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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.18 by root, Fri Jun 6 16:23:57 2008 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 ();	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 = '1.01';	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 $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$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
…		…
71	my %CO_SLOT; # number of open connections, and wait queue, per host	70	my %CO_SLOT; # number of open connections, and wait queue, per host
72		71
73	=item http_get $url, key => value..., $cb->($data, $headers)	72	=item http_get $url, key => value..., $cb->($data, $headers)
74		73
75	Executes an HTTP-GET request. See the http_request function for details on	74	Executes an HTTP-GET request. See the http_request function for details on
76	additional parameters.	75	additional parameters and the return value.
77		76
78	=item http_head $url, key => value..., $cb->($data, $headers)	77	=item http_head $url, key => value..., $cb->($data, $headers)
79		78
80	Executes an HTTP-HEAD request. See the http_request function for details on	79	Executes an HTTP-HEAD request. See the http_request function for details
81	additional parameters.	80	on additional parameters and the return value.
82		81
83	=item http_post $url, $body, key => value..., $cb->($data, $headers)	82	=item http_post $url, $body, key => value..., $cb->($data, $headers)
84		83
85	Executes an HTTP-POST request with a request body of C<$bod>. See the	84	Executes an HTTP-POST request with a request body of C<$body>. See the
86	http_request function for details on additional parameters.	85	http_request function for details on additional parameters and the return
		86	value.
87		87
88	=item http_request $method => $url, key => value..., $cb->($data, $headers)	88	=item http_request $method => $url, key => value..., $cb->($data, $headers)
89		89
90	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	90	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
91	must be an absolute http or https URL.	91	must be an absolute http or https URL.
92		92
		93	When called in void context, nothing is returned. In other contexts,
		94	C<http_request> returns a "cancellation guard" - you have to keep the
		95	object at least alive until the callback get called. If the object gets
		96	destroyed before the callback is called, the request will be cancelled.
		97
93	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
94	(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
95	response headers as second argument.	100	(and trailers) as second argument.
96		101
97	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
98	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
99	C<Reason> contain the three parts of the HTTP Status-Line of the same	104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain 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
		110	The pseudo-header C<URL> contains the actual URL (which can differ from
		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	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
		122
100	name. If the server sends a header multiple lines, then their contents	123	If the server sends a header multiple times, then their contents will be
101	will be joined together with C<\x00>.	124	joined together with a comma (C<,>), as per the HTTP spec.
102		125
103	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
104	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
105	and the C<Reason> pseudo-header will contain an error message.	128	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		129	message.
106		130
107	A typical callback might look like this:	131	A typical callback might look like this:
108		132
109	sub {	133	sub {
110	my ($body, $hdr) = @_;	134	my ($body, $hdr) = @_;
…		…
126	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
127	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
128		152
129	=item headers => hashref	153	=item headers => hashref
130		154
131	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
132	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
133	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).
134		160
135	=item timeout => $seconds	161	=item timeout => $seconds
136		162
137	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
138	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
139		168
140	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
141		170
142	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
143	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
144		173
145	C<$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
146	HTTPS.	175	HTTPS.
147		176
148	=item body => $string	177	=item body => $string
149		178
150	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
151	this module might offer more options).	180	this module might offer more options).
152		181
153	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
154		183
155	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
156	based on the original netscape specification.	185	based on the original netscape specification.
157		186
158	The C<$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
159	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
160	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
161	recommended, as expire times are currently being ignored.	190	recommended, as expiry times are currently being ignored.
162		191
163	Note that this cookie implementation is not of very high quality, nor	192	Note that this cookie implementation is not of very high quality, nor
164	meant to be complete. If you want complete cookie management you have to	193	meant to be complete. If you want complete cookie management you have to
165	do that on your own. C<cookie_jar> is meant as a quick fix to get some	194	do that on your own. C<cookie_jar> is meant as a quick fix to get some
166	cookie-using sites working. Cookies are a privacy disaster, do not use	195	cookie-using sites working. Cookies are a privacy disaster, do not use
167	them unless required to.	196	them unless required to.
168		197
		198	=item tls_ctx => $scheme \| $tls_ctx
		199
		200	Specifies the AnyEvent::TLS context to be used for https connections. This
		201	parameter follows the same rules as the C<tls_ctx> parameter to
		202	L<AnyEvent::Handle>, but additionally, the two strings C<low> or
		203	C<high> can be specified, which give you a predefined low-security (no
		204	verification, highest compatibility) and high-security (CA and common-name
		205	verification) TLS context.
		206
		207	The default for this option is C<low>, which could be interpreted as "give
		208	me the page, no matter what".
		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
169	=back	300	=back
170		301
171	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.
172		304
173	http_request GET => "http://www.nethype.de/", sub {	305	http_request GET => "http://www.nethype.de/", sub {
174	my ($body, $hdr) = @_;	306	my ($body, $hdr) = @_;
175	print "$body\n";	307	print "$body\n";
176	};	308	};
177		309
178	Example: make a HTTP HEAD request on https://www.google.com/, use a	310	Example: do a HTTP HEAD request on https://www.google.com/, use a
179	timeout of 30 seconds.	311	timeout of 30 seconds.
180		312
181	http_request	313	http_request
182	GET => "https://www.google.com",	314	GET => "https://www.google.com",
183	timeout => 30,	315	timeout => 30,
…		…
185	my ($body, $hdr) = @_;	317	my ($body, $hdr) = @_;
186	use Data::Dumper;	318	use Data::Dumper;
187	print Dumper $hdr;	319	print Dumper $hdr;
188	}	320	}
189	;	321	;
		322
		323	Example: do another simple HTTP GET request, but immediately try to
		324	cancel it.
		325
		326	my $request = http_request GET => "http://www.nethype.de/", sub {
		327	my ($body, $hdr) = @_;
		328	print "$body\n";
		329	};
		330
		331	undef $request;
190		332
191	=cut	333	=cut
192		334
193	sub _slot_schedule;	335	sub _slot_schedule;
194	sub _slot_schedule($) {	336	sub _slot_schedule($) {
…		…
218	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	360	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
219		361
220	_slot_schedule $_[0];	362	_slot_schedule $_[0];
221	}	363	}
222		364
		365	# continue to parse $_ for headers and place them into the arg
		366	sub parse_hdr() {
		367	my %hdr;
		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
		392	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
		393	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
		394
223	sub http_request($$@) {	395	sub http_request($$@) {
224	my $cb = pop;	396	my $cb = pop;
225	my ($method, $url, %arg) = @_;	397	my ($method, $url, %arg) = @_;
226		398
227	my %hdr;	399	my %hdr;
		400
		401	$arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" \|\| !exists $arg{tls_ctx};
		402	$arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
228		403
229	$method = uc $method;	404	$method = uc $method;
230		405
231	if (my $hdr = $arg{headers}) {	406	if (my $hdr = $arg{headers}) {
232	while (my ($k, $v) = each %$hdr) {	407	while (my ($k, $v) = each %$hdr) {
233	$hdr{lc $k} = $v;	408	$hdr{lc $k} = $v;
234	}	409	}
235	}	410	}
236		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
237	my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;	416	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
238		417
239	return $cb->(undef, { Status => 599, Reason => "recursion limit reached" })	418	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
240	if $recurse < 0;	419	if $recurse < 0;
241		420
242	my $proxy = $arg{proxy} \|\| $PROXY;	421	my $proxy = $arg{proxy} \|\| $PROXY;
243	my $timeout = $arg{timeout} \|\| $TIMEOUT;	422	my $timeout = $arg{timeout} \|\| $TIMEOUT;
244		423
245	$hdr{"user-agent"} \|\|= $USERAGENT;
246
247	my ($scheme, $authority, $upath, $query, $fragment) =	424	my ($uscheme, $uauthority, $upath, $query, $fragment) =
248	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	425	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
249		426
250	$scheme = lc $scheme;	427	$uscheme = lc $uscheme;
251		428
252	my $uport = $scheme eq "http" ? 80	429	my $uport = $uscheme eq "http" ? 80
253	: $scheme eq "https" ? 443	430	: $uscheme eq "https" ? 443
254	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" });	431	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
255		432
256	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
257
258	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	433	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
259	or return $cb->(undef, { Status => 599, Reason => "unparsable URL" });	434	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
260		435
261	my $uhost = $1;	436	my $uhost = $1;
262	$uport = $2 if defined $2;	437	$uport = $2 if defined $2;
263		438
		439	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		440	unless exists $hdr{host};
		441
264	$uhost =~ s/^\[(.*)\]$/$1/;	442	$uhost =~ s/^\[(.*)\]$/$1/;
265	$upath .= "?$query" if length $query;	443	$upath .= $query if length $query;
266		444
267	$upath =~ s%^/?%/%;	445	$upath =~ s%^/?%/%;
268		446
269	# cookie processing	447	# cookie processing
270	if (my $jar = $arg{cookie_jar}) {	448	if (my $jar = $arg{cookie_jar}) {
271	%$jar = () if $jar->{version} < 1;	449	%$jar = () if $jar->{version} != 1;
272		450
273	my @cookie;	451	my @cookie;
274		452
275	while (my ($chost, $v) = each %$jar) {	453	while (my ($chost, $v) = each %$jar) {
		454	if ($chost =~ /^\./) {
276	next unless $chost eq substr $uhost, -length $chost;	455	next unless $chost eq substr $uhost, -length $chost;
277	next unless $chost =~ /^\./;	456	} elsif ($chost =~ /\./) {
		457	next unless $chost eq $uhost;
		458	} else {
		459	next;
		460	}
278		461
279	while (my ($cpath, $v) = each %$v) {	462	while (my ($cpath, $v) = each %$v) {
280	next unless $cpath eq substr $upath, 0, length $cpath;	463	next unless $cpath eq substr $upath, 0, length $cpath;
281		464
282	while (my ($k, $v) = each %$v) {	465	while (my ($k, $v) = each %$v) {
283	next if $scheme ne "https" && exists $v->{secure};	466	next if $uscheme ne "https" && exists $v->{secure};
		467	my $value = $v->{value};
		468	$value =~ s/([\\"])/\\$1/g;
284	push @cookie, "$k=$v->{value}";	469	push @cookie, "$k=\"$value\"";
285	}	470	}
286	}	471	}
287	}	472	}
288		473
289	$hdr{cookie} = join "; ", @cookie	474	$hdr{cookie} = join "; ", @cookie
290	if @cookie;	475	if @cookie;
291	}	476	}
292		477
293	my ($rhost, $rport, $rpath); # request host, port, path	478	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
294		479
295	if ($proxy) {	480	if ($proxy) {
296	($rhost, $rport, $scheme) = @$proxy;	481	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
297	$rpath = $url;	482
		483	$rscheme = "http" unless defined $rscheme;
		484
		485	# don't support https requests over https-proxy transport,
		486	# can't be done with tls as spec'ed, unless you double-encrypt.
		487	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
298	} else {	488	} else {
299	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	489	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
300	$hdr{host} = $uhost;
301	}	490	}
302		491
		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
303	$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
304		501
305	my %state = (connect_guard => 1);	502	my %state = (connect_guard => 1);
306		503
307	_get_slot $uhost, sub {	504	_get_slot $uhost, sub {
308	$state{slot_guard} = shift;	505	$state{slot_guard} = shift;
309		506
310	return unless $state{connect_guard};	507	return unless $state{connect_guard};
311		508
312	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	509	my $connect_cb = sub {
313	$state{fh} = shift	510	$state{fh} = shift
		511	or do {
		512	my $err = "$!";
		513	%state = ();
314	or return $cb->(undef, { Status => 599, Reason => "$!" });	514	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		515	};
315		516
316	delete $state{connect_guard}; # reduce memory usage, save a tree	517	pop; # free memory, save a tree
		518
		519	return unless delete $state{connect_guard};
317		520
318	# get handle	521	# get handle
319	$state{handle} = new AnyEvent::Handle	522	$state{handle} = new AnyEvent::Handle
320	fh => $state{fh},	523	fh => $state{fh},
321	($scheme eq "https" ? (tls => "connect") : ());	524	peername => $rhost,
		525	tls_ctx => $arg{tls_ctx},
		526	# these need to be reconfigured on keepalive handles
		527	timeout => $timeout,
		528	on_error => sub {
		529	%state = ();
		530	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		531	},
		532	on_eof => sub {
		533	%state = ();
		534	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		535	},
		536	;
322		537
323	# limit the number of persistent connections	538	# limit the number of persistent connections
		539	# keepalive not yet supported
324	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	540	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
325	++$KA_COUNT{$_[1]};	541	# ++$KA_COUNT{$_[1]};
326	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	542	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		543	# --$KA_COUNT{$_[1]}
		544	# };
327	$hdr{connection} = "keep-alive";	545	# $hdr{connection} = "keep-alive";
328	delete $hdr{connection}; # keep-alive not yet supported
329	} else {
330	delete $hdr{connection};
331	}	546	# }
332		547
333	# (re-)configure handle	548	$state{handle}->starttls ("connect") if $rscheme eq "https";
334	$state{handle}->timeout ($timeout);
335	$state{handle}->on_error (sub {
336	my $errno = "$!";
337	%state = ();
338	$cb->(undef, { Status => 599, Reason => $errno });
339	});
340	$state{handle}->on_eof (sub {
341	%state = ();
342	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });
343	});
344		549
		550	# handle actual, non-tunneled, request
		551	my $handle_actual_request = sub {
		552	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		553
345	# send request	554	# send request
346	$state{handle}->push_write (	555	$state{handle}->push_write (
347	"$method $rpath HTTP/1.0\015\012"	556	"$method $rpath HTTP/1.1\015\012"
348	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	557	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
349	. "\015\012"	558	. "\015\012"
350	. (delete $arg{body})	559	. (delete $arg{body})
351	);
352
353	%hdr = (); # reduce memory usage, save a kitten
354
355	# status line
356	$state{handle}->push_read (line => qr/\015?\012/, sub {
357	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
358	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
359
360	my %hdr = ( # response headers
361	HTTPVersion => "\x00$1",
362	Status => "\x00$2",
363	Reason => "\x00$3",
364	);	560	);
365		561
366	# headers, could be optimized a bit	562	# return if error occured during push_write()
367	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	563	return unless %state;
		564
		565	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
		566
		567	# status line and headers
		568	$state{read_response} = sub {
368	for ("$_[1]\012") {	569	for ("$_[1]") {
369	# we support spaces in field names, as lotus domino	570	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
370	# creates them.
371	$hdr{lc $1} .= "\x00$2"
372	while /\G
373	([^:\000-\037]+):
374	[\011\040]*
375	((?: [^\015\012]+ \| \015?\012[\011\040] )*)
376	\015?\012
377	/gxc;
378		571
		572	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
		573	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
		574
		575	# 100 Continue handling
		576	# should not happen as we don't send expect: 100-continue,
		577	# but we handle it just in case.
		578	# since we send the request body regardless, if we get an error
		579	# we are out of-sync, which we currently do NOT handle correctly.
		580	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		581	if $2 eq 100;
		582
		583	push @pseudo,
		584	HTTPVersion => $1,
		585	Status => $2,
		586	Reason => $3,
379	/\G$/	587	;
		588
		589	my $hdr = parse_hdr
380	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" }));	590	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		591
		592	%hdr = (%$hdr, @pseudo);
381	}	593	}
382		594
383	substr $_, 0, 1, ""	595	# redirect handling
384	for values %hdr;	596	# microsoft and other shitheads don't give a shit for following standards,
		597	# try to support some common forms of broken Location headers.
		598	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		599	$hdr{location} =~ s/^\.\/+//;
385		600
386	my $finish = sub {	601	my $url = "$rscheme://$uhost:$uport";
		602
		603	unless ($hdr{location} =~ s/^\///) {
		604	$url .= $upath;
		605	$url =~ s/\/[^\/]*$//;
		606	}
		607
		608	$hdr{location} = "$url/$hdr{location}";
		609	}
		610
		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
		633	$state{handle}->destroy if $state{handle};
387	%state = ();	634	%state = ();
388		635
		636	if (defined $_[1]) {
		637	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		638	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		639	}
		640
389	# set-cookie processing	641	# set-cookie processing
390	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {	642	if ($arg{cookie_jar}) {
391	for (split /\x00/, $hdr{"set-cookie"}) {	643	for ($hdr{"set-cookie"}) {
392	my ($cookie, @arg) = split /;\s*/;	644	# parse NAME=VALUE
393	my ($name, $value) = split /=/, $cookie, 2;	645	my @kv;
394	my %kv = (value => $value, map { split /=/, $_, 2 } @arg);	646
		647	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		648	my $name = $1;
		649	my $value = $3;
		650
		651	unless ($value) {
		652	$value = $2;
		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};
395		671
396	my $cdom = (delete $kv{domain}) \|\| $uhost;
397	my $cpath = (delete $kv{path}) \|\| "/";
398
399	$cdom =~ s/^.?/./; # make sure it starts with a "."	672	$cdom =~ s/^\.?/./; # make sure it starts with a "."
400		673
401	next if $cdom =~ /\.$/;	674	next if $cdom =~ /\.$/;
402		675
403	# this is not rfc-like and not netscape-like. go figure.	676	# this is not rfc-like and not netscape-like. go figure.
404	my $ndots = $cdom =~ y/.//;	677	my $ndots = $cdom =~ y/.//;
405	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	678	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		679	} else {
		680	$cdom = $uhost;
		681	}
406		682
407	# store it	683	# store it
408	$arg{cookie_jar}{version} = 1;	684	$arg{cookie_jar}{version} = 1;
409	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	685	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		686
		687	redo if /\G\s*,/gc;
410	}	688	}
411	}	689	}
412		690
413	if ($_[1]{Status} =~ /^30[12]$/ && $recurse) {	691	if ($redirect && exists $hdr{location}) {
414	# microsoft and other assholes don't give a shit for following standards,	692	# we ignore any errors, as it is very common to receive
415	# try to support a common form of broken Location header.	693	# Content-Length != 0 but no actual body
416	$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;	694	# we also access %hdr, as $_[1] might be an erro
417		695	http_request (
418	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	696	$method => $hdr{location},
		697	%arg,
		698	recurse => $recurse - 1,
		699	Redirect => [$_[0], \%hdr],
		700	$cb);
419	} else {	701	} else {
420	$cb->($_[0], $_[1]);	702	$cb->($_[0], \%hdr);
421	}	703	}
422	};	704	};
423		705
424	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	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
425	$finish->(undef, \%hdr);	716	$finish->("", undef, undef, 1);
426	} else {	717	} else {
427	if (exists $hdr{"content-length"}) {	718	# body handling, many different code paths
		719	# - no body expected
		720	# - want_body_handle
		721	# - te chunked
		722	# - 2x length known (with or without on_body)
		723	# - 2x length not known (with or without on_body)
		724	if (!$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
428	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	747	$_[0]->push_read (chunk => $len, sub {
429	# could cache persistent connection now	748	$on_body->($_[1], \%hdr)
430	if ($hdr{connection} =~ /\bkeep-alive\b/i) {	749	or return $finish->(undef, 598 => "Request cancelled by on_body");
431	# but we don't, due to misdesigns, this is annoyingly complex	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	}
		770	}
		771
		772	$finish->($body, undef, undef, 1);
		773	});
		774	}
		775	};
		776
		777	$_[0]->push_read (line => $read_chunk);
		778
		779	} elsif ($arg{on_body}) {
		780	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		781
		782	if ($len) {
		783	$_[0]->on_read (sub {
		784	$len -= length $_[0]{rbuf};
		785
		786	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		787	or return $finish->(undef, 598 => "Request cancelled by on_body");
		788
		789	$len > 0
		790	or $finish->("", undef, undef, 1);
432	};	791	});
433		792	} else {
		793	$_[0]->on_eof (sub {
434	$finish->($_[1], \%hdr);	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	});
435	});	800	}
436	} else {	801	} else {
437	# too bad, need to read until we get an error or EOF,
438	# no way to detect winged data.
439	$_[0]->on_error (sub {
440	$finish->($_[0]{rbuf}, \%hdr);
441	});
442	$_[0]->on_eof (undef);	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 {
		811	$_[0]->on_error (sub {
		812	($! == Errno::EPIPE \|\| !$!)
		813	? $finish->(delete $_[0]{rbuf})
		814	: $finish->(undef, 599 => $_[2]);
		815	});
443	$_[0]->on_read (sub { });	816	$_[0]->on_read (sub { });
		817	}
444	}	818	}
445	}	819	}
		820	};
		821
		822	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		823	};
		824
		825	# now handle proxy-CONNECT method
		826	if ($proxy && $uscheme eq "https") {
		827	# oh dear, we have to wrap it into a connect request
		828
		829	# maybe re-use $uauthority with patched port?
		830	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		831	$state{handle}->push_read (line => $qr_nlnl, sub {
		832	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		833	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
		834
		835	if ($2 == 200) {
		836	$rpath = $upath;
		837	&$handle_actual_request;
		838	} else {
		839	%state = ();
		840	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
		841	}
446	});	842	});
		843	} else {
		844	&$handle_actual_request;
447	});	845	}
448	}, sub {
449	$timeout
450	};	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
451	};	853	};
452		854
453	defined wantarray && AnyEvent::Util::guard { %state = () }	855	defined wantarray && AnyEvent::Util::guard { %state = () }
454	}	856	}
455		857
…		…
462	unshift @_, "HEAD";	864	unshift @_, "HEAD";
463	&http_request	865	&http_request
464	}	866	}
465		867
466	sub http_post($$@) {	868	sub http_post($$@) {
		869	my $url = shift;
467	unshift @_, "POST", "body";	870	unshift @_, "POST", $url, "body";
468	&http_request	871	&http_request
469	}	872	}
470		873
471	=back	874	=back
472		875
		876	=head2 DNS CACHING
		877
		878	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		879	the actual connection, which in turn uses AnyEvent::DNS to resolve
		880	hostnames. The latter is a simple stub resolver and does no caching
		881	on its own. If you want DNS caching, you currently have to provide
		882	your own default resolver (by storing a suitable resolver object in
		883	C<$AnyEvent::DNS::RESOLVER>).
		884
473	=head2 GLOBAL FUNCTIONS AND VARIABLES	885	=head2 GLOBAL FUNCTIONS AND VARIABLES
474		886
475	=over 4	887	=over 4
476		888
477	=item AnyEvent::HTTP::set_proxy "proxy-url"	889	=item AnyEvent::HTTP::set_proxy "proxy-url"
478		890
479	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
480	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.
481		906
482	=item $AnyEvent::HTTP::MAX_RECURSE	907	=item $AnyEvent::HTTP::MAX_RECURSE
483		908
484	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>).
485		910
486	=item $AnyEvent::HTTP::USERAGENT	911	=item $AnyEvent::HTTP::USERAGENT
487		912
488	The default value for the C<User-Agent> header (the default is	913	The default value for the C<User-Agent> header (the default is
489	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	914	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
490		915
491	=item $AnyEvent::HTTP::MAX_PERSISTENT	916	=item $AnyEvent::HTTP::MAX_PER_HOST
492		917
493	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.
494		921
495	Not implemented currently.	922	The default value for this is C<4>, and it is highly advisable to not
496		923	increase it.
497	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
498
499	The maximum time to cache a persistent connection, in seconds (default: 2).
500
501	Not implemented currently.
502		924
503	=item $AnyEvent::HTTP::ACTIVE	925	=item $AnyEvent::HTTP::ACTIVE
504		926
505	The number of active connections. This is not the number of currently	927	The number of active connections. This is not the number of currently
506	running requests, but the number of currently open and non-idle TCP	928	running requests, but the number of currently open and non-idle TCP
…		…
508		930
509	=back	931	=back
510		932
511	=cut	933	=cut
512		934
		935	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		936	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		937
		938	sub format_date($) {
		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, $_, $y);
		972	}
		973	}
		974
		975	undef
		976	}
		977
513	sub set_proxy($) {	978	sub set_proxy($) {
		979	if (length $_[0]) {
514	$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	}
515	}	986	}
516		987
517	# initialise proxy from environment	988	# initialise proxy from environment
		989	eval {
518	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	};
519		1048
520	=head1 SEE ALSO	1049	=head1 SEE ALSO
521		1050
522	L<AnyEvent>.	1051	L<AnyEvent>.
523		1052
524	=head1 AUTHOR	1053	=head1 AUTHOR
525		1054
526	Marc Lehmann <schmorp@schmorp.de>	1055	Marc Lehmann <schmorp@schmorp.de>
527	http://home.schmorp.de/	1056	http://home.schmorp.de/
528		1057
		1058	With many thanks to Дмитрий Шалашов, who provided countless
		1059	testcases and bugreports.
		1060
529	=cut	1061	=cut
530		1062
531	1	1063	1
532		1064

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.18 by root, Fri Jun 6 16:23:57 2008 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 1.18 by root, Fri Jun 6 16:23:57 2008 UTC vs.
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC