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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.24 by root, Wed Jul 2 01:30:33 2008 UTC vs.
Revision 1.46 by root, Sat Jul 25 01:29:09 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 = '1.03';	53	our $VERSION = '1.41';
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>, but in case of streaming APIs, where HTTP is
		227	only used to create a connection, C<want_body_handle> is the better
		228	alternative, as it allows you to install your own event handler, reducing
		229	resource usage.
		230
		231	=item want_body_handle => $enable
		232
		233	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		234	changes considerably: after parsing the headers, and instead of
		235	downloading the body (if any), the completion callback will be
		236	called. Instead of the C<$body> argument containing the body data, the
		237	callback will receive the L<AnyEvent::Handle> object associated with the
		238	connection. In error cases, C<undef> will be passed. When there is no body
		239	(e.g. status C<304>), the empty string will be passed.
		240
		241	The handle object might or might not be in TLS mode, might be connected to
		242	a proxy, be a persistent connection etc., and configured in unspecified
		243	ways. The user is responsible for this handle (it will not be used by this
		244	module anymore).
		245
		246	This is useful with some push-type services, where, after the initial
		247	headers, an interactive protocol is used (typical example would be the
		248	push-style twitter API which starts a JSON/XML stream).
		249
		250	If you think you need this, first have a look at C<on_body>, to see if
		251	that doesn't solve your problem in a better way.
171		252
172	=back	253	=back
173		254
174	Example: make a simple HTTP GET request for http://www.nethype.de/	255	Example: make a simple HTTP GET request for http://www.nethype.de/
175		256
…		…
188	my ($body, $hdr) = @_;	269	my ($body, $hdr) = @_;
189	use Data::Dumper;	270	use Data::Dumper;
190	print Dumper $hdr;	271	print Dumper $hdr;
191	}	272	}
192	;	273	;
		274
		275	Example: make another simple HTTP GET request, but immediately try to
		276	cancel it.
		277
		278	my $request = http_request GET => "http://www.nethype.de/", sub {
		279	my ($body, $hdr) = @_;
		280	print "$body\n";
		281	};
		282
		283	undef $request;
193		284
194	=cut	285	=cut
195		286
196	sub _slot_schedule;	287	sub _slot_schedule;
197	sub _slot_schedule($) {	288	sub _slot_schedule($) {
…		…
221	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	312	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
222		313
223	_slot_schedule $_[0];	314	_slot_schedule $_[0];
224	}	315	}
225		316
		317	our $qr_nl = qr{\015?\012};
		318	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		319
		320	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		321	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		322
226	sub http_request($$@) {	323	sub http_request($$@) {
227	my $cb = pop;	324	my $cb = pop;
228	my ($method, $url, %arg) = @_;	325	my ($method, $url, %arg) = @_;
229		326
230	my %hdr;	327	my %hdr;
		328
		329	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		330	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
231		331
232	$method = uc $method;	332	$method = uc $method;
233		333
234	if (my $hdr = $arg{headers}) {	334	if (my $hdr = $arg{headers}) {
235	while (my ($k, $v) = each %$hdr) {	335	while (my ($k, $v) = each %$hdr) {
…		…
237	}	337	}
238	}	338	}
239		339
240	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	340	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
241		341
242	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	342	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
243	if $recurse < 0;	343	if $recurse < 0;
244		344
245	my $proxy = $arg{proxy} \|\| $PROXY;	345	my $proxy = $arg{proxy} \|\| $PROXY;
246	my $timeout = $arg{timeout} \|\| $TIMEOUT;	346	my $timeout = $arg{timeout} \|\| $TIMEOUT;
247		347
248	$hdr{"user-agent"} \|\|= $USERAGENT;
249
250	my ($scheme, $authority, $upath, $query, $fragment) =	348	my ($uscheme, $uauthority, $upath, $query, $fragment) =
251	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	349	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
252		350
253	$scheme = lc $scheme;	351	$uscheme = lc $uscheme;
254		352
255	my $uport = $scheme eq "http" ? 80	353	my $uport = $uscheme eq "http" ? 80
256	: $scheme eq "https" ? 443	354	: $uscheme eq "https" ? 443
257	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	355	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
258		356
259	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
260
261	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	357	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
262	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	358	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
263		359
264	my $uhost = $1;	360	my $uhost = $1;
265	$uport = $2 if defined $2;	361	$uport = $2 if defined $2;
266		362
		363	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
		364
267	$uhost =~ s/^\[(.*)\]$/$1/;	365	$uhost =~ s/^\[(.*)\]$/$1/;
268	$upath .= "?$query" if length $query;	366	$upath .= "?$query" if length $query;
269		367
270	$upath =~ s%^/?%/%;	368	$upath =~ s%^/?%/%;
271		369
272	# cookie processing	370	# cookie processing
273	if (my $jar = $arg{cookie_jar}) {	371	if (my $jar = $arg{cookie_jar}) {
274	%$jar = () if $jar->{version} < 1;	372	%$jar = () if $jar->{version} != 1;
275		373
276	my @cookie;	374	my @cookie;
277		375
278	while (my ($chost, $v) = each %$jar) {	376	while (my ($chost, $v) = each %$jar) {
		377	if ($chost =~ /^\./) {
279	next unless $chost eq substr $uhost, -length $chost;	378	next unless $chost eq substr $uhost, -length $chost;
280	next unless $chost =~ /^\./;	379	} elsif ($chost =~ /\./) {
		380	next unless $chost eq $uhost;
		381	} else {
		382	next;
		383	}
281		384
282	while (my ($cpath, $v) = each %$v) {	385	while (my ($cpath, $v) = each %$v) {
283	next unless $cpath eq substr $upath, 0, length $cpath;	386	next unless $cpath eq substr $upath, 0, length $cpath;
284		387
285	while (my ($k, $v) = each %$v) {	388	while (my ($k, $v) = each %$v) {
286	next if $scheme ne "https" && exists $v->{secure};	389	next if $uscheme ne "https" && exists $v->{secure};
		390	my $value = $v->{value};
		391	$value =~ s/([\\"])/\\$1/g;
287	push @cookie, "$k=$v->{value}";	392	push @cookie, "$k=\"$value\"";
288	}	393	}
289	}	394	}
290	}	395	}
291		396
292	$hdr{cookie} = join "; ", @cookie	397	$hdr{cookie} = join "; ", @cookie
293	if @cookie;	398	if @cookie;
294	}	399	}
295		400
296	my ($rhost, $rport, $rpath); # request host, port, path	401	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
297		402
298	if ($proxy) {	403	if ($proxy) {
299	($rhost, $rport, $scheme) = @$proxy;	404	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
300	$rpath = $url;	405
		406	# don't support https requests over https-proxy transport,
		407	# can't be done with tls as spec'ed, unless you double-encrypt.
		408	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
301	} else {	409	} else {
302	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	410	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
303	$hdr{host} = $uhost;
304	}	411	}
		412
		413	$hdr{"user-agent"} \|\|= $USERAGENT;
		414	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
305		415
306	$hdr{"content-length"} = length $arg{body};	416	$hdr{"content-length"} = length $arg{body};
307		417
308	my %state = (connect_guard => 1);	418	my %state = (connect_guard => 1);
309		419
…		…
312		422
313	return unless $state{connect_guard};	423	return unless $state{connect_guard};
314		424
315	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	425	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
316	$state{fh} = shift	426	$state{fh} = shift
		427	or do {
		428	my $err = "$!";
		429	%state = ();
317	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	430	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
		431	};
318		432
319	delete $state{connect_guard}; # reduce memory usage, save a tree	433	pop; # free memory, save a tree
		434
		435	return unless delete $state{connect_guard};
320		436
321	# get handle	437	# get handle
322	$state{handle} = new AnyEvent::Handle	438	$state{handle} = new AnyEvent::Handle
323	fh => $state{fh},	439	fh => $state{fh},
324	($scheme eq "https" ? (tls => "connect") : ());	440	timeout => $timeout,
		441	peername => $rhost,
		442	tls_ctx => $arg{tls_ctx};
325		443
326	# limit the number of persistent connections	444	# limit the number of persistent connections
		445	# keepalive not yet supported
327	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	446	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
328	++$KA_COUNT{$_[1]};	447	++$KA_COUNT{$_[1]};
329	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	448	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		449	--$KA_COUNT{$_[1]}
		450	};
330	$hdr{connection} = "keep-alive";	451	$hdr{connection} = "keep-alive";
331	delete $hdr{connection}; # keep-alive not yet supported
332	} else {	452	} else {
333	delete $hdr{connection};	453	delete $hdr{connection};
334	}	454	}
335		455
336	# (re-)configure handle	456	# (re-)configure handle
337	$state{handle}->timeout ($timeout);
338	$state{handle}->on_error (sub {	457	$state{handle}->on_error (sub {
339	my $errno = "$!";
340	%state = ();	458	%state = ();
341	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });	459	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
342	});	460	});
343	$state{handle}->on_eof (sub {	461	$state{handle}->on_eof (sub {
344	%state = ();	462	%state = ();
345	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });	463	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
346	});	464	});
347		465
		466	$state{handle}->starttls ("connect") if $rscheme eq "https";
		467
		468	# handle actual, non-tunneled, request
		469	my $handle_actual_request = sub {
		470	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		471
348	# send request	472	# send request
349	$state{handle}->push_write (	473	$state{handle}->push_write (
350	"$method $rpath HTTP/1.0\015\012"	474	"$method $rpath HTTP/1.0\015\012"
351	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	475	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
352	. "\015\012"	476	. "\015\012"
353	. (delete $arg{body})	477	. (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	);	478	);
369		479
		480	%hdr = (); # reduce memory usage, save a kitten
		481
		482	# status line
		483	$state{handle}->push_read (line => $qr_nl, sub {
		484	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		485	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		486
		487	my %hdr = ( # response headers
		488	HTTPVersion => ",$1",
		489	Status => ",$2",
		490	Reason => ",$3",
		491	URL => ",$url"
		492	);
		493
370	# headers, could be optimized a bit	494	# headers, could be optimized a bit
371	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	495	$state{handle}->unshift_read (line => $qr_nlnl, sub {
372	for ("$_[1]\012") {	496	for ("$_[1]") {
373	# we support spaces in field names, as lotus domino	497	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
374	# creates them.	498
		499	# things seen, not parsed:
		500	# p3pP="NON CUR OTPi OUR NOR UNI"
		501
375	$hdr{lc $1} .= "\x00$2"	502	$hdr{lc $1} .= ",$2"
376	while /\G	503	while /\G
377	([^:\000-\037]+):	504	([^:\000-\037]*):
378	[\011\040]*	505	[\011\040]*
379	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	506	((?: [^\012]+ \| \012[\011\040] )*)
380	\015?\012	507	\012
381	/gxc;	508	/gxc;
382		509
383	/\G$/	510	/\G$/
384	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	511	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
385	}	512	}
386		513
387	substr $_, 0, 1, ""	514	substr $_, 0, 1, ""
388	for values %hdr;	515	for values %hdr;
389		516
390	my $finish = sub {	517	# redirect handling
391	%state = ();	518	# microsoft and other shitheads don't give a shit for following standards,
		519	# try to support some common forms of broken Location headers.
		520	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		521	$hdr{location} =~ s/^\.\/+//;
392		522
393	# set-cookie processing	523	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		524
405	next if $cdom =~ /\.$/;	525	unless ($hdr{location} =~ s/^\///) {
406		526	$url .= $upath;
407	# this is not rfc-like and not netscape-like. go figure.	527	$url =~ s/\/[^\/]*$//;
408	my $ndots = $cdom =~ y/.//;	528	}
409	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	529
410		530	$hdr{location} = "$url/$hdr{location}";
		531	}
		532
		533	my $redirect;
		534
		535	if ($recurse) {
		536	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		537	# apparently, mozilla et al. just change POST to GET here
		538	# more research is needed before we do the same
411	# store it	539	$redirect = 1;
412	$arg{cookie_jar}{version} = 1;	540	} elsif ($hdr{Status} == 303) {
413	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	541	# even http/1.1 is unclear on how to mutate the method
		542	$method = "GET" unless $method eq "HEAD";
		543	$redirect = 1;
		544	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		545	$redirect = 1;
414	}	546	}
415	}	547	}
416		548
417	# microsoft and other assholes don't give a shit for following standards,	549	my $finish = sub {
418	# try to support a common form of broken Location header.	550	$state{handle}->destroy if $state{handle};
419	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%	551	%state = ();
		552
		553	# set-cookie processing
		554	if ($arg{cookie_jar}) {
		555	for ($_[1]{"set-cookie"}) {
		556	# parse NAME=VALUE
		557	my @kv;
		558
		559	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		560	my $name = $1;
		561	my $value = $3;
		562
		563	unless ($value) {
		564	$value = $2;
		565	$value =~ s/\\(.)/$1/gs;
		566	}
		567
		568	push @kv, $name => $value;
		569
		570	last unless /\G\s*;/gc;
		571	}
		572
		573	last unless @kv;
		574
		575	my $name = shift @kv;
		576	my %kv = (value => shift @kv, @kv);
		577
		578	my $cdom;
		579	my $cpath = (delete $kv{path}) \|\| "/";
		580
420	if exists $_[1]{location};	581	if (exists $kv{domain}) {
		582	$cdom = delete $kv{domain};
		583
		584	$cdom =~ s/^\.?/./; # make sure it starts with a "."
421		585
422	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {	586	next if $cdom =~ /\.$/;
423	# apparently, mozilla et al. just change POST to GET here	587
424	# more research is needed before we do the same	588	# this is not rfc-like and not netscape-like. go figure.
425	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	589	my $ndots = $cdom =~ y/.//;
426	} elsif ($_[1]{Status} == 303 && $recurse) {	590	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
427	# even http/1.1 is unlear on how to mutate the method	591	} else {
428	$method = "GET" unless $method eq "HEAD";	592	$cdom = $uhost;
		593	}
		594
		595	# store it
		596	$arg{cookie_jar}{version} = 1;
		597	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		598
		599	redo if /\G\s*,/gc;
		600	}
		601	}
		602
		603	if ($redirect) {
		604	# we ignore any errors, as it is very common to receive
		605	# Content-Length != 0 but no actual body
		606	# we also access %hdr, as $_[1] might be an erro
429	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	607	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
430	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {	608	} else {
431	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	609	$cb->($_[0], $_[1]);
		610	}
		611	};
		612
		613	my $len = $hdr{"content-length"};
		614
		615	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		616	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		617	} elsif (
		618	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		619	or $method eq "HEAD"
		620	or (defined $len && !$len)
		621	) {
		622	# no body
		623	$finish->("", \%hdr);
432	} else {	624	} else {
433	$cb->($_[0], $_[1]);	625	# body handling, four different code paths
		626	# for want_body_handle, on_body (2x), normal (2x)
		627	# we might read too much here, but it does not matter yet (no pers. connections)
		628	if (!$redirect && $arg{want_body_handle}) {
		629	$_[0]->on_eof (undef);
		630	$_[0]->on_error (undef);
		631	$_[0]->on_read (undef);
		632
		633	$finish->(delete $state{handle}, \%hdr);
		634
		635	} elsif ($arg{on_body}) {
		636	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		637	if ($len) {
		638	$_[0]->on_eof (undef);
		639	$_[0]->on_read (sub {
		640	$len -= length $_[0]{rbuf};
		641
		642	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		643	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		644
		645	$len > 0
		646	or $finish->("", \%hdr);
		647	});
		648	} else {
		649	$_[0]->on_eof (sub {
		650	$finish->("", \%hdr);
		651	});
		652	$_[0]->on_read (sub {
		653	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		654	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		655	});
		656	}
		657	} else {
		658	$_[0]->on_eof (undef);
		659
		660	if ($len) {
		661	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		662	$_[0]->on_read (sub {
		663	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		664	if $len <= length $_[0]{rbuf};
		665	});
		666	} else {
		667	$_[0]->on_error (sub {
		668	$! == Errno::EPIPE \|\| !$!
		669	? $finish->(delete $_[0]{rbuf}, \%hdr)
		670	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		671	});
		672	$_[0]->on_read (sub { });
		673	}
		674	}
434	}	675	}
435	};	676	});
		677	});
		678	};
436		679
437	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	680	# now handle proxy-CONNECT method
438	$finish->(undef, \%hdr);	681	if ($proxy && $uscheme eq "https") {
		682	# oh dear, we have to wrap it into a connect request
		683
		684	# maybe re-use $uauthority with patched port?
		685	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		686	$state{handle}->push_read (line => $qr_nlnl, sub {
		687	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		688	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		689
		690	if ($2 == 200) {
		691	$rpath = $upath;
		692	&$handle_actual_request;
439	} else {	693	} else {
440	if (exists $hdr{"content-length"}) {	694	%state = ();
441	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	695	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
442	# could cache persistent connection now
443	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
444	# but we don't, due to misdesigns, this is annoyingly complex
445	};
446
447	$finish->($_[1], \%hdr);
448	});
449	} else {
450	# too bad, need to read until we get an error or EOF,
451	# no way to detect winged data.
452	$_[0]->on_error (sub {
453	$finish->($_[0]{rbuf}, \%hdr);
454	});
455	$_[0]->on_eof (undef);
456	$_[0]->on_read (sub { });
457	}
458	}	696	}
459	});	697	});
		698	} else {
		699	&$handle_actual_request;
460	});	700	}
		701
461	}, sub {	702	}, sub {
462	$timeout	703	$timeout
463	};	704	};
464	};	705	};
465		706
…		…
498	The default value for the C<recurse> request parameter (default: C<10>).	739	The default value for the C<recurse> request parameter (default: C<10>).
499		740
500	=item $AnyEvent::HTTP::USERAGENT	741	=item $AnyEvent::HTTP::USERAGENT
501		742
502	The default value for the C<User-Agent> header (the default is	743	The default value for the C<User-Agent> header (the default is
503	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	744	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
504		745
505	=item $AnyEvent::HTTP::MAX_PERSISTENT	746	=item $AnyEvent::HTTP::MAX_PER_HOST
506		747
507	The maximum number of persistent connections to keep open (default: 8).	748	The maximum number of concurrent conenctions to the same host (identified
		749	by the hostname). If the limit is exceeded, then the additional requests
		750	are queued until previous connections are closed.
508		751
509	Not implemented currently.	752	The default value for this is C<4>, and it is highly advisable to not
510		753	increase it.
511	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
512
513	The maximum time to cache a persistent connection, in seconds (default: 2).
514
515	Not implemented currently.
516		754
517	=item $AnyEvent::HTTP::ACTIVE	755	=item $AnyEvent::HTTP::ACTIVE
518		756
519	The number of active connections. This is not the number of currently	757	The number of active connections. This is not the number of currently
520	running requests, but the number of currently open and non-idle TCP	758	running requests, but the number of currently open and non-idle TCP
…		…
538	=head1 AUTHOR	776	=head1 AUTHOR
539		777
540	Marc Lehmann <schmorp@schmorp.de>	778	Marc Lehmann <schmorp@schmorp.de>
541	http://home.schmorp.de/	779	http://home.schmorp.de/
542		780
		781	With many thanks to Дмитрий Шалашов, who provided countless
		782	testcases and bugreports.
		783
543	=cut	784	=cut
544		785
545	1	786	1
546		787

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.24 by root, Wed Jul 2 01:30:33 2008 UTC vs. Revision 1.46 by root, Sat Jul 25 01:29:09 2009 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.24 by root, Wed Jul 2 01:30:33 2008 UTC vs.
Revision 1.46 by root, Sat Jul 25 01:29:09 2009 UTC