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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.52 by root, Sat Sep 26 10:13:12 2009 UTC vs.
Revision 1.78 by root, Sat Jan 1 19:32:41 2011 UTC

…		…
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 5.0 ();	46	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Socket ();
49	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
50		49
51	use base Exporter::;	50	use base Exporter::;
52		51
53	our $VERSION = '1.43';	52	our $VERSION = '1.5';
54		53
55	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
56		55
57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
…		…
92	must be an absolute http or https URL.	91	must be an absolute http or https URL.
93		92
94	When called in void context, nothing is returned. In other contexts,	93	When called in void context, nothing is returned. In other contexts,
95	C<http_request> returns a "cancellation guard" - you have to keep the	94	C<http_request> returns a "cancellation guard" - you have to keep the
96	object at least alive until the callback get called. If the object gets	95	object at least alive until the callback get called. If the object gets
97	destroyed before the callbakc is called, the request will be cancelled.	96	destroyed before the callback is called, the request will be cancelled.
98		97
99	The callback will be called with the response body data as first argument	98	The callback will be called with the response body data as first argument
100	(or C<undef> if an error occured), and a hash-ref with response headers as	99	(or C<undef> if an error occured), and a hash-ref with response headers
101	second argument.	100	(and trailers) as second argument.
102		101
103	All the headers in that hash are lowercased. In addition to the response	102	All the headers in that hash are lowercased. In addition to the response
104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	contain the three parts of the HTTP Status-Line of the same name. The	105	three parts of the HTTP Status-Line of the same name. If an error occurs
		106	during the body phase of a request, then the original C<Status> and
		107	C<Reason> values from the header are available as C<OrigStatus> and
		108	C<OrigReason>.
		109
106	pseudo-header C<URL> contains the original URL (which can differ from the	110	The pseudo-header C<URL> contains the actual URL (which can differ from
107	requested URL when following redirects).	111	the requested URL when following redirects - for example, you might get
		112	an error that your URL scheme is not supported even though your URL is a
		113	valid http URL because it redirected to an ftp URL, in which case you can
		114	look at the URL pseudo header).
		115
		116	The pseudo-header C<Redirect> only exists when the request was a result
		117	of an internal redirect. In that case it is an array reference with
		118	the C<($data, $headers)> from the redirect response. Note that this
		119	response could in turn be the result of a redirect itself, and C<<
		120	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
108		122
109	If the server sends a header multiple times, then their contents will be	123	If the server sends a header multiple times, then their contents will be
110	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
111		125
112	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
114	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
115	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
116		144
117	A typical callback might look like this:	145	A typical callback might look like this:
118		146
119	sub {	147	sub {
120	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
136	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
137	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
138		166
139	=item headers => hashref	167	=item headers => hashref
140		168
141	The request headers to use. Currently, C<http_request> may provide its	169	The request headers to use. Currently, C<http_request> may provide its own
142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
143	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
144	suppressed by using C<undef> for these headers in which case they won't be	172	(this can be suppressed by using C<undef> for these headers in which case
145	sent at all).	173	they won't be sent at all).
146		174
147	=item timeout => $seconds	175	=item timeout => $seconds
148		176
149	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
150	the timeout, as will read or write activity, i.e. this is not an overall	178	the timeout, as will read or write activity, i.e. this is not an overall
…		…
160	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
161	HTTPS.	189	HTTPS.
162		190
163	=item body => $string	191	=item body => $string
164		192
165	The request body, usually empty. Will be-sent as-is (future versions of	193	The request body, usually empty. Will be sent as-is (future versions of
166	this module might offer more options).	194	this module might offer more options).
167		195
168	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
169		197
170	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
171	based on the original netscape specification.	199	based on the original netscape specification.
172		200
173	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which will
174	get updated automatically. It is possible to save the cookie_jar to	202	get updated automatically. It is possible to save the cookie jar to
175	persistent storage with something like JSON or Storable, but this is not	203	persistent storage with something like JSON or Storable, but this is not
176	recommended, as expiry times are currently being ignored.	204	recommended, as session-only cookies might survive longer than expected.
177		205
178	Note that this cookie implementation is not of very high quality, nor	206	Note that this cookie implementation is not meant to be complete. If
179	meant to be complete. If you want complete cookie management you have to	207	you want complete cookie management you have to do that on your
180	do that on your own. C<cookie_jar> is meant as a quick fix to get some	208	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
181	cookie-using sites working. Cookies are a privacy disaster, do not use	209	working. Cookies are a privacy disaster, do not use them unless required
182	them unless required to.	210	to.
		211
		212	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		213	headers will be set and handled by this module, otherwise they will be
		214	left untouched.
183		215
184	=item tls_ctx => $scheme \| $tls_ctx	216	=item tls_ctx => $scheme \| $tls_ctx
185		217
186	Specifies the AnyEvent::TLS context to be used for https connections. This	218	Specifies the AnyEvent::TLS context to be used for https connections. This
187	parameter follows the same rules as the C<tls_ctx> parameter to	219	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
200	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>	232	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
201	and behaves exactly the same way (e.g. it has to provide a	233	and behaves exactly the same way (e.g. it has to provide a
202	timeout). See the description for the C<$prepare_cb> argument of	234	timeout). See the description for the C<$prepare_cb> argument of
203	C<AnyEvent::Socket::tcp_connect> for details.	235	C<AnyEvent::Socket::tcp_connect> for details.
204		236
		237	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		238
		239	In even rarer cases you want total control over how AnyEvent::HTTP
		240	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		241	to do this, but you can provide your own C<tcp_connect> function -
		242	obviously, it has to follow the same calling conventions, except that it
		243	may always return a connection guard object.
		244
		245	There are probably lots of weird uses for this function, starting from
		246	tracing the hosts C<http_request> actually tries to connect, to (inexact
		247	but fast) host => IP address caching or even socks protocol support.
		248
205	=item on_header => $callback->($headers)	249	=item on_header => $callback->($headers)
206		250
207	When specified, this callback will be called with the header hash as soon	251	When specified, this callback will be called with the header hash as soon
208	as headers have been successfully received from the remote server (not on	252	as headers have been successfully received from the remote server (not on
209	locally-generated errors).	253	locally-generated errors).
…		…
214		258
215	This callback is useful, among other things, to quickly reject unwanted	259	This callback is useful, among other things, to quickly reject unwanted
216	content, which, if it is supposed to be rare, can be faster than first	260	content, which, if it is supposed to be rare, can be faster than first
217	doing a C<HEAD> request.	261	doing a C<HEAD> request.
218		262
		263	The downside is that cancelling the request makes it impossible to re-use
		264	the connection. Also, the C<on_header> callback will not receive any
		265	trailer (headers sent after the response body).
		266
219	Example: cancel the request unless the content-type is "text/html".	267	Example: cancel the request unless the content-type is "text/html".
220		268
221	on_header => sub {	269	on_header => sub {
222	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	270	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
223	},	271	},
…		…
229	string instead of the body data.	277	string instead of the body data.
230		278
231	It has to return either true (in which case AnyEvent::HTTP will continue),	279	It has to return either true (in which case AnyEvent::HTTP will continue),
232	or false, in which case AnyEvent::HTTP will cancel the download (and call	280	or false, in which case AnyEvent::HTTP will cancel the download (and call
233	the completion callback with an error code of C<598>).	281	the completion callback with an error code of C<598>).
		282
		283	The downside to cancelling the request is that it makes it impossible to
		284	re-use the connection.
234		285
235	This callback is useful when the data is too large to be held in memory	286	This callback is useful when the data is too large to be held in memory
236	(so the callback writes it to a file) or when only some information should	287	(so the callback writes it to a file) or when only some information should
237	be extracted, or when the body should be processed incrementally.	288	be extracted, or when the body should be processed incrementally.
238		289
…		…
264	If you think you need this, first have a look at C<on_body>, to see if	315	If you think you need this, first have a look at C<on_body>, to see if
265	that doesn't solve your problem in a better way.	316	that doesn't solve your problem in a better way.
266		317
267	=back	318	=back
268		319
269	Example: make a simple HTTP GET request for http://www.nethype.de/	320	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		321	the response body.
270		322
271	http_request GET => "http://www.nethype.de/", sub {	323	http_request GET => "http://www.nethype.de/", sub {
272	my ($body, $hdr) = @_;	324	my ($body, $hdr) = @_;
273	print "$body\n";	325	print "$body\n";
274	};	326	};
275		327
276	Example: make a HTTP HEAD request on https://www.google.com/, use a	328	Example: do a HTTP HEAD request on https://www.google.com/, use a
277	timeout of 30 seconds.	329	timeout of 30 seconds.
278		330
279	http_request	331	http_request
280	GET => "https://www.google.com",	332	GET => "https://www.google.com",
281	timeout => 30,	333	timeout => 30,
…		…
284	use Data::Dumper;	336	use Data::Dumper;
285	print Dumper $hdr;	337	print Dumper $hdr;
286	}	338	}
287	;	339	;
288		340
289	Example: make another simple HTTP GET request, but immediately try to	341	Example: do another simple HTTP GET request, but immediately try to
290	cancel it.	342	cancel it.
291		343
292	my $request = http_request GET => "http://www.nethype.de/", sub {	344	my $request = http_request GET => "http://www.nethype.de/", sub {
293	my ($body, $hdr) = @_;	345	my ($body, $hdr) = @_;
294	print "$body\n";	346	print "$body\n";
…		…
326	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	378	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
327		379
328	_slot_schedule $_[0];	380	_slot_schedule $_[0];
329	}	381	}
330		382
331	our $qr_nl = qr{\015?\012};	383	# extract cookies from jar
		384	sub cookie_jar_extract($$$$) {
		385	my ($jar, $uscheme, $uhost, $upath) = @_;
		386
		387	%$jar = () if $jar->{version} != 1;
		388
		389	my @cookies;
		390
		391	while (my ($chost, $paths) = each %$jar) {
		392	next unless ref $paths;
		393
		394	if ($chost =~ /^\./) {
		395	next unless $chost eq substr $uhost, -length $chost;
		396	} elsif ($chost =~ /\./) {
		397	next unless $chost eq $uhost;
		398	} else {
		399	next;
		400	}
		401
		402	while (my ($cpath, $cookies) = each %$paths) {
		403	next unless $cpath eq substr $upath, 0, length $cpath;
		404
		405	while (my ($cookie, $kv) = each %$cookies) {
		406	next if $uscheme ne "https" && exists $kv->{secure};
		407
		408	if (exists $kv->{expires}) {
		409	if (AE::now > parse_date ($kv->{expires})) {
		410	delete $cookies->{$cookie};
		411	next;
		412	}
		413	}
		414
		415	my $value = $kv->{value};
		416
		417	if ($value =~ /[=;,[:space:]]/) {
		418	$value =~ s/([\\"])/\\$1/g;
		419	$value = "\"$value\"";
		420	}
		421
		422	push @cookies, "$cookie=$value";
		423	}
		424	}
		425	}
		426
		427	\@cookies
		428	}
		429
		430	# parse set_cookie header into jar
		431	sub cookie_jar_set_cookie($$$) {
		432	my ($jar, $set_cookie, $uhost) = @_;
		433
		434	for ($set_cookie) {
		435	# parse NAME=VALUE
		436	my @kv;
		437
		438	while (
		439	m{
		440	\G\s*
		441	(?:
		442	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
		443	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		444	)
		445	}gcxsi
		446	) {
		447	my $name = $2;
		448	my $value = $4;
		449
		450	unless (defined $name) {
		451	# expires
		452	$name = "expires";
		453	$value = $1;
		454	} elsif (!defined $value) {
		455	# quoted
		456	$value = $3;
		457	$value =~ s/\\(.)/$1/gs;
		458	}
		459
		460	push @kv, lc $name, $value;
		461
		462	last unless /\G\s*;/gc;
		463	}
		464
		465	last unless @kv;
		466
		467	my $name = shift @kv;
		468	my %kv = (value => shift @kv, @kv);
		469
		470	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		471	if exists $kv{"max-age"};
		472
		473	my $cdom;
		474	my $cpath = (delete $kv{path}) \|\| "/";
		475
		476	if (exists $kv{domain}) {
		477	$cdom = delete $kv{domain};
		478
		479	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		480
		481	next if $cdom =~ /\.$/;
		482
		483	# this is not rfc-like and not netscape-like. go figure.
		484	my $ndots = $cdom =~ y/.//;
		485	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		486	} else {
		487	$cdom = $uhost;
		488	}
		489
		490	# store it
		491	$jar->{version} = 1;
		492	$jar->{$cdom}{$cpath}{$name} = \%kv;
		493
		494	redo if /\G\s*,/gc;
		495	}
		496	}
		497
		498	# continue to parse $_ for headers and place them into the arg
		499	sub parse_hdr() {
		500	my %hdr;
		501
		502	# things seen, not parsed:
		503	# p3pP="NON CUR OTPi OUR NOR UNI"
		504
		505	$hdr{lc $1} .= ",$2"
		506	while /\G
		507	([^:\000-\037]*):
		508	[\011\040]*
		509	((?: [^\012]+ \| \012[\011\040] )*)
		510	\012
		511	/gxc;
		512
		513	/\G$/
		514	or return;
		515
		516	# remove the "," prefix we added to all headers above
		517	substr $_, 0, 1, ""
		518	for values %hdr;
		519
		520	\%hdr
		521	}
		522
332	our $qr_nlnl = qr{(?<![^\012])\015?\012};	523	our $qr_nlnl = qr{(?<![^\012])\015?\012};
333		524
334	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	525	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
335	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	526	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
336		527
…		…
349	while (my ($k, $v) = each %$hdr) {	540	while (my ($k, $v) = each %$hdr) {
350	$hdr{lc $k} = $v;	541	$hdr{lc $k} = $v;
351	}	542	}
352	}	543	}
353		544
		545	# pseudo headers for all subsequent responses
		546	my @pseudo = (URL => $url);
		547	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		548
354	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	549	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
355		550
356	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	551	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
357	if $recurse < 0;	552	if $recurse < 0;
358		553
359	my $proxy = $arg{proxy} \|\| $PROXY;	554	my $proxy = $arg{proxy} \|\| $PROXY;
360	my $timeout = $arg{timeout} \|\| $TIMEOUT;	555	my $timeout = $arg{timeout} \|\| $TIMEOUT;
361		556
362	my ($uscheme, $uauthority, $upath, $query, $fragment) =	557	my ($uscheme, $uauthority, $upath, $query, $fragment) =
363	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	558	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
364		559
365	$uscheme = lc $uscheme;	560	$uscheme = lc $uscheme;
366		561
367	my $uport = $uscheme eq "http" ? 80	562	my $uport = $uscheme eq "http" ? 80
368	: $uscheme eq "https" ? 443	563	: $uscheme eq "https" ? 443
369	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });	564	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
370		565
371	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	566	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
372	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	567	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
373		568
374	my $uhost = $1;	569	my $uhost = $1;
375	$uport = $2 if defined $2;	570	$uport = $2 if defined $2;
376		571
377	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";	572	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		573	unless exists $hdr{host};
378		574
379	$uhost =~ s/^\[(.*)\]$/$1/;	575	$uhost =~ s/^\[(.*)\]$/$1/;
380	$upath .= "?$query" if length $query;	576	$upath .= $query if length $query;
381		577
382	$upath =~ s%^/?%/%;	578	$upath =~ s%^/?%/%;
383		579
384	# cookie processing	580	# cookie processing
385	if (my $jar = $arg{cookie_jar}) {	581	if (my $jar = $arg{cookie_jar}) {
386	%$jar = () if $jar->{version} != 1;	582	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
387		583
388	my @cookie;
389
390	while (my ($chost, $v) = each %$jar) {
391	if ($chost =~ /^\./) {
392	next unless $chost eq substr $uhost, -length $chost;
393	} elsif ($chost =~ /\./) {
394	next unless $chost eq $uhost;
395	} else {
396	next;
397	}
398
399	while (my ($cpath, $v) = each %$v) {
400	next unless $cpath eq substr $upath, 0, length $cpath;
401
402	while (my ($k, $v) = each %$v) {
403	next if $uscheme ne "https" && exists $v->{secure};
404	my $value = $v->{value};
405	$value =~ s/([\\"])/\\$1/g;
406	push @cookie, "$k=\"$value\"";
407	}
408	}
409	}
410
411	$hdr{cookie} = join "; ", @cookie	584	$hdr{cookie} = join "; ", @$cookies
412	if @cookie;	585	if @$cookies;
413	}	586	}
414		587
415	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	588	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
416		589
417	if ($proxy) {	590	if ($proxy) {
…		…
425	} else {	598	} else {
426	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	599	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
427	}	600	}
428		601
429	# leave out fragment and query string, just a heuristic	602	# leave out fragment and query string, just a heuristic
430	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	603	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
431	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	604	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
432		605
433	$hdr{"content-length"} = length $arg{body};	606	$hdr{"content-length"} = length $arg{body}
		607	if length $arg{body} \|\| $method ne "GET";
		608
		609	$hdr{connection} = "close TE"; #1.1
		610	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
434		611
435	my %state = (connect_guard => 1);	612	my %state = (connect_guard => 1);
436		613
437	_get_slot $uhost, sub {	614	_get_slot $uhost, sub {
438	$state{slot_guard} = shift;	615	$state{slot_guard} = shift;
439		616
440	return unless $state{connect_guard};	617	return unless $state{connect_guard};
441		618
442	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	619	my $ae_error = 595; # connecting
		620
		621	my $connect_cb = sub {
443	$state{fh} = shift	622	$state{fh} = shift
444	or do {	623	or do {
445	my $err = "$!";	624	my $err = "$!";
446	%state = ();	625	%state = ();
447	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });	626	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
448	};	627	};
449
450	pop; # free memory, save a tree
451		628
452	return unless delete $state{connect_guard};	629	return unless delete $state{connect_guard};
453		630
454	# get handle	631	# get handle
455	$state{handle} = new AnyEvent::Handle	632	$state{handle} = new AnyEvent::Handle
456	fh => $state{fh},	633	fh => $state{fh},
		634	peername => $rhost,
		635	tls_ctx => $arg{tls_ctx},
		636	# these need to be reconfigured on keepalive handles
457	timeout => $timeout,	637	timeout => $timeout,
458	peername => $rhost,	638	on_error => sub {
459	tls_ctx => $arg{tls_ctx};	639	%state = ();
		640	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
		641	},
		642	on_eof => sub {
		643	%state = ();
		644	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
		645	},
		646	;
460		647
461	# limit the number of persistent connections	648	# limit the number of persistent connections
462	# keepalive not yet supported	649	# keepalive not yet supported
463	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	650	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
464	++$KA_COUNT{$_[1]};	651	# ++$KA_COUNT{$_[1]};
465	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	652	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
466	--$KA_COUNT{$_[1]}	653	# --$KA_COUNT{$_[1]}
467	};	654	# };
468	$hdr{connection} = "keep-alive";	655	# $hdr{connection} = "keep-alive";
469	} else {
470	delete $hdr{connection};
471	}	656	# }
472
473	# (re-)configure handle
474	$state{handle}->on_error (sub {
475	%state = ();
476	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
477	});
478	$state{handle}->on_eof (sub {
479	%state = ();
480	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
481	});
482		657
483	$state{handle}->starttls ("connect") if $rscheme eq "https";	658	$state{handle}->starttls ("connect") if $rscheme eq "https";
484		659
485	# handle actual, non-tunneled, request	660	# handle actual, non-tunneled, request
486	my $handle_actual_request = sub {	661	my $handle_actual_request = sub {
		662	$ae_error = 596; # request phase
		663
487	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	664	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
488		665
489	# send request	666	# send request
490	$state{handle}->push_write (	667	$state{handle}->push_write (
491	"$method $rpath HTTP/1.0\015\012"	668	"$method $rpath HTTP/1.1\015\012"
492	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	669	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
493	. "\015\012"	670	. "\015\012"
494	. (delete $arg{body})	671	. (delete $arg{body})
495	);	672	);
496		673
		674	# return if error occured during push_write()
		675	return unless %state;
		676
497	%hdr = (); # reduce memory usage, save a kitten	677	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
498		678
499	# status line	679	# status line and headers
500	$state{handle}->push_read (line => $qr_nl, sub {	680	$state{read_response} = sub {
501	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
502	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
503
504	my %hdr = ( # response headers
505	HTTPVersion => ",$1",
506	Status => ",$2",
507	Reason => ",$3",
508	URL => ",$url"
509	);
510
511	# headers, could be optimized a bit
512	$state{handle}->unshift_read (line => $qr_nlnl, sub {
513	for ("$_[1]") {	681	for ("$_[1]") {
514	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	682	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
515		683
516	# things seen, not parsed:	684	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
517	# p3pP="NON CUR OTPi OUR NOR UNI"	685	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
518		686
519	$hdr{lc $1} .= ",$2"	687	# 100 Continue handling
520	while /\G	688	# should not happen as we don't send expect: 100-continue,
521	([^:\000-\037]*):	689	# but we handle it just in case.
522	[\011\040]*	690	# since we send the request body regardless, if we get an error
523	((?: [^\012]+ \| \012[\011\040] )*)	691	# we are out of-sync, which we currently do NOT handle correctly.
524	\012	692	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
525	/gxc;	693	if $2 eq 100;
526		694
		695	push @pseudo,
		696	HTTPVersion => $1,
		697	Status => $2,
		698	Reason => $3,
527	/\G$/	699	;
		700
		701	my $hdr = parse_hdr
528	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));	702	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		703
		704	%hdr = (%$hdr, @pseudo);
		705	}
		706
		707	# redirect handling
		708	# microsoft and other shitheads don't give a shit for following standards,
		709	# try to support some common forms of broken Location headers.
		710	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		711	$hdr{location} =~ s/^\.\/+//;
		712
		713	my $url = "$rscheme://$uhost:$uport";
		714
		715	unless ($hdr{location} =~ s/^\///) {
		716	$url .= $upath;
		717	$url =~ s/\/[^\/]*$//;
529	}	718	}
530		719
531	substr $_, 0, 1, ""	720	$hdr{location} = "$url/$hdr{location}";
532	for values %hdr;	721	}
533		722
		723	my $redirect;
		724
		725	if ($recurse) {
		726	my $status = $hdr{Status};
		727
		728	# industry standard is to redirect POST as GET for
		729	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		730	# also, the UA should ask the user for 301 and 307 and POST,
		731	# industry standard seems to be to simply follow.
		732	# we go with the industry standard.
		733	if ($status == 301 or $status == 302 or $status == 303) {
		734	# HTTP/1.1 is unclear on how to mutate the method
		735	$method = "GET" unless $method eq "HEAD";
534	# redirect handling	736	$redirect = 1;
535	# microsoft and other shitheads don't give a shit for following standards,	737	} elsif ($status == 307) {
536	# try to support some common forms of broken Location headers.	738	$redirect = 1;
537	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	739	}
538	$hdr{location} =~ s/^\.\/+//;	740	}
539		741
540	my $url = "$rscheme://$uhost:$uport";	742	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		743	my $may_keep_alive = $_[3];
541		744
542	unless ($hdr{location} =~ s/^\///) {	745	$state{handle}->destroy if $state{handle};
		746	%state = ();
		747
		748	if (defined $_[1]) {
		749	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		750	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		751	}
		752
		753	# set-cookie processing
		754	if ($arg{cookie_jar}) {
		755	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		756	}
		757
		758	if ($redirect && exists $hdr{location}) {
		759	# we ignore any errors, as it is very common to receive
		760	# Content-Length != 0 but no actual body
		761	# we also access %hdr, as $_[1] might be an erro
		762	http_request (
		763	$method => $hdr{location},
		764	%arg,
		765	recurse => $recurse - 1,
		766	Redirect => [$_[0], \%hdr],
		767	$cb);
		768	} else {
		769	$cb->($_[0], \%hdr);
		770	}
		771	};
		772
		773	$ae_error = 597; # body phase
		774
		775	my $len = $hdr{"content-length"};
		776
		777	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		778	$finish->(undef, 598 => "Request cancelled by on_header");
		779	} elsif (
		780	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		781	or $method eq "HEAD"
		782	or (defined $len && !$len)
		783	) {
		784	# no body
		785	$finish->("", undef, undef, 1);
		786	} else {
		787	# body handling, many different code paths
		788	# - no body expected
		789	# - want_body_handle
		790	# - te chunked
		791	# - 2x length known (with or without on_body)
		792	# - 2x length not known (with or without on_body)
		793	if (!$redirect && $arg{want_body_handle}) {
		794	$_[0]->on_eof (undef);
		795	$_[0]->on_error (undef);
		796	$_[0]->on_read (undef);
		797
		798	$finish->(delete $state{handle});
		799
		800	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		801	my $cl = 0;
		802	my $body = undef;
		803	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		804
		805	my $read_chunk; $read_chunk = sub {
		806	$_[1] =~ /^([0-9a-fA-F]+)/
		807	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		808
		809	my $len = hex $1;
		810
		811	if ($len) {
543	$url .= $upath;	812	$cl += $len;
544	$url =~ s/\/[^\/]*$//;	813
		814	$_[0]->push_read (chunk => $len, sub {
		815	$on_body->($_[1], \%hdr)
		816	or return $finish->(undef, 598 => "Request cancelled by on_body");
		817
		818	$_[0]->push_read (line => sub {
		819	length $_[1]
		820	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		821	$_[0]->push_read (line => $read_chunk);
		822	});
		823	});
		824	} else {
		825	$hdr{"content-length"} \|\|= $cl;
		826
		827	$_[0]->push_read (line => $qr_nlnl, sub {
		828	if (length $_[1]) {
		829	for ("$_[1]") {
		830	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		831
		832	my $hdr = parse_hdr
		833	or return $finish->(undef, $ae_error => "Garbled response trailers");
		834
		835	%hdr = (%hdr, %$hdr);
		836	}
		837	}
		838
		839	$finish->($body, undef, undef, 1);
		840	});
		841	}
		842	};
		843
		844	$_[0]->push_read (line => $read_chunk);
		845
		846	} elsif ($arg{on_body}) {
		847	if ($len) {
		848	$_[0]->on_read (sub {
		849	$len -= length $_[0]{rbuf};
		850
		851	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		852	or return $finish->(undef, 598 => "Request cancelled by on_body");
		853
		854	$len > 0
		855	or $finish->("", undef, undef, 1);
		856	});
		857	} else {
		858	$_[0]->on_eof (sub {
		859	$finish->("");
		860	});
		861	$_[0]->on_read (sub {
		862	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		863	or $finish->(undef, 598 => "Request cancelled by on_body");
		864	});
545	}	865	}
546
547	$hdr{location} = "$url/$hdr{location}";
548	}	866	} else {
		867	$_[0]->on_eof (undef);
549		868
550	my $redirect;
551
552	if ($recurse) {	869	if ($len) {
553	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {	870	$_[0]->on_read (sub {
554	# apparently, mozilla et al. just change POST to GET here	871	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
555	# more research is needed before we do the same	872	if $len <= length $_[0]{rbuf};
556	$redirect = 1;	873	});
557	} elsif ($hdr{Status} == 303) {	874	} else {
558	# even http/1.1 is unclear on how to mutate the method	875	$_[0]->on_error (sub {
559	$method = "GET" unless $method eq "HEAD";	876	($! == Errno::EPIPE \|\| !$!)
		877	? $finish->(delete $_[0]{rbuf})
		878	: $finish->(undef, $ae_error => $_[2]);
560	$redirect = 1;	879	});
561	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {	880	$_[0]->on_read (sub { });
562	$redirect = 1;
563	}	881	}
564	}	882	}
565
566	my $finish = sub {
567	$state{handle}->destroy if $state{handle};
568	%state = ();
569
570	# set-cookie processing
571	if ($arg{cookie_jar}) {
572	for ($_[1]{"set-cookie"}) {
573	# parse NAME=VALUE
574	my @kv;
575
576	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
577	my $name = $1;
578	my $value = $3;
579
580	unless ($value) {
581	$value = $2;
582	$value =~ s/\\(.)/$1/gs;
583	}
584
585	push @kv, $name => $value;
586
587	last unless /\G\s*;/gc;
588	}
589
590	last unless @kv;
591
592	my $name = shift @kv;
593	my %kv = (value => shift @kv, @kv);
594
595	my $cdom;
596	my $cpath = (delete $kv{path}) \|\| "/";
597
598	if (exists $kv{domain}) {
599	$cdom = delete $kv{domain};
600
601	$cdom =~ s/^\.?/./; # make sure it starts with a "."
602
603	next if $cdom =~ /\.$/;
604
605	# this is not rfc-like and not netscape-like. go figure.
606	my $ndots = $cdom =~ y/.//;
607	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
608	} else {
609	$cdom = $uhost;
610	}
611
612	# store it
613	$arg{cookie_jar}{version} = 1;
614	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
615
616	redo if /\G\s*,/gc;
617	}
618	}
619
620	if ($redirect && exists $hdr{location}) {
621	# we ignore any errors, as it is very common to receive
622	# Content-Length != 0 but no actual body
623	# we also access %hdr, as $_[1] might be an erro
624	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
625	} else {
626	$cb->($_[0], $_[1]);
627	}
628	};
629
630	my $len = $hdr{"content-length"};
631
632	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
633	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
634	} elsif (
635	$hdr{Status} =~ /^(?:1..\|[23]04)$/
636	or $method eq "HEAD"
637	or (defined $len && !$len)
638	) {
639	# no body
640	$finish->("", \%hdr);
641	} else {
642	# body handling, four different code paths
643	# for want_body_handle, on_body (2x), normal (2x)
644	# we might read too much here, but it does not matter yet (no pers. connections)
645	if (!$redirect && $arg{want_body_handle}) {
646	$_[0]->on_eof (undef);
647	$_[0]->on_error (undef);
648	$_[0]->on_read (undef);
649
650	$finish->(delete $state{handle}, \%hdr);
651
652	} elsif ($arg{on_body}) {
653	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
654	if ($len) {
655	$_[0]->on_eof (undef);
656	$_[0]->on_read (sub {
657	$len -= length $_[0]{rbuf};
658
659	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
660	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
661
662	$len > 0
663	or $finish->("", \%hdr);
664	});
665	} else {
666	$_[0]->on_eof (sub {
667	$finish->("", \%hdr);
668	});
669	$_[0]->on_read (sub {
670	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
671	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
672	});
673	}
674	} else {
675	$_[0]->on_eof (undef);
676
677	if ($len) {
678	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
679	$_[0]->on_read (sub {
680	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
681	if $len <= length $_[0]{rbuf};
682	});
683	} else {
684	$_[0]->on_error (sub {
685	$! == Errno::EPIPE \|\| !$!
686	? $finish->(delete $_[0]{rbuf}, \%hdr)
687	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
688	});
689	$_[0]->on_read (sub { });
690	}
691	}
692	}
693	});	883	}
694	});	884	};
		885
		886	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
695	};	887	};
696		888
697	# now handle proxy-CONNECT method	889	# now handle proxy-CONNECT method
698	if ($proxy && $uscheme eq "https") {	890	if ($proxy && $uscheme eq "https") {
699	# oh dear, we have to wrap it into a connect request	891	# oh dear, we have to wrap it into a connect request
700		892
701	# maybe re-use $uauthority with patched port?	893	# maybe re-use $uauthority with patched port?
702	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	894	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
703	$state{handle}->push_read (line => $qr_nlnl, sub {	895	$state{handle}->push_read (line => $qr_nlnl, sub {
704	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	896	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
705	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	897	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
706		898
707	if ($2 == 200) {	899	if ($2 == 200) {
708	$rpath = $upath;	900	$rpath = $upath;
709	&$handle_actual_request;	901	&$handle_actual_request;
710	} else {	902	} else {
711	%state = ();	903	%state = ();
712	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	904	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
713	}	905	}
714	});	906	});
715	} else {	907	} else {
716	&$handle_actual_request;	908	&$handle_actual_request;
717	}	909	}
		910	};
718		911
719	}, $arg{on_prepare} \|\| sub { $timeout };	912	my $tcp_connect = $arg{tcp_connect}
		913	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		914
		915	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		916
720	};	917	};
721		918
722	defined wantarray && AnyEvent::Util::guard { %state = () }	919	defined wantarray && AnyEvent::Util::guard { %state = () }
723	}	920	}
724		921
…		…
738	&http_request	935	&http_request
739	}	936	}
740		937
741	=back	938	=back
742		939
		940	=head2 DNS CACHING
		941
		942	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		943	the actual connection, which in turn uses AnyEvent::DNS to resolve
		944	hostnames. The latter is a simple stub resolver and does no caching
		945	on its own. If you want DNS caching, you currently have to provide
		946	your own default resolver (by storing a suitable resolver object in
		947	C<$AnyEvent::DNS::RESOLVER>).
		948
743	=head2 GLOBAL FUNCTIONS AND VARIABLES	949	=head2 GLOBAL FUNCTIONS AND VARIABLES
744		950
745	=over 4	951	=over 4
746		952
747	=item AnyEvent::HTTP::set_proxy "proxy-url"	953	=item AnyEvent::HTTP::set_proxy "proxy-url"
…		…
750	string of the form C<http://host:port> (optionally C<https:...>), croaks	956	string of the form C<http://host:port> (optionally C<https:...>), croaks
751	otherwise.	957	otherwise.
752		958
753	To clear an already-set proxy, use C<undef>.	959	To clear an already-set proxy, use C<undef>.
754		960
		961	=item $date = AnyEvent::HTTP::format_date $timestamp
		962
		963	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		964	Date (RFC 2616).
		965
		966	=item $timestamp = AnyEvent::HTTP::parse_date $date
		967
		968	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
		969	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		970	be parsed.
		971
755	=item $AnyEvent::HTTP::MAX_RECURSE	972	=item $AnyEvent::HTTP::MAX_RECURSE
756		973
757	The default value for the C<recurse> request parameter (default: C<10>).	974	The default value for the C<recurse> request parameter (default: C<10>).
758		975
759	=item $AnyEvent::HTTP::USERAGENT	976	=item $AnyEvent::HTTP::USERAGENT
…		…
777	connections. This number of can be useful for load-leveling.	994	connections. This number of can be useful for load-leveling.
778		995
779	=back	996	=back
780		997
781	=cut	998	=cut
		999
		1000	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1001	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1002
		1003	sub format_date($) {
		1004	my ($time) = @_;
		1005
		1006	# RFC 822/1123 format
		1007	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1008
		1009	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1010	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1011	$H, $M, $S;
		1012	}
		1013
		1014	sub parse_date($) {
		1015	my ($date) = @_;
		1016
		1017	my ($d, $m, $y, $H, $M, $S);
		1018
		1019	if ($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$/) {
		1020	# RFC 822/1123, required by RFC 2616 (with " ")
		1021	# cookie dates (with "-")
		1022
		1023	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1024
		1025	} elsif ($date =~ /^[A-Z][a-z]+, ([0-9][0-9])-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) {
		1026	# RFC 850
		1027	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1028
		1029	} elsif ($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])$/) {
		1030	# ISO C's asctime
		1031	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1032	}
		1033	# other formats fail in the loop below
		1034
		1035	for (0..11) {
		1036	if ($m eq $month[$_]) {
		1037	require Time::Local;
		1038	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1039	}
		1040	}
		1041
		1042	undef
		1043	}
782		1044
783	sub set_proxy($) {	1045	sub set_proxy($) {
784	if (length $_[0]) {	1046	if (length $_[0]) {
785	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1047	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
786	or Carp::croak "$_[0]: invalid proxy URL";	1048	or Carp::croak "$_[0]: invalid proxy URL";
…		…
793	# initialise proxy from environment	1055	# initialise proxy from environment
794	eval {	1056	eval {
795	set_proxy $ENV{http_proxy};	1057	set_proxy $ENV{http_proxy};
796	};	1058	};
797		1059
		1060	=head2 SOCKS PROXIES
		1061
		1062	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1063	compile your perl to support socks, or use an external program such as
		1064	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1065	transparently.
		1066
		1067	Alternatively, for AnyEvent::HTTP only, you can use your own
		1068	C<tcp_connect> function that does the proxy handshake - here is an example
		1069	that works with socks4a proxies:
		1070
		1071	use Errno;
		1072	use AnyEvent::Util;
		1073	use AnyEvent::Socket;
		1074	use AnyEvent::Handle;
		1075
		1076	# host, port and username of/for your socks4a proxy
		1077	my $socks_host = "10.0.0.23";
		1078	my $socks_port = 9050;
		1079	my $socks_user = "";
		1080
		1081	sub socks4a_connect {
		1082	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1083
		1084	my $hdl = new AnyEvent::Handle
		1085	connect => [$socks_host, $socks_port],
		1086	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1087	on_error => sub { $connect_cb->() },
		1088	;
		1089
		1090	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1091
		1092	$hdl->push_read (chunk => 8, sub {
		1093	my ($hdl, $chunk) = @_;
		1094	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1095
		1096	if ($status == 0x5a) {
		1097	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1098	} else {
		1099	$! = Errno::ENXIO; $connect_cb->();
		1100	}
		1101	});
		1102
		1103	$hdl
		1104	}
		1105
		1106	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1107	possibly after switching off other proxy types:
		1108
		1109	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1110
		1111	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1112	my ($data, $headers) = @_;
		1113	...
		1114	};
		1115
798	=head1 SEE ALSO	1116	=head1 SEE ALSO
799		1117
800	L<AnyEvent>.	1118	L<AnyEvent>.
801		1119
802	=head1 AUTHOR	1120	=head1 AUTHOR

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.52 by root, Sat Sep 26 10:13:12 2009 UTC vs. Revision 1.78 by root, Sat Jan 1 19:32:41 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.52 by root, Sat Sep 26 10:13:12 2009 UTC vs.
Revision 1.78 by root, Sat Jan 1 19:32:41 2011 UTC