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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.30 by root, Thu Oct 23 02:46:20 2008 UTC vs.
Revision 1.50 by root, Tue Aug 11 13:20:42 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 = '1.05';	53	our $VERSION = '1.42';
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
…		…
94	When called in void context, nothing is returned. In other contexts,	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	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	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.	97	destroyed before the callbakc is called, the request will be cancelled.
98		98
99	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
100	(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
101	response headers as second argument.	101	second argument.
102		102
103	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
104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
105	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
106	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
107	requested URL when following redirects).	107	requested URL when following redirects).
108		108
109	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
110	joined together with C<\x00>.	110	joined together with a comma (C<,>), as per the HTTP spec.
111		111
112	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,
113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
114	and the C<Reason> pseudo-header will contain an error message.	114	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		115	message.
115		116
116	A typical callback might look like this:	117	A typical callback might look like this:
117		118
118	sub {	119	sub {
119	my ($body, $hdr) = @_;	120	my ($body, $hdr) = @_;
…		…
137		138
138	=item headers => hashref	139	=item headers => hashref
139		140
140	The request headers to use. Currently, C<http_request> may provide its	141	The request headers to use. Currently, C<http_request> may provide its
141	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
142	and will provide defaults for C<User-Agent:> and C<Referer:>.	143	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be
		144	suppressed by using C<undef> for these headers in which case they won't be
		145	sent at all).
143		146
144	=item timeout => $seconds	147	=item timeout => $seconds
145		148
146	The time-out to use for various stages - each connect attempt will reset	149	The time-out to use for various stages - each connect attempt will reset
147	the timeout, as will read or write activity. Default timeout is 5 minutes.	150	the timeout, as will read or write activity. Default timeout is 5 minutes.
…		…
149	=item proxy => [$host, $port[, $scheme]] or undef	152	=item proxy => [$host, $port[, $scheme]] or undef
150		153
151	Use the given http proxy for all requests. If not specified, then the	154	Use the given http proxy for all requests. If not specified, then the
152	default proxy (as specified by C<$ENV{http_proxy}>) is used.	155	default proxy (as specified by C<$ENV{http_proxy}>) is used.
153		156
154	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	157	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
155	HTTPS.	158	HTTPS.
156		159
157	=item body => $string	160	=item body => $string
158		161
159	The request body, usually empty. Will be-sent as-is (future versions of	162	The request body, usually empty. Will be-sent as-is (future versions of
…		…
165	based on the original netscape specification.	168	based on the original netscape specification.
166		169
167	The C<$hash_ref> must be an (initially empty) hash reference which will	170	The C<$hash_ref> must be an (initially empty) hash reference which will
168	get updated automatically. It is possible to save the cookie_jar to	171	get updated automatically. It is possible to save the cookie_jar to
169	persistent storage with something like JSON or Storable, but this is not	172	persistent storage with something like JSON or Storable, but this is not
170	recommended, as expire times are currently being ignored.	173	recommended, as expiry times are currently being ignored.
171		174
172	Note that this cookie implementation is not of very high quality, nor	175	Note that this cookie implementation is not of very high quality, nor
173	meant to be complete. If you want complete cookie management you have to	176	meant to be complete. If you want complete cookie management you have to
174	do that on your own. C<cookie_jar> is meant as a quick fix to get some	177	do that on your own. C<cookie_jar> is meant as a quick fix to get some
175	cookie-using sites working. Cookies are a privacy disaster, do not use	178	cookie-using sites working. Cookies are a privacy disaster, do not use
176	them unless required to.	179	them unless required to.
		180
		181	=item tls_ctx => $scheme \| $tls_ctx
		182
		183	Specifies the AnyEvent::TLS context to be used for https connections. This
		184	parameter follows the same rules as the C<tls_ctx> parameter to
		185	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		186	C<high> can be specified, which give you a predefined low-security (no
		187	verification, highest compatibility) and high-security (CA and common-name
		188	verification) TLS context.
		189
		190	The default for this option is C<low>, which could be interpreted as "give
		191	me the page, no matter what".
		192
		193	=item on_header => $callback->($headers)
		194
		195	When specified, this callback will be called with the header hash as soon
		196	as headers have been successfully received from the remote server (not on
		197	locally-generated errors).
		198
		199	It has to return either true (in which case AnyEvent::HTTP will continue),
		200	or false, in which case AnyEvent::HTTP will cancel the download (and call
		201	the finish callback with an error code of C<598>).
		202
		203	This callback is useful, among other things, to quickly reject unwanted
		204	content, which, if it is supposed to be rare, can be faster than first
		205	doing a C<HEAD> request.
		206
		207	Example: cancel the request unless the content-type is "text/html".
		208
		209	on_header => sub {
		210	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		211	},
		212
		213	=item on_body => $callback->($partial_body, $headers)
		214
		215	When specified, all body data will be passed to this callback instead of
		216	to the completion callback. The completion callback will get the empty
		217	string instead of the body data.
		218
		219	It has to return either true (in which case AnyEvent::HTTP will continue),
		220	or false, in which case AnyEvent::HTTP will cancel the download (and call
		221	the completion callback with an error code of C<598>).
		222
		223	This callback is useful when the data is too large to be held in memory
		224	(so the callback writes it to a file) or when only some information should
		225	be extracted, or when the body should be processed incrementally.
		226
		227	It is usually preferred over doing your own body handling via
		228	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		229	only used to create a connection, C<want_body_handle> is the better
		230	alternative, as it allows you to install your own event handler, reducing
		231	resource usage.
		232
		233	=item want_body_handle => $enable
		234
		235	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		236	changes considerably: after parsing the headers, and instead of
		237	downloading the body (if any), the completion callback will be
		238	called. Instead of the C<$body> argument containing the body data, the
		239	callback will receive the L<AnyEvent::Handle> object associated with the
		240	connection. In error cases, C<undef> will be passed. When there is no body
		241	(e.g. status C<304>), the empty string will be passed.
		242
		243	The handle object might or might not be in TLS mode, might be connected to
		244	a proxy, be a persistent connection etc., and configured in unspecified
		245	ways. The user is responsible for this handle (it will not be used by this
		246	module anymore).
		247
		248	This is useful with some push-type services, where, after the initial
		249	headers, an interactive protocol is used (typical example would be the
		250	push-style twitter API which starts a JSON/XML stream).
		251
		252	If you think you need this, first have a look at C<on_body>, to see if
		253	that doesn't solve your problem in a better way.
177		254
178	=back	255	=back
179		256
180	Example: make a simple HTTP GET request for http://www.nethype.de/	257	Example: make a simple HTTP GET request for http://www.nethype.de/
181		258
…		…
237	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	314	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238		315
239	_slot_schedule $_[0];	316	_slot_schedule $_[0];
240	}	317	}
241		318
		319	our $qr_nl = qr{\015?\012};
		320	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		321
		322	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		323	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		324
242	sub http_request($$@) {	325	sub http_request($$@) {
243	my $cb = pop;	326	my $cb = pop;
244	my ($method, $url, %arg) = @_;	327	my ($method, $url, %arg) = @_;
245		328
246	my %hdr;	329	my %hdr;
		330
		331	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		332	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
247		333
248	$method = uc $method;	334	$method = uc $method;
249		335
250	if (my $hdr = $arg{headers}) {	336	if (my $hdr = $arg{headers}) {
251	while (my ($k, $v) = each %$hdr) {	337	while (my ($k, $v) = each %$hdr) {
…		…
253	}	339	}
254	}	340	}
255		341
256	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	342	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
257		343
258	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	344	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
259	if $recurse < 0;	345	if $recurse < 0;
260		346
261	my $proxy = $arg{proxy} \|\| $PROXY;	347	my $proxy = $arg{proxy} \|\| $PROXY;
262	my $timeout = $arg{timeout} \|\| $TIMEOUT;	348	my $timeout = $arg{timeout} \|\| $TIMEOUT;
263		349
264	$hdr{"user-agent"} \|\|= $USERAGENT;
265
266	my ($scheme, $authority, $upath, $query, $fragment) =	350	my ($uscheme, $uauthority, $upath, $query, $fragment) =
267	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	351	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
268		352
269	$scheme = lc $scheme;	353	$uscheme = lc $uscheme;
270		354
271	my $uport = $scheme eq "http" ? 80	355	my $uport = $uscheme eq "http" ? 80
272	: $scheme eq "https" ? 443	356	: $uscheme eq "https" ? 443
273	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	357	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
274		358
275	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
276
277	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	359	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
278	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	360	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
279		361
280	my $uhost = $1;	362	my $uhost = $1;
281	$uport = $2 if defined $2;	363	$uport = $2 if defined $2;
282		364
		365	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
		366
283	$uhost =~ s/^\[(.*)\]$/$1/;	367	$uhost =~ s/^\[(.*)\]$/$1/;
284	$upath .= "?$query" if length $query;	368	$upath .= "?$query" if length $query;
285		369
286	$upath =~ s%^/?%/%;	370	$upath =~ s%^/?%/%;
287		371
288	# cookie processing	372	# cookie processing
289	if (my $jar = $arg{cookie_jar}) {	373	if (my $jar = $arg{cookie_jar}) {
290	%$jar = () if $jar->{version} < 1;	374	%$jar = () if $jar->{version} != 1;
291		375
292	my @cookie;	376	my @cookie;
293		377
294	while (my ($chost, $v) = each %$jar) {	378	while (my ($chost, $v) = each %$jar) {
295	if ($chost =~ /^\./) {	379	if ($chost =~ /^\./) {
…		…
302		386
303	while (my ($cpath, $v) = each %$v) {	387	while (my ($cpath, $v) = each %$v) {
304	next unless $cpath eq substr $upath, 0, length $cpath;	388	next unless $cpath eq substr $upath, 0, length $cpath;
305		389
306	while (my ($k, $v) = each %$v) {	390	while (my ($k, $v) = each %$v) {
307	next if $scheme ne "https" && exists $v->{secure};	391	next if $uscheme ne "https" && exists $v->{secure};
		392	my $value = $v->{value};
		393	$value =~ s/([\\"])/\\$1/g;
308	push @cookie, "$k=$v->{value}";	394	push @cookie, "$k=\"$value\"";
309	}	395	}
310	}	396	}
311	}	397	}
312		398
313	$hdr{cookie} = join "; ", @cookie	399	$hdr{cookie} = join "; ", @cookie
314	if @cookie;	400	if @cookie;
315	}	401	}
316		402
317	my ($rhost, $rport, $rpath); # request host, port, path	403	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
318		404
319	if ($proxy) {	405	if ($proxy) {
320	($rhost, $rport, $scheme) = @$proxy;	406	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
321	$rpath = $url;	407
		408	$rscheme = "http" unless defined $rscheme;
		409
		410	# don't support https requests over https-proxy transport,
		411	# can't be done with tls as spec'ed, unless you double-encrypt.
		412	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
322	} else {	413	} else {
323	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	414	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
324	$hdr{host} = $uhost;
325	}	415	}
		416
		417	# leave out fragment and query string, just a heuristic
		418	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		419	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};
326		420
327	$hdr{"content-length"} = length $arg{body};	421	$hdr{"content-length"} = length $arg{body};
328		422
329	my %state = (connect_guard => 1);	423	my %state = (connect_guard => 1);
330		424
…		…
333		427
334	return unless $state{connect_guard};	428	return unless $state{connect_guard};
335		429
336	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	430	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
337	$state{fh} = shift	431	$state{fh} = shift
		432	or do {
		433	my $err = "$!";
		434	%state = ();
338	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	435	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
		436	};
339		437
340	delete $state{connect_guard}; # reduce memory usage, save a tree	438	pop; # free memory, save a tree
		439
		440	return unless delete $state{connect_guard};
341		441
342	# get handle	442	# get handle
343	$state{handle} = new AnyEvent::Handle	443	$state{handle} = new AnyEvent::Handle
344	fh => $state{fh},	444	fh => $state{fh},
345	($scheme eq "https" ? (tls => "connect") : ());	445	timeout => $timeout,
		446	peername => $rhost,
		447	tls_ctx => $arg{tls_ctx};
346		448
347	# limit the number of persistent connections	449	# limit the number of persistent connections
		450	# keepalive not yet supported
348	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	451	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
349	++$KA_COUNT{$_[1]};	452	++$KA_COUNT{$_[1]};
350	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	453	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		454	--$KA_COUNT{$_[1]}
		455	};
351	$hdr{connection} = "keep-alive";	456	$hdr{connection} = "keep-alive";
352	delete $hdr{connection}; # keep-alive not yet supported
353	} else {	457	} else {
354	delete $hdr{connection};	458	delete $hdr{connection};
355	}	459	}
356		460
357	# (re-)configure handle	461	# (re-)configure handle
358	$state{handle}->timeout ($timeout);
359	$state{handle}->on_error (sub {	462	$state{handle}->on_error (sub {
360	my $errno = "$!";
361	%state = ();	463	%state = ();
362	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });	464	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
363	});	465	});
364	$state{handle}->on_eof (sub {	466	$state{handle}->on_eof (sub {
365	%state = ();	467	%state = ();
366	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });	468	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
367	});	469	});
368		470
		471	$state{handle}->starttls ("connect") if $rscheme eq "https";
		472
		473	# handle actual, non-tunneled, request
		474	my $handle_actual_request = sub {
		475	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		476
369	# send request	477	# send request
370	$state{handle}->push_write (	478	$state{handle}->push_write (
371	"$method $rpath HTTP/1.0\015\012"	479	"$method $rpath HTTP/1.0\015\012"
372	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	480	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
373	. "\015\012"	481	. "\015\012"
374	. (delete $arg{body})	482	. (delete $arg{body})
375	);
376
377	%hdr = (); # reduce memory usage, save a kitten
378
379	# status line
380	$state{handle}->push_read (line => qr/\015?\012/, sub {
381	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
382	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
383
384	my %hdr = ( # response headers
385	HTTPVersion => "\x00$1",
386	Status => "\x00$2",
387	Reason => "\x00$3",
388	URL => "\x00$url"
389	);	483	);
390		484
		485	%hdr = (); # reduce memory usage, save a kitten
		486
		487	# status line
		488	$state{handle}->push_read (line => $qr_nl, sub {
		489	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		490	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		491
		492	my %hdr = ( # response headers
		493	HTTPVersion => ",$1",
		494	Status => ",$2",
		495	Reason => ",$3",
		496	URL => ",$url"
		497	);
		498
391	# headers, could be optimized a bit	499	# headers, could be optimized a bit
392	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	500	$state{handle}->unshift_read (line => $qr_nlnl, sub {
393	for ("$_[1]\012") {	501	for ("$_[1]") {
394	# we support spaces in field names, as lotus domino	502	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
395	# creates them (actually spaces around seperators	503
396	# are strictly allowed in http, they are a security issue).	504	# things seen, not parsed:
		505	# p3pP="NON CUR OTPi OUR NOR UNI"
		506
397	$hdr{lc $1} .= "\x00$2"	507	$hdr{lc $1} .= ",$2"
398	while /\G	508	while /\G
399	([^:\000-\037]+):	509	([^:\000-\037]*):
400	[\011\040]*	510	[\011\040]*
401	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	511	((?: [^\012]+ \| \012[\011\040] )*)
402	\015?\012	512	\012
403	/gxc;	513	/gxc;
404		514
405	/\G$/	515	/\G$/
406	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	516	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
407	}
408
409	substr $_, 0, 1, ""
410	for values %hdr;
411
412	my $finish = sub {
413	# TODO: use destroy method, when/if available
414	#$state{handle}->destroy;
415	$state{handle}->on_eof (undef);
416	$state{handle}->on_error (undef);
417	%state = ();
418
419	# set-cookie processing
420	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
421	for (split /\x00/, $hdr{"set-cookie"}) {
422	my ($cookie, @arg) = split /;\s*/;
423	my ($name, $value) = split /=/, $cookie, 2;
424	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
425
426	my $cdom;
427	my $cpath = (delete $kv{path}) \|\| "/";
428
429	if (exists $kv{domain}) {
430	$cdom = delete $kv{domain};
431
432	$cdom =~ s/^\.?/./; # make sure it starts with a "."
433
434	next if $cdom =~ /\.$/;
435
436	# this is not rfc-like and not netscape-like. go figure.
437	my $ndots = $cdom =~ y/.//;
438	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
439	} else {
440	$cdom = $uhost;
441	}
442
443	# store it
444	$arg{cookie_jar}{version} = 1;
445	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
446	}
447	}	517	}
448		518
		519	substr $_, 0, 1, ""
		520	for values %hdr;
		521
		522	# redirect handling
449	# microsoft and other shitheads don't give a shit for following standards,	523	# microsoft and other shitheads don't give a shit for following standards,
450	# try to support some common forms of broken Location headers.	524	# try to support some common forms of broken Location headers.
451	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	525	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
452	$_[1]{location} =~ s/^\.\/+//;	526	$hdr{location} =~ s/^\.\/+//;
453		527
454	my $url = "$scheme://$uhost:$uport";	528	my $url = "$rscheme://$uhost:$uport";
455		529
456	unless ($_[1]{location} =~ s/^\///) {	530	unless ($hdr{location} =~ s/^\///) {
457	$url .= $upath;	531	$url .= $upath;
458	$url =~ s/\/[^\/]*$//;	532	$url =~ s/\/[^\/]*$//;
459	}	533	}
460		534
461	$_[1]{location} = "$url/$_[1]{location}";	535	$hdr{location} = "$url/$hdr{location}";
462	}	536	}
463		537
		538	my $redirect;
		539
		540	if ($recurse) {
464	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {	541	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
465	# apparently, mozilla et al. just change POST to GET here	542	# apparently, mozilla et al. just change POST to GET here
466	# more research is needed before we do the same	543	# more research is needed before we do the same
467	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	544	$redirect = 1;
468	} elsif ($_[1]{Status} == 303 && $recurse) {	545	} elsif ($hdr{Status} == 303) {
469	# even http/1.1 is unclear on how to mutate the method	546	# even http/1.1 is unclear on how to mutate the method
470	$method = "GET" unless $method eq "HEAD";	547	$method = "GET" unless $method eq "HEAD";
		548	$redirect = 1;
		549	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		550	$redirect = 1;
		551	}
		552	}
		553
		554	my $finish = sub {
		555	$state{handle}->destroy if $state{handle};
		556	%state = ();
		557
		558	# set-cookie processing
		559	if ($arg{cookie_jar}) {
		560	for ($_[1]{"set-cookie"}) {
		561	# parse NAME=VALUE
		562	my @kv;
		563
		564	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		565	my $name = $1;
		566	my $value = $3;
		567
		568	unless ($value) {
		569	$value = $2;
		570	$value =~ s/\\(.)/$1/gs;
		571	}
		572
		573	push @kv, $name => $value;
		574
		575	last unless /\G\s*;/gc;
		576	}
		577
		578	last unless @kv;
		579
		580	my $name = shift @kv;
		581	my %kv = (value => shift @kv, @kv);
		582
		583	my $cdom;
		584	my $cpath = (delete $kv{path}) \|\| "/";
		585
		586	if (exists $kv{domain}) {
		587	$cdom = delete $kv{domain};
		588
		589	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		590
		591	next if $cdom =~ /\.$/;
		592
		593	# this is not rfc-like and not netscape-like. go figure.
		594	my $ndots = $cdom =~ y/.//;
		595	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		596	} else {
		597	$cdom = $uhost;
		598	}
		599
		600	# store it
		601	$arg{cookie_jar}{version} = 1;
		602	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		603
		604	redo if /\G\s*,/gc;
		605	}
		606	}
		607
		608	if ($redirect && exists $hdr{location}) {
		609	# we ignore any errors, as it is very common to receive
		610	# Content-Length != 0 but no actual body
		611	# we also access %hdr, as $_[1] might be an erro
471	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	612	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
472	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {	613	} else {
473	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	614	$cb->($_[0], $_[1]);
		615	}
		616	};
		617
		618	my $len = $hdr{"content-length"};
		619
		620	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		621	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		622	} elsif (
		623	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		624	or $method eq "HEAD"
		625	or (defined $len && !$len)
		626	) {
		627	# no body
		628	$finish->("", \%hdr);
474	} else {	629	} else {
475	$cb->($_[0], $_[1]);	630	# body handling, four different code paths
		631	# for want_body_handle, on_body (2x), normal (2x)
		632	# we might read too much here, but it does not matter yet (no pers. connections)
		633	if (!$redirect && $arg{want_body_handle}) {
		634	$_[0]->on_eof (undef);
		635	$_[0]->on_error (undef);
		636	$_[0]->on_read (undef);
		637
		638	$finish->(delete $state{handle}, \%hdr);
		639
		640	} elsif ($arg{on_body}) {
		641	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		642	if ($len) {
		643	$_[0]->on_eof (undef);
		644	$_[0]->on_read (sub {
		645	$len -= length $_[0]{rbuf};
		646
		647	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		648	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		649
		650	$len > 0
		651	or $finish->("", \%hdr);
		652	});
		653	} else {
		654	$_[0]->on_eof (sub {
		655	$finish->("", \%hdr);
		656	});
		657	$_[0]->on_read (sub {
		658	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		659	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		660	});
		661	}
		662	} else {
		663	$_[0]->on_eof (undef);
		664
		665	if ($len) {
		666	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		667	$_[0]->on_read (sub {
		668	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		669	if $len <= length $_[0]{rbuf};
		670	});
		671	} else {
		672	$_[0]->on_error (sub {
		673	$! == Errno::EPIPE \|\| !$!
		674	? $finish->(delete $_[0]{rbuf}, \%hdr)
		675	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		676	});
		677	$_[0]->on_read (sub { });
		678	}
		679	}
476	}	680	}
477	};	681	});
		682	});
		683	};
478		684
479	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	685	# now handle proxy-CONNECT method
480	$finish->(undef, \%hdr);	686	if ($proxy && $uscheme eq "https") {
		687	# oh dear, we have to wrap it into a connect request
		688
		689	# maybe re-use $uauthority with patched port?
		690	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		691	$state{handle}->push_read (line => $qr_nlnl, sub {
		692	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		693	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		694
		695	if ($2 == 200) {
		696	$rpath = $upath;
		697	&$handle_actual_request;
481	} else {	698	} else {
482	if (exists $hdr{"content-length"}) {	699	%state = ();
483	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	700	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
484	# could cache persistent connection now
485	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
486	# but we don't, due to misdesigns, this is annoyingly complex
487	};
488
489	$finish->($_[1], \%hdr);
490	});
491	} else {
492	# too bad, need to read until we get an error or EOF,
493	# no way to detect winged data.
494	$_[0]->on_error (sub {
495	$finish->($_[0]{rbuf}, \%hdr);
496	});
497	$_[0]->on_eof (undef);
498	$_[0]->on_read (sub { });
499	}
500	}	701	}
501	});	702	});
		703	} else {
		704	&$handle_actual_request;
502	});	705	}
503	}, sub {	706
504	$timeout	707	}, $arg{on_prepare} \|\| sub { $timeout };
505	};
506	};	708	};
507		709
508	defined wantarray && AnyEvent::Util::guard { %state = () }	710	defined wantarray && AnyEvent::Util::guard { %state = () }
509	}	711	}
510		712
…		…
540	The default value for the C<recurse> request parameter (default: C<10>).	742	The default value for the C<recurse> request parameter (default: C<10>).
541		743
542	=item $AnyEvent::HTTP::USERAGENT	744	=item $AnyEvent::HTTP::USERAGENT
543		745
544	The default value for the C<User-Agent> header (the default is	746	The default value for the C<User-Agent> header (the default is
545	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	747	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
546		748
547	=item $AnyEvent::HTTP::MAX_PERSISTENT	749	=item $AnyEvent::HTTP::MAX_PER_HOST
548		750
549	The maximum number of persistent connections to keep open (default: 8).	751	The maximum number of concurrent connections to the same host (identified
		752	by the hostname). If the limit is exceeded, then the additional requests
		753	are queued until previous connections are closed.
550		754
551	Not implemented currently.	755	The default value for this is C<4>, and it is highly advisable to not
552		756	increase it.
553	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
554
555	The maximum time to cache a persistent connection, in seconds (default: 2).
556
557	Not implemented currently.
558		757
559	=item $AnyEvent::HTTP::ACTIVE	758	=item $AnyEvent::HTTP::ACTIVE
560		759
561	The number of active connections. This is not the number of currently	760	The number of active connections. This is not the number of currently
562	running requests, but the number of currently open and non-idle TCP	761	running requests, but the number of currently open and non-idle TCP
…		…
580	=head1 AUTHOR	779	=head1 AUTHOR
581		780
582	Marc Lehmann <schmorp@schmorp.de>	781	Marc Lehmann <schmorp@schmorp.de>
583	http://home.schmorp.de/	782	http://home.schmorp.de/
584		783
		784	With many thanks to Дмитрий Шалашов, who provided countless
		785	testcases and bugreports.
		786
585	=cut	787	=cut
586		788
587	1	789	1
588		790

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.30 by root, Thu Oct 23 02:46:20 2008 UTC vs. Revision 1.50 by root, Tue Aug 11 13:20:42 2009 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.30 by root, Thu Oct 23 02:46:20 2008 UTC vs.
Revision 1.50 by root, Tue Aug 11 13:20:42 2009 UTC