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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC vs.
Revision 1.77 by root, Sat Jan 1 19:13:41 2011 UTC

…		…
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 4.8 ();	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 = '1.4';	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<< $headers->{Status} >> will be
114	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
115	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receive or processing.
		138
		139	=item 598 - user aborted request in C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
116		144
117	A typical callback might look like this:	145	A typical callback might look like this:
118		146
119	sub {	147	sub {
120	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
136	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
137	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
138		166
139	=item headers => hashref	167	=item headers => hashref
140		168
141	The request headers to use. Currently, C<http_request> may provide its	169	The request headers to use. Currently, C<http_request> may provide its own
142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
143	and will provide defaults for C<User-Agent:> and C<Referer:>.	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		172	(this can be suppressed by using C<undef> for these headers in which case
		173	they won't be sent at all).
144		174
145	=item timeout => $seconds	175	=item timeout => $seconds
146		176
147	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
148	the timeout, as will read or write activity. Default timeout is 5 minutes.	178	the timeout, as will read or write activity, i.e. this is not an overall
		179	timeout.
		180
		181	Default timeout is 5 minutes.
149		182
150	=item proxy => [$host, $port[, $scheme]] or undef	183	=item proxy => [$host, $port[, $scheme]] or undef
151		184
152	Use the given http proxy for all requests. If not specified, then the	185	Use the given http proxy for all requests. If not specified, then the
153	default proxy (as specified by C<$ENV{http_proxy}>) is used.	186	default proxy (as specified by C<$ENV{http_proxy}>) is used.
154		187
155	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
156	HTTPS.	189	HTTPS.
157		190
158	=item body => $string	191	=item body => $string
159		192
160	The request body, usually empty. Will be-sent as-is (future versions of	193	The request body, usually empty. Will be sent as-is (future versions of
161	this module might offer more options).	194	this module might offer more options).
162		195
163	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
164		197
165	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
166	based on the original netscape specification.	199	based on the original netscape specification.
167		200
168	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which will
169	get updated automatically. It is possible to save the cookie_jar to	202	get updated automatically. It is possible to save the cookie jar to
170	persistent storage with something like JSON or Storable, but this is not	203	persistent storage with something like JSON or Storable, but this is not
171	recommended, as expiry times are currently being ignored.	204	recommended, as session-only cookies might survive longer than expected.
172		205
173	Note that this cookie implementation is not of very high quality, nor	206	Note that this cookie implementation is not meant to be complete. If
174	meant to be complete. If you want complete cookie management you have to	207	you want complete cookie management you have to do that on your
175	do that on your own. C<cookie_jar> is meant as a quick fix to get some	208	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
176	cookie-using sites working. Cookies are a privacy disaster, do not use	209	working. Cookies are a privacy disaster, do not use them unless required
177	them unless required to.	210	to.
		211
		212	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		213	headers will be set and handled by this module, otherwise they will be
		214	left untouched.
178		215
179	=item tls_ctx => $scheme \| $tls_ctx	216	=item tls_ctx => $scheme \| $tls_ctx
180		217
181	Specifies the AnyEvent::TLS context to be used for https connections. This	218	Specifies the AnyEvent::TLS context to be used for https connections. This
182	parameter follows the same rules as the C<tls_ctx> parameter to	219	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
186	verification) TLS context.	223	verification) TLS context.
187		224
188	The default for this option is C<low>, which could be interpreted as "give	225	The default for this option is C<low>, which could be interpreted as "give
189	me the page, no matter what".	226	me the page, no matter what".
190		227
		228	=item on_prepare => $callback->($fh)
		229
		230	In rare cases you need to "tune" the socket before it is used to
		231	connect (for exmaple, to bind it on a given IP address). This parameter
		232	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		233	and behaves exactly the same way (e.g. it has to provide a
		234	timeout). See the description for the C<$prepare_cb> argument of
		235	C<AnyEvent::Socket::tcp_connect> for details.
		236
		237	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		238
		239	In even rarer cases you want total control over how AnyEvent::HTTP
		240	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		241	to do this, but you can provide your own C<tcp_connect> function -
		242	obviously, it has to follow the same calling conventions, except that it
		243	may always return a connection guard object.
		244
		245	There are probably lots of weird uses for this function, starting from
		246	tracing the hosts C<http_request> actually tries to connect, to (inexact
		247	but fast) host => IP address caching or even socks protocol support.
		248
191	=item on_header => $callback->($headers)	249	=item on_header => $callback->($headers)
192		250
193	When specified, this callback will be called with the header hash as soon	251	When specified, this callback will be called with the header hash as soon
194	as headers have been successfully received from the remote server (not on	252	as headers have been successfully received from the remote server (not on
195	locally-generated errors).	253	locally-generated errors).
…		…
200		258
201	This callback is useful, among other things, to quickly reject unwanted	259	This callback is useful, among other things, to quickly reject unwanted
202	content, which, if it is supposed to be rare, can be faster than first	260	content, which, if it is supposed to be rare, can be faster than first
203	doing a C<HEAD> request.	261	doing a C<HEAD> request.
204		262
		263	The downside is that cancelling the request makes it impossible to re-use
		264	the connection. Also, the C<on_header> callback will not receive any
		265	trailer (headers sent after the response body).
		266
205	Example: cancel the request unless the content-type is "text/html".	267	Example: cancel the request unless the content-type is "text/html".
206		268
207	on_header => sub {	269	on_header => sub {
208	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	270	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
209	},	271	},
…		…
216		278
217	It has to return either true (in which case AnyEvent::HTTP will continue),	279	It has to return either true (in which case AnyEvent::HTTP will continue),
218	or false, in which case AnyEvent::HTTP will cancel the download (and call	280	or false, in which case AnyEvent::HTTP will cancel the download (and call
219	the completion callback with an error code of C<598>).	281	the completion callback with an error code of C<598>).
220		282
		283	The downside to cancelling the request is that it makes it impossible to
		284	re-use the connection.
		285
221	This callback is useful when the data is too large to be held in memory	286	This callback is useful when the data is too large to be held in memory
222	(so the callback writes it to a file) or when only some information should	287	(so the callback writes it to a file) or when only some information should
223	be extracted, or when the body should be processed incrementally.	288	be extracted, or when the body should be processed incrementally.
224		289
225	It is usually preferred over doing your own body handling via	290	It is usually preferred over doing your own body handling via
226	C<want_body_handle>.	291	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		292	only used to create a connection, C<want_body_handle> is the better
		293	alternative, as it allows you to install your own event handler, reducing
		294	resource usage.
227		295
228	=item want_body_handle => $enable	296	=item want_body_handle => $enable
229		297
230	When enabled (default is disabled), the behaviour of AnyEvent::HTTP	298	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
231	changes considerably: after parsing the headers, and instead of	299	changes considerably: after parsing the headers, and instead of
…		…
243	This is useful with some push-type services, where, after the initial	311	This is useful with some push-type services, where, after the initial
244	headers, an interactive protocol is used (typical example would be the	312	headers, an interactive protocol is used (typical example would be the
245	push-style twitter API which starts a JSON/XML stream).	313	push-style twitter API which starts a JSON/XML stream).
246		314
247	If you think you need this, first have a look at C<on_body>, to see if	315	If you think you need this, first have a look at C<on_body>, to see if
248	that doesn'T solve your problem in a better way.	316	that doesn't solve your problem in a better way.
249		317
250	=back	318	=back
251		319
252	Example: make a simple HTTP GET request for http://www.nethype.de/	320	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		321	the response body.
253		322
254	http_request GET => "http://www.nethype.de/", sub {	323	http_request GET => "http://www.nethype.de/", sub {
255	my ($body, $hdr) = @_;	324	my ($body, $hdr) = @_;
256	print "$body\n";	325	print "$body\n";
257	};	326	};
258		327
259	Example: make a HTTP HEAD request on https://www.google.com/, use a	328	Example: do a HTTP HEAD request on https://www.google.com/, use a
260	timeout of 30 seconds.	329	timeout of 30 seconds.
261		330
262	http_request	331	http_request
263	GET => "https://www.google.com",	332	GET => "https://www.google.com",
264	timeout => 30,	333	timeout => 30,
…		…
267	use Data::Dumper;	336	use Data::Dumper;
268	print Dumper $hdr;	337	print Dumper $hdr;
269	}	338	}
270	;	339	;
271		340
272	Example: make another simple HTTP GET request, but immediately try to	341	Example: do another simple HTTP GET request, but immediately try to
273	cancel it.	342	cancel it.
274		343
275	my $request = http_request GET => "http://www.nethype.de/", sub {	344	my $request = http_request GET => "http://www.nethype.de/", sub {
276	my ($body, $hdr) = @_;	345	my ($body, $hdr) = @_;
277	print "$body\n";	346	print "$body\n";
…		…
309	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	378	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
310		379
311	_slot_schedule $_[0];	380	_slot_schedule $_[0];
312	}	381	}
313		382
314	our $qr_nl = qr<\015?\012>;	383	# extract cookies from jar
315	our $qr_nlnl = qr<\015?\012\015?\012>;	384	sub cookie_jar_extract($$$$) {
		385	my ($jar, $uscheme, $uhost, $upath) = @_;
		386
		387	%$jar = () if $jar->{version} != 1;
		388
		389	my @cookies;
		390
		391	while (my ($chost, $paths) = each %$jar) {
		392	next unless ref $paths;
		393
		394	if ($chost =~ /^\./) {
		395	next unless $chost eq substr $uhost, -length $chost;
		396	} elsif ($chost =~ /\./) {
		397	next unless $chost eq $uhost;
		398	} else {
		399	next;
		400	}
		401
		402	while (my ($cpath, $cookies) = each %$paths) {
		403	next unless $cpath eq substr $upath, 0, length $cpath;
		404
		405	while (my ($cookie, $kv) = each %$cookies) {
		406	next if $uscheme ne "https" && exists $kv->{secure};
		407
		408	if (exists $kv->{expires}) {
		409	if (AE::now > parse_date ($kv->{expires})) {
		410	delete $cookies->{$cookie};
		411	next;
		412	}
		413	}
		414
		415	my $value = $kv->{value};
		416
		417	if ($value =~ /[=;,[:space:]]/) {
		418	$value =~ s/([\\"])/\\$1/g;
		419	$value = "\"$value\"";
		420	}
		421
		422	push @cookies, "$cookie=$value";
		423	}
		424	}
		425	}
		426
		427	\@cookies
		428	}
		429
		430	# parse set_cookie header into jar
		431	sub cookie_jar_set_cookie($$$) {
		432	my ($jar, $set_cookie, $uhost) = @_;
		433
		434	for ($set_cookie) {
		435	# parse NAME=VALUE
		436	my @kv;
		437
		438	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
		523	our $qr_nlnl = qr{(?<![^\012])\015?\012};
316		524
317	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	525	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
318	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	526	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
319		527
320	sub http_request($$@) {	528	sub http_request($$@) {
…		…
332	while (my ($k, $v) = each %$hdr) {	540	while (my ($k, $v) = each %$hdr) {
333	$hdr{lc $k} = $v;	541	$hdr{lc $k} = $v;
334	}	542	}
335	}	543	}
336		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
337	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	549	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
338		550
339	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	551	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
340	if $recurse < 0;	552	if $recurse < 0;
341		553
342	my $proxy = $arg{proxy} \|\| $PROXY;	554	my $proxy = $arg{proxy} \|\| $PROXY;
343	my $timeout = $arg{timeout} \|\| $TIMEOUT;	555	my $timeout = $arg{timeout} \|\| $TIMEOUT;
344		556
345	my ($uscheme, $uauthority, $upath, $query, $fragment) =	557	my ($uscheme, $uauthority, $upath, $query, $fragment) =
346	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	558	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
347		559
348	$uscheme = lc $uscheme;	560	$uscheme = lc $uscheme;
349		561
350	my $uport = $uscheme eq "http" ? 80	562	my $uport = $uscheme eq "http" ? 80
351	: $uscheme eq "https" ? 443	563	: $uscheme eq "https" ? 443
352	: 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" });
353		565
354	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	566	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
355	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	567	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
356		568
357	my $uhost = $1;	569	my $uhost = $1;
358	$uport = $2 if defined $2;	570	$uport = $2 if defined $2;
359		571
360	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";	572	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		573	unless exists $hdr{host};
361		574
362	$uhost =~ s/^\[(.*)\]$/$1/;	575	$uhost =~ s/^\[(.*)\]$/$1/;
363	$upath .= "?$query" if length $query;	576	$upath .= $query if length $query;
364		577
365	$upath =~ s%^/?%/%;	578	$upath =~ s%^/?%/%;
366		579
367	# cookie processing	580	# cookie processing
368	if (my $jar = $arg{cookie_jar}) {	581	if (my $jar = $arg{cookie_jar}) {
369	%$jar = () if $jar->{version} != 1;	582	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
370		583
371	my @cookie;
372
373	while (my ($chost, $v) = each %$jar) {
374	if ($chost =~ /^\./) {
375	next unless $chost eq substr $uhost, -length $chost;
376	} elsif ($chost =~ /\./) {
377	next unless $chost eq $uhost;
378	} else {
379	next;
380	}
381
382	while (my ($cpath, $v) = each %$v) {
383	next unless $cpath eq substr $upath, 0, length $cpath;
384
385	while (my ($k, $v) = each %$v) {
386	next if $uscheme ne "https" && exists $v->{secure};
387	my $value = $v->{value};
388	$value =~ s/([\\"])/\\$1/g;
389	push @cookie, "$k=\"$value\"";
390	}
391	}
392	}
393
394	$hdr{cookie} = join "; ", @cookie	584	$hdr{cookie} = join "; ", @$cookies
395	if @cookie;	585	if @$cookies;
396	}	586	}
397		587
398	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	588	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
399		589
400	if ($proxy) {	590	if ($proxy) {
401	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	591	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		592
		593	$rscheme = "http" unless defined $rscheme;
402		594
403	# don't support https requests over https-proxy transport,	595	# don't support https requests over https-proxy transport,
404	# can't be done with tls as spec'ed, unless you double-encrypt.	596	# can't be done with tls as spec'ed, unless you double-encrypt.
405	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	597	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
406	} else {	598	} else {
407	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	599	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
408	}	600	}
409		601
410	$hdr{"user-agent"} \|\|= $USERAGENT;	602	# leave out fragment and query string, just a heuristic
411	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic	603	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		604	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
412		605
413	$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
414		611
415	my %state = (connect_guard => 1);	612	my %state = (connect_guard => 1);
416		613
417	_get_slot $uhost, sub {	614	_get_slot $uhost, sub {
418	$state{slot_guard} = shift;	615	$state{slot_guard} = shift;
419		616
420	return unless $state{connect_guard};	617	return unless $state{connect_guard};
421		618
422	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	619	my $ae_error = 595; # connecting
		620
		621	my $connect_cb = sub {
423	$state{fh} = shift	622	$state{fh} = shift
424	or do {	623	or do {
425	my $err = "$!";	624	my $err = "$!";
426	%state = ();	625	%state = ();
427	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });	626	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
428	};	627	};
429
430	pop; # free memory, save a tree
431		628
432	return unless delete $state{connect_guard};	629	return unless delete $state{connect_guard};
433		630
434	# get handle	631	# get handle
435	$state{handle} = new AnyEvent::Handle	632	$state{handle} = new AnyEvent::Handle
436	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
437	timeout => $timeout,	637	timeout => $timeout,
438	peername => $rhost,	638	on_error => sub {
439	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 => $ae_error, Reason => "Unexpected end-of-file" });
		645	},
		646	;
440		647
441	# limit the number of persistent connections	648	# limit the number of persistent connections
442	# keepalive not yet supported	649	# keepalive not yet supported
443	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	650	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
444	++$KA_COUNT{$_[1]};	651	# ++$KA_COUNT{$_[1]};
445	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	652	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
446	--$KA_COUNT{$_[1]}	653	# --$KA_COUNT{$_[1]}
447	};	654	# };
448	$hdr{connection} = "keep-alive";	655	# $hdr{connection} = "keep-alive";
449	} else {
450	delete $hdr{connection};
451	}	656	# }
452
453	# (re-)configure handle
454	$state{handle}->on_error (sub {
455	%state = ();
456	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
457	});
458	$state{handle}->on_eof (sub {
459	%state = ();
460	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
461	});
462		657
463	$state{handle}->starttls ("connect") if $rscheme eq "https";	658	$state{handle}->starttls ("connect") if $rscheme eq "https";
464		659
465	# handle actual, non-tunneled, request	660	# handle actual, non-tunneled, request
466	my $handle_actual_request = sub {	661	my $handle_actual_request = sub {
		662	$ae_error = 596; # request phase
		663
467	$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};
468		665
469	# send request	666	# send request
470	$state{handle}->push_write (	667	$state{handle}->push_write (
471	"$method $rpath HTTP/1.0\015\012"	668	"$method $rpath HTTP/1.1\015\012"
472	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	669	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
473	. "\015\012"	670	. "\015\012"
474	. (delete $arg{body})	671	. (delete $arg{body})
475	);	672	);
476		673
		674	# return if error occured during push_write()
		675	return unless %state;
		676
477	%hdr = (); # reduce memory usage, save a kitten	677	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
478		678
479	# status line	679	# status line and headers
480	$state{handle}->push_read (line => $qr_nl, sub {	680	$state{read_response} = sub {
481	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
482	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
483
484	my %hdr = ( # response headers
485	HTTPVersion => ",$1",
486	Status => ",$2",
487	Reason => ",$3",
488	URL => ",$url"
489	);
490
491	# headers, could be optimized a bit
492	$state{handle}->unshift_read (line => $qr_nlnl, sub {
493	for ("$_[1]\012") {	681	for ("$_[1]") {
494	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.
495		683
496	# things seen, not parsed:	684	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
497	# p3pP="NON CUR OTPi OUR NOR UNI"	685	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
498		686
499	$hdr{lc $1} .= ",$2"	687	# 100 Continue handling
500	while /\G	688	# should not happen as we don't send expect: 100-continue,
501	([^:\000-\037]*):	689	# but we handle it just in case.
502	[\011\040]*	690	# since we send the request body regardless, if we get an error
503	((?: [^\012]+ \| \012[\011\040] )*)	691	# we are out of-sync, which we currently do NOT handle correctly.
504	\012	692	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
505	/gxc;	693	if $2 eq 100;
506		694
		695	push @pseudo,
		696	HTTPVersion => $1,
		697	Status => $2,
		698	Reason => $3,
507	/\G$/	699	;
		700
		701	my $hdr = parse_hdr
508	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	$url =~ s/\/[^\/]*$//;
509	}	718	}
510		719
511	substr $_, 0, 1, ""	720	$hdr{location} = "$url/$hdr{location}";
512	for values %hdr;	721	}
513		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";
514	# redirect handling	736	$redirect = 1;
515	# microsoft and other shitheads don't give a shit for following standards,	737	} elsif ($status == 307) {
516	# try to support some common forms of broken Location headers.	738	$redirect = 1;
517	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	739	}
518	$hdr{location} =~ s/^\.\/+//;	740	}
519		741
520	my $url = "$rscheme://$uhost:$uport";	742	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		743	my $may_keep_alive = $_[3];
521		744
522	unless ($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) {
523	$url .= $upath;	812	$cl += $len;
524	$url =~ s/\/[^\/]*$//;	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	});
525	}	865	}
526
527	$hdr{location} = "$url/$hdr{location}";
528	}	866	} else {
		867	$_[0]->on_eof (undef);
529		868
530	my $redirect;
531
532	if ($recurse) {	869	if ($len) {
533	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {	870	$_[0]->on_read (sub {
534	# apparently, mozilla et al. just change POST to GET here	871	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
535	# more research is needed before we do the same	872	if $len <= length $_[0]{rbuf};
536	$redirect = 1;	873	});
537	} elsif ($hdr{Status} == 303) {	874	} else {
538	# even http/1.1 is unclear on how to mutate the method	875	$_[0]->on_error (sub {
539	$method = "GET" unless $method eq "HEAD";	876	($! == Errno::EPIPE \|\| !$!)
		877	? $finish->(delete $_[0]{rbuf})
		878	: $finish->(undef, $ae_error => $_[2]);
540	$redirect = 1;	879	});
541	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {	880	$_[0]->on_read (sub { });
542	$redirect = 1;
543	}	881	}
544	}	882	}
545
546	my $finish = sub {
547	$state{handle}->destroy if $state{handle};
548	%state = ();
549
550	# set-cookie processing
551	if ($arg{cookie_jar}) {
552	for ($_[1]{"set-cookie"}) {
553	# parse NAME=VALUE
554	my @kv;
555
556	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
557	my $name = $1;
558	my $value = $3;
559
560	unless ($value) {
561	$value = $2;
562	$value =~ s/\\(.)/$1/gs;
563	}
564
565	push @kv, $name => $value;
566
567	last unless /\G\s*;/gc;
568	}
569
570	last unless @kv;
571
572	my $name = shift @kv;
573	my %kv = (value => shift @kv, @kv);
574
575	my $cdom;
576	my $cpath = (delete $kv{path}) \|\| "/";
577
578	if (exists $kv{domain}) {
579	$cdom = delete $kv{domain};
580
581	$cdom =~ s/^\.?/./; # make sure it starts with a "."
582
583	next if $cdom =~ /\.$/;
584
585	# this is not rfc-like and not netscape-like. go figure.
586	my $ndots = $cdom =~ y/.//;
587	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
588	} else {
589	$cdom = $uhost;
590	}
591
592	# store it
593	$arg{cookie_jar}{version} = 1;
594	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
595
596	redo if /\G\s*,/gc;
597	}
598	}
599
600	if ($redirect) {
601	# we ignore any errors, as it is very common to receive
602	# Content-Length != 0 but no actual body
603	# we also access %hdr, as $_[1] might be an erro
604	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
605	} else {
606	$cb->($_[0], $_[1]);
607	}
608	};
609
610	my $len = $hdr{"content-length"};
611
612	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
613	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
614	} elsif (
615	$hdr{Status} =~ /^(?:1..\|[23]04)$/
616	or $method eq "HEAD"
617	or (defined $len && !$len)
618	) {
619	# no body
620	$finish->("", \%hdr);
621	} else {
622	# body handling, four different code paths
623	# for want_body_handle, on_body (2x), normal (2x)
624	# we might read too much here, but it does not matter yet (no pers. connections)
625	if (!$redirect && $arg{want_body_handle}) {
626	$_[0]->on_eof (undef);
627	$_[0]->on_error (undef);
628	$_[0]->on_read (undef);
629
630	$finish->(delete $state{handle}, \%hdr);
631
632	} elsif ($arg{on_body}) {
633	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
634	if ($len) {
635	$_[0]->on_eof (undef);
636	$_[0]->on_read (sub {
637	$len -= length $_[0]{rbuf};
638
639	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
640	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
641
642	$len > 0
643	or $finish->("", \%hdr);
644	});
645	} else {
646	$_[0]->on_eof (sub {
647	$finish->("", \%hdr);
648	});
649	$_[0]->on_read (sub {
650	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
651	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
652	});
653	}
654	} else {
655	$_[0]->on_eof (undef);
656
657	if ($len) {
658	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
659	$_[0]->on_read (sub {
660	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
661	if $len <= length $_[0]{rbuf};
662	});
663	} else {
664	$_[0]->on_error (sub {
665	$! == Errno::EPIPE \|\| !$!
666	? $finish->(delete $_[0]{rbuf}, \%hdr)
667	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
668	});
669	$_[0]->on_read (sub { });
670	}
671	}
672	}
673	});	883	}
674	});	884	};
		885
		886	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
675	};	887	};
676		888
677	# now handle proxy-CONNECT method	889	# now handle proxy-CONNECT method
678	if ($proxy && $uscheme eq "https") {	890	if ($proxy && $uscheme eq "https") {
679	# oh dear, we have to wrap it into a connect request	891	# oh dear, we have to wrap it into a connect request
680		892
681	# maybe re-use $uauthority with patched port?	893	# maybe re-use $uauthority with patched port?
682	$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");
683	$state{handle}->push_read (line => $qr_nlnl, sub {	895	$state{handle}->push_read (line => $qr_nlnl, sub {
684	$_[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
685	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])" }));
686		898
687	if ($2 == 200) {	899	if ($2 == 200) {
688	$rpath = $upath;	900	$rpath = $upath;
689	&$handle_actual_request;	901	&$handle_actual_request;
690	} else {	902	} else {
691	%state = ();	903	%state = ();
692	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	904	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
693	}	905	}
694	});	906	});
695	} else {	907	} else {
696	&$handle_actual_request;	908	&$handle_actual_request;
697	}	909	}
698
699	}, sub {
700	$timeout
701	};	910	};
		911
		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 { $timeout });
		916
702	};	917	};
703		918
704	defined wantarray && AnyEvent::Util::guard { %state = () }	919	defined wantarray && AnyEvent::Util::guard { %state = () }
705	}	920	}
706		921
…		…
720	&http_request	935	&http_request
721	}	936	}
722		937
723	=back	938	=back
724		939
		940	=head2 DNS CACHING
		941
		942	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		943	the actual connection, which in turn uses AnyEvent::DNS to resolve
		944	hostnames. The latter is a simple stub resolver and does no caching
		945	on its own. If you want DNS caching, you currently have to provide
		946	your own default resolver (by storing a suitable resolver object in
		947	C<$AnyEvent::DNS::RESOLVER>).
		948
725	=head2 GLOBAL FUNCTIONS AND VARIABLES	949	=head2 GLOBAL FUNCTIONS AND VARIABLES
726		950
727	=over 4	951	=over 4
728		952
729	=item AnyEvent::HTTP::set_proxy "proxy-url"	953	=item AnyEvent::HTTP::set_proxy "proxy-url"
730		954
731	Sets the default proxy server to use. The proxy-url must begin with a	955	Sets the default proxy server to use. The proxy-url must begin with a
732	string of the form C<http://host:port> (optionally C<https:...>).	956	string of the form C<http://host:port> (optionally C<https:...>), croaks
		957	otherwise.
		958
		959	To clear an already-set proxy, use C<undef>.
		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.
733		971
734	=item $AnyEvent::HTTP::MAX_RECURSE	972	=item $AnyEvent::HTTP::MAX_RECURSE
735		973
736	The default value for the C<recurse> request parameter (default: C<10>).	974	The default value for the C<recurse> request parameter (default: C<10>).
737		975
…		…
740	The default value for the C<User-Agent> header (the default is	978	The default value for the C<User-Agent> header (the default is
741	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	979	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
742		980
743	=item $AnyEvent::HTTP::MAX_PER_HOST	981	=item $AnyEvent::HTTP::MAX_PER_HOST
744		982
745	The maximum number of concurrent conenctions to the same host (identified	983	The maximum number of concurrent connections to the same host (identified
746	by the hostname). If the limit is exceeded, then the additional requests	984	by the hostname). If the limit is exceeded, then the additional requests
747	are queued until previous connections are closed.	985	are queued until previous connections are closed.
748		986
749	The default value for this is C<4>, and it is highly advisable to not	987	The default value for this is C<4>, and it is highly advisable to not
750	increase it.	988	increase it.
…		…
757		995
758	=back	996	=back
759		997
760	=cut	998	=cut
761		999
		1000	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1001	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1002
		1003	sub format_date($) {
		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, $_, $y);
		1039	}
		1040	}
		1041
		1042	undef
		1043	}
		1044
762	sub set_proxy($) {	1045	sub set_proxy($) {
		1046	if (length $_[0]) {
763	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1047	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1048	or Carp::croak "$_[0]: invalid proxy URL";
		1049	$PROXY = [$2, $3 \|\| 3128, $1]
		1050	} else {
		1051	undef $PROXY;
		1052	}
764	}	1053	}
765		1054
766	# initialise proxy from environment	1055	# initialise proxy from environment
		1056	eval {
767	set_proxy $ENV{http_proxy};	1057	set_proxy $ENV{http_proxy};
		1058	};
		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	};
768		1115
769	=head1 SEE ALSO	1116	=head1 SEE ALSO
770		1117
771	L<AnyEvent>.	1118	L<AnyEvent>.
772		1119

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC vs. Revision 1.77 by root, Sat Jan 1 19:13:41 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC vs.
Revision 1.77 by root, Sat Jan 1 19:13:41 2011 UTC