ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/AnyEvent-HTTP/HTTP.pm

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC vs.
Revision 1.92 by root, Tue Jan 4 08:17:59 2011 UTC

…		…
36		36
37	=cut	37	=cut
38		38
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use common::sense;
42	no warnings;
43		42
44	use Errno ();	43	use Errno ();
45		44
46	use AnyEvent 5.0 ();	45	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	46	use AnyEvent::Util ();
48	use AnyEvent::Handle ();	47	use AnyEvent::Handle ();
49		48
50	use base Exporter::;	49	use base Exporter::;
51		50
52	our $VERSION = '1.5';	51	our $VERSION = '2.0';
53		52
54	our @EXPORT = qw(http_get http_post http_head http_request);	53	our @EXPORT = qw(http_get http_post http_head http_request);
55		54
56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	55	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
57	our $MAX_RECURSE = 10;	56	our $MAX_RECURSE = 10;
58	our $MAX_PERSISTENT = 8;
59	our $PERSISTENT_TIMEOUT = 2;	57	our $PERSISTENT_TIMEOUT = 3;
60	our $TIMEOUT = 300;	58	our $TIMEOUT = 300;
61		59	our $MAX_PER_HOST = 4; # changing this is evil
62	# changing these is evil
63	our $MAX_PERSISTENT_PER_HOST = 0;
64	our $MAX_PER_HOST = 4;
65		60
66	our $PROXY;	61	our $PROXY;
67	our $ACTIVE = 0;	62	our $ACTIVE = 0;
68		63
69	my %KA_COUNT; # number of open keep-alive connections per host	64	my %KA_CACHE; # indexed by uhost currently, points to [$handle...] array
70	my %CO_SLOT; # number of open connections, and wait queue, per host	65	my %CO_SLOT; # number of open connections, and wait queue, per host
71		66
72	=item http_get $url, key => value..., $cb->($data, $headers)	67	=item http_get $url, key => value..., $cb->($data, $headers)
73		68
74	Executes an HTTP-GET request. See the http_request function for details on	69	Executes an HTTP-GET request. See the http_request function for details on
…		…
122		117
123	If the server sends a header multiple times, then their contents will be	118	If the server sends a header multiple times, then their contents will be
124	joined together with a comma (C<,>), as per the HTTP spec.	119	joined together with a comma (C<,>), as per the HTTP spec.
125		120
126	If an internal error occurs, such as not being able to resolve a hostname,	121	If an internal error occurs, such as not being able to resolve a hostname,
127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	122	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
128	(usually C<599>) and the C<Reason> pseudo-header will contain an error	123	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
129	message.	124	message. Currently the following status codes are used:
		125
		126	=over 4
		127
		128	=item 595 - errors during connection etsbalishment, proxy handshake.
		129
		130	=item 596 - errors during TLS negotiation, request sending and header processing.
		131
		132	=item 597 - errors during body receiving or processing.
		133
		134	=item 598 - user aborted request via C<on_header> or C<on_body>.
		135
		136	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		137
		138	=back
130		139
131	A typical callback might look like this:	140	A typical callback might look like this:
132		141
133	sub {	142	sub {
134	my ($body, $hdr) = @_;	143	my ($body, $hdr) = @_;
…		…
152		161
153	=item headers => hashref	162	=item headers => hashref
154		163
155	The request headers to use. Currently, C<http_request> may provide its own	164	The request headers to use. Currently, C<http_request> may provide its own
156	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and	165	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
157	will provide defaults for C<TE:>, C<Referer:> and C<User-Agent:> (this can	166	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
158	be suppressed by using C<undef> for these headers in which case they won't	167	(this can be suppressed by using C<undef> for these headers in which case
159	be sent at all).	168	they won't be sent at all).
		169
		170	You really should provide your own C<User-Agent:> header value that is
		171	appropriate for your program - I wouldn't be surprised if the default
		172	AnyEvent string gets blocked by webservers sooner or later.
160		173
161	=item timeout => $seconds	174	=item timeout => $seconds
162		175
163	The time-out to use for various stages - each connect attempt will reset	176	The time-out to use for various stages - each connect attempt will reset
164	the timeout, as will read or write activity, i.e. this is not an overall	177	the timeout, as will read or write activity, i.e. this is not an overall
…		…
169	=item proxy => [$host, $port[, $scheme]] or undef	182	=item proxy => [$host, $port[, $scheme]] or undef
170		183
171	Use the given http proxy for all requests. If not specified, then the	184	Use the given http proxy for all requests. If not specified, then the
172	default proxy (as specified by C<$ENV{http_proxy}>) is used.	185	default proxy (as specified by C<$ENV{http_proxy}>) is used.
173		186
174	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	187	C<$scheme> must be either missing or must be C<http> for HTTP.
175	HTTPS.
176		188
177	=item body => $string	189	=item body => $string
178		190
179	The request body, usually empty. Will be sent as-is (future versions of	191	The request body, usually empty. Will be sent as-is (future versions of
180	this module might offer more options).	192	this module might offer more options).
…		…
182	=item cookie_jar => $hash_ref	194	=item cookie_jar => $hash_ref
183		195
184	Passing this parameter enables (simplified) cookie-processing, loosely	196	Passing this parameter enables (simplified) cookie-processing, loosely
185	based on the original netscape specification.	197	based on the original netscape specification.
186		198
187	The C<$hash_ref> must be an (initially empty) hash reference which will	199	The C<$hash_ref> must be an (initially empty) hash reference which
188	get updated automatically. It is possible to save the cookie_jar to	200	will get updated automatically. It is possible to save the cookie jar
189	persistent storage with something like JSON or Storable, but this is not	201	to persistent storage with something like JSON or Storable - see the
190	recommended, as expiry times are currently being ignored.	202	C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
		203	expired or session-only cookies, and also for documentation on the format
		204	of the cookie jar.
191		205
192	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
193	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
194	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 most cookie-using sites
195	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
196	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.
197		215
198	=item tls_ctx => $scheme | $tls_ctx	216	=item tls_ctx => $scheme | $tls_ctx
199		217
200	Specifies the AnyEvent::TLS context to be used for https connections. This	218	Specifies the AnyEvent::TLS context to be used for https connections. This
201	parameter follows the same rules as the C<tls_ctx> parameter to	219	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
204	verification, highest compatibility) and high-security (CA and common-name	222	verification, highest compatibility) and high-security (CA and common-name
205	verification) TLS context.	223	verification) TLS context.
206		224
207	The default for this option is C<low>, which could be interpreted as "give	225	The default for this option is C<low>, which could be interpreted as "give
208	me the page, no matter what".	226	me the page, no matter what".
		227
		228	See also the C<sessionid> parameter.
		229
		230	=item session => $string
		231
		232	The module might reuse connections to the same host internally. Sometimes
		233	(e.g. when using TLS), you do not want to reuse connections from other
		234	sessions. This can be achieved by setting this parameter to some unique
		235	ID (such as the address of an object storing your state data, or the TLS
		236	context) - only connections using the same unique ID will be reused.
209		237
210	=item on_prepare => $callback->($fh)	238	=item on_prepare => $callback->($fh)
211		239
212	In rare cases you need to "tune" the socket before it is used to	240	In rare cases you need to "tune" the socket before it is used to
213	connect (for exmaple, to bind it on a given IP address). This parameter	241	connect (for exmaple, to bind it on a given IP address). This parameter
…		…
283	called. Instead of the C<$body> argument containing the body data, the	311	called. Instead of the C<$body> argument containing the body data, the
284	callback will receive the L<AnyEvent::Handle> object associated with the	312	callback will receive the L<AnyEvent::Handle> object associated with the
285	connection. In error cases, C<undef> will be passed. When there is no body	313	connection. In error cases, C<undef> will be passed. When there is no body
286	(e.g. status C<304>), the empty string will be passed.	314	(e.g. status C<304>), the empty string will be passed.
287		315
288	The handle object might or might not be in TLS mode, might be connected to	316	The handle object might or might not be in TLS mode, might be connected
289	a proxy, be a persistent connection etc., and configured in unspecified	317	to a proxy, be a persistent connection, use chunked transfer encoding
290	ways. The user is responsible for this handle (it will not be used by this	318	etc., and configured in unspecified ways. The user is responsible for this
291	module anymore).	319	handle (it will not be used by this module anymore).
292		320
293	This is useful with some push-type services, where, after the initial	321	This is useful with some push-type services, where, after the initial
294	headers, an interactive protocol is used (typical example would be the	322	headers, an interactive protocol is used (typical example would be the
295	push-style twitter API which starts a JSON/XML stream).	323	push-style twitter API which starts a JSON/XML stream).
296		324
297	If you think you need this, first have a look at C<on_body>, to see if	325	If you think you need this, first have a look at C<on_body>, to see if
298	that doesn't solve your problem in a better way.	326	that doesn't solve your problem in a better way.
		327
		328	=item persistent => $boolean
		329
		330	Try to create/reuse a persistent connection. When this flag is set
		331	(default: true for idempotent requests, false for all others), then
		332	C<http_request> tries to re-use an existing (previously-created)
		333	persistent connection to the host and, failing that, tries to create a new
		334	one.
		335
		336	Requests failing in certain ways will be automatically retried once, which
		337	is dangerous for non-idempotent requests, which is why it defaults to off
		338	for them. The reason for this is because the bozos who designed HTTP/1.1
		339	made it impossible to distinguish between a fatal error and a normal
		340	connection timeout, so you never know whether there was a problem with
		341	your request or not.
		342
		343	When reusing an existent connection, many parameters (such as TLS context)
		344	will be ignored. See the C<session> parameter for a workaround.
		345
		346	=item keepalive => $boolean
		347
		348	Only used when C<persistent> is also true. This parameter decides whether
		349	C<http_request> tries to handshake a HTTP/1.0-style keep-alive connection
		350	(as opposed to only a HTTP/1.1 persistent connection).
		351
		352	The default is true, except when using a proxy, in which case it defaults
		353	to false, as HTTP/1.0 proxies cannot support this in a meaningful way.
		354
		355	=item handle_params => { key => value ... }
		356
		357	The key-value pairs in this hash will be passed to any L<AnyEvent::Handle>
		358	constructor that is called - not all requests will create a handle, and
		359	sometimes more than one is created, so this parameter is only good for
		360	setting hints.
		361
		362	Example: set the maximum read size to 4096, to potentially conserve memory
		363	at the cost of speed.
		364
		365	handle_params => {
		366	max_read_size => 4096,
		367	},
299		368
300	=back	369	=back
301		370
302	Example: do a simple HTTP GET request for http://www.nethype.de/ and print	371	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
303	the response body.	372	the response body.
…		…
310	Example: do a HTTP HEAD request on https://www.google.com/, use a	379	Example: do a HTTP HEAD request on https://www.google.com/, use a
311	timeout of 30 seconds.	380	timeout of 30 seconds.
312		381
313	http_request	382	http_request
314	GET => "https://www.google.com",	383	GET => "https://www.google.com",
		384	headers => { "user-agent" => "MySearchClient 1.0" },
315	timeout => 30,	385	timeout => 30,
316	sub {	386	sub {
317	my ($body, $hdr) = @_;	387	my ($body, $hdr) = @_;
318	use Data::Dumper;	388	use Data::Dumper;
319	print Dumper $hdr;	389	print Dumper $hdr;
…		…
329	};	399	};
330		400
331	undef $request;	401	undef $request;
332		402
333	=cut	403	=cut
		404
		405	#############################################################################
		406	# wait queue/slots
334		407
335	sub _slot_schedule;	408	sub _slot_schedule;
336	sub _slot_schedule($) {	409	sub _slot_schedule($) {
337	my $host = shift;	410	my $host = shift;
338		411
…		…
360	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	433	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
361		434
362	_slot_schedule $_[0];	435	_slot_schedule $_[0];
363	}	436	}
364		437
		438	#############################################################################
		439	# cookie handling
		440
		441	# expire cookies
		442	sub cookie_jar_expire($;$) {
		443	my ($jar, $session_end) = @_;
		444
		445	%$jar = () if $jar->{version} != 1;
		446
		447	my $anow = AE::now;
		448
		449	while (my ($chost, $paths) = each %$jar) {
		450	next unless ref $paths;
		451
		452	while (my ($cpath, $cookies) = each %$paths) {
		453	while (my ($cookie, $kv) = each %$cookies) {
		454	if (exists $kv->{_expires}) {
		455	delete $cookies->{$cookie}
		456	if $anow > $kv->{_expires};
		457	} elsif ($session_end) {
		458	delete $cookies->{$cookie};
		459	}
		460	}
		461
		462	delete $paths->{$cpath}
		463	unless %$cookies;
		464	}
		465
		466	delete $jar->{$chost}
		467	unless %$paths;
		468	}
		469	}
		470
		471	# extract cookies from jar
		472	sub cookie_jar_extract($$$$) {
		473	my ($jar, $scheme, $host, $path) = @_;
		474
		475	%$jar = () if $jar->{version} != 1;
		476
		477	my @cookies;
		478
		479	while (my ($chost, $paths) = each %$jar) {
		480	next unless ref $paths;
		481
		482	if ($chost =~ /^\./) {
		483	next unless $chost eq substr $host, -length $chost;
		484	} elsif ($chost =~ /\./) {
		485	next unless $chost eq $host;
		486	} else {
		487	next;
		488	}
		489
		490	while (my ($cpath, $cookies) = each %$paths) {
		491	next unless $cpath eq substr $path, 0, length $cpath;
		492
		493	while (my ($cookie, $kv) = each %$cookies) {
		494	next if $scheme ne "https" && exists $kv->{secure};
		495
		496	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
		497	delete $cookies->{$cookie};
		498	next;
		499	}
		500
		501	my $value = $kv->{value};
		502
		503	if ($value =~ /[=;,[:space:]]/) {
		504	$value =~ s/([\\"])/\\$1/g;
		505	$value = "\"$value\"";
		506	}
		507
		508	push @cookies, "$cookie=$value";
		509	}
		510	}
		511	}
		512
		513	\@cookies
		514	}
		515
		516	# parse set_cookie header into jar
		517	sub cookie_jar_set_cookie($$$$) {
		518	my ($jar, $set_cookie, $host, $date) = @_;
		519
		520	my $anow = int AE::now;
		521	my $snow; # server-now
		522
		523	for ($set_cookie) {
		524	# parse NAME=VALUE
		525	my @kv;
		526
		527	# expires is not http-compliant in the original cookie-spec,
		528	# we support the official date format and some extensions
		529	while (
		530	m{
		531	\G\s*
		532	(?:
		533	expires \s*=\s* ([A-Z][a-z][a-z]+,\ [^,;]+)
		534	| ([^=;,[:space:]]+) (?: \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) ) )?
		535	)
		536	}gcxsi
		537	) {
		538	my $name = $2;
		539	my $value = $4;
		540
		541	if (defined $1) {
		542	# expires
		543	$name = "expires";
		544	$value = $1;
		545	} elsif (defined $3) {
		546	# quoted
		547	$value = $3;
		548	$value =~ s/\\(.)/$1/gs;
		549	}
		550
		551	push @kv, lc $name, $value;
		552
		553	last unless /\G\s*;/gc;
		554	}
		555
		556	last unless @kv;
		557
		558	my $name = shift @kv;
		559	my %kv = (value => shift @kv, @kv);
		560
		561	if (exists $kv{"max-age"}) {
		562	$kv{_expires} = $anow + delete $kv{"max-age"};
		563	} elsif (exists $kv{expires}) {
		564	$snow ||= parse_date ($date) || $anow;
		565	$kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
		566	} else {
		567	delete $kv{_expires};
		568	}
		569
		570	my $cdom;
		571	my $cpath = (delete $kv{path}) || "/";
		572
		573	if (exists $kv{domain}) {
		574	$cdom = delete $kv{domain};
		575
		576	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		577
		578	next if $cdom =~ /\.$/;
		579
		580	# this is not rfc-like and not netscape-like. go figure.
		581	my $ndots = $cdom =~ y/.//;
		582	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		583	} else {
		584	$cdom = $host;
		585	}
		586
		587	# store it
		588	$jar->{version} = 1;
		589	$jar->{lc $cdom}{$cpath}{$name} = \%kv;
		590
		591	redo if /\G\s*,/gc;
		592	}
		593	}
		594
		595	#############################################################################
		596	# keepalive/persistent connection cache
		597
		598	# fetch a connection from the keepalive cache
		599	sub ka_fetch($) {
		600	my $ka_key = shift;
		601
		602	my $hdl = pop @{ $KA_CACHE{$ka_key} }; # currently we reuse the MOST RECENTLY USED connection
		603	delete $KA_CACHE{$ka_key}
		604	unless @{ $KA_CACHE{$ka_key} };
		605
		606	$hdl
		607	}
		608
		609	sub ka_store($$) {
		610	my ($ka_key, $hdl) = @_;
		611
		612	my $kaa = $KA_CACHE{$ka_key} ||= [];
		613
		614	my $destroy = sub {
		615	my @ka = grep $_ != $hdl, @{ $KA_CACHE{$ka_key} };
		616
		617	$hdl->destroy;
		618
		619	@ka
		620	? $KA_CACHE{$ka_key} = \@ka
		621	: delete $KA_CACHE{$ka_key};
		622	};
		623
		624	# on error etc., destroy
		625	$hdl->on_error ($destroy);
		626	$hdl->on_eof ($destroy);
		627	$hdl->on_read ($destroy);
		628	$hdl->timeout ($PERSISTENT_TIMEOUT);
		629
		630	push @$kaa, $hdl;
		631	shift @$kaa while @$kaa > $MAX_PER_HOST;
		632	}
		633
		634	#############################################################################
		635	# utilities
		636
365	# continue to parse $_ for headers and place them into the arg	637	# continue to parse $_ for headers and place them into the arg
366	sub parse_hdr() {	638	sub _parse_hdr() {
367	my %hdr;	639	my %hdr;
368		640
369	# things seen, not parsed:	641	# things seen, not parsed:
370	# p3pP="NON CUR OTPi OUR NOR UNI"	642	# p3pP="NON CUR OTPi OUR NOR UNI"
371		643
…		…
385	for values %hdr;	657	for values %hdr;
386		658
387	\%hdr	659	\%hdr
388	}	660	}
389		661
		662	#############################################################################
		663	# http_get
		664
390	our $qr_nlnl = qr{(?<![^\012])\015?\012};	665	our $qr_nlnl = qr{(?<![^\012])\015?\012};
391		666
392	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	667	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
393	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	668	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		669
		670	# maybe it should just become a normal object :/
		671
		672	sub _destroy_state(\%) {
		673	my ($state) = @_;
		674
		675	$state->{handle}->destroy if $state->{handle};
		676	%$state = ();
		677	}
		678
		679	sub _error(\%$$) {
		680	my ($state, $cb, $hdr) = @_;
		681
		682	&_destroy_state ($state);
		683
		684	$cb->(undef, $hdr);
		685	()
		686	}
394		687
395	sub http_request($$@) {	688	sub http_request($$@) {
396	my $cb = pop;	689	my $cb = pop;
397	my ($method, $url, %arg) = @_;	690	my ($method, $url, %arg) = @_;
398		691
…		…
419	if $recurse < 0;	712	if $recurse < 0;
420		713
421	my $proxy = $arg{proxy} || $PROXY;	714	my $proxy = $arg{proxy} || $PROXY;
422	my $timeout = $arg{timeout} || $TIMEOUT;	715	my $timeout = $arg{timeout} || $TIMEOUT;
423		716
424	my ($uscheme, $uauthority, $upath, $query, $fragment) =	717	my ($uscheme, $uauthority, $upath, $query, undef) = # ignore fragment
425	$url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:(\?[^#]*))?(?:#(.*))?|;	718	$url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:(\?[^#]*))?(?:#(.*))?|;
426		719
427	$uscheme = lc $uscheme;	720	$uscheme = lc $uscheme;
428		721
429	my $uport = $uscheme eq "http" ? 80	722	my $uport = $uscheme eq "http" ? 80
…		…
431	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });	724	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
432		725
433	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	726	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
434	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });	727	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
435		728
436	my $uhost = $1;	729	my $uhost = lc $1;
437	$uport = $2 if defined $2;	730	$uport = $2 if defined $2;
438		731
439	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	732	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
440	unless exists $hdr{host};	733	unless exists $hdr{host};
441		734
…		…
444		737
445	$upath =~ s%^/?%/%;	738	$upath =~ s%^/?%/%;
446		739
447	# cookie processing	740	# cookie processing
448	if (my $jar = $arg{cookie_jar}) {	741	if (my $jar = $arg{cookie_jar}) {
449	%$jar = () if $jar->{version} != 1;	742	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
450		743
451	my @cookie;
452
453	while (my ($chost, $v) = each %$jar) {
454	if ($chost =~ /^\./) {
455	next unless $chost eq substr $uhost, -length $chost;
456	} elsif ($chost =~ /\./) {
457	next unless $chost eq $uhost;
458	} else {
459	next;
460	}
461
462	while (my ($cpath, $v) = each %$v) {
463	next unless $cpath eq substr $upath, 0, length $cpath;
464
465	while (my ($k, $v) = each %$v) {
466	next if $uscheme ne "https" && exists $v->{secure};
467	my $value = $v->{value};
468	$value =~ s/([\\"])/\\$1/g;
469	push @cookie, "$k=\"$value\"";
470	}
471	}
472	}
473
474	$hdr{cookie} = join "; ", @cookie	744	$hdr{cookie} = join "; ", @$cookies
475	if @cookie;	745	if @$cookies;
476	}	746	}
477		747
478	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	748	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
479		749
480	if ($proxy) {	750	if ($proxy) {
…		…
483	$rscheme = "http" unless defined $rscheme;	753	$rscheme = "http" unless defined $rscheme;
484		754
485	# don't support https requests over https-proxy transport,	755	# don't support https requests over https-proxy transport,
486	# can't be done with tls as spec'ed, unless you double-encrypt.	756	# can't be done with tls as spec'ed, unless you double-encrypt.
487	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	757	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
		758
		759	$rhost = lc $rhost;
		760	$rscheme = lc $rscheme;
488	} else {	761	} else {
489	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	762	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
490	}	763	}
491		764
492	# leave out fragment and query string, just a heuristic	765	# leave out fragment and query string, just a heuristic
…		…
494	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};	767	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
495		768
496	$hdr{"content-length"} = length $arg{body}	769	$hdr{"content-length"} = length $arg{body}
497	if length $arg{body} || $method ne "GET";	770	if length $arg{body} || $method ne "GET";
498		771
499	$hdr{connection} = "close TE"; #1.1	772	my $idempotent = $method =~ /^(?:GET|HEAD|PUT|DELETE|OPTIONS|TRACE)$/;
		773
		774	# default value for keepalive is true iff the request is for an idempotent method
		775	my $keepalive = exists $arg{keepalive} ? !!$arg{keepalive} : $idempotent;
		776	my $keepalive10 = exists $arg{keepalive10} ? $arg{keepalive10} : !$proxy;
		777	my $keptalive; # true if this is actually a recycled connection
		778
		779	# the key to use in the keepalive cache
		780	my $ka_key = "$uhost\x00$arg{sessionid}";
		781
		782	$hdr{connection} = ($keepalive ? $keepalive10 ? "keep-alive " : "" : "close ") . "Te"; #1.1
500	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1	783	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
501		784
502	my %state = (connect_guard => 1);	785	my %state = (connect_guard => 1);
		786
		787	my $ae_error = 595; # connecting
		788
		789	# handle actual, non-tunneled, request
		790	my $handle_actual_request = sub {
		791	$ae_error = 596; # request phase
		792
		793	my $hdl = $state{handle};
		794
		795	$hdl->starttls ("connect") if $uscheme eq "https" && !exists $hdl->{tls};
		796
		797	# send request
		798	$hdl->push_write (
		799	"$method $rpath HTTP/1.1\015\012"
		800	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
		801	. "\015\012"
		802	. (delete $arg{body})
		803	);
		804
		805	# return if error occured during push_write()
		806	return unless %state;
		807
		808	# reduce memory usage, save a kitten, also re-use it for the response headers.
		809	%hdr = ();
		810
		811	# status line and headers
		812	$state{read_response} = sub {
		813	return unless %state;
		814
		815	for ("$_[1]") {
		816	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		817
		818	/^HTTP\/0*([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/gxci
		819	or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid server response" };
		820
		821	# 100 Continue handling
		822	# should not happen as we don't send expect: 100-continue,
		823	# but we handle it just in case.
		824	# since we send the request body regardless, if we get an error
		825	# we are out of-sync, which we currently do NOT handle correctly.
		826	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		827	if $2 eq 100;
		828
		829	push @pseudo,
		830	HTTPVersion => $1,
		831	Status => $2,
		832	Reason => $3,
		833	;
		834
		835	my $hdr = _parse_hdr
		836	or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Garbled response headers" };
		837
		838	%hdr = (%$hdr, @pseudo);
		839	}
		840
		841	# redirect handling
		842	# microsoft and other shitheads don't give a shit for following standards,
		843	# try to support some common forms of broken Location headers.
		844	if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
		845	$hdr{location} =~ s/^\.\/+//;
		846
		847	my $url = "$rscheme://$uhost:$uport";
		848
		849	unless ($hdr{location} =~ s/^\///) {
		850	$url .= $upath;
		851	$url =~ s/\/[^\/]*$//;
		852	}
		853
		854	$hdr{location} = "$url/$hdr{location}";
		855	}
		856
		857	my $redirect;
		858
		859	if ($recurse) {
		860	my $status = $hdr{Status};
		861
		862	# industry standard is to redirect POST as GET for
		863	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		864	# also, the UA should ask the user for 301 and 307 and POST,
		865	# industry standard seems to be to simply follow.
		866	# we go with the industry standard.
		867	if ($status == 301 or $status == 302 or $status == 303) {
		868	# HTTP/1.1 is unclear on how to mutate the method
		869	$method = "GET" unless $method eq "HEAD";
		870	$redirect = 1;
		871	} elsif ($status == 307) {
		872	$redirect = 1;
		873	}
		874	}
		875
		876	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		877	if ($state{handle}) {
		878	# handle keepalive
		879	if (
		880	$keepalive
		881	&& $_[3]
		882	&& ($hdr{HTTPVersion} < 1.1
		883	? $hdr{connection} =~ /\bkeep-?alive\b/i
		884	: $hdr{connection} !~ /\bclose\b/i)
		885	) {
		886	ka_store $ka_key, delete $state{handle};
		887	} else {
		888	# no keepalive, destroy the handle
		889	$state{handle}->destroy;
		890	}
		891	}
		892
		893	%state = ();
		894
		895	if (defined $_[1]) {
		896	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		897	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		898	}
		899
		900	# set-cookie processing
		901	if ($arg{cookie_jar}) {
		902	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
		903	}
		904
		905	if ($redirect && exists $hdr{location}) {
		906	# we ignore any errors, as it is very common to receive
		907	# Content-Length != 0 but no actual body
		908	# we also access %hdr, as $_[1] might be an erro
		909	http_request (
		910	$method => $hdr{location},
		911	%arg,
		912	recurse => $recurse - 1,
		913	Redirect => [$_[0], \%hdr],
		914	$cb
		915	);
		916	} else {
		917	$cb->($_[0], \%hdr);
		918	}
		919	};
		920
		921	$ae_error = 597; # body phase
		922
		923	my $chunked = $hdr{"transfer-encoding"} =~ /\bchunked\b/i; # not quite correct...
		924
		925	my $len = $chunked ? undef : $hdr{"content-length"};
		926
		927	# body handling, many different code paths
		928	# - no body expected
		929	# - want_body_handle
		930	# - te chunked
		931	# - 2x length known (with or without on_body)
		932	# - 2x length not known (with or without on_body)
		933	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		934	$finish->(undef, 598 => "Request cancelled by on_header");
		935	} elsif (
		936	$hdr{Status} =~ /^(?:1..|204|205|304)$/
		937	or $method eq "HEAD"
		938	or (defined $len && $len == 0) # == 0, not !, because "0 " is true
		939	) {
		940	# no body
		941	$finish->("", undef, undef, 1);
		942
		943	} elsif (!$redirect && $arg{want_body_handle}) {
		944	$_[0]->on_eof (undef);
		945	$_[0]->on_error (undef);
		946	$_[0]->on_read (undef);
		947
		948	$finish->(delete $state{handle});
		949
		950	} elsif ($chunked) {
		951	my $cl = 0;
		952	my $body = "";
		953	my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
		954
		955	$state{read_chunk} = sub {
		956	$_[1] =~ /^([0-9a-fA-F]+)/
		957	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		958
		959	my $len = hex $1;
		960
		961	if ($len) {
		962	$cl += $len;
		963
		964	$_[0]->push_read (chunk => $len, sub {
		965	$on_body->($_[1], \%hdr)
		966	or return $finish->(undef, 598 => "Request cancelled by on_body");
		967
		968	$_[0]->push_read (line => sub {
		969	length $_[1]
		970	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		971	$_[0]->push_read (line => $state{read_chunk});
		972	});
		973	});
		974	} else {
		975	$hdr{"content-length"} ||= $cl;
		976
		977	$_[0]->push_read (line => $qr_nlnl, sub {
		978	if (length $_[1]) {
		979	for ("$_[1]") {
		980	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		981
		982	my $hdr = _parse_hdr
		983	or return $finish->(undef, $ae_error => "Garbled response trailers");
		984
		985	%hdr = (%hdr, %$hdr);
		986	}
		987	}
		988
		989	$finish->($body, undef, undef, 1);
		990	});
		991	}
		992	};
		993
		994	$_[0]->push_read (line => $state{read_chunk});
		995
		996	} elsif ($arg{on_body}) {
		997	if (defined $len) {
		998	$_[0]->on_read (sub {
		999	$len -= length $_[0]{rbuf};
		1000
		1001	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		1002	or return $finish->(undef, 598 => "Request cancelled by on_body");
		1003
		1004	$len > 0
		1005	or $finish->("", undef, undef, 1);
		1006	});
		1007	} else {
		1008	$_[0]->on_eof (sub {
		1009	$finish->("");
		1010	});
		1011	$_[0]->on_read (sub {
		1012	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		1013	or $finish->(undef, 598 => "Request cancelled by on_body");
		1014	});
		1015	}
		1016	} else {
		1017	$_[0]->on_eof (undef);
		1018
		1019	if (defined $len) {
		1020	$_[0]->on_read (sub {
		1021	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		1022	if $len <= length $_[0]{rbuf};
		1023	});
		1024	} else {
		1025	$_[0]->on_error (sub {
		1026	($! == Errno::EPIPE || !$!)
		1027	? $finish->(delete $_[0]{rbuf})
		1028	: $finish->(undef, $ae_error => $_[2]);
		1029	});
		1030	$_[0]->on_read (sub { });
		1031	}
		1032	}
		1033	};
		1034
		1035	# if keepalive is enabled, then the server closing the connection
		1036	# before a response can happen legally - we retry on idempotent methods.
		1037	if ($keptalive && $idempotent) {
		1038	my $old_eof = $hdl->{on_eof};
		1039	$hdl->{on_eof} = sub {
		1040	_destroy_state %state;
		1041
		1042	http_request (
		1043	$method => $url,
		1044	%arg,
		1045	keepalive => 0,
		1046	$cb
		1047	);
		1048	};
		1049	$hdl->on_read (sub {
		1050	return unless %state;
		1051
		1052	# as soon as we receive something, a connection close
		1053	# once more becomes a hard error
		1054	$hdl->{on_eof} = $old_eof;
		1055	$hdl->push_read (line => $qr_nlnl, $state{read_response});
		1056	});
		1057	} else {
		1058	$hdl->push_read (line => $qr_nlnl, $state{read_response});
		1059	}
		1060	};
		1061
		1062	my $prepare_handle = sub {
		1063	my ($hdl) = $state{handle};
		1064
		1065	$hdl->timeout ($timeout);
		1066	$hdl->on_error (sub {
		1067	_error %state, $cb, { @pseudo, Status => $ae_error, Reason => $_[2] };
		1068	});
		1069	$hdl->on_eof (sub {
		1070	_error %state, $cb, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" };
		1071	});
		1072	};
		1073
		1074	# connected to proxy (or origin server)
		1075	my $connect_cb = sub {
		1076	my $fh = shift
		1077	or return _error %state, $cb, { @pseudo, Status => $ae_error, Reason => "$!" };
		1078
		1079	return unless delete $state{connect_guard};
		1080
		1081	# get handle
		1082	$state{handle} = new AnyEvent::Handle
		1083	%{ $arg{handle_params} },
		1084	fh => $fh,
		1085	peername => $uhost,
		1086	tls_ctx => $arg{tls_ctx},
		1087	;
		1088
		1089	$prepare_handle->();
		1090
		1091	#$state{handle}->starttls ("connect") if $rscheme eq "https";
		1092
		1093	# now handle proxy-CONNECT method
		1094	if ($proxy && $uscheme eq "https") {
		1095	# oh dear, we have to wrap it into a connect request
		1096
		1097	# maybe re-use $uauthority with patched port?
		1098	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012");
		1099	$state{handle}->push_read (line => $qr_nlnl, sub {
		1100	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		1101	or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" };
		1102
		1103	if ($2 == 200) {
		1104	$rpath = $upath;
		1105	$handle_actual_request->();
		1106	} else {
		1107	_error %state, $cb, { @pseudo, Status => $2, Reason => $3 };
		1108	}
		1109	});
		1110	} else {
		1111	$handle_actual_request->();
		1112	}
		1113	};
503		1114
504	_get_slot $uhost, sub {	1115	_get_slot $uhost, sub {
505	$state{slot_guard} = shift;	1116	$state{slot_guard} = shift;
506		1117
507	return unless $state{connect_guard};	1118	return unless $state{connect_guard};
508		1119
509	my $connect_cb = sub {	1120	# try to use an existing keepalive connection, but only if we, ourselves, plan
510	$state{fh} = shift	1121	# on a keepalive request (in theory, this should be a separate config option).
511	or do {	1122	if ($keepalive && $KA_CACHE{$ka_key}) {
512	my $err = "$!";	1123	$keptalive = 1;
513	%state = ();	1124	$state{handle} = ka_fetch $ka_key;
514	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });	1125	$prepare_handle->();
515	};
516
517	pop; # free memory, save a tree
518
519	return unless delete $state{connect_guard};
520
521	# get handle
522	$state{handle} = new AnyEvent::Handle
523	fh => $state{fh},
524	peername => $rhost,
525	tls_ctx => $arg{tls_ctx},
526	# these need to be reconfigured on keepalive handles
527	timeout => $timeout,
528	on_error => sub {
529	%state = ();
530	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
531	},
532	on_eof => sub {
533	%state = ();
534	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
535	},
536	;
537
538	# limit the number of persistent connections
539	# keepalive not yet supported
540	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
541	# ++$KA_COUNT{$_[1]};
542	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
543	# --$KA_COUNT{$_[1]}
544	# };
545	# $hdr{connection} = "keep-alive";
546	# }
547
548	$state{handle}->starttls ("connect") if $rscheme eq "https";
549
550	# handle actual, non-tunneled, request
551	my $handle_actual_request = sub {
552	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
553
554	# send request
555	$state{handle}->push_write (
556	"$method $rpath HTTP/1.1\015\012"
557	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
558	. "\015\012"
559	. (delete $arg{body})
560	);
561
562	# return if error occured during push_write()
563	return unless %state;
564
565	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
566
567	# status line and headers
568	$state{read_response} = sub {
569	for ("$_[1]") {
570	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
571
572	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
573	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
574
575	# 100 Continue handling
576	# should not happen as we don't send expect: 100-continue,
577	# but we handle it just in case.
578	# since we send the request body regardless, if we get an error
579	# we are out of-sync, which we currently do NOT handle correctly.
580	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
581	if $2 eq 100;
582
583	push @pseudo,
584	HTTPVersion => $1,
585	Status => $2,
586	Reason => $3,
587	;
588
589	my $hdr = parse_hdr
590	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
591
592	%hdr = (%$hdr, @pseudo);
593	}
594
595	# redirect handling
596	# microsoft and other shitheads don't give a shit for following standards,
597	# try to support some common forms of broken Location headers.
598	if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
599	$hdr{location} =~ s/^\.\/+//;
600
601	my $url = "$rscheme://$uhost:$uport";
602
603	unless ($hdr{location} =~ s/^\///) {
604	$url .= $upath;
605	$url =~ s/\/[^\/]*$//;
606	}
607
608	$hdr{location} = "$url/$hdr{location}";
609	}
610
611	my $redirect;
612
613	if ($recurse) {
614	my $status = $hdr{Status};
615
616	# industry standard is to redirect POST as GET for
617	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
618	# also, the UA should ask the user for 301 and 307 and POST,
619	# industry standard seems to be to simply follow.
620	# we go with the industry standard.
621	if ($status == 301 or $status == 302 or $status == 303) {
622	# HTTP/1.1 is unclear on how to mutate the method
623	$method = "GET" unless $method eq "HEAD";
624	$redirect = 1;
625	} elsif ($status == 307) {
626	$redirect = 1;
627	}
628	}
629
630	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
631	my $keepalive = pop;
632
633	$state{handle}->destroy if $state{handle};
634	%state = ();
635
636	if (defined $_[1]) {
637	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
638	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
639	}
640
641	# set-cookie processing
642	if ($arg{cookie_jar}) {
643	for ($hdr{"set-cookie"}) {
644	# parse NAME=VALUE
645	my @kv;
646
647	while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
648	my $name = $1;
649	my $value = $3;
650
651	unless ($value) {
652	$value = $2;
653	$value =~ s/\\(.)/$1/gs;
654	}
655
656	push @kv, $name => $value;
657
658	last unless /\G\s*;/gc;
659	}
660
661	last unless @kv;
662
663	my $name = shift @kv;
664	my %kv = (value => shift @kv, @kv);
665
666	my $cdom;
667	my $cpath = (delete $kv{path}) || "/";
668
669	if (exists $kv{domain}) {
670	$cdom = delete $kv{domain};
671
672	$cdom =~ s/^\.?/./; # make sure it starts with a "."
673
674	next if $cdom =~ /\.$/;
675
676	# this is not rfc-like and not netscape-like. go figure.
677	my $ndots = $cdom =~ y/.//;
678	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
679	} else {
680	$cdom = $uhost;
681	}
682
683	# store it
684	$arg{cookie_jar}{version} = 1;
685	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
686
687	redo if /\G\s*,/gc;
688	}
689	}
690
691	if ($redirect && exists $hdr{location}) {
692	# we ignore any errors, as it is very common to receive
693	# Content-Length != 0 but no actual body
694	# we also access %hdr, as $_[1] might be an erro
695	http_request (
696	$method => $hdr{location},
697	%arg,
698	recurse => $recurse - 1,
699	Redirect => [$_[0], \%hdr],
700	$cb);
701	} else {
702	$cb->($_[0], \%hdr);
703	}
704	};
705
706	my $len = $hdr{"content-length"};
707
708	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
709	$finish->(undef, 598 => "Request cancelled by on_header");
710	} elsif (
711	$hdr{Status} =~ /^(?:1..|204|205|304)$/
712	or $method eq "HEAD"
713	or (defined $len && !$len)
714	) {
715	# no body
716	$finish->("", undef, undef, 1);
717	} else {
718	# body handling, many different code paths
719	# - no body expected
720	# - want_body_handle
721	# - te chunked
722	# - 2x length known (with or without on_body)
723	# - 2x length not known (with or without on_body)
724	if (!$redirect && $arg{want_body_handle}) {
725	$_[0]->on_eof (undef);
726	$_[0]->on_error (undef);
727	$_[0]->on_read (undef);
728
729	$finish->(delete $state{handle});
730
731	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
732	my $cl = 0;
733	my $body = undef;
734	my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
735
736	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
737
738	my $read_chunk; $read_chunk = sub {
739	$_[1] =~ /^([0-9a-fA-F]+)/
740	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
741
742	my $len = hex $1;
743
744	if ($len) {
745	$cl += $len;
746
747	$_[0]->push_read (chunk => $len, sub {
748	$on_body->($_[1], \%hdr)
749	or return $finish->(undef, 598 => "Request cancelled by on_body");
750
751	$_[0]->push_read (line => sub {
752	length $_[1]
753	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
754	$_[0]->push_read (line => $read_chunk);
755	});
756	});
757	} else {
758	$hdr{"content-length"} ||= $cl;
759
760	$_[0]->push_read (line => $qr_nlnl, sub {
761	if (length $_[1]) {
762	for ("$_[1]") {
763	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
764
765	my $hdr = parse_hdr
766	or return $finish->(undef, 599 => "Garbled response trailers");
767
768	%hdr = (%hdr, %$hdr);
769	}
770	}
771
772	$finish->($body, undef, undef, 1);
773	});
774	}
775	};
776
777	$_[0]->push_read (line => $read_chunk);
778
779	} elsif ($arg{on_body}) {
780	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
781
782	if ($len) {
783	$_[0]->on_read (sub {
784	$len -= length $_[0]{rbuf};
785
786	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
787	or return $finish->(undef, 598 => "Request cancelled by on_body");
788
789	$len > 0
790	or $finish->("", undef, undef, 1);
791	});
792	} else {
793	$_[0]->on_eof (sub {
794	$finish->("");
795	});
796	$_[0]->on_read (sub {
797	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
798	or $finish->(undef, 598 => "Request cancelled by on_body");
799	});
800	}
801	} else {
802	$_[0]->on_eof (undef);
803
804	if ($len) {
805	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
806	$_[0]->on_read (sub {
807	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
808	if $len <= length $_[0]{rbuf};
809	});
810	} else {
811	$_[0]->on_error (sub {
812	($! == Errno::EPIPE || !$!)
813	? $finish->(delete $_[0]{rbuf})
814	: $finish->(undef, 599 => $_[2]);
815	});
816	$_[0]->on_read (sub { });
817	}
818	}
819	}
820	};
821
822	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
823	};
824
825	# now handle proxy-CONNECT method
826	if ($proxy && $uscheme eq "https") {
827	# oh dear, we have to wrap it into a connect request
828
829	# maybe re-use $uauthority with patched port?
830	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
831	$state{handle}->push_read (line => $qr_nlnl, sub {
832	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
833	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
834
835	if ($2 == 200) {
836	$rpath = $upath;
837	&$handle_actual_request;	1126	$handle_actual_request->();
838	} else {	1127
839	%state = ();
840	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
841	}
842	});
843	} else {	1128	} else {
844	&$handle_actual_request;
845	}
846	};
847
848	my $tcp_connect = $arg{tcp_connect}	1129	my $tcp_connect = $arg{tcp_connect}
849	|| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };	1130	|| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
850		1131
851	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout });	1132	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout });
852		1133	}
853	};	1134	};
854		1135
855	defined wantarray && AnyEvent::Util::guard { %state = () }	1136	defined wantarray && AnyEvent::Util::guard { _destroy_state %state }
856	}	1137	}
857		1138
858	sub http_get($@) {	1139	sub http_get($@) {
859	unshift @_, "GET";	1140	unshift @_, "GET";
860	&http_request	1141	&http_request
…		…
878	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for	1159	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
879	the actual connection, which in turn uses AnyEvent::DNS to resolve	1160	the actual connection, which in turn uses AnyEvent::DNS to resolve
880	hostnames. The latter is a simple stub resolver and does no caching	1161	hostnames. The latter is a simple stub resolver and does no caching
881	on its own. If you want DNS caching, you currently have to provide	1162	on its own. If you want DNS caching, you currently have to provide
882	your own default resolver (by storing a suitable resolver object in	1163	your own default resolver (by storing a suitable resolver object in
883	C<$AnyEvent::DNS::RESOLVER>).	1164	C<$AnyEvent::DNS::RESOLVER>) or your own C<tcp_connect> callback.
884		1165
885	=head2 GLOBAL FUNCTIONS AND VARIABLES	1166	=head2 GLOBAL FUNCTIONS AND VARIABLES
886		1167
887	=over 4	1168	=over 4
888		1169
889	=item AnyEvent::HTTP::set_proxy "proxy-url"	1170	=item AnyEvent::HTTP::set_proxy "proxy-url"
890		1171
891	Sets the default proxy server to use. The proxy-url must begin with a	1172	Sets the default proxy server to use. The proxy-url must begin with a
892	string of the form C<http://host:port> (optionally C<https:...>), croaks	1173	string of the form C<http://host:port>, croaks otherwise.
893	otherwise.
894		1174
895	To clear an already-set proxy, use C<undef>.	1175	To clear an already-set proxy, use C<undef>.
		1176
		1177	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
		1178
		1179	Remove all cookies from the cookie jar that have been expired. If
		1180	C<$session_end> is given and true, then additionally remove all session
		1181	cookies.
		1182
		1183	You should call this function (with a true C<$session_end>) before you
		1184	save cookies to disk, and you should call this function after loading them
		1185	again. If you have a long-running program you can additonally call this
		1186	function from time to time.
		1187
		1188	A cookie jar is initially an empty hash-reference that is managed by this
		1189	module. It's format is subject to change, but currently it is like this:
		1190
		1191	The key C<version> has to contain C<1>, otherwise the hash gets
		1192	emptied. All other keys are hostnames or IP addresses pointing to
		1193	hash-references. The key for these inner hash references is the
		1194	server path for which this cookie is meant, and the values are again
		1195	hash-references. The keys of those hash-references is the cookie name, and
		1196	the value, you guessed it, is another hash-reference, this time with the
		1197	key-value pairs from the cookie, except for C<expires> and C<max-age>,
		1198	which have been replaced by a C<_expires> key that contains the cookie
		1199	expiry timestamp.
		1200
		1201	Here is an example of a cookie jar with a single cookie, so you have a
		1202	chance of understanding the above paragraph:
		1203
		1204	{
		1205	version => 1,
		1206	"10.0.0.1" => {
		1207	"/" => {
		1208	"mythweb_id" => {
		1209	_expires => 1293917923,
		1210	value => "ooRung9dThee3ooyXooM1Ohm",
		1211	},
		1212	},
		1213	},
		1214	}
896		1215
897	=item $date = AnyEvent::HTTP::format_date $timestamp	1216	=item $date = AnyEvent::HTTP::format_date $timestamp
898		1217
899	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP	1218	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
900	Date (RFC 2616).	1219	Date (RFC 2616).
901		1220
902	=item $timestamp = AnyEvent::HTTP::parse_date $date	1221	=item $timestamp = AnyEvent::HTTP::parse_date $date
903		1222
904	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX	1223	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		1224	bunch of minor variations of those, and returns the corresponding POSIX
905	timestamp, or C<undef> if the date cannot be parsed.	1225	timestamp, or C<undef> if the date cannot be parsed.
906		1226
907	=item $AnyEvent::HTTP::MAX_RECURSE	1227	=item $AnyEvent::HTTP::MAX_RECURSE
908		1228
909	The default value for the C<recurse> request parameter (default: C<10>).	1229	The default value for the C<recurse> request parameter (default: C<10>).
		1230
		1231	=item $AnyEvent::HTTP::TIMEOUT
		1232
		1233	The default timeout for conenction operations (default: C<300>).
910		1234
911	=item $AnyEvent::HTTP::USERAGENT	1235	=item $AnyEvent::HTTP::USERAGENT
912		1236
913	The default value for the C<User-Agent> header (the default is	1237	The default value for the C<User-Agent> header (the default is
914	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	1238	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
915		1239
916	=item $AnyEvent::HTTP::MAX_PER_HOST	1240	=item $AnyEvent::HTTP::MAX_PER_HOST
917		1241
918	The maximum number of concurrent connections to the same host (identified	1242	The maximum number of concurrent connections to the same host (identified
919	by the hostname). If the limit is exceeded, then the additional requests	1243	by the hostname). If the limit is exceeded, then the additional requests
920	are queued until previous connections are closed.	1244	are queued until previous connections are closed. Both persistent and
		1245	non-persistent connections are counted in this limit.
921		1246
922	The default value for this is C<4>, and it is highly advisable to not	1247	The default value for this is C<4>, and it is highly advisable to not
923	increase it.	1248	increase it much.
		1249
		1250	For comparison: the RFC's recommend 4 non-persistent or 2 persistent
		1251	connections, older browsers used 2, newers (such as firefox 3) typically
		1252	use 6, and Opera uses 8 because like, they have the fastest browser and
		1253	give a shit for everybody else on the planet.
		1254
		1255	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
		1256
		1257	The time after which idle persistent conenctions get closed by
		1258	AnyEvent::HTTP (default: C<3>).
924		1259
925	=item $AnyEvent::HTTP::ACTIVE	1260	=item $AnyEvent::HTTP::ACTIVE
926		1261
927	The number of active connections. This is not the number of currently	1262	The number of active connections. This is not the number of currently
928	running requests, but the number of currently open and non-idle TCP	1263	running requests, but the number of currently open and non-idle TCP
929	connections. This number of can be useful for load-leveling.	1264	connections. This number can be useful for load-leveling.
930		1265
931	=back	1266	=back
932		1267
933	=cut	1268	=cut
934		1269
…		…
949	sub parse_date($) {	1284	sub parse_date($) {
950	my ($date) = @_;	1285	my ($date) = @_;
951		1286
952	my ($d, $m, $y, $H, $M, $S);	1287	my ($d, $m, $y, $H, $M, $S);
953		1288
954	if ($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$/) {	1289	if ($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$/) {
955	# RFC 822/1123, required by RFC 2616	1290	# RFC 822/1123, required by RFC 2616 (with " ")
		1291	# cookie dates (with "-")
		1292
956	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);	1293	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
957		1294
958	} elsif ($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$/) {	1295	} elsif ($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$/) {
959	# RFC 850	1296	# RFC 850
960	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);	1297	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
961		1298
962	} elsif ($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])$/) {	1299	} elsif ($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])$/) {
963	# ISO C's asctime	1300	# ISO C's asctime
964	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);	1301	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
965	}	1302	}
966	# other formats fail in the loop below	1303	# other formats fail in the loop below
967		1304
…		…
975	undef	1312	undef
976	}	1313	}
977		1314
978	sub set_proxy($) {	1315	sub set_proxy($) {
979	if (length $_[0]) {	1316	if (length $_[0]) {
980	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1317	$_[0] =~ m%^(http):// ([^:/]+) (?: : (\d*) )?%ix
981	or Carp::croak "$_[0]: invalid proxy URL";	1318	or Carp::croak "$_[0]: invalid proxy URL";
982	$PROXY = [$2, $3 || 3128, $1]	1319	$PROXY = [$2, $3 || 3128, $1]
983	} else {	1320	} else {
984	undef $PROXY;	1321	undef $PROXY;
985	}	1322	}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines