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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.29 by root, Wed Oct 22 23:28:11 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 = '1.05';	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
…		…
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).
108		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	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
		122
109	If the server sends a header multiple lines, then their contents will be	123	If the server sends a header multiple times, then their contents will be
110	joined together with C<\x00>.	124	joined together with a comma (C<,>), as per the HTTP spec.
111		125
112	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
113	then C<$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 => $hash_ref
163		183
164	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
165	based on the original netscape specification.	185	based on the original netscape specification.
166		186
167	The C<$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 expire times are currently being ignored.	190	recommended, as expiry times are currently being ignored.
171		191
172	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
173	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
174	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
175	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
176	them unless required to.	196	them unless required to.
177		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
178	=back	300	=back
179		301
180	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.
181		304
182	http_request GET => "http://www.nethype.de/", sub {	305	http_request GET => "http://www.nethype.de/", sub {
183	my ($body, $hdr) = @_;	306	my ($body, $hdr) = @_;
184	print "$body\n";	307	print "$body\n";
185	};	308	};
186		309
187	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
188	timeout of 30 seconds.	311	timeout of 30 seconds.
189		312
190	http_request	313	http_request
191	GET => "https://www.google.com",	314	GET => "https://www.google.com",
192	timeout => 30,	315	timeout => 30,
…		…
195	use Data::Dumper;	318	use Data::Dumper;
196	print Dumper $hdr;	319	print Dumper $hdr;
197	}	320	}
198	;	321	;
199		322
200	Example: make another simple HTTP GET request, but immediately try to	323	Example: do another simple HTTP GET request, but immediately try to
201	cancel it.	324	cancel it.
202		325
203	my $request = http_request GET => "http://www.nethype.de/", sub {	326	my $request = http_request GET => "http://www.nethype.de/", sub {
204	my ($body, $hdr) = @_;	327	my ($body, $hdr) = @_;
205	print "$body\n";	328	print "$body\n";
…		…
237	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	360	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238		361
239	_slot_schedule $_[0];	362	_slot_schedule $_[0];
240	}	363	}
241		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
242	sub http_request($$@) {	395	sub http_request($$@) {
243	my $cb = pop;	396	my $cb = pop;
244	my ($method, $url, %arg) = @_;	397	my ($method, $url, %arg) = @_;
245		398
246	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";
247		403
248	$method = uc $method;	404	$method = uc $method;
249		405
250	if (my $hdr = $arg{headers}) {	406	if (my $hdr = $arg{headers}) {
251	while (my ($k, $v) = each %$hdr) {	407	while (my ($k, $v) = each %$hdr) {
252	$hdr{lc $k} = $v;	408	$hdr{lc $k} = $v;
253	}	409	}
254	}	410	}
255		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
256	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	416	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
257		417
258	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })	418	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
259	if $recurse < 0;	419	if $recurse < 0;
260		420
261	my $proxy = $arg{proxy} \|\| $PROXY;	421	my $proxy = $arg{proxy} \|\| $PROXY;
262	my $timeout = $arg{timeout} \|\| $TIMEOUT;	422	my $timeout = $arg{timeout} \|\| $TIMEOUT;
263		423
264	$hdr{"user-agent"} \|\|= $USERAGENT;
265
266	my ($scheme, $authority, $upath, $query, $fragment) =	424	my ($uscheme, $uauthority, $upath, $query, $fragment) =
267	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	425	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
268		426
269	$scheme = lc $scheme;	427	$uscheme = lc $uscheme;
270		428
271	my $uport = $scheme eq "http" ? 80	429	my $uport = $uscheme eq "http" ? 80
272	: $scheme eq "https" ? 443	430	: $uscheme eq "https" ? 443
273	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });	431	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
274		432
275	$hdr{referer} \|\|= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
276
277	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	433	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
278	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });	434	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
279		435
280	my $uhost = $1;	436	my $uhost = $1;
281	$uport = $2 if defined $2;	437	$uport = $2 if defined $2;
282		438
		439	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		440	unless exists $hdr{host};
		441
283	$uhost =~ s/^\[(.*)\]$/$1/;	442	$uhost =~ s/^\[(.*)\]$/$1/;
284	$upath .= "?$query" if length $query;	443	$upath .= $query if length $query;
285		444
286	$upath =~ s%^/?%/%;	445	$upath =~ s%^/?%/%;
287		446
288	# cookie processing	447	# cookie processing
289	if (my $jar = $arg{cookie_jar}) {	448	if (my $jar = $arg{cookie_jar}) {
290	%$jar = () if $jar->{version} < 1;	449	%$jar = () if $jar->{version} != 1;
291		450
292	my @cookie;	451	my @cookie;
293		452
294	while (my ($chost, $v) = each %$jar) {	453	while (my ($chost, $v) = each %$jar) {
		454	if ($chost =~ /^\./) {
295	next unless $chost eq substr $uhost, -length $chost;	455	next unless $chost eq substr $uhost, -length $chost;
296	next unless $chost =~ /^\./;	456	} elsif ($chost =~ /\./) {
		457	next unless $chost eq $uhost;
		458	} else {
		459	next;
		460	}
297		461
298	while (my ($cpath, $v) = each %$v) {	462	while (my ($cpath, $v) = each %$v) {
299	next unless $cpath eq substr $upath, 0, length $cpath;	463	next unless $cpath eq substr $upath, 0, length $cpath;
300		464
301	while (my ($k, $v) = each %$v) {	465	while (my ($k, $v) = each %$v) {
302	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;
303	push @cookie, "$k=$v->{value}";	469	push @cookie, "$k=\"$value\"";
304	}	470	}
305	}	471	}
306	}	472	}
307		473
308	$hdr{cookie} = join "; ", @cookie	474	$hdr{cookie} = join "; ", @cookie
309	if @cookie;	475	if @cookie;
310	}	476	}
311		477
312	my ($rhost, $rport, $rpath); # request host, port, path	478	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
313		479
314	if ($proxy) {	480	if ($proxy) {
315	($rhost, $rport, $scheme) = @$proxy;	481	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
316	$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" && $rscheme eq "https";
317	} else {	488	} else {
318	($rhost, $rport, $rpath) = ($uhost, $uport, $upath);	489	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
319	$hdr{host} = $uhost;
320	}	490	}
321		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
322	$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
323		501
324	my %state = (connect_guard => 1);	502	my %state = (connect_guard => 1);
325		503
326	_get_slot $uhost, sub {	504	_get_slot $uhost, sub {
327	$state{slot_guard} = shift;	505	$state{slot_guard} = shift;
328		506
329	return unless $state{connect_guard};	507	return unless $state{connect_guard};
330		508
331	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	509	my $connect_cb = sub {
332	$state{fh} = shift	510	$state{fh} = shift
		511	or do {
		512	my $err = "$!";
		513	%state = ();
333	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });	514	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
		515	};
334		516
335	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};
336		520
337	# get handle	521	# get handle
338	$state{handle} = new AnyEvent::Handle	522	$state{handle} = new AnyEvent::Handle
339	fh => $state{fh},	523	fh => $state{fh},
340	($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	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		535	},
		536	;
341		537
342	# limit the number of persistent connections	538	# limit the number of persistent connections
		539	# keepalive not yet supported
343	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	540	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
344	++$KA_COUNT{$_[1]};	541	# ++$KA_COUNT{$_[1]};
345	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	542	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		543	# --$KA_COUNT{$_[1]}
		544	# };
346	$hdr{connection} = "keep-alive";	545	# $hdr{connection} = "keep-alive";
347	delete $hdr{connection}; # keep-alive not yet supported
348	} else {
349	delete $hdr{connection};
350	}	546	# }
351		547
352	# (re-)configure handle	548	$state{handle}->starttls ("connect") if $rscheme eq "https";
353	$state{handle}->timeout ($timeout);
354	$state{handle}->on_error (sub {
355	my $errno = "$!";
356	%state = ();
357	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });
358	});
359	$state{handle}->on_eof (sub {
360	%state = ();
361	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
362	});
363		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
364	# send request	554	# send request
365	$state{handle}->push_write (	555	$state{handle}->push_write (
366	"$method $rpath HTTP/1.0\015\012"	556	"$method $rpath HTTP/1.1\015\012"
367	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)	557	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
368	. "\015\012"	558	. "\015\012"
369	. (delete $arg{body})	559	. (delete $arg{body})
370	);
371
372	%hdr = (); # reduce memory usage, save a kitten
373
374	# status line
375	$state{handle}->push_read (line => qr/\015?\012/, sub {
376	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
377	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
378
379	my %hdr = ( # response headers
380	HTTPVersion => "\x00$1",
381	Status => "\x00$2",
382	Reason => "\x00$3",
383	URL => "\x00$url"
384	);	560	);
385		561
386	# headers, could be optimized a bit	562	# return if error occured during push_write()
387	$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	$state{read_response} = sub {
388	for ("$_[1]\012") {	569	for ("$_[1]") {
389	# 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.
390	# creates them.
391	$hdr{lc $1} .= "\x00$2"
392	while /\G
393	([^:\000-\037]+):
394	[\011\040]*
395	((?: [^\015\012]+ \| \015?\012[\011\040] )*)
396	\015?\012
397	/gxc;
398		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 => $3,
399	/\G$/	587	;
		588
		589	my $hdr = parse_hdr
400	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);
401	}	593	}
402		594
403	substr $_, 0, 1, ""	595	# redirect handling
404	for values %hdr;	596	# microsoft and other shitheads don't give a shit for following standards,
		597	# try to support some common forms of broken Location headers.
		598	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		599	$hdr{location} =~ s/^\.\/+//;
405		600
406	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};
407	%state = ();	634	%state = ();
408		635
		636	if (defined $_[1]) {
		637	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		638	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		639	}
		640
409	# set-cookie processing	641	# set-cookie processing
410	if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {	642	if ($arg{cookie_jar}) {
411	for (split /\x00/, $hdr{"set-cookie"}) {	643	for ($hdr{"set-cookie"}) {
412	my ($cookie, @arg) = split /;\s*/;	644	# parse NAME=VALUE
413	my ($name, $value) = split /=/, $cookie, 2;	645	my @kv;
414	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};
415		671
416	my $cdom = (delete $kv{domain}) \|\| $uhost;
417	my $cpath = (delete $kv{path}) \|\| "/";
418
419	$cdom =~ s/^\.?/./; # make sure it starts with a "."	672	$cdom =~ s/^\.?/./; # make sure it starts with a "."
420		673
421	next if $cdom =~ /\.$/;	674	next if $cdom =~ /\.$/;
422		675
423	# this is not rfc-like and not netscape-like. go figure.	676	# this is not rfc-like and not netscape-like. go figure.
424	my $ndots = $cdom =~ y/.//;	677	my $ndots = $cdom =~ y/.//;
425	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);	678	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		679	} else {
		680	$cdom = $uhost;
		681	}
426		682
427	# store it	683	# store it
428	$arg{cookie_jar}{version} = 1;	684	$arg{cookie_jar}{version} = 1;
429	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;	685	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		686
		687	redo if /\G\s*,/gc;
430	}	688	}
431	}	689	}
432		690
433	# microsoft and other shitheads don't give a shit for following standards,	691	if ($redirect && exists $hdr{location}) {
434	# try to support some common forms of broken Location headers.	692	# we ignore any errors, as it is very common to receive
435	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	693	# Content-Length != 0 but no actual body
436	$_[1]{location} =~ s/^\.\/+//;	694	# we also access %hdr, as $_[1] might be an erro
437		695	http_request (
438	my $url = "$scheme://$uhost:$uport";	696	$method => $hdr{location},
439
440	unless ($_[1]{location} =~ s/^\///) {
441	$url .= $upath;
442	$url =~ s/\/[^\/]*$//;
443	}	697	%arg,
444		698	recurse => $recurse - 1,
445	$_[1]{location} = "$url/$_[1]{location}";	699	Redirect => [$_[0], \%hdr],
446	}	700	$cb);
447
448	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
449	# apparently, mozilla et al. just change POST to GET here
450	# more research is needed before we do the same
451	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
452	} elsif ($_[1]{Status} == 303 && $recurse) {
453	# even http/1.1 is unlear on how to mutate the method
454	$method = "GET" unless $method eq "HEAD";
455	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
456	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
457	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
458	} else {	701	} else {
459	$cb->($_[0], $_[1]);	702	$cb->($_[0], \%hdr);
460	}	703	}
461	};	704	};
462		705
463	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
464	$finish->(undef, \%hdr);	716	$finish->("", undef, undef, 1);
465	} else {	717	} else {
466	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
467	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	747	$_[0]->push_read (chunk => $len, sub {
468	# could cache persistent connection now	748	$on_body->($_[1], \%hdr)
469	if ($hdr{connection} =~ /\bkeep-alive\b/i) {	749	or return $finish->(undef, 598 => "Request cancelled by on_body");
470	# 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);
471	};	791	});
472		792	} else {
		793	$_[0]->on_eof (sub {
473	$finish->($_[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	});
474	});	800	}
475	} else {	801	} else {
476	# too bad, need to read until we get an error or EOF,
477	# no way to detect winged data.
478	$_[0]->on_error (sub {
479	$finish->($_[0]{rbuf}, \%hdr);
480	});
481	$_[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	});
482	$_[0]->on_read (sub { });	816	$_[0]->on_read (sub { });
		817	}
483	}	818	}
484	}	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 => $3 });
		841	}
485	});	842	});
		843	} else {
		844	&$handle_actual_request;
486	});	845	}
487	}, sub {
488	$timeout
489	};	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 { $timeout });
		852
490	};	853	};
491		854
492	defined wantarray && AnyEvent::Util::guard { %state = () }	855	defined wantarray && AnyEvent::Util::guard { %state = () }
493	}	856	}
494		857
…		…
508	&http_request	871	&http_request
509	}	872	}
510		873
511	=back	874	=back
512		875
		876	=head2 DNS CACHING
		877
		878	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		879	the actual connection, which in turn uses AnyEvent::DNS to resolve
		880	hostnames. The latter is a simple stub resolver and does no caching
		881	on its own. If you want DNS caching, you currently have to provide
		882	your own default resolver (by storing a suitable resolver object in
		883	C<$AnyEvent::DNS::RESOLVER>).
		884
513	=head2 GLOBAL FUNCTIONS AND VARIABLES	885	=head2 GLOBAL FUNCTIONS AND VARIABLES
514		886
515	=over 4	887	=over 4
516		888
517	=item AnyEvent::HTTP::set_proxy "proxy-url"	889	=item AnyEvent::HTTP::set_proxy "proxy-url"
518		890
519	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
520	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.
521		906
522	=item $AnyEvent::HTTP::MAX_RECURSE	907	=item $AnyEvent::HTTP::MAX_RECURSE
523		908
524	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>).
525		910
526	=item $AnyEvent::HTTP::USERAGENT	911	=item $AnyEvent::HTTP::USERAGENT
527		912
528	The default value for the C<User-Agent> header (the default is	913	The default value for the C<User-Agent> header (the default is
529	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	914	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
530		915
531	=item $AnyEvent::HTTP::MAX_PERSISTENT	916	=item $AnyEvent::HTTP::MAX_PER_HOST
532		917
533	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.
534		921
535	Not implemented currently.	922	The default value for this is C<4>, and it is highly advisable to not
536		923	increase it.
537	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
538
539	The maximum time to cache a persistent connection, in seconds (default: 2).
540
541	Not implemented currently.
542		924
543	=item $AnyEvent::HTTP::ACTIVE	925	=item $AnyEvent::HTTP::ACTIVE
544		926
545	The number of active connections. This is not the number of currently	927	The number of active connections. This is not the number of currently
546	running requests, but the number of currently open and non-idle TCP	928	running requests, but the number of currently open and non-idle TCP
…		…
548		930
549	=back	931	=back
550		932
551	=cut	933	=cut
552		934
		935	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		936	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		937
		938	sub format_date($) {
		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, $_, $y);
		972	}
		973	}
		974
		975	undef
		976	}
		977
553	sub set_proxy($) {	978	sub set_proxy($) {
		979	if (length $_[0]) {
554	$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	}
555	}	986	}
556		987
557	# initialise proxy from environment	988	# initialise proxy from environment
		989	eval {
558	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	};
559		1048
560	=head1 SEE ALSO	1049	=head1 SEE ALSO
561		1050
562	L<AnyEvent>.	1051	L<AnyEvent>.
563		1052
564	=head1 AUTHOR	1053	=head1 AUTHOR
565		1054
566	Marc Lehmann <schmorp@schmorp.de>	1055	Marc Lehmann <schmorp@schmorp.de>
567	http://home.schmorp.de/	1056	http://home.schmorp.de/
568		1057
		1058	With many thanks to Дмитрий Шалашов, who provided countless
		1059	testcases and bugreports.
		1060
569	=cut	1061	=cut
570		1062
571	1	1063	1
572		1064

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.29 by root, Wed Oct 22 23:28:11 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 1.29 by root, Wed Oct 22 23:28:11 2008 UTC vs.
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC