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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs.
Revision 1.77 by root, Sat Jan 1 19:13:41 2011 UTC

…		…
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
49		49
50	use base Exporter::;	50	use base Exporter::;
51		51
52	our $VERSION = '1.46';	52	our $VERSION = '1.5';
53		53
54	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
55		55
56	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)";
57	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
…		…
94	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
95	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
96	destroyed before the callback is called, the request will be cancelled.	96	destroyed before the callback is called, the request will be cancelled.
97		97
98	The callback will be called with the response body data as first argument	98	The callback will be called with the response body data as first argument
99	(or C<undef> if an error occured), and a hash-ref with response headers as	99	(or C<undef> if an error occured), and a hash-ref with response headers
100	second argument.	100	(and trailers) as second argument.
101		101
102	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
103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the	104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	three parts of the HTTP Status-Line of the same name.	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>.
106		109
107	The pseudo-header C<URL> contains the actual URL (which can differ from	110	The pseudo-header C<URL> contains the actual URL (which can differ from
108	the requested URL when following redirects - for example, you might get	111	the requested URL when following redirects - for example, you might get
109	an error that your URL scheme is not supported even though your URL is a	112	an error that your URL scheme is not supported even though your URL is a
110	valid http URL because it redirected to an ftp URL, in which case you can	113	valid http URL because it redirected to an ftp URL, in which case you can
…		…
119		122
120	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
121	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
122		125
123	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,
124	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>	127	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be
125	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
126	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receive or processing.
		138
		139	=item 598 - user aborted request in C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
127		144
128	A typical callback might look like this:	145	A typical callback might look like this:
129		146
130	sub {	147	sub {
131	my ($body, $hdr) = @_;	148	my ($body, $hdr) = @_;
…		…
147	Whether to recurse requests or not, e.g. on redirects, authentication	164	Whether to recurse requests or not, e.g. on redirects, authentication
148	retries and so on, and how often to do so.	165	retries and so on, and how often to do so.
149		166
150	=item headers => hashref	167	=item headers => hashref
151		168
152	The request headers to use. Currently, C<http_request> may provide its	169	The request headers to use. Currently, C<http_request> may provide its own
153	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	170	C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and
154	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be	171	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
155	suppressed by using C<undef> for these headers in which case they won't be	172	(this can be suppressed by using C<undef> for these headers in which case
156	sent at all).	173	they won't be sent at all).
157		174
158	=item timeout => $seconds	175	=item timeout => $seconds
159		176
160	The time-out to use for various stages - each connect attempt will reset	177	The time-out to use for various stages - each connect attempt will reset
161	the timeout, as will read or write activity, i.e. this is not an overall	178	the timeout, as will read or write activity, i.e. this is not an overall
…		…
171	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	188	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
172	HTTPS.	189	HTTPS.
173		190
174	=item body => $string	191	=item body => $string
175		192
176	The request body, usually empty. Will be-sent as-is (future versions of	193	The request body, usually empty. Will be sent as-is (future versions of
177	this module might offer more options).	194	this module might offer more options).
178		195
179	=item cookie_jar => $hash_ref	196	=item cookie_jar => $hash_ref
180		197
181	Passing this parameter enables (simplified) cookie-processing, loosely	198	Passing this parameter enables (simplified) cookie-processing, loosely
182	based on the original netscape specification.	199	based on the original netscape specification.
183		200
184	The C<$hash_ref> must be an (initially empty) hash reference which will	201	The C<$hash_ref> must be an (initially empty) hash reference which will
185	get updated automatically. It is possible to save the cookie_jar to	202	get updated automatically. It is possible to save the cookie jar to
186	persistent storage with something like JSON or Storable, but this is not	203	persistent storage with something like JSON or Storable, but this is not
187	recommended, as expiry times are currently being ignored.	204	recommended, as session-only cookies might survive longer than expected.
188		205
189	Note that this cookie implementation is not of very high quality, nor	206	Note that this cookie implementation is not meant to be complete. If
190	meant to be complete. If you want complete cookie management you have to	207	you want complete cookie management you have to do that on your
191	do that on your own. C<cookie_jar> is meant as a quick fix to get some	208	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
192	cookie-using sites working. Cookies are a privacy disaster, do not use	209	working. Cookies are a privacy disaster, do not use them unless required
193	them unless required to.	210	to.
		211
		212	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		213	headers will be set and handled by this module, otherwise they will be
		214	left untouched.
194		215
195	=item tls_ctx => $scheme \| $tls_ctx	216	=item tls_ctx => $scheme \| $tls_ctx
196		217
197	Specifies the AnyEvent::TLS context to be used for https connections. This	218	Specifies the AnyEvent::TLS context to be used for https connections. This
198	parameter follows the same rules as the C<tls_ctx> parameter to	219	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
216	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)	237	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
217		238
218	In even rarer cases you want total control over how AnyEvent::HTTP	239	In even rarer cases you want total control over how AnyEvent::HTTP
219	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>	240	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
220	to do this, but you can provide your own C<tcp_connect> function -	241	to do this, but you can provide your own C<tcp_connect> function -
221	obviously, it has to follow the same calling conventions.	242	obviously, it has to follow the same calling conventions, except that it
		243	may always return a connection guard object.
222		244
223	There are probably lots of weird uses for this function, starting from	245	There are probably lots of weird uses for this function, starting from
224	tracing the hosts C<http_request> actually tries to connect, to (inexact	246	tracing the hosts C<http_request> actually tries to connect, to (inexact
225	but fast) host => IP address caching or even socks protocol support.	247	but fast) host => IP address caching or even socks protocol support.
226		248
…		…
236		258
237	This callback is useful, among other things, to quickly reject unwanted	259	This callback is useful, among other things, to quickly reject unwanted
238	content, which, if it is supposed to be rare, can be faster than first	260	content, which, if it is supposed to be rare, can be faster than first
239	doing a C<HEAD> request.	261	doing a C<HEAD> request.
240		262
		263	The downside is that cancelling the request makes it impossible to re-use
		264	the connection. Also, the C<on_header> callback will not receive any
		265	trailer (headers sent after the response body).
		266
241	Example: cancel the request unless the content-type is "text/html".	267	Example: cancel the request unless the content-type is "text/html".
242		268
243	on_header => sub {	269	on_header => sub {
244	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	270	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
245	},	271	},
…		…
251	string instead of the body data.	277	string instead of the body data.
252		278
253	It has to return either true (in which case AnyEvent::HTTP will continue),	279	It has to return either true (in which case AnyEvent::HTTP will continue),
254	or false, in which case AnyEvent::HTTP will cancel the download (and call	280	or false, in which case AnyEvent::HTTP will cancel the download (and call
255	the completion callback with an error code of C<598>).	281	the completion callback with an error code of C<598>).
		282
		283	The downside to cancelling the request is that it makes it impossible to
		284	re-use the connection.
256		285
257	This callback is useful when the data is too large to be held in memory	286	This callback is useful when the data is too large to be held in memory
258	(so the callback writes it to a file) or when only some information should	287	(so the callback writes it to a file) or when only some information should
259	be extracted, or when the body should be processed incrementally.	288	be extracted, or when the body should be processed incrementally.
260		289
…		…
286	If you think you need this, first have a look at C<on_body>, to see if	315	If you think you need this, first have a look at C<on_body>, to see if
287	that doesn't solve your problem in a better way.	316	that doesn't solve your problem in a better way.
288		317
289	=back	318	=back
290		319
291	Example: make a simple HTTP GET request for http://www.nethype.de/	320	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		321	the response body.
292		322
293	http_request GET => "http://www.nethype.de/", sub {	323	http_request GET => "http://www.nethype.de/", sub {
294	my ($body, $hdr) = @_;	324	my ($body, $hdr) = @_;
295	print "$body\n";	325	print "$body\n";
296	};	326	};
297		327
298	Example: make a HTTP HEAD request on https://www.google.com/, use a	328	Example: do a HTTP HEAD request on https://www.google.com/, use a
299	timeout of 30 seconds.	329	timeout of 30 seconds.
300		330
301	http_request	331	http_request
302	GET => "https://www.google.com",	332	GET => "https://www.google.com",
303	timeout => 30,	333	timeout => 30,
…		…
306	use Data::Dumper;	336	use Data::Dumper;
307	print Dumper $hdr;	337	print Dumper $hdr;
308	}	338	}
309	;	339	;
310		340
311	Example: make another simple HTTP GET request, but immediately try to	341	Example: do another simple HTTP GET request, but immediately try to
312	cancel it.	342	cancel it.
313		343
314	my $request = http_request GET => "http://www.nethype.de/", sub {	344	my $request = http_request GET => "http://www.nethype.de/", sub {
315	my ($body, $hdr) = @_;	345	my ($body, $hdr) = @_;
316	print "$body\n";	346	print "$body\n";
…		…
348	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	378	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
349		379
350	_slot_schedule $_[0];	380	_slot_schedule $_[0];
351	}	381	}
352		382
		383	# extract cookies from jar
		384	sub cookie_jar_extract($$$$) {
		385	my ($jar, $uscheme, $uhost, $upath) = @_;
		386
		387	%$jar = () if $jar->{version} != 1;
		388
		389	my @cookies;
		390
		391	while (my ($chost, $paths) = each %$jar) {
		392	next unless ref $paths;
		393
		394	if ($chost =~ /^\./) {
		395	next unless $chost eq substr $uhost, -length $chost;
		396	} elsif ($chost =~ /\./) {
		397	next unless $chost eq $uhost;
		398	} else {
		399	next;
		400	}
		401
		402	while (my ($cpath, $cookies) = each %$paths) {
		403	next unless $cpath eq substr $upath, 0, length $cpath;
		404
		405	while (my ($cookie, $kv) = each %$cookies) {
		406	next if $uscheme ne "https" && exists $kv->{secure};
		407
		408	if (exists $kv->{expires}) {
		409	if (AE::now > parse_date ($kv->{expires})) {
		410	delete $cookies->{$cookie};
		411	next;
		412	}
		413	}
		414
		415	my $value = $kv->{value};
		416
		417	if ($value =~ /[=;,[:space:]]/) {
		418	$value =~ s/([\\"])/\\$1/g;
		419	$value = "\"$value\"";
		420	}
		421
		422	push @cookies, "$cookie=$value";
		423	}
		424	}
		425	}
		426
		427	\@cookies
		428	}
		429
		430	# parse set_cookie header into jar
		431	sub cookie_jar_set_cookie($$$) {
		432	my ($jar, $set_cookie, $uhost) = @_;
		433
		434	for ($set_cookie) {
		435	# parse NAME=VALUE
		436	my @kv;
		437
		438	while (
		439	m{
		440	\G\s*
		441	(?:
		442	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
		443	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		444	)
		445	}gcxsi
		446	) {
		447	my $name = $2;
		448	my $value = $4;
		449
		450	unless (defined $name) {
		451	# expires
		452	$name = "expires";
		453	$value = $1;
		454	} elsif (!defined $value) {
		455	# quoted
		456	$value = $3;
		457	$value =~ s/\\(.)/$1/gs;
		458	}
		459
		460	push @kv, lc $name, $value;
		461
		462	last unless /\G\s*;/gc;
		463	}
		464
		465	last unless @kv;
		466
		467	my $name = shift @kv;
		468	my %kv = (value => shift @kv, @kv);
		469
		470	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		471	if exists $kv{"max-age"};
		472
		473	my $cdom;
		474	my $cpath = (delete $kv{path}) \|\| "/";
		475
		476	if (exists $kv{domain}) {
		477	$cdom = delete $kv{domain};
		478
		479	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		480
		481	next if $cdom =~ /\.$/;
		482
		483	# this is not rfc-like and not netscape-like. go figure.
		484	my $ndots = $cdom =~ y/.//;
		485	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		486	} else {
		487	$cdom = $uhost;
		488	}
		489
		490	# store it
		491	$jar->{version} = 1;
		492	$jar->{$cdom}{$cpath}{$name} = \%kv;
		493
		494	redo if /\G\s*,/gc;
		495	}
		496	}
		497
		498	# continue to parse $_ for headers and place them into the arg
		499	sub parse_hdr() {
		500	my %hdr;
		501
		502	# things seen, not parsed:
		503	# p3pP="NON CUR OTPi OUR NOR UNI"
		504
		505	$hdr{lc $1} .= ",$2"
		506	while /\G
		507	([^:\000-\037]*):
		508	[\011\040]*
		509	((?: [^\012]+ \| \012[\011\040] )*)
		510	\012
		511	/gxc;
		512
		513	/\G$/
		514	or return;
		515
		516	# remove the "," prefix we added to all headers above
		517	substr $_, 0, 1, ""
		518	for values %hdr;
		519
		520	\%hdr
		521	}
		522
353	our $qr_nlnl = qr{(?<![^\012])\015?\012};	523	our $qr_nlnl = qr{(?<![^\012])\015?\012};
354		524
355	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	525	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
356	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	526	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
357		527
…		…
376	my @pseudo = (URL => $url);	546	my @pseudo = (URL => $url);
377	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	547	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
378		548
379	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	549	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
380		550
381	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	551	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
382	if $recurse < 0;	552	if $recurse < 0;
383		553
384	my $proxy = $arg{proxy} \|\| $PROXY;	554	my $proxy = $arg{proxy} \|\| $PROXY;
385	my $timeout = $arg{timeout} \|\| $TIMEOUT;	555	my $timeout = $arg{timeout} \|\| $TIMEOUT;
386		556
…		…
389		559
390	$uscheme = lc $uscheme;	560	$uscheme = lc $uscheme;
391		561
392	my $uport = $uscheme eq "http" ? 80	562	my $uport = $uscheme eq "http" ? 80
393	: $uscheme eq "https" ? 443	563	: $uscheme eq "https" ? 443
394	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	564	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
395		565
396	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	566	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
397	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	567	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
398		568
399	my $uhost = $1;	569	my $uhost = $1;
400	$uport = $2 if defined $2;	570	$uport = $2 if defined $2;
401		571
402	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	572	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
407		577
408	$upath =~ s%^/?%/%;	578	$upath =~ s%^/?%/%;
409		579
410	# cookie processing	580	# cookie processing
411	if (my $jar = $arg{cookie_jar}) {	581	if (my $jar = $arg{cookie_jar}) {
412	%$jar = () if $jar->{version} != 1;	582	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
413		583
414	my @cookie;
415
416	while (my ($chost, $v) = each %$jar) {
417	if ($chost =~ /^\./) {
418	next unless $chost eq substr $uhost, -length $chost;
419	} elsif ($chost =~ /\./) {
420	next unless $chost eq $uhost;
421	} else {
422	next;
423	}
424
425	while (my ($cpath, $v) = each %$v) {
426	next unless $cpath eq substr $upath, 0, length $cpath;
427
428	while (my ($k, $v) = each %$v) {
429	next if $uscheme ne "https" && exists $v->{secure};
430	my $value = $v->{value};
431	$value =~ s/([\\"])/\\$1/g;
432	push @cookie, "$k=\"$value\"";
433	}
434	}
435	}
436
437	$hdr{cookie} = join "; ", @cookie	584	$hdr{cookie} = join "; ", @$cookies
438	if @cookie;	585	if @$cookies;
439	}	586	}
440		587
441	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	588	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
442		589
443	if ($proxy) {	590	if ($proxy) {
…		…
451	} else {	598	} else {
452	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	599	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
453	}	600	}
454		601
455	# leave out fragment and query string, just a heuristic	602	# leave out fragment and query string, just a heuristic
456	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	603	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
457	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	604	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
458		605
459	$hdr{"content-length"} = length $arg{body}	606	$hdr{"content-length"} = length $arg{body}
460	if length $arg{body} \|\| $method ne "GET";	607	if length $arg{body} \|\| $method ne "GET";
461		608
		609	$hdr{connection} = "close TE"; #1.1
		610	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		611
462	my %state = (connect_guard => 1);	612	my %state = (connect_guard => 1);
463		613
464	_get_slot $uhost, sub {	614	_get_slot $uhost, sub {
465	$state{slot_guard} = shift;	615	$state{slot_guard} = shift;
466		616
467	return unless $state{connect_guard};	617	return unless $state{connect_guard};
468		618
469	my $tcp_connect = $arg{tcp_connect}	619	my $ae_error = 595; # connecting
470	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
471		620
472	$state{connect_guard} = $tcp_connect->(	621	my $connect_cb = sub {
473	$rhost,
474	$rport,
475	sub {
476	$state{fh} = shift	622	$state{fh} = shift
477	or do {	623	or do {
478	my $err = "$!";	624	my $err = "$!";
479	%state = ();	625	%state = ();
480	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	626	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
481	};	627	};
482		628
483	pop; # free memory, save a tree
484
485	return unless delete $state{connect_guard};	629	return unless delete $state{connect_guard};
486		630
487	# get handle	631	# get handle
488	$state{handle} = new AnyEvent::Handle	632	$state{handle} = new AnyEvent::Handle
489	fh => $state{fh},	633	fh => $state{fh},
490	peername => $rhost,	634	peername => $rhost,
491	tls_ctx => $arg{tls_ctx},	635	tls_ctx => $arg{tls_ctx},
492	# these need to be reconfigured on keepalive handles	636	# these need to be reconfigured on keepalive handles
493	timeout => $timeout,	637	timeout => $timeout,
494	on_error => sub {	638	on_error => sub {
495	%state = ();	639	%state = ();
496	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	640	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
497	},	641	},
498	on_eof => sub {	642	on_eof => sub {
499	%state = ();	643	%state = ();
500	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	644	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
501	},	645	},
502	;	646	;
503		647
504	# limit the number of persistent connections	648	# limit the number of persistent connections
505	# keepalive not yet supported	649	# keepalive not yet supported
506	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	650	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
507	# ++$KA_COUNT{$_[1]};	651	# ++$KA_COUNT{$_[1]};
508	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	652	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
509	# --$KA_COUNT{$_[1]}	653	# --$KA_COUNT{$_[1]}
510	# };	654	# };
511	# $hdr{connection} = "keep-alive";	655	# $hdr{connection} = "keep-alive";
512	# } else {
513	delete $hdr{connection};
514	# }	656	# }
515		657
516	$state{handle}->starttls ("connect") if $rscheme eq "https";	658	$state{handle}->starttls ("connect") if $rscheme eq "https";
517		659
518	# handle actual, non-tunneled, request	660	# handle actual, non-tunneled, request
519	my $handle_actual_request = sub {	661	my $handle_actual_request = sub {
		662	$ae_error = 596; # request phase
		663
520	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	664	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
521		665
522	# send request	666	# send request
523	$state{handle}->push_write (	667	$state{handle}->push_write (
524	"$method $rpath HTTP/1.0\015\012"	668	"$method $rpath HTTP/1.1\015\012"
525	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	669	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
526	. "\015\012"	670	. "\015\012"
527	. (delete $arg{body})	671	. (delete $arg{body})
528	);	672	);
529		673
530	# return if error occured during push_write()	674	# return if error occured during push_write()
531	return unless %state;	675	return unless %state;
532		676
533	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	677	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
534		678
535	# status line and headers	679	# status line and headers
536	$state{handle}->push_read (line => $qr_nlnl, sub {	680	$state{read_response} = sub {
537	for ("$_[1]") {	681	for ("$_[1]") {
538	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	682	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
539		683
540	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc	684	/^HTTP\/0([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]) )? \012/gxci
541	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));	685	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
542		686
		687	# 100 Continue handling
		688	# should not happen as we don't send expect: 100-continue,
		689	# but we handle it just in case.
		690	# since we send the request body regardless, if we get an error
		691	# we are out of-sync, which we currently do NOT handle correctly.
		692	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		693	if $2 eq 100;
		694
543	push @pseudo,	695	push @pseudo,
544	HTTPVersion => $1,	696	HTTPVersion => $1,
545	Status => $2,	697	Status => $2,
546	Reason => $3,	698	Reason => $3,
547	;	699	;
548		700
549	# things seen, not parsed:	701	my $hdr = parse_hdr
550	# p3pP="NON CUR OTPi OUR NOR UNI"
551
552	$hdr{lc $1} .= ",$2"
553	while /\G
554	([^:\000-\037]*):
555	[\011\040]*
556	((?: [^\012]+ \| \012[\011\040] )*)
557	\012
558	/gxc;
559
560	/\G$/
561	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));	702	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		703
		704	%hdr = (%$hdr, @pseudo);
		705	}
		706
		707	# redirect handling
		708	# microsoft and other shitheads don't give a shit for following standards,
		709	# try to support some common forms of broken Location headers.
		710	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		711	$hdr{location} =~ s/^\.\/+//;
		712
		713	my $url = "$rscheme://$uhost:$uport";
		714
		715	unless ($hdr{location} =~ s/^\///) {
		716	$url .= $upath;
		717	$url =~ s/\/[^\/]*$//;
562	}	718	}
563		719
564	# remove the "," prefix we added to all headers above	720	$hdr{location} = "$url/$hdr{location}";
565	substr $_, 0, 1, ""	721	}
566	for values %hdr;
567		722
568	# patch in all pseudo headers	723	my $redirect;
569	%hdr = (%hdr, @pseudo);
570		724
		725	if ($recurse) {
		726	my $status = $hdr{Status};
		727
		728	# industry standard is to redirect POST as GET for
		729	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		730	# also, the UA should ask the user for 301 and 307 and POST,
		731	# industry standard seems to be to simply follow.
		732	# we go with the industry standard.
		733	if ($status == 301 or $status == 302 or $status == 303) {
		734	# HTTP/1.1 is unclear on how to mutate the method
		735	$method = "GET" unless $method eq "HEAD";
571	# redirect handling	736	$redirect = 1;
572	# microsoft and other shitheads don't give a shit for following standards,	737	} elsif ($status == 307) {
573	# try to support some common forms of broken Location headers.	738	$redirect = 1;
574	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	739	}
575	$hdr{location} =~ s/^\.\/+//;	740	}
576		741
577	my $url = "$rscheme://$uhost:$uport";	742	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		743	my $may_keep_alive = $_[3];
578		744
579	unless ($hdr{location} =~ s/^\///) {	745	$state{handle}->destroy if $state{handle};
		746	%state = ();
		747
		748	if (defined $_[1]) {
		749	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		750	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		751	}
		752
		753	# set-cookie processing
		754	if ($arg{cookie_jar}) {
		755	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		756	}
		757
		758	if ($redirect && exists $hdr{location}) {
		759	# we ignore any errors, as it is very common to receive
		760	# Content-Length != 0 but no actual body
		761	# we also access %hdr, as $_[1] might be an erro
		762	http_request (
		763	$method => $hdr{location},
		764	%arg,
		765	recurse => $recurse - 1,
		766	Redirect => [$_[0], \%hdr],
		767	$cb);
		768	} else {
		769	$cb->($_[0], \%hdr);
		770	}
		771	};
		772
		773	$ae_error = 597; # body phase
		774
		775	my $len = $hdr{"content-length"};
		776
		777	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		778	$finish->(undef, 598 => "Request cancelled by on_header");
		779	} elsif (
		780	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		781	or $method eq "HEAD"
		782	or (defined $len && !$len)
		783	) {
		784	# no body
		785	$finish->("", undef, undef, 1);
		786	} else {
		787	# body handling, many different code paths
		788	# - no body expected
		789	# - want_body_handle
		790	# - te chunked
		791	# - 2x length known (with or without on_body)
		792	# - 2x length not known (with or without on_body)
		793	if (!$redirect && $arg{want_body_handle}) {
		794	$_[0]->on_eof (undef);
		795	$_[0]->on_error (undef);
		796	$_[0]->on_read (undef);
		797
		798	$finish->(delete $state{handle});
		799
		800	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		801	my $cl = 0;
		802	my $body = undef;
		803	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		804
		805	my $read_chunk; $read_chunk = sub {
		806	$_[1] =~ /^([0-9a-fA-F]+)/
		807	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		808
		809	my $len = hex $1;
		810
		811	if ($len) {
580	$url .= $upath;	812	$cl += $len;
581	$url =~ s/\/[^\/]*$//;	813
		814	$_[0]->push_read (chunk => $len, sub {
		815	$on_body->($_[1], \%hdr)
		816	or return $finish->(undef, 598 => "Request cancelled by on_body");
		817
		818	$_[0]->push_read (line => sub {
		819	length $_[1]
		820	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		821	$_[0]->push_read (line => $read_chunk);
		822	});
		823	});
		824	} else {
		825	$hdr{"content-length"} \|\|= $cl;
		826
		827	$_[0]->push_read (line => $qr_nlnl, sub {
		828	if (length $_[1]) {
		829	for ("$_[1]") {
		830	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		831
		832	my $hdr = parse_hdr
		833	or return $finish->(undef, $ae_error => "Garbled response trailers");
		834
		835	%hdr = (%hdr, %$hdr);
		836	}
		837	}
		838
		839	$finish->($body, undef, undef, 1);
		840	});
		841	}
		842	};
		843
		844	$_[0]->push_read (line => $read_chunk);
		845
		846	} elsif ($arg{on_body}) {
		847	if ($len) {
		848	$_[0]->on_read (sub {
		849	$len -= length $_[0]{rbuf};
		850
		851	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		852	or return $finish->(undef, 598 => "Request cancelled by on_body");
		853
		854	$len > 0
		855	or $finish->("", undef, undef, 1);
		856	});
		857	} else {
		858	$_[0]->on_eof (sub {
		859	$finish->("");
		860	});
		861	$_[0]->on_read (sub {
		862	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		863	or $finish->(undef, 598 => "Request cancelled by on_body");
		864	});
582	}	865	}
583
584	$hdr{location} = "$url/$hdr{location}";
585	}	866	} else {
		867	$_[0]->on_eof (undef);
586		868
587	my $redirect;
588
589	if ($recurse) {	869	if ($len) {
590	my $status = $hdr{Status};	870	$_[0]->on_read (sub {
591		871	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
592	# industry standard is to redirect POST as GET for	872	if $len <= length $_[0]{rbuf};
593	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
594	# also, the UA should ask the user for 301 and 307 and POST,
595	# industry standard seems to be to simply follow.
596	# we go with the industry standard.
597	if ($status == 301 or $status == 302 or $status == 303) {
598	# HTTP/1.1 is unclear on how to mutate the method
599	$method = "GET" unless $method eq "HEAD";
600	$redirect = 1;	873	});
601	} elsif ($status == 307) {	874	} else {
		875	$_[0]->on_error (sub {
		876	($! == Errno::EPIPE \|\| !$!)
		877	? $finish->(delete $_[0]{rbuf})
		878	: $finish->(undef, $ae_error => $_[2]);
602	$redirect = 1;	879	});
		880	$_[0]->on_read (sub { });
603	}	881	}
604	}	882	}
605
606	my $finish = sub {
607	$state{handle}->destroy if $state{handle};
608	%state = ();
609
610	# set-cookie processing
611	if ($arg{cookie_jar}) {
612	for ($_[1]{"set-cookie"}) {
613	# parse NAME=VALUE
614	my @kv;
615
616	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
617	my $name = $1;
618	my $value = $3;
619
620	unless ($value) {
621	$value = $2;
622	$value =~ s/\\(.)/$1/gs;
623	}
624
625	push @kv, $name => $value;
626
627	last unless /\G\s*;/gc;
628	}
629
630	last unless @kv;
631
632	my $name = shift @kv;
633	my %kv = (value => shift @kv, @kv);
634
635	my $cdom;
636	my $cpath = (delete $kv{path}) \|\| "/";
637
638	if (exists $kv{domain}) {
639	$cdom = delete $kv{domain};
640
641	$cdom =~ s/^\.?/./; # make sure it starts with a "."
642
643	next if $cdom =~ /\.$/;
644
645	# this is not rfc-like and not netscape-like. go figure.
646	my $ndots = $cdom =~ y/.//;
647	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
648	} else {
649	$cdom = $uhost;
650	}
651
652	# store it
653	$arg{cookie_jar}{version} = 1;
654	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
655
656	redo if /\G\s*,/gc;
657	}
658	}
659
660	if ($redirect && exists $hdr{location}) {
661	# we ignore any errors, as it is very common to receive
662	# Content-Length != 0 but no actual body
663	# we also access %hdr, as $_[1] might be an erro
664	http_request (
665	$method => $hdr{location},
666	%arg,
667	recurse => $recurse - 1,
668	Redirect => \@_,
669	$cb);
670	} else {
671	$cb->($_[0], $_[1]);
672	}
673	};
674
675	my $len = $hdr{"content-length"};
676
677	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
678	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
679	} elsif (
680	$hdr{Status} =~ /^(?:1..\|[23]04)$/
681	or $method eq "HEAD"
682	or (defined $len && !$len)
683	) {
684	# no body
685	$finish->("", \%hdr);
686	} else {
687	# body handling, four different code paths
688	# for want_body_handle, on_body (2x), normal (2x)
689	# we might read too much here, but it does not matter yet (no pers. connections)
690	if (!$redirect && $arg{want_body_handle}) {
691	$_[0]->on_eof (undef);
692	$_[0]->on_error (undef);
693	$_[0]->on_read (undef);
694
695	$finish->(delete $state{handle}, \%hdr);
696
697	} elsif ($arg{on_body}) {
698	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
699	if ($len) {
700	$_[0]->on_eof (undef);
701	$_[0]->on_read (sub {
702	$len -= length $_[0]{rbuf};
703
704	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
705	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
706
707	$len > 0
708	or $finish->("", \%hdr);
709	});
710	} else {
711	$_[0]->on_eof (sub {
712	$finish->("", \%hdr);
713	});
714	$_[0]->on_read (sub {
715	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
716	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
717	});
718	}
719	} else {
720	$_[0]->on_eof (undef);
721
722	if ($len) {
723	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
724	$_[0]->on_read (sub {
725	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
726	if $len <= length $_[0]{rbuf};
727	});
728	} else {
729	$_[0]->on_error (sub {
730	($! == Errno::EPIPE \|\| !$!)
731	? $finish->(delete $_[0]{rbuf}, \%hdr)
732	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
733	});
734	$_[0]->on_read (sub { });
735	}
736	}
737	}
738	});	883	}
739	};	884	};
740		885
		886	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		887	};
		888
741	# now handle proxy-CONNECT method	889	# now handle proxy-CONNECT method
742	if ($proxy && $uscheme eq "https") {	890	if ($proxy && $uscheme eq "https") {
743	# oh dear, we have to wrap it into a connect request	891	# oh dear, we have to wrap it into a connect request
744		892
745	# maybe re-use $uauthority with patched port?	893	# maybe re-use $uauthority with patched port?
746	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	894	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
747	$state{handle}->push_read (line => $qr_nlnl, sub {	895	$state{handle}->push_read (line => $qr_nlnl, sub {
748	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	896	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
749	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));	897	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
750		898
751	if ($2 == 200) {	899	if ($2 == 200) {
752	$rpath = $upath;	900	$rpath = $upath;
753	&$handle_actual_request;	901	&$handle_actual_request;
754	} else {	902	} else {
755	%state = ();	903	%state = ();
756	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	904	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
757	}
758	});	905	}
		906	});
759	} else {	907	} else {
760	&$handle_actual_request;	908	&$handle_actual_request;
761	}
762
763	},	909	}
764	$arg{on_prepare} \|\| sub { $timeout }
765	);	910	};
		911
		912	my $tcp_connect = $arg{tcp_connect}
		913	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		914
		915	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		916
766	};	917	};
767		918
768	defined wantarray && AnyEvent::Util::guard { %state = () }	919	defined wantarray && AnyEvent::Util::guard { %state = () }
769	}	920	}
770		921
…		…
805	string of the form C<http://host:port> (optionally C<https:...>), croaks	956	string of the form C<http://host:port> (optionally C<https:...>), croaks
806	otherwise.	957	otherwise.
807		958
808	To clear an already-set proxy, use C<undef>.	959	To clear an already-set proxy, use C<undef>.
809		960
		961	=item $date = AnyEvent::HTTP::format_date $timestamp
		962
		963	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		964	Date (RFC 2616).
		965
		966	=item $timestamp = AnyEvent::HTTP::parse_date $date
		967
		968	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
		969	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		970	be parsed.
		971
810	=item $AnyEvent::HTTP::MAX_RECURSE	972	=item $AnyEvent::HTTP::MAX_RECURSE
811		973
812	The default value for the C<recurse> request parameter (default: C<10>).	974	The default value for the C<recurse> request parameter (default: C<10>).
813		975
814	=item $AnyEvent::HTTP::USERAGENT	976	=item $AnyEvent::HTTP::USERAGENT
…		…
832	connections. This number of can be useful for load-leveling.	994	connections. This number of can be useful for load-leveling.
833		995
834	=back	996	=back
835		997
836	=cut	998	=cut
		999
		1000	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1001	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1002
		1003	sub format_date($) {
		1004	my ($time) = @_;
		1005
		1006	# RFC 822/1123 format
		1007	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1008
		1009	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1010	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1011	$H, $M, $S;
		1012	}
		1013
		1014	sub parse_date($) {
		1015	my ($date) = @_;
		1016
		1017	my ($d, $m, $y, $H, $M, $S);
		1018
		1019	if ($date =~ /^[A-Z][a-z][a-z], ([0-9][0-9])[\- ]([A-Z][a-z][a-z])[\- ]([0-9][0-9][0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) {
		1020	# RFC 822/1123, required by RFC 2616 (with " ")
		1021	# cookie dates (with "-")
		1022
		1023	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1024
		1025	} elsif ($date =~ /^[A-Z][a-z]+, ([0-9][0-9])-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) {
		1026	# RFC 850
		1027	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1028
		1029	} elsif ($date =~ /^[A-Z][a-z][a-z] ([A-Z][a-z][a-z]) ([0-9 ][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) ([0-9][0-9][0-9][0-9])$/) {
		1030	# ISO C's asctime
		1031	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1032	}
		1033	# other formats fail in the loop below
		1034
		1035	for (0..11) {
		1036	if ($m eq $month[$_]) {
		1037	require Time::Local;
		1038	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1039	}
		1040	}
		1041
		1042	undef
		1043	}
837		1044
838	sub set_proxy($) {	1045	sub set_proxy($) {
839	if (length $_[0]) {	1046	if (length $_[0]) {
840	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1047	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
841	or Carp::croak "$_[0]: invalid proxy URL";	1048	or Carp::croak "$_[0]: invalid proxy URL";
…		…
848	# initialise proxy from environment	1055	# initialise proxy from environment
849	eval {	1056	eval {
850	set_proxy $ENV{http_proxy};	1057	set_proxy $ENV{http_proxy};
851	};	1058	};
852		1059
		1060	=head2 SOCKS PROXIES
		1061
		1062	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1063	compile your perl to support socks, or use an external program such as
		1064	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1065	transparently.
		1066
		1067	Alternatively, for AnyEvent::HTTP only, you can use your own
		1068	C<tcp_connect> function that does the proxy handshake - here is an example
		1069	that works with socks4a proxies:
		1070
		1071	use Errno;
		1072	use AnyEvent::Util;
		1073	use AnyEvent::Socket;
		1074	use AnyEvent::Handle;
		1075
		1076	# host, port and username of/for your socks4a proxy
		1077	my $socks_host = "10.0.0.23";
		1078	my $socks_port = 9050;
		1079	my $socks_user = "";
		1080
		1081	sub socks4a_connect {
		1082	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1083
		1084	my $hdl = new AnyEvent::Handle
		1085	connect => [$socks_host, $socks_port],
		1086	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1087	on_error => sub { $connect_cb->() },
		1088	;
		1089
		1090	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1091
		1092	$hdl->push_read (chunk => 8, sub {
		1093	my ($hdl, $chunk) = @_;
		1094	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1095
		1096	if ($status == 0x5a) {
		1097	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1098	} else {
		1099	$! = Errno::ENXIO; $connect_cb->();
		1100	}
		1101	});
		1102
		1103	$hdl
		1104	}
		1105
		1106	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1107	possibly after switching off other proxy types:
		1108
		1109	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1110
		1111	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1112	my ($data, $headers) = @_;
		1113	...
		1114	};
		1115
853	=head1 SEE ALSO	1116	=head1 SEE ALSO
854		1117
855	L<AnyEvent>.	1118	L<AnyEvent>.
856		1119
857	=head1 AUTHOR	1120	=head1 AUTHOR

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs. Revision 1.77 by root, Sat Jan 1 19:13:41 2011 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs.
Revision 1.77 by root, Sat Jan 1 19:13:41 2011 UTC