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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC vs.
Revision 1.84 by root, Sun Jan 2 05:13:27 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 = '1.45';	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" (uppercase to avoid clashing with possible	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
105	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the	104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
106	three parts of the HTTP Status-Line of the same name.	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>.
107		109
108	The pseudo-header C<URL> contains the actual URL (which can differ from	110	The pseudo-header C<URL> contains the actual URL (which can differ from
109	the requested URL when following redirects - for example, you might get	111	the requested URL when following redirects - for example, you might get
110	an error that your URL scheme is not supported even though your URL is a	112	an error that your URL scheme is not supported even though your URL is a
111	valid http URL because it redirected to an ftp URL, in which case you can	113	valid http URL because it redirected to an ftp URL, in which case you can
…		…
120		122
121	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
122	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
123		125
124	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,
125	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
126	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
127	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
128		144
129	A typical callback might look like this:	145	A typical callback might look like this:
130		146
131	sub {	147	sub {
132	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
148	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
149	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
150		166
151	=item headers => hashref	167	=item headers => hashref
152		168
153	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
154	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
155	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:>
156	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
157	sent at all).	173	they won't be sent at all).
158		174
159	=item timeout => $seconds	175	=item timeout => $seconds
160		176
161	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
162	the timeout, as will read or write activity, i.e. this is not an overall	178	the timeout, as will read or write activity, i.e. this is not an overall
…		…
172	C<$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
173	HTTPS.	189	HTTPS.
174		190
175	=item body => $string	191	=item body => $string
176		192
177	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
178	this module might offer more options).	194	this module might offer more options).
179		195
180	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
181		197
182	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
183	based on the original netscape specification.	199	based on the original netscape specification.
184		200
185	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which
186	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
187	persistent storage with something like JSON or Storable, but this is not	203	to persistent storage with something like JSON or Storable - see the
188	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.
189		207
190	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
191	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
192	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
193	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
194	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.
195		217
196	=item tls_ctx => $scheme \| $tls_ctx	218	=item tls_ctx => $scheme \| $tls_ctx
197		219
198	Specifies the AnyEvent::TLS context to be used for https connections. This	220	Specifies the AnyEvent::TLS context to be used for https connections. This
199	parameter follows the same rules as the C<tls_ctx> parameter to	221	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
212	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>	234	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
213	and behaves exactly the same way (e.g. it has to provide a	235	and behaves exactly the same way (e.g. it has to provide a
214	timeout). See the description for the C<$prepare_cb> argument of	236	timeout). See the description for the C<$prepare_cb> argument of
215	C<AnyEvent::Socket::tcp_connect> for details.	237	C<AnyEvent::Socket::tcp_connect> for details.
216		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
217	=item on_header => $callback->($headers)	251	=item on_header => $callback->($headers)
218		252
219	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
220	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
221	locally-generated errors).	255	locally-generated errors).
…		…
226		260
227	This callback is useful, among other things, to quickly reject unwanted	261	This callback is useful, among other things, to quickly reject unwanted
228	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
229	doing a C<HEAD> request.	263	doing a C<HEAD> request.
230		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
231	Example: cancel the request unless the content-type is "text/html".	269	Example: cancel the request unless the content-type is "text/html".
232		270
233	on_header => sub {	271	on_header => sub {
234	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	272	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
235	},	273	},
…		…
241	string instead of the body data.	279	string instead of the body data.
242		280
243	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),
244	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
245	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.
246		287
247	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
248	(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
249	be extracted, or when the body should be processed incrementally.	290	be extracted, or when the body should be processed incrementally.
250		291
…		…
276	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
277	that doesn't solve your problem in a better way.	318	that doesn't solve your problem in a better way.
278		319
279	=back	320	=back
280		321
281	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.
282		324
283	http_request GET => "http://www.nethype.de/", sub {	325	http_request GET => "http://www.nethype.de/", sub {
284	my ($body, $hdr) = @_;	326	my ($body, $hdr) = @_;
285	print "$body\n";	327	print "$body\n";
286	};	328	};
287		329
288	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
289	timeout of 30 seconds.	331	timeout of 30 seconds.
290		332
291	http_request	333	http_request
292	GET => "https://www.google.com",	334	GET => "https://www.google.com",
293	timeout => 30,	335	timeout => 30,
…		…
296	use Data::Dumper;	338	use Data::Dumper;
297	print Dumper $hdr;	339	print Dumper $hdr;
298	}	340	}
299	;	341	;
300		342
301	Example: make another simple HTTP GET request, but immediately try to	343	Example: do another simple HTTP GET request, but immediately try to
302	cancel it.	344	cancel it.
303		345
304	my $request = http_request GET => "http://www.nethype.de/", sub {	346	my $request = http_request GET => "http://www.nethype.de/", sub {
305	my ($body, $hdr) = @_;	347	my ($body, $hdr) = @_;
306	print "$body\n";	348	print "$body\n";
…		…
338	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	380	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
339		381
340	_slot_schedule $_[0];	382	_slot_schedule $_[0];
341	}	383	}
342		384
343	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
344	our $qr_nlnl = qr{(?<![^\012])\015?\012};	568	our $qr_nlnl = qr{(?<![^\012])\015?\012};
345		569
346	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	570	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
347	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	571	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
348		572
…		…
367	my @pseudo = (URL => $url);	591	my @pseudo = (URL => $url);
368	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	592	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
369		593
370	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	594	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
371		595
372	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	596	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
373	if $recurse < 0;	597	if $recurse < 0;
374		598
375	my $proxy = $arg{proxy} \|\| $PROXY;	599	my $proxy = $arg{proxy} \|\| $PROXY;
376	my $timeout = $arg{timeout} \|\| $TIMEOUT;	600	my $timeout = $arg{timeout} \|\| $TIMEOUT;
377		601
378	my ($uscheme, $uauthority, $upath, $query, $fragment) =	602	my ($uscheme, $uauthority, $upath, $query, $fragment) =
379	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	603	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
380		604
381	$uscheme = lc $uscheme;	605	$uscheme = lc $uscheme;
382		606
383	my $uport = $uscheme eq "http" ? 80	607	my $uport = $uscheme eq "http" ? 80
384	: $uscheme eq "https" ? 443	608	: $uscheme eq "https" ? 443
385	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	609	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
386		610
387	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	611	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
388	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	612	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
389		613
390	my $uhost = $1;	614	my $uhost = $1;
391	$uport = $2 if defined $2;	615	$uport = $2 if defined $2;
392		616
393	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	617	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
394	unless exists $hdr{host};	618	unless exists $hdr{host};
395		619
396	$uhost =~ s/^\[(.*)\]$/$1/;	620	$uhost =~ s/^\[(.*)\]$/$1/;
397	$upath .= "?$query" if length $query;	621	$upath .= $query if length $query;
398		622
399	$upath =~ s%^/?%/%;	623	$upath =~ s%^/?%/%;
400		624
401	# cookie processing	625	# cookie processing
402	if (my $jar = $arg{cookie_jar}) {	626	if (my $jar = $arg{cookie_jar}) {
403	%$jar = () if $jar->{version} != 1;	627	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
404		628
405	my @cookie;
406
407	while (my ($chost, $v) = each %$jar) {
408	if ($chost =~ /^\./) {
409	next unless $chost eq substr $uhost, -length $chost;
410	} elsif ($chost =~ /\./) {
411	next unless $chost eq $uhost;
412	} else {
413	next;
414	}
415
416	while (my ($cpath, $v) = each %$v) {
417	next unless $cpath eq substr $upath, 0, length $cpath;
418
419	while (my ($k, $v) = each %$v) {
420	next if $uscheme ne "https" && exists $v->{secure};
421	my $value = $v->{value};
422	$value =~ s/([\\"])/\\$1/g;
423	push @cookie, "$k=\"$value\"";
424	}
425	}
426	}
427
428	$hdr{cookie} = join "; ", @cookie	629	$hdr{cookie} = join "; ", @$cookies
429	if @cookie;	630	if @$cookies;
430	}	631	}
431		632
432	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	633	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
433		634
434	if ($proxy) {	635	if ($proxy) {
…		…
442	} else {	643	} else {
443	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	644	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
444	}	645	}
445		646
446	# leave out fragment and query string, just a heuristic	647	# leave out fragment and query string, just a heuristic
447	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	648	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
448	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	649	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
449		650
450	$hdr{"content-length"} = length $arg{body}	651	$hdr{"content-length"} = length $arg{body}
451	if length $arg{body} \|\| $method ne "GET";	652	if length $arg{body} \|\| $method ne "GET";
452		653
		654	$hdr{connection} = "close TE"; #1.1
		655	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		656
453	my %state = (connect_guard => 1);	657	my %state = (connect_guard => 1);
454		658
455	_get_slot $uhost, sub {	659	_get_slot $uhost, sub {
456	$state{slot_guard} = shift;	660	$state{slot_guard} = shift;
457		661
458	return unless $state{connect_guard};	662	return unless $state{connect_guard};
459		663
460	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	664	my $ae_error = 595; # connecting
461	$state{fh} = shift
462	or do {
463	my $err = "$!";
464	%state = ();
465	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });
466	};
467		665
468	pop; # free memory, save a tree
469
470	return unless delete $state{connect_guard};
471
472	# get handle
473	$state{handle} = new AnyEvent::Handle
474	fh => $state{fh},
475	timeout => $timeout,
476	peername => $rhost,
477	tls_ctx => $arg{tls_ctx};
478
479	# limit the number of persistent connections
480	# keepalive not yet supported
481	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
482	++$KA_COUNT{$_[1]};
483	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
484	--$KA_COUNT{$_[1]}
485	};
486	$hdr{connection} = "keep-alive";
487	} else {
488	delete $hdr{connection};
489	}
490
491	# (re-)configure handle
492	$state{handle}->on_error (sub {
493	%state = ();
494	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });
495	});
496	$state{handle}->on_eof (sub {
497	%state = ();
498	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });
499	});
500
501	$state{handle}->starttls ("connect") if $rscheme eq "https";
502
503	# handle actual, non-tunneled, request	666	# handle actual, non-tunneled, request
504	my $handle_actual_request = sub {	667	my $handle_actual_request = sub {
		668	$ae_error = 596; # request phase
		669
505	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	670	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
506		671
507	# send request	672	# send request
508	$state{handle}->push_write (	673	$state{handle}->push_write (
509	"$method $rpath HTTP/1.0\015\012"	674	"$method $rpath HTTP/1.1\015\012"
510	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	675	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
511	. "\015\012"	676	. "\015\012"
512	. (delete $arg{body})	677	. (delete $arg{body})
513	);	678	);
514		679
515	# return if error occured during push_write()	680	# return if error occured during push_write()
516	return unless %state;	681	return unless %state;
517		682
518	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	683	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
519		684
520	# status line	685	# status line and headers
521	$state{handle}->push_read (line => $qr_nl, sub {	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
522	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	690	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
523	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", @pseudo }));	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;
524		700
525	push @pseudo,	701	push @pseudo,
526	HTTPVersion => $1,	702	HTTPVersion => $1,
527	Status => $2,	703	Status => $2,
528	Reason => $3,	704	Reason => $3,
529	;	705	;
530		706
531	# headers, could be optimized a bit	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	warn "no content $redirect x<$len>$hdr{Status}\n";#d#
		783
		784	# body handling, many different code paths
		785	# - no body expected
		786	# - want_body_handle
		787	# - te chunked
		788	# - 2x length known (with or without on_body)
		789	# - 2x length not known (with or without on_body)
		790	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		791	$finish->(undef, 598 => "Request cancelled by on_header");
		792	} elsif (
		793	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		794	or $method eq "HEAD"
		795	or (defined $len && $len == 0) # == 0, not !, because "0 " is true
		796	) {
		797	# no body
		798	$finish->("", undef, undef, 1);
		799
		800	} elsif (!$redirect && $arg{want_body_handle}) {
		801	$_[0]->on_eof (undef);
		802	$_[0]->on_error (undef);
		803	$_[0]->on_read (undef);
		804
		805	$finish->(delete $state{handle});
		806
		807	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		808	my $cl = 0;
		809	my $body = undef;
		810	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		811
		812	$state{read_chunk} = sub {
		813	$_[1] =~ /^([0-9a-fA-F]+)/
		814	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		815
		816	my $len = hex $1;
		817
		818	if ($len) {
		819	$cl += $len;
		820
		821	$_[0]->push_read (chunk => $len, sub {
		822	$on_body->($_[1], \%hdr)
		823	or return $finish->(undef, 598 => "Request cancelled by on_body");
		824
		825	$_[0]->push_read (line => sub {
		826	length $_[1]
		827	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		828	$_[0]->push_read (line => $state{read_chunk});
		829	});
		830	});
		831	} else {
		832	$hdr{"content-length"} \|\|= $cl;
		833
532	$state{handle}->unshift_read (line => $qr_nlnl, sub {	834	$_[0]->push_read (line => $qr_nlnl, sub {
		835	if (length $_[1]) {
533	for ("$_[1]") {	836	for ("$_[1]") {
534	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	837	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
535		838
536	# things seen, not parsed:	839	my $hdr = parse_hdr
537	# p3pP="NON CUR OTPi OUR NOR UNI"	840	or return $finish->(undef, $ae_error => "Garbled response trailers");
538		841
539	$hdr{lc $1} .= ",$2"	842	%hdr = (%hdr, %$hdr);
540	while /\G
541	([^:\000-\037]*):
542	[\011\040]*
543	((?: [^\012]+ \| \012[\011\040] )*)
544	\012
545	/gxc;	843	}
		844	}
546		845
		846	$finish->($body, undef, undef, 1);
547	/\G$/	847	});
548	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));
549	}	848	}
550
551	# remove the "," prefix we added to all headers above
552	substr $_, 0, 1, ""
553	for values %hdr;
554
555	# patch in all pseudo headers
556	%hdr = (%hdr, @pseudo);
557
558	# redirect handling
559	# microsoft and other shitheads don't give a shit for following standards,
560	# try to support some common forms of broken Location headers.
561	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
562	$hdr{location} =~ s/^\.\/+//;
563
564	my $url = "$rscheme://$uhost:$uport";
565
566	unless ($hdr{location} =~ s/^\///) {
567	$url .= $upath;
568	$url =~ s/\/[^\/]*$//;
569	}
570
571	$hdr{location} = "$url/$hdr{location}";
572	}	849	};
573		850
574	my $redirect;	851	$_[0]->push_read (line => $state{read_chunk});
575		852
576	if ($recurse) {	853	} elsif ($arg{on_body}) {
577	my $status = $hdr{Status};	854	if (defined $len) {
		855	$_[0]->on_read (sub {
		856	$len -= length $_[0]{rbuf};
578		857
579	if (($status == 301 \|\| $status == 302) && $method ne "POST") {	858	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
580	# apparently, mozilla et al. just change POST to GET here	859	or return $finish->(undef, 598 => "Request cancelled by on_body");
581	# more research is needed before we do the same	860
582	$redirect = 1;
583	} elsif ($status == 303) {
584	# even http/1.1 is unclear on how to mutate the method
585	$method = "GET" unless $method eq "HEAD";
586	$redirect = 1;
587	} elsif ($status == 307 && $method =~ /^(?:GET\|HEAD)$/) {
588	$redirect = 1;
589	}	861	$len > 0
590	}	862	or $finish->("", undef, undef, 1);
591
592	my $finish = sub {
593	$state{handle}->destroy if $state{handle};
594	%state = ();
595
596	# set-cookie processing
597	if ($arg{cookie_jar}) {
598	for ($_[1]{"set-cookie"}) {
599	# parse NAME=VALUE
600	my @kv;
601
602	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
603	my $name = $1;
604	my $value = $3;
605
606	unless ($value) {
607	$value = $2;
608	$value =~ s/\\(.)/$1/gs;
609	}
610
611	push @kv, $name => $value;
612
613	last unless /\G\s*;/gc;
614	}
615
616	last unless @kv;
617
618	my $name = shift @kv;
619	my %kv = (value => shift @kv, @kv);
620
621	my $cdom;
622	my $cpath = (delete $kv{path}) \|\| "/";
623
624	if (exists $kv{domain}) {
625	$cdom = delete $kv{domain};
626
627	$cdom =~ s/^\.?/./; # make sure it starts with a "."
628
629	next if $cdom =~ /\.$/;
630
631	# this is not rfc-like and not netscape-like. go figure.
632	my $ndots = $cdom =~ y/.//;
633	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
634	} else {
635	$cdom = $uhost;
636	}
637
638	# store it
639	$arg{cookie_jar}{version} = 1;
640	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
641
642	redo if /\G\s*,/gc;
643	}
644	}
645
646	if ($redirect && exists $hdr{location}) {
647	# we ignore any errors, as it is very common to receive
648	# Content-Length != 0 but no actual body
649	# we also access %hdr, as $_[1] might be an erro
650	http_request (
651	$method => $hdr{location},
652	%arg,
653	recurse => $recurse - 1,
654	Redirect => \@_,
655	$cb);
656	} else {
657	$cb->($_[0], $_[1]);
658	}
659	};	863	});
660
661	my $len = $hdr{"content-length"};
662
663	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
664	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
665	} elsif (
666	$hdr{Status} =~ /^(?:1..\|[23]04)$/
667	or $method eq "HEAD"
668	or (defined $len && !$len)
669	) {
670	# no body
671	$finish->("", \%hdr);
672	} else {	864	} else {
673	# body handling, four different code paths
674	# for want_body_handle, on_body (2x), normal (2x)
675	# we might read too much here, but it does not matter yet (no pers. connections)
676	if (!$redirect && $arg{want_body_handle}) {
677	$_[0]->on_eof (undef);
678	$_[0]->on_error (undef);
679	$_[0]->on_read (undef);
680
681	$finish->(delete $state{handle}, \%hdr);
682
683	} elsif ($arg{on_body}) {
684	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
685	if ($len) {
686	$_[0]->on_eof (undef);
687	$_[0]->on_read (sub {
688	$len -= length $_[0]{rbuf};
689
690	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
691	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
692
693	$len > 0
694	or $finish->("", \%hdr);
695	});
696	} else {
697	$_[0]->on_eof (sub {	865	$_[0]->on_eof (sub {
698	$finish->("", \%hdr);	866	$finish->("");
699	});
700	$_[0]->on_read (sub {
701	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
702	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
703	});
704	}
705	} else {
706	$_[0]->on_eof (undef);
707
708	if ($len) {
709	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
710	$_[0]->on_read (sub {
711	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
712	if $len <= length $_[0]{rbuf};
713	});
714	} else {
715	$_[0]->on_error (sub {
716	$! == Errno::EPIPE \|\| !$!
717	? $finish->(delete $_[0]{rbuf}, \%hdr)
718	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
719	});
720	$_[0]->on_read (sub { });
721	}
722	}
723	}	867	});
		868	$_[0]->on_read (sub {
		869	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		870	or $finish->(undef, 598 => "Request cancelled by on_body");
		871	});
724	});	872	}
		873	} else {
		874	$_[0]->on_eof (undef);
		875
		876	if (defined $len) {
		877	$_[0]->on_read (sub {
		878	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		879	if $len <= length $_[0]{rbuf};
		880	});
		881	} else {
		882	$_[0]->on_error (sub {
		883	($! == Errno::EPIPE \|\| !$!)
		884	? $finish->(delete $_[0]{rbuf})
		885	: $finish->(undef, $ae_error => $_[2]);
		886	});
		887	$_[0]->on_read (sub { });
		888	}
725	});	889	}
726	};	890	};
		891
		892	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		893	};
		894
		895	my $connect_cb = sub {
		896	$state{fh} = shift
		897	or do {
		898	my $err = "$!";
		899	%state = ();
		900	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
		901	};
		902
		903	return unless delete $state{connect_guard};
		904
		905	# get handle
		906	$state{handle} = new AnyEvent::Handle
		907	fh => $state{fh},
		908	peername => $rhost,
		909	tls_ctx => $arg{tls_ctx},
		910	# these need to be reconfigured on keepalive handles
		911	timeout => $timeout,
		912	on_error => sub {
		913	%state = ();
		914	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
		915	},
		916	on_eof => sub {
		917	%state = ();
		918	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
		919	},
		920	;
		921
		922	# limit the number of persistent connections
		923	# keepalive not yet supported
		924	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
		925	# ++$KA_COUNT{$_[1]};
		926	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		927	# --$KA_COUNT{$_[1]}
		928	# };
		929	# $hdr{connection} = "keep-alive";
		930	# }
		931
		932	$state{handle}->starttls ("connect") if $rscheme eq "https";
727		933
728	# now handle proxy-CONNECT method	934	# now handle proxy-CONNECT method
729	if ($proxy && $uscheme eq "https") {	935	if ($proxy && $uscheme eq "https") {
730	# oh dear, we have to wrap it into a connect request	936	# oh dear, we have to wrap it into a connect request
731		937
732	# maybe re-use $uauthority with patched port?	938	# maybe re-use $uauthority with patched port?
733	$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");
734	$state{handle}->push_read (line => $qr_nlnl, sub {	940	$state{handle}->push_read (line => $qr_nlnl, sub {
735	$_[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
736	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));	942	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
737		943
738	if ($2 == 200) {	944	if ($2 == 200) {
739	$rpath = $upath;	945	$rpath = $upath;
740	&$handle_actual_request;	946	$handle_actual_request->();
741	} else {	947	} else {
742	%state = ();	948	%state = ();
743	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	949	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
744	}	950	}
745	});	951	});
746	} else {	952	} else {
747	&$handle_actual_request;	953	$handle_actual_request->();
748	}	954	}
		955	};
749		956
750	}, $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 });
751	};	961	};
752		962
753	defined wantarray && AnyEvent::Util::guard { %state = () }	963	defined wantarray && AnyEvent::Util::guard { %state = () }
754	}	964	}
755		965
…		…
790	string of the form C<http://host:port> (optionally C<https:...>), croaks	1000	string of the form C<http://host:port> (optionally C<https:...>), croaks
791	otherwise.	1001	otherwise.
792		1002
793	To clear an already-set proxy, use C<undef>.	1003	To clear an already-set proxy, use C<undef>.
794		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.
		1054
795	=item $AnyEvent::HTTP::MAX_RECURSE	1055	=item $AnyEvent::HTTP::MAX_RECURSE
796		1056
797	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>).
798		1058
799	=item $AnyEvent::HTTP::USERAGENT	1059	=item $AnyEvent::HTTP::USERAGENT
…		…
817	connections. This number of can be useful for load-leveling.	1077	connections. This number of can be useful for load-leveling.
818		1078
819	=back	1079	=back
820		1080
821	=cut	1081	=cut
		1082
		1083	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1084	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1085
		1086	sub format_date($) {
		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, $_, $y);
		1122	}
		1123	}
		1124
		1125	undef
		1126	}
822		1127
823	sub set_proxy($) {	1128	sub set_proxy($) {
824	if (length $_[0]) {	1129	if (length $_[0]) {
825	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1130	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
826	or Carp::croak "$_[0]: invalid proxy URL";	1131	or Carp::croak "$_[0]: invalid proxy URL";
…		…
833	# initialise proxy from environment	1138	# initialise proxy from environment
834	eval {	1139	eval {
835	set_proxy $ENV{http_proxy};	1140	set_proxy $ENV{http_proxy};
836	};	1141	};
837		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	};
		1198
838	=head1 SEE ALSO	1199	=head1 SEE ALSO
839		1200
840	L<AnyEvent>.	1201	L<AnyEvent>.
841		1202
842	=head1 AUTHOR	1203	=head1 AUTHOR

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC vs. Revision 1.84 by root, Sun Jan 2 05:13:27 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC vs.
Revision 1.84 by root, Sun Jan 2 05:13:27 2011 UTC