[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 1.79 by root, Sat Jan 1 20:01:07 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<< $headers->{Status} >> will be
125	(usually C<599>) and the C<Reason> pseudo-header will contain an error	128	C<590>-C<599> and the C<Reason> pseudo-header will contain an error
126	message.	129	message. Currently the following status codes are used:
		130
		131	=over 4
		132
		133	=item 595 - errors during connection etsbalishment, proxy handshake.
		134
		135	=item 596 - errors during TLS negotiation, request sending and header processing.
		136
		137	=item 597 - errors during body receiving or processing.
		138
		139	=item 598 - user aborted request via C<on_header> or C<on_body>.
		140
		141	=item 599 - other, usually nonretryable, errors (garbled URL etc.).
		142
		143	=back
127		144
128	A typical callback might look like this:	145	A typical callback might look like this:
129		146
130	sub {	147	sub {
131	my ($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	# expires is not http-compliant in the original cookie-spec,
		439	# we support the official date format and some extensions
		440	while (
		441	m{
		442	\G\s*
		443	(?:
		444	expires \s=\s ([A-Z][a-z][a-z]+,\ [^,;]+)
		445	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		446	)
		447	}gcxsi
		448	) {
		449	my $name = $2;
		450	my $value = $4;
		451
		452	unless (defined $name) {
		453	# expires
		454	$name = "expires";
		455	$value = $1;
		456	} elsif (!defined $value) {
		457	# quoted
		458	$value = $3;
		459	$value =~ s/\\(.)/$1/gs;
		460	}
		461
		462	push @kv, lc $name, $value;
		463
		464	last unless /\G\s*;/gc;
		465	}
		466
		467	last unless @kv;
		468
		469	my $name = shift @kv;
		470	my %kv = (value => shift @kv, @kv);
		471
		472	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		473	if exists $kv{"max-age"};
		474
		475	my $cdom;
		476	my $cpath = (delete $kv{path}) \|\| "/";
		477
		478	if (exists $kv{domain}) {
		479	$cdom = delete $kv{domain};
		480
		481	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		482
		483	next if $cdom =~ /\.$/;
		484
		485	# this is not rfc-like and not netscape-like. go figure.
		486	my $ndots = $cdom =~ y/.//;
		487	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		488	} else {
		489	$cdom = $uhost;
		490	}
		491
		492	# store it
		493	$jar->{version} = 1;
		494	$jar->{$cdom}{$cpath}{$name} = \%kv;
		495
		496	redo if /\G\s*,/gc;
		497	}
		498	}
		499
		500	# continue to parse $_ for headers and place them into the arg
		501	sub parse_hdr() {
		502	my %hdr;
		503
		504	# things seen, not parsed:
		505	# p3pP="NON CUR OTPi OUR NOR UNI"
		506
		507	$hdr{lc $1} .= ",$2"
		508	while /\G
		509	([^:\000-\037]*):
		510	[\011\040]*
		511	((?: [^\012]+ \| \012[\011\040] )*)
		512	\012
		513	/gxc;
		514
		515	/\G$/
		516	or return;
		517
		518	# remove the "," prefix we added to all headers above
		519	substr $_, 0, 1, ""
		520	for values %hdr;
		521
		522	\%hdr
		523	}
		524
353	our $qr_nlnl = qr{(?<![^\012])\015?\012};	525	our $qr_nlnl = qr{(?<![^\012])\015?\012};
354		526
355	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	527	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
356	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	528	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
357		529
…		…
376	my @pseudo = (URL => $url);	548	my @pseudo = (URL => $url);
377	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	549	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
378		550
379	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	551	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
380		552
381	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	553	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
382	if $recurse < 0;	554	if $recurse < 0;
383		555
384	my $proxy = $arg{proxy} \|\| $PROXY;	556	my $proxy = $arg{proxy} \|\| $PROXY;
385	my $timeout = $arg{timeout} \|\| $TIMEOUT;	557	my $timeout = $arg{timeout} \|\| $TIMEOUT;
386		558
…		…
389		561
390	$uscheme = lc $uscheme;	562	$uscheme = lc $uscheme;
391		563
392	my $uport = $uscheme eq "http" ? 80	564	my $uport = $uscheme eq "http" ? 80
393	: $uscheme eq "https" ? 443	565	: $uscheme eq "https" ? 443
394	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	566	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
395		567
396	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	568	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
397	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	569	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
398		570
399	my $uhost = $1;	571	my $uhost = $1;
400	$uport = $2 if defined $2;	572	$uport = $2 if defined $2;
401		573
402	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	574	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
407		579
408	$upath =~ s%^/?%/%;	580	$upath =~ s%^/?%/%;
409		581
410	# cookie processing	582	# cookie processing
411	if (my $jar = $arg{cookie_jar}) {	583	if (my $jar = $arg{cookie_jar}) {
412	%$jar = () if $jar->{version} != 1;	584	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
413		585
414	my @cookie;
415
416	while (my ($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	586	$hdr{cookie} = join "; ", @$cookies
438	if @cookie;	587	if @$cookies;
439	}	588	}
440		589
441	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	590	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
442		591
443	if ($proxy) {	592	if ($proxy) {
…		…
451	} else {	600	} else {
452	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	601	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
453	}	602	}
454		603
455	# leave out fragment and query string, just a heuristic	604	# leave out fragment and query string, just a heuristic
456	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	605	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
457	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	606	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
458		607
459	$hdr{"content-length"} = length $arg{body}	608	$hdr{"content-length"} = length $arg{body}
460	if length $arg{body} \|\| $method ne "GET";	609	if length $arg{body} \|\| $method ne "GET";
461		610
		611	$hdr{connection} = "close TE"; #1.1
		612	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		613
462	my %state = (connect_guard => 1);	614	my %state = (connect_guard => 1);
463		615
464	_get_slot $uhost, sub {	616	_get_slot $uhost, sub {
465	$state{slot_guard} = shift;	617	$state{slot_guard} = shift;
466		618
467	return unless $state{connect_guard};	619	return unless $state{connect_guard};
468		620
469	my $tcp_connect = $arg{tcp_connect}	621	my $ae_error = 595; # connecting
470	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
471		622
472	$state{connect_guard} = $tcp_connect->(	623	my $connect_cb = sub {
473	$rhost,
474	$rport,
475	sub {
476	$state{fh} = shift	624	$state{fh} = shift
477	or do {	625	or do {
478	my $err = "$!";	626	my $err = "$!";
479	%state = ();	627	%state = ();
480	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	628	return $cb->(undef, { @pseudo, Status => $ae_error, Reason => $err });
481	};	629	};
482		630
483	pop; # free memory, save a tree
484
485	return unless delete $state{connect_guard};	631	return unless delete $state{connect_guard};
486		632
487	# get handle	633	# get handle
488	$state{handle} = new AnyEvent::Handle	634	$state{handle} = new AnyEvent::Handle
489	fh => $state{fh},	635	fh => $state{fh},
490	peername => $rhost,	636	peername => $rhost,
491	tls_ctx => $arg{tls_ctx},	637	tls_ctx => $arg{tls_ctx},
492	# these need to be reconfigured on keepalive handles	638	# these need to be reconfigured on keepalive handles
493	timeout => $timeout,	639	timeout => $timeout,
494	on_error => sub {	640	on_error => sub {
495	%state = ();	641	%state = ();
496	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	642	$cb->(undef, { @pseudo, Status => $ae_error, Reason => $_[2] });
497	},	643	},
498	on_eof => sub {	644	on_eof => sub {
499	%state = ();	645	%state = ();
500	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	646	$cb->(undef, { @pseudo, Status => $ae_error, Reason => "Unexpected end-of-file" });
501	},	647	},
502	;	648	;
503		649
504	# limit the number of persistent connections	650	# limit the number of persistent connections
505	# keepalive not yet supported	651	# keepalive not yet supported
506	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	652	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
507	# ++$KA_COUNT{$_[1]};	653	# ++$KA_COUNT{$_[1]};
508	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	654	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
509	# --$KA_COUNT{$_[1]}	655	# --$KA_COUNT{$_[1]}
510	# };	656	# };
511	# $hdr{connection} = "keep-alive";	657	# $hdr{connection} = "keep-alive";
512	# } else {
513	delete $hdr{connection};
514	# }	658	# }
515		659
516	$state{handle}->starttls ("connect") if $rscheme eq "https";	660	$state{handle}->starttls ("connect") if $rscheme eq "https";
517		661
518	# handle actual, non-tunneled, request	662	# handle actual, non-tunneled, request
519	my $handle_actual_request = sub {	663	my $handle_actual_request = sub {
		664	$ae_error = 596; # request phase
		665
520	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	666	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
521		667
522	# send request	668	# send request
523	$state{handle}->push_write (	669	$state{handle}->push_write (
524	"$method $rpath HTTP/1.0\015\012"	670	"$method $rpath HTTP/1.1\015\012"
525	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	671	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
526	. "\015\012"	672	. "\015\012"
527	. (delete $arg{body})	673	. (delete $arg{body})
528	);	674	);
529		675
530	# return if error occured during push_write()	676	# return if error occured during push_write()
531	return unless %state;	677	return unless %state;
532		678
533	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	679	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
534		680
535	# status line and headers	681	# status line and headers
536	$state{handle}->push_read (line => $qr_nlnl, sub {	682	$state{read_response} = sub {
537	for ("$_[1]") {	683	for ("$_[1]") {
538	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	684	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
539		685
540	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc	686	/^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 }));	687	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
542		688
		689	# 100 Continue handling
		690	# should not happen as we don't send expect: 100-continue,
		691	# but we handle it just in case.
		692	# since we send the request body regardless, if we get an error
		693	# we are out of-sync, which we currently do NOT handle correctly.
		694	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		695	if $2 eq 100;
		696
543	push @pseudo,	697	push @pseudo,
544	HTTPVersion => $1,	698	HTTPVersion => $1,
545	Status => $2,	699	Status => $2,
546	Reason => $3,	700	Reason => $3,
547	;	701	;
548		702
549	# things seen, not parsed:	703	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 }));	704	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		705
		706	%hdr = (%$hdr, @pseudo);
		707	}
		708
		709	# redirect handling
		710	# microsoft and other shitheads don't give a shit for following standards,
		711	# try to support some common forms of broken Location headers.
		712	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		713	$hdr{location} =~ s/^\.\/+//;
		714
		715	my $url = "$rscheme://$uhost:$uport";
		716
		717	unless ($hdr{location} =~ s/^\///) {
		718	$url .= $upath;
		719	$url =~ s/\/[^\/]*$//;
562	}	720	}
563		721
564	# remove the "," prefix we added to all headers above	722	$hdr{location} = "$url/$hdr{location}";
565	substr $_, 0, 1, ""	723	}
566	for values %hdr;
567		724
568	# patch in all pseudo headers	725	my $redirect;
569	%hdr = (%hdr, @pseudo);
570		726
		727	if ($recurse) {
		728	my $status = $hdr{Status};
		729
		730	# industry standard is to redirect POST as GET for
		731	# 301, 302 and 303, in contrast to HTTP/1.0 and 1.1.
		732	# also, the UA should ask the user for 301 and 307 and POST,
		733	# industry standard seems to be to simply follow.
		734	# we go with the industry standard.
		735	if ($status == 301 or $status == 302 or $status == 303) {
		736	# HTTP/1.1 is unclear on how to mutate the method
		737	$method = "GET" unless $method eq "HEAD";
571	# redirect handling	738	$redirect = 1;
572	# microsoft and other shitheads don't give a shit for following standards,	739	} elsif ($status == 307) {
573	# try to support some common forms of broken Location headers.	740	$redirect = 1;
574	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	741	}
575	$hdr{location} =~ s/^\.\/+//;	742	}
576		743
577	my $url = "$rscheme://$uhost:$uport";	744	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		745	my $may_keep_alive = $_[3];
578		746
579	unless ($hdr{location} =~ s/^\///) {	747	$state{handle}->destroy if $state{handle};
		748	%state = ();
		749
		750	if (defined $_[1]) {
		751	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		752	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		753	}
		754
		755	# set-cookie processing
		756	if ($arg{cookie_jar}) {
		757	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		758	}
		759
		760	if ($redirect && exists $hdr{location}) {
		761	# we ignore any errors, as it is very common to receive
		762	# Content-Length != 0 but no actual body
		763	# we also access %hdr, as $_[1] might be an erro
		764	http_request (
		765	$method => $hdr{location},
		766	%arg,
		767	recurse => $recurse - 1,
		768	Redirect => [$_[0], \%hdr],
		769	$cb);
		770	} else {
		771	$cb->($_[0], \%hdr);
		772	}
		773	};
		774
		775	$ae_error = 597; # body phase
		776
		777	my $len = $hdr{"content-length"};
		778
		779	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		780	$finish->(undef, 598 => "Request cancelled by on_header");
		781	} elsif (
		782	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		783	or $method eq "HEAD"
		784	or (defined $len && !$len)
		785	) {
		786	# no body
		787	$finish->("", undef, undef, 1);
		788	} else {
		789	# body handling, many different code paths
		790	# - no body expected
		791	# - want_body_handle
		792	# - te chunked
		793	# - 2x length known (with or without on_body)
		794	# - 2x length not known (with or without on_body)
		795	if (!$redirect && $arg{want_body_handle}) {
		796	$_[0]->on_eof (undef);
		797	$_[0]->on_error (undef);
		798	$_[0]->on_read (undef);
		799
		800	$finish->(delete $state{handle});
		801
		802	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		803	my $cl = 0;
		804	my $body = undef;
		805	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		806
		807	my $read_chunk; $read_chunk = sub {
		808	$_[1] =~ /^([0-9a-fA-F]+)/
		809	or $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		810
		811	my $len = hex $1;
		812
		813	if ($len) {
580	$url .= $upath;	814	$cl += $len;
581	$url =~ s/\/[^\/]*$//;	815
		816	$_[0]->push_read (chunk => $len, sub {
		817	$on_body->($_[1], \%hdr)
		818	or return $finish->(undef, 598 => "Request cancelled by on_body");
		819
		820	$_[0]->push_read (line => sub {
		821	length $_[1]
		822	and return $finish->(undef, $ae_error => "Garbled chunked transfer encoding");
		823	$_[0]->push_read (line => $read_chunk);
		824	});
		825	});
		826	} else {
		827	$hdr{"content-length"} \|\|= $cl;
		828
		829	$_[0]->push_read (line => $qr_nlnl, sub {
		830	if (length $_[1]) {
		831	for ("$_[1]") {
		832	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		833
		834	my $hdr = parse_hdr
		835	or return $finish->(undef, $ae_error => "Garbled response trailers");
		836
		837	%hdr = (%hdr, %$hdr);
		838	}
		839	}
		840
		841	$finish->($body, undef, undef, 1);
		842	});
		843	}
		844	};
		845
		846	$_[0]->push_read (line => $read_chunk);
		847
		848	} elsif ($arg{on_body}) {
		849	if ($len) {
		850	$_[0]->on_read (sub {
		851	$len -= length $_[0]{rbuf};
		852
		853	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		854	or return $finish->(undef, 598 => "Request cancelled by on_body");
		855
		856	$len > 0
		857	or $finish->("", undef, undef, 1);
		858	});
		859	} else {
		860	$_[0]->on_eof (sub {
		861	$finish->("");
		862	});
		863	$_[0]->on_read (sub {
		864	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		865	or $finish->(undef, 598 => "Request cancelled by on_body");
		866	});
582	}	867	}
583
584	$hdr{location} = "$url/$hdr{location}";
585	}	868	} else {
		869	$_[0]->on_eof (undef);
586		870
587	my $redirect;
588
589	if ($recurse) {	871	if ($len) {
590	my $status = $hdr{Status};	872	$_[0]->on_read (sub {
591		873	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
592	# industry standard is to redirect POST as GET for	874	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	$redirect = 1;	875	});
601	} elsif ($status == 307) {	876	} else {
		877	$_[0]->on_error (sub {
		878	($! == Errno::EPIPE \|\| !$!)
		879	? $finish->(delete $_[0]{rbuf})
		880	: $finish->(undef, $ae_error => $_[2]);
602	$redirect = 1;	881	});
		882	$_[0]->on_read (sub { });
603	}	883	}
604	}	884	}
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	});	885	}
739	};	886	};
740		887
		888	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		889	};
		890
741	# now handle proxy-CONNECT method	891	# now handle proxy-CONNECT method
742	if ($proxy && $uscheme eq "https") {	892	if ($proxy && $uscheme eq "https") {
743	# oh dear, we have to wrap it into a connect request	893	# oh dear, we have to wrap it into a connect request
744		894
745	# maybe re-use $uauthority with patched port?	895	# 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");	896	$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 {	897	$state{handle}->push_read (line => $qr_nlnl, sub {
748	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	898	$_[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 }));	899	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
750		900
751	if ($2 == 200) {	901	if ($2 == 200) {
752	$rpath = $upath;	902	$rpath = $upath;
753	&$handle_actual_request;	903	&$handle_actual_request;
754	} else {	904	} else {
755	%state = ();	905	%state = ();
756	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	906	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
757	}
758	});	907	}
		908	});
759	} else {	909	} else {
760	&$handle_actual_request;	910	&$handle_actual_request;
761	}
762
763	},	911	}
764	$arg{on_prepare} \|\| sub { $timeout }
765	);	912	};
		913
		914	my $tcp_connect = $arg{tcp_connect}
		915	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		916
		917	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		918
766	};	919	};
767		920
768	defined wantarray && AnyEvent::Util::guard { %state = () }	921	defined wantarray && AnyEvent::Util::guard { %state = () }
769	}	922	}
770		923
…		…
805	string of the form C<http://host:port> (optionally C<https:...>), croaks	958	string of the form C<http://host:port> (optionally C<https:...>), croaks
806	otherwise.	959	otherwise.
807		960
808	To clear an already-set proxy, use C<undef>.	961	To clear an already-set proxy, use C<undef>.
809		962
		963	=item $date = AnyEvent::HTTP::format_date $timestamp
		964
		965	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		966	Date (RFC 2616).
		967
		968	=item $timestamp = AnyEvent::HTTP::parse_date $date
		969
		970	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) or a
		971	bunch of minor variations of those, and returns the corresponding POSIX
		972	timestamp, or C<undef> if the date cannot be parsed.
		973
810	=item $AnyEvent::HTTP::MAX_RECURSE	974	=item $AnyEvent::HTTP::MAX_RECURSE
811		975
812	The default value for the C<recurse> request parameter (default: C<10>).	976	The default value for the C<recurse> request parameter (default: C<10>).
813		977
814	=item $AnyEvent::HTTP::USERAGENT	978	=item $AnyEvent::HTTP::USERAGENT
…		…
832	connections. This number of can be useful for load-leveling.	996	connections. This number of can be useful for load-leveling.
833		997
834	=back	998	=back
835		999
836	=cut	1000	=cut
		1001
		1002	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		1003	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		1004
		1005	sub format_date($) {
		1006	my ($time) = @_;
		1007
		1008	# RFC 822/1123 format
		1009	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		1010
		1011	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		1012	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		1013	$H, $M, $S;
		1014	}
		1015
		1016	sub parse_date($) {
		1017	my ($date) = @_;
		1018
		1019	my ($d, $m, $y, $H, $M, $S);
		1020
		1021	if ($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$/) {
		1022	# RFC 822/1123, required by RFC 2616 (with " ")
		1023	# cookie dates (with "-")
		1024
		1025	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1026
		1027	} elsif ($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]?) GMT$/) {
		1028	# RFC 850
		1029	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1030
		1031	} elsif ($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])$/) {
		1032	# ISO C's asctime
		1033	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1034	}
		1035	# other formats fail in the loop below
		1036
		1037	for (0..11) {
		1038	if ($m eq $month[$_]) {
		1039	require Time::Local;
		1040	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1041	}
		1042	}
		1043
		1044	undef
		1045	}
837		1046
838	sub set_proxy($) {	1047	sub set_proxy($) {
839	if (length $_[0]) {	1048	if (length $_[0]) {
840	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1049	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
841	or Carp::croak "$_[0]: invalid proxy URL";	1050	or Carp::croak "$_[0]: invalid proxy URL";
…		…
848	# initialise proxy from environment	1057	# initialise proxy from environment
849	eval {	1058	eval {
850	set_proxy $ENV{http_proxy};	1059	set_proxy $ENV{http_proxy};
851	};	1060	};
852		1061
		1062	=head2 SOCKS PROXIES
		1063
		1064	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1065	compile your perl to support socks, or use an external program such as
		1066	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1067	transparently.
		1068
		1069	Alternatively, for AnyEvent::HTTP only, you can use your own
		1070	C<tcp_connect> function that does the proxy handshake - here is an example
		1071	that works with socks4a proxies:
		1072
		1073	use Errno;
		1074	use AnyEvent::Util;
		1075	use AnyEvent::Socket;
		1076	use AnyEvent::Handle;
		1077
		1078	# host, port and username of/for your socks4a proxy
		1079	my $socks_host = "10.0.0.23";
		1080	my $socks_port = 9050;
		1081	my $socks_user = "";
		1082
		1083	sub socks4a_connect {
		1084	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1085
		1086	my $hdl = new AnyEvent::Handle
		1087	connect => [$socks_host, $socks_port],
		1088	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1089	on_error => sub { $connect_cb->() },
		1090	;
		1091
		1092	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1093
		1094	$hdl->push_read (chunk => 8, sub {
		1095	my ($hdl, $chunk) = @_;
		1096	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1097
		1098	if ($status == 0x5a) {
		1099	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1100	} else {
		1101	$! = Errno::ENXIO; $connect_cb->();
		1102	}
		1103	});
		1104
		1105	$hdl
		1106	}
		1107
		1108	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1109	possibly after switching off other proxy types:
		1110
		1111	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1112
		1113	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1114	my ($data, $headers) = @_;
		1115	...
		1116	};
		1117
853	=head1 SEE ALSO	1118	=head1 SEE ALSO
854		1119
855	L<AnyEvent>.	1120	L<AnyEvent>.
856		1121
857	=head1 AUTHOR	1122	=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 1.79 by root, Sat Jan 1 20:01:07 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 1.79 by root, Sat Jan 1 20:01:07 2011 UTC