query if length $query;
288		564
289	$upath =~ s%^/?%/%;	565	$upath =~ s%^/?%/%;
290		566
291	# cookie processing	567	# cookie processing
292	if (my $jar = $arg{cookie_jar}) {	568	if (my $jar = $arg{cookie_jar}) {
293	%$jar = () if $jar->{version} != 1;	569	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
294		570
295	my @cookie;
296
297	while (my ($chost, $v) = each %$jar) {
298	if ($chost =~ /^\./) {
299	next unless $chost eq substr $uhost, -length $chost;
300	} elsif ($chost =~ /\./) {
301	next unless $chost eq $uhost;
302	} else {
303	next;
304	}
305
306	while (my ($cpath, $v) = each %$v) {
307	next unless $cpath eq substr $upath, 0, length $cpath;
308
309	while (my ($k, $v) = each %$v) {
310	next if $uscheme ne "https" && exists $v->{secure};
311	my $value = $v->{value};
312	$value =~ s/([\\"])/\\$1/g;
313	push @cookie, "$k=\"$value\"";
314	}
315	}
316	}
317
318	$hdr{cookie} = join "; ", @cookie	571	$hdr{cookie} = join "; ", @$cookies
319	if @cookie;	572	if @$cookies;
320	}	573	}
321		574
322	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	575	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
323		576
324	if ($proxy) {	577	if ($proxy) {
325	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	578	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		579
		580	$rscheme = "http" unless defined $rscheme;
326		581
327	# don't support https requests over https-proxy transport,	582	# don't support https requests over https-proxy transport,
328	# can't be done with tls as spec'ed, unless you double-encrypt.	583	# can't be done with tls as spec'ed, unless you double-encrypt.
329	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	584	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
330	} else {	585	} else {
331	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	586	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
332	}	587	}
333		588
334	$hdr{host} = $uhost;	589	# leave out fragment and query string, just a heuristic
		590	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		591	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		592
335	$hdr{"content-length"} = length $arg{body};	593	$hdr{"content-length"} = length $arg{body}
		594	if length $arg{body} \|\| $method ne "GET";
		595
		596	$hdr{connection} = "close TE"; #1.1
		597	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
336		598
337	my %state = (connect_guard => 1);	599	my %state = (connect_guard => 1);
338		600
339	_get_slot $uhost, sub {	601	_get_slot $uhost, sub {
340	$state{slot_guard} = shift;	602	$state{slot_guard} = shift;
341		603
342	return unless $state{connect_guard};	604	return unless $state{connect_guard};
343		605
344	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	606	my $connect_cb = sub {
345	$state{fh} = shift	607	$state{fh} = shift
		608	or do {
		609	my $err = "$!";
		610	%state = ();
346	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	611	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		612	};
		613
347	pop; # free memory, save a tree	614	pop; # free memory, save a tree
348		615
349	return unless delete $state{connect_guard};	616	return unless delete $state{connect_guard};
350		617
351	# get handle	618	# get handle
352	$state{handle} = new AnyEvent::Handle	619	$state{handle} = new AnyEvent::Handle
353	fh => $state{fh},	620	fh => $state{fh},
		621	peername => $rhost,
		622	tls_ctx => $arg{tls_ctx},
		623	# these need to be reconfigured on keepalive handles
354	timeout => $timeout;	624	timeout => $timeout,
		625	on_error => sub {
		626	%state = ();
		627	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		628	},
		629	on_eof => sub {
		630	%state = ();
		631	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		632	},
		633	;
355		634
356	# limit the number of persistent connections	635	# limit the number of persistent connections
357	# keepalive not yet supported	636	# keepalive not yet supported
358	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	637	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
359	++$KA_COUNT{$_[1]};	638	# ++$KA_COUNT{$_[1]};
360	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	639	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
361	--$KA_COUNT{$_[1]}	640	# --$KA_COUNT{$_[1]}
362	};	641	# };
363	$hdr{connection} = "keep-alive";	642	# $hdr{connection} = "keep-alive";
364	} else {
365	delete $hdr{connection};
366	}	643	# }
367
368	# (re-)configure handle
369	$state{handle}->on_error (sub {
370	my $errno = "$!";
371	%state = ();
372	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });
373	});
374	$state{handle}->on_eof (sub {
375	%state = ();
376	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
377	});
378		644
379	$state{handle}->starttls ("connect") if $rscheme eq "https";	645	$state{handle}->starttls ("connect") if $rscheme eq "https";
380		646
381	# handle actual, non-tunneled, request	647	# handle actual, non-tunneled, request
382	my $handle_actual_request = sub {	648	my $handle_actual_request = sub {
383	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	649	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
384		650
385	# send request	651	# send request
386	$state{handle}->push_write (	652	$state{handle}->push_write (
387	"$method $rpath HTTP/1.0\015\012"	653	"$method $rpath HTTP/1.1\015\012"
388	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	654	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
389	. "\015\012"	655	. "\015\012"
390	. (delete $arg{body})	656	. (delete $arg{body})
391	);	657	);
392		658
		659	# return if error occured during push_write()
		660	return unless %state;
		661
393	%hdr = (); # reduce memory usage, save a kitten	662	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
394		663
395	# status line	664	# status line and headers
396	$state{handle}->push_read (line => $qr_nl, sub {	665	$state{read_response} = sub {
397	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
398	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
399
400	my %hdr = ( # response headers
401	HTTPVersion => ",$1",
402	Status => ",$2",
403	Reason => ",$3",
404	URL => ",$url"
405	);
406
407	# headers, could be optimized a bit
408	$state{handle}->unshift_read (line => $qr_nlnl, sub {
409	for ("$_[1]\012") {	666	for ("$_[1]") {
410	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	667	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411		668
412	# we support spaces in field names, as lotus domino	669	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
413	# creates them (actually spaces around seperators	670	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
414	# are strictly allowed in http, they are a security issue).
415	$hdr{lc $1} .= ",$2"
416	while /\G
417	([^:\000-\037]+):
418	[\011\040]*
419	((?: [^\012]+ \| \012[\011\040] )*)
420	\012
421	/gxc;
422		671
		672	# 100 Continue handling
		673	# should not happen as we don't send expect: 100-continue,
		674	# but we handle it just in case.
		675	# since we send the request body regardless, if we get an error
		676	# we are out of-sync, which we currently do NOT handle correctly.
		677	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		678	if $2 eq 100;
		679
		680	push @pseudo,
		681	HTTPVersion => $1,
		682	Status => $2,
		683	Reason => $3,
423	/\G$/	684	;
		685
		686	my $hdr = parse_hdr
424	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	687	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		688
		689	%hdr = (%$hdr, @pseudo);
		690	}
		691
		692	# redirect handling
		693	# microsoft and other shitheads don't give a shit for following standards,
		694	# try to support some common forms of broken Location headers.
		695	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		696	$hdr{location} =~ s/^\.\/+//;
		697
		698	my $url = "$rscheme://$uhost:$uport";
		699
		700	unless ($hdr{location} =~ s/^\///) {
		701	$url .= $upath;
		702	$url =~ s/\/[^\/]*$//;
425	}	703	}
426		704
427	substr $_, 0, 1, ""	705	$hdr{location} = "$url/$hdr{location}";
428	for values %hdr;	706	}
429		707
430	my $finish = sub {	708	my $redirect;
		709
		710	if ($recurse) {
		711	my $status = $hdr{Status};
		712
		713	# industry standard is to redirect POST as GET for
		714	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		715	# also, the UA should ask the user for 301 and 307 and POST,
		716	# industry standard seems to be to simply follow.
		717	# we go with the industry standard.
		718	if ($status == 301 or $status == 302 or $status == 303) {
		719	# HTTP/1.1 is unclear on how to mutate the method
		720	$method = "GET" unless $method eq "HEAD";
		721	$redirect = 1;
		722	} elsif ($status == 307) {
		723	$redirect = 1;
		724	}
		725	}
		726
		727	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		728	my $keepalive = pop;
		729
431	$state{handle}->destroy;	730	$state{handle}->destroy if $state{handle};
432	%state = ();	731	%state = ();
433		732
		733	if (defined $_[1]) {
		734	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		735	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		736	}
		737
434	# set-cookie processing	738	# set-cookie processing
435	if ($arg{cookie_jar}) {	739	if ($arg{cookie_jar}) {
436	for ($hdr{"set-cookie"}) {	740	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"};
437	# parse NAME=VALUE	741
		742	if ($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	$finish->("", undef, undef, 1);
		768	} else {
		769	# body handling, many different code paths
		770	# - no body expected
		771	# - want_body_handle
		772	# - te chunked
		773	# - 2x length known (with or without on_body)
		774	# - 2x length not known (with or without on_body)
		775	if (!$redirect && $arg{want_body_handle}) {
		776	$_[0]->on_eof (undef);
		777	$_[0]->on_error (undef);
		778	$_[0]->on_read (undef);
		779
		780	$finish->(delete $state{handle});
		781
		782	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		783	my $cl = 0;
		784	my $body = undef;
		785	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		786
		787	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		788
		789	my $read_chunk; $read_chunk = sub {
		790	$_[1] =~ /^([0-9a-fA-F]+)/
		791	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		792
		793	my $len = hex $1;
		794
		795	if ($len) {
		796	$cl += $len;
		797
		798	$_[0]->push_read (chunk => $len, sub {
		799	$on_body->($_[1], \%hdr)
		800	or return $finish->(undef, 598 => "Request cancelled by on_body");
		801
		802	$_[0]->push_read (line => sub {
		803	length $_[1]
		804	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		805	$_[0]->push_read (line => $read_chunk);
		806	});
438	my @kv;	807	});
		808	} else {
		809	$hdr{"content-length"} \|\|= $cl;
439		810
440	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {	811	$_[0]->push_read (line => $qr_nlnl, sub {
441	my $name = $1;	812	if (length $_[1]) {
442	my $value = $3;
443
444	unless ($value) {	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);
445	$value = $2;	820	}
446	$value =~ s/\\(.)/$1/gs;
447	}	821	}
448		822
449	push @kv, $name => $value;	823	$finish->($body, undef, undef, 1);
450
451	last unless /\G\s*;/gc;
452	}	824	});
453
454	last unless @kv;
455
456	my $name = shift @kv;
457	my %kv = (value => shift @kv, @kv);
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	$arg{cookie_jar}{version} = 1;
478	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
479
480	redo if /\G\s*,/gc;
481	}	825	}
482	}	826	};
483		827
484	# microsoft and other shitheads don't give a shit for following standards,	828	$_[0]->push_read (line => $read_chunk);
485	# try to support some common forms of broken Location headers.
486	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
487	$_[1]{location} =~ s/^\.\/+//;
488		829
489	my $url = "$rscheme://$uhost:$uport";	830	} elsif ($arg{on_body}) {
		831	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
490		832
491	unless ($_[1]{location} =~ s/^\///) {
492	$url .= $upath;
493	$url =~ s/\/[^\/]*$//;
494	}
495
496	$_[1]{location} = "$url/$_[1]{location}";
497	}
498
499	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
500	# apparently, mozilla et al. just change POST to GET here
501	# more research is needed before we do the same
502	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
503	} elsif ($_[1]{Status} == 303 && $recurse) {
504	# even http/1.1 is unclear on how to mutate the method
505	$method = "GET" unless $method eq "HEAD";
506	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
507	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
508	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
509	} else {	833	if ($len) {
510	$cb->($_[0], $_[1]);	834	$_[0]->on_read (sub {
511	}	835	$len -= length $_[0]{rbuf};
512	};
513		836
514	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	837	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
515	$finish->(undef, \%hdr);	838	or return $finish->(undef, 598 => "Request cancelled by on_body");
516	} else {	839
517	if (exists $hdr{"content-length"}) {
518	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
519	# could cache persistent connection now
520	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
521	# but we don't, due to misdesigns, this is annoyingly complex
522	};	840	$len > 0
523		841	or $finish->("", undef, undef, 1);
524	$finish->($_[1], \%hdr);
525	});	842	});
526	} else {	843	} else {
527	# too bad, need to read until we get an error or EOF,	844	$_[0]->on_eof (sub {
528	# no way to detect winged data.	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 {
529	$_[0]->on_error (sub {	862	$_[0]->on_error (sub {
530	# delete ought to be more efficient, as we would have to make	863	($! == Errno::EPIPE \|\| !$!)
531	# a copy otherwise as $_[0] gets destroyed.
532	$finish->(delete $_[0]{rbuf}, \%hdr);	864	? $finish->(delete $_[0]{rbuf})
		865	: $finish->(undef, 599 => $_[2]);
533	});	866	});
534	$_[0]->on_eof (undef);
535	$_[0]->on_read (sub { });	867	$_[0]->on_read (sub { });
536	}	868	}
537	}	869	}
538	});	870	}
539	});	871	};
		872
		873	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
540	};	874	};
541		875
542	# now handle proxy-CONNECT method	876	# now handle proxy-CONNECT method
543	if ($proxy && $uscheme eq "https") {	877	if ($proxy && $uscheme eq "https") {
544	# oh dear, we have to wrap it into a connect request	878	# oh dear, we have to wrap it into a connect request
545		879
546	# maybe re-use $uauthority with patched port?	880	# maybe re-use $uauthority with patched port?
547	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	881	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
548	$state{handle}->push_read (line => $qr_nlnl, sub {	882	$state{handle}->push_read (line => $qr_nlnl, sub {
549	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	883	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
550	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));	884	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
551		885
552	if ($2 == 200) {	886	if ($2 == 200) {
553	$rpath = $upath;	887	$rpath = $upath;
554	&$handle_actual_request;	888	&$handle_actual_request;
555	} else {	889	} else {
556	%state = ();	890	%state = ();
557	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	891	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
558	}	892	}
559	});	893	});
560	} else {	894	} else {
561	&$handle_actual_request;	895	&$handle_actual_request;
562	}	896	}
563
564	}, sub {
565	$timeout
566	};	897	};
		898
		899	my $tcp_connect = $arg{tcp_connect}
		900	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		901
		902	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		903
567	};	904	};
568		905
569	defined wantarray && AnyEvent::Util::guard { %state = () }	906	defined wantarray && AnyEvent::Util::guard { %state = () }
570	}	907	}
571		908
…		…
585	&http_request	922	&http_request
586	}	923	}
587		924
588	=back	925	=back
589		926
		927	=head2 DNS CACHING
		928
		929	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		930	the actual connection, which in turn uses AnyEvent::DNS to resolve
		931	hostnames. The latter is a simple stub resolver and does no caching
		932	on its own. If you want DNS caching, you currently have to provide
		933	your own default resolver (by storing a suitable resolver object in
		934	C<$AnyEvent::DNS::RESOLVER>).
		935
590	=head2 GLOBAL FUNCTIONS AND VARIABLES	936	=head2 GLOBAL FUNCTIONS AND VARIABLES
591		937
592	=over 4	938	=over 4
593		939
594	=item AnyEvent::HTTP::set_proxy "proxy-url"	940	=item AnyEvent::HTTP::set_proxy "proxy-url"
595		941
596	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
597	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.
598		958
599	=item $AnyEvent::HTTP::MAX_RECURSE	959	=item $AnyEvent::HTTP::MAX_RECURSE
600		960
601	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>).
602		962
603	=item $AnyEvent::HTTP::USERAGENT	963	=item $AnyEvent::HTTP::USERAGENT
604		964
605	The default value for the C<User-Agent> header (the default is	965	The default value for the C<User-Agent> header (the default is
606	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	966	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
607		967
608	=item $AnyEvent::HTTP::MAX_PERSISTENT	968	=item $AnyEvent::HTTP::MAX_PER_HOST
609		969
610	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.
611		973
612	Not implemented currently.	974	The default value for this is C<4>, and it is highly advisable to not
613		975	increase it.
614	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
615
616	The maximum time to cache a persistent connection, in seconds (default: 2).
617
618	Not implemented currently.
619		976
620	=item $AnyEvent::HTTP::ACTIVE	977	=item $AnyEvent::HTTP::ACTIVE
621		978
622	The number of active connections. This is not the number of currently	979	The number of active connections. This is not the number of currently
623	running requests, but the number of currently open and non-idle TCP	980	running requests, but the number of currently open and non-idle TCP
…		…
625		982
626	=back	983	=back
627		984
628	=cut	985	=cut
629		986
		987	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		988	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		989
		990	sub format_date($) {
		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, $_, $y);
		1026	}
		1027	}
		1028
		1029	undef
		1030	}
		1031
630	sub set_proxy($) {	1032	sub set_proxy($) {
		1033	if (length $_[0]) {
631	$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	}
632	}	1040	}
633		1041
634	# initialise proxy from environment	1042	# initialise proxy from environment
		1043	eval {
635	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	};
636		1102
637	=head1 SEE ALSO	1103	=head1 SEE ALSO
638		1104
639	L<AnyEvent>.	1105	L<AnyEvent>.
640		1106

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.38 by root, Sat Mar 7 03:43:09 2009 UTC vs. Revision 1.72 by root, Fri Dec 31 20:59:19 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.38 by root, Sat Mar 7 03:43:09 2009 UTC vs.
Revision 1.72 by root, Fri Dec 31 20:59:19 2010 UTC