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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.42 by root, Mon Jul 6 00:08:16 2009 UTC vs.
Revision 1.84 by root, Sun Jan 2 05:13:27 2011 UTC

…		…
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 4.452 ();	46	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Socket ();
49	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
50		49
51	use base Exporter::;	50	use base Exporter::;
52		51
53	our $VERSION = '1.12';	52	our $VERSION = '1.5';
54		53
55	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
56		55
57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
59	our $MAX_PERSISTENT = 8;	58	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	59	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	60	our $TIMEOUT = 300;
62		61
63	# changing these is evil	62	# changing these is evil
64	our $MAX_PERSISTENT_PER_HOST = 2;	63	our $MAX_PERSISTENT_PER_HOST = 0;
65	our $MAX_PER_HOST = 4;	64	our $MAX_PER_HOST = 4;
66		65
67	our $PROXY;	66	our $PROXY;
68	our $ACTIVE = 0;	67	our $ACTIVE = 0;
69		68
…		…
92	must be an absolute http or https URL.	91	must be an absolute http or https URL.
93		92
94	When called in void context, nothing is returned. In other contexts,	93	When called in void context, nothing is returned. In other contexts,
95	C<http_request> returns a "cancellation guard" - you have to keep the	94	C<http_request> returns a "cancellation guard" - you have to keep the
96	object at least alive until the callback get called. If the object gets	95	object at least alive until the callback get called. If the object gets
97	destroyed before the callbakc is called, the request will be cancelled.	96	destroyed before the callback is called, the request will be cancelled.
98		97
99	The callback will be called with the response body data as first argument	98	The callback will be called with the response body data as first argument
100	(or C<undef> if an error occured), and a hash-ref with response headers as	99	(or C<undef> if an error occured), and a hash-ref with response headers
101	second argument.	100	(and trailers) as second argument.
102		101
103	All the headers in that hash are lowercased. In addition to the response	102	All the headers in that hash are lowercased. In addition to the response
104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	contain the three parts of the HTTP Status-Line of the same name. The	105	three parts of the HTTP Status-Line of the same name. If an error occurs
		106	during the body phase of a request, then the original C<Status> and
		107	C<Reason> values from the header are available as C<OrigStatus> and
		108	C<OrigReason>.
		109
106	pseudo-header C<URL> contains the original URL (which can differ from the	110	The pseudo-header C<URL> contains the actual URL (which can differ from
107	requested URL when following redirects).	111	the requested URL when following redirects - for example, you might get
		112	an error that your URL scheme is not supported even though your URL is a
		113	valid http URL because it redirected to an ftp URL, in which case you can
		114	look at the URL pseudo header).
		115
		116	The pseudo-header C<Redirect> only exists when the request was a result
		117	of an internal redirect. In that case it is an array reference with
		118	the C<($data, $headers)> from the redirect response. Note that this
		119	response could in turn be the result of a redirect itself, and C<<
		120	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
108		122
109	If the server sends a header multiple times, then their contents will be	123	If the server sends a header multiple times, then their contents will be
110	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
111		125
112	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
114	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
115	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
116		144
117	A typical callback might look like this:	145	A typical callback might look like this:
118		146
119	sub {	147	sub {
120	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
136	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
137	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
138		166
139	=item headers => hashref	167	=item headers => hashref
140		168
141	The request headers to use. Currently, C<http_request> may provide its	169	The request headers to use. Currently, C<http_request> may provide its own
142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
143	and will provide defaults for C<User-Agent:> and C<Referer:>.	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		172	(this can be suppressed by using C<undef> for these headers in which case
		173	they won't be sent at all).
144		174
145	=item timeout => $seconds	175	=item timeout => $seconds
146		176
147	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
148	the timeout, as will read or write activity. Default timeout is 5 minutes.	178	the timeout, as will read or write activity, i.e. this is not an overall
		179	timeout.
		180
		181	Default timeout is 5 minutes.
149		182
150	=item proxy => [$host, $port[, $scheme]] or undef	183	=item proxy => [$host, $port[, $scheme]] or undef
151		184
152	Use the given http proxy for all requests. If not specified, then the	185	Use the given http proxy for all requests. If not specified, then the
153	default proxy (as specified by C<$ENV{http_proxy}>) is used.	186	default proxy (as specified by C<$ENV{http_proxy}>) is used.
154		187
155	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
156	HTTPS.	189	HTTPS.
157		190
158	=item body => $string	191	=item body => $string
159		192
160	The request body, usually empty. Will be-sent as-is (future versions of	193	The request body, usually empty. Will be sent as-is (future versions of
161	this module might offer more options).	194	this module might offer more options).
162		195
163	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
164		197
165	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
166	based on the original netscape specification.	199	based on the original netscape specification.
167		200
168	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which
169	get updated automatically. It is possible to save the cookie_jar to	202	will get updated automatically. It is possible to save the cookie jar
170	persistent storage with something like JSON or Storable, but this is not	203	to persistent storage with something like JSON or Storable - see the
171	recommended, as expiry times are currently being ignored.	204	C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
		205	expired or session-only cookies, and also for documentation on the format
		206	of the cookie jar.
172		207
173	Note that this cookie implementation is not of very high quality, nor	208	Note that this cookie implementation is not meant to be complete. If
174	meant to be complete. If you want complete cookie management you have to	209	you want complete cookie management you have to do that on your
175	do that on your own. C<cookie_jar> is meant as a quick fix to get some	210	own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
176	cookie-using sites working. Cookies are a privacy disaster, do not use	211	working. Cookies are a privacy disaster, do not use them unless required
177	them unless required to.	212	to.
		213
		214	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		215	headers will be set and handled by this module, otherwise they will be
		216	left untouched.
178		217
179	=item tls_ctx => $scheme \| $tls_ctx	218	=item tls_ctx => $scheme \| $tls_ctx
180		219
181	Specifies the AnyEvent::TLS context to be used for https connections. This	220	Specifies the AnyEvent::TLS context to be used for https connections. This
182	parameter follows the same rules as the C<tls_ctx> parameter to	221	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
186	verification) TLS context.	225	verification) TLS context.
187		226
188	The default for this option is C<low>, which could be interpreted as "give	227	The default for this option is C<low>, which could be interpreted as "give
189	me the page, no matter what".	228	me the page, no matter what".
190		229
		230	=item on_prepare => $callback->($fh)
		231
		232	In rare cases you need to "tune" the socket before it is used to
		233	connect (for exmaple, to bind it on a given IP address). This parameter
		234	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		235	and behaves exactly the same way (e.g. it has to provide a
		236	timeout). See the description for the C<$prepare_cb> argument of
		237	C<AnyEvent::Socket::tcp_connect> for details.
		238
		239	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		240
		241	In even rarer cases you want total control over how AnyEvent::HTTP
		242	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		243	to do this, but you can provide your own C<tcp_connect> function -
		244	obviously, it has to follow the same calling conventions, except that it
		245	may always return a connection guard object.
		246
		247	There are probably lots of weird uses for this function, starting from
		248	tracing the hosts C<http_request> actually tries to connect, to (inexact
		249	but fast) host => IP address caching or even socks protocol support.
		250
191	=item on_header => $callback->($headers)	251	=item on_header => $callback->($headers)
192		252
193	When specified, this callback will be called with the header hash as soon	253	When specified, this callback will be called with the header hash as soon
194	as headers have been successfully received from the remote server (not on	254	as headers have been successfully received from the remote server (not on
195	locally-generated errors).	255	locally-generated errors).
…		…
200		260
201	This callback is useful, among other things, to quickly reject unwanted	261	This callback is useful, among other things, to quickly reject unwanted
202	content, which, if it is supposed to be rare, can be faster than first	262	content, which, if it is supposed to be rare, can be faster than first
203	doing a C<HEAD> request.	263	doing a C<HEAD> request.
204		264
		265	The downside is that cancelling the request makes it impossible to re-use
		266	the connection. Also, the C<on_header> callback will not receive any
		267	trailer (headers sent after the response body).
		268
205	Example: cancel the request unless the content-type is "text/html".	269	Example: cancel the request unless the content-type is "text/html".
206		270
207	on_header => sub {	271	on_header => sub {
208	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	272	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
209	},	273	},
…		…
216		280
217	It has to return either true (in which case AnyEvent::HTTP will continue),	281	It has to return either true (in which case AnyEvent::HTTP will continue),
218	or false, in which case AnyEvent::HTTP will cancel the download (and call	282	or false, in which case AnyEvent::HTTP will cancel the download (and call
219	the completion callback with an error code of C<598>).	283	the completion callback with an error code of C<598>).
220		284
		285	The downside to cancelling the request is that it makes it impossible to
		286	re-use the connection.
		287
221	This callback is useful when the data is too large to be held in memory	288	This callback is useful when the data is too large to be held in memory
222	(so the callback writes it to a file) or when only some information should	289	(so the callback writes it to a file) or when only some information should
223	be extracted, or when the body should be processed incrementally.	290	be extracted, or when the body should be processed incrementally.
224		291
225	It is usually preferred over doing your own body handling via	292	It is usually preferred over doing your own body handling via
226	C<want_body_handle>.	293	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		294	only used to create a connection, C<want_body_handle> is the better
		295	alternative, as it allows you to install your own event handler, reducing
		296	resource usage.
227		297
228	=item want_body_handle => $enable	298	=item want_body_handle => $enable
229		299
230	When enabled (default is disabled), the behaviour of AnyEvent::HTTP	300	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
231	changes considerably: after parsing the headers, and instead of	301	changes considerably: after parsing the headers, and instead of
…		…
243	This is useful with some push-type services, where, after the initial	313	This is useful with some push-type services, where, after the initial
244	headers, an interactive protocol is used (typical example would be the	314	headers, an interactive protocol is used (typical example would be the
245	push-style twitter API which starts a JSON/XML stream).	315	push-style twitter API which starts a JSON/XML stream).
246		316
247	If you think you need this, first have a look at C<on_body>, to see if	317	If you think you need this, first have a look at C<on_body>, to see if
248	that doesn'T solve your problem in a better way.	318	that doesn't solve your problem in a better way.
249		319
250	=back	320	=back
251		321
252	Example: make a simple HTTP GET request for http://www.nethype.de/	322	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		323	the response body.
253		324
254	http_request GET => "http://www.nethype.de/", sub {	325	http_request GET => "http://www.nethype.de/", sub {
255	my ($body, $hdr) = @_;	326	my ($body, $hdr) = @_;
256	print "$body\n";	327	print "$body\n";
257	};	328	};
258		329
259	Example: make a HTTP HEAD request on https://www.google.com/, use a	330	Example: do a HTTP HEAD request on https://www.google.com/, use a
260	timeout of 30 seconds.	331	timeout of 30 seconds.
261		332
262	http_request	333	http_request
263	GET => "https://www.google.com",	334	GET => "https://www.google.com",
264	timeout => 30,	335	timeout => 30,
…		…
267	use Data::Dumper;	338	use Data::Dumper;
268	print Dumper $hdr;	339	print Dumper $hdr;
269	}	340	}
270	;	341	;
271		342
272	Example: make another simple HTTP GET request, but immediately try to	343	Example: do another simple HTTP GET request, but immediately try to
273	cancel it.	344	cancel it.
274		345
275	my $request = http_request GET => "http://www.nethype.de/", sub {	346	my $request = http_request GET => "http://www.nethype.de/", sub {
276	my ($body, $hdr) = @_;	347	my ($body, $hdr) = @_;
277	print "$body\n";	348	print "$body\n";
…		…
309	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	380	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
310		381
311	_slot_schedule $_[0];	382	_slot_schedule $_[0];
312	}	383	}
313		384
314	our $qr_nl = qr<\015?\012>;	385	#############################################################################
315	our $qr_nlnl = qr<\015?\012\015?\012>;	386
		387	# expire cookies
		388	sub cookie_jar_expire($;$) {
		389	my ($jar, $session_end) = @_;
		390
		391	%$jar = () if $jar->{version} != 1;
		392
		393	my $anow = AE::now;
		394
		395	while (my ($chost, $paths) = each %$jar) {
		396	next unless ref $paths;
		397
		398	while (my ($cpath, $cookies) = each %$paths) {
		399	while (my ($cookie, $kv) = each %$cookies) {
		400	if (exists $kv->{_expires}) {
		401	delete $cookies->{$cookie}
		402	if $anow > $kv->{_expires};
		403	} elsif ($session_end) {
		404	delete $cookies->{$cookie};
		405	}
		406	}
		407
		408	delete $paths->{$cpath}
		409	unless %$cookies;
		410	}
		411
		412	delete $jar->{$chost}
		413	unless %$paths;
		414	}
		415	}
		416
		417	# extract cookies from jar
		418	sub cookie_jar_extract($$$$) {
		419	my ($jar, $uscheme, $uhost, $upath) = @_;
		420
		421	$uhost = lc $uhost;
		422
		423	%$jar = () if $jar->{version} != 1;
		424
		425	my @cookies;
		426
		427	while (my ($chost, $paths) = each %$jar) {
		428	next unless ref $paths;
		429
		430	if ($chost =~ /^\./) {
		431	next unless $chost eq substr $uhost, -length $chost;
		432	} elsif ($chost =~ /\./) {
		433	next unless $chost eq $uhost;
		434	} else {
		435	next;
		436	}
		437
		438	while (my ($cpath, $cookies) = each %$paths) {
		439	next unless $cpath eq substr $upath, 0, length $cpath;
		440
		441	while (my ($cookie, $kv) = each %$cookies) {
		442	next if $uscheme ne "https" && exists $kv->{secure};
		443
		444	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
		445	delete $cookies->{$cookie};
		446	next;
		447	}
		448
		449	my $value = $kv->{value};
		450
		451	if ($value =~ /[=;,[:space:]]/) {
		452	$value =~ s/([\\"])/\\$1/g;
		453	$value = "\"$value\"";
		454	}
		455
		456	push @cookies, "$cookie=$value";
		457	}
		458	}
		459	}
		460
		461	\@cookies
		462	}
		463
		464	# parse set_cookie header into jar
		465	sub cookie_jar_set_cookie($$$$) {
		466	my ($jar, $set_cookie, $uhost, $date) = @_;
		467
		468	my $anow = int AE::now;
		469	my $snow; # server-now
		470
		471	for ($set_cookie) {
		472	# parse NAME=VALUE
		473	my @kv;
		474
		475	# expires is not http-compliant in the original cookie-spec,
		476	# we support the official date format and some extensions
		477	while (
		478	m{
		479	\G\s*
		480	(?:
		481	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		482	\| ([^=;,[:space:]]+) (?: \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) ) )?
		483	)
		484	}gcxsi
		485	) {
		486	my $name = $2;
		487	my $value = $4;
		488
		489	if (defined $1) {
		490	# expires
		491	$name = "expires";
		492	$value = $1;
		493	} elsif (defined $3) {
		494	# quoted
		495	$value = $3;
		496	$value =~ s/\\(.)/$1/gs;
		497	}
		498
		499	push @kv, lc $name, $value;
		500
		501	last unless /\G\s*;/gc;
		502	}
		503
		504	last unless @kv;
		505
		506	my $name = shift @kv;
		507	my %kv = (value => shift @kv, @kv);
		508
		509	if (exists $kv{"max-age"}) {
		510	$kv{_expires} = $anow + delete $kv{"max-age"};
		511	} elsif (exists $kv{expires}) {
		512	$snow \|\|= parse_date ($date) \|\| $anow;
		513	$kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
		514	} else {
		515	delete $kv{_expires};
		516	}
		517
		518	my $cdom;
		519	my $cpath = (delete $kv{path}) \|\| "/";
		520
		521	if (exists $kv{domain}) {
		522	$cdom = delete $kv{domain};
		523
		524	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		525
		526	next if $cdom =~ /\.$/;
		527
		528	# this is not rfc-like and not netscape-like. go figure.
		529	my $ndots = $cdom =~ y/.//;
		530	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		531	} else {
		532	$cdom = $uhost;
		533	}
		534
		535	# store it
		536	$jar->{version} = 1;
		537	$jar->{lc $cdom}{$cpath}{$name} = \%kv;
		538
		539	redo if /\G\s*,/gc;
		540	}
		541	}
		542
		543	# continue to parse $_ for headers and place them into the arg
		544	sub parse_hdr() {
		545	my %hdr;
		546
		547	# things seen, not parsed:
		548	# p3pP="NON CUR OTPi OUR NOR UNI"
		549
		550	$hdr{lc $1} .= ",$2"
		551	while /\G
		552	([^:\000-\037]*):
		553	[\011\040]*
		554	((?: [^\012]+ \| \012[\011\040] )*)
		555	\012
		556	/gxc;
		557
		558	/\G$/
		559	or return;
		560
		561	# remove the "," prefix we added to all headers above
		562	substr $_, 0, 1, ""
		563	for values %hdr;
		564
		565	\%hdr
		566	}
		567
		568	our $qr_nlnl = qr{(?<![^\012])\015?\012};
316		569
317	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	570	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
318	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	571	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
319		572
320	sub http_request($$@) {	573	sub http_request($$@) {
…		…
332	while (my ($k, $v) = each %$hdr) {	585	while (my ($k, $v) = each %$hdr) {
333	$hdr{lc $k} = $v;	586	$hdr{lc $k} = $v;
334	}	587	}
335	}	588	}
336		589
		590	# pseudo headers for all subsequent responses
		591	my @pseudo = (URL => $url);
		592	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		593
337	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	594	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
338		595
339	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	596	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
340	if $recurse < 0;	597	if $recurse < 0;
341		598
342	my $proxy = $arg{proxy} \|\| $PROXY;	599	my $proxy = $arg{proxy} \|\| $PROXY;
343	my $timeout = $arg{timeout} \|\| $TIMEOUT;	600	my $timeout = $arg{timeout} \|\| $TIMEOUT;
344		601
345	my ($uscheme, $uauthority, $upath, $query, $fragment) =	602	my ($uscheme, $uauthority, $upath, $query, $fragment) =
346	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	603	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
347		604
348	$uscheme = lc $uscheme;	605	$uscheme = lc $uscheme;
349		606
350	my $uport = $uscheme eq "http" ? 80	607	my $uport = $uscheme eq "http" ? 80
351	: $uscheme eq "https" ? 443	608	: $uscheme eq "https" ? 443
352	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });	609	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
353		610
354	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	611	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
355	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	612	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
356		613
357	my $uhost = $1;	614	my $uhost = $1;
358	$uport = $2 if defined $2;	615	$uport = $2 if defined $2;
359		616
		617	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		618	unless exists $hdr{host};
		619
360	$uhost =~ s/^\[(.*)\]$/$1/;	620	$uhost =~ s/^\[(.*)\]$/$1/;
361	$upath .= "?$query" if length $query;	621	$upath .= $query if length $query;
362		622
363	$upath =~ s%^/?%/%;	623	$upath =~ s%^/?%/%;
364		624
365	# cookie processing	625	# cookie processing
366	if (my $jar = $arg{cookie_jar}) {	626	if (my $jar = $arg{cookie_jar}) {
367	%$jar = () if $jar->{version} != 1;	627	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
368		628
369	my @cookie;
370
371	while (my ($chost, $v) = each %$jar) {
372	if ($chost =~ /^\./) {
373	next unless $chost eq substr $uhost, -length $chost;
374	} elsif ($chost =~ /\./) {
375	next unless $chost eq $uhost;
376	} else {
377	next;
378	}
379
380	while (my ($cpath, $v) = each %$v) {
381	next unless $cpath eq substr $upath, 0, length $cpath;
382
383	while (my ($k, $v) = each %$v) {
384	next if $uscheme ne "https" && exists $v->{secure};
385	my $value = $v->{value};
386	$value =~ s/([\\"])/\\$1/g;
387	push @cookie, "$k=\"$value\"";
388	}
389	}
390	}
391
392	$hdr{cookie} = join "; ", @cookie	629	$hdr{cookie} = join "; ", @$cookies
393	if @cookie;	630	if @$cookies;
394	}	631	}
395		632
396	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	633	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
397		634
398	if ($proxy) {	635	if ($proxy) {
399	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	636	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		637
		638	$rscheme = "http" unless defined $rscheme;
400		639
401	# don't support https requests over https-proxy transport,	640	# don't support https requests over https-proxy transport,
402	# can't be done with tls as spec'ed, unless you double-encrypt.	641	# can't be done with tls as spec'ed, unless you double-encrypt.
403	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	642	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
404	} else {	643	} else {
405	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	644	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
406	}	645	}
407		646
408	$hdr{"user-agent"} \|\|= $USERAGENT;	647	# leave out fragment and query string, just a heuristic
409	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic	648	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		649	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
410		650
411	$hdr{host} = "$uhost:$uport";
412	$hdr{"content-length"} = length $arg{body};	651	$hdr{"content-length"} = length $arg{body}
		652	if length $arg{body} \|\| $method ne "GET";
		653
		654	$hdr{connection} = "close TE"; #1.1
		655	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
413		656
414	my %state = (connect_guard => 1);	657	my %state = (connect_guard => 1);
415		658
416	_get_slot $uhost, sub {	659	_get_slot $uhost, sub {
417	$state{slot_guard} = shift;	660	$state{slot_guard} = shift;
418		661
419	return unless $state{connect_guard};	662	return unless $state{connect_guard};
420		663
421	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	664	my $ae_error = 595; # connecting
		665
		666	# handle actual, non-tunneled, request
		667	my $handle_actual_request = sub {
		668	$ae_error = 596; # request phase
		669
		670	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		671
		672	# send request
		673	$state{handle}->push_write (
		674	"$method $rpath HTTP/1.1\015\012"
		675	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
		676	. "\015\012"
		677	. (delete $arg{body})
		678	);
		679
		680	# return if error occured during push_write()
		681	return unless %state;
		682
		683	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
		684
		685	# status line and headers
		686	$state{read_response} = sub {
		687	for ("$_[1]") {
		688	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		689
		690	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
		691	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
		692
		693	# 100 Continue handling
		694	# should not happen as we don't send expect: 100-continue,
		695	# but we handle it just in case.
		696	# since we send the request body regardless, if we get an error
		697	# we are out of-sync, which we currently do NOT handle correctly.
		698	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		699	if $2 eq 100;
		700
		701	push @pseudo,
		702	HTTPVersion => $1,
		703	Status => $2,
		704	Reason => $3,
		705	;
		706
		707	my $hdr = parse_hdr
		708	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		709
		710	%hdr = (%$hdr, @pseudo);
		711	}
		712
		713	# redirect handling
		714	# microsoft and other shitheads don't give a shit for following standards,
		715	# try to support some common forms of broken Location headers.
		716	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		717	$hdr{location} =~ s/^\.\/+//;
		718
		719	my $url = "$rscheme://$uhost:$uport";
		720
		721	unless ($hdr{location} =~ s/^\///) {
		722	$url .= $upath;
		723	$url =~ s/\/[^\/]*$//;
		724	}
		725
		726	$hdr{location} = "$url/$hdr{location}";
		727	}
		728
		729	my $redirect;
		730
		731	if ($recurse) {
		732	my $status = $hdr{Status};
		733
		734	# industry standard is to redirect POST as GET for
		735	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		736	# also, the UA should ask the user for 301 and 307 and POST,
		737	# industry standard seems to be to simply follow.
		738	# we go with the industry standard.
		739	if ($status == 301 or $status == 302 or $status == 303) {
		740	# HTTP/1.1 is unclear on how to mutate the method
		741	$method = "GET" unless $method eq "HEAD";
		742	$redirect = 1;
		743	} elsif ($status == 307) {
		744	$redirect = 1;
		745	}
		746	}
		747
		748	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		749	my $may_keep_alive = $_[3];
		750
		751	$state{handle}->destroy if $state{handle};
		752	%state = ();
		753
		754	if (defined $_[1]) {
		755	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		756	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		757	}
		758
		759	# set-cookie processing
		760	if ($arg{cookie_jar}) {
		761	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
		762	}
		763
		764	if ($redirect && exists $hdr{location}) {
		765	# we ignore any errors, as it is very common to receive
		766	# Content-Length != 0 but no actual body
		767	# we also access %hdr, as $_[1] might be an erro
		768	http_request (
		769	$method => $hdr{location},
		770	%arg,
		771	recurse => $recurse - 1,
		772	Redirect => [$_[0], \%hdr],
		773	$cb);
		774	} else {
		775	$cb->($_[0], \%hdr);
		776	}
		777	};
		778
		779	$ae_error = 597; # body phase
		780
		781	my $len = $hdr{"content-length"};
		782	warn "no content $redirect x<$len>$hdr{Status}\n";#d#
		783
		784	# body handling, many different code paths
		785	# - no body expected
		786	# - want_body_handle
		787	# - te chunked
		788	# - 2x length known (with or without on_body)
		789	# - 2x length not known (with or without on_body)
		790	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		791	$finish->(undef, 598 => "Request cancelled by on_header");
		792	} elsif (
		793	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		794	or $method eq "HEAD"
		795	or (defined $len && $len == 0) # == 0, not !, because "0 " is true
		796	) {
		797	# no body
		798	$finish->("", undef, undef, 1);
		799
		800	} elsif (!$redirect && $arg{want_body_handle}) {
		801	$_[0]->on_eof (undef);
		802	$_[0]->on_error (undef);
		803	$_[0]->on_read (undef);
		804
		805	$finish->(delete $state{handle});
		806
		807	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		808	my $cl = 0;
		809	my $body = undef;
		810	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		811
		812	$state{read_chunk} = sub {
		813	$_[1] =~ /^([0-9a-fA-F]+)/
		814	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		815
		816	my $len = hex $1;
		817
		818	if ($len) {
		819	$cl += $len;
		820
		821	$_[0]->push_read (chunk => $len, sub {
		822	$on_body->($_[1], \%hdr)
		823	or return $finish->(undef, 598 => "Request cancelled by on_body");
		824
		825	$_[0]->push_read (line => sub {
		826	length $_[1]
		827	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		828	$_[0]->push_read (line => $state{read_chunk});
		829	});
		830	});
		831	} else {
		832	$hdr{"content-length"} \|\|= $cl;
		833
		834	$_[0]->push_read (line => $qr_nlnl, sub {
		835	if (length $_[1]) {
		836	for ("$_[1]") {
		837	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		838
		839	my $hdr = parse_hdr
		840	or return $finish->(undef, $ae_error => "Garbled response trailers");
		841
		842	%hdr = (%hdr, %$hdr);
		843	}
		844	}
		845
		846	$finish->($body, undef, undef, 1);
		847	});
		848	}
		849	};
		850
		851	$_[0]->push_read (line => $state{read_chunk});
		852
		853	} elsif ($arg{on_body}) {
		854	if (defined $len) {
		855	$_[0]->on_read (sub {
		856	$len -= length $_[0]{rbuf};
		857
		858	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		859	or return $finish->(undef, 598 => "Request cancelled by on_body");
		860
		861	$len > 0
		862	or $finish->("", undef, undef, 1);
		863	});
		864	} else {
		865	$_[0]->on_eof (sub {
		866	$finish->("");
		867	});
		868	$_[0]->on_read (sub {
		869	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		870	or $finish->(undef, 598 => "Request cancelled by on_body");
		871	});
		872	}
		873	} else {
		874	$_[0]->on_eof (undef);
		875
		876	if (defined $len) {
		877	$_[0]->on_read (sub {
		878	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		879	if $len <= length $_[0]{rbuf};
		880	});
		881	} else {
		882	$_[0]->on_error (sub {
		883	($! == Errno::EPIPE \|\| !$!)
		884	? $finish->(delete $_[0]{rbuf})
		885	: $finish->(undef, $ae_error => $_[2]);
		886	});
		887	$_[0]->on_read (sub { });
		888	}
		889	}
		890	};
		891
		892	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		893	};
		894
		895	my $connect_cb = sub {
422	$state{fh} = shift	896	$state{fh} = shift
423	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));	897	or do {
424	pop; # free memory, save a tree	898	my $err = "$!";
		899	%state = ();
		900	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
		901	};
425		902
426	return unless delete $state{connect_guard};	903	return unless delete $state{connect_guard};
427		904
428	# get handle	905	# get handle
429	$state{handle} = new AnyEvent::Handle	906	$state{handle} = new AnyEvent::Handle
430	fh => $state{fh},	907	fh => $state{fh},
		908	peername => $rhost,
		909	tls_ctx => $arg{tls_ctx},
		910	# these need to be reconfigured on keepalive handles
431	timeout => $timeout,	911	timeout => $timeout,
432	peername => $rhost,	912	on_error => sub {
433	tls_ctx => $arg{tls_ctx};	913	%state = ();
		914	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
		915	},
		916	on_eof => sub {
		917	%state = ();
		918	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
		919	},
		920	;
434		921
435	# limit the number of persistent connections	922	# limit the number of persistent connections
436	# keepalive not yet supported	923	# keepalive not yet supported
437	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	924	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
438	++$KA_COUNT{$_[1]};	925	# ++$KA_COUNT{$_[1]};
439	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	926	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
440	--$KA_COUNT{$_[1]}	927	# --$KA_COUNT{$_[1]}
441	};	928	# };
442	$hdr{connection} = "keep-alive";	929	# $hdr{connection} = "keep-alive";
443	} else {
444	delete $hdr{connection};
445	}	930	# }
446
447	# (re-)configure handle
448	$state{handle}->on_error (sub {
449	%state = ();
450	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
451	});
452	$state{handle}->on_eof (sub {
453	%state = ();
454	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
455	});
456		931
457	$state{handle}->starttls ("connect") if $rscheme eq "https";	932	$state{handle}->starttls ("connect") if $rscheme eq "https";
458
459	# handle actual, non-tunneled, request
460	my $handle_actual_request = sub {
461	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
462
463	# send request
464	$state{handle}->push_write (
465	"$method $rpath HTTP/1.0\015\012"
466	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
467	. "\015\012"
468	. (delete $arg{body})
469	);
470
471	%hdr = (); # reduce memory usage, save a kitten
472
473	# status line
474	$state{handle}->push_read (line => $qr_nl, sub {
475	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
476	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
477
478	my %hdr = ( # response headers
479	HTTPVersion => ",$1",
480	Status => ",$2",
481	Reason => ",$3",
482	URL => ",$url"
483	);
484
485	# headers, could be optimized a bit
486	$state{handle}->unshift_read (line => $qr_nlnl, sub {
487	for ("$_[1]\012") {
488	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
489
490	# things seen, not parsed:
491	# p3pP="NON CUR OTPi OUR NOR UNI"
492
493	$hdr{lc $1} .= ",$2"
494	while /\G
495	([^:\000-\037]+):
496	[\011\040]*
497	((?: [^\012]+ \| \012[\011\040] )*)
498	\012
499	/gxc;
500
501	/\G$/
502	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
503	}
504
505	substr $_, 0, 1, ""
506	for values %hdr;
507
508	# redirect handling
509	# microsoft and other shitheads don't give a shit for following standards,
510	# try to support some common forms of broken Location headers.
511	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
512	$hdr{location} =~ s/^\.\/+//;
513
514	my $url = "$rscheme://$uhost:$uport";
515
516	unless ($hdr{location} =~ s/^\///) {
517	$url .= $upath;
518	$url =~ s/\/[^\/]*$//;
519	}
520
521	$hdr{location} = "$url/$hdr{location}";
522	}
523
524	my $redirect;
525
526	if ($recurse) {
527	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
528	# apparently, mozilla et al. just change POST to GET here
529	# more research is needed before we do the same
530	$redirect = 1;
531	} elsif ($hdr{Status} == 303) {
532	# even http/1.1 is unclear on how to mutate the method
533	$method = "GET" unless $method eq "HEAD";
534	$redirect = 1;
535	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
536	$redirect = 1;
537	}
538	}
539
540	my $finish = sub {
541	$state{handle}->destroy if $state{handle};
542	%state = ();
543
544	# set-cookie processing
545	if ($arg{cookie_jar}) {
546	for ($_[1]{"set-cookie"}) {
547	# parse NAME=VALUE
548	my @kv;
549
550	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
551	my $name = $1;
552	my $value = $3;
553
554	unless ($value) {
555	$value = $2;
556	$value =~ s/\\(.)/$1/gs;
557	}
558
559	push @kv, $name => $value;
560
561	last unless /\G\s*;/gc;
562	}
563
564	last unless @kv;
565
566	my $name = shift @kv;
567	my %kv = (value => shift @kv, @kv);
568
569	my $cdom;
570	my $cpath = (delete $kv{path}) \|\| "/";
571
572	if (exists $kv{domain}) {
573	$cdom = delete $kv{domain};
574
575	$cdom =~ s/^\.?/./; # make sure it starts with a "."
576
577	next if $cdom =~ /\.$/;
578
579	# this is not rfc-like and not netscape-like. go figure.
580	my $ndots = $cdom =~ y/.//;
581	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
582	} else {
583	$cdom = $uhost;
584	}
585
586	# store it
587	$arg{cookie_jar}{version} = 1;
588	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
589
590	redo if /\G\s*,/gc;
591	}
592	}
593
594	if ($redirect) {
595	# we ignore any errors, as it is very common to receive
596	# Content-Length != 0 but no actual body
597	# we also access %hdr, as $_[1] might be an erro
598	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
599	} else {
600	$cb->($_[0], $_[1]);
601	}
602	};
603
604	my $len = $hdr{"content-length"};
605
606	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
607	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
608	} elsif (
609	$hdr{Status} =~ /^(?:1..\|[23]04)$/
610	or $method eq "HEAD"
611	or (defined $len && !$len)
612	) {
613	# no body
614	$finish->("", \%hdr);
615	} else {
616	# body handling, four different code paths
617	# for want_body_handle, on_body (2x), normal (2x)
618	# we might read too much here, but it does not matter yet (no pers. connections)
619	if (!$redirect && $arg{want_body_handle}) {
620	$_[0]->on_eof (undef);
621	$_[0]->on_error (undef);
622	$_[0]->on_read (undef);
623
624	$finish->(delete $state{handle}, \%hdr);
625
626	} elsif ($arg{on_body}) {
627	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
628	if ($len) {
629	$_[0]->on_eof (undef);
630	$_[0]->on_read (sub {
631	$len -= length $_[0]{rbuf};
632
633	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
634	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
635
636	$len > 0
637	or $finish->("", \%hdr);
638	});
639	} else {
640	$_[0]->on_eof (sub {
641	$finish->("", \%hdr);
642	});
643	$_[0]->on_read (sub {
644	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
645	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
646	});
647	}
648	} else {
649	$_[0]->on_eof (undef);
650
651	if ($len) {
652	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
653	$_[0]->on_read (sub {
654	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
655	if $len <= length $_[0]{rbuf};
656	});
657	} else {
658	$_[0]->on_error (sub {
659	$! == Errno::EPIPE
660	? $finish->(delete $_[0]{rbuf}, \%hdr)
661	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
662	});
663	$_[0]->on_read (sub { });
664	}
665	}
666	}
667	});
668	});
669	};
670		933
671	# now handle proxy-CONNECT method	934	# now handle proxy-CONNECT method
672	if ($proxy && $uscheme eq "https") {	935	if ($proxy && $uscheme eq "https") {
673	# oh dear, we have to wrap it into a connect request	936	# oh dear, we have to wrap it into a connect request
674		937
675	# maybe re-use $uauthority with patched port?	938	# maybe re-use $uauthority with patched port?
676	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	939	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
677	$state{handle}->push_read (line => $qr_nlnl, sub {	940	$state{handle}->push_read (line => $qr_nlnl, sub {
678	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	941	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
679	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	942	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
680		943
681	if ($2 == 200) {	944	if ($2 == 200) {
682	$rpath = $upath;	945	$rpath = $upath;
683	&$handle_actual_request;	946	$handle_actual_request->();
684	} else {	947	} else {
685	%state = ();	948	%state = ();
686	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	949	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
687	}	950	}
688	});	951	});
689	} else {	952	} else {
690	&$handle_actual_request;	953	$handle_actual_request->();
691	}	954	}
692
693	}, sub {
694	$timeout
695	};	955	};
		956
		957	my $tcp_connect = $arg{tcp_connect}
		958	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		959
		960	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
696	};	961	};
697		962
698	defined wantarray && AnyEvent::Util::guard { %state = () }	963	defined wantarray && AnyEvent::Util::guard { %state = () }
699	}	964	}
700		965
…		…
714	&http_request	979	&http_request
715	}	980	}
716		981
717	=back	982	=back
718		983
		984	=head2 DNS CACHING
		985
		986	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		987	the actual connection, which in turn uses AnyEvent::DNS to resolve
		988	hostnames. The latter is a simple stub resolver and does no caching
		989	on its own. If you want DNS caching, you currently have to provide
		990	your own default resolver (by storing a suitable resolver object in
		991	C<$AnyEvent::DNS::RESOLVER>).
		992
719	=head2 GLOBAL FUNCTIONS AND VARIABLES	993	=head2 GLOBAL FUNCTIONS AND VARIABLES
720		994
721	=over 4	995	=over 4
722		996
723	=item AnyEvent::HTTP::set_proxy "proxy-url"	997	=item AnyEvent::HTTP::set_proxy "proxy-url"
724		998
725	Sets the default proxy server to use. The proxy-url must begin with a	999	Sets the default proxy server to use. The proxy-url must begin with a
726	string of the form C<http://host:port> (optionally C<https:...>).	1000	string of the form C<http://host:port> (optionally C<https:...>), croaks
		1001	otherwise.
		1002
		1003	To clear an already-set proxy, use C<undef>.
		1004
		1005	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
		1006
		1007	Remove all cookies from the cookie jar that have been expired. If
		1008	C<$session_end> is given and true, then additionally remove all session
		1009	cookies.
		1010
		1011	You should call this function (with a true C<$session_end>) before you
		1012	save cookies to disk, and you should call this function after loading them
		1013	again. If you have a long-running program you can additonally call this
		1014	function from time to time.
		1015
		1016	A cookie jar is initially an empty hash-reference that is managed by this
		1017	module. It's format is subject to change, but currently it is like this:
		1018
		1019	The key C<version> has to contain C<1>, otherwise the hash gets
		1020	emptied. All other keys are hostnames or IP addresses pointing to
		1021	hash-references. The key for these inner hash references is the
		1022	server path for which this cookie is meant, and the values are again
		1023	hash-references. The keys of those hash-references is the cookie name, and
		1024	the value, you guessed it, is another hash-reference, this time with the
		1025	key-value pairs from the cookie, except for C<expires> and C<max-age>,
		1026	which have been replaced by a C<_expires> key that contains the cookie
		1027	expiry timestamp.
		1028
		1029	Here is an example of a cookie jar with a single cookie, so you have a
		1030	chance of understanding the above paragraph:
		1031
		1032	{
		1033	version => 1,
		1034	"10.0.0.1" => {
		1035	"/" => {
		1036	"mythweb_id" => {
		1037	_expires => 1293917923,
		1038	value => "ooRung9dThee3ooyXooM1Ohm",
		1039	},
		1040	},
		1041	},
		1042	}
		1043
		1044	=item $date = AnyEvent::HTTP::format_date $timestamp
		1045
		1046	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		1047	Date (RFC 2616).
		1048
		1049	=item $timestamp = AnyEvent::HTTP::parse_date $date
		1050
		1051	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		1052	bunch of minor variations of those, and returns the corresponding POSIX
		1053	timestamp, or C<undef> if the date cannot be parsed.
727		1054
728	=item $AnyEvent::HTTP::MAX_RECURSE	1055	=item $AnyEvent::HTTP::MAX_RECURSE
729		1056
730	The default value for the C<recurse> request parameter (default: C<10>).	1057	The default value for the C<recurse> request parameter (default: C<10>).
731		1058
732	=item $AnyEvent::HTTP::USERAGENT	1059	=item $AnyEvent::HTTP::USERAGENT
733		1060
734	The default value for the C<User-Agent> header (the default is	1061	The default value for the C<User-Agent> header (the default is
735	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	1062	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
736		1063
737	=item $AnyEvent::HTTP::MAX_PERSISTENT	1064	=item $AnyEvent::HTTP::MAX_PER_HOST
738		1065
739	The maximum number of persistent connections to keep open (default: 8).	1066	The maximum number of concurrent connections to the same host (identified
		1067	by the hostname). If the limit is exceeded, then the additional requests
		1068	are queued until previous connections are closed.
740		1069
741	Not implemented currently.	1070	The default value for this is C<4>, and it is highly advisable to not
742		1071	increase it.
743	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
744
745	The maximum time to cache a persistent connection, in seconds (default: 2).
746
747	Not implemented currently.
748		1072
749	=item $AnyEvent::HTTP::ACTIVE	1073	=item $AnyEvent::HTTP::ACTIVE
750		1074
751	The number of active connections. This is not the number of currently	1075	The number of active connections. This is not the number of currently
752	running requests, but the number of currently open and non-idle TCP	1076	running requests, but the number of currently open and non-idle TCP
…		…
754		1078
755	=back	1079	=back
756		1080
757	=cut	1081	=cut
758		1082
		1083	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1084	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1085
		1086	sub format_date($) {
		1087	my ($time) = @_;
		1088
		1089	# RFC 822/1123 format
		1090	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1091
		1092	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1093	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1094	$H, $M, $S;
		1095	}
		1096
		1097	sub parse_date($) {
		1098	my ($date) = @_;
		1099
		1100	my ($d, $m, $y, $H, $M, $S);
		1101
		1102	if ($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$/) {
		1103	# RFC 822/1123, required by RFC 2616 (with " ")
		1104	# cookie dates (with "-")
		1105
		1106	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1107
		1108	} elsif ($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$/) {
		1109	# RFC 850
		1110	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1111
		1112	} elsif ($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])$/) {
		1113	# ISO C's asctime
		1114	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1115	}
		1116	# other formats fail in the loop below
		1117
		1118	for (0..11) {
		1119	if ($m eq $month[$_]) {
		1120	require Time::Local;
		1121	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1122	}
		1123	}
		1124
		1125	undef
		1126	}
		1127
759	sub set_proxy($) {	1128	sub set_proxy($) {
		1129	if (length $_[0]) {
760	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1130	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1131	or Carp::croak "$_[0]: invalid proxy URL";
		1132	$PROXY = [$2, $3 \|\| 3128, $1]
		1133	} else {
		1134	undef $PROXY;
		1135	}
761	}	1136	}
762		1137
763	# initialise proxy from environment	1138	# initialise proxy from environment
		1139	eval {
764	set_proxy $ENV{http_proxy};	1140	set_proxy $ENV{http_proxy};
		1141	};
		1142
		1143	=head2 SOCKS PROXIES
		1144
		1145	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1146	compile your perl to support socks, or use an external program such as
		1147	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1148	transparently.
		1149
		1150	Alternatively, for AnyEvent::HTTP only, you can use your own
		1151	C<tcp_connect> function that does the proxy handshake - here is an example
		1152	that works with socks4a proxies:
		1153
		1154	use Errno;
		1155	use AnyEvent::Util;
		1156	use AnyEvent::Socket;
		1157	use AnyEvent::Handle;
		1158
		1159	# host, port and username of/for your socks4a proxy
		1160	my $socks_host = "10.0.0.23";
		1161	my $socks_port = 9050;
		1162	my $socks_user = "";
		1163
		1164	sub socks4a_connect {
		1165	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1166
		1167	my $hdl = new AnyEvent::Handle
		1168	connect => [$socks_host, $socks_port],
		1169	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1170	on_error => sub { $connect_cb->() },
		1171	;
		1172
		1173	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1174
		1175	$hdl->push_read (chunk => 8, sub {
		1176	my ($hdl, $chunk) = @_;
		1177	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1178
		1179	if ($status == 0x5a) {
		1180	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1181	} else {
		1182	$! = Errno::ENXIO; $connect_cb->();
		1183	}
		1184	});
		1185
		1186	$hdl
		1187	}
		1188
		1189	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1190	possibly after switching off other proxy types:
		1191
		1192	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1193
		1194	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1195	my ($data, $headers) = @_;
		1196	...
		1197	};
765		1198
766	=head1 SEE ALSO	1199	=head1 SEE ALSO
767		1200
768	L<AnyEvent>.	1201	L<AnyEvent>.
769		1202

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.42 by root, Mon Jul 6 00:08:16 2009 UTC vs. Revision 1.84 by root, Sun Jan 2 05:13:27 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.42 by root, Mon Jul 6 00:08:16 2009 UTC vs.
Revision 1.84 by root, Sun Jan 2 05:13:27 2011 UTC