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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.19 by elmex, Mon Jun 9 13:02:13 2008 UTC vs.
Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC

…		…
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Carp;	44	use Errno ();
45		45
46	use AnyEvent ();	46	use AnyEvent 4.8 ();
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Socket ();	48	use AnyEvent::Socket ();
49	use AnyEvent::Handle ();	49	use AnyEvent::Handle ();
50		50
51	use base Exporter::;	51	use base Exporter::;
52		52
53	our $VERSION = '1.01';	53	our $VERSION = '1.4';
54		54
55	our @EXPORT = qw(http_get http_post http_head http_request);	55	our @EXPORT = qw(http_get http_post http_head http_request);
56		56
57	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	58	our $MAX_RECURSE = 10;
59	our $MAX_PERSISTENT = 8;	59	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	60	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	61	our $TIMEOUT = 300;
62		62
63	# changing these is evil	63	# changing these is evil
64	our $MAX_PERSISTENT_PER_HOST = 2;	64	our $MAX_PERSISTENT_PER_HOST = 0;
65	our $MAX_PER_HOST = 4;	65	our $MAX_PER_HOST = 4;
66		66
67	our $PROXY;	67	our $PROXY;
68	our $ACTIVE = 0;	68	our $ACTIVE = 0;
69		69
…		…
71	my %CO_SLOT; # number of open connections, and wait queue, per host	71	my %CO_SLOT; # number of open connections, and wait queue, per host
72		72
73	=item http_get $url, key => value..., $cb->($data, $headers)	73	=item http_get $url, key => value..., $cb->($data, $headers)
74		74
75	Executes an HTTP-GET request. See the http_request function for details on	75	Executes an HTTP-GET request. See the http_request function for details on
76	additional parameters.	76	additional parameters and the return value.
77		77
78	=item http_head $url, key => value..., $cb->($data, $headers)	78	=item http_head $url, key => value..., $cb->($data, $headers)
79		79
80	Executes an HTTP-HEAD request. See the http_request function for details on	80	Executes an HTTP-HEAD request. See the http_request function for details
81	additional parameters.	81	on additional parameters and the return value.
82		82
83	=item http_post $url, $body, key => value..., $cb->($data, $headers)	83	=item http_post $url, $body, key => value..., $cb->($data, $headers)
84		84
85	Executes an HTTP-POST request with a request body of C<$bod>. See the	85	Executes an HTTP-POST request with a request body of C<$body>. See the
86	http_request function for details on additional parameters.	86	http_request function for details on additional parameters and the return
		87	value.
87		88
88	=item http_request $method => $url, key => value..., $cb->($data, $headers)	89	=item http_request $method => $url, key => value..., $cb->($data, $headers)
89		90
90	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	91	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
91	must be an absolute http or https URL.	92	must be an absolute http or https URL.
92		93
		94	When called in void context, nothing is returned. In other contexts,
		95	C<http_request> returns a "cancellation guard" - you have to keep the
		96	object at least alive until the callback get called. If the object gets
		97	destroyed before the callbakc is called, the request will be cancelled.
		98
93	The callback will be called with the response data as first argument	99	The callback will be called with the response body data as first argument
94	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if an error occured), and a hash-ref with response headers as
95	response headers as second argument.	101	second argument.
96		102
97	All the headers in that hash are lowercased. In addition to the response	103	All the headers in that hash are lowercased. In addition to the response
98	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
99	C<Reason> contain the three parts of the HTTP Status-Line of the same	105	contain the three parts of the HTTP Status-Line of the same name. The
		106	pseudo-header C<URL> contains the original URL (which can differ from the
		107	requested URL when following redirects).
		108
100	name. If the server sends a header multiple lines, then their contents	109	If the server sends a header multiple times, then their contents will be
101	will be joined together with C<\x00>.	110	joined together with a comma (C<,>), as per the HTTP spec.
102		111
103	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
104	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
105	and the C<Reason> pseudo-header will contain an error message.	114	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		115	message.
106		116
107	A typical callback might look like this:	117	A typical callback might look like this:
108		118
109	sub {	119	sub {
110	my ($body, $hdr) = @_;	120	my ($body, $hdr) = @_;
…		…
156	based on the original netscape specification.	166	based on the original netscape specification.
157		167
158	The C<$hash_ref> must be an (initially empty) hash reference which will	168	The C<$hash_ref> must be an (initially empty) hash reference which will
159	get updated automatically. It is possible to save the cookie_jar to	169	get updated automatically. It is possible to save the cookie_jar to
160	persistent storage with something like JSON or Storable, but this is not	170	persistent storage with something like JSON or Storable, but this is not
161	recommended, as expire times are currently being ignored.	171	recommended, as expiry times are currently being ignored.
162		172
163	Note that this cookie implementation is not of very high quality, nor	173	Note that this cookie implementation is not of very high quality, nor
164	meant to be complete. If you want complete cookie management you have to	174	meant to be complete. If you want complete cookie management you have to
165	do that on your own. C<cookie_jar> is meant as a quick fix to get some	175	do that on your own. C<cookie_jar> is meant as a quick fix to get some
166	cookie-using sites working. Cookies are a privacy disaster, do not use	176	cookie-using sites working. Cookies are a privacy disaster, do not use
167	them unless required to.	177	them unless required to.
		178
		179	=item tls_ctx => $scheme \| $tls_ctx
		180
		181	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
		183	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		184	C<high> can be specified, which give you a predefined low-security (no
		185	verification, highest compatibility) and high-security (CA and common-name
		186	verification) TLS context.
		187
		188	The default for this option is C<low>, which could be interpreted as "give
		189	me the page, no matter what".
		190
		191	=item on_header => $callback->($headers)
		192
		193	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
		195	locally-generated errors).
		196
		197	It has to return either true (in which case AnyEvent::HTTP will continue),
		198	or false, in which case AnyEvent::HTTP will cancel the download (and call
		199	the finish callback with an error code of C<598>).
		200
		201	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
		203	doing a C<HEAD> request.
		204
		205	Example: cancel the request unless the content-type is "text/html".
		206
		207	on_header => sub {
		208	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		209	},
		210
		211	=item on_body => $callback->($partial_body, $headers)
		212
		213	When specified, all body data will be passed to this callback instead of
		214	to the completion callback. The completion callback will get the empty
		215	string instead of the body data.
		216
		217	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
		219	the completion callback with an error code of C<598>).
		220
		221	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
		223	be extracted, or when the body should be processed incrementally.
		224
		225	It is usually preferred over doing your own body handling via
		226	C<want_body_handle>.
		227
		228	=item want_body_handle => $enable
		229
		230	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		231	changes considerably: after parsing the headers, and instead of
		232	downloading the body (if any), the completion callback will be
		233	called. Instead of the C<$body> argument containing the body data, the
		234	callback will receive the L<AnyEvent::Handle> object associated with the
		235	connection. In error cases, C<undef> will be passed. When there is no body
		236	(e.g. status C<304>), the empty string will be passed.
		237
		238	The handle object might or might not be in TLS mode, might be connected to
		239	a proxy, be a persistent connection etc., and configured in unspecified
		240	ways. The user is responsible for this handle (it will not be used by this
		241	module anymore).
		242
		243	This is useful with some push-type services, where, after the initial
		244	headers, an interactive protocol is used (typical example would be the
		245	push-style twitter API which starts a JSON/XML stream).
		246
		247	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.
168		249
169	=back	250	=back
170		251
171	Example: make a simple HTTP GET request for http://www.nethype.de/	252	Example: make a simple HTTP GET request for http://www.nethype.de/
172		253
…		…
185	my ($body, $hdr) = @_;	266	my ($body, $hdr) = @_;
186	use Data::Dumper;	267	use Data::Dumper;
187	print Dumper $hdr;	268	print Dumper $hdr;
188	}	269	}
189	;	270	;
		271
		272	Example: make another simple HTTP GET request, but immediately try to
		273	cancel it.
		274
		275	my $request = http_request GET => "http://www.nethype.de/", sub {
		276	my ($body, $hdr) = @_;
		277	print "$body\n";
		278	};
		279
		280	undef $request;
190		281
191	=cut	282	=cut
192		283
193	sub _slot_schedule;	284	sub _slot_schedule;
194	sub _slot_schedule($) {	285	sub _slot_schedule($) {
…		…
218	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	309	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
219		310
220	_slot_schedule $_[0];	311	_slot_schedule $_[0];
221	}	312	}
222		313
		314	our $qr_nl = qr<\015?\012>;
		315	our $qr_nlnl = qr<\015?\012\015?\012>;
		316
		317	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		318	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		319
223	sub http_request($$@) {	320	sub http_request($$@) {
224	my $cb = pop;	321	my $cb = pop;
225	my ($method, $url, %arg) = @_;	322	my ($method, $url, %arg) = @_;
226		323
227	my %hdr;	324	my %hdr;
		325
		326	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		327	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
228		328
229	$method = uc $method;	329	$method = uc $method;
230		330
231	if (my $hdr = $arg{headers}) {	331	if (my $hdr = $arg{headers}) {
232	while (my ($k, $v) = each %$hdr) {	332	while (my ($k, $v) = each %$hdr) {
233	$hdr{lc $k} = $v;	333	$hdr{lc $k} = $v;
234	}	334	}
235	}	335	}
236		336
237	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	337	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
238		338
239	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	339	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
240	if $recurse < 0;	340	if $recurse < 0;
241		341
242	my $proxy = $arg{proxy} \|\| $PROXY;	342	my $proxy = $arg{proxy} \|\| $PROXY;
243	my $timeout = $arg{timeout} \|\| $TIMEOUT;	343	my $timeout = $arg{timeout} \|\| $TIMEOUT;
244		344
245	$hdr{"user-agent"} \|\|= $USERAGENT;
246
247	my ($scheme, $authority, $upath, $query, $fragment) =	345	my ($uscheme, $uauthority, $upath, $query, $fragment) =
248	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	346	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
249		347
250	$scheme = lc $scheme;	348	$uscheme = lc $uscheme;
251		349
252	my $uport = $scheme eq "http" ? 80	350	my $uport = $uscheme eq "http" ? 80
253	: $scheme eq "https" ? 443	351	: $uscheme eq "https" ? 443
254	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	352	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
255		353
256	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
257
258	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	354	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
259	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	355	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
260		356
261	my $uhost = $1;	357	my $uhost = $1;
262	$uport = $2 if defined $2;	358	$uport = $2 if defined $2;
263		359
		360	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
		361
264	$uhost =~ s/^\[(.*)\]$/$1/;	362	$uhost =~ s/^\[(.*)\]$/$1/;
265	$upath .= "?$query" if length $query;	363	$upath .= "?$query" if length $query;
266		364
267	$upath =~ s%^/?%/%;	365	$upath =~ s%^/?%/%;
268		366
269	# cookie processing	367	# cookie processing
270	if (my $jar = $arg{cookie_jar}) {	368	if (my $jar = $arg{cookie_jar}) {
271	%$jar = () if $jar->{version} < 1;	369	%$jar = () if $jar->{version} != 1;
272		370
273	my @cookie;	371	my @cookie;
274		372
275	while (my ($chost, $v) = each %$jar) {	373	while (my ($chost, $v) = each %$jar) {
		374	if ($chost =~ /^\./) {
276	next unless $chost eq substr $uhost, -length $chost;	375	next unless $chost eq substr $uhost, -length $chost;
277	next unless $chost =~ /^\./;	376	} elsif ($chost =~ /\./) {
		377	next unless $chost eq $uhost;
		378	} else {
		379	next;
		380	}
278		381
279	while (my ($cpath, $v) = each %$v) {	382	while (my ($cpath, $v) = each %$v) {
280	next unless $cpath eq substr $upath, 0, length $cpath;	383	next unless $cpath eq substr $upath, 0, length $cpath;
281		384
282	while (my ($k, $v) = each %$v) {	385	while (my ($k, $v) = each %$v) {
283	next if $scheme ne "https" && exists $v->{secure};	386	next if $uscheme ne "https" && exists $v->{secure};
		387	my $value = $v->{value};
		388	$value =~ s/([\\"])/\\$1/g;
284	push @cookie, "$k=$v->{value}";	389	push @cookie, "$k=\"$value\"";
285	}	390	}
286	}	391	}
287	}	392	}
288		393
289	$hdr{cookie} = join "; ", @cookie	394	$hdr{cookie} = join "; ", @cookie
290	if @cookie;	395	if @cookie;
291	}	396	}
292		397
293	my ($rhost, $rport, $rpath); # request host, port, path	398	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
294		399
295	if ($proxy) {	400	if ($proxy) {
296	($rhost, $rport, $scheme) = @$proxy;	401	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
297	$rpath = $url;	402
		403	# don't support https requests over https-proxy transport,
		404	# can't be done with tls as spec'ed, unless you double-encrypt.
		405	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
298	} else {	406	} else {
299	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	407	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
300	$hdr{host} = $uhost;
301	}	408	}
		409
		410	$hdr{"user-agent"} \|\|= $USERAGENT;
		411	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
302		412
303	$hdr{"content-length"} = length $arg{body};	413	$hdr{"content-length"} = length $arg{body};
304		414
305	my %state = (connect_guard => 1);	415	my %state = (connect_guard => 1);
306		416
…		…
309		419
310	return unless $state{connect_guard};	420	return unless $state{connect_guard};
311		421
312	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	422	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
313	$state{fh} = shift	423	$state{fh} = shift
		424	or do {
		425	my $err = "$!";
		426	%state = ();
314	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	427	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
		428	};
315		429
316	delete $state{connect_guard}; # reduce memory usage, save a tree	430	pop; # free memory, save a tree
		431
		432	return unless delete $state{connect_guard};
317		433
318	# get handle	434	# get handle
319	$state{handle} = new AnyEvent::Handle	435	$state{handle} = new AnyEvent::Handle
320	fh => $state{fh},	436	fh => $state{fh},
321	($scheme eq "https" ? (tls => "connect") : ());	437	timeout => $timeout,
		438	peername => $rhost,
		439	tls_ctx => $arg{tls_ctx};
322		440
323	# limit the number of persistent connections	441	# limit the number of persistent connections
		442	# keepalive not yet supported
324	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	443	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
325	++$KA_COUNT{$_[1]};	444	++$KA_COUNT{$_[1]};
326	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	445	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		446	--$KA_COUNT{$_[1]}
		447	};
327	$hdr{connection} = "keep-alive";	448	$hdr{connection} = "keep-alive";
328	delete $hdr{connection}; # keep-alive not yet supported
329	} else {	449	} else {
330	delete $hdr{connection};	450	delete $hdr{connection};
331	}	451	}
332		452
333	# (re-)configure handle	453	# (re-)configure handle
334	$state{handle}->timeout ($timeout);
335	$state{handle}->on_error (sub {	454	$state{handle}->on_error (sub {
336	my $errno = "$!";
337	%state = ();	455	%state = ();
338	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });	456	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
339	});	457	});
340	$state{handle}->on_eof (sub {	458	$state{handle}->on_eof (sub {
341	%state = ();	459	%state = ();
342	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });	460	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
343	});	461	});
344		462
		463	$state{handle}->starttls ("connect") if $rscheme eq "https";
		464
		465	# handle actual, non-tunneled, request
		466	my $handle_actual_request = sub {
		467	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		468
345	# send request	469	# send request
346	$state{handle}->push_write (	470	$state{handle}->push_write (
347	"$method $rpath HTTP/1.0\015\012"	471	"$method $rpath HTTP/1.0\015\012"
348	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	472	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
349	. "\015\012"	473	. "\015\012"
350	. (delete $arg{body})	474	. (delete $arg{body})
351	);
352
353	%hdr = (); # reduce memory usage, save a kitten
354
355	# status line
356	$state{handle}->push_read (line => qr/\015?\012/, sub {
357	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
358	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
359
360	my %hdr = ( # response headers
361	HTTPVersion => "\x00$1",
362	Status => "\x00$2",
363	Reason => "\x00$3",
364	URL => "\x00$url"
365	);	475	);
366		476
		477	%hdr = (); # reduce memory usage, save a kitten
		478
		479	# status line
		480	$state{handle}->push_read (line => $qr_nl, sub {
		481	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		482	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		483
		484	my %hdr = ( # response headers
		485	HTTPVersion => ",$1",
		486	Status => ",$2",
		487	Reason => ",$3",
		488	URL => ",$url"
		489	);
		490
367	# headers, could be optimized a bit	491	# headers, could be optimized a bit
368	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	492	$state{handle}->unshift_read (line => $qr_nlnl, sub {
369	for ("$_[1]\012") {	493	for ("$_[1]\012") {
370	# we support spaces in field names, as lotus domino	494	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
371	# creates them.	495
		496	# things seen, not parsed:
		497	# p3pP="NON CUR OTPi OUR NOR UNI"
		498
372	$hdr{lc $1} .= "\x00$2"	499	$hdr{lc $1} .= ",$2"
373	while /\G	500	while /\G
374	([^:\000-\037]+):	501	([^:\000-\037]*):
375	[\011\040]*	502	[\011\040]*
376	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	503	((?: [^\012]+ \| \012[\011\040] )*)
377	\015?\012	504	\012
378	/gxc;	505	/gxc;
379		506
380	/\G$/	507	/\G$/
381	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	508	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
382	}	509	}
383		510
384	substr $_, 0, 1, ""	511	substr $_, 0, 1, ""
385	for values %hdr;	512	for values %hdr;
386		513
387	my $finish = sub {	514	# redirect handling
388	%state = ();	515	# microsoft and other shitheads don't give a shit for following standards,
		516	# try to support some common forms of broken Location headers.
		517	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		518	$hdr{location} =~ s/^\.\/+//;
389		519
390	# set-cookie processing	520	my $url = "$rscheme://$uhost:$uport";
391	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
392	for (split /\x00/, $hdr{"set-cookie"}) {
393	my ($cookie, @arg) = split /;\s*/;
394	my ($name, $value) = split /=/, $cookie, 2;
395	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
396
397	my $cdom = (delete $kv{domain}) \|\| $uhost;
398	my $cpath = (delete $kv{path}) \|\| "/";
399
400	$cdom =~ s/^.?/./; # make sure it starts with a "."
401		521
402	next if $cdom =~ /\.$/;	522	unless ($hdr{location} =~ s/^\///) {
403		523	$url .= $upath;
404	# this is not rfc-like and not netscape-like. go figure.	524	$url =~ s/\/[^\/]*$//;
405	my $ndots = $cdom =~ y/.//;	525	}
406	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	526
407		527	$hdr{location} = "$url/$hdr{location}";
		528	}
		529
		530	my $redirect;
		531
		532	if ($recurse) {
		533	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		534	# apparently, mozilla et al. just change POST to GET here
		535	# more research is needed before we do the same
408	# store it	536	$redirect = 1;
409	$arg{cookie_jar}{version} = 1;	537	} elsif ($hdr{Status} == 303) {
410	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	538	# even http/1.1 is unclear on how to mutate the method
		539	$method = "GET" unless $method eq "HEAD";
		540	$redirect = 1;
		541	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		542	$redirect = 1;
411	}	543	}
412	}	544	}
413		545
414	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	546	my $finish = sub {
415	# microsoft and other assholes don't give a shit for following standards,	547	$state{handle}->destroy if $state{handle};
416	# try to support a common form of broken Location header.	548	%state = ();
417	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
418		549
		550	# set-cookie processing
		551	if ($arg{cookie_jar}) {
		552	for ($_[1]{"set-cookie"}) {
		553	# parse NAME=VALUE
		554	my @kv;
		555
		556	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		557	my $name = $1;
		558	my $value = $3;
		559
		560	unless ($value) {
		561	$value = $2;
		562	$value =~ s/\\(.)/$1/gs;
		563	}
		564
		565	push @kv, $name => $value;
		566
		567	last unless /\G\s*;/gc;
		568	}
		569
		570	last unless @kv;
		571
		572	my $name = shift @kv;
		573	my %kv = (value => shift @kv, @kv);
		574
		575	my $cdom;
		576	my $cpath = (delete $kv{path}) \|\| "/";
		577
		578	if (exists $kv{domain}) {
		579	$cdom = delete $kv{domain};
		580
		581	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		582
		583	next if $cdom =~ /\.$/;
		584
		585	# this is not rfc-like and not netscape-like. go figure.
		586	my $ndots = $cdom =~ y/.//;
		587	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		588	} else {
		589	$cdom = $uhost;
		590	}
		591
		592	# store it
		593	$arg{cookie_jar}{version} = 1;
		594	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		595
		596	redo if /\G\s*,/gc;
		597	}
		598	}
		599
		600	if ($redirect) {
		601	# we ignore any errors, as it is very common to receive
		602	# Content-Length != 0 but no actual body
		603	# we also access %hdr, as $_[1] might be an erro
419	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	604	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
		605	} else {
		606	$cb->($_[0], $_[1]);
		607	}
		608	};
		609
		610	my $len = $hdr{"content-length"};
		611
		612	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		613	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		614	} elsif (
		615	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		616	or $method eq "HEAD"
		617	or (defined $len && !$len)
		618	) {
		619	# no body
		620	$finish->("", \%hdr);
420	} else {	621	} else {
421	$cb->($_[0], $_[1]);	622	# body handling, four different code paths
		623	# for want_body_handle, on_body (2x), normal (2x)
		624	# we might read too much here, but it does not matter yet (no pers. connections)
		625	if (!$redirect && $arg{want_body_handle}) {
		626	$_[0]->on_eof (undef);
		627	$_[0]->on_error (undef);
		628	$_[0]->on_read (undef);
		629
		630	$finish->(delete $state{handle}, \%hdr);
		631
		632	} elsif ($arg{on_body}) {
		633	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		634	if ($len) {
		635	$_[0]->on_eof (undef);
		636	$_[0]->on_read (sub {
		637	$len -= length $_[0]{rbuf};
		638
		639	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		640	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		641
		642	$len > 0
		643	or $finish->("", \%hdr);
		644	});
		645	} else {
		646	$_[0]->on_eof (sub {
		647	$finish->("", \%hdr);
		648	});
		649	$_[0]->on_read (sub {
		650	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		651	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		652	});
		653	}
		654	} else {
		655	$_[0]->on_eof (undef);
		656
		657	if ($len) {
		658	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		659	$_[0]->on_read (sub {
		660	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		661	if $len <= length $_[0]{rbuf};
		662	});
		663	} else {
		664	$_[0]->on_error (sub {
		665	$! == Errno::EPIPE \|\| !$!
		666	? $finish->(delete $_[0]{rbuf}, \%hdr)
		667	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		668	});
		669	$_[0]->on_read (sub { });
		670	}
		671	}
422	}	672	}
423	};	673	});
		674	});
		675	};
424		676
425	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	677	# now handle proxy-CONNECT method
426	$finish->(undef, \%hdr);	678	if ($proxy && $uscheme eq "https") {
		679	# oh dear, we have to wrap it into a connect request
		680
		681	# maybe re-use $uauthority with patched port?
		682	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		683	$state{handle}->push_read (line => $qr_nlnl, sub {
		684	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		685	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		686
		687	if ($2 == 200) {
		688	$rpath = $upath;
		689	&$handle_actual_request;
427	} else {	690	} else {
428	if (exists $hdr{"content-length"}) {	691	%state = ();
429	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	692	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
430	# could cache persistent connection now
431	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
432	# but we don't, due to misdesigns, this is annoyingly complex
433	};
434
435	$finish->($_[1], \%hdr);
436	});
437	} else {
438	# too bad, need to read until we get an error or EOF,
439	# no way to detect winged data.
440	$_[0]->on_error (sub {
441	$finish->($_[0]{rbuf}, \%hdr);
442	});
443	$_[0]->on_eof (undef);
444	$_[0]->on_read (sub { });
445	}
446	}	693	}
447	});	694	});
		695	} else {
		696	&$handle_actual_request;
448	});	697	}
		698
449	}, sub {	699	}, sub {
450	$timeout	700	$timeout
451	};	701	};
452	};	702	};
453		703
…		…
463	unshift @_, "HEAD";	713	unshift @_, "HEAD";
464	&http_request	714	&http_request
465	}	715	}
466		716
467	sub http_post($$@) {	717	sub http_post($$@) {
		718	my $url = shift;
468	unshift @_, "POST", "body";	719	unshift @_, "POST", $url, "body";
469	&http_request	720	&http_request
470	}	721	}
471		722
472	=back	723	=back
473		724
…		…
485	The default value for the C<recurse> request parameter (default: C<10>).	736	The default value for the C<recurse> request parameter (default: C<10>).
486		737
487	=item $AnyEvent::HTTP::USERAGENT	738	=item $AnyEvent::HTTP::USERAGENT
488		739
489	The default value for the C<User-Agent> header (the default is	740	The default value for the C<User-Agent> header (the default is
490	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	741	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
491		742
492	=item $AnyEvent::HTTP::MAX_PERSISTENT	743	=item $AnyEvent::HTTP::MAX_PER_HOST
493		744
494	The maximum number of persistent connections to keep open (default: 8).	745	The maximum number of concurrent conenctions to the same host (identified
		746	by the hostname). If the limit is exceeded, then the additional requests
		747	are queued until previous connections are closed.
495		748
496	Not implemented currently.	749	The default value for this is C<4>, and it is highly advisable to not
497		750	increase it.
498	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
499
500	The maximum time to cache a persistent connection, in seconds (default: 2).
501
502	Not implemented currently.
503		751
504	=item $AnyEvent::HTTP::ACTIVE	752	=item $AnyEvent::HTTP::ACTIVE
505		753
506	The number of active connections. This is not the number of currently	754	The number of active connections. This is not the number of currently
507	running requests, but the number of currently open and non-idle TCP	755	running requests, but the number of currently open and non-idle TCP
…		…
525	=head1 AUTHOR	773	=head1 AUTHOR
526		774
527	Marc Lehmann <schmorp@schmorp.de>	775	Marc Lehmann <schmorp@schmorp.de>
528	http://home.schmorp.de/	776	http://home.schmorp.de/
529		777
		778	With many thanks to Дмитрий Шалашов, who provided countless
		779	testcases and bugreports.
		780
530	=cut	781	=cut
531		782
532	1	783	1
533		784

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.19 by elmex, Mon Jun 9 13:02:13 2008 UTC vs. Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.19 by elmex, Mon Jun 9 13:02:13 2008 UTC vs.
Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC