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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.51 by root, Fri Aug 14 15:21:33 2009 UTC vs.
Revision 1.83 by root, Sun Jan 2 05:02:28 2011 UTC

…		…
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 5.0 ();	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 = '1.43';	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:> (this can be	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
144	suppressed by using C<undef> for these headers in which case they won't be	172	(this can be suppressed by using C<undef> for these headers in which case
145	sent at all).	173	they won't be sent at all).
146		174
147	=item timeout => $seconds	175	=item timeout => $seconds
148		176
149	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
150	the timeout, as will read or write activity, i.e. this is not an overall	178	the timeout, as will read or write activity, i.e. this is not an overall
…		…
160	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
161	HTTPS.	189	HTTPS.
162		190
163	=item body => $string	191	=item body => $string
164		192
165	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
166	this module might offer more options).	194	this module might offer more options).
167		195
168	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
169		197
170	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
171	based on the original netscape specification.	199	based on the original netscape specification.
172		200
173	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which
174	get updated automatically. It is possible to save the cookie_jar to	202	will get updated automatically. It is possible to save the cookie jar
175	persistent storage with something like JSON or Storable, but this is not	203	to persistent storage with something like JSON or Storable - see the
176	recommended, as expiry times are currently being ignored.	204	C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
		205	expired or session-only cookies, and also for documentation on the format
		206	of the cookie jar.
177		207
178	Note that this cookie implementation is not of very high quality, nor	208	Note that this cookie implementation is not meant to be complete. If
179	meant to be complete. If you want complete cookie management you have to	209	you want complete cookie management you have to do that on your
180	do that on your own. C<cookie_jar> is meant as a quick fix to get some	210	own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
181	cookie-using sites working. Cookies are a privacy disaster, do not use	211	working. Cookies are a privacy disaster, do not use them unless required
182	them unless required to.	212	to.
		213
		214	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		215	headers will be set and handled by this module, otherwise they will be
		216	left untouched.
183		217
184	=item tls_ctx => $scheme \| $tls_ctx	218	=item tls_ctx => $scheme \| $tls_ctx
185		219
186	Specifies the AnyEvent::TLS context to be used for https connections. This	220	Specifies the AnyEvent::TLS context to be used for https connections. This
187	parameter follows the same rules as the C<tls_ctx> parameter to	221	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
200	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>	234	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
201	and behaves exactly the same way (e.g. it has to provide a	235	and behaves exactly the same way (e.g. it has to provide a
202	timeout). See the description for the C<$prepare_cb> argument of	236	timeout). See the description for the C<$prepare_cb> argument of
203	C<AnyEvent::Socket::tcp_connect> for details.	237	C<AnyEvent::Socket::tcp_connect> for details.
204		238
		239	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		240
		241	In even rarer cases you want total control over how AnyEvent::HTTP
		242	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		243	to do this, but you can provide your own C<tcp_connect> function -
		244	obviously, it has to follow the same calling conventions, except that it
		245	may always return a connection guard object.
		246
		247	There are probably lots of weird uses for this function, starting from
		248	tracing the hosts C<http_request> actually tries to connect, to (inexact
		249	but fast) host => IP address caching or even socks protocol support.
		250
205	=item on_header => $callback->($headers)	251	=item on_header => $callback->($headers)
206		252
207	When specified, this callback will be called with the header hash as soon	253	When specified, this callback will be called with the header hash as soon
208	as headers have been successfully received from the remote server (not on	254	as headers have been successfully received from the remote server (not on
209	locally-generated errors).	255	locally-generated errors).
…		…
214		260
215	This callback is useful, among other things, to quickly reject unwanted	261	This callback is useful, among other things, to quickly reject unwanted
216	content, which, if it is supposed to be rare, can be faster than first	262	content, which, if it is supposed to be rare, can be faster than first
217	doing a C<HEAD> request.	263	doing a C<HEAD> request.
218		264
		265	The downside is that cancelling the request makes it impossible to re-use
		266	the connection. Also, the C<on_header> callback will not receive any
		267	trailer (headers sent after the response body).
		268
219	Example: cancel the request unless the content-type is "text/html".	269	Example: cancel the request unless the content-type is "text/html".
220		270
221	on_header => sub {	271	on_header => sub {
222	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	272	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
223	},	273	},
…		…
229	string instead of the body data.	279	string instead of the body data.
230		280
231	It has to return either true (in which case AnyEvent::HTTP will continue),	281	It has to return either true (in which case AnyEvent::HTTP will continue),
232	or false, in which case AnyEvent::HTTP will cancel the download (and call	282	or false, in which case AnyEvent::HTTP will cancel the download (and call
233	the completion callback with an error code of C<598>).	283	the completion callback with an error code of C<598>).
		284
		285	The downside to cancelling the request is that it makes it impossible to
		286	re-use the connection.
234		287
235	This callback is useful when the data is too large to be held in memory	288	This callback is useful when the data is too large to be held in memory
236	(so the callback writes it to a file) or when only some information should	289	(so the callback writes it to a file) or when only some information should
237	be extracted, or when the body should be processed incrementally.	290	be extracted, or when the body should be processed incrementally.
238		291
…		…
264	If you think you need this, first have a look at C<on_body>, to see if	317	If you think you need this, first have a look at C<on_body>, to see if
265	that doesn't solve your problem in a better way.	318	that doesn't solve your problem in a better way.
266		319
267	=back	320	=back
268		321
269	Example: make a simple HTTP GET request for http://www.nethype.de/	322	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		323	the response body.
270		324
271	http_request GET => "http://www.nethype.de/", sub {	325	http_request GET => "http://www.nethype.de/", sub {
272	my ($body, $hdr) = @_;	326	my ($body, $hdr) = @_;
273	print "$body\n";	327	print "$body\n";
274	};	328	};
275		329
276	Example: make a HTTP HEAD request on https://www.google.com/, use a	330	Example: do a HTTP HEAD request on https://www.google.com/, use a
277	timeout of 30 seconds.	331	timeout of 30 seconds.
278		332
279	http_request	333	http_request
280	GET => "https://www.google.com",	334	GET => "https://www.google.com",
281	timeout => 30,	335	timeout => 30,
…		…
284	use Data::Dumper;	338	use Data::Dumper;
285	print Dumper $hdr;	339	print Dumper $hdr;
286	}	340	}
287	;	341	;
288		342
289	Example: make another simple HTTP GET request, but immediately try to	343	Example: do another simple HTTP GET request, but immediately try to
290	cancel it.	344	cancel it.
291		345
292	my $request = http_request GET => "http://www.nethype.de/", sub {	346	my $request = http_request GET => "http://www.nethype.de/", sub {
293	my ($body, $hdr) = @_;	347	my ($body, $hdr) = @_;
294	print "$body\n";	348	print "$body\n";
…		…
326	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	380	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
327		381
328	_slot_schedule $_[0];	382	_slot_schedule $_[0];
329	}	383	}
330		384
331	our $qr_nl = qr{\015?\012};	385	#############################################################################
		386
		387	# expire cookies
		388	sub cookie_jar_expire($;$) {
		389	my ($jar, $session_end) = @_;
		390
		391	%$jar = () if $jar->{version} != 1;
		392
		393	my $anow = AE::now;
		394
		395	while (my ($chost, $paths) = each %$jar) {
		396	next unless ref $paths;
		397
		398	while (my ($cpath, $cookies) = each %$paths) {
		399	while (my ($cookie, $kv) = each %$cookies) {
		400	if (exists $kv->{_expires}) {
		401	delete $cookies->{$cookie}
		402	if $anow > $kv->{_expires};
		403	} elsif ($session_end) {
		404	delete $cookies->{$cookie};
		405	}
		406	}
		407
		408	delete $paths->{$cpath}
		409	unless %$cookies;
		410	}
		411
		412	delete $jar->{$chost}
		413	unless %$paths;
		414	}
		415	}
		416
		417	# extract cookies from jar
		418	sub cookie_jar_extract($$$$) {
		419	my ($jar, $uscheme, $uhost, $upath) = @_;
		420
		421	$uhost = lc $uhost;
		422
		423	%$jar = () if $jar->{version} != 1;
		424
		425	my @cookies;
		426
		427	while (my ($chost, $paths) = each %$jar) {
		428	next unless ref $paths;
		429
		430	if ($chost =~ /^\./) {
		431	next unless $chost eq substr $uhost, -length $chost;
		432	} elsif ($chost =~ /\./) {
		433	next unless $chost eq $uhost;
		434	} else {
		435	next;
		436	}
		437
		438	while (my ($cpath, $cookies) = each %$paths) {
		439	next unless $cpath eq substr $upath, 0, length $cpath;
		440
		441	while (my ($cookie, $kv) = each %$cookies) {
		442	next if $uscheme ne "https" && exists $kv->{secure};
		443
		444	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
		445	delete $cookies->{$cookie};
		446	next;
		447	}
		448
		449	my $value = $kv->{value};
		450
		451	if ($value =~ /[=;,[:space:]]/) {
		452	$value =~ s/([\\"])/\\$1/g;
		453	$value = "\"$value\"";
		454	}
		455
		456	push @cookies, "$cookie=$value";
		457	}
		458	}
		459	}
		460
		461	\@cookies
		462	}
		463
		464	# parse set_cookie header into jar
		465	sub cookie_jar_set_cookie($$$$) {
		466	my ($jar, $set_cookie, $uhost, $date) = @_;
		467
		468	my $anow = int AE::now;
		469	my $snow; # server-now
		470
		471	for ($set_cookie) {
		472	# parse NAME=VALUE
		473	my @kv;
		474
		475	# expires is not http-compliant in the original cookie-spec,
		476	# we support the official date format and some extensions
		477	while (
		478	m{
		479	\G\s*
		480	(?:
		481	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		482	\| ([^=;,[:space:]]+) (?: \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) ) )?
		483	)
		484	}gcxsi
		485	) {
		486	my $name = $2;
		487	my $value = $4;
		488
		489	if (defined $1) {
		490	# expires
		491	$name = "expires";
		492	$value = $1;
		493	} elsif (defined $3) {
		494	# quoted
		495	$value = $3;
		496	$value =~ s/\\(.)/$1/gs;
		497	}
		498
		499	push @kv, lc $name, $value;
		500
		501	last unless /\G\s*;/gc;
		502	}
		503
		504	last unless @kv;
		505
		506	my $name = shift @kv;
		507	my %kv = (value => shift @kv, @kv);
		508
		509	if (exists $kv{"max-age"}) {
		510	$kv{_expires} = $anow + delete $kv{"max-age"};
		511	} elsif (exists $kv{expires}) {
		512	$snow \|\|= parse_date ($date) \|\| $anow;
		513	$kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
		514	} else {
		515	delete $kv{_expires};
		516	}
		517
		518	my $cdom;
		519	my $cpath = (delete $kv{path}) \|\| "/";
		520
		521	if (exists $kv{domain}) {
		522	$cdom = delete $kv{domain};
		523
		524	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		525
		526	next if $cdom =~ /\.$/;
		527
		528	# this is not rfc-like and not netscape-like. go figure.
		529	my $ndots = $cdom =~ y/.//;
		530	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		531	} else {
		532	$cdom = $uhost;
		533	}
		534
		535	# store it
		536	$jar->{version} = 1;
		537	$jar->{lc $cdom}{$cpath}{$name} = \%kv;
		538
		539	redo if /\G\s*,/gc;
		540	}
		541	}
		542
		543	# continue to parse $_ for headers and place them into the arg
		544	sub parse_hdr() {
		545	my %hdr;
		546
		547	# things seen, not parsed:
		548	# p3pP="NON CUR OTPi OUR NOR UNI"
		549
		550	$hdr{lc $1} .= ",$2"
		551	while /\G
		552	([^:\000-\037]*):
		553	[\011\040]*
		554	((?: [^\012]+ \| \012[\011\040] )*)
		555	\012
		556	/gxc;
		557
		558	/\G$/
		559	or return;
		560
		561	# remove the "," prefix we added to all headers above
		562	substr $_, 0, 1, ""
		563	for values %hdr;
		564
		565	\%hdr
		566	}
		567
332	our $qr_nlnl = qr{(?<![^\012])\015?\012};	568	our $qr_nlnl = qr{(?<![^\012])\015?\012};
333		569
334	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	570	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
335	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	571	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
336		572
…		…
349	while (my ($k, $v) = each %$hdr) {	585	while (my ($k, $v) = each %$hdr) {
350	$hdr{lc $k} = $v;	586	$hdr{lc $k} = $v;
351	}	587	}
352	}	588	}
353		589
		590	# pseudo headers for all subsequent responses
		591	my @pseudo = (URL => $url);
		592	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		593
354	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	594	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
355		595
356	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	596	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
357	if $recurse < 0;	597	if $recurse < 0;
358		598
359	my $proxy = $arg{proxy} \|\| $PROXY;	599	my $proxy = $arg{proxy} \|\| $PROXY;
360	my $timeout = $arg{timeout} \|\| $TIMEOUT;	600	my $timeout = $arg{timeout} \|\| $TIMEOUT;
361		601
362	my ($uscheme, $uauthority, $upath, $query, $fragment) =	602	my ($uscheme, $uauthority, $upath, $query, $fragment) =
363	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	603	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
364		604
365	$uscheme = lc $uscheme;	605	$uscheme = lc $uscheme;
366		606
367	my $uport = $uscheme eq "http" ? 80	607	my $uport = $uscheme eq "http" ? 80
368	: $uscheme eq "https" ? 443	608	: $uscheme eq "https" ? 443
369	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });	609	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
370		610
371	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	611	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
372	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	612	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
373		613
374	my $uhost = $1;	614	my $uhost = $1;
375	$uport = $2 if defined $2;	615	$uport = $2 if defined $2;
376		616
377	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";	617	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		618	unless exists $hdr{host};
378		619
379	$uhost =~ s/^\[(.*)\]$/$1/;	620	$uhost =~ s/^\[(.*)\]$/$1/;
380	$upath .= "?$query" if length $query;	621	$upath .= $query if length $query;
381		622
382	$upath =~ s%^/?%/%;	623	$upath =~ s%^/?%/%;
383		624
384	# cookie processing	625	# cookie processing
385	if (my $jar = $arg{cookie_jar}) {	626	if (my $jar = $arg{cookie_jar}) {
386	%$jar = () if $jar->{version} != 1;	627	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
387		628
388	my @cookie;
389
390	while (my ($chost, $v) = each %$jar) {
391	if ($chost =~ /^\./) {
392	next unless $chost eq substr $uhost, -length $chost;
393	} elsif ($chost =~ /\./) {
394	next unless $chost eq $uhost;
395	} else {
396	next;
397	}
398
399	while (my ($cpath, $v) = each %$v) {
400	next unless $cpath eq substr $upath, 0, length $cpath;
401
402	while (my ($k, $v) = each %$v) {
403	next if $uscheme ne "https" && exists $v->{secure};
404	my $value = $v->{value};
405	$value =~ s/([\\"])/\\$1/g;
406	push @cookie, "$k=\"$value\"";
407	}
408	}
409	}
410
411	$hdr{cookie} = join "; ", @cookie	629	$hdr{cookie} = join "; ", @$cookies
412	if @cookie;	630	if @$cookies;
413	}	631	}
414		632
415	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	633	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
416		634
417	if ($proxy) {	635	if ($proxy) {
…		…
425	} else {	643	} else {
426	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	644	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
427	}	645	}
428		646
429	# leave out fragment and query string, just a heuristic	647	# leave out fragment and query string, just a heuristic
430	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	648	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
431	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	649	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
432		650
433	$hdr{"content-length"} = length $arg{body};	651	$hdr{"content-length"} = length $arg{body}
		652	if length $arg{body} \|\| $method ne "GET";
		653
		654	$hdr{connection} = "close TE"; #1.1
		655	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
434		656
435	my %state = (connect_guard => 1);	657	my %state = (connect_guard => 1);
436		658
437	_get_slot $uhost, sub {	659	_get_slot $uhost, sub {
438	$state{slot_guard} = shift;	660	$state{slot_guard} = shift;
439		661
440	return unless $state{connect_guard};	662	return unless $state{connect_guard};
441		663
442	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	664	my $ae_error = 595; # connecting
		665
		666	# handle actual, non-tunneled, request
		667	my $handle_actual_request = sub {
		668	$ae_error = 596; # request phase
		669
		670	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		671
		672	# send request
		673	$state{handle}->push_write (
		674	"$method $rpath HTTP/1.1\015\012"
		675	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
		676	. "\015\012"
		677	. (delete $arg{body})
		678	);
		679
		680	# return if error occured during push_write()
		681	return unless %state;
		682
		683	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
		684
		685	# status line and headers
		686	$state{read_response} = sub {
		687	for ("$_[1]") {
		688	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		689
		690	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
		691	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
		692
		693	# 100 Continue handling
		694	# should not happen as we don't send expect: 100-continue,
		695	# but we handle it just in case.
		696	# since we send the request body regardless, if we get an error
		697	# we are out of-sync, which we currently do NOT handle correctly.
		698	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		699	if $2 eq 100;
		700
		701	push @pseudo,
		702	HTTPVersion => $1,
		703	Status => $2,
		704	Reason => $3,
		705	;
		706
		707	my $hdr = parse_hdr
		708	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		709
		710	%hdr = (%$hdr, @pseudo);
		711	}
		712
		713	# redirect handling
		714	# microsoft and other shitheads don't give a shit for following standards,
		715	# try to support some common forms of broken Location headers.
		716	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		717	$hdr{location} =~ s/^\.\/+//;
		718
		719	my $url = "$rscheme://$uhost:$uport";
		720
		721	unless ($hdr{location} =~ s/^\///) {
		722	$url .= $upath;
		723	$url =~ s/\/[^\/]*$//;
		724	}
		725
		726	$hdr{location} = "$url/$hdr{location}";
		727	}
		728
		729	my $redirect;
		730
		731	if ($recurse) {
		732	my $status = $hdr{Status};
		733
		734	# industry standard is to redirect POST as GET for
		735	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		736	# also, the UA should ask the user for 301 and 307 and POST,
		737	# industry standard seems to be to simply follow.
		738	# we go with the industry standard.
		739	if ($status == 301 or $status == 302 or $status == 303) {
		740	# HTTP/1.1 is unclear on how to mutate the method
		741	$method = "GET" unless $method eq "HEAD";
		742	$redirect = 1;
		743	} elsif ($status == 307) {
		744	$redirect = 1;
		745	}
		746	}
		747
		748	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		749	my $may_keep_alive = $_[3];
		750
		751	$state{handle}->destroy if $state{handle};
		752	%state = ();
		753
		754	if (defined $_[1]) {
		755	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		756	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		757	}
		758
		759	# set-cookie processing
		760	if ($arg{cookie_jar}) {
		761	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost, $hdr{date};
		762	}
		763
		764	if ($redirect && exists $hdr{location}) {
		765	# we ignore any errors, as it is very common to receive
		766	# Content-Length != 0 but no actual body
		767	# we also access %hdr, as $_[1] might be an erro
		768	http_request (
		769	$method => $hdr{location},
		770	%arg,
		771	recurse => $recurse - 1,
		772	Redirect => [$_[0], \%hdr],
		773	$cb);
		774	} else {
		775	$cb->($_[0], \%hdr);
		776	}
		777	};
		778
		779	$ae_error = 597; # body phase
		780
		781	my $len = $hdr{"content-length"};
		782
		783	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		784	$finish->(undef, 598 => "Request cancelled by on_header");
		785	} elsif (
		786	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		787	or $method eq "HEAD"
		788	or (defined $len && !$len)
		789	) {
		790	# no body
		791	$finish->("", undef, undef, 1);
		792	} else {
		793	# body handling, many different code paths
		794	# - no body expected
		795	# - want_body_handle
		796	# - te chunked
		797	# - 2x length known (with or without on_body)
		798	# - 2x length not known (with or without on_body)
		799	if (!$redirect && $arg{want_body_handle}) {
		800	$_[0]->on_eof (undef);
		801	$_[0]->on_error (undef);
		802	$_[0]->on_read (undef);
		803
		804	$finish->(delete $state{handle});
		805
		806	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		807	my $cl = 0;
		808	my $body = undef;
		809	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		810
		811	$state{read_chunk} = sub {
		812	$_[1] =~ /^([0-9a-fA-F]+)/
		813	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		814
		815	my $len = hex $1;
		816
		817	if ($len) {
		818	$cl += $len;
		819
		820	$_[0]->push_read (chunk => $len, sub {
		821	$on_body->($_[1], \%hdr)
		822	or return $finish->(undef, 598 => "Request cancelled by on_body");
		823
		824	$_[0]->push_read (line => sub {
		825	length $_[1]
		826	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		827	$_[0]->push_read (line => $state{read_chunk});
		828	});
		829	});
		830	} else {
		831	$hdr{"content-length"} \|\|= $cl;
		832
		833	$_[0]->push_read (line => $qr_nlnl, sub {
		834	if (length $_[1]) {
		835	for ("$_[1]") {
		836	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		837
		838	my $hdr = parse_hdr
		839	or return $finish->(undef, $ae_error => "Garbled response trailers");
		840
		841	%hdr = (%hdr, %$hdr);
		842	}
		843	}
		844
		845	$finish->($body, undef, undef, 1);
		846	});
		847	}
		848	};
		849
		850	$_[0]->push_read (line => $state{read_chunk});
		851
		852	} elsif ($arg{on_body}) {
		853	if ($len) {
		854	$_[0]->on_read (sub {
		855	$len -= length $_[0]{rbuf};
		856
		857	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		858	or return $finish->(undef, 598 => "Request cancelled by on_body");
		859
		860	$len > 0
		861	or $finish->("", undef, undef, 1);
		862	});
		863	} else {
		864	$_[0]->on_eof (sub {
		865	$finish->("");
		866	});
		867	$_[0]->on_read (sub {
		868	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		869	or $finish->(undef, 598 => "Request cancelled by on_body");
		870	});
		871	}
		872	} else {
		873	$_[0]->on_eof (undef);
		874
		875	if ($len) {
		876	$_[0]->on_read (sub {
		877	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		878	if $len <= length $_[0]{rbuf};
		879	});
		880	} else {
		881	$_[0]->on_error (sub {
		882	($! == Errno::EPIPE \|\| !$!)
		883	? $finish->(delete $_[0]{rbuf})
		884	: $finish->(undef, $ae_error => $_[2]);
		885	});
		886	$_[0]->on_read (sub { });
		887	}
		888	}
		889	}
		890	};
		891
		892	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		893	};
		894
		895	my $connect_cb = sub {
443	$state{fh} = shift	896	$state{fh} = shift
444	or do {	897	or do {
445	my $err = "$!";	898	my $err = "$!";
446	%state = ();	899	%state = ();
447	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });	900	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
448	};	901	};
449
450	pop; # free memory, save a tree
451		902
452	return unless delete $state{connect_guard};	903	return unless delete $state{connect_guard};
453		904
454	# get handle	905	# get handle
455	$state{handle} = new AnyEvent::Handle	906	$state{handle} = new AnyEvent::Handle
456	fh => $state{fh},	907	fh => $state{fh},
		908	peername => $rhost,
		909	tls_ctx => $arg{tls_ctx},
		910	# these need to be reconfigured on keepalive handles
457	timeout => $timeout,	911	timeout => $timeout,
458	peername => $rhost,	912	on_error => sub {
459	tls_ctx => $arg{tls_ctx};	913	%state = ();
		914	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
		915	},
		916	on_eof => sub {
		917	%state = ();
		918	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
		919	},
		920	;
460		921
461	# limit the number of persistent connections	922	# limit the number of persistent connections
462	# keepalive not yet supported	923	# keepalive not yet supported
463	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	924	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
464	++$KA_COUNT{$_[1]};	925	# ++$KA_COUNT{$_[1]};
465	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	926	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
466	--$KA_COUNT{$_[1]}	927	# --$KA_COUNT{$_[1]}
467	};	928	# };
468	$hdr{connection} = "keep-alive";	929	# $hdr{connection} = "keep-alive";
469	} else {
470	delete $hdr{connection};
471	}	930	# }
472
473	# (re-)configure handle
474	$state{handle}->on_error (sub {
475	%state = ();
476	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
477	});
478	$state{handle}->on_eof (sub {
479	%state = ();
480	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
481	});
482		931
483	$state{handle}->starttls ("connect") if $rscheme eq "https";	932	$state{handle}->starttls ("connect") if $rscheme eq "https";
484
485	# handle actual, non-tunneled, request
486	my $handle_actual_request = sub {
487	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
488
489	# send request
490	$state{handle}->push_write (
491	"$method $rpath HTTP/1.0\015\012"
492	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
493	. "\015\012"
494	. (delete $arg{body})
495	);
496
497	%hdr = (); # reduce memory usage, save a kitten
498
499	# status line
500	$state{handle}->push_read (line => $qr_nl, sub {
501	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
502	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
503
504	my %hdr = ( # response headers
505	HTTPVersion => ",$1",
506	Status => ",$2",
507	Reason => ",$3",
508	URL => ",$url"
509	);
510
511	# headers, could be optimized a bit
512	$state{handle}->unshift_read (line => $qr_nlnl, sub {
513	for ("$_[1]") {
514	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
515
516	# things seen, not parsed:
517	# p3pP="NON CUR OTPi OUR NOR UNI"
518
519	$hdr{lc $1} .= ",$2"
520	while /\G
521	([^:\000-\037]*):
522	[\011\040]*
523	((?: [^\012]+ \| \012[\011\040] )*)
524	\012
525	/gxc;
526
527	/\G$/
528	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
529	}
530
531	substr $_, 0, 1, ""
532	for values %hdr;
533
534	# redirect handling
535	# microsoft and other shitheads don't give a shit for following standards,
536	# try to support some common forms of broken Location headers.
537	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
538	$hdr{location} =~ s/^\.\/+//;
539
540	my $url = "$rscheme://$uhost:$uport";
541
542	unless ($hdr{location} =~ s/^\///) {
543	$url .= $upath;
544	$url =~ s/\/[^\/]*$//;
545	}
546
547	$hdr{location} = "$url/$hdr{location}";
548	}
549
550	my $redirect;
551
552	if ($recurse) {
553	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
554	# apparently, mozilla et al. just change POST to GET here
555	# more research is needed before we do the same
556	$redirect = 1;
557	} elsif ($hdr{Status} == 303) {
558	# even http/1.1 is unclear on how to mutate the method
559	$method = "GET" unless $method eq "HEAD";
560	$redirect = 1;
561	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
562	$redirect = 1;
563	}
564	}
565
566	my $finish = sub {
567	$state{handle}->destroy if $state{handle};
568	%state = ();
569
570	# set-cookie processing
571	if ($arg{cookie_jar}) {
572	for ($_[1]{"set-cookie"}) {
573	# parse NAME=VALUE
574	my @kv;
575
576	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
577	my $name = $1;
578	my $value = $3;
579
580	unless ($value) {
581	$value = $2;
582	$value =~ s/\\(.)/$1/gs;
583	}
584
585	push @kv, $name => $value;
586
587	last unless /\G\s*;/gc;
588	}
589
590	last unless @kv;
591
592	my $name = shift @kv;
593	my %kv = (value => shift @kv, @kv);
594
595	my $cdom;
596	my $cpath = (delete $kv{path}) \|\| "/";
597
598	if (exists $kv{domain}) {
599	$cdom = delete $kv{domain};
600
601	$cdom =~ s/^\.?/./; # make sure it starts with a "."
602
603	next if $cdom =~ /\.$/;
604
605	# this is not rfc-like and not netscape-like. go figure.
606	my $ndots = $cdom =~ y/.//;
607	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
608	} else {
609	$cdom = $uhost;
610	}
611
612	# store it
613	$arg{cookie_jar}{version} = 1;
614	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
615
616	redo if /\G\s*,/gc;
617	}
618	}
619
620	if ($redirect && exists $hdr{location}) {
621	# we ignore any errors, as it is very common to receive
622	# Content-Length != 0 but no actual body
623	# we also access %hdr, as $_[1] might be an erro
624	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
625	} else {
626	$cb->($_[0], $_[1]);
627	}
628	};
629
630	my $len = $hdr{"content-length"};
631
632	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
633	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
634	} elsif (
635	$hdr{Status} =~ /^(?:1..\|[23]04)$/
636	or $method eq "HEAD"
637	or (defined $len && !$len)
638	) {
639	# no body
640	$finish->("", \%hdr);
641	} else {
642	# body handling, four different code paths
643	# for want_body_handle, on_body (2x), normal (2x)
644	# we might read too much here, but it does not matter yet (no pers. connections)
645	if (!$redirect && $arg{want_body_handle}) {
646	$_[0]->on_eof (undef);
647	$_[0]->on_error (undef);
648	$_[0]->on_read (undef);
649
650	$finish->(delete $state{handle}, \%hdr);
651
652	} elsif ($arg{on_body}) {
653	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
654	if ($len) {
655	$_[0]->on_eof (undef);
656	$_[0]->on_read (sub {
657	$len -= length $_[0]{rbuf};
658
659	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
660	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
661
662	$len > 0
663	or $finish->("", \%hdr);
664	});
665	} else {
666	$_[0]->on_eof (sub {
667	$finish->("", \%hdr);
668	});
669	$_[0]->on_read (sub {
670	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
671	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
672	});
673	}
674	} else {
675	$_[0]->on_eof (undef);
676
677	if ($len) {
678	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
679	$_[0]->on_read (sub {
680	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
681	if $len <= length $_[0]{rbuf};
682	});
683	} else {
684	$_[0]->on_error (sub {
685	$! == Errno::EPIPE \|\| !$!
686	? $finish->(delete $_[0]{rbuf}, \%hdr)
687	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
688	});
689	$_[0]->on_read (sub { });
690	}
691	}
692	}
693	});
694	});
695	};
696		933
697	# now handle proxy-CONNECT method	934	# now handle proxy-CONNECT method
698	if ($proxy && $uscheme eq "https") {	935	if ($proxy && $uscheme eq "https") {
699	# oh dear, we have to wrap it into a connect request	936	# oh dear, we have to wrap it into a connect request
700		937
701	# maybe re-use $uauthority with patched port?	938	# maybe re-use $uauthority with patched port?
702	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	939	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
703	$state{handle}->push_read (line => $qr_nlnl, sub {	940	$state{handle}->push_read (line => $qr_nlnl, sub {
704	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	941	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
705	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	942	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
706		943
707	if ($2 == 200) {	944	if ($2 == 200) {
708	$rpath = $upath;	945	$rpath = $upath;
709	&$handle_actual_request;	946	$handle_actual_request->();
710	} else {	947	} else {
711	%state = ();	948	%state = ();
712	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	949	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
713	}	950	}
714	});	951	});
715	} else {	952	} else {
716	&$handle_actual_request;	953	$handle_actual_request->();
717	}	954	}
		955	};
718		956
719	}, $arg{on_prepare} \|\| sub { $timeout };	957	my $tcp_connect = $arg{tcp_connect}
		958	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		959
		960	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
720	};	961	};
721		962
722	defined wantarray && AnyEvent::Util::guard { %state = () }	963	defined wantarray && AnyEvent::Util::guard { %state = () }
723	}	964	}
724		965
…		…
738	&http_request	979	&http_request
739	}	980	}
740		981
741	=back	982	=back
742		983
		984	=head2 DNS CACHING
		985
		986	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		987	the actual connection, which in turn uses AnyEvent::DNS to resolve
		988	hostnames. The latter is a simple stub resolver and does no caching
		989	on its own. If you want DNS caching, you currently have to provide
		990	your own default resolver (by storing a suitable resolver object in
		991	C<$AnyEvent::DNS::RESOLVER>).
		992
743	=head2 GLOBAL FUNCTIONS AND VARIABLES	993	=head2 GLOBAL FUNCTIONS AND VARIABLES
744		994
745	=over 4	995	=over 4
746		996
747	=item AnyEvent::HTTP::set_proxy "proxy-url"	997	=item AnyEvent::HTTP::set_proxy "proxy-url"
748		998
749	Sets the default proxy server to use. The proxy-url must begin with a	999	Sets the default proxy server to use. The proxy-url must begin with a
750	string of the form C<http://host:port> (optionally C<https:...>).	1000	string of the form C<http://host:port> (optionally C<https:...>), croaks
		1001	otherwise.
		1002
		1003	To clear an already-set proxy, use C<undef>.
		1004
		1005	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
		1006
		1007	Remove all cookies from the cookie jar that have been expired. If
		1008	C<$session_end> is given and true, then additionally remove all session
		1009	cookies.
		1010
		1011	You should call this function (with a true C<$session_end>) before you
		1012	save cookies to disk, and you should call this function after loading them
		1013	again. If you have a long-running program you can additonally call this
		1014	function from time to time.
		1015
		1016	A cookie jar is initially an empty hash-reference that is managed by this
		1017	module. It's format is subject to change, but currently it is like this:
		1018
		1019	The key C<version> has to contain C<1>, otherwise the hash gets
		1020	emptied. All other keys are hostnames or IP addresses pointing to
		1021	hash-references. The key for these inner hash references is the
		1022	server path for which this cookie is meant, and the values are again
		1023	hash-references. The keys of those hash-references is the cookie name, and
		1024	the value, you guessed it, is another hash-reference, this time with the
		1025	key-value pairs from the cookie, except for C<expires> and C<max-age>,
		1026	which have been replaced by a C<_expires> key that contains the cookie
		1027	expiry timestamp.
		1028
		1029	Here is an example of a cookie jar with a single cookie, so you have a
		1030	chance of understanding the above paragraph:
		1031
		1032	{
		1033	version => 1,
		1034	"10.0.0.1" => {
		1035	"/" => {
		1036	"mythweb_id" => {
		1037	_expires => 1293917923,
		1038	value => "ooRung9dThee3ooyXooM1Ohm",
		1039	},
		1040	},
		1041	},
		1042	}
		1043
		1044	=item $date = AnyEvent::HTTP::format_date $timestamp
		1045
		1046	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		1047	Date (RFC 2616).
		1048
		1049	=item $timestamp = AnyEvent::HTTP::parse_date $date
		1050
		1051	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		1052	bunch of minor variations of those, and returns the corresponding POSIX
		1053	timestamp, or C<undef> if the date cannot be parsed.
751		1054
752	=item $AnyEvent::HTTP::MAX_RECURSE	1055	=item $AnyEvent::HTTP::MAX_RECURSE
753		1056
754	The default value for the C<recurse> request parameter (default: C<10>).	1057	The default value for the C<recurse> request parameter (default: C<10>).
755		1058
…		…
775		1078
776	=back	1079	=back
777		1080
778	=cut	1081	=cut
779		1082
		1083	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1084	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1085
		1086	sub format_date($) {
		1087	my ($time) = @_;
		1088
		1089	# RFC 822/1123 format
		1090	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1091
		1092	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1093	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1094	$H, $M, $S;
		1095	}
		1096
		1097	sub parse_date($) {
		1098	my ($date) = @_;
		1099
		1100	my ($d, $m, $y, $H, $M, $S);
		1101
		1102	if ($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$/) {
		1103	# RFC 822/1123, required by RFC 2616 (with " ")
		1104	# cookie dates (with "-")
		1105
		1106	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1107
		1108	} elsif ($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$/) {
		1109	# RFC 850
		1110	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1111
		1112	} elsif ($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])$/) {
		1113	# ISO C's asctime
		1114	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1115	}
		1116	# other formats fail in the loop below
		1117
		1118	for (0..11) {
		1119	if ($m eq $month[$_]) {
		1120	require Time::Local;
		1121	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1122	}
		1123	}
		1124
		1125	undef
		1126	}
		1127
780	sub set_proxy($) {	1128	sub set_proxy($) {
		1129	if (length $_[0]) {
781	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1130	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1131	or Carp::croak "$_[0]: invalid proxy URL";
		1132	$PROXY = [$2, $3 \|\| 3128, $1]
		1133	} else {
		1134	undef $PROXY;
		1135	}
782	}	1136	}
783		1137
784	# initialise proxy from environment	1138	# initialise proxy from environment
		1139	eval {
785	set_proxy $ENV{http_proxy};	1140	set_proxy $ENV{http_proxy};
		1141	};
		1142
		1143	=head2 SOCKS PROXIES
		1144
		1145	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1146	compile your perl to support socks, or use an external program such as
		1147	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1148	transparently.
		1149
		1150	Alternatively, for AnyEvent::HTTP only, you can use your own
		1151	C<tcp_connect> function that does the proxy handshake - here is an example
		1152	that works with socks4a proxies:
		1153
		1154	use Errno;
		1155	use AnyEvent::Util;
		1156	use AnyEvent::Socket;
		1157	use AnyEvent::Handle;
		1158
		1159	# host, port and username of/for your socks4a proxy
		1160	my $socks_host = "10.0.0.23";
		1161	my $socks_port = 9050;
		1162	my $socks_user = "";
		1163
		1164	sub socks4a_connect {
		1165	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1166
		1167	my $hdl = new AnyEvent::Handle
		1168	connect => [$socks_host, $socks_port],
		1169	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1170	on_error => sub { $connect_cb->() },
		1171	;
		1172
		1173	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1174
		1175	$hdl->push_read (chunk => 8, sub {
		1176	my ($hdl, $chunk) = @_;
		1177	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1178
		1179	if ($status == 0x5a) {
		1180	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1181	} else {
		1182	$! = Errno::ENXIO; $connect_cb->();
		1183	}
		1184	});
		1185
		1186	$hdl
		1187	}
		1188
		1189	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1190	possibly after switching off other proxy types:
		1191
		1192	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1193
		1194	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1195	my ($data, $headers) = @_;
		1196	...
		1197	};
786		1198
787	=head1 SEE ALSO	1199	=head1 SEE ALSO
788		1200
789	L<AnyEvent>.	1201	L<AnyEvent>.
790		1202

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.51 by root, Fri Aug 14 15:21:33 2009 UTC vs. Revision 1.83 by root, Sun Jan 2 05:02:28 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.51 by root, Fri Aug 14 15:21:33 2009 UTC vs.
Revision 1.83 by root, Sun Jan 2 05:02:28 2011 UTC