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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.88 by root, Sun Jan 2 20:57:03 2011 UTC vs.
Revision 1.119 by root, Sun Jun 8 23:33:28 2014 UTC

…		…
15	This module is an L<AnyEvent> user, you need to make sure that you use and	15	This module is an L<AnyEvent> user, you need to make sure that you use and
16	run a supported event loop.	16	run a supported event loop.
17		17
18	This module implements a simple, stateless and non-blocking HTTP	18	This module implements a simple, stateless and non-blocking HTTP
19	client. It supports GET, POST and other request methods, cookies and more,	19	client. It supports GET, POST and other request methods, cookies and more,
20	all on a very low level. It can follow redirects supports proxies and	20	all on a very low level. It can follow redirects, supports proxies, and
21	automatically limits the number of connections to the values specified in	21	automatically limits the number of connections to the values specified in
22	the RFC.	22	the RFC.
23		23
24	It should generally be a "good client" that is enough for most HTTP	24	It should generally be a "good client" that is enough for most HTTP
25	tasks. Simple tasks should be simple, but complex tasks should still be	25	tasks. Simple tasks should be simple, but complex tasks should still be
…		…
46	use AnyEvent::Util ();	46	use AnyEvent::Util ();
47	use AnyEvent::Handle ();	47	use AnyEvent::Handle ();
48		48
49	use base Exporter::;	49	use base Exporter::;
50		50
51	our $VERSION = '1.5';	51	our $VERSION = 2.2;
52		52
53	our @EXPORT = qw(http_get http_post http_head http_request);	53	our @EXPORT = qw(http_get http_post http_head http_request);
54		54
55	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)";
56	our $MAX_RECURSE = 10;	56	our $MAX_RECURSE = 10;
57	our $MAX_PERSISTENT = 8;
58	our $PERSISTENT_TIMEOUT = 2;	57	our $PERSISTENT_TIMEOUT = 3;
59	our $TIMEOUT = 300;	58	our $TIMEOUT = 300;
60		59	our $MAX_PER_HOST = 4; # changing this is evil
61	# changing these is evil
62	our $MAX_PERSISTENT_PER_HOST = 2;
63	our $MAX_PER_HOST = 4;
64		60
65	our $PROXY;	61	our $PROXY;
66	our $ACTIVE = 0;	62	our $ACTIVE = 0;
67		63
68	my %KA_COUNT; # number of open keep-alive connections per host	64	my %KA_CACHE; # indexed by uhost currently, points to [$handle...] array
69	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
70		66
71	=item http_get $url, key => value..., $cb->($data, $headers)	67	=item http_get $url, key => value..., $cb->($data, $headers)
72		68
73	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
…		…
93	C<http_request> returns a "cancellation guard" - you have to keep the	89	C<http_request> returns a "cancellation guard" - you have to keep the
94	object at least alive until the callback get called. If the object gets	90	object at least alive until the callback get called. If the object gets
95	destroyed before the callback is called, the request will be cancelled.	91	destroyed before the callback is called, the request will be cancelled.
96		92
97	The callback will be called with the response body data as first argument	93	The callback will be called with the response body data as first argument
98	(or C<undef> if an error occured), and a hash-ref with response headers	94	(or C<undef> if an error occurred), and a hash-ref with response headers
99	(and trailers) as second argument.	95	(and trailers) as second argument.
100		96
101	All the headers in that hash are lowercased. In addition to the response	97	All the headers in that hash are lowercased. In addition to the response
102	headers, the "pseudo-headers" (uppercase to avoid clashing with possible	98	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
103	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the	99	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
…		…
127	C<590>-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
128	message. Currently the following status codes are used:	124	message. Currently the following status codes are used:
129		125
130	=over 4	126	=over 4
131		127
132	=item 595 - errors during connection etsbalishment, proxy handshake.	128	=item 595 - errors during connection establishment, proxy handshake.
133		129
134	=item 596 - errors during TLS negotiation, request sending and header processing.	130	=item 596 - errors during TLS negotiation, request sending and header processing.
135		131
136	=item 597 - errors during body receiving or processing.	132	=item 597 - errors during body receiving or processing.
137		133
…		…
158		154
159	=over 4	155	=over 4
160		156
161	=item recurse => $count (default: $MAX_RECURSE)	157	=item recurse => $count (default: $MAX_RECURSE)
162		158
163	Whether to recurse requests or not, e.g. on redirects, authentication	159	Whether to recurse requests or not, e.g. on redirects, authentication and
164	retries and so on, and how often to do so.	160	other retries and so on, and how often to do so.
		161
		162	Only redirects to http and https URLs are supported. While most common
		163	redirection forms are handled entirely within this module, some require
		164	the use of the optional L<URI> module. If it is required but missing, then
		165	the request will fail with an error.
165		166
166	=item headers => hashref	167	=item headers => hashref
167		168
168	The request headers to use. Currently, C<http_request> may provide its own	169	The request headers to use. Currently, C<http_request> may provide its own
169	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
170	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
171	(this can be suppressed by using C<undef> for these headers in which case	172	(this can be suppressed by using C<undef> for these headers in which case
172	they won't be sent at all).	173	they won't be sent at all).
173		174
		175	You really should provide your own C<User-Agent:> header value that is
		176	appropriate for your program - I wouldn't be surprised if the default
		177	AnyEvent string gets blocked by webservers sooner or later.
		178
		179	Also, make sure that your headers names and values do not contain any
		180	embedded newlines.
		181
174	=item timeout => $seconds	182	=item timeout => $seconds
175		183
176	The time-out to use for various stages - each connect attempt will reset	184	The time-out to use for various stages - each connect attempt will reset
177	the timeout, as will read or write activity, i.e. this is not an overall	185	the timeout, as will read or write activity, i.e. this is not an overall
178	timeout.	186	timeout.
179		187
180	Default timeout is 5 minutes.	188	Default timeout is 5 minutes.
181		189
182	=item proxy => [$host, $port[, $scheme]] or undef	190	=item proxy => [$host, $port[, $scheme]] or undef
183		191
184	Use the given http proxy for all requests. If not specified, then the	192	Use the given http proxy for all requests, or no proxy if C<undef> is
185	default proxy (as specified by C<$ENV{http_proxy}>) is used.	193	used.
186		194
187	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	195	C<$scheme> must be either missing or must be C<http> for HTTP.
188	HTTPS.	196
		197	If not specified, then the default proxy is used (see
		198	C<AnyEvent::HTTP::set_proxy>).
189		199
190	=item body => $string	200	=item body => $string
191		201
192	The request body, usually empty. Will be sent as-is (future versions of	202	The request body, usually empty. Will be sent as-is (future versions of
193	this module might offer more options).	203	this module might offer more options).
…		…
224	verification) TLS context.	234	verification) TLS context.
225		235
226	The default for this option is C<low>, which could be interpreted as "give	236	The default for this option is C<low>, which could be interpreted as "give
227	me the page, no matter what".	237	me the page, no matter what".
228		238
		239	See also the C<sessionid> parameter.
		240
		241	=item session => $string
		242
		243	The module might reuse connections to the same host internally. Sometimes
		244	(e.g. when using TLS), you do not want to reuse connections from other
		245	sessions. This can be achieved by setting this parameter to some unique
		246	ID (such as the address of an object storing your state data, or the TLS
		247	context) - only connections using the same unique ID will be reused.
		248
229	=item on_prepare => $callback->($fh)	249	=item on_prepare => $callback->($fh)
230		250
231	In rare cases you need to "tune" the socket before it is used to	251	In rare cases you need to "tune" the socket before it is used to
232	connect (for exmaple, to bind it on a given IP address). This parameter	252	connect (for example, to bind it on a given IP address). This parameter
233	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>	253	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
234	and behaves exactly the same way (e.g. it has to provide a	254	and behaves exactly the same way (e.g. it has to provide a
235	timeout). See the description for the C<$prepare_cb> argument of	255	timeout). See the description for the C<$prepare_cb> argument of
236	C<AnyEvent::Socket::tcp_connect> for details.	256	C<AnyEvent::Socket::tcp_connect> for details.
237		257
…		…
302	called. Instead of the C<$body> argument containing the body data, the	322	called. Instead of the C<$body> argument containing the body data, the
303	callback will receive the L<AnyEvent::Handle> object associated with the	323	callback will receive the L<AnyEvent::Handle> object associated with the
304	connection. In error cases, C<undef> will be passed. When there is no body	324	connection. In error cases, C<undef> will be passed. When there is no body
305	(e.g. status C<304>), the empty string will be passed.	325	(e.g. status C<304>), the empty string will be passed.
306		326
307	The handle object might or might not be in TLS mode, might be connected to	327	The handle object might or might not be in TLS mode, might be connected
308	a proxy, be a persistent connection etc., and configured in unspecified	328	to a proxy, be a persistent connection, use chunked transfer encoding
309	ways. The user is responsible for this handle (it will not be used by this	329	etc., and configured in unspecified ways. The user is responsible for this
310	module anymore).	330	handle (it will not be used by this module anymore).
311		331
312	This is useful with some push-type services, where, after the initial	332	This is useful with some push-type services, where, after the initial
313	headers, an interactive protocol is used (typical example would be the	333	headers, an interactive protocol is used (typical example would be the
314	push-style twitter API which starts a JSON/XML stream).	334	push-style twitter API which starts a JSON/XML stream).
315		335
316	If you think you need this, first have a look at C<on_body>, to see if	336	If you think you need this, first have a look at C<on_body>, to see if
317	that doesn't solve your problem in a better way.	337	that doesn't solve your problem in a better way.
		338
		339	=item persistent => $boolean
		340
		341	Try to create/reuse a persistent connection. When this flag is set
		342	(default: true for idempotent requests, false for all others), then
		343	C<http_request> tries to re-use an existing (previously-created)
		344	persistent connection to the host and, failing that, tries to create a new
		345	one.
		346
		347	Requests failing in certain ways will be automatically retried once, which
		348	is dangerous for non-idempotent requests, which is why it defaults to off
		349	for them. The reason for this is because the bozos who designed HTTP/1.1
		350	made it impossible to distinguish between a fatal error and a normal
		351	connection timeout, so you never know whether there was a problem with
		352	your request or not.
		353
		354	When reusing an existent connection, many parameters (such as TLS context)
		355	will be ignored. See the C<session> parameter for a workaround.
		356
		357	=item keepalive => $boolean
		358
		359	Only used when C<persistent> is also true. This parameter decides whether
		360	C<http_request> tries to handshake a HTTP/1.0-style keep-alive connection
		361	(as opposed to only a HTTP/1.1 persistent connection).
		362
		363	The default is true, except when using a proxy, in which case it defaults
		364	to false, as HTTP/1.0 proxies cannot support this in a meaningful way.
		365
		366	=item handle_params => { key => value ... }
		367
		368	The key-value pairs in this hash will be passed to any L<AnyEvent::Handle>
		369	constructor that is called - not all requests will create a handle, and
		370	sometimes more than one is created, so this parameter is only good for
		371	setting hints.
		372
		373	Example: set the maximum read size to 4096, to potentially conserve memory
		374	at the cost of speed.
		375
		376	handle_params => {
		377	max_read_size => 4096,
		378	},
318		379
319	=back	380	=back
320		381
321	Example: do a simple HTTP GET request for http://www.nethype.de/ and print	382	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
322	the response body.	383	the response body.
…		…
328		389
329	Example: do a HTTP HEAD request on https://www.google.com/, use a	390	Example: do a HTTP HEAD request on https://www.google.com/, use a
330	timeout of 30 seconds.	391	timeout of 30 seconds.
331		392
332	http_request	393	http_request
333	GET => "https://www.google.com",	394	HEAD => "https://www.google.com",
		395	headers => { "user-agent" => "MySearchClient 1.0" },
334	timeout => 30,	396	timeout => 30,
335	sub {	397	sub {
336	my ($body, $hdr) = @_;	398	my ($body, $hdr) = @_;
337	use Data::Dumper;	399	use Data::Dumper;
338	print Dumper $hdr;	400	print Dumper $hdr;
…		…
348	};	410	};
349		411
350	undef $request;	412	undef $request;
351		413
352	=cut	414	=cut
		415
		416	#############################################################################
		417	# wait queue/slots
353		418
354	sub _slot_schedule;	419	sub _slot_schedule;
355	sub _slot_schedule($) {	420	sub _slot_schedule($) {
356	my $host = shift;	421	my $host = shift;
357		422
…		…
380		445
381	_slot_schedule $_[0];	446	_slot_schedule $_[0];
382	}	447	}
383		448
384	#############################################################################	449	#############################################################################
		450	# cookie handling
385		451
386	# expire cookies	452	# expire cookies
387	sub cookie_jar_expire($;$) {	453	sub cookie_jar_expire($;$) {
388	my ($jar, $session_end) = @_;	454	my ($jar, $session_end) = @_;
389		455
…		…
413	}	479	}
414	}	480	}
415		481
416	# extract cookies from jar	482	# extract cookies from jar
417	sub cookie_jar_extract($$$$) {	483	sub cookie_jar_extract($$$$) {
418	my ($jar, $uscheme, $uhost, $upath) = @_;	484	my ($jar, $scheme, $host, $path) = @_;
419		485
420	%$jar = () if $jar->{version} != 1;	486	%$jar = () if $jar->{version} != 1;
421		487
422	my @cookies;	488	my @cookies;
423		489
424	while (my ($chost, $paths) = each %$jar) {	490	while (my ($chost, $paths) = each %$jar) {
425	next unless ref $paths;	491	next unless ref $paths;
426		492
427	if ($chost =~ /^\./) {	493	if ($chost =~ /^\./) {
428	next unless $chost eq substr $uhost, -length $chost;	494	next unless $chost eq substr $host, -length $chost;
429	} elsif ($chost =~ /\./) {	495	} elsif ($chost =~ /\./) {
430	next unless $chost eq $uhost;	496	next unless $chost eq $host;
431	} else {	497	} else {
432	next;	498	next;
433	}	499	}
434		500
435	while (my ($cpath, $cookies) = each %$paths) {	501	while (my ($cpath, $cookies) = each %$paths) {
436	next unless $cpath eq substr $upath, 0, length $cpath;	502	next unless $cpath eq substr $path, 0, length $cpath;
437		503
438	while (my ($cookie, $kv) = each %$cookies) {	504	while (my ($cookie, $kv) = each %$cookies) {
439	next if $uscheme ne "https" && exists $kv->{secure};	505	next if $scheme ne "https" && exists $kv->{secure};
440		506
441	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {	507	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
442	delete $cookies->{$cookie};	508	delete $cookies->{$cookie};
443	next;	509	next;
444	}	510	}
…		…
458	\@cookies	524	\@cookies
459	}	525	}
460		526
461	# parse set_cookie header into jar	527	# parse set_cookie header into jar
462	sub cookie_jar_set_cookie($$$$) {	528	sub cookie_jar_set_cookie($$$$) {
463	my ($jar, $set_cookie, $uhost, $date) = @_;	529	my ($jar, $set_cookie, $host, $date) = @_;
464		530
465	my $anow = int AE::now;	531	my $anow = int AE::now;
466	my $snow; # server-now	532	my $snow; # server-now
467		533
468	for ($set_cookie) {	534	for ($set_cookie) {
…		…
474	while (	540	while (
475	m{	541	m{
476	\G\s*	542	\G\s*
477	(?:	543	(?:
478	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)	544	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
479	\| ([^=;,[:space:]]+) (?: \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) ) )?	545	\| ([^=;,[:space:]]+) (?: \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^;,[:space:]]) ) )?
480	)	546	)
481	}gcxsi	547	}gcxsi
482	) {	548	) {
483	my $name = $2;	549	my $name = $2;
484	my $value = $4;	550	my $value = $4;
…		…
491	# quoted	557	# quoted
492	$value = $3;	558	$value = $3;
493	$value =~ s/\\(.)/$1/gs;	559	$value =~ s/\\(.)/$1/gs;
494	}	560	}
495		561
496	push @kv, lc $name, $value;	562	push @kv, @kv ? lc $name : $name, $value;
497		563
498	last unless /\G\s*;/gc;	564	last unless /\G\s*;/gc;
499	}	565	}
500		566
501	last unless @kv;	567	last unless @kv;
…		…
524		590
525	# this is not rfc-like and not netscape-like. go figure.	591	# this is not rfc-like and not netscape-like. go figure.
526	my $ndots = $cdom =~ y/.//;	592	my $ndots = $cdom =~ y/.//;
527	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	593	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
528	} else {	594	} else {
529	$cdom = $uhost;	595	$cdom = $host;
530	}	596	}
531		597
532	# store it	598	# store it
533	$jar->{version} = 1;	599	$jar->{version} = 1;
534	$jar->{lc $cdom}{$cpath}{$name} = \%kv;	600	$jar->{lc $cdom}{$cpath}{$name} = \%kv;
535		601
536	redo if /\G\s*,/gc;	602	redo if /\G\s*,/gc;
537	}	603	}
538	}	604	}
539		605
		606	#############################################################################
		607	# keepalive/persistent connection cache
		608
		609	# fetch a connection from the keepalive cache
		610	sub ka_fetch($) {
		611	my $ka_key = shift;
		612
		613	my $hdl = pop @{ $KA_CACHE{$ka_key} }; # currently we reuse the MOST RECENTLY USED connection
		614	delete $KA_CACHE{$ka_key}
		615	unless @{ $KA_CACHE{$ka_key} };
		616
		617	$hdl
		618	}
		619
		620	sub ka_store($$) {
		621	my ($ka_key, $hdl) = @_;
		622
		623	my $kaa = $KA_CACHE{$ka_key} \|\|= [];
		624
		625	my $destroy = sub {
		626	my @ka = grep $_ != $hdl, @{ $KA_CACHE{$ka_key} };
		627
		628	$hdl->destroy;
		629
		630	@ka
		631	? $KA_CACHE{$ka_key} = \@ka
		632	: delete $KA_CACHE{$ka_key};
		633	};
		634
		635	# on error etc., destroy
		636	$hdl->on_error ($destroy);
		637	$hdl->on_eof ($destroy);
		638	$hdl->on_read ($destroy);
		639	$hdl->timeout ($PERSISTENT_TIMEOUT);
		640
		641	push @$kaa, $hdl;
		642	shift @$kaa while @$kaa > $MAX_PER_HOST;
		643	}
		644
		645	#############################################################################
		646	# utilities
		647
540	# continue to parse $_ for headers and place them into the arg	648	# continue to parse $_ for headers and place them into the arg
541	sub parse_hdr() {	649	sub _parse_hdr() {
542	my %hdr;	650	my %hdr;
543		651
544	# things seen, not parsed:	652	# things seen, not parsed:
545	# p3pP="NON CUR OTPi OUR NOR UNI"	653	# p3pP="NON CUR OTPi OUR NOR UNI"
546		654
…		…
560	for values %hdr;	668	for values %hdr;
561		669
562	\%hdr	670	\%hdr
563	}	671	}
564		672
		673	#############################################################################
		674	# http_get
		675
565	our $qr_nlnl = qr{(?<![^\012])\015?\012};	676	our $qr_nlnl = qr{(?<![^\012])\015?\012};
566		677
567	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	678	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
568	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	679	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		680
		681	# maybe it should just become a normal object :/
		682
		683	sub _destroy_state(\%) {
		684	my ($state) = @_;
		685
		686	$state->{handle}->destroy if $state->{handle};
		687	%$state = ();
		688	}
		689
		690	sub _error(\%$$) {
		691	my ($state, $cb, $hdr) = @_;
		692
		693	&_destroy_state ($state);
		694
		695	$cb->(undef, $hdr);
		696	()
		697	}
		698
		699	our %IDEMPOTENT = (
		700	DELETE => 1,
		701	GET => 1,
		702	HEAD => 1,
		703	OPTIONS => 1,
		704	PUT => 1,
		705	TRACE => 1,
		706
		707	ACL => 1,
		708	"BASELINE-CONTROL" => 1,
		709	BIND => 1,
		710	CHECKIN => 1,
		711	CHECKOUT => 1,
		712	COPY => 1,
		713	LABEL => 1,
		714	LINK => 1,
		715	MERGE => 1,
		716	MKACTIVITY => 1,
		717	MKCALENDAR => 1,
		718	MKCOL => 1,
		719	MKREDIRECTREF => 1,
		720	MKWORKSPACE => 1,
		721	MOVE => 1,
		722	ORDERPATCH => 1,
		723	PROPFIND => 1,
		724	PROPPATCH => 1,
		725	REBIND => 1,
		726	REPORT => 1,
		727	SEARCH => 1,
		728	UNBIND => 1,
		729	UNCHECKOUT => 1,
		730	UNLINK => 1,
		731	UNLOCK => 1,
		732	UPDATE => 1,
		733	UPDATEREDIRECTREF => 1,
		734	"VERSION-CONTROL" => 1,
		735	);
569		736
570	sub http_request($$@) {	737	sub http_request($$@) {
571	my $cb = pop;	738	my $cb = pop;
572	my ($method, $url, %arg) = @_;	739	my ($method, $url, %arg) = @_;
573		740
…		…
591	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	758	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
592		759
593	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })	760	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
594	if $recurse < 0;	761	if $recurse < 0;
595		762
596	my $proxy = $arg{proxy} \|\| $PROXY;	763	my $proxy = exists $arg{proxy} ? $arg{proxy} : $PROXY;
597	my $timeout = $arg{timeout} \|\| $TIMEOUT;	764	my $timeout = $arg{timeout} \|\| $TIMEOUT;
598		765
599	my ($uscheme, $uauthority, $upath, $query, $fragment) =	766	my ($uscheme, $uauthority, $upath, $query, undef) = # ignore fragment
600	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;	767	$url =~ m\|^([^:]+):(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?$\|;
601		768
602	$uscheme = lc $uscheme;	769	$uscheme = lc $uscheme;
603		770
604	my $uport = $uscheme eq "http" ? 80	771	my $uport = $uscheme eq "http" ? 80
605	: $uscheme eq "https" ? 443	772	: $uscheme eq "https" ? 443
…		…
649	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};	816	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
650		817
651	$hdr{"content-length"} = length $arg{body}	818	$hdr{"content-length"} = length $arg{body}
652	if length $arg{body} \|\| $method ne "GET";	819	if length $arg{body} \|\| $method ne "GET";
653		820
654	$hdr{connection} = "close Te"; #1.1	821	my $idempotent = $IDEMPOTENT{$method};
		822
		823	# default value for keepalive is true iff the request is for an idempotent method
		824	my $persistent = exists $arg{persistent} ? !!$arg{persistent} : $idempotent;
		825	my $keepalive = exists $arg{keepalive} ? !!$arg{keepalive} : !$proxy;
		826	my $was_persistent; # true if this is actually a recycled connection
		827
		828	# the key to use in the keepalive cache
		829	my $ka_key = "$uscheme\x00$uhost\x00$uport\x00$arg{sessionid}";
		830
		831	$hdr{connection} = ($persistent ? $keepalive ? "keep-alive, " : "" : "close, ") . "Te"; #1.1
655	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1	832	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
656		833
657	my %state = (connect_guard => 1);	834	my %state = (connect_guard => 1);
658		835
659	my $ae_error = 595; # connecting	836	my $ae_error = 595; # connecting
660		837
661	# handle actual, non-tunneled, request	838	# handle actual, non-tunneled, request
662	my $handle_actual_request = sub {	839	my $handle_actual_request = sub {
663	$ae_error = 596; # request phase	840	$ae_error = 596; # request phase
664		841
		842	my $hdl = $state{handle};
		843
665	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	844	$hdl->starttls ("connect") if $uscheme eq "https" && !exists $hdl->{tls};
666		845
667	# send request	846	# send request
668	$state{handle}->push_write (	847	$hdl->push_write (
669	"$method $rpath HTTP/1.1\015\012"	848	"$method $rpath HTTP/1.1\015\012"
670	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	849	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
671	. "\015\012"	850	. "\015\012"
672	. (delete $arg{body})	851	. (delete $arg{body})
673	);	852	);
674		853
675	# return if error occured during push_write()	854	# return if error occurred during push_write()
676	return unless %state;	855	return unless %state;
677		856
678	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	857	# reduce memory usage, save a kitten, also re-use it for the response headers.
		858	%hdr = ();
679		859
680	# status line and headers	860	# status line and headers
681	$state{read_response} = sub {	861	$state{read_response} = sub {
		862	return unless %state;
		863
682	for ("$_[1]") {	864	for ("$_[1]") {
683	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	865	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
684		866
685	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci	867	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
686	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));	868	or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid server response" };
687		869
688	# 100 Continue handling	870	# 100 Continue handling
689	# should not happen as we don't send expect: 100-continue,	871	# should not happen as we don't send expect: 100-continue,
690	# but we handle it just in case.	872	# but we handle it just in case.
691	# since we send the request body regardless, if we get an error	873	# since we send the request body regardless, if we get an error
…		…
697	HTTPVersion => $1,	879	HTTPVersion => $1,
698	Status => $2,	880	Status => $2,
699	Reason => $3,	881	Reason => $3,
700	;	882	;
701		883
702	my $hdr = parse_hdr	884	my $hdr = _parse_hdr
703	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));	885	or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Garbled response headers" };
704		886
705	%hdr = (%$hdr, @pseudo);	887	%hdr = (%$hdr, @pseudo);
706	}	888	}
707		889
708	# redirect handling	890	# redirect handling
709	# microsoft and other shitheads don't give a shit for following standards,	891	# relative uri handling forced by microsoft and other shitheads.
710	# try to support some common forms of broken Location headers.	892	# we give our best and fall back to URI if available.
711	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	893	if (exists $hdr{location}) {
		894	my $loc = $hdr{location};
		895
		896	if ($loc =~ m%^//%) { # //
		897	$loc = "$rscheme:$loc";
		898
		899	} elsif ($loc eq "") {
		900	$loc = $url;
		901
		902	} elsif ($loc !~ /^(?: $ \| [^:\/?\#]+ : )/x) { # anything "simple"
712	$hdr{location} =~ s/^\.\/+//;	903	$loc =~ s/^\.\/+//;
713		904
		905	if ($loc !~ m%^[.?#]%) {
714	my $url = "$rscheme://$uhost:$uport";	906	my $prefix = "$rscheme://$uhost:$uport";
715		907
716	unless ($hdr{location} =~ s/^\///) {	908	unless ($loc =~ s/^\///) {
717	$url .= $upath;	909	$prefix .= $upath;
718	$url =~ s/\/[^\/]*$//;	910	$prefix =~ s/\/[^\/]*$//;
		911	}
		912
		913	$loc = "$prefix/$loc";
		914
		915	} elsif (eval { require URI }) { # uri
		916	$loc = URI->new_abs ($loc, $url)->as_string;
		917
		918	} else {
		919	return _error %state, $cb, { @pseudo, Status => 599, Reason => "Cannot parse Location (URI module missing)" };
		920	#$hdr{Status} = 599;
		921	#$hdr{Reason} = "Unparsable Redirect (URI module missing)";
		922	#$recurse = 0;
		923	}
719	}	924	}
720		925
721	$hdr{location} = "$url/$hdr{location}";	926	$hdr{location} = $loc;
722	}	927	}
723		928
724	my $redirect;	929	my $redirect;
725		930
726	if ($recurse) {	931	if ($recurse) {
…		…
728		933
729	# industry standard is to redirect POST as GET for	934	# industry standard is to redirect POST as GET for
730	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.	935	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
731	# also, the UA should ask the user for 301 and 307 and POST,	936	# also, the UA should ask the user for 301 and 307 and POST,
732	# industry standard seems to be to simply follow.	937	# industry standard seems to be to simply follow.
733	# we go with the industry standard.	938	# we go with the industry standard. 308 is defined
		939	# by rfc7238
734	if ($status == 301 or $status == 302 or $status == 303) {	940	if ($status == 301 or $status == 302 or $status == 303) {
735	# HTTP/1.1 is unclear on how to mutate the method	941	# HTTP/1.1 is unclear on how to mutate the method
736	$method = "GET" unless $method eq "HEAD";	942	$method = "GET" unless $method eq "HEAD";
737	$redirect = 1;	943	$redirect = 1;
738	} elsif ($status == 307) {	944	} elsif ($status == 307 or $status == 308) {
739	$redirect = 1;	945	$redirect = 1;
740	}	946	}
741	}	947	}
742		948
743	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])	949	my $finish = sub { # ($data, $err_status, $err_reason[, $persistent])
744	my $may_keep_alive = $_[3];	950	if ($state{handle}) {
745		951	# handle keepalive
		952	if (
		953	$persistent
		954	&& $_[3]
		955	&& ($hdr{HTTPVersion} < 1.1
		956	? $hdr{connection} =~ /\bkeep-?alive\b/i
		957	: $hdr{connection} !~ /\bclose\b/i)
		958	) {
		959	ka_store $ka_key, delete $state{handle};
		960	} else {
		961	# no keepalive, destroy the handle
746	$state{handle}->destroy if $state{handle};	962	$state{handle}->destroy;
		963	}
		964	}
		965
747	%state = ();	966	%state = ();
748		967
749	if (defined $_[1]) {	968	if (defined $_[1]) {
750	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];	969	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
751	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];	970	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
…		…
758		977
759	if ($redirect && exists $hdr{location}) {	978	if ($redirect && exists $hdr{location}) {
760	# we ignore any errors, as it is very common to receive	979	# we ignore any errors, as it is very common to receive
761	# Content-Length != 0 but no actual body	980	# Content-Length != 0 but no actual body
762	# we also access %hdr, as $_[1] might be an erro	981	# we also access %hdr, as $_[1] might be an erro
		982	$state{recurse} =
763	http_request (	983	http_request (
764	$method => $hdr{location},	984	$method => $hdr{location},
765	%arg,	985	%arg,
766	recurse => $recurse - 1,	986	recurse => $recurse - 1,
767	Redirect => [$_[0], \%hdr],	987	Redirect => [$_[0], \%hdr],
		988	sub {
		989	%state = ();
		990	&$cb
		991	},
768	$cb);	992	);
769	} else {	993	} else {
770	$cb->($_[0], \%hdr);	994	$cb->($_[0], \%hdr);
771	}	995	}
772	};	996	};
773		997
774	$ae_error = 597; # body phase	998	$ae_error = 597; # body phase
775		999
		1000	my $chunked = $hdr{"transfer-encoding"} =~ /\bchunked\b/i; # not quite correct...
		1001
776	my $len = $hdr{"content-length"};	1002	my $len = $chunked ? undef : $hdr{"content-length"};
777		1003
778	# body handling, many different code paths	1004	# body handling, many different code paths
779	# - no body expected	1005	# - no body expected
780	# - want_body_handle	1006	# - want_body_handle
781	# - te chunked	1007	# - te chunked
…		…
796	$_[0]->on_error (undef);	1022	$_[0]->on_error (undef);
797	$_[0]->on_read (undef);	1023	$_[0]->on_read (undef);
798		1024
799	$finish->(delete $state{handle});	1025	$finish->(delete $state{handle});
800		1026
801	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {	1027	} elsif ($chunked) {
802	my $cl = 0;	1028	my $cl = 0;
803	my $body = undef;	1029	my $body = "";
804	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };	1030	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
805		1031
806	$state{read_chunk} = sub {	1032	$state{read_chunk} = sub {
807	$_[1] =~ /^([0-9a-fA-F]+)/	1033	$_[1] =~ /^([0-9a-fA-F]+)/
808	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");	1034	or return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
809		1035
810	my $len = hex $1;	1036	my $len = hex $1;
811		1037
812	if ($len) {	1038	if ($len) {
813	$cl += $len;	1039	$cl += $len;
…		…
828	$_[0]->push_read (line => $qr_nlnl, sub {	1054	$_[0]->push_read (line => $qr_nlnl, sub {
829	if (length $_[1]) {	1055	if (length $_[1]) {
830	for ("$_[1]") {	1056	for ("$_[1]") {
831	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	1057	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
832		1058
833	my $hdr = parse_hdr	1059	my $hdr = _parse_hdr
834	or return $finish->(undef, $ae_error => "Garbled response trailers");	1060	or return $finish->(undef, $ae_error => "Garbled response trailers");
835		1061
836	%hdr = (%hdr, %$hdr);	1062	%hdr = (%hdr, %$hdr);
837	}	1063	}
838	}	1064	}
…		…
881	$_[0]->on_read (sub { });	1107	$_[0]->on_read (sub { });
882	}	1108	}
883	}	1109	}
884	};	1110	};
885		1111
		1112	# if keepalive is enabled, then the server closing the connection
		1113	# before a response can happen legally - we retry on idempotent methods.
		1114	if ($was_persistent && $idempotent) {
		1115	my $old_eof = $hdl->{on_eof};
		1116	$hdl->{on_eof} = sub {
		1117	_destroy_state %state;
		1118
		1119	%state = ();
		1120	$state{recurse} =
		1121	http_request (
		1122	$method => $url,
		1123	%arg,
		1124	recurse => $recurse - 1,
		1125	keepalive => 0,
		1126	sub {
		1127	%state = ();
		1128	&$cb
		1129	}
		1130	);
		1131	};
		1132	$hdl->on_read (sub {
		1133	return unless %state;
		1134
		1135	# as soon as we receive something, a connection close
		1136	# once more becomes a hard error
		1137	$hdl->{on_eof} = $old_eof;
		1138	$hdl->push_read (line => $qr_nlnl, $state{read_response});
		1139	});
		1140	} else {
886	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});	1141	$hdl->push_read (line => $qr_nlnl, $state{read_response});
		1142	}
887	};	1143	};
888		1144
		1145	my $prepare_handle = sub {
		1146	my ($hdl) = $state{handle};
		1147
		1148	$hdl->on_error (sub {
		1149	_error %state, $cb, { @pseudo, Status => $ae_error, Reason => $_[2] };
		1150	});
		1151	$hdl->on_eof (sub {
		1152	_error %state, $cb, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" };
		1153	});
		1154	$hdl->timeout_reset;
		1155	$hdl->timeout ($timeout);
		1156	};
		1157
		1158	# connected to proxy (or origin server)
889	my $connect_cb = sub {	1159	my $connect_cb = sub {
890	$state{fh} = shift	1160	my $fh = shift
891	or do {
892	my $err = "$!";
893	%state = ();
894	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });	1161	or return _error %state, $cb, { @pseudo, Status => $ae_error, Reason => "$!" };
895	};
896		1162
897	return unless delete $state{connect_guard};	1163	return unless delete $state{connect_guard};
898		1164
899	# get handle	1165	# get handle
900	$state{handle} = new AnyEvent::Handle	1166	$state{handle} = new AnyEvent::Handle
		1167	%{ $arg{handle_params} },
901	fh => $state{fh},	1168	fh => $fh,
902	peername => $rhost,	1169	peername => $uhost,
903	tls_ctx => $arg{tls_ctx},	1170	tls_ctx => $arg{tls_ctx},
904	# these need to be reconfigured on keepalive handles
905	timeout => $timeout,
906	on_error => sub {
907	%state = ();
908	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
909	},
910	on_eof => sub {
911	%state = ();
912	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
913	},
914	;	1171	;
915		1172
916	# limit the number of persistent connections	1173	$prepare_handle->();
917	# keepalive not yet supported
918	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
919	# ++$KA_COUNT{$_[1]};
920	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
921	# --$KA_COUNT{$_[1]}
922	# };
923	# $hdr{connection} = "keep-alive";
924	# }
925		1174
926	$state{handle}->starttls ("connect") if $rscheme eq "https";	1175	#$state{handle}->starttls ("connect") if $rscheme eq "https";
927		1176
928	# now handle proxy-CONNECT method	1177	# now handle proxy-CONNECT method
929	if ($proxy && $uscheme eq "https") {	1178	if ($proxy && $uscheme eq "https") {
930	# oh dear, we have to wrap it into a connect request	1179	# oh dear, we have to wrap it into a connect request
931		1180
932	# maybe re-use $uauthority with patched port?	1181	# maybe re-use $uauthority with patched port?
933	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012");	1182	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012");
934	$state{handle}->push_read (line => $qr_nlnl, sub {	1183	$state{handle}->push_read (line => $qr_nlnl, sub {
935	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	1184	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
936	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));	1185	or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" };
937		1186
938	if ($2 == 200) {	1187	if ($2 == 200) {
939	$rpath = $upath;	1188	$rpath = $upath;
940	$handle_actual_request->();	1189	$handle_actual_request->();
941	} else {	1190	} else {
942	%state = ();
943	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });	1191	_error %state, $cb, { @pseudo, Status => $2, Reason => $3 };
944	}	1192	}
945	});	1193	});
946	} else {	1194	} else {
947	$handle_actual_request->();	1195	$handle_actual_request->();
948	}	1196	}
…		…
951	_get_slot $uhost, sub {	1199	_get_slot $uhost, sub {
952	$state{slot_guard} = shift;	1200	$state{slot_guard} = shift;
953		1201
954	return unless $state{connect_guard};	1202	return unless $state{connect_guard};
955		1203
		1204	# try to use an existing keepalive connection, but only if we, ourselves, plan
		1205	# on a keepalive request (in theory, this should be a separate config option).
		1206	if ($persistent && $KA_CACHE{$ka_key}) {
		1207	$was_persistent = 1;
		1208
		1209	$state{handle} = ka_fetch $ka_key;
		1210	$state{handle}->destroyed
		1211	and die "AnyEvent::HTTP: unexpectedly got a destructed handle (1), please report.";#d#
		1212	$prepare_handle->();
		1213	$state{handle}->destroyed
		1214	and die "AnyEvent::HTTP: unexpectedly got a destructed handle (2), please report.";#d#
		1215	$handle_actual_request->();
		1216
		1217	} else {
956	my $tcp_connect = $arg{tcp_connect}	1218	my $tcp_connect = $arg{tcp_connect}
957	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };	1219	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
958		1220
959	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });	1221	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		1222	}
960	};	1223	};
961		1224
962	defined wantarray && AnyEvent::Util::guard { %state = () }	1225	defined wantarray && AnyEvent::Util::guard { _destroy_state %state }
963	}	1226	}
964		1227
965	sub http_get($@) {	1228	sub http_get($@) {
966	unshift @_, "GET";	1229	unshift @_, "GET";
967	&http_request	1230	&http_request
…		…
985	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for	1248	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
986	the actual connection, which in turn uses AnyEvent::DNS to resolve	1249	the actual connection, which in turn uses AnyEvent::DNS to resolve
987	hostnames. The latter is a simple stub resolver and does no caching	1250	hostnames. The latter is a simple stub resolver and does no caching
988	on its own. If you want DNS caching, you currently have to provide	1251	on its own. If you want DNS caching, you currently have to provide
989	your own default resolver (by storing a suitable resolver object in	1252	your own default resolver (by storing a suitable resolver object in
990	C<$AnyEvent::DNS::RESOLVER>).	1253	C<$AnyEvent::DNS::RESOLVER>) or your own C<tcp_connect> callback.
991		1254
992	=head2 GLOBAL FUNCTIONS AND VARIABLES	1255	=head2 GLOBAL FUNCTIONS AND VARIABLES
993		1256
994	=over 4	1257	=over 4
995		1258
996	=item AnyEvent::HTTP::set_proxy "proxy-url"	1259	=item AnyEvent::HTTP::set_proxy "proxy-url"
997		1260
998	Sets the default proxy server to use. The proxy-url must begin with a	1261	Sets the default proxy server to use. The proxy-url must begin with a
999	string of the form C<http://host:port> (optionally C<https:...>), croaks	1262	string of the form C<http://host:port>, croaks otherwise.
1000	otherwise.
1001		1263
1002	To clear an already-set proxy, use C<undef>.	1264	To clear an already-set proxy, use C<undef>.
		1265
		1266	When AnyEvent::HTTP is loaded for the first time it will query the
		1267	default proxy from the operating system, currently by looking at
		1268	C<$ENV{http_proxy>}.
1003		1269
1004	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]	1270	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
1005		1271
1006	Remove all cookies from the cookie jar that have been expired. If	1272	Remove all cookies from the cookie jar that have been expired. If
1007	C<$session_end> is given and true, then additionally remove all session	1273	C<$session_end> is given and true, then additionally remove all session
1008	cookies.	1274	cookies.
1009		1275
1010	You should call this function (with a true C<$session_end>) before you	1276	You should call this function (with a true C<$session_end>) before you
1011	save cookies to disk, and you should call this function after loading them	1277	save cookies to disk, and you should call this function after loading them
1012	again. If you have a long-running program you can additonally call this	1278	again. If you have a long-running program you can additionally call this
1013	function from time to time.	1279	function from time to time.
1014		1280
1015	A cookie jar is initially an empty hash-reference that is managed by this	1281	A cookie jar is initially an empty hash-reference that is managed by this
1016	module. It's format is subject to change, but currently it is like this:	1282	module. It's format is subject to change, but currently it is like this:
1017		1283
1018	The key C<version> has to contain C<1>, otherwise the hash gets	1284	The key C<version> has to contain C<1>, otherwise the hash gets
1019	emptied. All other keys are hostnames or IP addresses pointing to	1285	emptied. All other keys are hostnames or IP addresses pointing to
1020	hash-references. The key for these inner hash references is the	1286	hash-references. The key for these inner hash references is the
1021	server path for which this cookie is meant, and the values are again	1287	server path for which this cookie is meant, and the values are again
1022	hash-references. The keys of those hash-references is the cookie name, and	1288	hash-references. Each key of those hash-references is a cookie name, and
1023	the value, you guessed it, is another hash-reference, this time with the	1289	the value, you guessed it, is another hash-reference, this time with the
1024	key-value pairs from the cookie, except for C<expires> and C<max-age>,	1290	key-value pairs from the cookie, except for C<expires> and C<max-age>,
1025	which have been replaced by a C<_expires> key that contains the cookie	1291	which have been replaced by a C<_expires> key that contains the cookie
1026	expiry timestamp.	1292	expiry timestamp. Session cookies are indicated by not having an
		1293	C<_expires> key.
1027		1294
1028	Here is an example of a cookie jar with a single cookie, so you have a	1295	Here is an example of a cookie jar with a single cookie, so you have a
1029	chance of understanding the above paragraph:	1296	chance of understanding the above paragraph:
1030		1297
1031	{	1298	{
…		…
1053		1320
1054	=item $AnyEvent::HTTP::MAX_RECURSE	1321	=item $AnyEvent::HTTP::MAX_RECURSE
1055		1322
1056	The default value for the C<recurse> request parameter (default: C<10>).	1323	The default value for the C<recurse> request parameter (default: C<10>).
1057		1324
		1325	=item $AnyEvent::HTTP::TIMEOUT
		1326
		1327	The default timeout for connection operations (default: C<300>).
		1328
1058	=item $AnyEvent::HTTP::USERAGENT	1329	=item $AnyEvent::HTTP::USERAGENT
1059		1330
1060	The default value for the C<User-Agent> header (the default is	1331	The default value for the C<User-Agent> header (the default is
1061	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	1332	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
1062		1333
1063	=item $AnyEvent::HTTP::MAX_PER_HOST	1334	=item $AnyEvent::HTTP::MAX_PER_HOST
1064		1335
1065	The maximum number of concurrent connections to the same host (identified	1336	The maximum number of concurrent connections to the same host (identified
1066	by the hostname). If the limit is exceeded, then the additional requests	1337	by the hostname). If the limit is exceeded, then the additional requests
1067	are queued until previous connections are closed.	1338	are queued until previous connections are closed. Both persistent and
		1339	non-persistent connections are counted in this limit.
1068		1340
1069	The default value for this is C<4>, and it is highly advisable to not	1341	The default value for this is C<4>, and it is highly advisable to not
1070	increase it.	1342	increase it much.
		1343
		1344	For comparison: the RFC's recommend 4 non-persistent or 2 persistent
		1345	connections, older browsers used 2, newer ones (such as firefox 3)
		1346	typically use 6, and Opera uses 8 because like, they have the fastest
		1347	browser and give a shit for everybody else on the planet.
		1348
		1349	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
		1350
		1351	The time after which idle persistent connections get closed by
		1352	AnyEvent::HTTP (default: C<3>).
1071		1353
1072	=item $AnyEvent::HTTP::ACTIVE	1354	=item $AnyEvent::HTTP::ACTIVE
1073		1355
1074	The number of active connections. This is not the number of currently	1356	The number of active connections. This is not the number of currently
1075	running requests, but the number of currently open and non-idle TCP	1357	running requests, but the number of currently open and non-idle TCP
1076	connections. This number of can be useful for load-leveling.	1358	connections. This number can be useful for load-leveling.
1077		1359
1078	=back	1360	=back
1079		1361
1080	=cut	1362	=cut
1081		1363
…		…
1115	# other formats fail in the loop below	1397	# other formats fail in the loop below
1116		1398
1117	for (0..11) {	1399	for (0..11) {
1118	if ($m eq $month[$_]) {	1400	if ($m eq $month[$_]) {
1119	require Time::Local;	1401	require Time::Local;
1120	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);	1402	return eval { Time::Local::timegm ($S, $M, $H, $d, $_, $y) };
1121	}	1403	}
1122	}	1404	}
1123		1405
1124	undef	1406	undef
1125	}	1407	}
1126		1408
1127	sub set_proxy($) {	1409	sub set_proxy($) {
1128	if (length $_[0]) {	1410	if (length $_[0]) {
1129	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1411	$_[0] =~ m%^(http):// ([^:/]+) (?: : (\d*) )?%ix
1130	or Carp::croak "$_[0]: invalid proxy URL";	1412	or Carp::croak "$_[0]: invalid proxy URL";
1131	$PROXY = [$2, $3 \|\| 3128, $1]	1413	$PROXY = [$2, $3 \|\| 3128, $1]
1132	} else {	1414	} else {
1133	undef $PROXY;	1415	undef $PROXY;
1134	}	1416	}
…		…
1137	# initialise proxy from environment	1419	# initialise proxy from environment
1138	eval {	1420	eval {
1139	set_proxy $ENV{http_proxy};	1421	set_proxy $ENV{http_proxy};
1140	};	1422	};
1141		1423
		1424	=head2 SHOWCASE
		1425
		1426	This section contains some more elaborate "real-world" examples or code
		1427	snippets.
		1428
		1429	=head2 HTTP/1.1 FILE DOWNLOAD
		1430
		1431	Downloading files with HTTP can be quite tricky, especially when something
		1432	goes wrong and you want to resume.
		1433
		1434	Here is a function that initiates and resumes a download. It uses the
		1435	last modified time to check for file content changes, and works with many
		1436	HTTP/1.0 servers as well, and usually falls back to a complete re-download
		1437	on older servers.
		1438
		1439	It calls the completion callback with either C<undef>, which means a
		1440	nonretryable error occurred, C<0> when the download was partial and should
		1441	be retried, and C<1> if it was successful.
		1442
		1443	use AnyEvent::HTTP;
		1444
		1445	sub download($$$) {
		1446	my ($url, $file, $cb) = @_;
		1447
		1448	open my $fh, "+<", $file
		1449	or die "$file: $!";
		1450
		1451	my %hdr;
		1452	my $ofs = 0;
		1453
		1454	warn stat $fh;
		1455	warn -s _;
		1456	if (stat $fh and -s _) {
		1457	$ofs = -s _;
		1458	warn "-s is ", $ofs;
		1459	$hdr{"if-unmodified-since"} = AnyEvent::HTTP::format_date +(stat _)[9];
		1460	$hdr{"range"} = "bytes=$ofs-";
		1461	}
		1462
		1463	http_get $url,
		1464	headers => \%hdr,
		1465	on_header => sub {
		1466	my ($hdr) = @_;
		1467
		1468	if ($hdr->{Status} == 200 && $ofs) {
		1469	# resume failed
		1470	truncate $fh, $ofs = 0;
		1471	}
		1472
		1473	sysseek $fh, $ofs, 0;
		1474
		1475	1
		1476	},
		1477	on_body => sub {
		1478	my ($data, $hdr) = @_;
		1479
		1480	if ($hdr->{Status} =~ /^2/) {
		1481	length $data == syswrite $fh, $data
		1482	or return; # abort on write errors
		1483	}
		1484
		1485	1
		1486	},
		1487	sub {
		1488	my (undef, $hdr) = @_;
		1489
		1490	my $status = $hdr->{Status};
		1491
		1492	if (my $time = AnyEvent::HTTP::parse_date $hdr->{"last-modified"}) {
		1493	utime $fh, $time, $time;
		1494	}
		1495
		1496	if ($status == 200 \|\| $status == 206 \|\| $status == 416) {
		1497	# download ok \|\| resume ok \|\| file already fully downloaded
		1498	$cb->(1, $hdr);
		1499
		1500	} elsif ($status == 412) {
		1501	# file has changed while resuming, delete and retry
		1502	unlink $file;
		1503	$cb->(0, $hdr);
		1504
		1505	} elsif ($status == 500 or $status == 503 or $status =~ /^59/) {
		1506	# retry later
		1507	$cb->(0, $hdr);
		1508
		1509	} else {
		1510	$cb->(undef, $hdr);
		1511	}
		1512	}
		1513	;
		1514	}
		1515
		1516	download "http://server/somelargefile", "/tmp/somelargefile", sub {
		1517	if ($_[0]) {
		1518	print "OK!\n";
		1519	} elsif (defined $_[0]) {
		1520	print "please retry later\n";
		1521	} else {
		1522	print "ERROR\n";
		1523	}
		1524	};
		1525
1142	=head2 SOCKS PROXIES	1526	=head3 SOCKS PROXIES
1143		1527
1144	Socks proxies are not directly supported by AnyEvent::HTTP. You can	1528	Socks proxies are not directly supported by AnyEvent::HTTP. You can
1145	compile your perl to support socks, or use an external program such as	1529	compile your perl to support socks, or use an external program such as
1146	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy	1530	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
1147	transparently.	1531	transparently.

Diff Legend

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

Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.88 by root, Sun Jan 2 20:57:03 2011 UTC vs. Revision 1.119 by root, Sun Jun 8 23:33:28 2014 UTC

Diff Legend

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.88 by root, Sun Jan 2 20:57:03 2011 UTC vs.
Revision 1.119 by root, Sun Jun 8 23:33:28 2014 UTC