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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.34 by root, Wed Oct 29 14:51:07 2008 UTC vs.
Revision 1.79 by root, Sat Jan 1 20:01:07 2011 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 = '1.05';	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<< $headers->{Status} >> will be
114	and the C<Reason> pseudo-header will contain an error message.	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
		129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
115		144
116	A typical callback might look like this:	145	A typical callback might look like this:
117		146
118	sub {	147	sub {
119	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
135	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
136	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
137		166
138	=item headers => hashref	167	=item headers => hashref
139		168
140	The request headers to use. Currently, C<http_request> may provide its	169	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	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
142	and will provide defaults for C<User-Agent:> and C<Referer:>.	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		172	(this can be suppressed by using C<undef> for these headers in which case
		173	they won't be sent at all).
143		174
144	=item timeout => $seconds	175	=item timeout => $seconds
145		176
146	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
147	the timeout, as will read or write activity. Default timeout is 5 minutes.	178	the timeout, as will read or write activity, i.e. this is not an overall
		179	timeout.
		180
		181	Default timeout is 5 minutes.
148		182
149	=item proxy => [$host, $port[, $scheme]] or undef	183	=item proxy => [$host, $port[, $scheme]] or undef
150		184
151	Use the given http proxy for all requests. If not specified, then the	185	Use the given http proxy for all requests. If not specified, then the
152	default proxy (as specified by C<$ENV{http_proxy}>) is used.	186	default proxy (as specified by C<$ENV{http_proxy}>) is used.
153		187
154	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
155	HTTPS.	189	HTTPS.
156		190
157	=item body => $string	191	=item body => $string
158		192
159	The request body, usually empty. Will be-sent as-is (future versions of	193	The request body, usually empty. Will be sent as-is (future versions of
160	this module might offer more options).	194	this module might offer more options).
161		195
162	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
163		197
164	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
165	based on the original netscape specification.	199	based on the original netscape specification.
166		200
167	The C<$hash_ref> must be an (initially empty) hash reference which will	201	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	202	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	203	persistent storage with something like JSON or Storable, but this is not
170	recommended, as expire times are currently being ignored.	204	recommended, as session-only cookies might survive longer than expected.
171		205
172	Note that this cookie implementation is not of very high quality, nor	206	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	207	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	208	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	209	working. Cookies are a privacy disaster, do not use them unless required
176	them unless required to.	210	to.
		211
		212	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		213	headers will be set and handled by this module, otherwise they will be
		214	left untouched.
		215
		216	=item tls_ctx => $scheme \| $tls_ctx
		217
		218	Specifies the AnyEvent::TLS context to be used for https connections. This
		219	parameter follows the same rules as the C<tls_ctx> parameter to
		220	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		221	C<high> can be specified, which give you a predefined low-security (no
		222	verification, highest compatibility) and high-security (CA and common-name
		223	verification) TLS context.
		224
		225	The default for this option is C<low>, which could be interpreted as "give
		226	me the page, no matter what".
		227
		228	=item on_prepare => $callback->($fh)
		229
		230	In rare cases you need to "tune" the socket before it is used to
		231	connect (for exmaple, to bind it on a given IP address). This parameter
		232	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		233	and behaves exactly the same way (e.g. it has to provide a
		234	timeout). See the description for the C<$prepare_cb> argument of
		235	C<AnyEvent::Socket::tcp_connect> for details.
		236
		237	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		238
		239	In even rarer cases you want total control over how AnyEvent::HTTP
		240	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		241	to do this, but you can provide your own C<tcp_connect> function -
		242	obviously, it has to follow the same calling conventions, except that it
		243	may always return a connection guard object.
		244
		245	There are probably lots of weird uses for this function, starting from
		246	tracing the hosts C<http_request> actually tries to connect, to (inexact
		247	but fast) host => IP address caching or even socks protocol support.
		248
		249	=item on_header => $callback->($headers)
		250
		251	When specified, this callback will be called with the header hash as soon
		252	as headers have been successfully received from the remote server (not on
		253	locally-generated errors).
		254
		255	It has to return either true (in which case AnyEvent::HTTP will continue),
		256	or false, in which case AnyEvent::HTTP will cancel the download (and call
		257	the finish callback with an error code of C<598>).
		258
		259	This callback is useful, among other things, to quickly reject unwanted
		260	content, which, if it is supposed to be rare, can be faster than first
		261	doing a C<HEAD> request.
		262
		263	The downside is that cancelling the request makes it impossible to re-use
		264	the connection. Also, the C<on_header> callback will not receive any
		265	trailer (headers sent after the response body).
		266
		267	Example: cancel the request unless the content-type is "text/html".
		268
		269	on_header => sub {
		270	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		271	},
		272
		273	=item on_body => $callback->($partial_body, $headers)
		274
		275	When specified, all body data will be passed to this callback instead of
		276	to the completion callback. The completion callback will get the empty
		277	string instead of the body data.
		278
		279	It has to return either true (in which case AnyEvent::HTTP will continue),
		280	or false, in which case AnyEvent::HTTP will cancel the download (and call
		281	the completion callback with an error code of C<598>).
		282
		283	The downside to cancelling the request is that it makes it impossible to
		284	re-use the connection.
		285
		286	This callback is useful when the data is too large to be held in memory
		287	(so the callback writes it to a file) or when only some information should
		288	be extracted, or when the body should be processed incrementally.
		289
		290	It is usually preferred over doing your own body handling via
		291	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		292	only used to create a connection, C<want_body_handle> is the better
		293	alternative, as it allows you to install your own event handler, reducing
		294	resource usage.
		295
		296	=item want_body_handle => $enable
		297
		298	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		299	changes considerably: after parsing the headers, and instead of
		300	downloading the body (if any), the completion callback will be
		301	called. Instead of the C<$body> argument containing the body data, the
		302	callback will receive the L<AnyEvent::Handle> object associated with the
		303	connection. In error cases, C<undef> will be passed. When there is no body
		304	(e.g. status C<304>), the empty string will be passed.
		305
		306	The handle object might or might not be in TLS mode, might be connected to
		307	a proxy, be a persistent connection etc., and configured in unspecified
		308	ways. The user is responsible for this handle (it will not be used by this
		309	module anymore).
		310
		311	This is useful with some push-type services, where, after the initial
		312	headers, an interactive protocol is used (typical example would be the
		313	push-style twitter API which starts a JSON/XML stream).
		314
		315	If you think you need this, first have a look at C<on_body>, to see if
		316	that doesn't solve your problem in a better way.
177		317
178	=back	318	=back
179		319
180	Example: make a simple HTTP GET request for http://www.nethype.de/	320	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		321	the response body.
181		322
182	http_request GET => "http://www.nethype.de/", sub {	323	http_request GET => "http://www.nethype.de/", sub {
183	my ($body, $hdr) = @_;	324	my ($body, $hdr) = @_;
184	print "$body\n";	325	print "$body\n";
185	};	326	};
186		327
187	Example: make a HTTP HEAD request on https://www.google.com/, use a	328	Example: do a HTTP HEAD request on https://www.google.com/, use a
188	timeout of 30 seconds.	329	timeout of 30 seconds.
189		330
190	http_request	331	http_request
191	GET => "https://www.google.com",	332	GET => "https://www.google.com",
192	timeout => 30,	333	timeout => 30,
…		…
195	use Data::Dumper;	336	use Data::Dumper;
196	print Dumper $hdr;	337	print Dumper $hdr;
197	}	338	}
198	;	339	;
199		340
200	Example: make another simple HTTP GET request, but immediately try to	341	Example: do another simple HTTP GET request, but immediately try to
201	cancel it.	342	cancel it.
202		343
203	my $request = http_request GET => "http://www.nethype.de/", sub {	344	my $request = http_request GET => "http://www.nethype.de/", sub {
204	my ($body, $hdr) = @_;	345	my ($body, $hdr) = @_;
205	print "$body\n";	346	print "$body\n";
…		…
237	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	378	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238		379
239	_slot_schedule $_[0];	380	_slot_schedule $_[0];
240	}	381	}
241		382
242	our $qr_nl = qr<\015?\012>;	383	# extract cookies from jar
243	our $qr_nlnl = qr<\015?\012\015?\012>;	384	sub cookie_jar_extract($$$$) {
		385	my ($jar, $uscheme, $uhost, $upath) = @_;
		386
		387	%$jar = () if $jar->{version} != 1;
		388
		389	my @cookies;
		390
		391	while (my ($chost, $paths) = each %$jar) {
		392	next unless ref $paths;
		393
		394	if ($chost =~ /^\./) {
		395	next unless $chost eq substr $uhost, -length $chost;
		396	} elsif ($chost =~ /\./) {
		397	next unless $chost eq $uhost;
		398	} else {
		399	next;
		400	}
		401
		402	while (my ($cpath, $cookies) = each %$paths) {
		403	next unless $cpath eq substr $upath, 0, length $cpath;
		404
		405	while (my ($cookie, $kv) = each %$cookies) {
		406	next if $uscheme ne "https" && exists $kv->{secure};
		407
		408	if (exists $kv->{expires}) {
		409	if (AE::now > parse_date ($kv->{expires})) {
		410	delete $cookies->{$cookie};
		411	next;
		412	}
		413	}
		414
		415	my $value = $kv->{value};
		416
		417	if ($value =~ /[=;,[:space:]]/) {
		418	$value =~ s/([\\"])/\\$1/g;
		419	$value = "\"$value\"";
		420	}
		421
		422	push @cookies, "$cookie=$value";
		423	}
		424	}
		425	}
		426
		427	\@cookies
		428	}
		429
		430	# parse set_cookie header into jar
		431	sub cookie_jar_set_cookie($$$) {
		432	my ($jar, $set_cookie, $uhost) = @_;
		433
		434	for ($set_cookie) {
		435	# parse NAME=VALUE
		436	my @kv;
		437
		438	# expires is not http-compliant in the original cookie-spec,
		439	# we support the official date format and some extensions
		440	while (
		441	m{
		442	\G\s*
		443	(?:
		444	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		445	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		446	)
		447	}gcxsi
		448	) {
		449	my $name = $2;
		450	my $value = $4;
		451
		452	unless (defined $name) {
		453	# expires
		454	$name = "expires";
		455	$value = $1;
		456	} elsif (!defined $value) {
		457	# quoted
		458	$value = $3;
		459	$value =~ s/\\(.)/$1/gs;
		460	}
		461
		462	push @kv, lc $name, $value;
		463
		464	last unless /\G\s*;/gc;
		465	}
		466
		467	last unless @kv;
		468
		469	my $name = shift @kv;
		470	my %kv = (value => shift @kv, @kv);
		471
		472	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		473	if exists $kv{"max-age"};
		474
		475	my $cdom;
		476	my $cpath = (delete $kv{path}) \|\| "/";
		477
		478	if (exists $kv{domain}) {
		479	$cdom = delete $kv{domain};
		480
		481	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		482
		483	next if $cdom =~ /\.$/;
		484
		485	# this is not rfc-like and not netscape-like. go figure.
		486	my $ndots = $cdom =~ y/.//;
		487	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		488	} else {
		489	$cdom = $uhost;
		490	}
		491
		492	# store it
		493	$jar->{version} = 1;
		494	$jar->{$cdom}{$cpath}{$name} = \%kv;
		495
		496	redo if /\G\s*,/gc;
		497	}
		498	}
		499
		500	# continue to parse $_ for headers and place them into the arg
		501	sub parse_hdr() {
		502	my %hdr;
		503
		504	# things seen, not parsed:
		505	# p3pP="NON CUR OTPi OUR NOR UNI"
		506
		507	$hdr{lc $1} .= ",$2"
		508	while /\G
		509	([^:\000-\037]*):
		510	[\011\040]*
		511	((?: [^\012]+ \| \012[\011\040] )*)
		512	\012
		513	/gxc;
		514
		515	/\G$/
		516	or return;
		517
		518	# remove the "," prefix we added to all headers above
		519	substr $_, 0, 1, ""
		520	for values %hdr;
		521
		522	\%hdr
		523	}
		524
		525	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		526
		527	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		528	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
244		529
245	sub http_request($$@) {	530	sub http_request($$@) {
246	my $cb = pop;	531	my $cb = pop;
247	my ($method, $url, %arg) = @_;	532	my ($method, $url, %arg) = @_;
248		533
249	my %hdr;	534	my %hdr;
		535
		536	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		537	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
250		538
251	$method = uc $method;	539	$method = uc $method;
252		540
253	if (my $hdr = $arg{headers}) {	541	if (my $hdr = $arg{headers}) {
254	while (my ($k, $v) = each %$hdr) {	542	while (my ($k, $v) = each %$hdr) {
255	$hdr{lc $k} = $v;	543	$hdr{lc $k} = $v;
256	}	544	}
257	}	545	}
258		546
		547	# pseudo headers for all subsequent responses
		548	my @pseudo = (URL => $url);
		549	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		550
259	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	551	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
260		552
261	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	553	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
262	if $recurse < 0;	554	if $recurse < 0;
263		555
264	my $proxy = $arg{proxy} \|\| $PROXY;	556	my $proxy = $arg{proxy} \|\| $PROXY;
265	my $timeout = $arg{timeout} \|\| $TIMEOUT;	557	my $timeout = $arg{timeout} \|\| $TIMEOUT;
266		558
267	$hdr{"user-agent"} \|\|= $USERAGENT;
268
269	my ($uscheme, $uauthority, $upath, $query, $fragment) =	559	my ($uscheme, $uauthority, $upath, $query, $fragment) =
270	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	560	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
271		561
272	$uscheme = lc $uscheme;	562	$uscheme = lc $uscheme;
273		563
274	my $uport = $uscheme eq "http" ? 80	564	my $uport = $uscheme eq "http" ? 80
275	: $uscheme eq "https" ? 443	565	: $uscheme eq "https" ? 443
276	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	566	: 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		567
280	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	568	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
281	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	569	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
282		570
283	my $uhost = $1;	571	my $uhost = $1;
284	$uport = $2 if defined $2;	572	$uport = $2 if defined $2;
285		573
		574	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		575	unless exists $hdr{host};
		576
286	$uhost =~ s/^\[(.*)\]$/$1/;	577	$uhost =~ s/^\[(.*)\]$/$1/;
287	$upath .= "?$query" if length $query;	578	$upath .= $query if length $query;
288		579
289	$upath =~ s%^/?%/%;	580	$upath =~ s%^/?%/%;
290		581
291	# cookie processing	582	# cookie processing
292	if (my $jar = $arg{cookie_jar}) {	583	if (my $jar = $arg{cookie_jar}) {
293	%$jar = () if $jar->{version} != 1;	584	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
294		585
295	my @cookie;
296
297	while (my ($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	586	$hdr{cookie} = join "; ", @$cookies
319	if @cookie;	587	if @$cookies;
320	}	588	}
321		589
322	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	590	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
323		591
324	if ($proxy) {	592	if ($proxy) {
325	($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);	593	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		594
		595	$rscheme = "http" unless defined $rscheme;
326		596
327	# don't support https requests over https-proxy transport,	597	# don't support https requests over https-proxy transport,
328	# can't be done with tls as spec'ed.	598	# can't be done with tls as spec'ed, unless you double-encrypt.
329	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	599	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
330	} else {	600	} else {
331	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	601	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
332	}	602	}
333		603
334	$hdr{host} = $uhost;	604	# leave out fragment and query string, just a heuristic
		605	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		606	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		607
335	$hdr{"content-length"} = length $arg{body};	608	$hdr{"content-length"} = length $arg{body}
		609	if length $arg{body} \|\| $method ne "GET";
		610
		611	$hdr{connection} = "close TE"; #1.1
		612	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
336		613
337	my %state = (connect_guard => 1);	614	my %state = (connect_guard => 1);
338		615
339	_get_slot $uhost, sub {	616	_get_slot $uhost, sub {
340	$state{slot_guard} = shift;	617	$state{slot_guard} = shift;
341		618
342	return unless $state{connect_guard};	619	return unless $state{connect_guard};
343		620
344	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	621	my $ae_error = 595; # connecting
		622
		623	my $connect_cb = sub {
345	$state{fh} = shift	624	$state{fh} = shift
		625	or do {
		626	my $err = "$!";
		627	%state = ();
346	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	628	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
347	pop; # free memory, save a tree	629	};
348		630
349	return unless delete $state{connect_guard};	631	return unless delete $state{connect_guard};
350		632
351	# get handle	633	# get handle
352	$state{handle} = new AnyEvent::Handle	634	$state{handle} = new AnyEvent::Handle
353	fh => $state{fh},	635	fh => $state{fh},
		636	peername => $rhost,
		637	tls_ctx => $arg{tls_ctx},
		638	# these need to be reconfigured on keepalive handles
354	timeout => $timeout;	639	timeout => $timeout,
		640	on_error => sub {
		641	%state = ();
		642	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
		643	},
		644	on_eof => sub {
		645	%state = ();
		646	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
		647	},
		648	;
355		649
356	# limit the number of persistent connections	650	# limit the number of persistent connections
357	# keepalive not yet supported	651	# keepalive not yet supported
358	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	652	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
359	++$KA_COUNT{$_[1]};	653	# ++$KA_COUNT{$_[1]};
360	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	654	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
361	--$KA_COUNT{$_[1]}	655	# --$KA_COUNT{$_[1]}
362	};	656	# };
363	$hdr{connection} = "keep-alive";	657	# $hdr{connection} = "keep-alive";
364	} else {
365	delete $hdr{connection};
366	}	658	# }
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		659
379	$state{handle}->starttls ("connect") if $rscheme eq "https";	660	$state{handle}->starttls ("connect") if $rscheme eq "https";
380		661
381	# handle actual, non-tunneled, request	662	# handle actual, non-tunneled, request
382	my $handle_actual_request = sub {	663	my $handle_actual_request = sub {
		664	$ae_error = 596; # request phase
		665
383	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	666	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
384		667
385	# send request	668	# send request
386	$state{handle}->push_write (	669	$state{handle}->push_write (
387	"$method $rpath HTTP/1.0\015\012"	670	"$method $rpath HTTP/1.1\015\012"
388	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	671	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
389	. "\015\012"	672	. "\015\012"
390	. (delete $arg{body})	673	. (delete $arg{body})
391	);	674	);
392		675
		676	# return if error occured during push_write()
		677	return unless %state;
		678
393	%hdr = (); # reduce memory usage, save a kitten	679	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
394		680
395	# status line	681	# status line and headers
396	$state{handle}->push_read (line => $qr_nl, sub {	682	$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") {	683	for ("$_[1]") {
410	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	684	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411		685
412	# we support spaces in field names, as lotus domino	686	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
413	# creates them (actually spaces around seperators	687	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		688
		689	# 100 Continue handling
		690	# should not happen as we don't send expect: 100-continue,
		691	# but we handle it just in case.
		692	# since we send the request body regardless, if we get an error
		693	# we are out of-sync, which we currently do NOT handle correctly.
		694	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		695	if $2 eq 100;
		696
		697	push @pseudo,
		698	HTTPVersion => $1,
		699	Status => $2,
		700	Reason => $3,
423	/\G$/	701	;
		702
		703	my $hdr = parse_hdr
424	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	704	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		705
		706	%hdr = (%$hdr, @pseudo);
		707	}
		708
		709	# redirect handling
		710	# microsoft and other shitheads don't give a shit for following standards,
		711	# try to support some common forms of broken Location headers.
		712	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		713	$hdr{location} =~ s/^\.\/+//;
		714
		715	my $url = "$rscheme://$uhost:$uport";
		716
		717	unless ($hdr{location} =~ s/^\///) {
		718	$url .= $upath;
		719	$url =~ s/\/[^\/]*$//;
425	}	720	}
426		721
427	substr $_, 0, 1, ""	722	$hdr{location} = "$url/$hdr{location}";
428	for values %hdr;	723	}
429		724
430	my $finish = sub {	725	my $redirect;
431	# TODO: use destroy method, when/if available	726
		727	if ($recurse) {
		728	my $status = $hdr{Status};
		729
		730	# industry standard is to redirect POST as GET for
		731	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		732	# also, the UA should ask the user for 301 and 307 and POST,
		733	# industry standard seems to be to simply follow.
		734	# we go with the industry standard.
		735	if ($status == 301 or $status == 302 or $status == 303) {
		736	# HTTP/1.1 is unclear on how to mutate the method
		737	$method = "GET" unless $method eq "HEAD";
		738	$redirect = 1;
		739	} elsif ($status == 307) {
		740	$redirect = 1;
		741	}
		742	}
		743
		744	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		745	my $may_keep_alive = $_[3];
		746
432	#$state{handle}->destroy;	747	$state{handle}->destroy if $state{handle};
433	$state{handle}->on_eof (undef);
434	$state{handle}->on_error (undef);
435	%state = ();	748	%state = ();
436		749
		750	if (defined $_[1]) {
		751	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		752	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		753	}
		754
437	# set-cookie processing	755	# set-cookie processing
438	if ($arg{cookie_jar}) {	756	if ($arg{cookie_jar}) {
439	for ($hdr{"set-cookie"}) {	757	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
440	# parse NAME=VALUE	758	}
		759
		760	if ($redirect && exists $hdr{location}) {
		761	# we ignore any errors, as it is very common to receive
		762	# Content-Length != 0 but no actual body
		763	# we also access %hdr, as $_[1] might be an erro
		764	http_request (
		765	$method => $hdr{location},
		766	%arg,
		767	recurse => $recurse - 1,
		768	Redirect => [$_[0], \%hdr],
		769	$cb);
		770	} else {
		771	$cb->($_[0], \%hdr);
		772	}
		773	};
		774
		775	$ae_error = 597; # body phase
		776
		777	my $len = $hdr{"content-length"};
		778
		779	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		780	$finish->(undef, 598 => "Request cancelled by on_header");
		781	} elsif (
		782	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		783	or $method eq "HEAD"
		784	or (defined $len && !$len)
		785	) {
		786	# no body
		787	$finish->("", undef, undef, 1);
		788	} else {
		789	# body handling, many different code paths
		790	# - no body expected
		791	# - want_body_handle
		792	# - te chunked
		793	# - 2x length known (with or without on_body)
		794	# - 2x length not known (with or without on_body)
		795	if (!$redirect && $arg{want_body_handle}) {
		796	$_[0]->on_eof (undef);
		797	$_[0]->on_error (undef);
		798	$_[0]->on_read (undef);
		799
		800	$finish->(delete $state{handle});
		801
		802	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		803	my $cl = 0;
		804	my $body = undef;
		805	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		806
		807	my $read_chunk; $read_chunk = sub {
		808	$_[1] =~ /^([0-9a-fA-F]+)/
		809	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		810
		811	my $len = hex $1;
		812
		813	if ($len) {
		814	$cl += $len;
		815
		816	$_[0]->push_read (chunk => $len, sub {
		817	$on_body->($_[1], \%hdr)
		818	or return $finish->(undef, 598 => "Request cancelled by on_body");
		819
		820	$_[0]->push_read (line => sub {
		821	length $_[1]
		822	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		823	$_[0]->push_read (line => $read_chunk);
		824	});
441	my @kv;	825	});
		826	} else {
		827	$hdr{"content-length"} \|\|= $cl;
442		828
443	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {	829	$_[0]->push_read (line => $qr_nlnl, sub {
444	my $name = $1;	830	if (length $_[1]) {
445	my $value = $3;
446
447	unless ($value) {	831	for ("$_[1]") {
		832	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		833
		834	my $hdr = parse_hdr
		835	or return $finish->(undef, $ae_error => "Garbled response trailers");
		836
		837	%hdr = (%hdr, %$hdr);
448	$value = $2;	838	}
449	$value =~ s/\\(.)/$1/gs;
450	}	839	}
451		840
452	push @kv, $name => $value;	841	$finish->($body, undef, undef, 1);
453
454	last unless /\G\s*;/gc;
455	}	842	});
456
457	last unless @kv;
458
459	my $name = shift @kv;
460	my %kv = (value => shift @kv, @kv);
461
462	my $cdom;
463	my $cpath = (delete $kv{path}) \|\| "/";
464
465	if (exists $kv{domain}) {
466	$cdom = delete $kv{domain};
467
468	$cdom =~ s/^\.?/./; # make sure it starts with a "."
469
470	next if $cdom =~ /\.$/;
471
472	# this is not rfc-like and not netscape-like. go figure.
473	my $ndots = $cdom =~ y/.//;
474	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
475	} else {
476	$cdom = $uhost;
477	}
478
479	# store it
480	$arg{cookie_jar}{version} = 1;
481	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
482
483	redo if /\G\s*,/gc;
484	}	843	}
485	}	844	};
486		845
487	# microsoft and other shitheads don't give a shit for following standards,	846	$_[0]->push_read (line => $read_chunk);
488	# try to support some common forms of broken Location headers.
489	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
490	$_[1]{location} =~ s/^\.\/+//;
491		847
492	my $url = "$rscheme://$uhost:$uport";	848	} elsif ($arg{on_body}) {
493
494	unless ($_[1]{location} =~ s/^\///) {
495	$url .= $upath;
496	$url =~ s/\/[^\/]*$//;
497	}
498
499	$_[1]{location} = "$url/$_[1]{location}";
500	}
501
502	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
503	# apparently, mozilla et al. just change POST to GET here
504	# more research is needed before we do the same
505	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
506	} elsif ($_[1]{Status} == 303 && $recurse) {
507	# even http/1.1 is unclear on how to mutate the method
508	$method = "GET" unless $method eq "HEAD";
509	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
510	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
511	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
512	} else {	849	if ($len) {
513	$cb->($_[0], $_[1]);	850	$_[0]->on_read (sub {
514	}	851	$len -= length $_[0]{rbuf};
515	};
516		852
517	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	853	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
518	$finish->(undef, \%hdr);	854	or return $finish->(undef, 598 => "Request cancelled by on_body");
519	} else {	855
520	if (exists $hdr{"content-length"}) {
521	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
522	# could cache persistent connection now
523	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
524	# but we don't, due to misdesigns, this is annoyingly complex
525	};	856	$len > 0
526		857	or $finish->("", undef, undef, 1);
527	$finish->($_[1], \%hdr);
528	});	858	});
529	} else {	859	} else {
530	# too bad, need to read until we get an error or EOF,	860	$_[0]->on_eof (sub {
531	# no way to detect winged data.	861	$finish->("");
		862	});
		863	$_[0]->on_read (sub {
		864	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		865	or $finish->(undef, 598 => "Request cancelled by on_body");
		866	});
		867	}
		868	} else {
		869	$_[0]->on_eof (undef);
		870
		871	if ($len) {
		872	$_[0]->on_read (sub {
		873	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		874	if $len <= length $_[0]{rbuf};
		875	});
		876	} else {
532	$_[0]->on_error (sub {	877	$_[0]->on_error (sub {
		878	($! == Errno::EPIPE \|\| !$!)
533	$finish->($_[0]{rbuf}, \%hdr);	879	? $finish->(delete $_[0]{rbuf})
		880	: $finish->(undef, $ae_error => $_[2]);
534	});	881	});
535	$_[0]->on_eof (undef);
536	$_[0]->on_read (sub { });	882	$_[0]->on_read (sub { });
537	}	883	}
538	}	884	}
539	});	885	}
540	});	886	};
		887
		888	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
541	};	889	};
542		890
543	# now handle proxy-CONNECT method	891	# now handle proxy-CONNECT method
544	if ($proxy && $uscheme eq "https") {	892	if ($proxy && $uscheme eq "https") {
545	# oh dear, we have to wrap it into a connect request	893	# oh dear, we have to wrap it into a connect request
546		894
547	# maybe re-use $uauthority with patched port?	895	# maybe re-use $uauthority with patched port?
548	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	896	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
549	$state{handle}->push_read (line => $qr_nlnl, sub {	897	$state{handle}->push_read (line => $qr_nlnl, sub {
550	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	898	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
551	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));	899	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
552		900
553	if ($2 == 200) {	901	if ($2 == 200) {
554	$rpath = $upath;	902	$rpath = $upath;
555	&$handle_actual_request;	903	&$handle_actual_request;
556	} else {	904	} else {
557	%state = ();	905	%state = ();
558	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	906	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
559	}	907	}
560	});	908	});
561	} else {	909	} else {
562	&$handle_actual_request;	910	&$handle_actual_request;
563	}	911	}
564
565	}, sub {
566	$timeout
567	};	912	};
		913
		914	my $tcp_connect = $arg{tcp_connect}
		915	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		916
		917	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		918
568	};	919	};
569		920
570	defined wantarray && AnyEvent::Util::guard { %state = () }	921	defined wantarray && AnyEvent::Util::guard { %state = () }
571	}	922	}
572		923
…		…
586	&http_request	937	&http_request
587	}	938	}
588		939
589	=back	940	=back
590		941
		942	=head2 DNS CACHING
		943
		944	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		945	the actual connection, which in turn uses AnyEvent::DNS to resolve
		946	hostnames. The latter is a simple stub resolver and does no caching
		947	on its own. If you want DNS caching, you currently have to provide
		948	your own default resolver (by storing a suitable resolver object in
		949	C<$AnyEvent::DNS::RESOLVER>).
		950
591	=head2 GLOBAL FUNCTIONS AND VARIABLES	951	=head2 GLOBAL FUNCTIONS AND VARIABLES
592		952
593	=over 4	953	=over 4
594		954
595	=item AnyEvent::HTTP::set_proxy "proxy-url"	955	=item AnyEvent::HTTP::set_proxy "proxy-url"
596		956
597	Sets the default proxy server to use. The proxy-url must begin with a	957	Sets the default proxy server to use. The proxy-url must begin with a
598	string of the form C<http://host:port> (optionally C<https:...>).	958	string of the form C<http://host:port> (optionally C<https:...>), croaks
		959	otherwise.
		960
		961	To clear an already-set proxy, use C<undef>.
		962
		963	=item $date = AnyEvent::HTTP::format_date $timestamp
		964
		965	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		966	Date (RFC 2616).
		967
		968	=item $timestamp = AnyEvent::HTTP::parse_date $date
		969
		970	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		971	bunch of minor variations of those, and returns the corresponding POSIX
		972	timestamp, or C<undef> if the date cannot be parsed.
599		973
600	=item $AnyEvent::HTTP::MAX_RECURSE	974	=item $AnyEvent::HTTP::MAX_RECURSE
601		975
602	The default value for the C<recurse> request parameter (default: C<10>).	976	The default value for the C<recurse> request parameter (default: C<10>).
603		977
604	=item $AnyEvent::HTTP::USERAGENT	978	=item $AnyEvent::HTTP::USERAGENT
605		979
606	The default value for the C<User-Agent> header (the default is	980	The default value for the C<User-Agent> header (the default is
607	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	981	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
608		982
609	=item $AnyEvent::HTTP::MAX_PERSISTENT	983	=item $AnyEvent::HTTP::MAX_PER_HOST
610		984
611	The maximum number of persistent connections to keep open (default: 8).	985	The maximum number of concurrent connections to the same host (identified
		986	by the hostname). If the limit is exceeded, then the additional requests
		987	are queued until previous connections are closed.
612		988
613	Not implemented currently.	989	The default value for this is C<4>, and it is highly advisable to not
614		990	increase it.
615	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
616
617	The maximum time to cache a persistent connection, in seconds (default: 2).
618
619	Not implemented currently.
620		991
621	=item $AnyEvent::HTTP::ACTIVE	992	=item $AnyEvent::HTTP::ACTIVE
622		993
623	The number of active connections. This is not the number of currently	994	The number of active connections. This is not the number of currently
624	running requests, but the number of currently open and non-idle TCP	995	running requests, but the number of currently open and non-idle TCP
…		…
626		997
627	=back	998	=back
628		999
629	=cut	1000	=cut
630		1001
		1002	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1003	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1004
		1005	sub format_date($) {
		1006	my ($time) = @_;
		1007
		1008	# RFC 822/1123 format
		1009	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1010
		1011	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1012	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1013	$H, $M, $S;
		1014	}
		1015
		1016	sub parse_date($) {
		1017	my ($date) = @_;
		1018
		1019	my ($d, $m, $y, $H, $M, $S);
		1020
		1021	if ($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$/) {
		1022	# RFC 822/1123, required by RFC 2616 (with " ")
		1023	# cookie dates (with "-")
		1024
		1025	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1026
		1027	} elsif ($date =~ /^[A-Z][a-z][a-z]+, ([0-9][0-9]?)-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]?):([0-9][0-9]?):([0-9][0-9]?) GMT$/) {
		1028	# RFC 850
		1029	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1030
		1031	} elsif ($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])$/) {
		1032	# ISO C's asctime
		1033	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1034	}
		1035	# other formats fail in the loop below
		1036
		1037	for (0..11) {
		1038	if ($m eq $month[$_]) {
		1039	require Time::Local;
		1040	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1041	}
		1042	}
		1043
		1044	undef
		1045	}
		1046
631	sub set_proxy($) {	1047	sub set_proxy($) {
		1048	if (length $_[0]) {
632	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1049	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1050	or Carp::croak "$_[0]: invalid proxy URL";
		1051	$PROXY = [$2, $3 \|\| 3128, $1]
		1052	} else {
		1053	undef $PROXY;
		1054	}
633	}	1055	}
634		1056
635	# initialise proxy from environment	1057	# initialise proxy from environment
		1058	eval {
636	set_proxy $ENV{http_proxy};	1059	set_proxy $ENV{http_proxy};
		1060	};
		1061
		1062	=head2 SOCKS PROXIES
		1063
		1064	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1065	compile your perl to support socks, or use an external program such as
		1066	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1067	transparently.
		1068
		1069	Alternatively, for AnyEvent::HTTP only, you can use your own
		1070	C<tcp_connect> function that does the proxy handshake - here is an example
		1071	that works with socks4a proxies:
		1072
		1073	use Errno;
		1074	use AnyEvent::Util;
		1075	use AnyEvent::Socket;
		1076	use AnyEvent::Handle;
		1077
		1078	# host, port and username of/for your socks4a proxy
		1079	my $socks_host = "10.0.0.23";
		1080	my $socks_port = 9050;
		1081	my $socks_user = "";
		1082
		1083	sub socks4a_connect {
		1084	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1085
		1086	my $hdl = new AnyEvent::Handle
		1087	connect => [$socks_host, $socks_port],
		1088	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1089	on_error => sub { $connect_cb->() },
		1090	;
		1091
		1092	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1093
		1094	$hdl->push_read (chunk => 8, sub {
		1095	my ($hdl, $chunk) = @_;
		1096	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1097
		1098	if ($status == 0x5a) {
		1099	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1100	} else {
		1101	$! = Errno::ENXIO; $connect_cb->();
		1102	}
		1103	});
		1104
		1105	$hdl
		1106	}
		1107
		1108	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1109	possibly after switching off other proxy types:
		1110
		1111	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1112
		1113	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1114	my ($data, $headers) = @_;
		1115	...
		1116	};
637		1117
638	=head1 SEE ALSO	1118	=head1 SEE ALSO
639		1119
640	L<AnyEvent>.	1120	L<AnyEvent>.
641		1121
642	=head1 AUTHOR	1122	=head1 AUTHOR
643		1123
644	Marc Lehmann <schmorp@schmorp.de>	1124	Marc Lehmann <schmorp@schmorp.de>
645	http://home.schmorp.de/	1125	http://home.schmorp.de/
646		1126
		1127	With many thanks to Дмитрий Шалашов, who provided countless
		1128	testcases and bugreports.
		1129
647	=cut	1130	=cut
648		1131
649	1	1132	1
650		1133

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.34 by root, Wed Oct 29 14:51:07 2008 UTC vs. Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.34 by root, Wed Oct 29 14:51:07 2008 UTC vs.
Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC