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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.29 by root, Wed Oct 22 23:28:11 2008 UTC vs.
Revision 1.54 by root, Wed Jun 16 18:09:52 2010 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 5.0 ();
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 = '1.44';
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 => $seconds
145		148
146	The time-out to use for various stages - each connect attempt will reset	149	The time-out to use for various stages - each connect attempt will reset
147	the timeout, as will read or write activity. Default timeout is 5 minutes.	150	the timeout, as will read or write activity, i.e. this is not an overall
		151	timeout.
		152
		153	Default timeout is 5 minutes.
148		154
149	=item proxy => [$host, $port[, $scheme]] or undef	155	=item proxy => [$host, $port[, $scheme]] or undef
150		156
151	Use the given http proxy for all requests. If not specified, then the	157	Use the given http proxy for all requests. If not specified, then the
152	default proxy (as specified by C<$ENV{http_proxy}>) is used.	158	default proxy (as specified by C<$ENV{http_proxy}>) is used.
153		159
154	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	160	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
155	HTTPS.	161	HTTPS.
156		162
157	=item body => $string	163	=item body => $string
158		164
159	The request body, usually empty. Will be-sent as-is (future versions of	165	The request body, usually empty. Will be-sent as-is (future versions of
…		…
165	based on the original netscape specification.	171	based on the original netscape specification.
166		172
167	The C<$hash_ref> must be an (initially empty) hash reference which will	173	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	174	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	175	persistent storage with something like JSON or Storable, but this is not
170	recommended, as expire times are currently being ignored.	176	recommended, as expiry times are currently being ignored.
171		177
172	Note that this cookie implementation is not of very high quality, nor	178	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	179	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	180	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	181	cookie-using sites working. Cookies are a privacy disaster, do not use
176	them unless required to.	182	them unless required to.
		183
		184	=item tls_ctx => $scheme \| $tls_ctx
		185
		186	Specifies the AnyEvent::TLS context to be used for https connections. This
		187	parameter follows the same rules as the C<tls_ctx> parameter to
		188	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		189	C<high> can be specified, which give you a predefined low-security (no
		190	verification, highest compatibility) and high-security (CA and common-name
		191	verification) TLS context.
		192
		193	The default for this option is C<low>, which could be interpreted as "give
		194	me the page, no matter what".
		195
		196	=item on_prepare => $callback->($fh)
		197
		198	In rare cases you need to "tune" the socket before it is used to
		199	connect (for exmaple, to bind it on a given IP address). This parameter
		200	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		201	and behaves exactly the same way (e.g. it has to provide a
		202	timeout). See the description for the C<$prepare_cb> argument of
		203	C<AnyEvent::Socket::tcp_connect> for details.
		204
		205	=item on_header => $callback->($headers)
		206
		207	When specified, this callback will be called with the header hash as soon
		208	as headers have been successfully received from the remote server (not on
		209	locally-generated errors).
		210
		211	It has to return either true (in which case AnyEvent::HTTP will continue),
		212	or false, in which case AnyEvent::HTTP will cancel the download (and call
		213	the finish callback with an error code of C<598>).
		214
		215	This callback is useful, among other things, to quickly reject unwanted
		216	content, which, if it is supposed to be rare, can be faster than first
		217	doing a C<HEAD> request.
		218
		219	Example: cancel the request unless the content-type is "text/html".
		220
		221	on_header => sub {
		222	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		223	},
		224
		225	=item on_body => $callback->($partial_body, $headers)
		226
		227	When specified, all body data will be passed to this callback instead of
		228	to the completion callback. The completion callback will get the empty
		229	string instead of the body data.
		230
		231	It has to return either true (in which case AnyEvent::HTTP will continue),
		232	or false, in which case AnyEvent::HTTP will cancel the download (and call
		233	the completion callback with an error code of C<598>).
		234
		235	This callback is useful when the data is too large to be held in memory
		236	(so the callback writes it to a file) or when only some information should
		237	be extracted, or when the body should be processed incrementally.
		238
		239	It is usually preferred over doing your own body handling via
		240	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		241	only used to create a connection, C<want_body_handle> is the better
		242	alternative, as it allows you to install your own event handler, reducing
		243	resource usage.
		244
		245	=item want_body_handle => $enable
		246
		247	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		248	changes considerably: after parsing the headers, and instead of
		249	downloading the body (if any), the completion callback will be
		250	called. Instead of the C<$body> argument containing the body data, the
		251	callback will receive the L<AnyEvent::Handle> object associated with the
		252	connection. In error cases, C<undef> will be passed. When there is no body
		253	(e.g. status C<304>), the empty string will be passed.
		254
		255	The handle object might or might not be in TLS mode, might be connected to
		256	a proxy, be a persistent connection etc., and configured in unspecified
		257	ways. The user is responsible for this handle (it will not be used by this
		258	module anymore).
		259
		260	This is useful with some push-type services, where, after the initial
		261	headers, an interactive protocol is used (typical example would be the
		262	push-style twitter API which starts a JSON/XML stream).
		263
		264	If you think you need this, first have a look at C<on_body>, to see if
		265	that doesn't solve your problem in a better way.
177		266
178	=back	267	=back
179		268
180	Example: make a simple HTTP GET request for http://www.nethype.de/	269	Example: make a simple HTTP GET request for http://www.nethype.de/
181		270
…		…
237	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	326	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238		327
239	_slot_schedule $_[0];	328	_slot_schedule $_[0];
240	}	329	}
241		330
		331	our $qr_nl = qr{\015?\012};
		332	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		333
		334	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		335	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		336
242	sub http_request($$@) {	337	sub http_request($$@) {
243	my $cb = pop;	338	my $cb = pop;
244	my ($method, $url, %arg) = @_;	339	my ($method, $url, %arg) = @_;
245		340
246	my %hdr;	341	my %hdr;
		342
		343	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		344	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
247		345
248	$method = uc $method;	346	$method = uc $method;
249		347
250	if (my $hdr = $arg{headers}) {	348	if (my $hdr = $arg{headers}) {
251	while (my ($k, $v) = each %$hdr) {	349	while (my ($k, $v) = each %$hdr) {
…		…
253	}	351	}
254	}	352	}
255		353
256	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	354	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
257		355
258	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	356	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
259	if $recurse < 0;	357	if $recurse < 0;
260		358
261	my $proxy = $arg{proxy} \|\| $PROXY;	359	my $proxy = $arg{proxy} \|\| $PROXY;
262	my $timeout = $arg{timeout} \|\| $TIMEOUT;	360	my $timeout = $arg{timeout} \|\| $TIMEOUT;
263		361
264	$hdr{"user-agent"} \|\|= $USERAGENT;
265
266	my ($scheme, $authority, $upath, $query, $fragment) =	362	my ($uscheme, $uauthority, $upath, $query, $fragment) =
267	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	363	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
268		364
269	$scheme = lc $scheme;	365	$uscheme = lc $uscheme;
270		366
271	my $uport = $scheme eq "http" ? 80	367	my $uport = $uscheme eq "http" ? 80
272	: $scheme eq "https" ? 443	368	: $uscheme eq "https" ? 443
273	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	369	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
274		370
275	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
276
277	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	371	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
278	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	372	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
279		373
280	my $uhost = $1;	374	my $uhost = $1;
281	$uport = $2 if defined $2;	375	$uport = $2 if defined $2;
282		376
		377	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		378	unless exists $hdr{host};
		379
283	$uhost =~ s/^\[(.*)\]$/$1/;	380	$uhost =~ s/^\[(.*)\]$/$1/;
284	$upath .= "?$query" if length $query;	381	$upath .= "?$query" if length $query;
285		382
286	$upath =~ s%^/?%/%;	383	$upath =~ s%^/?%/%;
287		384
288	# cookie processing	385	# cookie processing
289	if (my $jar = $arg{cookie_jar}) {	386	if (my $jar = $arg{cookie_jar}) {
290	%$jar = () if $jar->{version} < 1;	387	%$jar = () if $jar->{version} != 1;
291		388
292	my @cookie;	389	my @cookie;
293		390
294	while (my ($chost, $v) = each %$jar) {	391	while (my ($chost, $v) = each %$jar) {
		392	if ($chost =~ /^\./) {
295	next unless $chost eq substr $uhost, -length $chost;	393	next unless $chost eq substr $uhost, -length $chost;
296	next unless $chost =~ /^\./;	394	} elsif ($chost =~ /\./) {
		395	next unless $chost eq $uhost;
		396	} else {
		397	next;
		398	}
297		399
298	while (my ($cpath, $v) = each %$v) {	400	while (my ($cpath, $v) = each %$v) {
299	next unless $cpath eq substr $upath, 0, length $cpath;	401	next unless $cpath eq substr $upath, 0, length $cpath;
300		402
301	while (my ($k, $v) = each %$v) {	403	while (my ($k, $v) = each %$v) {
302	next if $scheme ne "https" && exists $v->{secure};	404	next if $uscheme ne "https" && exists $v->{secure};
		405	my $value = $v->{value};
		406	$value =~ s/([\\"])/\\$1/g;
303	push @cookie, "$k=$v->{value}";	407	push @cookie, "$k=\"$value\"";
304	}	408	}
305	}	409	}
306	}	410	}
307		411
308	$hdr{cookie} = join "; ", @cookie	412	$hdr{cookie} = join "; ", @cookie
309	if @cookie;	413	if @cookie;
310	}	414	}
311		415
312	my ($rhost, $rport, $rpath); # request host, port, path	416	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
313		417
314	if ($proxy) {	418	if ($proxy) {
315	($rhost, $rport, $scheme) = @$proxy;	419	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
316	$rpath = $url;	420
		421	$rscheme = "http" unless defined $rscheme;
		422
		423	# don't support https requests over https-proxy transport,
		424	# can't be done with tls as spec'ed, unless you double-encrypt.
		425	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
317	} else {	426	} else {
318	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	427	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
319	$hdr{host} = $uhost;
320	}	428	}
321		429
		430	# leave out fragment and query string, just a heuristic
		431	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		432	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};
		433
322	$hdr{"content-length"} = length $arg{body};	434	$hdr{"content-length"} = length $arg{body}
		435	if length $arg{body} \|\| $method ne "GET";
323		436
324	my %state = (connect_guard => 1);	437	my %state = (connect_guard => 1);
325		438
326	_get_slot $uhost, sub {	439	_get_slot $uhost, sub {
327	$state{slot_guard} = shift;	440	$state{slot_guard} = shift;
328		441
329	return unless $state{connect_guard};	442	return unless $state{connect_guard};
330		443
331	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	444	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
332	$state{fh} = shift	445	$state{fh} = shift
		446	or do {
		447	my $err = "$!";
		448	%state = ();
333	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	449	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
		450	};
334		451
335	delete $state{connect_guard}; # reduce memory usage, save a tree	452	pop; # free memory, save a tree
		453
		454	return unless delete $state{connect_guard};
336		455
337	# get handle	456	# get handle
338	$state{handle} = new AnyEvent::Handle	457	$state{handle} = new AnyEvent::Handle
339	fh => $state{fh},	458	fh => $state{fh},
340	($scheme eq "https" ? (tls => "connect") : ());	459	timeout => $timeout,
		460	peername => $rhost,
		461	tls_ctx => $arg{tls_ctx};
341		462
342	# limit the number of persistent connections	463	# limit the number of persistent connections
		464	# keepalive not yet supported
343	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	465	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
344	++$KA_COUNT{$_[1]};	466	++$KA_COUNT{$_[1]};
345	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	467	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		468	--$KA_COUNT{$_[1]}
		469	};
346	$hdr{connection} = "keep-alive";	470	$hdr{connection} = "keep-alive";
347	delete $hdr{connection}; # keep-alive not yet supported
348	} else {	471	} else {
349	delete $hdr{connection};	472	delete $hdr{connection};
350	}	473	}
351		474
352	# (re-)configure handle	475	# (re-)configure handle
353	$state{handle}->timeout ($timeout);
354	$state{handle}->on_error (sub {	476	$state{handle}->on_error (sub {
355	my $errno = "$!";
356	%state = ();	477	%state = ();
357	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });	478	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
358	});	479	});
359	$state{handle}->on_eof (sub {	480	$state{handle}->on_eof (sub {
360	%state = ();	481	%state = ();
361	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });	482	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
362	});	483	});
363		484
		485	$state{handle}->starttls ("connect") if $rscheme eq "https";
		486
		487	# handle actual, non-tunneled, request
		488	my $handle_actual_request = sub {
		489	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		490
364	# send request	491	# send request
365	$state{handle}->push_write (	492	$state{handle}->push_write (
366	"$method $rpath HTTP/1.0\015\012"	493	"$method $rpath HTTP/1.0\015\012"
367	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	494	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
368	. "\015\012"	495	. "\015\012"
369	. (delete $arg{body})	496	. (delete $arg{body})
370	);
371
372	%hdr = (); # reduce memory usage, save a kitten
373
374	# status line
375	$state{handle}->push_read (line => qr/\015?\012/, sub {
376	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
377	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
378
379	my %hdr = ( # response headers
380	HTTPVersion => "\x00$1",
381	Status => "\x00$2",
382	Reason => "\x00$3",
383	URL => "\x00$url"
384	);	497	);
385		498
		499	# return if error occured during push_write()
		500	return unless %state;
		501
		502	%hdr = (); # reduce memory usage, save a kitten
		503
		504	# status line
		505	$state{handle}->push_read (line => $qr_nl, sub {
		506	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		507	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		508
		509	my %hdr = ( # response headers
		510	HTTPVersion => ",$1",
		511	Status => ",$2",
		512	Reason => ",$3",
		513	URL => ",$url"
		514	);
		515
386	# headers, could be optimized a bit	516	# headers, could be optimized a bit
387	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	517	$state{handle}->unshift_read (line => $qr_nlnl, sub {
388	for ("$_[1]\012") {	518	for ("$_[1]") {
389	# we support spaces in field names, as lotus domino	519	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
390	# creates them.	520
		521	# things seen, not parsed:
		522	# p3pP="NON CUR OTPi OUR NOR UNI"
		523
391	$hdr{lc $1} .= "\x00$2"	524	$hdr{lc $1} .= ",$2"
392	while /\G	525	while /\G
393	([^:\000-\037]+):	526	([^:\000-\037]*):
394	[\011\040]*	527	[\011\040]*
395	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	528	((?: [^\012]+ \| \012[\011\040] )*)
396	\015?\012	529	\012
397	/gxc;	530	/gxc;
398		531
399	/\G$/	532	/\G$/
400	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	533	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
401	}
402
403	substr $_, 0, 1, ""
404	for values %hdr;
405
406	my $finish = sub {
407	%state = ();
408
409	# set-cookie processing
410	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
411	for (split /\x00/, $hdr{"set-cookie"}) {
412	my ($cookie, @arg) = split /;\s*/;
413	my ($name, $value) = split /=/, $cookie, 2;
414	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
415
416	my $cdom = (delete $kv{domain}) \|\| $uhost;
417	my $cpath = (delete $kv{path}) \|\| "/";
418
419	$cdom =~ s/^\.?/./; # make sure it starts with a "."
420
421	next if $cdom =~ /\.$/;
422
423	# this is not rfc-like and not netscape-like. go figure.
424	my $ndots = $cdom =~ y/.//;
425	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
426
427	# store it
428	$arg{cookie_jar}{version} = 1;
429	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
430	}
431	}	534	}
432		535
		536	substr $_, 0, 1, ""
		537	for values %hdr;
		538
		539	# redirect handling
433	# microsoft and other shitheads don't give a shit for following standards,	540	# microsoft and other shitheads don't give a shit for following standards,
434	# try to support some common forms of broken Location headers.	541	# try to support some common forms of broken Location headers.
435	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	542	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
436	$_[1]{location} =~ s/^\.\/+//;	543	$hdr{location} =~ s/^\.\/+//;
437		544
438	my $url = "$scheme://$uhost:$uport";	545	my $url = "$rscheme://$uhost:$uport";
439		546
440	unless ($_[1]{location} =~ s/^\///) {	547	unless ($hdr{location} =~ s/^\///) {
441	$url .= $upath;	548	$url .= $upath;
442	$url =~ s/\/[^\/]*$//;	549	$url =~ s/\/[^\/]*$//;
443	}	550	}
444		551
445	$_[1]{location} = "$url/$_[1]{location}";	552	$hdr{location} = "$url/$hdr{location}";
446	}	553	}
447		554
		555	my $redirect;
		556
		557	if ($recurse) {
448	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {	558	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
449	# apparently, mozilla et al. just change POST to GET here	559	# apparently, mozilla et al. just change POST to GET here
450	# more research is needed before we do the same	560	# more research is needed before we do the same
451	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	561	$redirect = 1;
452	} elsif ($_[1]{Status} == 303 && $recurse) {	562	} elsif ($hdr{Status} == 303) {
453	# even http/1.1 is unlear on how to mutate the method	563	# even http/1.1 is unclear on how to mutate the method
454	$method = "GET" unless $method eq "HEAD";	564	$method = "GET" unless $method eq "HEAD";
		565	$redirect = 1;
		566	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		567	$redirect = 1;
		568	}
		569	}
		570
		571	my $finish = sub {
		572	$state{handle}->destroy if $state{handle};
		573	%state = ();
		574
		575	# set-cookie processing
		576	if ($arg{cookie_jar}) {
		577	for ($_[1]{"set-cookie"}) {
		578	# parse NAME=VALUE
		579	my @kv;
		580
		581	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		582	my $name = $1;
		583	my $value = $3;
		584
		585	unless ($value) {
		586	$value = $2;
		587	$value =~ s/\\(.)/$1/gs;
		588	}
		589
		590	push @kv, $name => $value;
		591
		592	last unless /\G\s*;/gc;
		593	}
		594
		595	last unless @kv;
		596
		597	my $name = shift @kv;
		598	my %kv = (value => shift @kv, @kv);
		599
		600	my $cdom;
		601	my $cpath = (delete $kv{path}) \|\| "/";
		602
		603	if (exists $kv{domain}) {
		604	$cdom = delete $kv{domain};
		605
		606	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		607
		608	next if $cdom =~ /\.$/;
		609
		610	# this is not rfc-like and not netscape-like. go figure.
		611	my $ndots = $cdom =~ y/.//;
		612	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		613	} else {
		614	$cdom = $uhost;
		615	}
		616
		617	# store it
		618	$arg{cookie_jar}{version} = 1;
		619	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		620
		621	redo if /\G\s*,/gc;
		622	}
		623	}
		624
		625	if ($redirect && exists $hdr{location}) {
		626	# we ignore any errors, as it is very common to receive
		627	# Content-Length != 0 but no actual body
		628	# we also access %hdr, as $_[1] might be an erro
455	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	629	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
456	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {	630	} else {
457	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	631	$cb->($_[0], $_[1]);
		632	}
		633	};
		634
		635	my $len = $hdr{"content-length"};
		636
		637	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		638	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		639	} elsif (
		640	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		641	or $method eq "HEAD"
		642	or (defined $len && !$len)
		643	) {
		644	# no body
		645	$finish->("", \%hdr);
458	} else {	646	} else {
459	$cb->($_[0], $_[1]);	647	# body handling, four different code paths
		648	# for want_body_handle, on_body (2x), normal (2x)
		649	# we might read too much here, but it does not matter yet (no pers. connections)
		650	if (!$redirect && $arg{want_body_handle}) {
		651	$_[0]->on_eof (undef);
		652	$_[0]->on_error (undef);
		653	$_[0]->on_read (undef);
		654
		655	$finish->(delete $state{handle}, \%hdr);
		656
		657	} elsif ($arg{on_body}) {
		658	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		659	if ($len) {
		660	$_[0]->on_eof (undef);
		661	$_[0]->on_read (sub {
		662	$len -= length $_[0]{rbuf};
		663
		664	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		665	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		666
		667	$len > 0
		668	or $finish->("", \%hdr);
		669	});
		670	} else {
		671	$_[0]->on_eof (sub {
		672	$finish->("", \%hdr);
		673	});
		674	$_[0]->on_read (sub {
		675	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		676	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		677	});
		678	}
		679	} else {
		680	$_[0]->on_eof (undef);
		681
		682	if ($len) {
		683	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		684	$_[0]->on_read (sub {
		685	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		686	if $len <= length $_[0]{rbuf};
		687	});
		688	} else {
		689	$_[0]->on_error (sub {
		690	$! == Errno::EPIPE \|\| !$!
		691	? $finish->(delete $_[0]{rbuf}, \%hdr)
		692	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		693	});
		694	$_[0]->on_read (sub { });
		695	}
		696	}
460	}	697	}
461	};	698	});
		699	});
		700	};
462		701
463	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	702	# now handle proxy-CONNECT method
464	$finish->(undef, \%hdr);	703	if ($proxy && $uscheme eq "https") {
		704	# oh dear, we have to wrap it into a connect request
		705
		706	# maybe re-use $uauthority with patched port?
		707	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		708	$state{handle}->push_read (line => $qr_nlnl, sub {
		709	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		710	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		711
		712	if ($2 == 200) {
		713	$rpath = $upath;
		714	&$handle_actual_request;
465	} else {	715	} else {
466	if (exists $hdr{"content-length"}) {	716	%state = ();
467	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	717	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
468	# could cache persistent connection now
469	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
470	# but we don't, due to misdesigns, this is annoyingly complex
471	};
472
473	$finish->($_[1], \%hdr);
474	});
475	} else {
476	# too bad, need to read until we get an error or EOF,
477	# no way to detect winged data.
478	$_[0]->on_error (sub {
479	$finish->($_[0]{rbuf}, \%hdr);
480	});
481	$_[0]->on_eof (undef);
482	$_[0]->on_read (sub { });
483	}
484	}	718	}
485	});	719	});
		720	} else {
		721	&$handle_actual_request;
486	});	722	}
487	}, sub {	723
488	$timeout	724	}, $arg{on_prepare} \|\| sub { $timeout };
489	};
490	};	725	};
491		726
492	defined wantarray && AnyEvent::Util::guard { %state = () }	727	defined wantarray && AnyEvent::Util::guard { %state = () }
493	}	728	}
494		729
…		…
515	=over 4	750	=over 4
516		751
517	=item AnyEvent::HTTP::set_proxy "proxy-url"	752	=item AnyEvent::HTTP::set_proxy "proxy-url"
518		753
519	Sets the default proxy server to use. The proxy-url must begin with a	754	Sets the default proxy server to use. The proxy-url must begin with a
520	string of the form C<http://host:port> (optionally C<https:...>).	755	string of the form C<http://host:port> (optionally C<https:...>), croaks
		756	otherwise.
		757
		758	To clear an already-set proxy, use C<undef>.
521		759
522	=item $AnyEvent::HTTP::MAX_RECURSE	760	=item $AnyEvent::HTTP::MAX_RECURSE
523		761
524	The default value for the C<recurse> request parameter (default: C<10>).	762	The default value for the C<recurse> request parameter (default: C<10>).
525		763
526	=item $AnyEvent::HTTP::USERAGENT	764	=item $AnyEvent::HTTP::USERAGENT
527		765
528	The default value for the C<User-Agent> header (the default is	766	The default value for the C<User-Agent> header (the default is
529	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	767	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
530		768
531	=item $AnyEvent::HTTP::MAX_PERSISTENT	769	=item $AnyEvent::HTTP::MAX_PER_HOST
532		770
533	The maximum number of persistent connections to keep open (default: 8).	771	The maximum number of concurrent connections to the same host (identified
		772	by the hostname). If the limit is exceeded, then the additional requests
		773	are queued until previous connections are closed.
534		774
535	Not implemented currently.	775	The default value for this is C<4>, and it is highly advisable to not
536		776	increase it.
537	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
538
539	The maximum time to cache a persistent connection, in seconds (default: 2).
540
541	Not implemented currently.
542		777
543	=item $AnyEvent::HTTP::ACTIVE	778	=item $AnyEvent::HTTP::ACTIVE
544		779
545	The number of active connections. This is not the number of currently	780	The number of active connections. This is not the number of currently
546	running requests, but the number of currently open and non-idle TCP	781	running requests, but the number of currently open and non-idle TCP
…		…
549	=back	784	=back
550		785
551	=cut	786	=cut
552		787
553	sub set_proxy($) {	788	sub set_proxy($) {
		789	if (length $_[0]) {
554	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	790	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		791	or Carp::croak "$_[0]: invalid proxy URL";
		792	$PROXY = [$2, $3 \|\| 3128, $1]
		793	} else {
		794	undef $PROXY;
		795	}
555	}	796	}
556		797
557	# initialise proxy from environment	798	# initialise proxy from environment
		799	eval {
558	set_proxy $ENV{http_proxy};	800	set_proxy $ENV{http_proxy};
		801	};
559		802
560	=head1 SEE ALSO	803	=head1 SEE ALSO
561		804
562	L<AnyEvent>.	805	L<AnyEvent>.
563		806
564	=head1 AUTHOR	807	=head1 AUTHOR
565		808
566	Marc Lehmann <schmorp@schmorp.de>	809	Marc Lehmann <schmorp@schmorp.de>
567	http://home.schmorp.de/	810	http://home.schmorp.de/
568		811
		812	With many thanks to Дмитрий Шалашов, who provided countless
		813	testcases and bugreports.
		814
569	=cut	815	=cut
570		816
571	1	817	1
572		818

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.29 by root, Wed Oct 22 23:28:11 2008 UTC vs. Revision 1.54 by root, Wed Jun 16 18:09:52 2010 UTC

Diff Legend

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.29 by root, Wed Oct 22 23:28:11 2008 UTC vs.
Revision 1.54 by root, Wed Jun 16 18:09:52 2010 UTC