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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs.
Revision 1.71 by root, Fri Dec 31 20:50:58 2010 UTC

…		…
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Carp;	44	use Errno ();
45		45
46	use AnyEvent 4.452 ();	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 = '1.12';	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;
59	our $MAX_PERSISTENT = 8;	58	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	59	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	60	our $TIMEOUT = 300;
62		61
63	# changing these is evil	62	# changing these is evil
64	our $MAX_PERSISTENT_PER_HOST = 2;	63	our $MAX_PERSISTENT_PER_HOST = 0;
65	our $MAX_PER_HOST = 4;	64	our $MAX_PER_HOST = 4;
66		65
67	our $PROXY;	66	our $PROXY;
68	our $ACTIVE = 0;	67	our $ACTIVE = 0;
69		68
…		…
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 data as first argument	98	The callback will be called with the response body data as first argument
100	(or C<undef> if it wasn't available due to errors), and a hash-ref with	99	(or C<undef> if an error occured), and a hash-ref with response headers
101	response headers as 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<< $headers->{Status} >> will be C<599>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
114	and the C<Reason> pseudo-header will contain an error message.	128	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		129	message.
115		130
116	A typical callback might look like this:	131	A typical callback might look like this:
117		132
118	sub {	133	sub {
119	my ($body, $hdr) = @_;	134	my ($body, $hdr) = @_;
…		…
135	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
136	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
137		152
138	=item headers => hashref	153	=item headers => hashref
139		154
140	The request headers to use. Currently, C<http_request> may provide its	155	The request headers to use. Currently, C<http_request> may provide its own
141	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	156	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
142	and will provide defaults for C<User-Agent:> and C<Referer:>.	157	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
		158	(this can be suppressed by using C<undef> for these headers in which case
		159	they won't be sent at all).
143		160
144	=item timeout => $seconds	161	=item timeout => $seconds
145		162
146	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
147	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
148		168
149	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
150		170
151	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
152	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
153		173
154	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	174	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
155	HTTPS.	175	HTTPS.
156		176
157	=item body => $string	177	=item body => $string
158		178
159	The request body, usually empty. Will be-sent as-is (future versions of	179	The request body, usually empty. Will be sent as-is (future versions of
160	this module might offer more options).	180	this module might offer more options).
161		181
162	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
163		183
164	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
165	based on the original netscape specification.	185	based on the original netscape specification.
166		186
167	The C<$hash_ref> must be an (initially empty) hash reference which will	187	The C<$hash_ref> must be an (initially empty) hash reference which will
168	get updated automatically. It is possible to save the cookie_jar to	188	get updated automatically. It is possible to save the cookie jar to
169	persistent storage with something like JSON or Storable, but this is not	189	persistent storage with something like JSON or Storable, but this is not
170	recommended, as expiry times are currently being ignored.	190	recommended, as session-only cookies might survive longer than expected.
171		191
172	Note that this cookie implementation is not of very high quality, nor	192	Note that this cookie implementation is not meant to be complete. If
173	meant to be complete. If you want complete cookie management you have to	193	you want complete cookie management you have to do that on your
174	do that on your own. C<cookie_jar> is meant as a quick fix to get some	194	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
175	cookie-using sites working. Cookies are a privacy disaster, do not use	195	working. Cookies are a privacy disaster, do not use them unless required
176	them unless required to.	196	to.
		197
		198	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		199	headers will be set and handled by this module, otherwise they will be
		200	left untouched.
177		201
178	=item tls_ctx => $scheme \| $tls_ctx	202	=item tls_ctx => $scheme \| $tls_ctx
179		203
180	Specifies the AnyEvent::TLS context to be used for https connections. This	204	Specifies the AnyEvent::TLS context to be used for https connections. This
181	parameter follows the same rules as the C<tls_ctx> parameter to	205	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
185	verification) TLS context.	209	verification) TLS context.
186		210
187	The default for this option is C<low>, which could be interpreted as "give	211	The default for this option is C<low>, which could be interpreted as "give
188	me the page, no matter what".	212	me the page, no matter what".
189		213
		214	=item on_prepare => $callback->($fh)
		215
		216	In rare cases you need to "tune" the socket before it is used to
		217	connect (for exmaple, to bind it on a given IP address). This parameter
		218	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		219	and behaves exactly the same way (e.g. it has to provide a
		220	timeout). See the description for the C<$prepare_cb> argument of
		221	C<AnyEvent::Socket::tcp_connect> for details.
		222
		223	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		224
		225	In even rarer cases you want total control over how AnyEvent::HTTP
		226	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		227	to do this, but you can provide your own C<tcp_connect> function -
		228	obviously, it has to follow the same calling conventions, except that it
		229	may always return a connection guard object.
		230
		231	There are probably lots of weird uses for this function, starting from
		232	tracing the hosts C<http_request> actually tries to connect, to (inexact
		233	but fast) host => IP address caching or even socks protocol support.
		234
		235	=item on_header => $callback->($headers)
		236
		237	When specified, this callback will be called with the header hash as soon
		238	as headers have been successfully received from the remote server (not on
		239	locally-generated errors).
		240
		241	It has to return either true (in which case AnyEvent::HTTP will continue),
		242	or false, in which case AnyEvent::HTTP will cancel the download (and call
		243	the finish callback with an error code of C<598>).
		244
		245	This callback is useful, among other things, to quickly reject unwanted
		246	content, which, if it is supposed to be rare, can be faster than first
		247	doing a C<HEAD> request.
		248
		249	The downside is that cancelling the request makes it impossible to re-use
		250	the connection. Also, the C<on_header> callback will not receive any
		251	trailer (headers sent after the response body).
		252
		253	Example: cancel the request unless the content-type is "text/html".
		254
		255	on_header => sub {
		256	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		257	},
		258
		259	=item on_body => $callback->($partial_body, $headers)
		260
		261	When specified, all body data will be passed to this callback instead of
		262	to the completion callback. The completion callback will get the empty
		263	string instead of the body data.
		264
		265	It has to return either true (in which case AnyEvent::HTTP will continue),
		266	or false, in which case AnyEvent::HTTP will cancel the download (and call
		267	the completion callback with an error code of C<598>).
		268
		269	The downside to cancelling the request is that it makes it impossible to
		270	re-use the connection.
		271
		272	This callback is useful when the data is too large to be held in memory
		273	(so the callback writes it to a file) or when only some information should
		274	be extracted, or when the body should be processed incrementally.
		275
		276	It is usually preferred over doing your own body handling via
		277	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		278	only used to create a connection, C<want_body_handle> is the better
		279	alternative, as it allows you to install your own event handler, reducing
		280	resource usage.
		281
		282	=item want_body_handle => $enable
		283
		284	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		285	changes considerably: after parsing the headers, and instead of
		286	downloading the body (if any), the completion callback will be
		287	called. Instead of the C<$body> argument containing the body data, the
		288	callback will receive the L<AnyEvent::Handle> object associated with the
		289	connection. In error cases, C<undef> will be passed. When there is no body
		290	(e.g. status C<304>), the empty string will be passed.
		291
		292	The handle object might or might not be in TLS mode, might be connected to
		293	a proxy, be a persistent connection etc., and configured in unspecified
		294	ways. The user is responsible for this handle (it will not be used by this
		295	module anymore).
		296
		297	This is useful with some push-type services, where, after the initial
		298	headers, an interactive protocol is used (typical example would be the
		299	push-style twitter API which starts a JSON/XML stream).
		300
		301	If you think you need this, first have a look at C<on_body>, to see if
		302	that doesn't solve your problem in a better way.
		303
190	=back	304	=back
191		305
192	Example: make a simple HTTP GET request for http://www.nethype.de/	306	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		307	the response body.
193		308
194	http_request GET => "http://www.nethype.de/", sub {	309	http_request GET => "http://www.nethype.de/", sub {
195	my ($body, $hdr) = @_;	310	my ($body, $hdr) = @_;
196	print "$body\n";	311	print "$body\n";
197	};	312	};
198		313
199	Example: make a HTTP HEAD request on https://www.google.com/, use a	314	Example: do a HTTP HEAD request on https://www.google.com/, use a
200	timeout of 30 seconds.	315	timeout of 30 seconds.
201		316
202	http_request	317	http_request
203	GET => "https://www.google.com",	318	GET => "https://www.google.com",
204	timeout => 30,	319	timeout => 30,
…		…
207	use Data::Dumper;	322	use Data::Dumper;
208	print Dumper $hdr;	323	print Dumper $hdr;
209	}	324	}
210	;	325	;
211		326
212	Example: make another simple HTTP GET request, but immediately try to	327	Example: do another simple HTTP GET request, but immediately try to
213	cancel it.	328	cancel it.
214		329
215	my $request = http_request GET => "http://www.nethype.de/", sub {	330	my $request = http_request GET => "http://www.nethype.de/", sub {
216	my ($body, $hdr) = @_;	331	my ($body, $hdr) = @_;
217	print "$body\n";	332	print "$body\n";
…		…
249	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	364	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
250		365
251	_slot_schedule $_[0];	366	_slot_schedule $_[0];
252	}	367	}
253		368
254	our $qr_nl = qr<\015?\012>;	369	sub cookie_jar_extract($$$$) {
255	our $qr_nlnl = qr<\015?\012\015?\012>;	370	my ($jar, $uscheme, $uhost, $upath) = @_;
256		371
		372	%$jar = () if $jar->{version} != 1;
		373
		374	my @cookies;
		375
		376	while (my ($chost, $paths) = each %$jar) {
		377	next unless ref $paths;
		378
		379	if ($chost =~ /^\./) {
		380	next unless $chost eq substr $uhost, -length $chost;
		381	} elsif ($chost =~ /\./) {
		382	next unless $chost eq $uhost;
		383	} else {
		384	next;
		385	}
		386
		387	while (my ($cpath, $cookies) = each %$paths) {
		388	next unless $cpath eq substr $upath, 0, length $cpath;
		389
		390	while (my ($cookie, $kv) = each %$cookies) {
		391	next if $uscheme ne "https" && exists $kv->{secure};
		392
		393	if (exists $kv->{expires}) {
		394	if (AE::now > parse_date ($kv->{expires})) {
		395	delete $cookies->{$cookie};
		396	next;
		397	}
		398	}
		399
		400	my $value = $kv->{value};
		401
		402	if ($value =~ /[=;,[:space:]]/) {
		403	$value =~ s/([\\"])/\\$1/g;
		404	$value = "\"$value\"";
		405	}
		406
		407	push @cookies, "$cookie=$value";
		408	}
		409	}
		410	}
		411
		412	\@cookies
		413	}
		414
		415	# continue to parse $_ for headers and place them into the arg
		416	sub parse_hdr() {
		417	my %hdr;
		418
		419	# things seen, not parsed:
		420	# p3pP="NON CUR OTPi OUR NOR UNI"
		421
		422	$hdr{lc $1} .= ",$2"
		423	while /\G
		424	([^:\000-\037]*):
		425	[\011\040]*
		426	((?: [^\012]+ \| \012[\011\040] )*)
		427	\012
		428	/gxc;
		429
		430	/\G$/
		431	or return;
		432
		433	# remove the "," prefix we added to all headers above
		434	substr $_, 0, 1, ""
		435	for values %hdr;
		436
		437	\%hdr
		438	}
		439
		440	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		441
257	our $TLS_CTX_LOW = { cache => 1, dh => undef, sslv2 => 1 };	442	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
258	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_cn => "https", dh => "skip4096" };	443	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
259		444
260	sub http_request($$@) {	445	sub http_request($$@) {
261	my $cb = pop;	446	my $cb = pop;
262	my ($method, $url, %arg) = @_;	447	my ($method, $url, %arg) = @_;
263		448
…		…
272	while (my ($k, $v) = each %$hdr) {	457	while (my ($k, $v) = each %$hdr) {
273	$hdr{lc $k} = $v;	458	$hdr{lc $k} = $v;
274	}	459	}
275	}	460	}
276		461
		462	# pseudo headers for all subsequent responses
		463	my @pseudo = (URL => $url);
		464	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		465
277	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	466	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
278		467
279	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	468	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
280	if $recurse < 0;	469	if $recurse < 0;
281		470
282	my $proxy = $arg{proxy} \|\| $PROXY;	471	my $proxy = $arg{proxy} \|\| $PROXY;
283	my $timeout = $arg{timeout} \|\| $TIMEOUT;	472	my $timeout = $arg{timeout} \|\| $TIMEOUT;
284		473
285	$hdr{"user-agent"} \|\|= $USERAGENT;
286
287	my ($uscheme, $uauthority, $upath, $query, $fragment) =	474	my ($uscheme, $uauthority, $upath, $query, $fragment) =
288	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	475	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
289		476
290	$uscheme = lc $uscheme;	477	$uscheme = lc $uscheme;
291		478
292	my $uport = $uscheme eq "http" ? 80	479	my $uport = $uscheme eq "http" ? 80
293	: $uscheme eq "https" ? 443	480	: $uscheme eq "https" ? 443
294	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported (not '$uscheme')", URL => $url });	481	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
295
296	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
297		482
298	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	483	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
299	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	484	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
300		485
301	my $uhost = $1;	486	my $uhost = $1;
302	$uport = $2 if defined $2;	487	$uport = $2 if defined $2;
303		488
		489	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		490	unless exists $hdr{host};
		491
304	$uhost =~ s/^\[(.*)\]$/$1/;	492	$uhost =~ s/^\[(.*)\]$/$1/;
305	$upath .= "?$query" if length $query;	493	$upath .= $query if length $query;
306		494
307	$upath =~ s%^/?%/%;	495	$upath =~ s%^/?%/%;
308		496
309	# cookie processing	497	# cookie processing
310	if (my $jar = $arg{cookie_jar}) {	498	if (my $jar = $arg{cookie_jar}) {
311	%$jar = () if $jar->{version} != 1;	499	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
312		500
313	my @cookie;
314
315	while (my ($chost, $v) = each %$jar) {
316	if ($chost =~ /^\./) {
317	next unless $chost eq substr $uhost, -length $chost;
318	} elsif ($chost =~ /\./) {
319	next unless $chost eq $uhost;
320	} else {
321	next;
322	}
323
324	while (my ($cpath, $v) = each %$v) {
325	next unless $cpath eq substr $upath, 0, length $cpath;
326
327	while (my ($k, $v) = each %$v) {
328	next if $uscheme ne "https" && exists $v->{secure};
329	my $value = $v->{value};
330	$value =~ s/([\\"])/\\$1/g;
331	push @cookie, "$k=\"$value\"";
332	}
333	}
334	}
335
336	$hdr{cookie} = join "; ", @cookie	501	$hdr{cookie} = join "; ", @$cookies
337	if @cookie;	502	if @$cookies;
338	}	503	}
339		504
340	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	505	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
341		506
342	if ($proxy) {	507	if ($proxy) {
343	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	508	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
		509
		510	$rscheme = "http" unless defined $rscheme;
344		511
345	# don't support https requests over https-proxy transport,	512	# don't support https requests over https-proxy transport,
346	# can't be done with tls as spec'ed, unless you double-encrypt.	513	# can't be done with tls as spec'ed, unless you double-encrypt.
347	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	514	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
348	} else {	515	} else {
349	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	516	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
350	}	517	}
351		518
352	$hdr{host} = $uhost;	519	# leave out fragment and query string, just a heuristic
		520	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		521	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		522
353	$hdr{"content-length"} = length $arg{body};	523	$hdr{"content-length"} = length $arg{body}
		524	if length $arg{body} \|\| $method ne "GET";
		525
		526	$hdr{connection} = "close TE"; #1.1
		527	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
354		528
355	my %state = (connect_guard => 1);	529	my %state = (connect_guard => 1);
356		530
357	_get_slot $uhost, sub {	531	_get_slot $uhost, sub {
358	$state{slot_guard} = shift;	532	$state{slot_guard} = shift;
359		533
360	return unless $state{connect_guard};	534	return unless $state{connect_guard};
361		535
362	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	536	my $connect_cb = sub {
363	$state{fh} = shift	537	$state{fh} = shift
364	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));	538	or do {
		539	my $err = "$!";
		540	%state = ();
		541	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		542	};
		543
365	pop; # free memory, save a tree	544	pop; # free memory, save a tree
366		545
367	return unless delete $state{connect_guard};	546	return unless delete $state{connect_guard};
368		547
369	# get handle	548	# get handle
370	$state{handle} = new AnyEvent::Handle	549	$state{handle} = new AnyEvent::Handle
371	fh => $state{fh},	550	fh => $state{fh},
		551	peername => $rhost,
		552	tls_ctx => $arg{tls_ctx},
		553	# these need to be reconfigured on keepalive handles
372	timeout => $timeout,	554	timeout => $timeout,
373	peername => $rhost,	555	on_error => sub {
374	tls_ctx => $arg{tls_ctx};	556	%state = ();
		557	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		558	},
		559	on_eof => sub {
		560	%state = ();
		561	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		562	},
		563	;
375		564
376	# limit the number of persistent connections	565	# limit the number of persistent connections
377	# keepalive not yet supported	566	# keepalive not yet supported
378	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	567	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
379	++$KA_COUNT{$_[1]};	568	# ++$KA_COUNT{$_[1]};
380	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	569	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
381	--$KA_COUNT{$_[1]}	570	# --$KA_COUNT{$_[1]}
382	};	571	# };
383	$hdr{connection} = "keep-alive";	572	# $hdr{connection} = "keep-alive";
384	} else {
385	delete $hdr{connection};
386	}	573	# }
387
388	# (re-)configure handle
389	$state{handle}->on_error (sub {
390	%state = ();
391	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
392	});
393	$state{handle}->on_eof (sub {
394	%state = ();
395	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
396	});
397		574
398	$state{handle}->starttls ("connect") if $rscheme eq "https";	575	$state{handle}->starttls ("connect") if $rscheme eq "https";
399		576
400	# handle actual, non-tunneled, request	577	# handle actual, non-tunneled, request
401	my $handle_actual_request = sub {	578	my $handle_actual_request = sub {
402	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	579	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
403		580
404	# send request	581	# send request
405	$state{handle}->push_write (	582	$state{handle}->push_write (
406	"$method $rpath HTTP/1.0\015\012"	583	"$method $rpath HTTP/1.1\015\012"
407	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	584	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
408	. "\015\012"	585	. "\015\012"
409	. (delete $arg{body})	586	. (delete $arg{body})
410	);	587	);
411		588
		589	# return if error occured during push_write()
		590	return unless %state;
		591
412	%hdr = (); # reduce memory usage, save a kitten	592	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
413		593
414	# status line	594	# status line and headers
415	$state{handle}->push_read (line => $qr_nl, sub {	595	$state{read_response} = sub {
416	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
417	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
418
419	my %hdr = ( # response headers
420	HTTPVersion => ",$1",
421	Status => ",$2",
422	Reason => ",$3",
423	URL => ",$url"
424	);
425
426	# headers, could be optimized a bit
427	$state{handle}->unshift_read (line => $qr_nlnl, sub {
428	for ("$_[1]\012") {	596	for ("$_[1]") {
429	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	597	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
430		598
431	# things seen, not parsed:	599	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
432	# p3pP="NON CUR OTPi OUR NOR UNI"	600	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
433		601
434	$hdr{lc $1} .= ",$2"	602	# 100 Continue handling
435	while /\G	603	# should not happen as we don't send expect: 100-continue,
436	([^:\000-\037]+):	604	# but we handle it just in case.
437	[\011\040]*	605	# since we send the request body regardless, if we get an error
438	((?: [^\012]+ \| \012[\011\040] )*)	606	# we are out of-sync, which we currently do NOT handle correctly.
439	\012	607	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
440	/gxc;	608	if $2 eq 100;
441		609
		610	push @pseudo,
		611	HTTPVersion => $1,
		612	Status => $2,
		613	Reason => $3,
442	/\G$/	614	;
		615
		616	my $hdr = parse_hdr
443	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));	617	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		618
		619	%hdr = (%$hdr, @pseudo);
		620	}
		621
		622	# redirect handling
		623	# microsoft and other shitheads don't give a shit for following standards,
		624	# try to support some common forms of broken Location headers.
		625	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		626	$hdr{location} =~ s/^\.\/+//;
		627
		628	my $url = "$rscheme://$uhost:$uport";
		629
		630	unless ($hdr{location} =~ s/^\///) {
		631	$url .= $upath;
		632	$url =~ s/\/[^\/]*$//;
444	}	633	}
445		634
446	substr $_, 0, 1, ""	635	$hdr{location} = "$url/$hdr{location}";
447	for values %hdr;	636	}
448		637
449	my $finish = sub {	638	my $redirect;
		639
		640	if ($recurse) {
		641	my $status = $hdr{Status};
		642
		643	# industry standard is to redirect POST as GET for
		644	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		645	# also, the UA should ask the user for 301 and 307 and POST,
		646	# industry standard seems to be to simply follow.
		647	# we go with the industry standard.
		648	if ($status == 301 or $status == 302 or $status == 303) {
		649	# HTTP/1.1 is unclear on how to mutate the method
		650	$method = "GET" unless $method eq "HEAD";
		651	$redirect = 1;
		652	} elsif ($status == 307) {
		653	$redirect = 1;
		654	}
		655	}
		656
		657	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		658	my $keepalive = pop;
		659
450	$state{handle}->destroy;	660	$state{handle}->destroy if $state{handle};
451	%state = ();	661	%state = ();
452		662
		663	if (defined $_[1]) {
		664	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		665	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		666	}
		667
453	# set-cookie processing	668	# set-cookie processing
454	if ($arg{cookie_jar}) {	669	if ($arg{cookie_jar}) {
455	for ($hdr{"set-cookie"}) {	670	for ($hdr{"set-cookie"}) {
456	# parse NAME=VALUE	671	# parse NAME=VALUE
457	my @kv;	672	my @kv;
458		673
		674	while (
		675	m{
		676	\G\s*
		677	(?:
		678	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
459	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {	679	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		680	)
		681	}gcxsi
		682	) {
460	my $name = $1;	683	my $name = $2;
		684	my $value = $4;
		685
		686	unless (defined $name) {
		687	# expires
		688	$name = "expires";
		689	$value = $1;
		690	} elsif (!defined $value) {
		691	# quoted
461	my $value = $3;	692	$value = $3;
462
463	unless ($value) {
464	$value = $2;
465	$value =~ s/\\(.)/$1/gs;	693	$value =~ s/\\(.)/$1/gs;
		694	}
		695
		696	push @kv, lc $name, $value;
		697
		698	last unless /\G\s*;/gc;
		699	}
		700
		701	last unless @kv;
		702
		703	my $name = shift @kv;
		704	my %kv = (value => shift @kv, @kv);
		705
		706	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		707	if exists $kv{"max-age"};
		708
		709	my $cdom;
		710	my $cpath = (delete $kv{path}) \|\| "/";
		711
		712	if (exists $kv{domain}) {
		713	$cdom = delete $kv{domain};
		714
		715	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		716
		717	next if $cdom =~ /\.$/;
		718
		719	# this is not rfc-like and not netscape-like. go figure.
		720	my $ndots = $cdom =~ y/.//;
		721	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		722	} else {
		723	$cdom = $uhost;
		724	}
		725
		726	# store it
		727	$arg{cookie_jar}{version} = 1;
		728	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		729
		730	redo if /\G\s*,/gc;
		731	}
		732	}
		733
		734	if ($redirect && exists $hdr{location}) {
		735	# we ignore any errors, as it is very common to receive
		736	# Content-Length != 0 but no actual body
		737	# we also access %hdr, as $_[1] might be an erro
		738	http_request (
		739	$method => $hdr{location},
		740	%arg,
		741	recurse => $recurse - 1,
		742	Redirect => [$_[0], \%hdr],
		743	$cb);
		744	} else {
		745	$cb->($_[0], \%hdr);
		746	}
		747	};
		748
		749	my $len = $hdr{"content-length"};
		750
		751	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		752	$finish->(undef, 598 => "Request cancelled by on_header");
		753	} elsif (
		754	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		755	or $method eq "HEAD"
		756	or (defined $len && !$len)
		757	) {
		758	# no body
		759	$finish->("", undef, undef, 1);
		760	} else {
		761	# body handling, many different code paths
		762	# - no body expected
		763	# - want_body_handle
		764	# - te chunked
		765	# - 2x length known (with or without on_body)
		766	# - 2x length not known (with or without on_body)
		767	if (!$redirect && $arg{want_body_handle}) {
		768	$_[0]->on_eof (undef);
		769	$_[0]->on_error (undef);
		770	$_[0]->on_read (undef);
		771
		772	$finish->(delete $state{handle});
		773
		774	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		775	my $cl = 0;
		776	my $body = undef;
		777	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		778
		779	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		780
		781	my $read_chunk; $read_chunk = sub {
		782	$_[1] =~ /^([0-9a-fA-F]+)/
		783	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		784
		785	my $len = hex $1;
		786
		787	if ($len) {
		788	$cl += $len;
		789
		790	$_[0]->push_read (chunk => $len, sub {
		791	$on_body->($_[1], \%hdr)
		792	or return $finish->(undef, 598 => "Request cancelled by on_body");
		793
		794	$_[0]->push_read (line => sub {
		795	length $_[1]
		796	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		797	$_[0]->push_read (line => $read_chunk);
		798	});
		799	});
		800	} else {
		801	$hdr{"content-length"} \|\|= $cl;
		802
		803	$_[0]->push_read (line => $qr_nlnl, sub {
		804	if (length $_[1]) {
		805	for ("$_[1]") {
		806	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		807
		808	my $hdr = parse_hdr
		809	or return $finish->(undef, 599 => "Garbled response trailers");
		810
		811	%hdr = (%hdr, %$hdr);
		812	}
466	}	813	}
467		814
468	push @kv, $name => $value;	815	$finish->($body, undef, undef, 1);
469
470	last unless /\G\s*;/gc;
471	}	816	});
472
473	last unless @kv;
474
475	my $name = shift @kv;
476	my %kv = (value => shift @kv, @kv);
477
478	my $cdom;
479	my $cpath = (delete $kv{path}) \|\| "/";
480
481	if (exists $kv{domain}) {
482	$cdom = delete $kv{domain};
483
484	$cdom =~ s/^\.?/./; # make sure it starts with a "."
485
486	next if $cdom =~ /\.$/;
487
488	# this is not rfc-like and not netscape-like. go figure.
489	my $ndots = $cdom =~ y/.//;
490	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
491	} else {
492	$cdom = $uhost;
493	}
494
495	# store it
496	$arg{cookie_jar}{version} = 1;
497	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
498
499	redo if /\G\s*,/gc;
500	}	817	}
501	}	818	};
502		819
503	# microsoft and other shitheads don't give a shit for following standards,	820	$_[0]->push_read (line => $read_chunk);
504	# try to support some common forms of broken Location headers.
505	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
506	$_[1]{location} =~ s/^\.\/+//;
507		821
508	my $url = "$rscheme://$uhost:$uport";	822	} elsif ($arg{on_body}) {
		823	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
509		824
510	unless ($_[1]{location} =~ s/^\///) {
511	$url .= $upath;
512	$url =~ s/\/[^\/]*$//;
513	}
514
515	$_[1]{location} = "$url/$_[1]{location}";
516	}
517
518	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
519	# apparently, mozilla et al. just change POST to GET here
520	# more research is needed before we do the same
521	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
522	} elsif ($_[1]{Status} == 303 && $recurse) {
523	# even http/1.1 is unclear on how to mutate the method
524	$method = "GET" unless $method eq "HEAD";
525	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
526	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
527	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
528	} else {	825	if ($len) {
529	$cb->($_[0], $_[1]);	826	$_[0]->on_read (sub {
530	}	827	$len -= length $_[0]{rbuf};
531	};
532		828
533	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	829	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
534	$finish->(undef, \%hdr);	830	or return $finish->(undef, 598 => "Request cancelled by on_body");
535	} else {	831
536	if (exists $hdr{"content-length"}) {
537	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
538	# could cache persistent connection now
539	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
540	# but we don't, due to misdesigns, this is annoyingly complex
541	};	832	$len > 0
542		833	or $finish->("", undef, undef, 1);
543	$finish->($_[1], \%hdr);
544	});	834	});
545	} else {	835	} else {
546	# too bad, need to read until we get an error or EOF,	836	$_[0]->on_eof (sub {
547	# no way to detect winged data.	837	$finish->("");
		838	});
		839	$_[0]->on_read (sub {
		840	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		841	or $finish->(undef, 598 => "Request cancelled by on_body");
		842	});
		843	}
		844	} else {
		845	$_[0]->on_eof (undef);
		846
		847	if ($len) {
		848	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		849	$_[0]->on_read (sub {
		850	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		851	if $len <= length $_[0]{rbuf};
		852	});
		853	} else {
548	$_[0]->on_error (sub {	854	$_[0]->on_error (sub {
549	# delete ought to be more efficient, as we would have to make	855	($! == Errno::EPIPE \|\| !$!)
550	# a copy otherwise as $_[0] gets destroyed.
551	$finish->(delete $_[0]{rbuf}, \%hdr);	856	? $finish->(delete $_[0]{rbuf})
		857	: $finish->(undef, 599 => $_[2]);
552	});	858	});
553	$_[0]->on_eof (undef);
554	$_[0]->on_read (sub { });	859	$_[0]->on_read (sub { });
555	}	860	}
556	}	861	}
557	});	862	}
558	});	863	};
		864
		865	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
559	};	866	};
560		867
561	# now handle proxy-CONNECT method	868	# now handle proxy-CONNECT method
562	if ($proxy && $uscheme eq "https") {	869	if ($proxy && $uscheme eq "https") {
563	# oh dear, we have to wrap it into a connect request	870	# oh dear, we have to wrap it into a connect request
564		871
565	# maybe re-use $uauthority with patched port?	872	# maybe re-use $uauthority with patched port?
566	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	873	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
567	$state{handle}->push_read (line => $qr_nlnl, sub {	874	$state{handle}->push_read (line => $qr_nlnl, sub {
568	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	875	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
569	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	876	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
570		877
571	if ($2 == 200) {	878	if ($2 == 200) {
572	$rpath = $upath;	879	$rpath = $upath;
573	&$handle_actual_request;	880	&$handle_actual_request;
574	} else {	881	} else {
575	%state = ();	882	%state = ();
576	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	883	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
577	}	884	}
578	});	885	});
579	} else {	886	} else {
580	&$handle_actual_request;	887	&$handle_actual_request;
581	}	888	}
582
583	}, sub {
584	$timeout
585	};	889	};
		890
		891	my $tcp_connect = $arg{tcp_connect}
		892	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		893
		894	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		895
586	};	896	};
587		897
588	defined wantarray && AnyEvent::Util::guard { %state = () }	898	defined wantarray && AnyEvent::Util::guard { %state = () }
589	}	899	}
590		900
…		…
604	&http_request	914	&http_request
605	}	915	}
606		916
607	=back	917	=back
608		918
		919	=head2 DNS CACHING
		920
		921	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		922	the actual connection, which in turn uses AnyEvent::DNS to resolve
		923	hostnames. The latter is a simple stub resolver and does no caching
		924	on its own. If you want DNS caching, you currently have to provide
		925	your own default resolver (by storing a suitable resolver object in
		926	C<$AnyEvent::DNS::RESOLVER>).
		927
609	=head2 GLOBAL FUNCTIONS AND VARIABLES	928	=head2 GLOBAL FUNCTIONS AND VARIABLES
610		929
611	=over 4	930	=over 4
612		931
613	=item AnyEvent::HTTP::set_proxy "proxy-url"	932	=item AnyEvent::HTTP::set_proxy "proxy-url"
614		933
615	Sets the default proxy server to use. The proxy-url must begin with a	934	Sets the default proxy server to use. The proxy-url must begin with a
616	string of the form C<http://host:port> (optionally C<https:...>).	935	string of the form C<http://host:port> (optionally C<https:...>), croaks
		936	otherwise.
		937
		938	To clear an already-set proxy, use C<undef>.
		939
		940	=item $date = AnyEvent::HTTP::format_date $timestamp
		941
		942	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		943	Date (RFC 2616).
		944
		945	=item $timestamp = AnyEvent::HTTP::parse_date $date
		946
		947	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
		948	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		949	be parsed.
617		950
618	=item $AnyEvent::HTTP::MAX_RECURSE	951	=item $AnyEvent::HTTP::MAX_RECURSE
619		952
620	The default value for the C<recurse> request parameter (default: C<10>).	953	The default value for the C<recurse> request parameter (default: C<10>).
621		954
622	=item $AnyEvent::HTTP::USERAGENT	955	=item $AnyEvent::HTTP::USERAGENT
623		956
624	The default value for the C<User-Agent> header (the default is	957	The default value for the C<User-Agent> header (the default is
625	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	958	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
626		959
627	=item $AnyEvent::HTTP::MAX_PERSISTENT	960	=item $AnyEvent::HTTP::MAX_PER_HOST
628		961
629	The maximum number of persistent connections to keep open (default: 8).	962	The maximum number of concurrent connections to the same host (identified
		963	by the hostname). If the limit is exceeded, then the additional requests
		964	are queued until previous connections are closed.
630		965
631	Not implemented currently.	966	The default value for this is C<4>, and it is highly advisable to not
632		967	increase it.
633	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
634
635	The maximum time to cache a persistent connection, in seconds (default: 2).
636
637	Not implemented currently.
638		968
639	=item $AnyEvent::HTTP::ACTIVE	969	=item $AnyEvent::HTTP::ACTIVE
640		970
641	The number of active connections. This is not the number of currently	971	The number of active connections. This is not the number of currently
642	running requests, but the number of currently open and non-idle TCP	972	running requests, but the number of currently open and non-idle TCP
…		…
644		974
645	=back	975	=back
646		976
647	=cut	977	=cut
648		978
		979	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		980	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		981
		982	sub format_date($) {
		983	my ($time) = @_;
		984
		985	# RFC 822/1123 format
		986	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		987
		988	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		989	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		990	$H, $M, $S;
		991	}
		992
		993	sub parse_date($) {
		994	my ($date) = @_;
		995
		996	my ($d, $m, $y, $H, $M, $S);
		997
		998	if ($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$/) {
		999	# RFC 822/1123, required by RFC 2616 (with " ")
		1000	# cookie dates (with "-")
		1001
		1002	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1003
		1004	} elsif ($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$/) {
		1005	# RFC 850
		1006	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1007
		1008	} elsif ($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])$/) {
		1009	# ISO C's asctime
		1010	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1011	}
		1012	# other formats fail in the loop below
		1013
		1014	for (0..11) {
		1015	if ($m eq $month[$_]) {
		1016	require Time::Local;
		1017	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1018	}
		1019	}
		1020
		1021	undef
		1022	}
		1023
649	sub set_proxy($) {	1024	sub set_proxy($) {
		1025	if (length $_[0]) {
650	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	1026	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		1027	or Carp::croak "$_[0]: invalid proxy URL";
		1028	$PROXY = [$2, $3 \|\| 3128, $1]
		1029	} else {
		1030	undef $PROXY;
		1031	}
651	}	1032	}
652		1033
653	# initialise proxy from environment	1034	# initialise proxy from environment
		1035	eval {
654	set_proxy $ENV{http_proxy};	1036	set_proxy $ENV{http_proxy};
		1037	};
		1038
		1039	=head2 SOCKS PROXIES
		1040
		1041	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1042	compile your perl to support socks, or use an external program such as
		1043	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1044	transparently.
		1045
		1046	Alternatively, for AnyEvent::HTTP only, you can use your own
		1047	C<tcp_connect> function that does the proxy handshake - here is an example
		1048	that works with socks4a proxies:
		1049
		1050	use Errno;
		1051	use AnyEvent::Util;
		1052	use AnyEvent::Socket;
		1053	use AnyEvent::Handle;
		1054
		1055	# host, port and username of/for your socks4a proxy
		1056	my $socks_host = "10.0.0.23";
		1057	my $socks_port = 9050;
		1058	my $socks_user = "";
		1059
		1060	sub socks4a_connect {
		1061	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1062
		1063	my $hdl = new AnyEvent::Handle
		1064	connect => [$socks_host, $socks_port],
		1065	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1066	on_error => sub { $connect_cb->() },
		1067	;
		1068
		1069	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1070
		1071	$hdl->push_read (chunk => 8, sub {
		1072	my ($hdl, $chunk) = @_;
		1073	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1074
		1075	if ($status == 0x5a) {
		1076	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1077	} else {
		1078	$! = Errno::ENXIO; $connect_cb->();
		1079	}
		1080	});
		1081
		1082	$hdl
		1083	}
		1084
		1085	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1086	possibly after switching off other proxy types:
		1087
		1088	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1089
		1090	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1091	my ($data, $headers) = @_;
		1092	...
		1093	};
655		1094
656	=head1 SEE ALSO	1095	=head1 SEE ALSO
657		1096
658	L<AnyEvent>.	1097	L<AnyEvent>.
659		1098

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs. Revision 1.71 by root, Fri Dec 31 20:50:58 2010 UTC

Diff Legend

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs.
Revision 1.71 by root, Fri Dec 31 20:50:58 2010 UTC