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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.21 by root, Thu Jun 12 11:56:09 2008 UTC vs.
Revision 1.43 by root, Mon Jul 6 03:03:12 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 4.452 ();
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 = '1.02';	53	our $VERSION = '1.12';
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<$method> (e.g. C<GET>, C<POST>). The URL
91	must be an absolute http or https URL.	92	must be an absolute http or https URL.
92		93
		94	When called in void context, nothing is returned. In other contexts,
		95	C<http_request> returns a "cancellation guard" - you have to keep the
		96	object at least alive until the callback get called. If the object gets
		97	destroyed before the callbakc is called, the request will be cancelled.
		98
93	The callback will be called with the response data as first argument	99	The callback will be called with the response body data as first argument
94	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if an error occured), and a hash-ref with response headers as
95	response headers as second argument.	101	second argument.
96		102
97	All the headers in that hash are lowercased. In addition to the response	103	All the headers in that hash are lowercased. In addition to the response
98	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
99	contain the three parts of the HTTP Status-Line of the same name. The	105	contain the three parts of the HTTP Status-Line of the same name. The
100	pseudo-header C<URL> contains the original URL (which can differ from the	106	pseudo-header C<URL> contains the original URL (which can differ from the
101	requested URL when following redirects).	107	requested URL when following redirects).
102		108
103	If the server sends a header multiple lines, then their contents will be	109	If the server sends a header multiple times, then their contents will be
104	joined together with C<\x00>.	110	joined together with a comma (C<,>), as per the HTTP spec.
105		111
106	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
107	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
108	and the C<Reason> pseudo-header will contain an error message.	114	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		115	message.
109		116
110	A typical callback might look like this:	117	A typical callback might look like this:
111		118
112	sub {	119	sub {
113	my ($body, $hdr) = @_;	120	my ($body, $hdr) = @_;
…		…
159	based on the original netscape specification.	166	based on the original netscape specification.
160		167
161	The C<$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
162	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
163	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
164	recommended, as expire times are currently being ignored.	171	recommended, as expiry times are currently being ignored.
165		172
166	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
167	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
168	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
169	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
170	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.
171		249
172	=back	250	=back
173		251
174	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/
175		253
…		…
188	my ($body, $hdr) = @_;	266	my ($body, $hdr) = @_;
189	use Data::Dumper;	267	use Data::Dumper;
190	print Dumper $hdr;	268	print Dumper $hdr;
191	}	269	}
192	;	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 $request;
193		281
194	=cut	282	=cut
195		283
196	sub _slot_schedule;	284	sub _slot_schedule;
197	sub _slot_schedule($) {	285	sub _slot_schedule($) {
…		…
221	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	309	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
222		310
223	_slot_schedule $_[0];	311	_slot_schedule $_[0];
224	}	312	}
225		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
226	sub http_request($$@) {	320	sub http_request($$@) {
227	my $cb = pop;	321	my $cb = pop;
228	my ($method, $url, %arg) = @_;	322	my ($method, $url, %arg) = @_;
229		323
230	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";
231		328
232	$method = uc $method;	329	$method = uc $method;
233		330
234	if (my $hdr = $arg{headers}) {	331	if (my $hdr = $arg{headers}) {
235	while (my ($k, $v) = each %$hdr) {	332	while (my ($k, $v) = each %$hdr) {
236	$hdr{lc $k} = $v;	333	$hdr{lc $k} = $v;
237	}	334	}
238	}	335	}
239		336
240	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	337	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
241		338
242	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	339	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
243	if $recurse < 0;	340	if $recurse < 0;
244		341
245	my $proxy = $arg{proxy} \|\| $PROXY;	342	my $proxy = $arg{proxy} \|\| $PROXY;
246	my $timeout = $arg{timeout} \|\| $TIMEOUT;	343	my $timeout = $arg{timeout} \|\| $TIMEOUT;
247		344
248	$hdr{"user-agent"} \|\|= $USERAGENT;
249
250	my ($scheme, $authority, $upath, $query, $fragment) =	345	my ($uscheme, $uauthority, $upath, $query, $fragment) =
251	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	346	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
252		347
253	$scheme = lc $scheme;	348	$uscheme = lc $uscheme;
254		349
255	my $uport = $scheme eq "http" ? 80	350	my $uport = $uscheme eq "http" ? 80
256	: $scheme eq "https" ? 443	351	: $uscheme eq "https" ? 443
257	: 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 });
258		353
259	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
260
261	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	354	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
262	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	355	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
263		356
264	my $uhost = $1;	357	my $uhost = $1;
265	$uport = $2 if defined $2;	358	$uport = $2 if defined $2;
266		359
		360	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
		361
267	$uhost =~ s/^\[(.*)\]$/$1/;	362	$uhost =~ s/^\[(.*)\]$/$1/;
268	$upath .= "?$query" if length $query;	363	$upath .= "?$query" if length $query;
269		364
270	$upath =~ s%^/?%/%;	365	$upath =~ s%^/?%/%;
271		366
272	# cookie processing	367	# cookie processing
273	if (my $jar = $arg{cookie_jar}) {	368	if (my $jar = $arg{cookie_jar}) {
274	%$jar = () if $jar->{version} < 1;	369	%$jar = () if $jar->{version} != 1;
275		370
276	my @cookie;	371	my @cookie;
277		372
278	while (my ($chost, $v) = each %$jar) {	373	while (my ($chost, $v) = each %$jar) {
		374	if ($chost =~ /^\./) {
279	next unless $chost eq substr $uhost, -length $chost;	375	next unless $chost eq substr $uhost, -length $chost;
280	next unless $chost =~ /^\./;	376	} elsif ($chost =~ /\./) {
		377	next unless $chost eq $uhost;
		378	} else {
		379	next;
		380	}
281		381
282	while (my ($cpath, $v) = each %$v) {	382	while (my ($cpath, $v) = each %$v) {
283	next unless $cpath eq substr $upath, 0, length $cpath;	383	next unless $cpath eq substr $upath, 0, length $cpath;
284		384
285	while (my ($k, $v) = each %$v) {	385	while (my ($k, $v) = each %$v) {
286	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;
287	push @cookie, "$k=$v->{value}";	389	push @cookie, "$k=\"$value\"";
288	}	390	}
289	}	391	}
290	}	392	}
291		393
292	$hdr{cookie} = join "; ", @cookie	394	$hdr{cookie} = join "; ", @cookie
293	if @cookie;	395	if @cookie;
294	}	396	}
295		397
296	my ($rhost, $rport, $rpath); # request host, port, path	398	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
297		399
298	if ($proxy) {	400	if ($proxy) {
299	($rhost, $rport, $scheme) = @$proxy;	401	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
300	$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" && $rscheme eq "https";
301	} else {	406	} else {
302	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	407	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
303	$hdr{host} = $uhost;
304	}	408	}
		409
		410	$hdr{"user-agent"} \|\|= $USERAGENT;
		411	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
305		412
306	$hdr{"content-length"} = length $arg{body};	413	$hdr{"content-length"} = length $arg{body};
307		414
308	my %state = (connect_guard => 1);	415	my %state = (connect_guard => 1);
309		416
…		…
312		419
313	return unless $state{connect_guard};	420	return unless $state{connect_guard};
314		421
315	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	422	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
316	$state{fh} = shift	423	$state{fh} = shift
317	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	424	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));
		425	pop; # free memory, save a tree
318		426
319	delete $state{connect_guard}; # reduce memory usage, save a tree	427	return unless delete $state{connect_guard};
320		428
321	# get handle	429	# get handle
322	$state{handle} = new AnyEvent::Handle	430	$state{handle} = new AnyEvent::Handle
323	fh => $state{fh},	431	fh => $state{fh},
324	($scheme eq "https" ? (tls => "connect") : ());	432	timeout => $timeout,
		433	peername => $rhost,
		434	tls_ctx => $arg{tls_ctx};
325		435
326	# limit the number of persistent connections	436	# limit the number of persistent connections
		437	# keepalive not yet supported
327	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	438	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
328	++$KA_COUNT{$_[1]};	439	++$KA_COUNT{$_[1]};
329	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	440	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		441	--$KA_COUNT{$_[1]}
		442	};
330	$hdr{connection} = "keep-alive";	443	$hdr{connection} = "keep-alive";
331	delete $hdr{connection}; # keep-alive not yet supported
332	} else {	444	} else {
333	delete $hdr{connection};	445	delete $hdr{connection};
334	}	446	}
335		447
336	# (re-)configure handle	448	# (re-)configure handle
337	$state{handle}->timeout ($timeout);
338	$state{handle}->on_error (sub {	449	$state{handle}->on_error (sub {
339	my $errno = "$!";
340	%state = ();	450	%state = ();
341	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });	451	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
342	});	452	});
343	$state{handle}->on_eof (sub {	453	$state{handle}->on_eof (sub {
344	%state = ();	454	%state = ();
345	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });	455	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
346	});	456	});
347		457
		458	$state{handle}->starttls ("connect") if $rscheme eq "https";
		459
		460	# handle actual, non-tunneled, request
		461	my $handle_actual_request = sub {
		462	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		463
348	# send request	464	# send request
349	$state{handle}->push_write (	465	$state{handle}->push_write (
350	"$method $rpath HTTP/1.0\015\012"	466	"$method $rpath HTTP/1.0\015\012"
351	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	467	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
352	. "\015\012"	468	. "\015\012"
353	. (delete $arg{body})	469	. (delete $arg{body})
354	);
355
356	%hdr = (); # reduce memory usage, save a kitten
357
358	# status line
359	$state{handle}->push_read (line => qr/\015?\012/, sub {
360	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
361	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
362
363	my %hdr = ( # response headers
364	HTTPVersion => "\x00$1",
365	Status => "\x00$2",
366	Reason => "\x00$3",
367	URL => "\x00$url"
368	);	470	);
369		471
		472	%hdr = (); # reduce memory usage, save a kitten
		473
		474	# status line
		475	$state{handle}->push_read (line => $qr_nl, sub {
		476	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		477	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		478
		479	my %hdr = ( # response headers
		480	HTTPVersion => ",$1",
		481	Status => ",$2",
		482	Reason => ",$3",
		483	URL => ",$url"
		484	);
		485
370	# headers, could be optimized a bit	486	# headers, could be optimized a bit
371	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	487	$state{handle}->unshift_read (line => $qr_nlnl, sub {
372	for ("$_[1]\012") {	488	for ("$_[1]\012") {
373	# we support spaces in field names, as lotus domino	489	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
374	# creates them.	490
		491	# things seen, not parsed:
		492	# p3pP="NON CUR OTPi OUR NOR UNI"
		493
375	$hdr{lc $1} .= "\x00$2"	494	$hdr{lc $1} .= ",$2"
376	while /\G	495	while /\G
377	([^:\000-\037]+):	496	([^:\000-\037]*):
378	[\011\040]*	497	[\011\040]*
379	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	498	((?: [^\012]+ \| \012[\011\040] )*)
380	\015?\012	499	\012
381	/gxc;	500	/gxc;
382		501
383	/\G$/	502	/\G$/
384	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	503	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
385	}	504	}
386		505
387	substr $_, 0, 1, ""	506	substr $_, 0, 1, ""
388	for values %hdr;	507	for values %hdr;
389		508
390	my $finish = sub {	509	# redirect handling
391	%state = ();	510	# microsoft and other shitheads don't give a shit for following standards,
		511	# try to support some common forms of broken Location headers.
		512	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		513	$hdr{location} =~ s/^\.\/+//;
392		514
393	# set-cookie processing	515	my $url = "$rscheme://$uhost:$uport";
394	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
395	for (split /\x00/, $hdr{"set-cookie"}) {
396	my ($cookie, @arg) = split /;\s*/;
397	my ($name, $value) = split /=/, $cookie, 2;
398	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
399
400	my $cdom = (delete $kv{domain}) \|\| $uhost;
401	my $cpath = (delete $kv{path}) \|\| "/";
402
403	$cdom =~ s/^.?/./; # make sure it starts with a "."
404		516
405	next if $cdom =~ /\.$/;	517	unless ($hdr{location} =~ s/^\///) {
406		518	$url .= $upath;
407	# this is not rfc-like and not netscape-like. go figure.	519	$url =~ s/\/[^\/]*$//;
408	my $ndots = $cdom =~ y/.//;	520	}
409	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	521
410		522	$hdr{location} = "$url/$hdr{location}";
		523	}
		524
		525	my $redirect;
		526
		527	if ($recurse) {
		528	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		529	# apparently, mozilla et al. just change POST to GET here
		530	# more research is needed before we do the same
411	# store it	531	$redirect = 1;
412	$arg{cookie_jar}{version} = 1;	532	} elsif ($hdr{Status} == 303) {
413	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	533	# even http/1.1 is unclear on how to mutate the method
		534	$method = "GET" unless $method eq "HEAD";
		535	$redirect = 1;
		536	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		537	$redirect = 1;
414	}	538	}
415	}	539	}
416		540
417	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	541	my $finish = sub {
418	# microsoft and other assholes don't give a shit for following standards,	542	$state{handle}->destroy if $state{handle};
419	# try to support a common form of broken Location header.	543	%state = ();
420	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
421		544
		545	# set-cookie processing
		546	if ($arg{cookie_jar}) {
		547	for ($_[1]{"set-cookie"}) {
		548	# parse NAME=VALUE
		549	my @kv;
		550
		551	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		552	my $name = $1;
		553	my $value = $3;
		554
		555	unless ($value) {
		556	$value = $2;
		557	$value =~ s/\\(.)/$1/gs;
		558	}
		559
		560	push @kv, $name => $value;
		561
		562	last unless /\G\s*;/gc;
		563	}
		564
		565	last unless @kv;
		566
		567	my $name = shift @kv;
		568	my %kv = (value => shift @kv, @kv);
		569
		570	my $cdom;
		571	my $cpath = (delete $kv{path}) \|\| "/";
		572
		573	if (exists $kv{domain}) {
		574	$cdom = delete $kv{domain};
		575
		576	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		577
		578	next if $cdom =~ /\.$/;
		579
		580	# this is not rfc-like and not netscape-like. go figure.
		581	my $ndots = $cdom =~ y/.//;
		582	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		583	} else {
		584	$cdom = $uhost;
		585	}
		586
		587	# store it
		588	$arg{cookie_jar}{version} = 1;
		589	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		590
		591	redo if /\G\s*,/gc;
		592	}
		593	}
		594
		595	if ($redirect) {
		596	# we ignore any errors, as it is very common to receive
		597	# Content-Length != 0 but no actual body
		598	# we also access %hdr, as $_[1] might be an erro
422	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	599	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
		600	} else {
		601	$cb->($_[0], $_[1]);
		602	}
		603	};
		604
		605	my $len = $hdr{"content-length"};
		606
		607	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		608	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		609	} elsif (
		610	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		611	or $method eq "HEAD"
		612	or (defined $len && !$len)
		613	) {
		614	# no body
		615	$finish->("", \%hdr);
423	} else {	616	} else {
424	$cb->($_[0], $_[1]);	617	# body handling, four different code paths
		618	# for want_body_handle, on_body (2x), normal (2x)
		619	# we might read too much here, but it does not matter yet (no pers. connections)
		620	if (!$redirect && $arg{want_body_handle}) {
		621	$_[0]->on_eof (undef);
		622	$_[0]->on_error (undef);
		623	$_[0]->on_read (undef);
		624
		625	$finish->(delete $state{handle}, \%hdr);
		626
		627	} elsif ($arg{on_body}) {
		628	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		629	if ($len) {
		630	$_[0]->on_eof (undef);
		631	$_[0]->on_read (sub {
		632	$len -= length $_[0]{rbuf};
		633
		634	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		635	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		636
		637	$len > 0
		638	or $finish->("", \%hdr);
		639	});
		640	} else {
		641	$_[0]->on_eof (sub {
		642	$finish->("", \%hdr);
		643	});
		644	$_[0]->on_read (sub {
		645	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		646	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		647	});
		648	}
		649	} else {
		650	$_[0]->on_eof (undef);
		651
		652	if ($len) {
		653	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		654	$_[0]->on_read (sub {
		655	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		656	if $len <= length $_[0]{rbuf};
		657	});
		658	} else {
		659	$_[0]->on_error (sub {
		660	$! == Errno::EPIPE \|\| !$!
		661	? $finish->(delete $_[0]{rbuf}, \%hdr)
		662	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		663	});
		664	$_[0]->on_read (sub { });
		665	}
		666	}
425	}	667	}
426	};	668	});
		669	});
		670	};
427		671
428	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	672	# now handle proxy-CONNECT method
429	$finish->(undef, \%hdr);	673	if ($proxy && $uscheme eq "https") {
		674	# oh dear, we have to wrap it into a connect request
		675
		676	# maybe re-use $uauthority with patched port?
		677	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		678	$state{handle}->push_read (line => $qr_nlnl, sub {
		679	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		680	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		681
		682	if ($2 == 200) {
		683	$rpath = $upath;
		684	&$handle_actual_request;
430	} else {	685	} else {
431	if (exists $hdr{"content-length"}) {	686	%state = ();
432	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	687	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
433	# could cache persistent connection now
434	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
435	# but we don't, due to misdesigns, this is annoyingly complex
436	};
437
438	$finish->($_[1], \%hdr);
439	});
440	} else {
441	# too bad, need to read until we get an error or EOF,
442	# no way to detect winged data.
443	$_[0]->on_error (sub {
444	$finish->($_[0]{rbuf}, \%hdr);
445	});
446	$_[0]->on_eof (undef);
447	$_[0]->on_read (sub { });
448	}
449	}	688	}
450	});	689	});
		690	} else {
		691	&$handle_actual_request;
451	});	692	}
		693
452	}, sub {	694	}, sub {
453	$timeout	695	$timeout
454	};	696	};
455	};	697	};
456		698
…		…
466	unshift @_, "HEAD";	708	unshift @_, "HEAD";
467	&http_request	709	&http_request
468	}	710	}
469		711
470	sub http_post($$@) {	712	sub http_post($$@) {
		713	my $url = shift;
471	unshift @_, "POST", "body";	714	unshift @_, "POST", $url, "body";
472	&http_request	715	&http_request
473	}	716	}
474		717
475	=back	718	=back
476		719
…		…
488	The default value for the C<recurse> request parameter (default: C<10>).	731	The default value for the C<recurse> request parameter (default: C<10>).
489		732
490	=item $AnyEvent::HTTP::USERAGENT	733	=item $AnyEvent::HTTP::USERAGENT
491		734
492	The default value for the C<User-Agent> header (the default is	735	The default value for the C<User-Agent> header (the default is
493	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	736	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
494		737
495	=item $AnyEvent::HTTP::MAX_PERSISTENT	738	=item $AnyEvent::HTTP::MAX_PER_HOST
496		739
497	The maximum number of persistent connections to keep open (default: 8).	740	The maximum number of concurrent conenctions to the same host (identified
		741	by the hostname). If the limit is exceeded, then the additional requests
		742	are queued until previous connections are closed.
498		743
499	Not implemented currently.	744	The default value for this is C<4>, and it is highly advisable to not
500		745	increase it.
501	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
502
503	The maximum time to cache a persistent connection, in seconds (default: 2).
504
505	Not implemented currently.
506		746
507	=item $AnyEvent::HTTP::ACTIVE	747	=item $AnyEvent::HTTP::ACTIVE
508		748
509	The number of active connections. This is not the number of currently	749	The number of active connections. This is not the number of currently
510	running requests, but the number of currently open and non-idle TCP	750	running requests, but the number of currently open and non-idle TCP
…		…
528	=head1 AUTHOR	768	=head1 AUTHOR
529		769
530	Marc Lehmann <schmorp@schmorp.de>	770	Marc Lehmann <schmorp@schmorp.de>
531	http://home.schmorp.de/	771	http://home.schmorp.de/
532		772
		773	With many thanks to Дмитрий Шалашов, who provided countless
		774	testcases and bugreports.
		775
533	=cut	776	=cut
534		777
535	1	778	1
536		779

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.21 by root, Thu Jun 12 11:56:09 2008 UTC vs. Revision 1.43 by root, Mon Jul 6 03:03:12 2009 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.21 by root, Thu Jun 12 11:56:09 2008 UTC vs.
Revision 1.43 by root, Mon Jul 6 03:03:12 2009 UTC