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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.4 by root, Wed Jun 4 11:59:22 2008 UTC vs.
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC

…		…
3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client	3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client
4		4
5	=head1 SYNOPSIS	5	=head1 SYNOPSIS
6		6
7	use AnyEvent::HTTP;	7	use AnyEvent::HTTP;
		8
		9	http_get "http://www.nethype.de/", sub { print $_[1] };
		10
		11	# ... do something else here
8		12
9	=head1 DESCRIPTION	13	=head1 DESCRIPTION
10		14
11	This module is an L<AnyEvent> user, you need to make sure that you use and	15	This module is an L<AnyEvent> user, you need to make sure that you use and
12	run a supported event loop.	16	run a supported event loop.
13		17
		18	This module implements a simple, stateless and non-blocking HTTP
		19	client. It supports GET, POST and other request methods, cookies and more,
		20	all on a very low level. It can follow redirects supports proxies and
		21	automatically limits the number of connections to the values specified in
		22	the RFC.
		23
		24	It should generally be a "good client" that is enough for most HTTP
		25	tasks. Simple tasks should be simple, but complex tasks should still be
		26	possible as the user retains control over request and response headers.
		27
		28	The caller is responsible for authentication management, cookies (if
		29	the simplistic implementation in this module doesn't suffice), referer
		30	and other high-level protocol details for which this module offers only
		31	limited support.
		32
14	=head2 METHODS	33	=head2 METHODS
15		34
16	=over 4	35	=over 4
17		36
18	=cut	37	=cut
…		…
22	use strict;	41	use strict;
23	no warnings;	42	no warnings;
24		43
25	use Carp;	44	use Carp;
26		45
27	use AnyEvent ();	46	use AnyEvent 4.452 ();
28	use AnyEvent::Util ();	47	use AnyEvent::Util ();
29	use AnyEvent::Socket ();	48	use AnyEvent::Socket ();
30	use AnyEvent::Handle ();	49	use AnyEvent::Handle ();
31		50
32	use base Exporter::;	51	use base Exporter::;
33		52
34	our $VERSION = '1.0';	53	our $VERSION = '1.12';
35		54
36	our @EXPORT = qw(http_get http_request);	55	our @EXPORT = qw(http_get http_post http_head http_request);
37		56
38	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)";
39	our $MAX_RECURSE = 10;	58	our $MAX_RECURSE = 10;
40	our $MAX_PERSISTENT = 8;	59	our $MAX_PERSISTENT = 8;
41	our $PERSISTENT_TIMEOUT = 2;	60	our $PERSISTENT_TIMEOUT = 2;
42	our $TIMEOUT = 300;	61	our $TIMEOUT = 300;
43		62
44	# changing these is evil	63	# changing these is evil
45	our $MAX_PERSISTENT_PER_HOST = 2;	64	our $MAX_PERSISTENT_PER_HOST = 2;
46	our $MAX_PER_HOST = 4; # not respected yet :(	65	our $MAX_PER_HOST = 4;
47		66
48	our $PROXY;	67	our $PROXY;
		68	our $ACTIVE = 0;
49		69
50	my %KA_COUNT; # number of open keep-alive connections per host	70	my %KA_COUNT; # number of open keep-alive connections per host
		71	my %CO_SLOT; # number of open connections, and wait queue, per host
51		72
52	=item http_get $url, key => value..., $cb->($data, $headers)	73	=item http_get $url, key => value..., $cb->($data, $headers)
53		74
54	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
55	additional parameters.	76	additional parameters and the return value.
56		77
		78	=item http_head $url, key => value..., $cb->($data, $headers)
		79
		80	Executes an HTTP-HEAD request. See the http_request function for details
		81	on additional parameters and the return value.
		82
57	=item http_get $url, $body, key => value..., $cb->($data, $headers)	83	=item http_post $url, $body, key => value..., $cb->($data, $headers)
58		84
59	Executes an HTTP-POST request with a requets body of C<$bod>. See the	85	Executes an HTTP-POST request with a request body of C<$body>. See the
60	http_request function for details on additional parameters.	86	http_request function for details on additional parameters and the return
		87	value.
61		88
62	=item http_request $method => $url, key => value..., $cb->($data, $headers)	89	=item http_request $method => $url, key => value..., $cb->($data, $headers)
63		90
64	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	91	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
65	must be an absolute http or https URL.	92	must be an absolute http or https URL.
		93
		94	When called in void context, nothing is returned. In other contexts,
		95	C<http_request> returns a "cancellation guard" - you have to keep the
		96	object at least alive until the callback get called. If the object gets
		97	destroyed before the callbakc is called, the request will be cancelled.
66		98
67	The callback will be called with the response data as first argument	99	The callback will be called with the response data as first argument
68	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if it wasn't available due to errors), and a hash-ref with
69	response headers as second argument.	101	response headers as second argument.
70		102
71	All the headers in that has are lowercased. In addition to the response	103	All the headers in that hash are lowercased. In addition to the response
72	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
73	C<Reason> contain the three parts of the HTTP Status-Line of the same	105	contain the three parts of the HTTP Status-Line of the same name. The
74	name.	106	pseudo-header C<URL> contains the original URL (which can differ from the
		107	requested URL when following redirects).
		108
		109	If the server sends a header multiple times, then their contents will be
		110	joined together with a comma (C<,>), as per the HTTP spec.
75		111
76	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
77	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>
78	and the C<Reason> pseudo-header will contain an error message.	114	and the C<Reason> pseudo-header will contain an error message.
79		115
		116	A typical callback might look like this:
		117
		118	sub {
		119	my ($body, $hdr) = @_;
		120
		121	if ($hdr->{Status} =~ /^2/) {
		122	... everything should be ok
		123	} else {
		124	print "error, $hdr->{Status} $hdr->{Reason}\n";
		125	}
		126	}
		127
80	Additional parameters are key-value pairs, and are fully optional. They	128	Additional parameters are key-value pairs, and are fully optional. They
81	include:	129	include:
82		130
83	=over 4	131	=over 4
84		132
…		…
87	Whether to recurse requests or not, e.g. on redirects, authentication	135	Whether to recurse requests or not, e.g. on redirects, authentication
88	retries and so on, and how often to do so.	136	retries and so on, and how often to do so.
89		137
90	=item headers => hashref	138	=item headers => hashref
91		139
92	The request headers to use.	140	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	and will provide defaults for C<User-Agent:> and C<Referer:>.
93		143
94	=item timeout => $seconds	144	=item timeout => $seconds
95		145
96	The time-out to use for various stages - each connect attempt will reset	146	The time-out to use for various stages - each connect attempt will reset
97	the timeout, as will read or write activity. Default timeout is 5 minutes.	147	the timeout, as will read or write activity. Default timeout is 5 minutes.
…		…
107	=item body => $string	157	=item body => $string
108		158
109	The request body, usually empty. Will be-sent as-is (future versions of	159	The request body, usually empty. Will be-sent as-is (future versions of
110	this module might offer more options).	160	this module might offer more options).
111		161
		162	=item cookie_jar => $hash_ref
		163
		164	Passing this parameter enables (simplified) cookie-processing, loosely
		165	based on the original netscape specification.
		166
		167	The C<$hash_ref> must be an (initially empty) hash reference which will
		168	get updated automatically. It is possible to save the cookie_jar to
		169	persistent storage with something like JSON or Storable, but this is not
		170	recommended, as expiry times are currently being ignored.
		171
		172	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
		174	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
		176	them unless required to.
		177
		178	=item tls_ctx => $scheme \| $tls_ctx
		179
		180	Specifies the AnyEvent::TLS context to be used for https connections. This
		181	parameter follows the same rules as the C<tls_ctx> parameter to
		182	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		183	C<high> can be specified, which give you a predefined low-security (no
		184	verification, highest compatibility) and high-security (CA and common-name
		185	verification) TLS context.
		186
		187	The default for this option is C<low>, which could be interpreted as "give
		188	me the page, no matter what".
		189
112	=back	190	=back
113		191
114	=back	192	Example: make a simple HTTP GET request for http://www.nethype.de/
		193
		194	http_request GET => "http://www.nethype.de/", sub {
		195	my ($body, $hdr) = @_;
		196	print "$body\n";
		197	};
		198
		199	Example: make a HTTP HEAD request on https://www.google.com/, use a
		200	timeout of 30 seconds.
		201
		202	http_request
		203	GET => "https://www.google.com",
		204	timeout => 30,
		205	sub {
		206	my ($body, $hdr) = @_;
		207	use Data::Dumper;
		208	print Dumper $hdr;
		209	}
		210	;
		211
		212	Example: make another simple HTTP GET request, but immediately try to
		213	cancel it.
		214
		215	my $request = http_request GET => "http://www.nethype.de/", sub {
		216	my ($body, $hdr) = @_;
		217	print "$body\n";
		218	};
		219
		220	undef $request;
115		221
116	=cut	222	=cut
117		223
		224	sub _slot_schedule;
		225	sub _slot_schedule($) {
		226	my $host = shift;
		227
		228	while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) {
		229	if (my $cb = shift @{ $CO_SLOT{$host}[1] }) {
		230	# somebody wants that slot
		231	++$CO_SLOT{$host}[0];
		232	++$ACTIVE;
		233
		234	$cb->(AnyEvent::Util::guard {
		235	--$ACTIVE;
		236	--$CO_SLOT{$host}[0];
		237	_slot_schedule $host;
		238	});
		239	} else {
		240	# nobody wants the slot, maybe we can forget about it
		241	delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0];
		242	last;
		243	}
		244	}
		245	}
		246
		247	# wait for a free slot on host, call callback
		248	sub _get_slot($$) {
		249	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
		250
		251	_slot_schedule $_[0];
		252	}
		253
		254	our $qr_nl = qr<\015?\012>;
		255	our $qr_nlnl = qr<\015?\012\015?\012>;
		256
		257	our $TLS_CTX_LOW = { cache => 1, dh => undef, sslv2 => 1 };
		258	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_cn => "https", dh => "skip4096" };
		259
118	sub http_request($$$;@) {	260	sub http_request($$@) {
119	my $cb = pop;	261	my $cb = pop;
120	my ($method, $url, %arg) = @_;	262	my ($method, $url, %arg) = @_;
121		263
122	my %hdr;	264	my %hdr;
123		265
		266	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		267	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
		268
124	$method = uc $method;	269	$method = uc $method;
125		270
126	if (my $hdr = delete $arg{headers}) {	271	if (my $hdr = $arg{headers}) {
127	while (my ($k, $v) = each %$hdr) {	272	while (my ($k, $v) = each %$hdr) {
128	$hdr{lc $k} = $v;	273	$hdr{lc $k} = $v;
129	}	274	}
130	}	275	}
131		276
		277	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
		278
		279	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
		280	if $recurse < 0;
		281
132	my $proxy = $arg{proxy} \|\| $PROXY;	282	my $proxy = $arg{proxy} \|\| $PROXY;
133	my $timeout = $arg{timeout} \|\| $TIMEOUT;	283	my $timeout = $arg{timeout} \|\| $TIMEOUT;
134	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;
135		284
136	$hdr{"user-agent"} \|\|= $USERAGENT;	285	$hdr{"user-agent"} \|\|= $USERAGENT;
137		286
138	my ($host, $port, $path, $scheme);	287	my ($uscheme, $uauthority, $upath, $query, $fragment) =
		288	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
		289
		290	$uscheme = lc $uscheme;
		291
		292	my $uport = $uscheme eq "http" ? 80
		293	: $uscheme eq "https" ? 443
		294	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported (not '$uscheme')", URL => $url });
		295
		296	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
		297
		298	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
		299	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
		300
		301	my $uhost = $1;
		302	$uport = $2 if defined $2;
		303
		304	$uhost =~ s/^\[(.*)\]$/$1/;
		305	$upath .= "?$query" if length $query;
		306
		307	$upath =~ s%^/?%/%;
		308
		309	# cookie processing
		310	if (my $jar = $arg{cookie_jar}) {
		311	%$jar = () if $jar->{version} != 1;
		312
		313	my @cookie;
		314
		315	while (my ($chost, $v) = each %$jar) {
		316	if ($chost =~ /^\./) {
		317	next unless $chost eq substr $uhost, -length $chost;
		318	} elsif ($chost =~ /\./) {
		319	next unless $chost eq $uhost;
		320	} else {
		321	next;
		322	}
		323
		324	while (my ($cpath, $v) = each %$v) {
		325	next unless $cpath eq substr $upath, 0, length $cpath;
		326
		327	while (my ($k, $v) = each %$v) {
		328	next if $uscheme ne "https" && exists $v->{secure};
		329	my $value = $v->{value};
		330	$value =~ s/([\\"])/\\$1/g;
		331	push @cookie, "$k=\"$value\"";
		332	}
		333	}
		334	}
		335
		336	$hdr{cookie} = join "; ", @cookie
		337	if @cookie;
		338	}
		339
		340	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
139		341
140	if ($proxy) {	342	if ($proxy) {
141	($host, $port, $scheme) = @$proxy;	343	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
142	$path = $url;	344
		345	# don't support https requests over https-proxy transport,
		346	# can't be done with tls as spec'ed, unless you double-encrypt.
		347	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
143	} else {	348	} else {
144	($scheme, my $authority, $path, my $query, my $fragment) =	349	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
145	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
146
147	$port = $scheme eq "http" ? 80
148	: $scheme eq "https" ? 443
149	: croak "$url: only http and https URLs supported";
150
151	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
152	or croak "$authority: unparsable URL";
153
154	$host = $1;
155	$port = $2 if defined $2;
156
157	$host =~ s/^\[(.*)\]$/$1/;
158	$path .= "?$query" if length $query;
159
160	$path = "/" unless $path;
161
162	$hdr{host} = $host = lc $host;
163	}	350	}
164		351
165	$scheme = lc $scheme;	352	$hdr{host} = $uhost;
166
167	my %state;
168
169	$state{body} = delete $arg{body};
170
171	$hdr{"content-length"} = length $state{body};	353	$hdr{"content-length"} = length $arg{body};
172		354
		355	my %state = (connect_guard => 1);
		356
		357	_get_slot $uhost, sub {
		358	$state{slot_guard} = shift;
		359
		360	return unless $state{connect_guard};
		361
173	$state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub {	362	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
174	$state{fh} = shift	363	$state{fh} = shift
175	or return $cb->(undef, { Status => 599, Reason => "$!" });	364	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));
		365	pop; # free memory, save a tree
176		366
177	delete $state{connect_guard}; # reduce memory usage, save a tree	367	return unless delete $state{connect_guard};
178		368
179	# get handle	369	# get handle
180	$state{handle} = new AnyEvent::Handle	370	$state{handle} = new AnyEvent::Handle
181	fh => $state{fh},	371	fh => $state{fh},
182	($scheme eq "https" ? (tls => "connect") : ());	372	timeout => $timeout,
		373	peername => $rhost,
		374	tls_ctx => $arg{tls_ctx};
183		375
184	# limit the number of persistent connections	376	# limit the number of persistent connections
		377	# keepalive not yet supported
185	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	378	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
186	++$KA_COUNT{$_[1]};	379	++$KA_COUNT{$_[1]};
187	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	380	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		381	--$KA_COUNT{$_[1]}
		382	};
188	$hdr{connection} = "keep-alive";	383	$hdr{connection} = "keep-alive";
189	delete $hdr{connection}; # keep-alive not yet supported
190	} else {	384	} else {
191	delete $hdr{connection};	385	delete $hdr{connection};
192	}	386	}
193		387
194	# (re-)configure handle	388	# (re-)configure handle
195	$state{handle}->timeout ($timeout);
196	$state{handle}->on_error (sub {	389	$state{handle}->on_error (sub {
197	%state = ();	390	%state = ();
198	$cb->(undef, { Status => 599, Reason => "$!" });	391	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
199	});	392	});
200	$state{handle}->on_eof (sub {	393	$state{handle}->on_eof (sub {
201	%state = ();	394	%state = ();
202	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });	395	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
203	});
204
205	# send request
206	$state{handle}->push_write (
207	"$method $path HTTP/1.0\015\012"
208	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
209	. "\015\012"
210	. (delete $state{body})
211	);
212
213	%hdr = (); # reduce memory usage, save a kitten
214
215	# status line
216	$state{handle}->push_read (line => qr/\015?\012/, sub {
217	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
218	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
219
220	my %hdr = ( # response headers
221	HTTPVersion => ",$1",
222	Status => ",$2",
223	Reason => ",$3",
224	);	396	});
225		397
		398	$state{handle}->starttls ("connect") if $rscheme eq "https";
		399
		400	# handle actual, non-tunneled, request
		401	my $handle_actual_request = sub {
		402	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		403
		404	# send request
		405	$state{handle}->push_write (
		406	"$method $rpath HTTP/1.0\015\012"
		407	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
		408	. "\015\012"
		409	. (delete $arg{body})
		410	);
		411
		412	%hdr = (); # reduce memory usage, save a kitten
		413
		414	# status line
		415	$state{handle}->push_read (line => $qr_nl, sub {
		416	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		417	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
		418
		419	my %hdr = ( # response headers
		420	HTTPVersion => ",$1",
		421	Status => ",$2",
		422	Reason => ",$3",
		423	URL => ",$url"
		424	);
		425
226	# headers, could be optimized a bit	426	# headers, could be optimized a bit
227	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	427	$state{handle}->unshift_read (line => $qr_nlnl, sub {
228	for ("$_[1]\012") {	428	for ("$_[1]\012") {
229	# we support spaces in field names, as lotus domino	429	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
230	# creates them.	430
		431	# things seen, not parsed:
		432	# p3pP="NON CUR OTPi OUR NOR UNI"
		433
231	$hdr{lc $1} .= ",$2"	434	$hdr{lc $1} .= ",$2"
232	while /\G	435	while /\G
233	([^:\000-\037]+):	436	([^:\000-\037]+):
234	[\011\040]*	437	[\011\040]*
235	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	438	((?: [^\012]+ \| \012[\011\040] )*)
236	\015?\012	439	\012
237	/gxc;	440	/gxc;
238		441
239	/\G$/	442	/\G$/
240	or return $cb->(undef, { Status => 599, Reason => "garbled response headers" });	443	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
241	}	444	}
242		445
243	substr $_, 0, 1, ""	446	substr $_, 0, 1, ""
244	for values %hdr;	447	for values %hdr;
245		448
246	if ($method eq "HEAD") {	449	my $finish = sub {
247	%state = ();	450	$state{handle}->destroy;
248	$cb->(undef, \%hdr);
249	} else {
250	if (exists $hdr{"content-length"}) {
251	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
252	# could cache persistent connection now
253	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
254	# but we don't, due to misdesigns, this is annoyingly complex
255	};
256
257	%state = ();	451	%state = ();
		452
		453	# set-cookie processing
		454	if ($arg{cookie_jar}) {
		455	for ($hdr{"set-cookie"}) {
		456	# parse NAME=VALUE
		457	my @kv;
		458
		459	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		460	my $name = $1;
		461	my $value = $3;
		462
		463	unless ($value) {
		464	$value = $2;
		465	$value =~ s/\\(.)/$1/gs;
		466	}
		467
		468	push @kv, $name => $value;
		469
		470	last unless /\G\s*;/gc;
		471	}
		472
		473	last unless @kv;
		474
		475	my $name = shift @kv;
		476	my %kv = (value => shift @kv, @kv);
		477
		478	my $cdom;
		479	my $cpath = (delete $kv{path}) \|\| "/";
		480
		481	if (exists $kv{domain}) {
		482	$cdom = delete $kv{domain};
		483
		484	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		485
		486	next if $cdom =~ /\.$/;
		487
		488	# this is not rfc-like and not netscape-like. go figure.
		489	my $ndots = $cdom =~ y/.//;
		490	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		491	} else {
		492	$cdom = $uhost;
		493	}
		494
		495	# store it
		496	$arg{cookie_jar}{version} = 1;
		497	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		498
		499	redo if /\G\s*,/gc;
		500	}
		501	}
		502
		503	# microsoft and other shitheads don't give a shit for following standards,
		504	# try to support some common forms of broken Location headers.
		505	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		506	$_[1]{location} =~ s/^\.\/+//;
		507
		508	my $url = "$rscheme://$uhost:$uport";
		509
		510	unless ($_[1]{location} =~ s/^\///) {
		511	$url .= $upath;
		512	$url =~ s/\/[^\/]*$//;
		513	}
		514
		515	$_[1]{location} = "$url/$_[1]{location}";
		516	}
		517
		518	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
		519	# apparently, mozilla et al. just change POST to GET here
		520	# more research is needed before we do the same
		521	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
		522	} elsif ($_[1]{Status} == 303 && $recurse) {
		523	# even http/1.1 is unclear on how to mutate the method
		524	$method = "GET" unless $method eq "HEAD";
		525	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
		526	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
		527	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
		528	} else {
258	$cb->($_[1], \%hdr);	529	$cb->($_[0], $_[1]);
		530	}
259	});	531	};
		532
		533	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {
		534	$finish->(undef, \%hdr);
		535	} else {
		536	if (exists $hdr{"content-length"}) {
		537	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
		538	# could cache persistent connection now
		539	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
		540	# but we don't, due to misdesigns, this is annoyingly complex
		541	};
		542
		543	$finish->($_[1], \%hdr);
		544	});
		545	} else {
		546	# too bad, need to read until we get an error or EOF,
		547	# no way to detect winged data.
		548	$_[0]->on_error (sub {
		549	# delete ought to be more efficient, as we would have to make
		550	# a copy otherwise as $_[0] gets destroyed.
		551	$finish->(delete $_[0]{rbuf}, \%hdr);
		552	});
		553	$_[0]->on_eof (undef);
		554	$_[0]->on_read (sub { });
		555	}
		556	}
		557	});
		558	});
		559	};
		560
		561	# now handle proxy-CONNECT method
		562	if ($proxy && $uscheme eq "https") {
		563	# oh dear, we have to wrap it into a connect request
		564
		565	# maybe re-use $uauthority with patched port?
		566	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		567	$state{handle}->push_read (line => $qr_nlnl, sub {
		568	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		569	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
		570
		571	if ($2 == 200) {
		572	$rpath = $upath;
		573	&$handle_actual_request;
260	} else {	574	} else {
261	# too bad, need to read until we get an error or EOF,
262	# no way to detect winged data.
263	$_[0]->on_error (sub {
264	%state = ();	575	%state = ();
265	$cb->($_[0]{rbuf}, \%hdr);	576	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
266	});
267	$_[0]->on_eof (undef);
268	$_[0]->on_read (sub { });
269	}	577	}
270	}	578	});
		579	} else {
		580	&$handle_actual_request;
271	});	581	}
		582
		583	}, sub {
		584	$timeout
272	});	585	};
273	}, sub {
274	$timeout
275	};	586	};
276		587
277	defined wantarray && AnyEvent::Util::guard { %state = () }	588	defined wantarray && AnyEvent::Util::guard { %state = () }
278	}	589	}
279		590
280	sub http_get($$;@) {	591	sub http_get($@) {
281	unshift @_, "GET";	592	unshift @_, "GET";
282	&http_request	593	&http_request
283	}	594	}
284		595
285	sub http_head($$;@) {	596	sub http_head($@) {
286	unshift @_, "HEAD";	597	unshift @_, "HEAD";
287	&http_request	598	&http_request
288	}	599	}
289		600
290	sub http_post($$$;@) {	601	sub http_post($$@) {
		602	my $url = shift;
291	unshift @_, "POST", "body";	603	unshift @_, "POST", $url, "body";
292	&http_request	604	&http_request
293	}	605	}
294		606
		607	=back
		608
295	=head2 GLOBAL FUNCTIONS AND VARIABLES	609	=head2 GLOBAL FUNCTIONS AND VARIABLES
296		610
297	=over 4	611	=over 4
298		612
299	=item AnyEvent::HTTP::set_proxy "proxy-url"	613	=item AnyEvent::HTTP::set_proxy "proxy-url"
…		…
306	The default value for the C<recurse> request parameter (default: C<10>).	620	The default value for the C<recurse> request parameter (default: C<10>).
307		621
308	=item $AnyEvent::HTTP::USERAGENT	622	=item $AnyEvent::HTTP::USERAGENT
309		623
310	The default value for the C<User-Agent> header (the default is	624	The default value for the C<User-Agent> header (the default is
311	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	625	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
312		626
313	=item $AnyEvent::HTTP::MAX_PERSISTENT	627	=item $AnyEvent::HTTP::MAX_PERSISTENT
314		628
315	The maximum number of persistent connections to keep open (default: 8).	629	The maximum number of persistent connections to keep open (default: 8).
316		630
…		…
319	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT	633	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
320		634
321	The maximum time to cache a persistent connection, in seconds (default: 2).	635	The maximum time to cache a persistent connection, in seconds (default: 2).
322		636
323	Not implemented currently.	637	Not implemented currently.
		638
		639	=item $AnyEvent::HTTP::ACTIVE
		640
		641	The number of active connections. This is not the number of currently
		642	running requests, but the number of currently open and non-idle TCP
		643	connections. This number of can be useful for load-leveling.
324		644
325	=back	645	=back
326		646
327	=cut	647	=cut
328		648
…		…
337		657
338	L<AnyEvent>.	658	L<AnyEvent>.
339		659
340	=head1 AUTHOR	660	=head1 AUTHOR
341		661
342	Marc Lehmann <schmorp@schmorp.de>	662	Marc Lehmann <schmorp@schmorp.de>
343	http://home.schmorp.de/	663	http://home.schmorp.de/
		664
		665	With many thanks to Дмитрий Шалашов, who provided countless
		666	testcases and bugreports.
344		667
345	=cut	668	=cut
346		669
347	1	670	1
348		671

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.4 by root, Wed Jun 4 11:59:22 2008 UTC vs. Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.4 by root, Wed Jun 4 11:59:22 2008 UTC vs.
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC