[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 1.68 by root, Fri Dec 31 19:22:18 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 for C<TE:>, C<Referer:> and C<User-Agent:> (this can
		158	be suppressed by using C<undef> for these headers in which case they won't
		159	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
…		…
185	verification) TLS context.	205	verification) TLS context.
186		206
187	The default for this option is C<low>, which could be interpreted as "give	207	The default for this option is C<low>, which could be interpreted as "give
188	me the page, no matter what".	208	me the page, no matter what".
189		209
		210	=item on_prepare => $callback->($fh)
		211
		212	In rare cases you need to "tune" the socket before it is used to
		213	connect (for exmaple, to bind it on a given IP address). This parameter
		214	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		215	and behaves exactly the same way (e.g. it has to provide a
		216	timeout). See the description for the C<$prepare_cb> argument of
		217	C<AnyEvent::Socket::tcp_connect> for details.
		218
		219	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		220
		221	In even rarer cases you want total control over how AnyEvent::HTTP
		222	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		223	to do this, but you can provide your own C<tcp_connect> function -
		224	obviously, it has to follow the same calling conventions, except that it
		225	may always return a connection guard object.
		226
		227	There are probably lots of weird uses for this function, starting from
		228	tracing the hosts C<http_request> actually tries to connect, to (inexact
		229	but fast) host => IP address caching or even socks protocol support.
		230
		231	=item on_header => $callback->($headers)
		232
		233	When specified, this callback will be called with the header hash as soon
		234	as headers have been successfully received from the remote server (not on
		235	locally-generated errors).
		236
		237	It has to return either true (in which case AnyEvent::HTTP will continue),
		238	or false, in which case AnyEvent::HTTP will cancel the download (and call
		239	the finish callback with an error code of C<598>).
		240
		241	This callback is useful, among other things, to quickly reject unwanted
		242	content, which, if it is supposed to be rare, can be faster than first
		243	doing a C<HEAD> request.
		244
		245	The downside is that cancelling the request makes it impossible to re-use
		246	the connection. Also, the C<on_header> callback will not receive any
		247	trailer (headers sent after the response body).
		248
		249	Example: cancel the request unless the content-type is "text/html".
		250
		251	on_header => sub {
		252	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		253	},
		254
		255	=item on_body => $callback->($partial_body, $headers)
		256
		257	When specified, all body data will be passed to this callback instead of
		258	to the completion callback. The completion callback will get the empty
		259	string instead of the body data.
		260
		261	It has to return either true (in which case AnyEvent::HTTP will continue),
		262	or false, in which case AnyEvent::HTTP will cancel the download (and call
		263	the completion callback with an error code of C<598>).
		264
		265	The downside to cancelling the request is that it makes it impossible to
		266	re-use the connection.
		267
		268	This callback is useful when the data is too large to be held in memory
		269	(so the callback writes it to a file) or when only some information should
		270	be extracted, or when the body should be processed incrementally.
		271
		272	It is usually preferred over doing your own body handling via
		273	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		274	only used to create a connection, C<want_body_handle> is the better
		275	alternative, as it allows you to install your own event handler, reducing
		276	resource usage.
		277
		278	=item want_body_handle => $enable
		279
		280	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		281	changes considerably: after parsing the headers, and instead of
		282	downloading the body (if any), the completion callback will be
		283	called. Instead of the C<$body> argument containing the body data, the
		284	callback will receive the L<AnyEvent::Handle> object associated with the
		285	connection. In error cases, C<undef> will be passed. When there is no body
		286	(e.g. status C<304>), the empty string will be passed.
		287
		288	The handle object might or might not be in TLS mode, might be connected to
		289	a proxy, be a persistent connection etc., and configured in unspecified
		290	ways. The user is responsible for this handle (it will not be used by this
		291	module anymore).
		292
		293	This is useful with some push-type services, where, after the initial
		294	headers, an interactive protocol is used (typical example would be the
		295	push-style twitter API which starts a JSON/XML stream).
		296
		297	If you think you need this, first have a look at C<on_body>, to see if
		298	that doesn't solve your problem in a better way.
		299
190	=back	300	=back
191		301
192	Example: make a simple HTTP GET request for http://www.nethype.de/	302	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		303	the response body.
193		304
194	http_request GET => "http://www.nethype.de/", sub {	305	http_request GET => "http://www.nethype.de/", sub {
195	my ($body, $hdr) = @_;	306	my ($body, $hdr) = @_;
196	print "$body\n";	307	print "$body\n";
197	};	308	};
198		309
199	Example: make a HTTP HEAD request on https://www.google.com/, use a	310	Example: do a HTTP HEAD request on https://www.google.com/, use a
200	timeout of 30 seconds.	311	timeout of 30 seconds.
201		312
202	http_request	313	http_request
203	GET => "https://www.google.com",	314	GET => "https://www.google.com",
204	timeout => 30,	315	timeout => 30,
…		…
207	use Data::Dumper;	318	use Data::Dumper;
208	print Dumper $hdr;	319	print Dumper $hdr;
209	}	320	}
210	;	321	;
211		322
212	Example: make another simple HTTP GET request, but immediately try to	323	Example: do another simple HTTP GET request, but immediately try to
213	cancel it.	324	cancel it.
214		325
215	my $request = http_request GET => "http://www.nethype.de/", sub {	326	my $request = http_request GET => "http://www.nethype.de/", sub {
216	my ($body, $hdr) = @_;	327	my ($body, $hdr) = @_;
217	print "$body\n";	328	print "$body\n";
…		…
249	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	360	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
250		361
251	_slot_schedule $_[0];	362	_slot_schedule $_[0];
252	}	363	}
253		364
254	our $qr_nl = qr<\015?\012>;	365	# continue to parse $_ for headers and place them into the arg
255	our $qr_nlnl = qr<\015?\012\015?\012>;	366	sub parse_hdr() {
		367	my %hdr;
256		368
		369	# things seen, not parsed:
		370	# p3pP="NON CUR OTPi OUR NOR UNI"
		371
		372	$hdr{lc $1} .= ",$2"
		373	while /\G
		374	([^:\000-\037]*):
		375	[\011\040]*
		376	((?: [^\012]+ \| \012[\011\040] )*)
		377	\012
		378	/gxc;
		379
		380	/\G$/
		381	or return;
		382
		383	# remove the "," prefix we added to all headers above
		384	substr $_, 0, 1, ""
		385	for values %hdr;
		386
		387	\%hdr
		388	}
		389
		390	our $qr_nlnl = qr{(?<![^\012])\015?\012};
		391
257	our $TLS_CTX_LOW = { cache => 1, dh => undef, sslv2 => 1 };	392	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
258	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_cn => "https", dh => "skip4096" };	393	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
259		394
260	sub http_request($$@) {	395	sub http_request($$@) {
261	my $cb = pop;	396	my $cb = pop;
262	my ($method, $url, %arg) = @_;	397	my ($method, $url, %arg) = @_;
263		398
…		…
272	while (my ($k, $v) = each %$hdr) {	407	while (my ($k, $v) = each %$hdr) {
273	$hdr{lc $k} = $v;	408	$hdr{lc $k} = $v;
274	}	409	}
275	}	410	}
276		411
		412	# pseudo headers for all subsequent responses
		413	my @pseudo = (URL => $url);
		414	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		415
277	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	416	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
278		417
279	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	418	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
280	if $recurse < 0;	419	if $recurse < 0;
281		420
282	my $proxy = $arg{proxy} \|\| $PROXY;	421	my $proxy = $arg{proxy} \|\| $PROXY;
283	my $timeout = $arg{timeout} \|\| $TIMEOUT;	422	my $timeout = $arg{timeout} \|\| $TIMEOUT;
284		423
285	$hdr{"user-agent"} \|\|= $USERAGENT;
286
287	my ($uscheme, $uauthority, $upath, $query, $fragment) =	424	my ($uscheme, $uauthority, $upath, $query, $fragment) =
288	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	425	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
289		426
290	$uscheme = lc $uscheme;	427	$uscheme = lc $uscheme;
291		428
292	my $uport = $uscheme eq "http" ? 80	429	my $uport = $uscheme eq "http" ? 80
293	: $uscheme eq "https" ? 443	430	: $uscheme eq "https" ? 443
294	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported (not '$uscheme')", URL => $url });	431	: 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		432
298	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	433	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
299	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	434	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
300		435
301	my $uhost = $1;	436	my $uhost = $1;
302	$uport = $2 if defined $2;	437	$uport = $2 if defined $2;
303		438
		439	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		440	unless exists $hdr{host};
		441
304	$uhost =~ s/^\[(.*)\]$/$1/;	442	$uhost =~ s/^\[(.*)\]$/$1/;
305	$upath .= "?$query" if length $query;	443	$upath .= $query if length $query;
306		444
307	$upath =~ s%^/?%/%;	445	$upath =~ s%^/?%/%;
308		446
309	# cookie processing	447	# cookie processing
310	if (my $jar = $arg{cookie_jar}) {	448	if (my $jar = $arg{cookie_jar}) {
…		…
340	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	478	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
341		479
342	if ($proxy) {	480	if ($proxy) {
343	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	481	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
344		482
		483	$rscheme = "http" unless defined $rscheme;
		484
345	# don't support https requests over https-proxy transport,	485	# don't support https requests over https-proxy transport,
346	# can't be done with tls as spec'ed, unless you double-encrypt.	486	# can't be done with tls as spec'ed, unless you double-encrypt.
347	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	487	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
348	} else {	488	} else {
349	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	489	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
350	}	490	}
351		491
352	$hdr{host} = $uhost;	492	# leave out fragment and query string, just a heuristic
		493	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		494	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
		495
353	$hdr{"content-length"} = length $arg{body};	496	$hdr{"content-length"} = length $arg{body}
		497	if length $arg{body} \|\| $method ne "GET";
		498
		499	$hdr{connection} = "close TE"; #1.1
		500	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
354		501
355	my %state = (connect_guard => 1);	502	my %state = (connect_guard => 1);
356		503
357	_get_slot $uhost, sub {	504	_get_slot $uhost, sub {
358	$state{slot_guard} = shift;	505	$state{slot_guard} = shift;
359		506
360	return unless $state{connect_guard};	507	return unless $state{connect_guard};
361		508
362	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	509	my $connect_cb = sub {
363	$state{fh} = shift	510	$state{fh} = shift
364	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));	511	or do {
		512	my $err = "$!";
		513	%state = ();
		514	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		515	};
		516
365	pop; # free memory, save a tree	517	pop; # free memory, save a tree
366		518
367	return unless delete $state{connect_guard};	519	return unless delete $state{connect_guard};
368		520
369	# get handle	521	# get handle
370	$state{handle} = new AnyEvent::Handle	522	$state{handle} = new AnyEvent::Handle
371	fh => $state{fh},	523	fh => $state{fh},
		524	peername => $rhost,
		525	tls_ctx => $arg{tls_ctx},
		526	# these need to be reconfigured on keepalive handles
372	timeout => $timeout,	527	timeout => $timeout,
373	peername => $rhost,	528	on_error => sub {
374	tls_ctx => $arg{tls_ctx};	529	%state = ();
		530	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		531	},
		532	on_eof => sub {
		533	%state = ();
		534	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		535	},
		536	;
375		537
376	# limit the number of persistent connections	538	# limit the number of persistent connections
377	# keepalive not yet supported	539	# keepalive not yet supported
378	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	540	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
379	++$KA_COUNT{$_[1]};	541	# ++$KA_COUNT{$_[1]};
380	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	542	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
381	--$KA_COUNT{$_[1]}	543	# --$KA_COUNT{$_[1]}
382	};	544	# };
383	$hdr{connection} = "keep-alive";	545	# $hdr{connection} = "keep-alive";
384	} else {
385	delete $hdr{connection};
386	}	546	# }
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		547
398	$state{handle}->starttls ("connect") if $rscheme eq "https";	548	$state{handle}->starttls ("connect") if $rscheme eq "https";
399		549
400	# handle actual, non-tunneled, request	550	# handle actual, non-tunneled, request
401	my $handle_actual_request = sub {	551	my $handle_actual_request = sub {
402	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	552	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
403		553
404	# send request	554	# send request
405	$state{handle}->push_write (	555	$state{handle}->push_write (
406	"$method $rpath HTTP/1.0\015\012"	556	"$method $rpath HTTP/1.1\015\012"
407	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	557	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
408	. "\015\012"	558	. "\015\012"
409	. (delete $arg{body})	559	. (delete $arg{body})
410	);	560	);
411		561
		562	# return if error occured during push_write()
		563	return unless %state;
		564
412	%hdr = (); # reduce memory usage, save a kitten	565	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
413		566
414	# status line	567	# status line and headers
415	$state{handle}->push_read (line => $qr_nl, sub {	568	$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") {	569	for ("$_[1]") {
429	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	570	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
430		571
431	# things seen, not parsed:	572	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
432	# p3pP="NON CUR OTPi OUR NOR UNI"	573	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
433		574
434	$hdr{lc $1} .= ",$2"	575	# 100 Continue handling
435	while /\G	576	# should not happen as we don't send expect: 100-continue,
436	([^:\000-\037]+):	577	# but we handle it just in case.
437	[\011\040]*	578	# since we send the request body regardless, if we get an error
438	((?: [^\012]+ \| \012[\011\040] )*)	579	# we are out of-sync, which we currently do NOT handle correctly.
439	\012	580	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
440	/gxc;	581	if $2 eq 100;
441		582
		583	push @pseudo,
		584	HTTPVersion => $1,
		585	Status => $2,
		586	Reason => $3,
442	/\G$/	587	;
		588
		589	my $hdr = parse_hdr
443	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));	590	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		591
		592	%hdr = (%$hdr, @pseudo);
		593	}
		594
		595	# redirect handling
		596	# microsoft and other shitheads don't give a shit for following standards,
		597	# try to support some common forms of broken Location headers.
		598	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		599	$hdr{location} =~ s/^\.\/+//;
		600
		601	my $url = "$rscheme://$uhost:$uport";
		602
		603	unless ($hdr{location} =~ s/^\///) {
		604	$url .= $upath;
		605	$url =~ s/\/[^\/]*$//;
444	}	606	}
445		607
446	substr $_, 0, 1, ""	608	$hdr{location} = "$url/$hdr{location}";
447	for values %hdr;	609	}
448		610
449	my $finish = sub {	611	my $redirect;
		612
		613	if ($recurse) {
		614	my $status = $hdr{Status};
		615
		616	# industry standard is to redirect POST as GET for
		617	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		618	# also, the UA should ask the user for 301 and 307 and POST,
		619	# industry standard seems to be to simply follow.
		620	# we go with the industry standard.
		621	if ($status == 301 or $status == 302 or $status == 303) {
		622	# HTTP/1.1 is unclear on how to mutate the method
		623	$method = "GET" unless $method eq "HEAD";
		624	$redirect = 1;
		625	} elsif ($status == 307) {
		626	$redirect = 1;
		627	}
		628	}
		629
		630	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		631	my $keepalive = pop;
		632
450	$state{handle}->destroy;	633	$state{handle}->destroy if $state{handle};
451	%state = ();	634	%state = ();
452		635
		636	if (defined $_[1]) {
		637	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		638	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		639	}
		640
453	# set-cookie processing	641	# set-cookie processing
454	if ($arg{cookie_jar}) {	642	if ($arg{cookie_jar}) {
455	for ($hdr{"set-cookie"}) {	643	for ($hdr{"set-cookie"}) {
456	# parse NAME=VALUE	644	# parse NAME=VALUE
457	my @kv;	645	my @kv;
458		646
459	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {	647	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
460	my $name = $1;	648	my $name = $1;
461	my $value = $3;	649	my $value = $3;
462		650
463	unless ($value) {	651	unless ($value) {
464	$value = $2;	652	$value = $2;
465	$value =~ s/\\(.)/$1/gs;	653	$value =~ s/\\(.)/$1/gs;
		654	}
		655
		656	push @kv, $name => $value;
		657
		658	last unless /\G\s*;/gc;
		659	}
		660
		661	last unless @kv;
		662
		663	my $name = shift @kv;
		664	my %kv = (value => shift @kv, @kv);
		665
		666	my $cdom;
		667	my $cpath = (delete $kv{path}) \|\| "/";
		668
		669	if (exists $kv{domain}) {
		670	$cdom = delete $kv{domain};
		671
		672	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		673
		674	next if $cdom =~ /\.$/;
		675
		676	# this is not rfc-like and not netscape-like. go figure.
		677	my $ndots = $cdom =~ y/.//;
		678	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		679	} else {
		680	$cdom = $uhost;
		681	}
		682
		683	# store it
		684	$arg{cookie_jar}{version} = 1;
		685	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		686
		687	redo if /\G\s*,/gc;
		688	}
		689	}
		690
		691	if ($redirect && exists $hdr{location}) {
		692	# we ignore any errors, as it is very common to receive
		693	# Content-Length != 0 but no actual body
		694	# we also access %hdr, as $_[1] might be an erro
		695	http_request (
		696	$method => $hdr{location},
		697	%arg,
		698	recurse => $recurse - 1,
		699	Redirect => [$_[0], \%hdr],
		700	$cb);
		701	} else {
		702	$cb->($_[0], \%hdr);
		703	}
		704	};
		705
		706	my $len = $hdr{"content-length"};
		707
		708	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		709	$finish->(undef, 598 => "Request cancelled by on_header");
		710	} elsif (
		711	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		712	or $method eq "HEAD"
		713	or (defined $len && !$len)
		714	) {
		715	# no body
		716	$finish->("", undef, undef, 1);
		717	} else {
		718	# body handling, many different code paths
		719	# - no body expected
		720	# - want_body_handle
		721	# - te chunked
		722	# - 2x length known (with or without on_body)
		723	# - 2x length not known (with or without on_body)
		724	if (!$redirect && $arg{want_body_handle}) {
		725	$_[0]->on_eof (undef);
		726	$_[0]->on_error (undef);
		727	$_[0]->on_read (undef);
		728
		729	$finish->(delete $state{handle});
		730
		731	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		732	my $cl = 0;
		733	my $body = undef;
		734	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		735
		736	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		737
		738	my $read_chunk; $read_chunk = sub {
		739	$_[1] =~ /^([0-9a-fA-F]+)/
		740	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		741
		742	my $len = hex $1;
		743
		744	if ($len) {
		745	$cl += $len;
		746
		747	$_[0]->push_read (chunk => $len, sub {
		748	$on_body->($_[1], \%hdr)
		749	or return $finish->(undef, 598 => "Request cancelled by on_body");
		750
		751	$_[0]->push_read (line => sub {
		752	length $_[1]
		753	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		754	$_[0]->push_read (line => $read_chunk);
		755	});
		756	});
		757	} else {
		758	$hdr{"content-length"} \|\|= $cl;
		759
		760	$_[0]->push_read (line => $qr_nlnl, sub {
		761	if (length $_[1]) {
		762	for ("$_[1]") {
		763	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		764
		765	my $hdr = parse_hdr
		766	or return $finish->(undef, 599 => "Garbled response trailers");
		767
		768	%hdr = (%hdr, %$hdr);
		769	}
466	}	770	}
467		771
468	push @kv, $name => $value;	772	$finish->($body, undef, undef, 1);
469
470	last unless /\G\s*;/gc;
471	}	773	});
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	}	774	}
501	}	775	};
502		776
503	# microsoft and other shitheads don't give a shit for following standards,	777	$_[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		778
508	my $url = "$rscheme://$uhost:$uport";	779	} elsif ($arg{on_body}) {
		780	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
509		781
510	unless ($_[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, $cb);
528	} else {	782	if ($len) {
529	$cb->($_[0], $_[1]);	783	$_[0]->on_read (sub {
530	}	784	$len -= length $_[0]{rbuf};
531	};
532		785
533	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	786	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
534	$finish->(undef, \%hdr);	787	or return $finish->(undef, 598 => "Request cancelled by on_body");
535	} else {	788
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	};	789	$len > 0
542		790	or $finish->("", undef, undef, 1);
543	$finish->($_[1], \%hdr);
544	});	791	});
545	} else {	792	} else {
546	# too bad, need to read until we get an error or EOF,	793	$_[0]->on_eof (sub {
547	# no way to detect winged data.	794	$finish->("");
		795	});
		796	$_[0]->on_read (sub {
		797	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		798	or $finish->(undef, 598 => "Request cancelled by on_body");
		799	});
		800	}
		801	} else {
		802	$_[0]->on_eof (undef);
		803
		804	if ($len) {
		805	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		806	$_[0]->on_read (sub {
		807	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
		808	if $len <= length $_[0]{rbuf};
		809	});
		810	} else {
548	$_[0]->on_error (sub {	811	$_[0]->on_error (sub {
549	# delete ought to be more efficient, as we would have to make	812	($! == Errno::EPIPE \|\| !$!)
550	# a copy otherwise as $_[0] gets destroyed.
551	$finish->(delete $_[0]{rbuf}, \%hdr);	813	? $finish->(delete $_[0]{rbuf})
		814	: $finish->(undef, 599 => $_[2]);
552	});	815	});
553	$_[0]->on_eof (undef);
554	$_[0]->on_read (sub { });	816	$_[0]->on_read (sub { });
555	}	817	}
556	}	818	}
557	});	819	}
558	});	820	};
		821
		822	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
559	};	823	};
560		824
561	# now handle proxy-CONNECT method	825	# now handle proxy-CONNECT method
562	if ($proxy && $uscheme eq "https") {	826	if ($proxy && $uscheme eq "https") {
563	# oh dear, we have to wrap it into a connect request	827	# oh dear, we have to wrap it into a connect request
564		828
565	# maybe re-use $uauthority with patched port?	829	# 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");	830	$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 {	831	$state{handle}->push_read (line => $qr_nlnl, sub {
568	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	832	$_[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 }));	833	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
570		834
571	if ($2 == 200) {	835	if ($2 == 200) {
572	$rpath = $upath;	836	$rpath = $upath;
573	&$handle_actual_request;	837	&$handle_actual_request;
574	} else {	838	} else {
575	%state = ();	839	%state = ();
576	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	840	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
577	}	841	}
578	});	842	});
579	} else {	843	} else {
580	&$handle_actual_request;	844	&$handle_actual_request;
581	}	845	}
582
583	}, sub {
584	$timeout
585	};	846	};
		847
		848	my $tcp_connect = $arg{tcp_connect}
		849	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		850
		851	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		852
586	};	853	};
587		854
588	defined wantarray && AnyEvent::Util::guard { %state = () }	855	defined wantarray && AnyEvent::Util::guard { %state = () }
589	}	856	}
590		857
…		…
604	&http_request	871	&http_request
605	}	872	}
606		873
607	=back	874	=back
608		875
		876	=head2 DNS CACHING
		877
		878	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		879	the actual connection, which in turn uses AnyEvent::DNS to resolve
		880	hostnames. The latter is a simple stub resolver and does no caching
		881	on its own. If you want DNS caching, you currently have to provide
		882	your own default resolver (by storing a suitable resolver object in
		883	C<$AnyEvent::DNS::RESOLVER>).
		884
609	=head2 GLOBAL FUNCTIONS AND VARIABLES	885	=head2 GLOBAL FUNCTIONS AND VARIABLES
610		886
611	=over 4	887	=over 4
612		888
613	=item AnyEvent::HTTP::set_proxy "proxy-url"	889	=item AnyEvent::HTTP::set_proxy "proxy-url"
614		890
615	Sets the default proxy server to use. The proxy-url must begin with a	891	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:...>).	892	string of the form C<http://host:port> (optionally C<https:...>), croaks
		893	otherwise.
		894
		895	To clear an already-set proxy, use C<undef>.
		896
		897	=item $date = AnyEvent::HTTP::format_date $timestamp
		898
		899	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		900	Date (RFC 2616).
		901
		902	=item $timestamp = AnyEvent::HTTP::parse_date $date
		903
		904	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX
		905	timestamp, or C<undef> if the date cannot be parsed.
617		906
618	=item $AnyEvent::HTTP::MAX_RECURSE	907	=item $AnyEvent::HTTP::MAX_RECURSE
619		908
620	The default value for the C<recurse> request parameter (default: C<10>).	909	The default value for the C<recurse> request parameter (default: C<10>).
621		910
622	=item $AnyEvent::HTTP::USERAGENT	911	=item $AnyEvent::HTTP::USERAGENT
623		912
624	The default value for the C<User-Agent> header (the default is	913	The default value for the C<User-Agent> header (the default is
625	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	914	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
626		915
627	=item $AnyEvent::HTTP::MAX_PERSISTENT	916	=item $AnyEvent::HTTP::MAX_PER_HOST
628		917
629	The maximum number of persistent connections to keep open (default: 8).	918	The maximum number of concurrent connections to the same host (identified
		919	by the hostname). If the limit is exceeded, then the additional requests
		920	are queued until previous connections are closed.
630		921
631	Not implemented currently.	922	The default value for this is C<4>, and it is highly advisable to not
632		923	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		924
639	=item $AnyEvent::HTTP::ACTIVE	925	=item $AnyEvent::HTTP::ACTIVE
640		926
641	The number of active connections. This is not the number of currently	927	The number of active connections. This is not the number of currently
642	running requests, but the number of currently open and non-idle TCP	928	running requests, but the number of currently open and non-idle TCP
…		…
644		930
645	=back	931	=back
646		932
647	=cut	933	=cut
648		934
		935	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		936	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		937
		938	sub format_date($) {
		939	my ($time) = @_;
		940
		941	# RFC 822/1123 format
		942	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		943
		944	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		945	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		946	$H, $M, $S;
		947	}
		948
		949	sub parse_date($) {
		950	my ($date) = @_;
		951
		952	my ($d, $m, $y, $H, $M, $S);
		953
		954	if ($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$/) {
		955	# RFC 822/1123, required by RFC 2616
		956	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		957
		958	} elsif ($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$/) {
		959	# RFC 850
		960	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		961
		962	} elsif ($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])$/) {
		963	# ISO C's asctime
		964	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		965	}
		966	# other formats fail in the loop below
		967
		968	for (0..11) {
		969	if ($m eq $month[$_]) {
		970	require Time::Local;
		971	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		972	}
		973	}
		974
		975	undef
		976	}
		977
649	sub set_proxy($) {	978	sub set_proxy($) {
		979	if (length $_[0]) {
650	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	980	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		981	or Carp::croak "$_[0]: invalid proxy URL";
		982	$PROXY = [$2, $3 \|\| 3128, $1]
		983	} else {
		984	undef $PROXY;
		985	}
651	}	986	}
652		987
653	# initialise proxy from environment	988	# initialise proxy from environment
		989	eval {
654	set_proxy $ENV{http_proxy};	990	set_proxy $ENV{http_proxy};
		991	};
		992
		993	=head2 SOCKS PROXIES
		994
		995	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		996	compile your perl to support socks, or use an external program such as
		997	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		998	transparently.
		999
		1000	Alternatively, for AnyEvent::HTTP only, you can use your own
		1001	C<tcp_connect> function that does the proxy handshake - here is an example
		1002	that works with socks4a proxies:
		1003
		1004	use Errno;
		1005	use AnyEvent::Util;
		1006	use AnyEvent::Socket;
		1007	use AnyEvent::Handle;
		1008
		1009	# host, port and username of/for your socks4a proxy
		1010	my $socks_host = "10.0.0.23";
		1011	my $socks_port = 9050;
		1012	my $socks_user = "";
		1013
		1014	sub socks4a_connect {
		1015	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1016
		1017	my $hdl = new AnyEvent::Handle
		1018	connect => [$socks_host, $socks_port],
		1019	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1020	on_error => sub { $connect_cb->() },
		1021	;
		1022
		1023	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1024
		1025	$hdl->push_read (chunk => 8, sub {
		1026	my ($hdl, $chunk) = @_;
		1027	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1028
		1029	if ($status == 0x5a) {
		1030	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1031	} else {
		1032	$! = Errno::ENXIO; $connect_cb->();
		1033	}
		1034	});
		1035
		1036	$hdl
		1037	}
		1038
		1039	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1040	possibly after switching off other proxy types:
		1041
		1042	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1043
		1044	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1045	my ($data, $headers) = @_;
		1046	...
		1047	};
655		1048
656	=head1 SEE ALSO	1049	=head1 SEE ALSO
657		1050
658	L<AnyEvent>.	1051	L<AnyEvent>.
659		1052

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs. Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs.
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC