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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.35 by root, Thu Oct 30 03:47:01 2008 UTC vs.
Revision 1.70 by root, Fri Dec 31 20:31:47 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 ();
49	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
50		49
51	use base Exporter::;	50	use base Exporter::;
52		51
53	our $VERSION = '1.1';	52	our $VERSION = '1.5';
54		53
55	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
56		55
57	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
59	our $MAX_PERSISTENT = 8;	58	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	59	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	60	our $TIMEOUT = 300;
62		61
63	# changing these is evil	62	# changing these is evil
64	our $MAX_PERSISTENT_PER_HOST = 2;	63	our $MAX_PERSISTENT_PER_HOST = 0;
65	our $MAX_PER_HOST = 4;	64	our $MAX_PER_HOST = 4;
66		65
67	our $PROXY;	66	our $PROXY;
68	our $ACTIVE = 0;	67	our $ACTIVE = 0;
69		68
…		…
92	must be an absolute http or https URL.	91	must be an absolute http or https URL.
93		92
94	When called in void context, nothing is returned. In other contexts,	93	When called in void context, nothing is returned. In other contexts,
95	C<http_request> returns a "cancellation guard" - you have to keep the	94	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	95	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.	96	destroyed before the callback is called, the request will be cancelled.
98		97
99	The callback will be called with the response data as first argument	98	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	99	(or C<undef> if an error occured), and a hash-ref with response headers
101	response headers as second argument.	100	(and trailers) as second argument.
102		101
103	All the headers in that hash are lowercased. In addition to the response	102	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>	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	contain the three parts of the HTTP Status-Line of the same name. The	105	three parts of the HTTP Status-Line of the same name. If an error occurs
		106	during the body phase of a request, then the original C<Status> and
		107	C<Reason> values from the header are available as C<OrigStatus> and
		108	C<OrigReason>.
		109
106	pseudo-header C<URL> contains the original URL (which can differ from the	110	The pseudo-header C<URL> contains the actual URL (which can differ from
107	requested URL when following redirects).	111	the requested URL when following redirects - for example, you might get
		112	an error that your URL scheme is not supported even though your URL is a
		113	valid http URL because it redirected to an ftp URL, in which case you can
		114	look at the URL pseudo header).
		115
		116	The pseudo-header C<Redirect> only exists when the request was a result
		117	of an internal redirect. In that case it is an array reference with
		118	the C<($data, $headers)> from the redirect response. Note that this
		119	response could in turn be the result of a redirect itself, and C<<
		120	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
108		122
109	If the server sends a header multiple times, then their contents will be	123	If the server sends a header multiple times, then their contents will be
110	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
111		125
112	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
114	and the C<Reason> pseudo-header will contain an error message.	128	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		129	message.
115		130
116	A typical callback might look like this:	131	A typical callback might look like this:
117		132
118	sub {	133	sub {
119	my ($body, $hdr) = @_;	134	my ($body, $hdr) = @_;
…		…
135	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
136	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
137		152
138	=item headers => hashref	153	=item headers => hashref
139		154
140	The request headers to use. Currently, C<http_request> may provide its	155	The request headers to use. Currently, C<http_request> may provide its own
141	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	156	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
142	and will provide defaults for C<User-Agent:> and C<Referer:>.	157	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		158	(this can be suppressed by using C<undef> for these headers in which case
		159	they won't be sent at all).
143		160
144	=item timeout => $seconds	161	=item timeout => $seconds
145		162
146	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
147	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
148		168
149	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
150		170
151	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
152	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
153		173
154	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	174	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
155	HTTPS.	175	HTTPS.
156		176
157	=item body => $string	177	=item body => $string
158		178
159	The request body, usually empty. Will be-sent as-is (future versions of	179	The request body, usually empty. Will be sent as-is (future versions of
160	this module might offer more options).	180	this module might offer more options).
161		181
162	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
163		183
164	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
165	based on the original netscape specification.	185	based on the original netscape specification.
166		186
167	The C<$hash_ref> must be an (initially empty) hash reference which will	187	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	188	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	189	persistent storage with something like JSON or Storable, but this is not
170	recommended, as expire times are currently being ignored.	190	recommended, as session-only cookies might survive longer than expected.
171		191
172	Note that this cookie implementation is not of very high quality, nor	192	Note that this cookie implementation is not meant to be complete. If
173	meant to be complete. If you want complete cookie management you have to	193	you want complete cookie management you have to do that on your
174	do that on your own. C<cookie_jar> is meant as a quick fix to get some	194	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
175	cookie-using sites working. Cookies are a privacy disaster, do not use	195	working. Cookies are a privacy disaster, do not use them unless required
176	them unless required to.	196	to.
		197
		198	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		199	headers will be set and handled by this module, otherwise they will be
		200	left untouched.
		201
		202	=item tls_ctx => $scheme \| $tls_ctx
		203
		204	Specifies the AnyEvent::TLS context to be used for https connections. This
		205	parameter follows the same rules as the C<tls_ctx> parameter to
		206	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		207	C<high> can be specified, which give you a predefined low-security (no
		208	verification, highest compatibility) and high-security (CA and common-name
		209	verification) TLS context.
		210
		211	The default for this option is C<low>, which could be interpreted as "give
		212	me the page, no matter what".
		213
		214	=item on_prepare => $callback->($fh)
		215
		216	In rare cases you need to "tune" the socket before it is used to
		217	connect (for exmaple, to bind it on a given IP address). This parameter
		218	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		219	and behaves exactly the same way (e.g. it has to provide a
		220	timeout). See the description for the C<$prepare_cb> argument of
		221	C<AnyEvent::Socket::tcp_connect> for details.
		222
		223	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		224
		225	In even rarer cases you want total control over how AnyEvent::HTTP
		226	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		227	to do this, but you can provide your own C<tcp_connect> function -
		228	obviously, it has to follow the same calling conventions, except that it
		229	may always return a connection guard object.
		230
		231	There are probably lots of weird uses for this function, starting from
		232	tracing the hosts C<http_request> actually tries to connect, to (inexact
		233	but fast) host => IP address caching or even socks protocol support.
		234
		235	=item on_header => $callback->($headers)
		236
		237	When specified, this callback will be called with the header hash as soon
		238	as headers have been successfully received from the remote server (not on
		239	locally-generated errors).
		240
		241	It has to return either true (in which case AnyEvent::HTTP will continue),
		242	or false, in which case AnyEvent::HTTP will cancel the download (and call
		243	the finish callback with an error code of C<598>).
		244
		245	This callback is useful, among other things, to quickly reject unwanted
		246	content, which, if it is supposed to be rare, can be faster than first
		247	doing a C<HEAD> request.
		248
		249	The downside is that cancelling the request makes it impossible to re-use
		250	the connection. Also, the C<on_header> callback will not receive any
		251	trailer (headers sent after the response body).
		252
		253	Example: cancel the request unless the content-type is "text/html".
		254
		255	on_header => sub {
		256	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		257	},
		258
		259	=item on_body => $callback->($partial_body, $headers)
		260
		261	When specified, all body data will be passed to this callback instead of
		262	to the completion callback. The completion callback will get the empty
		263	string instead of the body data.
		264
		265	It has to return either true (in which case AnyEvent::HTTP will continue),
		266	or false, in which case AnyEvent::HTTP will cancel the download (and call
		267	the completion callback with an error code of C<598>).
		268
		269	The downside to cancelling the request is that it makes it impossible to
		270	re-use the connection.
		271
		272	This callback is useful when the data is too large to be held in memory
		273	(so the callback writes it to a file) or when only some information should
		274	be extracted, or when the body should be processed incrementally.
		275
		276	It is usually preferred over doing your own body handling via
		277	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		278	only used to create a connection, C<want_body_handle> is the better
		279	alternative, as it allows you to install your own event handler, reducing
		280	resource usage.
		281
		282	=item want_body_handle => $enable
		283
		284	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		285	changes considerably: after parsing the headers, and instead of
		286	downloading the body (if any), the completion callback will be
		287	called. Instead of the C<$body> argument containing the body data, the
		288	callback will receive the L<AnyEvent::Handle> object associated with the
		289	connection. In error cases, C<undef> will be passed. When there is no body
		290	(e.g. status C<304>), the empty string will be passed.
		291
		292	The handle object might or might not be in TLS mode, might be connected to
		293	a proxy, be a persistent connection etc., and configured in unspecified
		294	ways. The user is responsible for this handle (it will not be used by this
		295	module anymore).
		296
		297	This is useful with some push-type services, where, after the initial
		298	headers, an interactive protocol is used (typical example would be the
		299	push-style twitter API which starts a JSON/XML stream).
		300
		301	If you think you need this, first have a look at C<on_body>, to see if
		302	that doesn't solve your problem in a better way.
177		303
178	=back	304	=back
179		305
180	Example: make a simple HTTP GET request for http://www.nethype.de/	306	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		307	the response body.
181		308
182	http_request GET => "http://www.nethype.de/", sub {	309	http_request GET => "http://www.nethype.de/", sub {
183	my ($body, $hdr) = @_;	310	my ($body, $hdr) = @_;
184	print "$body\n";	311	print "$body\n";
185	};	312	};
186		313
187	Example: make a HTTP HEAD request on https://www.google.com/, use a	314	Example: do a HTTP HEAD request on https://www.google.com/, use a
188	timeout of 30 seconds.	315	timeout of 30 seconds.
189		316
190	http_request	317	http_request
191	GET => "https://www.google.com",	318	GET => "https://www.google.com",
192	timeout => 30,	319	timeout => 30,
…		…
195	use Data::Dumper;	322	use Data::Dumper;
196	print Dumper $hdr;	323	print Dumper $hdr;
197	}	324	}
198	;	325	;
199		326
200	Example: make another simple HTTP GET request, but immediately try to	327	Example: do another simple HTTP GET request, but immediately try to
201	cancel it.	328	cancel it.
202		329
203	my $request = http_request GET => "http://www.nethype.de/", sub {	330	my $request = http_request GET => "http://www.nethype.de/", sub {
204	my ($body, $hdr) = @_;	331	my ($body, $hdr) = @_;
205	print "$body\n";	332	print "$body\n";
…		…
237	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	364	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238		365
239	_slot_schedule $_[0];	366	_slot_schedule $_[0];
240	}	367	}
241		368
242	our $qr_nl = qr<\015?\012>;	369	# continue to parse $_ for headers and place them into the arg
243	our $qr_nlnl = qr<\015?\012\015?\012>;	370	sub parse_hdr() {
		371	my %hdr;
		372
		373	# things seen, not parsed:
		374	# p3pP="NON CUR OTPi OUR NOR UNI"
		375
		376	$hdr{lc $1} .= ",$2"
		377	while /\G
		378	([^:\000-\037]*):
		379	[\011\040]*
		380	((?: [^\012]+ \| \012[\011\040] )*)
		381	\012
		382	/gxc;
		383
		384	/\G$/
		385	or return;
		386
		387	# remove the "," prefix we added to all headers above
		388	substr $_, 0, 1, ""
		389	for values %hdr;
		390
		391	\%hdr
		392	}
		393
		394	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		395
		396	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		397	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
244		398
245	sub http_request($$@) {	399	sub http_request($$@) {
246	my $cb = pop;	400	my $cb = pop;
247	my ($method, $url, %arg) = @_;	401	my ($method, $url, %arg) = @_;
248		402
249	my %hdr;	403	my %hdr;
		404
		405	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		406	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
250		407
251	$method = uc $method;	408	$method = uc $method;
252		409
253	if (my $hdr = $arg{headers}) {	410	if (my $hdr = $arg{headers}) {
254	while (my ($k, $v) = each %$hdr) {	411	while (my ($k, $v) = each %$hdr) {
255	$hdr{lc $k} = $v;	412	$hdr{lc $k} = $v;
256	}	413	}
257	}	414	}
258		415
		416	# pseudo headers for all subsequent responses
		417	my @pseudo = (URL => $url);
		418	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		419
259	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	420	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
260		421
261	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	422	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
262	if $recurse < 0;	423	if $recurse < 0;
263		424
264	my $proxy = $arg{proxy} \|\| $PROXY;	425	my $proxy = $arg{proxy} \|\| $PROXY;
265	my $timeout = $arg{timeout} \|\| $TIMEOUT;	426	my $timeout = $arg{timeout} \|\| $TIMEOUT;
266		427
267	$hdr{"user-agent"} \|\|= $USERAGENT;
268
269	my ($uscheme, $uauthority, $upath, $query, $fragment) =	428	my ($uscheme, $uauthority, $upath, $query, $fragment) =
270	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	429	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
271		430
272	$uscheme = lc $uscheme;	431	$uscheme = lc $uscheme;
273		432
274	my $uport = $uscheme eq "http" ? 80	433	my $uport = $uscheme eq "http" ? 80
275	: $uscheme eq "https" ? 443	434	: $uscheme eq "https" ? 443
276	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	435	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
277
278	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
279		436
280	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	437	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
281	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	438	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
282		439
283	my $uhost = $1;	440	my $uhost = $1;
284	$uport = $2 if defined $2;	441	$uport = $2 if defined $2;
285		442
		443	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		444	unless exists $hdr{host};
		445
286	$uhost =~ s/^\[(.*)\]$/$1/;	446	$uhost =~ s/^\[(.*)\]$/$1/;
287	$upath .= "?$query" if length $query;	447	$upath .= $query if length $query;
288		448
289	$upath =~ s%^/?%/%;	449	$upath =~ s%^/?%/%;
290		450
291	# cookie processing	451	# cookie processing
292	if (my $jar = $arg{cookie_jar}) {	452	if (my $jar = $arg{cookie_jar}) {
293	%$jar = () if $jar->{version} != 1;	453	%$jar = () if $jar->{version} != 1;
294		454
295	my @cookie;	455	my @cookie;
296		456
297	while (my ($chost, $v) = each %$jar) {	457	while (my ($chost, $paths) = each %$jar) {
298	if ($chost =~ /^\./) {	458	if ($chost =~ /^\./) {
299	next unless $chost eq substr $uhost, -length $chost;	459	next unless $chost eq substr $uhost, -length $chost;
300	} elsif ($chost =~ /\./) {	460	} elsif ($chost =~ /\./) {
301	next unless $chost eq $uhost;	461	next unless $chost eq $uhost;
302	} else {	462	} else {
303	next;	463	next;
304	}	464	}
305		465
306	while (my ($cpath, $v) = each %$v) {	466	while (my ($cpath, $cookies) = each %$paths) {
307	next unless $cpath eq substr $upath, 0, length $cpath;	467	next unless $cpath eq substr $upath, 0, length $cpath;
308		468
309	while (my ($k, $v) = each %$v) {	469	while (my ($cookie, $kv) = each %$cookies) {
310	next if $uscheme ne "https" && exists $v->{secure};	470	next if $uscheme ne "https" && exists $kv->{secure};
		471
		472	if (exists $kv->{expires}) {
		473	if (AE::now > parse_date ($kv->{expires})) {
		474	delete $cookies->{$cookie};
		475	next;
		476	}
		477	}
		478
311	my $value = $v->{value};	479	my $value = $kv->{value};
312	$value =~ s/([\\"])/\\$1/g;	480	$value =~ s/([\\"])/\\$1/g;
313	push @cookie, "$k=\"$value\"";	481	push @cookie, "$cookie=\"$value\"";
314	}	482	}
315	}	483	}
316	}	484	}
317		485
318	$hdr{cookie} = join "; ", @cookie	486	$hdr{cookie} = join "; ", @cookie
…		…
320	}	488	}
321		489
322	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	490	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
323		491
324	if ($proxy) {	492	if ($proxy) {
325	($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);	493	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		494
		495	$rscheme = "http" unless defined $rscheme;
326		496
327	# don't support https requests over https-proxy transport,	497	# don't support https requests over https-proxy transport,
328	# can't be done with tls as spec'ed.	498	# can't be done with tls as spec'ed, unless you double-encrypt.
329	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	499	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
330	} else {	500	} else {
331	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	501	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
332	}	502	}
333		503
334	$hdr{host} = $uhost;	504	# leave out fragment and query string, just a heuristic
		505	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		506	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		507
335	$hdr{"content-length"} = length $arg{body};	508	$hdr{"content-length"} = length $arg{body}
		509	if length $arg{body} \|\| $method ne "GET";
		510
		511	$hdr{connection} = "close TE"; #1.1
		512	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
336		513
337	my %state = (connect_guard => 1);	514	my %state = (connect_guard => 1);
338		515
339	_get_slot $uhost, sub {	516	_get_slot $uhost, sub {
340	$state{slot_guard} = shift;	517	$state{slot_guard} = shift;
341		518
342	return unless $state{connect_guard};	519	return unless $state{connect_guard};
343		520
344	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	521	my $connect_cb = sub {
345	$state{fh} = shift	522	$state{fh} = shift
		523	or do {
		524	my $err = "$!";
		525	%state = ();
346	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	526	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		527	};
		528
347	pop; # free memory, save a tree	529	pop; # free memory, save a tree
348		530
349	return unless delete $state{connect_guard};	531	return unless delete $state{connect_guard};
350		532
351	# get handle	533	# get handle
352	$state{handle} = new AnyEvent::Handle	534	$state{handle} = new AnyEvent::Handle
353	fh => $state{fh},	535	fh => $state{fh},
		536	peername => $rhost,
		537	tls_ctx => $arg{tls_ctx},
		538	# these need to be reconfigured on keepalive handles
354	timeout => $timeout;	539	timeout => $timeout,
		540	on_error => sub {
		541	%state = ();
		542	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		543	},
		544	on_eof => sub {
		545	%state = ();
		546	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		547	},
		548	;
355		549
356	# limit the number of persistent connections	550	# limit the number of persistent connections
357	# keepalive not yet supported	551	# keepalive not yet supported
358	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	552	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
359	++$KA_COUNT{$_[1]};	553	# ++$KA_COUNT{$_[1]};
360	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	554	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
361	--$KA_COUNT{$_[1]}	555	# --$KA_COUNT{$_[1]}
362	};	556	# };
363	$hdr{connection} = "keep-alive";	557	# $hdr{connection} = "keep-alive";
364	} else {
365	delete $hdr{connection};
366	}	558	# }
367
368	# (re-)configure handle
369	$state{handle}->on_error (sub {
370	my $errno = "$!";
371	%state = ();
372	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });
373	});
374	$state{handle}->on_eof (sub {
375	%state = ();
376	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
377	});
378		559
379	$state{handle}->starttls ("connect") if $rscheme eq "https";	560	$state{handle}->starttls ("connect") if $rscheme eq "https";
380		561
381	# handle actual, non-tunneled, request	562	# handle actual, non-tunneled, request
382	my $handle_actual_request = sub {	563	my $handle_actual_request = sub {
383	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	564	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
384		565
385	# send request	566	# send request
386	$state{handle}->push_write (	567	$state{handle}->push_write (
387	"$method $rpath HTTP/1.0\015\012"	568	"$method $rpath HTTP/1.1\015\012"
388	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	569	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
389	. "\015\012"	570	. "\015\012"
390	. (delete $arg{body})	571	. (delete $arg{body})
391	);	572	);
392		573
		574	# return if error occured during push_write()
		575	return unless %state;
		576
393	%hdr = (); # reduce memory usage, save a kitten	577	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
394		578
395	# status line	579	# status line and headers
396	$state{handle}->push_read (line => $qr_nl, sub {	580	$state{read_response} = sub {
397	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
398	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
399
400	my %hdr = ( # response headers
401	HTTPVersion => ",$1",
402	Status => ",$2",
403	Reason => ",$3",
404	URL => ",$url"
405	);
406
407	# headers, could be optimized a bit
408	$state{handle}->unshift_read (line => $qr_nlnl, sub {
409	for ("$_[1]\012") {	581	for ("$_[1]") {
410	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	582	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411		583
412	# we support spaces in field names, as lotus domino	584	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
413	# creates them (actually spaces around seperators	585	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
414	# are strictly allowed in http, they are a security issue).
415	$hdr{lc $1} .= ",$2"
416	while /\G
417	([^:\000-\037]+):
418	[\011\040]*
419	((?: [^\012]+ \| \012[\011\040] )*)
420	\012
421	/gxc;
422		586
		587	# 100 Continue handling
		588	# should not happen as we don't send expect: 100-continue,
		589	# but we handle it just in case.
		590	# since we send the request body regardless, if we get an error
		591	# we are out of-sync, which we currently do NOT handle correctly.
		592	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		593	if $2 eq 100;
		594
		595	push @pseudo,
		596	HTTPVersion => $1,
		597	Status => $2,
		598	Reason => $3,
423	/\G$/	599	;
		600
		601	my $hdr = parse_hdr
424	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));	602	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		603
		604	%hdr = (%$hdr, @pseudo);
		605	}
		606
		607	# redirect handling
		608	# microsoft and other shitheads don't give a shit for following standards,
		609	# try to support some common forms of broken Location headers.
		610	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		611	$hdr{location} =~ s/^\.\/+//;
		612
		613	my $url = "$rscheme://$uhost:$uport";
		614
		615	unless ($hdr{location} =~ s/^\///) {
		616	$url .= $upath;
		617	$url =~ s/\/[^\/]*$//;
425	}	618	}
426		619
427	substr $_, 0, 1, ""	620	$hdr{location} = "$url/$hdr{location}";
428	for values %hdr;	621	}
429		622
430	my $finish = sub {	623	my $redirect;
		624
		625	if ($recurse) {
		626	my $status = $hdr{Status};
		627
		628	# industry standard is to redirect POST as GET for
		629	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		630	# also, the UA should ask the user for 301 and 307 and POST,
		631	# industry standard seems to be to simply follow.
		632	# we go with the industry standard.
		633	if ($status == 301 or $status == 302 or $status == 303) {
		634	# HTTP/1.1 is unclear on how to mutate the method
		635	$method = "GET" unless $method eq "HEAD";
		636	$redirect = 1;
		637	} elsif ($status == 307) {
		638	$redirect = 1;
		639	}
		640	}
		641
		642	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		643	my $keepalive = pop;
		644
431	$state{handle}->destroy;	645	$state{handle}->destroy if $state{handle};
432	%state = ();	646	%state = ();
433		647
		648	if (defined $_[1]) {
		649	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		650	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		651	}
		652
434	# set-cookie processing	653	# set-cookie processing
435	if ($arg{cookie_jar}) {	654	if ($arg{cookie_jar}) {
436	for ($hdr{"set-cookie"}) {	655	for ($hdr{"set-cookie"}) {
437	# parse NAME=VALUE	656	# parse NAME=VALUE
438	my @kv;	657	my @kv;
439		658
		659	while (
		660	m{
		661	\G\s*
		662	(?:
		663	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
440	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {	664	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		665	)
		666	}gcxsi
		667	) {
441	my $name = $1;	668	my $name = $2;
		669	my $value = $4;
		670
		671	unless (defined $name) {
		672	# expires
		673	$name = "expires";
		674	$value = $1;
		675	} elsif (!defined $value) {
		676	# quoted
442	my $value = $3;	677	$value = $3;
443
444	unless ($value) {
445	$value = $2;
446	$value =~ s/\\(.)/$1/gs;	678	$value =~ s/\\(.)/$1/gs;
		679	}
		680
		681	push @kv, lc $name, $value;
		682
		683	last unless /\G\s*;/gc;
		684	}
		685
		686	last unless @kv;
		687
		688	my $name = shift @kv;
		689	my %kv = (value => shift @kv, @kv);
		690
		691	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		692	if exists $kv{"max-age"};
		693
		694	my $cdom;
		695	my $cpath = (delete $kv{path}) \|\| "/";
		696
		697	if (exists $kv{domain}) {
		698	$cdom = delete $kv{domain};
		699
		700	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		701
		702	next if $cdom =~ /\.$/;
		703
		704	# this is not rfc-like and not netscape-like. go figure.
		705	my $ndots = $cdom =~ y/.//;
		706	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		707	} else {
		708	$cdom = $uhost;
		709	}
		710
		711	# store it
		712	$arg{cookie_jar}{version} = 1;
		713	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		714
		715	redo if /\G\s*,/gc;
		716	}
		717	}
		718
		719	if ($redirect && exists $hdr{location}) {
		720	# we ignore any errors, as it is very common to receive
		721	# Content-Length != 0 but no actual body
		722	# we also access %hdr, as $_[1] might be an erro
		723	http_request (
		724	$method => $hdr{location},
		725	%arg,
		726	recurse => $recurse - 1,
		727	Redirect => [$_[0], \%hdr],
		728	$cb);
		729	} else {
		730	$cb->($_[0], \%hdr);
		731	}
		732	};
		733
		734	my $len = $hdr{"content-length"};
		735
		736	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		737	$finish->(undef, 598 => "Request cancelled by on_header");
		738	} elsif (
		739	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		740	or $method eq "HEAD"
		741	or (defined $len && !$len)
		742	) {
		743	# no body
		744	$finish->("", undef, undef, 1);
		745	} else {
		746	# body handling, many different code paths
		747	# - no body expected
		748	# - want_body_handle
		749	# - te chunked
		750	# - 2x length known (with or without on_body)
		751	# - 2x length not known (with or without on_body)
		752	if (!$redirect && $arg{want_body_handle}) {
		753	$_[0]->on_eof (undef);
		754	$_[0]->on_error (undef);
		755	$_[0]->on_read (undef);
		756
		757	$finish->(delete $state{handle});
		758
		759	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		760	my $cl = 0;
		761	my $body = undef;
		762	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		763
		764	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		765
		766	my $read_chunk; $read_chunk = sub {
		767	$_[1] =~ /^([0-9a-fA-F]+)/
		768	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		769
		770	my $len = hex $1;
		771
		772	if ($len) {
		773	$cl += $len;
		774
		775	$_[0]->push_read (chunk => $len, sub {
		776	$on_body->($_[1], \%hdr)
		777	or return $finish->(undef, 598 => "Request cancelled by on_body");
		778
		779	$_[0]->push_read (line => sub {
		780	length $_[1]
		781	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		782	$_[0]->push_read (line => $read_chunk);
		783	});
		784	});
		785	} else {
		786	$hdr{"content-length"} \|\|= $cl;
		787
		788	$_[0]->push_read (line => $qr_nlnl, sub {
		789	if (length $_[1]) {
		790	for ("$_[1]") {
		791	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		792
		793	my $hdr = parse_hdr
		794	or return $finish->(undef, 599 => "Garbled response trailers");
		795
		796	%hdr = (%hdr, %$hdr);
		797	}
447	}	798	}
448		799
449	push @kv, $name => $value;	800	$finish->($body, undef, undef, 1);
450
451	last unless /\G\s*;/gc;
452	}	801	});
453
454	last unless @kv;
455
456	my $name = shift @kv;
457	my %kv = (value => shift @kv, @kv);
458
459	my $cdom;
460	my $cpath = (delete $kv{path}) \|\| "/";
461
462	if (exists $kv{domain}) {
463	$cdom = delete $kv{domain};
464
465	$cdom =~ s/^\.?/./; # make sure it starts with a "."
466
467	next if $cdom =~ /\.$/;
468
469	# this is not rfc-like and not netscape-like. go figure.
470	my $ndots = $cdom =~ y/.//;
471	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
472	} else {
473	$cdom = $uhost;
474	}
475
476	# store it
477	$arg{cookie_jar}{version} = 1;
478	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
479
480	redo if /\G\s*,/gc;
481	}	802	}
482	}	803	};
483		804
484	# microsoft and other shitheads don't give a shit for following standards,	805	$_[0]->push_read (line => $read_chunk);
485	# try to support some common forms of broken Location headers.
486	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
487	$_[1]{location} =~ s/^\.\/+//;
488		806
489	my $url = "$rscheme://$uhost:$uport";	807	} elsif ($arg{on_body}) {
		808	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
490		809
491	unless ($_[1]{location} =~ s/^\///) {
492	$url .= $upath;
493	$url =~ s/\/[^\/]*$//;
494	}
495
496	$_[1]{location} = "$url/$_[1]{location}";
497	}
498
499	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
500	# apparently, mozilla et al. just change POST to GET here
501	# more research is needed before we do the same
502	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
503	} elsif ($_[1]{Status} == 303 && $recurse) {
504	# even http/1.1 is unclear on how to mutate the method
505	$method = "GET" unless $method eq "HEAD";
506	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
507	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
508	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
509	} else {	810	if ($len) {
510	$cb->($_[0], $_[1]);	811	$_[0]->on_read (sub {
511	}	812	$len -= length $_[0]{rbuf};
512	};
513		813
514	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	814	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
515	$finish->(undef, \%hdr);	815	or return $finish->(undef, 598 => "Request cancelled by on_body");
516	} else {	816
517	if (exists $hdr{"content-length"}) {
518	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
519	# could cache persistent connection now
520	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
521	# but we don't, due to misdesigns, this is annoyingly complex
522	};	817	$len > 0
523		818	or $finish->("", undef, undef, 1);
524	$finish->($_[1], \%hdr);
525	});	819	});
526	} else {	820	} else {
527	# too bad, need to read until we get an error or EOF,	821	$_[0]->on_eof (sub {
528	# no way to detect winged data.	822	$finish->("");
		823	});
		824	$_[0]->on_read (sub {
		825	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		826	or $finish->(undef, 598 => "Request cancelled by on_body");
		827	});
		828	}
		829	} else {
		830	$_[0]->on_eof (undef);
		831
		832	if ($len) {
		833	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		834	$_[0]->on_read (sub {
		835	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		836	if $len <= length $_[0]{rbuf};
		837	});
		838	} else {
529	$_[0]->on_error (sub {	839	$_[0]->on_error (sub {
		840	($! == Errno::EPIPE \|\| !$!)
530	$finish->($_[0]{rbuf}, \%hdr);	841	? $finish->(delete $_[0]{rbuf})
		842	: $finish->(undef, 599 => $_[2]);
531	});	843	});
532	$_[0]->on_eof (undef);
533	$_[0]->on_read (sub { });	844	$_[0]->on_read (sub { });
534	}	845	}
535	}	846	}
536	});	847	}
537	});	848	};
		849
		850	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
538	};	851	};
539		852
540	# now handle proxy-CONNECT method	853	# now handle proxy-CONNECT method
541	if ($proxy && $uscheme eq "https") {	854	if ($proxy && $uscheme eq "https") {
542	# oh dear, we have to wrap it into a connect request	855	# oh dear, we have to wrap it into a connect request
543		856
544	# maybe re-use $uauthority with patched port?	857	# maybe re-use $uauthority with patched port?
545	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	858	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
546	$state{handle}->push_read (line => $qr_nlnl, sub {	859	$state{handle}->push_read (line => $qr_nlnl, sub {
547	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	860	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
548	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));	861	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
549		862
550	if ($2 == 200) {	863	if ($2 == 200) {
551	$rpath = $upath;	864	$rpath = $upath;
552	&$handle_actual_request;	865	&$handle_actual_request;
553	} else {	866	} else {
554	%state = ();	867	%state = ();
555	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	868	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
556	}	869	}
557	});	870	});
558	} else {	871	} else {
559	&$handle_actual_request;	872	&$handle_actual_request;
560	}	873	}
561
562	}, sub {
563	$timeout
564	};	874	};
		875
		876	my $tcp_connect = $arg{tcp_connect}
		877	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		878
		879	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		880
565	};	881	};
566		882
567	defined wantarray && AnyEvent::Util::guard { %state = () }	883	defined wantarray && AnyEvent::Util::guard { %state = () }
568	}	884	}
569		885
…		…
583	&http_request	899	&http_request
584	}	900	}
585		901
586	=back	902	=back
587		903
		904	=head2 DNS CACHING
		905
		906	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		907	the actual connection, which in turn uses AnyEvent::DNS to resolve
		908	hostnames. The latter is a simple stub resolver and does no caching
		909	on its own. If you want DNS caching, you currently have to provide
		910	your own default resolver (by storing a suitable resolver object in
		911	C<$AnyEvent::DNS::RESOLVER>).
		912
588	=head2 GLOBAL FUNCTIONS AND VARIABLES	913	=head2 GLOBAL FUNCTIONS AND VARIABLES
589		914
590	=over 4	915	=over 4
591		916
592	=item AnyEvent::HTTP::set_proxy "proxy-url"	917	=item AnyEvent::HTTP::set_proxy "proxy-url"
593		918
594	Sets the default proxy server to use. The proxy-url must begin with a	919	Sets the default proxy server to use. The proxy-url must begin with a
595	string of the form C<http://host:port> (optionally C<https:...>).	920	string of the form C<http://host:port> (optionally C<https:...>), croaks
		921	otherwise.
		922
		923	To clear an already-set proxy, use C<undef>.
		924
		925	=item $date = AnyEvent::HTTP::format_date $timestamp
		926
		927	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		928	Date (RFC 2616).
		929
		930	=item $timestamp = AnyEvent::HTTP::parse_date $date
		931
		932	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
		933	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		934	be parsed.
596		935
597	=item $AnyEvent::HTTP::MAX_RECURSE	936	=item $AnyEvent::HTTP::MAX_RECURSE
598		937
599	The default value for the C<recurse> request parameter (default: C<10>).	938	The default value for the C<recurse> request parameter (default: C<10>).
600		939
601	=item $AnyEvent::HTTP::USERAGENT	940	=item $AnyEvent::HTTP::USERAGENT
602		941
603	The default value for the C<User-Agent> header (the default is	942	The default value for the C<User-Agent> header (the default is
604	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	943	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
605		944
606	=item $AnyEvent::HTTP::MAX_PERSISTENT	945	=item $AnyEvent::HTTP::MAX_PER_HOST
607		946
608	The maximum number of persistent connections to keep open (default: 8).	947	The maximum number of concurrent connections to the same host (identified
		948	by the hostname). If the limit is exceeded, then the additional requests
		949	are queued until previous connections are closed.
609		950
610	Not implemented currently.	951	The default value for this is C<4>, and it is highly advisable to not
611		952	increase it.
612	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
613
614	The maximum time to cache a persistent connection, in seconds (default: 2).
615
616	Not implemented currently.
617		953
618	=item $AnyEvent::HTTP::ACTIVE	954	=item $AnyEvent::HTTP::ACTIVE
619		955
620	The number of active connections. This is not the number of currently	956	The number of active connections. This is not the number of currently
621	running requests, but the number of currently open and non-idle TCP	957	running requests, but the number of currently open and non-idle TCP
…		…
623		959
624	=back	960	=back
625		961
626	=cut	962	=cut
627		963
		964	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		965	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		966
		967	sub format_date($) {
		968	my ($time) = @_;
		969
		970	# RFC 822/1123 format
		971	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		972
		973	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		974	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		975	$H, $M, $S;
		976	}
		977
		978	sub parse_date($) {
		979	my ($date) = @_;
		980
		981	my ($d, $m, $y, $H, $M, $S);
		982
		983	if ($date =~ /^[A-Z][a-z][a-z], ([0-9][0-9])[\- ]([A-Z][a-z][a-z])[\- ]([0-9][0-9][0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) {
		984	# RFC 822/1123, required by RFC 2616 (with " ")
		985	# cookie dates (with "-")
		986
		987	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		988
		989	} elsif ($date =~ /^[A-Z][a-z]+, ([0-9][0-9])-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) {
		990	# RFC 850
		991	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		992
		993	} elsif ($date =~ /^[A-Z][a-z][a-z] ([A-Z][a-z][a-z]) ([0-9 ][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) ([0-9][0-9][0-9][0-9])$/) {
		994	# ISO C's asctime
		995	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		996	}
		997	# other formats fail in the loop below
		998
		999	for (0..11) {
		1000	if ($m eq $month[$_]) {
		1001	require Time::Local;
		1002	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1003	}
		1004	}
		1005
		1006	undef
		1007	}
		1008
628	sub set_proxy($) {	1009	sub set_proxy($) {
		1010	if (length $_[0]) {
629	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1011	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1012	or Carp::croak "$_[0]: invalid proxy URL";
		1013	$PROXY = [$2, $3 \|\| 3128, $1]
		1014	} else {
		1015	undef $PROXY;
		1016	}
630	}	1017	}
631		1018
632	# initialise proxy from environment	1019	# initialise proxy from environment
		1020	eval {
633	set_proxy $ENV{http_proxy};	1021	set_proxy $ENV{http_proxy};
		1022	};
		1023
		1024	=head2 SOCKS PROXIES
		1025
		1026	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1027	compile your perl to support socks, or use an external program such as
		1028	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1029	transparently.
		1030
		1031	Alternatively, for AnyEvent::HTTP only, you can use your own
		1032	C<tcp_connect> function that does the proxy handshake - here is an example
		1033	that works with socks4a proxies:
		1034
		1035	use Errno;
		1036	use AnyEvent::Util;
		1037	use AnyEvent::Socket;
		1038	use AnyEvent::Handle;
		1039
		1040	# host, port and username of/for your socks4a proxy
		1041	my $socks_host = "10.0.0.23";
		1042	my $socks_port = 9050;
		1043	my $socks_user = "";
		1044
		1045	sub socks4a_connect {
		1046	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1047
		1048	my $hdl = new AnyEvent::Handle
		1049	connect => [$socks_host, $socks_port],
		1050	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1051	on_error => sub { $connect_cb->() },
		1052	;
		1053
		1054	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1055
		1056	$hdl->push_read (chunk => 8, sub {
		1057	my ($hdl, $chunk) = @_;
		1058	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1059
		1060	if ($status == 0x5a) {
		1061	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1062	} else {
		1063	$! = Errno::ENXIO; $connect_cb->();
		1064	}
		1065	});
		1066
		1067	$hdl
		1068	}
		1069
		1070	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1071	possibly after switching off other proxy types:
		1072
		1073	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1074
		1075	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1076	my ($data, $headers) = @_;
		1077	...
		1078	};
634		1079
635	=head1 SEE ALSO	1080	=head1 SEE ALSO
636		1081
637	L<AnyEvent>.	1082	L<AnyEvent>.
638		1083
639	=head1 AUTHOR	1084	=head1 AUTHOR
640		1085
641	Marc Lehmann <schmorp@schmorp.de>	1086	Marc Lehmann <schmorp@schmorp.de>
642	http://home.schmorp.de/	1087	http://home.schmorp.de/
643		1088
		1089	With many thanks to Дмитрий Шалашов, who provided countless
		1090	testcases and bugreports.
		1091
644	=cut	1092	=cut
645		1093
646	1	1094	1
647		1095

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.35 by root, Thu Oct 30 03:47:01 2008 UTC vs. Revision 1.70 by root, Fri Dec 31 20:31:47 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.35 by root, Thu Oct 30 03:47:01 2008 UTC vs.
Revision 1.70 by root, Fri Dec 31 20:31:47 2010 UTC