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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.18 by root, Fri Jun 6 16:23:57 2008 UTC vs.
Revision 1.47 by root, Wed Aug 5 16:07:48 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 = '1.01';	53	our $VERSION = '1.41';
54		54
55	our @EXPORT = qw(http_get http_post http_head http_request);	55	our @EXPORT = qw(http_get http_post http_head http_request);
56		56
57	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	58	our $MAX_RECURSE = 10;
59	our $MAX_PERSISTENT = 8;	59	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	60	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	61	our $TIMEOUT = 300;
62		62
63	# changing these is evil	63	# changing these is evil
64	our $MAX_PERSISTENT_PER_HOST = 2;	64	our $MAX_PERSISTENT_PER_HOST = 0;
65	our $MAX_PER_HOST = 4;	65	our $MAX_PER_HOST = 4;
66		66
67	our $PROXY;	67	our $PROXY;
68	our $ACTIVE = 0;	68	our $ACTIVE = 0;
69		69
…		…
71	my %CO_SLOT; # number of open connections, and wait queue, per host	71	my %CO_SLOT; # number of open connections, and wait queue, per host
72		72
73	=item http_get $url, key => value..., $cb->($data, $headers)	73	=item http_get $url, key => value..., $cb->($data, $headers)
74		74
75	Executes an HTTP-GET request. See the http_request function for details on	75	Executes an HTTP-GET request. See the http_request function for details on
76	additional parameters.	76	additional parameters and the return value.
77		77
78	=item http_head $url, key => value..., $cb->($data, $headers)	78	=item http_head $url, key => value..., $cb->($data, $headers)
79		79
80	Executes an HTTP-HEAD request. See the http_request function for details on	80	Executes an HTTP-HEAD request. See the http_request function for details
81	additional parameters.	81	on additional parameters and the return value.
82		82
83	=item http_post $url, $body, key => value..., $cb->($data, $headers)	83	=item http_post $url, $body, key => value..., $cb->($data, $headers)
84		84
85	Executes an HTTP-POST request with a request body of C<$bod>. See the	85	Executes an HTTP-POST request with a request body of C<$body>. See the
86	http_request function for details on additional parameters.	86	http_request function for details on additional parameters and the return
		87	value.
87		88
88	=item http_request $method => $url, key => value..., $cb->($data, $headers)	89	=item http_request $method => $url, key => value..., $cb->($data, $headers)
89		90
90	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	91	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
91	must be an absolute http or https URL.	92	must be an absolute http or https URL.
92		93
		94	When called in void context, nothing is returned. In other contexts,
		95	C<http_request> returns a "cancellation guard" - you have to keep the
		96	object at least alive until the callback get called. If the object gets
		97	destroyed before the callbakc is called, the request will be cancelled.
		98
93	The callback will be called with the response data as first argument	99	The callback will be called with the response body data as first argument
94	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if an error occured), and a hash-ref with response headers as
95	response headers as second argument.	101	second argument.
96		102
97	All the headers in that hash are lowercased. In addition to the response	103	All the headers in that hash are lowercased. In addition to the response
98	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
99	C<Reason> contain the three parts of the HTTP Status-Line of the same	105	contain the three parts of the HTTP Status-Line of the same name. The
		106	pseudo-header C<URL> contains the original URL (which can differ from the
		107	requested URL when following redirects).
		108
100	name. If the server sends a header multiple lines, then their contents	109	If the server sends a header multiple times, then their contents will be
101	will be joined together with C<\x00>.	110	joined together with a comma (C<,>), as per the HTTP spec.
102		111
103	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
104	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
105	and the C<Reason> pseudo-header will contain an error message.	114	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		115	message.
106		116
107	A typical callback might look like this:	117	A typical callback might look like this:
108		118
109	sub {	119	sub {
110	my ($body, $hdr) = @_;	120	my ($body, $hdr) = @_;
…		…
128		138
129	=item headers => hashref	139	=item headers => hashref
130		140
131	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
132	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
133	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	send at all).
134		146
135	=item timeout => $seconds	147	=item timeout => $seconds
136		148
137	The time-out to use for various stages - each connect attempt will reset	149	The time-out to use for various stages - each connect attempt will reset
138	the timeout, as will read or write activity. Default timeout is 5 minutes.	150	the timeout, as will read or write activity. Default timeout is 5 minutes.
…		…
140	=item proxy => [$host, $port[, $scheme]] or undef	152	=item proxy => [$host, $port[, $scheme]] or undef
141		153
142	Use the given http proxy for all requests. If not specified, then the	154	Use the given http proxy for all requests. If not specified, then the
143	default proxy (as specified by C<$ENV{http_proxy}>) is used.	155	default proxy (as specified by C<$ENV{http_proxy}>) is used.
144		156
145	C<$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
146	HTTPS.	158	HTTPS.
147		159
148	=item body => $string	160	=item body => $string
149		161
150	The request body, usually empty. Will be-sent as-is (future versions of	162	The request body, usually empty. Will be-sent as-is (future versions of
…		…
156	based on the original netscape specification.	168	based on the original netscape specification.
157		169
158	The C<$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
159	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
160	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
161	recommended, as expire times are currently being ignored.	173	recommended, as expiry times are currently being ignored.
162		174
163	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
164	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
165	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
166	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
167	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.
168		254
169	=back	255	=back
170		256
171	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/
172		258
…		…
185	my ($body, $hdr) = @_;	271	my ($body, $hdr) = @_;
186	use Data::Dumper;	272	use Data::Dumper;
187	print Dumper $hdr;	273	print Dumper $hdr;
188	}	274	}
189	;	275	;
		276
		277	Example: make another simple HTTP GET request, but immediately try to
		278	cancel it.
		279
		280	my $request = http_request GET => "http://www.nethype.de/", sub {
		281	my ($body, $hdr) = @_;
		282	print "$body\n";
		283	};
		284
		285	undef $request;
190		286
191	=cut	287	=cut
192		288
193	sub _slot_schedule;	289	sub _slot_schedule;
194	sub _slot_schedule($) {	290	sub _slot_schedule($) {
…		…
218	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	314	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
219		315
220	_slot_schedule $_[0];	316	_slot_schedule $_[0];
221	}	317	}
222		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
223	sub http_request($$@) {	325	sub http_request($$@) {
224	my $cb = pop;	326	my $cb = pop;
225	my ($method, $url, %arg) = @_;	327	my ($method, $url, %arg) = @_;
226		328
227	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";
228		333
229	$method = uc $method;	334	$method = uc $method;
230		335
231	if (my $hdr = $arg{headers}) {	336	if (my $hdr = $arg{headers}) {
232	while (my ($k, $v) = each %$hdr) {	337	while (my ($k, $v) = each %$hdr) {
233	$hdr{lc $k} = $v;	338	$hdr{lc $k} = $v;
234	}	339	}
235	}	340	}
236		341
237	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	342	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
238		343
239	return $cb->(undef, { Status => 599, Reason => "recursion limit reached" })	344	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
240	if $recurse < 0;	345	if $recurse < 0;
241		346
242	my $proxy = $arg{proxy} \|\| $PROXY;	347	my $proxy = $arg{proxy} \|\| $PROXY;
243	my $timeout = $arg{timeout} \|\| $TIMEOUT;	348	my $timeout = $arg{timeout} \|\| $TIMEOUT;
244		349
245	$hdr{"user-agent"} \|\|= $USERAGENT;
246
247	my ($scheme, $authority, $upath, $query, $fragment) =	350	my ($uscheme, $uauthority, $upath, $query, $fragment) =
248	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	351	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
249		352
250	$scheme = lc $scheme;	353	$uscheme = lc $uscheme;
251		354
252	my $uport = $scheme eq "http" ? 80	355	my $uport = $uscheme eq "http" ? 80
253	: $scheme eq "https" ? 443	356	: $uscheme eq "https" ? 443
254	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" });	357	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
255		358
256	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
257
258	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	359	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
259	or return $cb->(undef, { Status => 599, Reason => "unparsable URL" });	360	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
260		361
261	my $uhost = $1;	362	my $uhost = $1;
262	$uport = $2 if defined $2;	363	$uport = $2 if defined $2;
263		364
		365	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
		366
264	$uhost =~ s/^\[(.*)\]$/$1/;	367	$uhost =~ s/^\[(.*)\]$/$1/;
265	$upath .= "?$query" if length $query;	368	$upath .= "?$query" if length $query;
266		369
267	$upath =~ s%^/?%/%;	370	$upath =~ s%^/?%/%;
268		371
269	# cookie processing	372	# cookie processing
270	if (my $jar = $arg{cookie_jar}) {	373	if (my $jar = $arg{cookie_jar}) {
271	%$jar = () if $jar->{version} < 1;	374	%$jar = () if $jar->{version} != 1;
272		375
273	my @cookie;	376	my @cookie;
274		377
275	while (my ($chost, $v) = each %$jar) {	378	while (my ($chost, $v) = each %$jar) {
		379	if ($chost =~ /^\./) {
276	next unless $chost eq substr $uhost, -length $chost;	380	next unless $chost eq substr $uhost, -length $chost;
277	next unless $chost =~ /^\./;	381	} elsif ($chost =~ /\./) {
		382	next unless $chost eq $uhost;
		383	} else {
		384	next;
		385	}
278		386
279	while (my ($cpath, $v) = each %$v) {	387	while (my ($cpath, $v) = each %$v) {
280	next unless $cpath eq substr $upath, 0, length $cpath;	388	next unless $cpath eq substr $upath, 0, length $cpath;
281		389
282	while (my ($k, $v) = each %$v) {	390	while (my ($k, $v) = each %$v) {
283	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;
284	push @cookie, "$k=$v->{value}";	394	push @cookie, "$k=\"$value\"";
285	}	395	}
286	}	396	}
287	}	397	}
288		398
289	$hdr{cookie} = join "; ", @cookie	399	$hdr{cookie} = join "; ", @cookie
290	if @cookie;	400	if @cookie;
291	}	401	}
292		402
293	my ($rhost, $rport, $rpath); # request host, port, path	403	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
294		404
295	if ($proxy) {	405	if ($proxy) {
296	($rhost, $rport, $scheme) = @$proxy;	406	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
297	$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" && $rscheme eq "https";
298	} else {	413	} else {
299	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	414	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
300	$hdr{host} = $uhost;
301	}	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"};
302		420
303	$hdr{"content-length"} = length $arg{body};	421	$hdr{"content-length"} = length $arg{body};
304		422
305	my %state = (connect_guard => 1);	423	my %state = (connect_guard => 1);
306		424
…		…
309		427
310	return unless $state{connect_guard};	428	return unless $state{connect_guard};
311		429
312	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	430	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
313	$state{fh} = shift	431	$state{fh} = shift
		432	or do {
		433	my $err = "$!";
		434	%state = ();
314	or return $cb->(undef, { Status => 599, Reason => "$!" });	435	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
		436	};
315		437
316	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};
317		441
318	# get handle	442	# get handle
319	$state{handle} = new AnyEvent::Handle	443	$state{handle} = new AnyEvent::Handle
320	fh => $state{fh},	444	fh => $state{fh},
321	($scheme eq "https" ? (tls => "connect") : ());	445	timeout => $timeout,
		446	peername => $rhost,
		447	tls_ctx => $arg{tls_ctx};
322		448
323	# limit the number of persistent connections	449	# limit the number of persistent connections
		450	# keepalive not yet supported
324	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	451	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
325	++$KA_COUNT{$_[1]};	452	++$KA_COUNT{$_[1]};
326	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	453	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		454	--$KA_COUNT{$_[1]}
		455	};
327	$hdr{connection} = "keep-alive";	456	$hdr{connection} = "keep-alive";
328	delete $hdr{connection}; # keep-alive not yet supported
329	} else {	457	} else {
330	delete $hdr{connection};	458	delete $hdr{connection};
331	}	459	}
332		460
333	# (re-)configure handle	461	# (re-)configure handle
334	$state{handle}->timeout ($timeout);
335	$state{handle}->on_error (sub {	462	$state{handle}->on_error (sub {
336	my $errno = "$!";
337	%state = ();	463	%state = ();
338	$cb->(undef, { Status => 599, Reason => $errno });	464	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
339	});	465	});
340	$state{handle}->on_eof (sub {	466	$state{handle}->on_eof (sub {
341	%state = ();	467	%state = ();
342	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });	468	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
343	});	469	});
344		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
345	# send request	477	# send request
346	$state{handle}->push_write (	478	$state{handle}->push_write (
347	"$method $rpath HTTP/1.0\015\012"	479	"$method $rpath HTTP/1.0\015\012"
348	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	480	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
349	. "\015\012"	481	. "\015\012"
350	. (delete $arg{body})	482	. (delete $arg{body})
351	);
352
353	%hdr = (); # reduce memory usage, save a kitten
354
355	# status line
356	$state{handle}->push_read (line => qr/\015?\012/, sub {
357	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
358	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
359
360	my %hdr = ( # response headers
361	HTTPVersion => "\x00$1",
362	Status => "\x00$2",
363	Reason => "\x00$3",
364	);	483	);
365		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
366	# headers, could be optimized a bit	499	# headers, could be optimized a bit
367	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	500	$state{handle}->unshift_read (line => $qr_nlnl, sub {
368	for ("$_[1]\012") {	501	for ("$_[1]") {
369	# 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.
370	# creates them.	503
		504	# things seen, not parsed:
		505	# p3pP="NON CUR OTPi OUR NOR UNI"
		506
371	$hdr{lc $1} .= "\x00$2"	507	$hdr{lc $1} .= ",$2"
372	while /\G	508	while /\G
373	([^:\000-\037]+):	509	([^:\000-\037]*):
374	[\011\040]*	510	[\011\040]*
375	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	511	((?: [^\012]+ \| \012[\011\040] )*)
376	\015?\012	512	\012
377	/gxc;	513	/gxc;
378		514
379	/\G$/	515	/\G$/
380	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" }));	516	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
381	}	517	}
382		518
383	substr $_, 0, 1, ""	519	substr $_, 0, 1, ""
384	for values %hdr;	520	for values %hdr;
385		521
386	my $finish = sub {	522	# redirect handling
387	%state = ();	523	# microsoft and other shitheads don't give a shit for following standards,
		524	# try to support some common forms of broken Location headers.
		525	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		526	$hdr{location} =~ s/^\.\/+//;
388		527
389	# set-cookie processing	528	my $url = "$rscheme://$uhost:$uport";
390	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
391	for (split /\x00/, $hdr{"set-cookie"}) {
392	my ($cookie, @arg) = split /;\s*/;
393	my ($name, $value) = split /=/, $cookie, 2;
394	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
395
396	my $cdom = (delete $kv{domain}) \|\| $uhost;
397	my $cpath = (delete $kv{path}) \|\| "/";
398
399	$cdom =~ s/^.?/./; # make sure it starts with a "."
400		529
401	next if $cdom =~ /\.$/;	530	unless ($hdr{location} =~ s/^\///) {
402		531	$url .= $upath;
403	# this is not rfc-like and not netscape-like. go figure.	532	$url =~ s/\/[^\/]*$//;
404	my $ndots = $cdom =~ y/.//;	533	}
405	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	534
406		535	$hdr{location} = "$url/$hdr{location}";
		536	}
		537
		538	my $redirect;
		539
		540	if ($recurse) {
		541	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		542	# apparently, mozilla et al. just change POST to GET here
		543	# more research is needed before we do the same
407	# store it	544	$redirect = 1;
408	$arg{cookie_jar}{version} = 1;	545	} elsif ($hdr{Status} == 303) {
409	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	546	# even http/1.1 is unclear on how to mutate the method
		547	$method = "GET" unless $method eq "HEAD";
		548	$redirect = 1;
		549	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		550	$redirect = 1;
410	}	551	}
411	}	552	}
412		553
413	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	554	my $finish = sub {
414	# microsoft and other assholes don't give a shit for following standards,	555	$state{handle}->destroy if $state{handle};
415	# try to support a common form of broken Location header.	556	%state = ();
416	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
417		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 $_[1] might be an erro
418	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	612	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
		613	} else {
		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);
419	} else {	629	} else {
420	$cb->($_[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	$_[0]->on_read (sub { });
		678	}
		679	}
421	}	680	}
422	};	681	});
		682	});
		683	};
423		684
424	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	685	# now handle proxy-CONNECT method
425	$finish->(undef, \%hdr);	686	if ($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;
426	} else {	698	} else {
427	if (exists $hdr{"content-length"}) {	699	%state = ();
428	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	700	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
429	# could cache persistent connection now
430	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
431	# but we don't, due to misdesigns, this is annoyingly complex
432	};
433
434	$finish->($_[1], \%hdr);
435	});
436	} else {
437	# too bad, need to read until we get an error or EOF,
438	# no way to detect winged data.
439	$_[0]->on_error (sub {
440	$finish->($_[0]{rbuf}, \%hdr);
441	});
442	$_[0]->on_eof (undef);
443	$_[0]->on_read (sub { });
444	}
445	}	701	}
446	});	702	});
		703	} else {
		704	&$handle_actual_request;
447	});	705	}
		706
448	}, sub {	707	}, sub {
449	$timeout	708	$timeout
450	};	709	};
451	};	710	};
452		711
…		…
462	unshift @_, "HEAD";	721	unshift @_, "HEAD";
463	&http_request	722	&http_request
464	}	723	}
465		724
466	sub http_post($$@) {	725	sub http_post($$@) {
		726	my $url = shift;
467	unshift @_, "POST", "body";	727	unshift @_, "POST", $url, "body";
468	&http_request	728	&http_request
469	}	729	}
470		730
471	=back	731	=back
472		732
…		…
484	The default value for the C<recurse> request parameter (default: C<10>).	744	The default value for the C<recurse> request parameter (default: C<10>).
485		745
486	=item $AnyEvent::HTTP::USERAGENT	746	=item $AnyEvent::HTTP::USERAGENT
487		747
488	The default value for the C<User-Agent> header (the default is	748	The default value for the C<User-Agent> header (the default is
489	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	749	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
490		750
491	=item $AnyEvent::HTTP::MAX_PERSISTENT	751	=item $AnyEvent::HTTP::MAX_PER_HOST
492		752
493	The maximum number of persistent connections to keep open (default: 8).	753	The maximum number of concurrent connections to the same host (identified
		754	by the hostname). If the limit is exceeded, then the additional requests
		755	are queued until previous connections are closed.
494		756
495	Not implemented currently.	757	The default value for this is C<4>, and it is highly advisable to not
496		758	increase it.
497	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
498
499	The maximum time to cache a persistent connection, in seconds (default: 2).
500
501	Not implemented currently.
502		759
503	=item $AnyEvent::HTTP::ACTIVE	760	=item $AnyEvent::HTTP::ACTIVE
504		761
505	The number of active connections. This is not the number of currently	762	The number of active connections. This is not the number of currently
506	running requests, but the number of currently open and non-idle TCP	763	running requests, but the number of currently open and non-idle TCP
…		…
524	=head1 AUTHOR	781	=head1 AUTHOR
525		782
526	Marc Lehmann <schmorp@schmorp.de>	783	Marc Lehmann <schmorp@schmorp.de>
527	http://home.schmorp.de/	784	http://home.schmorp.de/
528		785
		786	With many thanks to Дмитрий Шалашов, who provided countless
		787	testcases and bugreports.
		788
529	=cut	789	=cut
530		790
531	1	791	1
532		792

Diff Legend

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

Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.18 by root, Fri Jun 6 16:23:57 2008 UTC vs. Revision 1.47 by root, Wed Aug 5 16:07:48 2009 UTC

Diff Legend

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.18 by root, Fri Jun 6 16:23:57 2008 UTC vs.
Revision 1.47 by root, Wed Aug 5 16:07:48 2009 UTC