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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs.
Revision 1.86 by root, Sun Jan 2 06:38:32 2011 UTC

…		…
36		36
37	=cut	37	=cut
38		38
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use common::sense;
42	no warnings;
43		42
44	use Errno ();	43	use Errno ();
45		44
46	use AnyEvent 5.0 ();	45	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	46	use AnyEvent::Util ();
48	use AnyEvent::Handle ();	47	use AnyEvent::Handle ();
49		48
50	use base Exporter::;	49	use base Exporter::;
51		50
52	our $VERSION = '1.46';	51	our $VERSION = '1.5';
53		52
54	our @EXPORT = qw(http_get http_post http_head http_request);	53	our @EXPORT = qw(http_get http_post http_head http_request);
55		54
56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	55	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
57	our $MAX_RECURSE = 10;	56	our $MAX_RECURSE = 10;
…		…
94	C<http_request> returns a "cancellation guard" - you have to keep the	93	C<http_request> returns a "cancellation guard" - you have to keep the
95	object at least alive until the callback get called. If the object gets	94	object at least alive until the callback get called. If the object gets
96	destroyed before the callback is called, the request will be cancelled.	95	destroyed before the callback is called, the request will be cancelled.
97		96
98	The callback will be called with the response body data as first argument	97	The callback will be called with the response body data as first argument
99	(or C<undef> if an error occured), and a hash-ref with response headers as	98	(or C<undef> if an error occured), and a hash-ref with response headers
100	second argument.	99	(and trailers) as second argument.
101		100
102	All the headers in that hash are lowercased. In addition to the response	101	All the headers in that hash are lowercased. In addition to the response
103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible	102	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the	103	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	three parts of the HTTP Status-Line of the same name.	104	three parts of the HTTP Status-Line of the same name. If an error occurs
		105	during the body phase of a request, then the original C<Status> and
		106	C<Reason> values from the header are available as C<OrigStatus> and
		107	C<OrigReason>.
106		108
107	The pseudo-header C<URL> contains the actual URL (which can differ from	109	The pseudo-header C<URL> contains the actual URL (which can differ from
108	the requested URL when following redirects - for example, you might get	110	the requested URL when following redirects - for example, you might get
109	an error that your URL scheme is not supported even though your URL is a	111	an error that your URL scheme is not supported even though your URL is a
110	valid http URL because it redirected to an ftp URL, in which case you can	112	valid http URL because it redirected to an ftp URL, in which case you can
…		…
119		121
120	If the server sends a header multiple times, then their contents will be	122	If the server sends a header multiple times, then their contents will be
121	joined together with a comma (C<,>), as per the HTTP spec.	123	joined together with a comma (C<,>), as per the HTTP spec.
122		124
123	If an internal error occurs, such as not being able to resolve a hostname,	125	If an internal error occurs, such as not being able to resolve a hostname,
124	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	126	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
125	(usually C<599>) and the C<Reason> pseudo-header will contain an error	127	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
126	message.	128	message. Currently the following status codes are used:
		129
		130	=over 4
		131
		132	=item 595 - errors during connection etsbalishment, proxy handshake.
		133
		134	=item 596 - errors during TLS negotiation, request sending and header processing.
		135
		136	=item 597 - errors during body receiving or processing.
		137
		138	=item 598 - user aborted request via C<on_header> or C<on_body>.
		139
		140	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		141
		142	=back
127		143
128	A typical callback might look like this:	144	A typical callback might look like this:
129		145
130	sub {	146	sub {
131	my ($body, $hdr) = @_;	147	my ($body, $hdr) = @_;
…		…
147	Whether to recurse requests or not, e.g. on redirects, authentication	163	Whether to recurse requests or not, e.g. on redirects, authentication
148	retries and so on, and how often to do so.	164	retries and so on, and how often to do so.
149		165
150	=item headers => hashref	166	=item headers => hashref
151		167
152	The request headers to use. Currently, C<http_request> may provide its	168	The request headers to use. Currently, C<http_request> may provide its own
153	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	169	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
154	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be	170	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
155	suppressed by using C<undef> for these headers in which case they won't be	171	(this can be suppressed by using C<undef> for these headers in which case
156	sent at all).	172	they won't be sent at all).
157		173
158	=item timeout => $seconds	174	=item timeout => $seconds
159		175
160	The time-out to use for various stages - each connect attempt will reset	176	The time-out to use for various stages - each connect attempt will reset
161	the timeout, as will read or write activity, i.e. this is not an overall	177	the timeout, as will read or write activity, i.e. this is not an overall
…		…
171	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	187	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
172	HTTPS.	188	HTTPS.
173		189
174	=item body => $string	190	=item body => $string
175		191
176	The request body, usually empty. Will be-sent as-is (future versions of	192	The request body, usually empty. Will be sent as-is (future versions of
177	this module might offer more options).	193	this module might offer more options).
178		194
179	=item cookie_jar => $hash_ref	195	=item cookie_jar => $hash_ref
180		196
181	Passing this parameter enables (simplified) cookie-processing, loosely	197	Passing this parameter enables (simplified) cookie-processing, loosely
182	based on the original netscape specification.	198	based on the original netscape specification.
183		199
184	The C<$hash_ref> must be an (initially empty) hash reference which will	200	The C<$hash_ref> must be an (initially empty) hash reference which
185	get updated automatically. It is possible to save the cookie_jar to	201	will get updated automatically. It is possible to save the cookie jar
186	persistent storage with something like JSON or Storable, but this is not	202	to persistent storage with something like JSON or Storable - see the
187	recommended, as expiry times are currently being ignored.	203	C<AnyEvent::HTTP::cookie_jar_expire> function if you wish to remove
		204	expired or session-only cookies, and also for documentation on the format
		205	of the cookie jar.
188		206
189	Note that this cookie implementation is not of very high quality, nor	207	Note that this cookie implementation is not meant to be complete. If
190	meant to be complete. If you want complete cookie management you have to	208	you want complete cookie management you have to do that on your
191	do that on your own. C<cookie_jar> is meant as a quick fix to get some	209	own. C<cookie_jar> is meant as a quick fix to get most cookie-using sites
192	cookie-using sites working. Cookies are a privacy disaster, do not use	210	working. Cookies are a privacy disaster, do not use them unless required
193	them unless required to.	211	to.
		212
		213	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		214	headers will be set and handled by this module, otherwise they will be
		215	left untouched.
194		216
195	=item tls_ctx => $scheme \| $tls_ctx	217	=item tls_ctx => $scheme \| $tls_ctx
196		218
197	Specifies the AnyEvent::TLS context to be used for https connections. This	219	Specifies the AnyEvent::TLS context to be used for https connections. This
198	parameter follows the same rules as the C<tls_ctx> parameter to	220	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
216	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)	238	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
217		239
218	In even rarer cases you want total control over how AnyEvent::HTTP	240	In even rarer cases you want total control over how AnyEvent::HTTP
219	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>	241	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
220	to do this, but you can provide your own C<tcp_connect> function -	242	to do this, but you can provide your own C<tcp_connect> function -
221	obviously, it has to follow the same calling conventions.	243	obviously, it has to follow the same calling conventions, except that it
		244	may always return a connection guard object.
222		245
223	There are probably lots of weird uses for this function, starting from	246	There are probably lots of weird uses for this function, starting from
224	tracing the hosts C<http_request> actually tries to connect, to (inexact	247	tracing the hosts C<http_request> actually tries to connect, to (inexact
225	but fast) host => IP address caching or even socks protocol support.	248	but fast) host => IP address caching or even socks protocol support.
226		249
…		…
236		259
237	This callback is useful, among other things, to quickly reject unwanted	260	This callback is useful, among other things, to quickly reject unwanted
238	content, which, if it is supposed to be rare, can be faster than first	261	content, which, if it is supposed to be rare, can be faster than first
239	doing a C<HEAD> request.	262	doing a C<HEAD> request.
240		263
		264	The downside is that cancelling the request makes it impossible to re-use
		265	the connection. Also, the C<on_header> callback will not receive any
		266	trailer (headers sent after the response body).
		267
241	Example: cancel the request unless the content-type is "text/html".	268	Example: cancel the request unless the content-type is "text/html".
242		269
243	on_header => sub {	270	on_header => sub {
244	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	271	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
245	},	272	},
…		…
251	string instead of the body data.	278	string instead of the body data.
252		279
253	It has to return either true (in which case AnyEvent::HTTP will continue),	280	It has to return either true (in which case AnyEvent::HTTP will continue),
254	or false, in which case AnyEvent::HTTP will cancel the download (and call	281	or false, in which case AnyEvent::HTTP will cancel the download (and call
255	the completion callback with an error code of C<598>).	282	the completion callback with an error code of C<598>).
		283
		284	The downside to cancelling the request is that it makes it impossible to
		285	re-use the connection.
256		286
257	This callback is useful when the data is too large to be held in memory	287	This callback is useful when the data is too large to be held in memory
258	(so the callback writes it to a file) or when only some information should	288	(so the callback writes it to a file) or when only some information should
259	be extracted, or when the body should be processed incrementally.	289	be extracted, or when the body should be processed incrementally.
260		290
…		…
286	If you think you need this, first have a look at C<on_body>, to see if	316	If you think you need this, first have a look at C<on_body>, to see if
287	that doesn't solve your problem in a better way.	317	that doesn't solve your problem in a better way.
288		318
289	=back	319	=back
290		320
291	Example: make a simple HTTP GET request for http://www.nethype.de/	321	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		322	the response body.
292		323
293	http_request GET => "http://www.nethype.de/", sub {	324	http_request GET => "http://www.nethype.de/", sub {
294	my ($body, $hdr) = @_;	325	my ($body, $hdr) = @_;
295	print "$body\n";	326	print "$body\n";
296	};	327	};
297		328
298	Example: make a HTTP HEAD request on https://www.google.com/, use a	329	Example: do a HTTP HEAD request on https://www.google.com/, use a
299	timeout of 30 seconds.	330	timeout of 30 seconds.
300		331
301	http_request	332	http_request
302	GET => "https://www.google.com",	333	GET => "https://www.google.com",
303	timeout => 30,	334	timeout => 30,
…		…
306	use Data::Dumper;	337	use Data::Dumper;
307	print Dumper $hdr;	338	print Dumper $hdr;
308	}	339	}
309	;	340	;
310		341
311	Example: make another simple HTTP GET request, but immediately try to	342	Example: do another simple HTTP GET request, but immediately try to
312	cancel it.	343	cancel it.
313		344
314	my $request = http_request GET => "http://www.nethype.de/", sub {	345	my $request = http_request GET => "http://www.nethype.de/", sub {
315	my ($body, $hdr) = @_;	346	my ($body, $hdr) = @_;
316	print "$body\n";	347	print "$body\n";
…		…
348	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	379	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
349		380
350	_slot_schedule $_[0];	381	_slot_schedule $_[0];
351	}	382	}
352		383
		384	#############################################################################
		385
		386	# expire cookies
		387	sub cookie_jar_expire($;$) {
		388	my ($jar, $session_end) = @_;
		389
		390	%$jar = () if $jar->{version} != 1;
		391
		392	my $anow = AE::now;
		393
		394	while (my ($chost, $paths) = each %$jar) {
		395	next unless ref $paths;
		396
		397	while (my ($cpath, $cookies) = each %$paths) {
		398	while (my ($cookie, $kv) = each %$cookies) {
		399	if (exists $kv->{_expires}) {
		400	delete $cookies->{$cookie}
		401	if $anow > $kv->{_expires};
		402	} elsif ($session_end) {
		403	delete $cookies->{$cookie};
		404	}
		405	}
		406
		407	delete $paths->{$cpath}
		408	unless %$cookies;
		409	}
		410
		411	delete $jar->{$chost}
		412	unless %$paths;
		413	}
		414	}
		415
		416	# extract cookies from jar
		417	sub cookie_jar_extract($$$$) {
		418	my ($jar, $uscheme, $uhost, $upath) = @_;
		419
		420	%$jar = () if $jar->{version} != 1;
		421
		422	my @cookies;
		423
		424	while (my ($chost, $paths) = each %$jar) {
		425	next unless ref $paths;
		426
		427	if ($chost =~ /^\./) {
		428	next unless $chost eq substr $uhost, -length $chost;
		429	} elsif ($chost =~ /\./) {
		430	next unless $chost eq $uhost;
		431	} else {
		432	next;
		433	}
		434
		435	while (my ($cpath, $cookies) = each %$paths) {
		436	next unless $cpath eq substr $upath, 0, length $cpath;
		437
		438	while (my ($cookie, $kv) = each %$cookies) {
		439	next if $uscheme ne "https" && exists $kv->{secure};
		440
		441	if (exists $kv->{_expires} and AE::now > $kv->{_expires}) {
		442	delete $cookies->{$cookie};
		443	next;
		444	}
		445
		446	my $value = $kv->{value};
		447
		448	if ($value =~ /[=;,[:space:]]/) {
		449	$value =~ s/([\\"])/\\$1/g;
		450	$value = "\"$value\"";
		451	}
		452
		453	push @cookies, "$cookie=$value";
		454	}
		455	}
		456	}
		457
		458	\@cookies
		459	}
		460
		461	# parse set_cookie header into jar
		462	sub cookie_jar_set_cookie($$$$) {
		463	my ($jar, $set_cookie, $uhost, $date) = @_;
		464
		465	my $anow = int AE::now;
		466	my $snow; # server-now
		467
		468	for ($set_cookie) {
		469	# parse NAME=VALUE
		470	my @kv;
		471
		472	# expires is not http-compliant in the original cookie-spec,
		473	# we support the official date format and some extensions
		474	while (
		475	m{
		476	\G\s*
		477	(?:
		478	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		479	\| ([^=;,[:space:]]+) (?: \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) ) )?
		480	)
		481	}gcxsi
		482	) {
		483	my $name = $2;
		484	my $value = $4;
		485
		486	if (defined $1) {
		487	# expires
		488	$name = "expires";
		489	$value = $1;
		490	} elsif (defined $3) {
		491	# quoted
		492	$value = $3;
		493	$value =~ s/\\(.)/$1/gs;
		494	}
		495
		496	push @kv, lc $name, $value;
		497
		498	last unless /\G\s*;/gc;
		499	}
		500
		501	last unless @kv;
		502
		503	my $name = shift @kv;
		504	my %kv = (value => shift @kv, @kv);
		505
		506	if (exists $kv{"max-age"}) {
		507	$kv{_expires} = $anow + delete $kv{"max-age"};
		508	} elsif (exists $kv{expires}) {
		509	$snow \|\|= parse_date ($date) \|\| $anow;
		510	$kv{_expires} = $anow + (parse_date (delete $kv{expires}) - $snow);
		511	} else {
		512	delete $kv{_expires};
		513	}
		514
		515	my $cdom;
		516	my $cpath = (delete $kv{path}) \|\| "/";
		517
		518	if (exists $kv{domain}) {
		519	$cdom = delete $kv{domain};
		520
		521	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		522
		523	next if $cdom =~ /\.$/;
		524
		525	# this is not rfc-like and not netscape-like. go figure.
		526	my $ndots = $cdom =~ y/.//;
		527	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		528	} else {
		529	$cdom = $uhost;
		530	}
		531
		532	# store it
		533	$jar->{version} = 1;
		534	$jar->{lc $cdom}{$cpath}{$name} = \%kv;
		535
		536	redo if /\G\s*,/gc;
		537	}
		538	}
		539
		540	# continue to parse $_ for headers and place them into the arg
		541	sub parse_hdr() {
		542	my %hdr;
		543
		544	# things seen, not parsed:
		545	# p3pP="NON CUR OTPi OUR NOR UNI"
		546
		547	$hdr{lc $1} .= ",$2"
		548	while /\G
		549	([^:\000-\037]*):
		550	[\011\040]*
		551	((?: [^\012]+ \| \012[\011\040] )*)
		552	\012
		553	/gxc;
		554
		555	/\G$/
		556	or return;
		557
		558	# remove the "," prefix we added to all headers above
		559	substr $_, 0, 1, ""
		560	for values %hdr;
		561
		562	\%hdr
		563	}
		564
353	our $qr_nlnl = qr{(?<![^\012])\015?\012};	565	our $qr_nlnl = qr{(?<![^\012])\015?\012};
354		566
355	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	567	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
356	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	568	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
357		569
…		…
376	my @pseudo = (URL => $url);	588	my @pseudo = (URL => $url);
377	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	589	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
378		590
379	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	591	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
380		592
381	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	593	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
382	if $recurse < 0;	594	if $recurse < 0;
383		595
384	my $proxy = $arg{proxy} \|\| $PROXY;	596	my $proxy = $arg{proxy} \|\| $PROXY;
385	my $timeout = $arg{timeout} \|\| $TIMEOUT;	597	my $timeout = $arg{timeout} \|\| $TIMEOUT;
386		598
…		…
389		601
390	$uscheme = lc $uscheme;	602	$uscheme = lc $uscheme;
391		603
392	my $uport = $uscheme eq "http" ? 80	604	my $uport = $uscheme eq "http" ? 80
393	: $uscheme eq "https" ? 443	605	: $uscheme eq "https" ? 443
394	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	606	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
395		607
396	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	608	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
397	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	609	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
398		610
399	my $uhost = $1;	611	my $uhost = lc $1;
400	$uport = $2 if defined $2;	612	$uport = $2 if defined $2;
401		613
402	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	614	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
403	unless exists $hdr{host};	615	unless exists $hdr{host};
404		616
…		…
407		619
408	$upath =~ s%^/?%/%;	620	$upath =~ s%^/?%/%;
409		621
410	# cookie processing	622	# cookie processing
411	if (my $jar = $arg{cookie_jar}) {	623	if (my $jar = $arg{cookie_jar}) {
412	%$jar = () if $jar->{version} != 1;	624	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
413		625
414	my @cookie;
415
416	while (my ($chost, $v) = each %$jar) {
417	if ($chost =~ /^\./) {
418	next unless $chost eq substr $uhost, -length $chost;
419	} elsif ($chost =~ /\./) {
420	next unless $chost eq $uhost;
421	} else {
422	next;
423	}
424
425	while (my ($cpath, $v) = each %$v) {
426	next unless $cpath eq substr $upath, 0, length $cpath;
427
428	while (my ($k, $v) = each %$v) {
429	next if $uscheme ne "https" && exists $v->{secure};
430	my $value = $v->{value};
431	$value =~ s/([\\"])/\\$1/g;
432	push @cookie, "$k=\"$value\"";
433	}
434	}
435	}
436
437	$hdr{cookie} = join "; ", @cookie	626	$hdr{cookie} = join "; ", @$cookies
438	if @cookie;	627	if @$cookies;
439	}	628	}
440		629
441	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	630	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
442		631
443	if ($proxy) {	632	if ($proxy) {
…		…
446	$rscheme = "http" unless defined $rscheme;	635	$rscheme = "http" unless defined $rscheme;
447		636
448	# don't support https requests over https-proxy transport,	637	# don't support https requests over https-proxy transport,
449	# can't be done with tls as spec'ed, unless you double-encrypt.	638	# can't be done with tls as spec'ed, unless you double-encrypt.
450	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	639	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
		640
		641	$rhost = lc $rhost;
		642	$rscheme = lc $rscheme;
451	} else {	643	} else {
452	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	644	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
453	}	645	}
454		646
455	# leave out fragment and query string, just a heuristic	647	# leave out fragment and query string, just a heuristic
456	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	648	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
457	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	649	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
458		650
459	$hdr{"content-length"} = length $arg{body}	651	$hdr{"content-length"} = length $arg{body}
460	if length $arg{body} \|\| $method ne "GET";	652	if length $arg{body} \|\| $method ne "GET";
461		653
		654	$hdr{connection} = "close TE"; #1.1
		655	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		656
462	my %state = (connect_guard => 1);	657	my %state = (connect_guard => 1);
463		658
464	_get_slot $uhost, sub {	659	_get_slot $uhost, sub {
465	$state{slot_guard} = shift;	660	$state{slot_guard} = shift;
466		661
467	return unless $state{connect_guard};	662	return unless $state{connect_guard};
468		663
469	my $tcp_connect = $arg{tcp_connect}	664	my $ae_error = 595; # connecting
470	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
471		665
472	$state{connect_guard} = $tcp_connect->(	666	# handle actual, non-tunneled, request
473	$rhost,	667	my $handle_actual_request = sub {
474	$rport,	668	$ae_error = 596; # request phase
475	sub {	669
476	$state{fh} = shift	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,
477	or do {	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";
478	my $err = "$!";	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};
479	%state = ();	752	%state = ();
480	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	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 = $hdr{"content-length"};
		782
		783	# body handling, many different code paths
		784	# - no body expected
		785	# - want_body_handle
		786	# - te chunked
		787	# - 2x length known (with or without on_body)
		788	# - 2x length not known (with or without on_body)
		789	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		790	$finish->(undef, 598 => "Request cancelled by on_header");
		791	} elsif (
		792	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		793	or $method eq "HEAD"
		794	or (defined $len && $len == 0) # == 0, not !, because "0 " is true
		795	) {
		796	# no body
		797	$finish->("", undef, undef, 1);
		798
		799	} elsif (!$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	}
481	};	848	};
482		849
483	pop; # free memory, save a tree	850	$_[0]->push_read (line => $state{read_chunk});
484		851
		852	} elsif ($arg{on_body}) {
		853	if (defined $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 (defined $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	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		892	};
		893
		894	my $connect_cb = sub {
		895	$state{fh} = shift
		896	or do {
		897	my $err = "$!";
		898	%state = ();
		899	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
		900	};
		901
485	return unless delete $state{connect_guard};	902	return unless delete $state{connect_guard};
486		903
487	# get handle	904	# get handle
488	$state{handle} = new AnyEvent::Handle	905	$state{handle} = new AnyEvent::Handle
489	fh => $state{fh},	906	fh => $state{fh},
490	peername => $rhost,	907	peername => $rhost,
491	tls_ctx => $arg{tls_ctx},	908	tls_ctx => $arg{tls_ctx},
492	# these need to be reconfigured on keepalive handles	909	# these need to be reconfigured on keepalive handles
493	timeout => $timeout,	910	timeout => $timeout,
494	on_error => sub {	911	on_error => sub {
495	%state = ();	912	%state = ();
496	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	913	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
497	},	914	},
498	on_eof => sub {	915	on_eof => sub {
499	%state = ();	916	%state = ();
500	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	917	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
501	},	918	},
502	;	919	;
503		920
504	# limit the number of persistent connections	921	# limit the number of persistent connections
505	# keepalive not yet supported	922	# keepalive not yet supported
506	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	923	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
507	# ++$KA_COUNT{$_[1]};	924	# ++$KA_COUNT{$_[1]};
508	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	925	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
509	# --$KA_COUNT{$_[1]}	926	# --$KA_COUNT{$_[1]}
510	# };	927	# };
511	# $hdr{connection} = "keep-alive";	928	# $hdr{connection} = "keep-alive";
512	# } else {
513	delete $hdr{connection};
514	# }	929	# }
515		930
516	$state{handle}->starttls ("connect") if $rscheme eq "https";	931	$state{handle}->starttls ("connect") if $rscheme eq "https";
517		932
518	# handle actual, non-tunneled, request
519	my $handle_actual_request = sub {
520	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
521
522	# send request
523	$state{handle}->push_write (
524	"$method $rpath HTTP/1.0\015\012"
525	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
526	. "\015\012"
527	. (delete $arg{body})
528	);
529
530	# return if error occured during push_write()
531	return unless %state;
532
533	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
534
535	# status line and headers
536	$state{handle}->push_read (line => $qr_nlnl, sub {
537	for ("$_[1]") {
538	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
539
540	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc
541	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));
542
543	push @pseudo,
544	HTTPVersion => $1,
545	Status => $2,
546	Reason => $3,
547	;
548
549	# things seen, not parsed:
550	# p3pP="NON CUR OTPi OUR NOR UNI"
551
552	$hdr{lc $1} .= ",$2"
553	while /\G
554	([^:\000-\037]*):
555	[\011\040]*
556	((?: [^\012]+ \| \012[\011\040] )*)
557	\012
558	/gxc;
559
560	/\G$/
561	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));
562	}
563
564	# remove the "," prefix we added to all headers above
565	substr $_, 0, 1, ""
566	for values %hdr;
567
568	# patch in all pseudo headers
569	%hdr = (%hdr, @pseudo);
570
571	# redirect handling
572	# microsoft and other shitheads don't give a shit for following standards,
573	# try to support some common forms of broken Location headers.
574	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
575	$hdr{location} =~ s/^\.\/+//;
576
577	my $url = "$rscheme://$uhost:$uport";
578
579	unless ($hdr{location} =~ s/^\///) {
580	$url .= $upath;
581	$url =~ s/\/[^\/]*$//;
582	}
583
584	$hdr{location} = "$url/$hdr{location}";
585	}
586
587	my $redirect;
588
589	if ($recurse) {
590	my $status = $hdr{Status};
591
592	# industry standard is to redirect POST as GET for
593	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
594	# also, the UA should ask the user for 301 and 307 and POST,
595	# industry standard seems to be to simply follow.
596	# we go with the industry standard.
597	if ($status == 301 or $status == 302 or $status == 303) {
598	# HTTP/1.1 is unclear on how to mutate the method
599	$method = "GET" unless $method eq "HEAD";
600	$redirect = 1;
601	} elsif ($status == 307) {
602	$redirect = 1;
603	}
604	}
605
606	my $finish = sub {
607	$state{handle}->destroy if $state{handle};
608	%state = ();
609
610	# set-cookie processing
611	if ($arg{cookie_jar}) {
612	for ($_[1]{"set-cookie"}) {
613	# parse NAME=VALUE
614	my @kv;
615
616	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
617	my $name = $1;
618	my $value = $3;
619
620	unless ($value) {
621	$value = $2;
622	$value =~ s/\\(.)/$1/gs;
623	}
624
625	push @kv, $name => $value;
626
627	last unless /\G\s*;/gc;
628	}
629
630	last unless @kv;
631
632	my $name = shift @kv;
633	my %kv = (value => shift @kv, @kv);
634
635	my $cdom;
636	my $cpath = (delete $kv{path}) \|\| "/";
637
638	if (exists $kv{domain}) {
639	$cdom = delete $kv{domain};
640
641	$cdom =~ s/^\.?/./; # make sure it starts with a "."
642
643	next if $cdom =~ /\.$/;
644
645	# this is not rfc-like and not netscape-like. go figure.
646	my $ndots = $cdom =~ y/.//;
647	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
648	} else {
649	$cdom = $uhost;
650	}
651
652	# store it
653	$arg{cookie_jar}{version} = 1;
654	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
655
656	redo if /\G\s*,/gc;
657	}
658	}
659
660	if ($redirect && exists $hdr{location}) {
661	# we ignore any errors, as it is very common to receive
662	# Content-Length != 0 but no actual body
663	# we also access %hdr, as $_[1] might be an erro
664	http_request (
665	$method => $hdr{location},
666	%arg,
667	recurse => $recurse - 1,
668	Redirect => \@_,
669	$cb);
670	} else {
671	$cb->($_[0], $_[1]);
672	}
673	};
674
675	my $len = $hdr{"content-length"};
676
677	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
678	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
679	} elsif (
680	$hdr{Status} =~ /^(?:1..\|[23]04)$/
681	or $method eq "HEAD"
682	or (defined $len && !$len)
683	) {
684	# no body
685	$finish->("", \%hdr);
686	} else {
687	# body handling, four different code paths
688	# for want_body_handle, on_body (2x), normal (2x)
689	# we might read too much here, but it does not matter yet (no pers. connections)
690	if (!$redirect && $arg{want_body_handle}) {
691	$_[0]->on_eof (undef);
692	$_[0]->on_error (undef);
693	$_[0]->on_read (undef);
694
695	$finish->(delete $state{handle}, \%hdr);
696
697	} elsif ($arg{on_body}) {
698	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
699	if ($len) {
700	$_[0]->on_eof (undef);
701	$_[0]->on_read (sub {
702	$len -= length $_[0]{rbuf};
703
704	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
705	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
706
707	$len > 0
708	or $finish->("", \%hdr);
709	});
710	} else {
711	$_[0]->on_eof (sub {
712	$finish->("", \%hdr);
713	});
714	$_[0]->on_read (sub {
715	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
716	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
717	});
718	}
719	} else {
720	$_[0]->on_eof (undef);
721
722	if ($len) {
723	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
724	$_[0]->on_read (sub {
725	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
726	if $len <= length $_[0]{rbuf};
727	});
728	} else {
729	$_[0]->on_error (sub {
730	($! == Errno::EPIPE \|\| !$!)
731	? $finish->(delete $_[0]{rbuf}, \%hdr)
732	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
733	});
734	$_[0]->on_read (sub { });
735	}
736	}
737	}
738	});
739	};
740
741	# now handle proxy-CONNECT method	933	# now handle proxy-CONNECT method
742	if ($proxy && $uscheme eq "https") {	934	if ($proxy && $uscheme eq "https") {
743	# oh dear, we have to wrap it into a connect request	935	# oh dear, we have to wrap it into a connect request
744		936
745	# maybe re-use $uauthority with patched port?	937	# maybe re-use $uauthority with patched port?
746	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	938	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012");
747	$state{handle}->push_read (line => $qr_nlnl, sub {	939	$state{handle}->push_read (line => $qr_nlnl, sub {
748	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	940	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
749	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));	941	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
750		942
751	if ($2 == 200) {	943	if ($2 == 200) {
752	$rpath = $upath;	944	$rpath = $upath;
753	&$handle_actual_request;	945	$handle_actual_request->();
754	} else {	946	} else {
755	%state = ();	947	%state = ();
756	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	948	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
757	}
758	});	949	}
759	} else {
760	&$handle_actual_request;
761	}	950	});
762		951	} else {
		952	$handle_actual_request->();
763	},	953	}
764	$arg{on_prepare} \|\| sub { $timeout }
765	);	954	};
		955
		956	my $tcp_connect = $arg{tcp_connect}
		957	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		958
		959	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
766	};	960	};
767		961
768	defined wantarray && AnyEvent::Util::guard { %state = () }	962	defined wantarray && AnyEvent::Util::guard { %state = () }
769	}	963	}
770		964
…		…
805	string of the form C<http://host:port> (optionally C<https:...>), croaks	999	string of the form C<http://host:port> (optionally C<https:...>), croaks
806	otherwise.	1000	otherwise.
807		1001
808	To clear an already-set proxy, use C<undef>.	1002	To clear an already-set proxy, use C<undef>.
809		1003
		1004	=item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end]
		1005
		1006	Remove all cookies from the cookie jar that have been expired. If
		1007	C<$session_end> is given and true, then additionally remove all session
		1008	cookies.
		1009
		1010	You should call this function (with a true C<$session_end>) before you
		1011	save cookies to disk, and you should call this function after loading them
		1012	again. If you have a long-running program you can additonally call this
		1013	function from time to time.
		1014
		1015	A cookie jar is initially an empty hash-reference that is managed by this
		1016	module. It's format is subject to change, but currently it is like this:
		1017
		1018	The key C<version> has to contain C<1>, otherwise the hash gets
		1019	emptied. All other keys are hostnames or IP addresses pointing to
		1020	hash-references. The key for these inner hash references is the
		1021	server path for which this cookie is meant, and the values are again
		1022	hash-references. The keys of those hash-references is the cookie name, and
		1023	the value, you guessed it, is another hash-reference, this time with the
		1024	key-value pairs from the cookie, except for C<expires> and C<max-age>,
		1025	which have been replaced by a C<_expires> key that contains the cookie
		1026	expiry timestamp.
		1027
		1028	Here is an example of a cookie jar with a single cookie, so you have a
		1029	chance of understanding the above paragraph:
		1030
		1031	{
		1032	version => 1,
		1033	"10.0.0.1" => {
		1034	"/" => {
		1035	"mythweb_id" => {
		1036	_expires => 1293917923,
		1037	value => "ooRung9dThee3ooyXooM1Ohm",
		1038	},
		1039	},
		1040	},
		1041	}
		1042
		1043	=item $date = AnyEvent::HTTP::format_date $timestamp
		1044
		1045	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		1046	Date (RFC 2616).
		1047
		1048	=item $timestamp = AnyEvent::HTTP::parse_date $date
		1049
		1050	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		1051	bunch of minor variations of those, and returns the corresponding POSIX
		1052	timestamp, or C<undef> if the date cannot be parsed.
		1053
810	=item $AnyEvent::HTTP::MAX_RECURSE	1054	=item $AnyEvent::HTTP::MAX_RECURSE
811		1055
812	The default value for the C<recurse> request parameter (default: C<10>).	1056	The default value for the C<recurse> request parameter (default: C<10>).
813		1057
814	=item $AnyEvent::HTTP::USERAGENT	1058	=item $AnyEvent::HTTP::USERAGENT
…		…
832	connections. This number of can be useful for load-leveling.	1076	connections. This number of can be useful for load-leveling.
833		1077
834	=back	1078	=back
835		1079
836	=cut	1080	=cut
		1081
		1082	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1083	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1084
		1085	sub format_date($) {
		1086	my ($time) = @_;
		1087
		1088	# RFC 822/1123 format
		1089	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1090
		1091	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1092	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1093	$H, $M, $S;
		1094	}
		1095
		1096	sub parse_date($) {
		1097	my ($date) = @_;
		1098
		1099	my ($d, $m, $y, $H, $M, $S);
		1100
		1101	if ($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$/) {
		1102	# RFC 822/1123, required by RFC 2616 (with " ")
		1103	# cookie dates (with "-")
		1104
		1105	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1106
		1107	} elsif ($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$/) {
		1108	# RFC 850
		1109	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1110
		1111	} elsif ($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])$/) {
		1112	# ISO C's asctime
		1113	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1114	}
		1115	# other formats fail in the loop below
		1116
		1117	for (0..11) {
		1118	if ($m eq $month[$_]) {
		1119	require Time::Local;
		1120	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1121	}
		1122	}
		1123
		1124	undef
		1125	}
837		1126
838	sub set_proxy($) {	1127	sub set_proxy($) {
839	if (length $_[0]) {	1128	if (length $_[0]) {
840	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1129	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
841	or Carp::croak "$_[0]: invalid proxy URL";	1130	or Carp::croak "$_[0]: invalid proxy URL";
…		…
848	# initialise proxy from environment	1137	# initialise proxy from environment
849	eval {	1138	eval {
850	set_proxy $ENV{http_proxy};	1139	set_proxy $ENV{http_proxy};
851	};	1140	};
852		1141
		1142	=head2 SOCKS PROXIES
		1143
		1144	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1145	compile your perl to support socks, or use an external program such as
		1146	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1147	transparently.
		1148
		1149	Alternatively, for AnyEvent::HTTP only, you can use your own
		1150	C<tcp_connect> function that does the proxy handshake - here is an example
		1151	that works with socks4a proxies:
		1152
		1153	use Errno;
		1154	use AnyEvent::Util;
		1155	use AnyEvent::Socket;
		1156	use AnyEvent::Handle;
		1157
		1158	# host, port and username of/for your socks4a proxy
		1159	my $socks_host = "10.0.0.23";
		1160	my $socks_port = 9050;
		1161	my $socks_user = "";
		1162
		1163	sub socks4a_connect {
		1164	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1165
		1166	my $hdl = new AnyEvent::Handle
		1167	connect => [$socks_host, $socks_port],
		1168	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1169	on_error => sub { $connect_cb->() },
		1170	;
		1171
		1172	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1173
		1174	$hdl->push_read (chunk => 8, sub {
		1175	my ($hdl, $chunk) = @_;
		1176	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1177
		1178	if ($status == 0x5a) {
		1179	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1180	} else {
		1181	$! = Errno::ENXIO; $connect_cb->();
		1182	}
		1183	});
		1184
		1185	$hdl
		1186	}
		1187
		1188	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1189	possibly after switching off other proxy types:
		1190
		1191	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1192
		1193	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1194	my ($data, $headers) = @_;
		1195	...
		1196	};
		1197
853	=head1 SEE ALSO	1198	=head1 SEE ALSO
854		1199
855	L<AnyEvent>.	1200	L<AnyEvent>.
856		1201
857	=head1 AUTHOR	1202	=head1 AUTHOR

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs. Revision 1.86 by root, Sun Jan 2 06:38:32 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs.
Revision 1.86 by root, Sun Jan 2 06:38:32 2011 UTC