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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.43 by root, Mon Jul 6 03:03:12 2009 UTC vs.
Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC

…		…
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 4.452 ();	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 = '1.12';	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 $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$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;
…		…
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 body data as first argument	98	The callback will be called with the response body data as first argument
100	(or C<undef> if an error occured), and a hash-ref with response headers as	99	(or C<undef> if an error occured), and a hash-ref with response headers
101	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<< $headers->{Status} >> will be C<59x>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
114	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
115	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
116		144
117	A typical callback might look like this:	145	A typical callback might look like this:
118		146
119	sub {	147	sub {
120	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
136	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
137	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
138		166
139	=item headers => hashref	167	=item headers => hashref
140		168
141	The request headers to use. Currently, C<http_request> may provide its	169	The request headers to use. Currently, C<http_request> may provide its own
142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
143	and will provide defaults for C<User-Agent:> and C<Referer:>.	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		172	(this can be suppressed by using C<undef> for these headers in which case
		173	they won't be sent at all).
144		174
145	=item timeout => $seconds	175	=item timeout => $seconds
146		176
147	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
148	the timeout, as will read or write activity. Default timeout is 5 minutes.	178	the timeout, as will read or write activity, i.e. this is not an overall
		179	timeout.
		180
		181	Default timeout is 5 minutes.
149		182
150	=item proxy => [$host, $port[, $scheme]] or undef	183	=item proxy => [$host, $port[, $scheme]] or undef
151		184
152	Use the given http proxy for all requests. If not specified, then the	185	Use the given http proxy for all requests. If not specified, then the
153	default proxy (as specified by C<$ENV{http_proxy}>) is used.	186	default proxy (as specified by C<$ENV{http_proxy}>) is used.
154		187
155	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
156	HTTPS.	189	HTTPS.
157		190
158	=item body => $string	191	=item body => $string
159		192
160	The request body, usually empty. Will be-sent as-is (future versions of	193	The request body, usually empty. Will be sent as-is (future versions of
161	this module might offer more options).	194	this module might offer more options).
162		195
163	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
164		197
165	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
166	based on the original netscape specification.	199	based on the original netscape specification.
167		200
168	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which will
169	get updated automatically. It is possible to save the cookie_jar to	202	get updated automatically. It is possible to save the cookie jar to
170	persistent storage with something like JSON or Storable, but this is not	203	persistent storage with something like JSON or Storable, but this is not
171	recommended, as expiry times are currently being ignored.	204	recommended, as session-only cookies might survive longer than expected.
172		205
173	Note that this cookie implementation is not of very high quality, nor	206	Note that this cookie implementation is not meant to be complete. If
174	meant to be complete. If you want complete cookie management you have to	207	you want complete cookie management you have to do that on your
175	do that on your own. C<cookie_jar> is meant as a quick fix to get some	208	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
176	cookie-using sites working. Cookies are a privacy disaster, do not use	209	working. Cookies are a privacy disaster, do not use them unless required
177	them unless required to.	210	to.
		211
		212	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		213	headers will be set and handled by this module, otherwise they will be
		214	left untouched.
178		215
179	=item tls_ctx => $scheme \| $tls_ctx	216	=item tls_ctx => $scheme \| $tls_ctx
180		217
181	Specifies the AnyEvent::TLS context to be used for https connections. This	218	Specifies the AnyEvent::TLS context to be used for https connections. This
182	parameter follows the same rules as the C<tls_ctx> parameter to	219	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
186	verification) TLS context.	223	verification) TLS context.
187		224
188	The default for this option is C<low>, which could be interpreted as "give	225	The default for this option is C<low>, which could be interpreted as "give
189	me the page, no matter what".	226	me the page, no matter what".
190		227
		228	=item on_prepare => $callback->($fh)
		229
		230	In rare cases you need to "tune" the socket before it is used to
		231	connect (for exmaple, to bind it on a given IP address). This parameter
		232	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		233	and behaves exactly the same way (e.g. it has to provide a
		234	timeout). See the description for the C<$prepare_cb> argument of
		235	C<AnyEvent::Socket::tcp_connect> for details.
		236
		237	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		238
		239	In even rarer cases you want total control over how AnyEvent::HTTP
		240	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		241	to do this, but you can provide your own C<tcp_connect> function -
		242	obviously, it has to follow the same calling conventions, except that it
		243	may always return a connection guard object.
		244
		245	There are probably lots of weird uses for this function, starting from
		246	tracing the hosts C<http_request> actually tries to connect, to (inexact
		247	but fast) host => IP address caching or even socks protocol support.
		248
191	=item on_header => $callback->($headers)	249	=item on_header => $callback->($headers)
192		250
193	When specified, this callback will be called with the header hash as soon	251	When specified, this callback will be called with the header hash as soon
194	as headers have been successfully received from the remote server (not on	252	as headers have been successfully received from the remote server (not on
195	locally-generated errors).	253	locally-generated errors).
…		…
200		258
201	This callback is useful, among other things, to quickly reject unwanted	259	This callback is useful, among other things, to quickly reject unwanted
202	content, which, if it is supposed to be rare, can be faster than first	260	content, which, if it is supposed to be rare, can be faster than first
203	doing a C<HEAD> request.	261	doing a C<HEAD> request.
204		262
		263	The downside is that cancelling the request makes it impossible to re-use
		264	the connection. Also, the C<on_header> callback will not receive any
		265	trailer (headers sent after the response body).
		266
205	Example: cancel the request unless the content-type is "text/html".	267	Example: cancel the request unless the content-type is "text/html".
206		268
207	on_header => sub {	269	on_header => sub {
208	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	270	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
209	},	271	},
…		…
216		278
217	It has to return either true (in which case AnyEvent::HTTP will continue),	279	It has to return either true (in which case AnyEvent::HTTP will continue),
218	or false, in which case AnyEvent::HTTP will cancel the download (and call	280	or false, in which case AnyEvent::HTTP will cancel the download (and call
219	the completion callback with an error code of C<598>).	281	the completion callback with an error code of C<598>).
220		282
		283	The downside to cancelling the request is that it makes it impossible to
		284	re-use the connection.
		285
221	This callback is useful when the data is too large to be held in memory	286	This callback is useful when the data is too large to be held in memory
222	(so the callback writes it to a file) or when only some information should	287	(so the callback writes it to a file) or when only some information should
223	be extracted, or when the body should be processed incrementally.	288	be extracted, or when the body should be processed incrementally.
224		289
225	It is usually preferred over doing your own body handling via	290	It is usually preferred over doing your own body handling via
226	C<want_body_handle>.	291	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		292	only used to create a connection, C<want_body_handle> is the better
		293	alternative, as it allows you to install your own event handler, reducing
		294	resource usage.
227		295
228	=item want_body_handle => $enable	296	=item want_body_handle => $enable
229		297
230	When enabled (default is disabled), the behaviour of AnyEvent::HTTP	298	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
231	changes considerably: after parsing the headers, and instead of	299	changes considerably: after parsing the headers, and instead of
…		…
243	This is useful with some push-type services, where, after the initial	311	This is useful with some push-type services, where, after the initial
244	headers, an interactive protocol is used (typical example would be the	312	headers, an interactive protocol is used (typical example would be the
245	push-style twitter API which starts a JSON/XML stream).	313	push-style twitter API which starts a JSON/XML stream).
246		314
247	If you think you need this, first have a look at C<on_body>, to see if	315	If you think you need this, first have a look at C<on_body>, to see if
248	that doesn'T solve your problem in a better way.	316	that doesn't solve your problem in a better way.
249		317
250	=back	318	=back
251		319
252	Example: make a simple HTTP GET request for http://www.nethype.de/	320	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		321	the response body.
253		322
254	http_request GET => "http://www.nethype.de/", sub {	323	http_request GET => "http://www.nethype.de/", sub {
255	my ($body, $hdr) = @_;	324	my ($body, $hdr) = @_;
256	print "$body\n";	325	print "$body\n";
257	};	326	};
258		327
259	Example: make a HTTP HEAD request on https://www.google.com/, use a	328	Example: do a HTTP HEAD request on https://www.google.com/, use a
260	timeout of 30 seconds.	329	timeout of 30 seconds.
261		330
262	http_request	331	http_request
263	GET => "https://www.google.com",	332	GET => "https://www.google.com",
264	timeout => 30,	333	timeout => 30,
…		…
267	use Data::Dumper;	336	use Data::Dumper;
268	print Dumper $hdr;	337	print Dumper $hdr;
269	}	338	}
270	;	339	;
271		340
272	Example: make another simple HTTP GET request, but immediately try to	341	Example: do another simple HTTP GET request, but immediately try to
273	cancel it.	342	cancel it.
274		343
275	my $request = http_request GET => "http://www.nethype.de/", sub {	344	my $request = http_request GET => "http://www.nethype.de/", sub {
276	my ($body, $hdr) = @_;	345	my ($body, $hdr) = @_;
277	print "$body\n";	346	print "$body\n";
…		…
309	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	378	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
310		379
311	_slot_schedule $_[0];	380	_slot_schedule $_[0];
312	}	381	}
313		382
314	our $qr_nl = qr<\015?\012>;	383	# extract cookies from jar
315	our $qr_nlnl = qr<\015?\012\015?\012>;	384	sub cookie_jar_extract($$$$) {
		385	my ($jar, $uscheme, $uhost, $upath) = @_;
		386
		387	%$jar = () if $jar->{version} != 1;
		388
		389	my @cookies;
		390
		391	while (my ($chost, $paths) = each %$jar) {
		392	next unless ref $paths;
		393
		394	if ($chost =~ /^\./) {
		395	next unless $chost eq substr $uhost, -length $chost;
		396	} elsif ($chost =~ /\./) {
		397	next unless $chost eq $uhost;
		398	} else {
		399	next;
		400	}
		401
		402	while (my ($cpath, $cookies) = each %$paths) {
		403	next unless $cpath eq substr $upath, 0, length $cpath;
		404
		405	while (my ($cookie, $kv) = each %$cookies) {
		406	next if $uscheme ne "https" && exists $kv->{secure};
		407
		408	if (exists $kv->{expires}) {
		409	if (AE::now > parse_date ($kv->{expires})) {
		410	delete $cookies->{$cookie};
		411	next;
		412	}
		413	}
		414
		415	my $value = $kv->{value};
		416
		417	if ($value =~ /[=;,[:space:]]/) {
		418	$value =~ s/([\\"])/\\$1/g;
		419	$value = "\"$value\"";
		420	}
		421
		422	push @cookies, "$cookie=$value";
		423	}
		424	}
		425	}
		426
		427	\@cookies
		428	}
		429
		430	# parse set_cookie header into jar
		431	sub cookie_jar_set_cookie($$$) {
		432	my ($jar, $set_cookie, $uhost) = @_;
		433
		434	for ($set_cookie) {
		435	# parse NAME=VALUE
		436	my @kv;
		437
		438	# expires is not http-compliant in the original cookie-spec,
		439	# we support the official date format and some extensions
		440	while (
		441	m{
		442	\G\s*
		443	(?:
		444	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		445	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		446	)
		447	}gcxsi
		448	) {
		449	my $name = $2;
		450	my $value = $4;
		451
		452	unless (defined $name) {
		453	# expires
		454	$name = "expires";
		455	$value = $1;
		456	} elsif (!defined $value) {
		457	# quoted
		458	$value = $3;
		459	$value =~ s/\\(.)/$1/gs;
		460	}
		461
		462	push @kv, lc $name, $value;
		463
		464	last unless /\G\s*;/gc;
		465	}
		466
		467	last unless @kv;
		468
		469	my $name = shift @kv;
		470	my %kv = (value => shift @kv, @kv);
		471
		472	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		473	if exists $kv{"max-age"};
		474
		475	my $cdom;
		476	my $cpath = (delete $kv{path}) \|\| "/";
		477
		478	if (exists $kv{domain}) {
		479	$cdom = delete $kv{domain};
		480
		481	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		482
		483	next if $cdom =~ /\.$/;
		484
		485	# this is not rfc-like and not netscape-like. go figure.
		486	my $ndots = $cdom =~ y/.//;
		487	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		488	} else {
		489	$cdom = $uhost;
		490	}
		491
		492	# store it
		493	$jar->{version} = 1;
		494	$jar->{$cdom}{$cpath}{$name} = \%kv;
		495
		496	redo if /\G\s*,/gc;
		497	}
		498	}
		499
		500	# continue to parse $_ for headers and place them into the arg
		501	sub parse_hdr() {
		502	my %hdr;
		503
		504	# things seen, not parsed:
		505	# p3pP="NON CUR OTPi OUR NOR UNI"
		506
		507	$hdr{lc $1} .= ",$2"
		508	while /\G
		509	([^:\000-\037]*):
		510	[\011\040]*
		511	((?: [^\012]+ \| \012[\011\040] )*)
		512	\012
		513	/gxc;
		514
		515	/\G$/
		516	or return;
		517
		518	# remove the "," prefix we added to all headers above
		519	substr $_, 0, 1, ""
		520	for values %hdr;
		521
		522	\%hdr
		523	}
		524
		525	our $qr_nlnl = qr{(?<![^\012])\015?\012};
316		526
317	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	527	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
318	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	528	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
319		529
320	sub http_request($$@) {	530	sub http_request($$@) {
…		…
332	while (my ($k, $v) = each %$hdr) {	542	while (my ($k, $v) = each %$hdr) {
333	$hdr{lc $k} = $v;	543	$hdr{lc $k} = $v;
334	}	544	}
335	}	545	}
336		546
		547	# pseudo headers for all subsequent responses
		548	my @pseudo = (URL => $url);
		549	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		550
337	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	551	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
338		552
339	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	553	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
340	if $recurse < 0;	554	if $recurse < 0;
341		555
342	my $proxy = $arg{proxy} \|\| $PROXY;	556	my $proxy = $arg{proxy} \|\| $PROXY;
343	my $timeout = $arg{timeout} \|\| $TIMEOUT;	557	my $timeout = $arg{timeout} \|\| $TIMEOUT;
344		558
345	my ($uscheme, $uauthority, $upath, $query, $fragment) =	559	my ($uscheme, $uauthority, $upath, $query, $fragment) =
346	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	560	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
347		561
348	$uscheme = lc $uscheme;	562	$uscheme = lc $uscheme;
349		563
350	my $uport = $uscheme eq "http" ? 80	564	my $uport = $uscheme eq "http" ? 80
351	: $uscheme eq "https" ? 443	565	: $uscheme eq "https" ? 443
352	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });	566	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
353		567
354	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	568	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
355	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	569	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
356		570
357	my $uhost = $1;	571	my $uhost = $1;
358	$uport = $2 if defined $2;	572	$uport = $2 if defined $2;
359		573
360	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";	574	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		575	unless exists $hdr{host};
361		576
362	$uhost =~ s/^\[(.*)\]$/$1/;	577	$uhost =~ s/^\[(.*)\]$/$1/;
363	$upath .= "?$query" if length $query;	578	$upath .= $query if length $query;
364		579
365	$upath =~ s%^/?%/%;	580	$upath =~ s%^/?%/%;
366		581
367	# cookie processing	582	# cookie processing
368	if (my $jar = $arg{cookie_jar}) {	583	if (my $jar = $arg{cookie_jar}) {
369	%$jar = () if $jar->{version} != 1;	584	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
370		585
371	my @cookie;
372
373	while (my ($chost, $v) = each %$jar) {
374	if ($chost =~ /^\./) {
375	next unless $chost eq substr $uhost, -length $chost;
376	} elsif ($chost =~ /\./) {
377	next unless $chost eq $uhost;
378	} else {
379	next;
380	}
381
382	while (my ($cpath, $v) = each %$v) {
383	next unless $cpath eq substr $upath, 0, length $cpath;
384
385	while (my ($k, $v) = each %$v) {
386	next if $uscheme ne "https" && exists $v->{secure};
387	my $value = $v->{value};
388	$value =~ s/([\\"])/\\$1/g;
389	push @cookie, "$k=\"$value\"";
390	}
391	}
392	}
393
394	$hdr{cookie} = join "; ", @cookie	586	$hdr{cookie} = join "; ", @$cookies
395	if @cookie;	587	if @$cookies;
396	}	588	}
397		589
398	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	590	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
399		591
400	if ($proxy) {	592	if ($proxy) {
401	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	593	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		594
		595	$rscheme = "http" unless defined $rscheme;
402		596
403	# don't support https requests over https-proxy transport,	597	# don't support https requests over https-proxy transport,
404	# can't be done with tls as spec'ed, unless you double-encrypt.	598	# can't be done with tls as spec'ed, unless you double-encrypt.
405	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	599	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
406	} else {	600	} else {
407	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	601	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
408	}	602	}
409		603
410	$hdr{"user-agent"} \|\|= $USERAGENT;	604	# leave out fragment and query string, just a heuristic
411	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic	605	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		606	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
412		607
413	$hdr{"content-length"} = length $arg{body};	608	$hdr{"content-length"} = length $arg{body}
		609	if length $arg{body} \|\| $method ne "GET";
		610
		611	$hdr{connection} = "close TE"; #1.1
		612	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
414		613
415	my %state = (connect_guard => 1);	614	my %state = (connect_guard => 1);
416		615
417	_get_slot $uhost, sub {	616	_get_slot $uhost, sub {
418	$state{slot_guard} = shift;	617	$state{slot_guard} = shift;
419		618
420	return unless $state{connect_guard};	619	return unless $state{connect_guard};
421		620
422	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	621	my $ae_error = 595; # connecting
		622
		623	my $connect_cb = sub {
423	$state{fh} = shift	624	$state{fh} = shift
424	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));	625	or do {
425	pop; # free memory, save a tree	626	my $err = "$!";
		627	%state = ();
		628	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
		629	};
426		630
427	return unless delete $state{connect_guard};	631	return unless delete $state{connect_guard};
428		632
429	# get handle	633	# get handle
430	$state{handle} = new AnyEvent::Handle	634	$state{handle} = new AnyEvent::Handle
431	fh => $state{fh},	635	fh => $state{fh},
		636	peername => $rhost,
		637	tls_ctx => $arg{tls_ctx},
		638	# these need to be reconfigured on keepalive handles
432	timeout => $timeout,	639	timeout => $timeout,
433	peername => $rhost,	640	on_error => sub {
434	tls_ctx => $arg{tls_ctx};	641	%state = ();
		642	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
		643	},
		644	on_eof => sub {
		645	%state = ();
		646	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
		647	},
		648	;
435		649
436	# limit the number of persistent connections	650	# limit the number of persistent connections
437	# keepalive not yet supported	651	# keepalive not yet supported
438	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	652	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
439	++$KA_COUNT{$_[1]};	653	# ++$KA_COUNT{$_[1]};
440	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	654	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
441	--$KA_COUNT{$_[1]}	655	# --$KA_COUNT{$_[1]}
442	};	656	# };
443	$hdr{connection} = "keep-alive";	657	# $hdr{connection} = "keep-alive";
444	} else {
445	delete $hdr{connection};
446	}	658	# }
447
448	# (re-)configure handle
449	$state{handle}->on_error (sub {
450	%state = ();
451	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
452	});
453	$state{handle}->on_eof (sub {
454	%state = ();
455	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
456	});
457		659
458	$state{handle}->starttls ("connect") if $rscheme eq "https";	660	$state{handle}->starttls ("connect") if $rscheme eq "https";
459		661
460	# handle actual, non-tunneled, request	662	# handle actual, non-tunneled, request
461	my $handle_actual_request = sub {	663	my $handle_actual_request = sub {
		664	$ae_error = 596; # request phase
		665
462	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	666	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
463		667
464	# send request	668	# send request
465	$state{handle}->push_write (	669	$state{handle}->push_write (
466	"$method $rpath HTTP/1.0\015\012"	670	"$method $rpath HTTP/1.1\015\012"
467	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	671	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
468	. "\015\012"	672	. "\015\012"
469	. (delete $arg{body})	673	. (delete $arg{body})
470	);	674	);
471		675
		676	# return if error occured during push_write()
		677	return unless %state;
		678
472	%hdr = (); # reduce memory usage, save a kitten	679	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
473		680
474	# status line	681	# status line and headers
475	$state{handle}->push_read (line => $qr_nl, sub {	682	$state{read_response} = sub {
476	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
477	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
478
479	my %hdr = ( # response headers
480	HTTPVersion => ",$1",
481	Status => ",$2",
482	Reason => ",$3",
483	URL => ",$url"
484	);
485
486	# headers, could be optimized a bit
487	$state{handle}->unshift_read (line => $qr_nlnl, sub {
488	for ("$_[1]\012") {	683	for ("$_[1]") {
489	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	684	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
490		685
491	# things seen, not parsed:	686	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
492	# p3pP="NON CUR OTPi OUR NOR UNI"	687	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
493		688
494	$hdr{lc $1} .= ",$2"	689	# 100 Continue handling
495	while /\G	690	# should not happen as we don't send expect: 100-continue,
496	([^:\000-\037]*):	691	# but we handle it just in case.
497	[\011\040]*	692	# since we send the request body regardless, if we get an error
498	((?: [^\012]+ \| \012[\011\040] )*)	693	# we are out of-sync, which we currently do NOT handle correctly.
499	\012	694	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
500	/gxc;	695	if $2 eq 100;
501		696
		697	push @pseudo,
		698	HTTPVersion => $1,
		699	Status => $2,
		700	Reason => $3,
502	/\G$/	701	;
		702
		703	my $hdr = parse_hdr
503	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));	704	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		705
		706	%hdr = (%$hdr, @pseudo);
		707	}
		708
		709	# redirect handling
		710	# microsoft and other shitheads don't give a shit for following standards,
		711	# try to support some common forms of broken Location headers.
		712	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		713	$hdr{location} =~ s/^\.\/+//;
		714
		715	my $url = "$rscheme://$uhost:$uport";
		716
		717	unless ($hdr{location} =~ s/^\///) {
		718	$url .= $upath;
		719	$url =~ s/\/[^\/]*$//;
504	}	720	}
505		721
506	substr $_, 0, 1, ""	722	$hdr{location} = "$url/$hdr{location}";
507	for values %hdr;	723	}
508		724
		725	my $redirect;
		726
		727	if ($recurse) {
		728	my $status = $hdr{Status};
		729
		730	# industry standard is to redirect POST as GET for
		731	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		732	# also, the UA should ask the user for 301 and 307 and POST,
		733	# industry standard seems to be to simply follow.
		734	# we go with the industry standard.
		735	if ($status == 301 or $status == 302 or $status == 303) {
		736	# HTTP/1.1 is unclear on how to mutate the method
		737	$method = "GET" unless $method eq "HEAD";
509	# redirect handling	738	$redirect = 1;
510	# microsoft and other shitheads don't give a shit for following standards,	739	} elsif ($status == 307) {
511	# try to support some common forms of broken Location headers.	740	$redirect = 1;
512	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	741	}
513	$hdr{location} =~ s/^\.\/+//;	742	}
514		743
515	my $url = "$rscheme://$uhost:$uport";	744	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		745	my $may_keep_alive = $_[3];
516		746
517	unless ($hdr{location} =~ s/^\///) {	747	$state{handle}->destroy if $state{handle};
		748	%state = ();
		749
		750	if (defined $_[1]) {
		751	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		752	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		753	}
		754
		755	# set-cookie processing
		756	if ($arg{cookie_jar}) {
		757	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		758	}
		759
		760	if ($redirect && exists $hdr{location}) {
		761	# we ignore any errors, as it is very common to receive
		762	# Content-Length != 0 but no actual body
		763	# we also access %hdr, as $_[1] might be an erro
		764	http_request (
		765	$method => $hdr{location},
		766	%arg,
		767	recurse => $recurse - 1,
		768	Redirect => [$_[0], \%hdr],
		769	$cb);
		770	} else {
		771	$cb->($_[0], \%hdr);
		772	}
		773	};
		774
		775	$ae_error = 597; # body phase
		776
		777	my $len = $hdr{"content-length"};
		778
		779	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		780	$finish->(undef, 598 => "Request cancelled by on_header");
		781	} elsif (
		782	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		783	or $method eq "HEAD"
		784	or (defined $len && !$len)
		785	) {
		786	# no body
		787	$finish->("", undef, undef, 1);
		788	} else {
		789	# body handling, many different code paths
		790	# - no body expected
		791	# - want_body_handle
		792	# - te chunked
		793	# - 2x length known (with or without on_body)
		794	# - 2x length not known (with or without on_body)
		795	if (!$redirect && $arg{want_body_handle}) {
		796	$_[0]->on_eof (undef);
		797	$_[0]->on_error (undef);
		798	$_[0]->on_read (undef);
		799
		800	$finish->(delete $state{handle});
		801
		802	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		803	my $cl = 0;
		804	my $body = undef;
		805	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		806
		807	my $read_chunk; $read_chunk = sub {
		808	$_[1] =~ /^([0-9a-fA-F]+)/
		809	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		810
		811	my $len = hex $1;
		812
		813	if ($len) {
518	$url .= $upath;	814	$cl += $len;
519	$url =~ s/\/[^\/]*$//;	815
		816	$_[0]->push_read (chunk => $len, sub {
		817	$on_body->($_[1], \%hdr)
		818	or return $finish->(undef, 598 => "Request cancelled by on_body");
		819
		820	$_[0]->push_read (line => sub {
		821	length $_[1]
		822	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		823	$_[0]->push_read (line => $read_chunk);
		824	});
		825	});
		826	} else {
		827	$hdr{"content-length"} \|\|= $cl;
		828
		829	$_[0]->push_read (line => $qr_nlnl, sub {
		830	if (length $_[1]) {
		831	for ("$_[1]") {
		832	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		833
		834	my $hdr = parse_hdr
		835	or return $finish->(undef, $ae_error => "Garbled response trailers");
		836
		837	%hdr = (%hdr, %$hdr);
		838	}
		839	}
		840
		841	$finish->($body, undef, undef, 1);
		842	});
		843	}
		844	};
		845
		846	$_[0]->push_read (line => $read_chunk);
		847
		848	} elsif ($arg{on_body}) {
		849	if ($len) {
		850	$_[0]->on_read (sub {
		851	$len -= length $_[0]{rbuf};
		852
		853	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		854	or return $finish->(undef, 598 => "Request cancelled by on_body");
		855
		856	$len > 0
		857	or $finish->("", undef, undef, 1);
		858	});
		859	} else {
		860	$_[0]->on_eof (sub {
		861	$finish->("");
		862	});
		863	$_[0]->on_read (sub {
		864	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		865	or $finish->(undef, 598 => "Request cancelled by on_body");
		866	});
520	}	867	}
521
522	$hdr{location} = "$url/$hdr{location}";
523	}	868	} else {
		869	$_[0]->on_eof (undef);
524		870
525	my $redirect;
526
527	if ($recurse) {	871	if ($len) {
528	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {	872	$_[0]->on_read (sub {
529	# apparently, mozilla et al. just change POST to GET here	873	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
530	# more research is needed before we do the same	874	if $len <= length $_[0]{rbuf};
531	$redirect = 1;	875	});
532	} elsif ($hdr{Status} == 303) {	876	} else {
533	# even http/1.1 is unclear on how to mutate the method	877	$_[0]->on_error (sub {
534	$method = "GET" unless $method eq "HEAD";	878	($! == Errno::EPIPE \|\| !$!)
		879	? $finish->(delete $_[0]{rbuf})
		880	: $finish->(undef, $ae_error => $_[2]);
535	$redirect = 1;	881	});
536	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {	882	$_[0]->on_read (sub { });
537	$redirect = 1;
538	}	883	}
539	}	884	}
540
541	my $finish = sub {
542	$state{handle}->destroy if $state{handle};
543	%state = ();
544
545	# set-cookie processing
546	if ($arg{cookie_jar}) {
547	for ($_[1]{"set-cookie"}) {
548	# parse NAME=VALUE
549	my @kv;
550
551	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
552	my $name = $1;
553	my $value = $3;
554
555	unless ($value) {
556	$value = $2;
557	$value =~ s/\\(.)/$1/gs;
558	}
559
560	push @kv, $name => $value;
561
562	last unless /\G\s*;/gc;
563	}
564
565	last unless @kv;
566
567	my $name = shift @kv;
568	my %kv = (value => shift @kv, @kv);
569
570	my $cdom;
571	my $cpath = (delete $kv{path}) \|\| "/";
572
573	if (exists $kv{domain}) {
574	$cdom = delete $kv{domain};
575
576	$cdom =~ s/^\.?/./; # make sure it starts with a "."
577
578	next if $cdom =~ /\.$/;
579
580	# this is not rfc-like and not netscape-like. go figure.
581	my $ndots = $cdom =~ y/.//;
582	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
583	} else {
584	$cdom = $uhost;
585	}
586
587	# store it
588	$arg{cookie_jar}{version} = 1;
589	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
590
591	redo if /\G\s*,/gc;
592	}
593	}
594
595	if ($redirect) {
596	# we ignore any errors, as it is very common to receive
597	# Content-Length != 0 but no actual body
598	# we also access %hdr, as $_[1] might be an erro
599	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
600	} else {
601	$cb->($_[0], $_[1]);
602	}
603	};
604
605	my $len = $hdr{"content-length"};
606
607	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
608	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
609	} elsif (
610	$hdr{Status} =~ /^(?:1..\|[23]04)$/
611	or $method eq "HEAD"
612	or (defined $len && !$len)
613	) {
614	# no body
615	$finish->("", \%hdr);
616	} else {
617	# body handling, four different code paths
618	# for want_body_handle, on_body (2x), normal (2x)
619	# we might read too much here, but it does not matter yet (no pers. connections)
620	if (!$redirect && $arg{want_body_handle}) {
621	$_[0]->on_eof (undef);
622	$_[0]->on_error (undef);
623	$_[0]->on_read (undef);
624
625	$finish->(delete $state{handle}, \%hdr);
626
627	} elsif ($arg{on_body}) {
628	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
629	if ($len) {
630	$_[0]->on_eof (undef);
631	$_[0]->on_read (sub {
632	$len -= length $_[0]{rbuf};
633
634	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
635	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
636
637	$len > 0
638	or $finish->("", \%hdr);
639	});
640	} else {
641	$_[0]->on_eof (sub {
642	$finish->("", \%hdr);
643	});
644	$_[0]->on_read (sub {
645	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
646	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
647	});
648	}
649	} else {
650	$_[0]->on_eof (undef);
651
652	if ($len) {
653	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
654	$_[0]->on_read (sub {
655	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
656	if $len <= length $_[0]{rbuf};
657	});
658	} else {
659	$_[0]->on_error (sub {
660	$! == Errno::EPIPE \|\| !$!
661	? $finish->(delete $_[0]{rbuf}, \%hdr)
662	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
663	});
664	$_[0]->on_read (sub { });
665	}
666	}
667	}
668	});	885	}
669	});	886	};
		887
		888	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
670	};	889	};
671		890
672	# now handle proxy-CONNECT method	891	# now handle proxy-CONNECT method
673	if ($proxy && $uscheme eq "https") {	892	if ($proxy && $uscheme eq "https") {
674	# oh dear, we have to wrap it into a connect request	893	# oh dear, we have to wrap it into a connect request
675		894
676	# maybe re-use $uauthority with patched port?	895	# maybe re-use $uauthority with patched port?
677	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	896	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
678	$state{handle}->push_read (line => $qr_nlnl, sub {	897	$state{handle}->push_read (line => $qr_nlnl, sub {
679	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	898	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
680	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	899	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
681		900
682	if ($2 == 200) {	901	if ($2 == 200) {
683	$rpath = $upath;	902	$rpath = $upath;
684	&$handle_actual_request;	903	&$handle_actual_request;
685	} else {	904	} else {
686	%state = ();	905	%state = ();
687	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	906	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
688	}	907	}
689	});	908	});
690	} else {	909	} else {
691	&$handle_actual_request;	910	&$handle_actual_request;
692	}	911	}
693
694	}, sub {
695	$timeout
696	};	912	};
		913
		914	my $tcp_connect = $arg{tcp_connect}
		915	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		916
		917	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		918
697	};	919	};
698		920
699	defined wantarray && AnyEvent::Util::guard { %state = () }	921	defined wantarray && AnyEvent::Util::guard { %state = () }
700	}	922	}
701		923
…		…
715	&http_request	937	&http_request
716	}	938	}
717		939
718	=back	940	=back
719		941
		942	=head2 DNS CACHING
		943
		944	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		945	the actual connection, which in turn uses AnyEvent::DNS to resolve
		946	hostnames. The latter is a simple stub resolver and does no caching
		947	on its own. If you want DNS caching, you currently have to provide
		948	your own default resolver (by storing a suitable resolver object in
		949	C<$AnyEvent::DNS::RESOLVER>).
		950
720	=head2 GLOBAL FUNCTIONS AND VARIABLES	951	=head2 GLOBAL FUNCTIONS AND VARIABLES
721		952
722	=over 4	953	=over 4
723		954
724	=item AnyEvent::HTTP::set_proxy "proxy-url"	955	=item AnyEvent::HTTP::set_proxy "proxy-url"
725		956
726	Sets the default proxy server to use. The proxy-url must begin with a	957	Sets the default proxy server to use. The proxy-url must begin with a
727	string of the form C<http://host:port> (optionally C<https:...>).	958	string of the form C<http://host:port> (optionally C<https:...>), croaks
		959	otherwise.
		960
		961	To clear an already-set proxy, use C<undef>.
		962
		963	=item $date = AnyEvent::HTTP::format_date $timestamp
		964
		965	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		966	Date (RFC 2616).
		967
		968	=item $timestamp = AnyEvent::HTTP::parse_date $date
		969
		970	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		971	bunch of minor variations of those, and returns the corresponding POSIX
		972	timestamp, or C<undef> if the date cannot be parsed.
728		973
729	=item $AnyEvent::HTTP::MAX_RECURSE	974	=item $AnyEvent::HTTP::MAX_RECURSE
730		975
731	The default value for the C<recurse> request parameter (default: C<10>).	976	The default value for the C<recurse> request parameter (default: C<10>).
732		977
…		…
735	The default value for the C<User-Agent> header (the default is	980	The default value for the C<User-Agent> header (the default is
736	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	981	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
737		982
738	=item $AnyEvent::HTTP::MAX_PER_HOST	983	=item $AnyEvent::HTTP::MAX_PER_HOST
739		984
740	The maximum number of concurrent conenctions to the same host (identified	985	The maximum number of concurrent connections to the same host (identified
741	by the hostname). If the limit is exceeded, then the additional requests	986	by the hostname). If the limit is exceeded, then the additional requests
742	are queued until previous connections are closed.	987	are queued until previous connections are closed.
743		988
744	The default value for this is C<4>, and it is highly advisable to not	989	The default value for this is C<4>, and it is highly advisable to not
745	increase it.	990	increase it.
…		…
752		997
753	=back	998	=back
754		999
755	=cut	1000	=cut
756		1001
		1002	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1003	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1004
		1005	sub format_date($) {
		1006	my ($time) = @_;
		1007
		1008	# RFC 822/1123 format
		1009	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1010
		1011	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1012	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1013	$H, $M, $S;
		1014	}
		1015
		1016	sub parse_date($) {
		1017	my ($date) = @_;
		1018
		1019	my ($d, $m, $y, $H, $M, $S);
		1020
		1021	if ($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$/) {
		1022	# RFC 822/1123, required by RFC 2616 (with " ")
		1023	# cookie dates (with "-")
		1024
		1025	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1026
		1027	} elsif ($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]?) GMT$/) {
		1028	# RFC 850
		1029	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1030
		1031	} elsif ($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])$/) {
		1032	# ISO C's asctime
		1033	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1034	}
		1035	# other formats fail in the loop below
		1036
		1037	for (0..11) {
		1038	if ($m eq $month[$_]) {
		1039	require Time::Local;
		1040	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1041	}
		1042	}
		1043
		1044	undef
		1045	}
		1046
757	sub set_proxy($) {	1047	sub set_proxy($) {
		1048	if (length $_[0]) {
758	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1049	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1050	or Carp::croak "$_[0]: invalid proxy URL";
		1051	$PROXY = [$2, $3 \|\| 3128, $1]
		1052	} else {
		1053	undef $PROXY;
		1054	}
759	}	1055	}
760		1056
761	# initialise proxy from environment	1057	# initialise proxy from environment
		1058	eval {
762	set_proxy $ENV{http_proxy};	1059	set_proxy $ENV{http_proxy};
		1060	};
		1061
		1062	=head2 SOCKS PROXIES
		1063
		1064	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1065	compile your perl to support socks, or use an external program such as
		1066	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1067	transparently.
		1068
		1069	Alternatively, for AnyEvent::HTTP only, you can use your own
		1070	C<tcp_connect> function that does the proxy handshake - here is an example
		1071	that works with socks4a proxies:
		1072
		1073	use Errno;
		1074	use AnyEvent::Util;
		1075	use AnyEvent::Socket;
		1076	use AnyEvent::Handle;
		1077
		1078	# host, port and username of/for your socks4a proxy
		1079	my $socks_host = "10.0.0.23";
		1080	my $socks_port = 9050;
		1081	my $socks_user = "";
		1082
		1083	sub socks4a_connect {
		1084	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1085
		1086	my $hdl = new AnyEvent::Handle
		1087	connect => [$socks_host, $socks_port],
		1088	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1089	on_error => sub { $connect_cb->() },
		1090	;
		1091
		1092	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1093
		1094	$hdl->push_read (chunk => 8, sub {
		1095	my ($hdl, $chunk) = @_;
		1096	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1097
		1098	if ($status == 0x5a) {
		1099	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1100	} else {
		1101	$! = Errno::ENXIO; $connect_cb->();
		1102	}
		1103	});
		1104
		1105	$hdl
		1106	}
		1107
		1108	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1109	possibly after switching off other proxy types:
		1110
		1111	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1112
		1113	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1114	my ($data, $headers) = @_;
		1115	...
		1116	};
763		1117
764	=head1 SEE ALSO	1118	=head1 SEE ALSO
765		1119
766	L<AnyEvent>.	1120	L<AnyEvent>.
767		1121

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.43 by root, Mon Jul 6 03:03:12 2009 UTC vs. Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.43 by root, Mon Jul 6 03:03:12 2009 UTC vs.
Revision 1.79 by root, Sat Jan 1 20:01:07 2011 UTC