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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC vs.
Revision 1.74 by root, Fri Dec 31 22:40:54 2010 UTC

…		…
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 5.0 ();	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 = '1.45';	52	our $VERSION = '1.5';
54		53
55	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
56		55
57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
…		…
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 body data as first argument	98	The callback will be called with the response body data as first argument
100	(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
101	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" (uppercase to avoid clashing with possible	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
105	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the	104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
106	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>.
107		109
108	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
109	the requested URL when following redirects - for example, you might get	111	the requested URL when following redirects - for example, you might get
110	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
111	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
…		…
148	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
149	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
150		152
151	=item headers => hashref	153	=item headers => hashref
152		154
153	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
154	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
155	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be	157	will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:>
156	suppressed by using C<undef> for these headers in which case they won't be	158	(this can be suppressed by using C<undef> for these headers in which case
157	sent at all).	159	they won't be sent at all).
158		160
159	=item timeout => $seconds	161	=item timeout => $seconds
160		162
161	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
162	the timeout, as will read or write activity, i.e. this is not an overall	164	the timeout, as will read or write activity, i.e. this is not an overall
…		…
172	C<$scheme> must be either missing, C<http> for HTTP or C<https> for	174	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
173	HTTPS.	175	HTTPS.
174		176
175	=item body => $string	177	=item body => $string
176		178
177	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
178	this module might offer more options).	180	this module might offer more options).
179		181
180	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
181		183
182	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
183	based on the original netscape specification.	185	based on the original netscape specification.
184		186
185	The C<$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
186	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
187	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
188	recommended, as expiry times are currently being ignored.	190	recommended, as session-only cookies might survive longer than expected.
189		191
190	Note that this cookie implementation is not of very high quality, nor	192	Note that this cookie implementation is not meant to be complete. If
191	meant to be complete. If you want complete cookie management you have to	193	you want complete cookie management you have to do that on your
192	do that on your own. C<cookie_jar> is meant as a quick fix to get some	194	own. C<cookie_jar> is meant as a quick fix to get some cookie-using sites
193	cookie-using sites working. Cookies are a privacy disaster, do not use	195	working. Cookies are a privacy disaster, do not use them unless required
194	them unless required to.	196	to.
		197
		198	When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:>
		199	headers will be set and handled by this module, otherwise they will be
		200	left untouched.
195		201
196	=item tls_ctx => $scheme \| $tls_ctx	202	=item tls_ctx => $scheme \| $tls_ctx
197		203
198	Specifies the AnyEvent::TLS context to be used for https connections. This	204	Specifies the AnyEvent::TLS context to be used for https connections. This
199	parameter follows the same rules as the C<tls_ctx> parameter to	205	parameter follows the same rules as the C<tls_ctx> parameter to
…		…
212	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>	218	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
213	and behaves exactly the same way (e.g. it has to provide a	219	and behaves exactly the same way (e.g. it has to provide a
214	timeout). See the description for the C<$prepare_cb> argument of	220	timeout). See the description for the C<$prepare_cb> argument of
215	C<AnyEvent::Socket::tcp_connect> for details.	221	C<AnyEvent::Socket::tcp_connect> for details.
216		222
		223	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		224
		225	In even rarer cases you want total control over how AnyEvent::HTTP
		226	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		227	to do this, but you can provide your own C<tcp_connect> function -
		228	obviously, it has to follow the same calling conventions, except that it
		229	may always return a connection guard object.
		230
		231	There are probably lots of weird uses for this function, starting from
		232	tracing the hosts C<http_request> actually tries to connect, to (inexact
		233	but fast) host => IP address caching or even socks protocol support.
		234
217	=item on_header => $callback->($headers)	235	=item on_header => $callback->($headers)
218		236
219	When specified, this callback will be called with the header hash as soon	237	When specified, this callback will be called with the header hash as soon
220	as headers have been successfully received from the remote server (not on	238	as headers have been successfully received from the remote server (not on
221	locally-generated errors).	239	locally-generated errors).
…		…
226		244
227	This callback is useful, among other things, to quickly reject unwanted	245	This callback is useful, among other things, to quickly reject unwanted
228	content, which, if it is supposed to be rare, can be faster than first	246	content, which, if it is supposed to be rare, can be faster than first
229	doing a C<HEAD> request.	247	doing a C<HEAD> request.
230		248
		249	The downside is that cancelling the request makes it impossible to re-use
		250	the connection. Also, the C<on_header> callback will not receive any
		251	trailer (headers sent after the response body).
		252
231	Example: cancel the request unless the content-type is "text/html".	253	Example: cancel the request unless the content-type is "text/html".
232		254
233	on_header => sub {	255	on_header => sub {
234	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	256	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
235	},	257	},
…		…
241	string instead of the body data.	263	string instead of the body data.
242		264
243	It has to return either true (in which case AnyEvent::HTTP will continue),	265	It has to return either true (in which case AnyEvent::HTTP will continue),
244	or false, in which case AnyEvent::HTTP will cancel the download (and call	266	or false, in which case AnyEvent::HTTP will cancel the download (and call
245	the completion callback with an error code of C<598>).	267	the completion callback with an error code of C<598>).
		268
		269	The downside to cancelling the request is that it makes it impossible to
		270	re-use the connection.
246		271
247	This callback is useful when the data is too large to be held in memory	272	This callback is useful when the data is too large to be held in memory
248	(so the callback writes it to a file) or when only some information should	273	(so the callback writes it to a file) or when only some information should
249	be extracted, or when the body should be processed incrementally.	274	be extracted, or when the body should be processed incrementally.
250		275
…		…
276	If you think you need this, first have a look at C<on_body>, to see if	301	If you think you need this, first have a look at C<on_body>, to see if
277	that doesn't solve your problem in a better way.	302	that doesn't solve your problem in a better way.
278		303
279	=back	304	=back
280		305
281	Example: make a simple HTTP GET request for http://www.nethype.de/	306	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		307	the response body.
282		308
283	http_request GET => "http://www.nethype.de/", sub {	309	http_request GET => "http://www.nethype.de/", sub {
284	my ($body, $hdr) = @_;	310	my ($body, $hdr) = @_;
285	print "$body\n";	311	print "$body\n";
286	};	312	};
287		313
288	Example: make a HTTP HEAD request on https://www.google.com/, use a	314	Example: do a HTTP HEAD request on https://www.google.com/, use a
289	timeout of 30 seconds.	315	timeout of 30 seconds.
290		316
291	http_request	317	http_request
292	GET => "https://www.google.com",	318	GET => "https://www.google.com",
293	timeout => 30,	319	timeout => 30,
…		…
296	use Data::Dumper;	322	use Data::Dumper;
297	print Dumper $hdr;	323	print Dumper $hdr;
298	}	324	}
299	;	325	;
300		326
301	Example: make another simple HTTP GET request, but immediately try to	327	Example: do another simple HTTP GET request, but immediately try to
302	cancel it.	328	cancel it.
303		329
304	my $request = http_request GET => "http://www.nethype.de/", sub {	330	my $request = http_request GET => "http://www.nethype.de/", sub {
305	my ($body, $hdr) = @_;	331	my ($body, $hdr) = @_;
306	print "$body\n";	332	print "$body\n";
…		…
338	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	364	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
339		365
340	_slot_schedule $_[0];	366	_slot_schedule $_[0];
341	}	367	}
342		368
343	our $qr_nl = qr{\015?\012};	369	# extract cookies from jar
		370	sub cookie_jar_extract($$$$) {
		371	my ($jar, $uscheme, $uhost, $upath) = @_;
		372
		373	%$jar = () if $jar->{version} != 1;
		374
		375	my @cookies;
		376
		377	while (my ($chost, $paths) = each %$jar) {
		378	next unless ref $paths;
		379
		380	if ($chost =~ /^\./) {
		381	next unless $chost eq substr $uhost, -length $chost;
		382	} elsif ($chost =~ /\./) {
		383	next unless $chost eq $uhost;
		384	} else {
		385	next;
		386	}
		387
		388	while (my ($cpath, $cookies) = each %$paths) {
		389	next unless $cpath eq substr $upath, 0, length $cpath;
		390
		391	while (my ($cookie, $kv) = each %$cookies) {
		392	next if $uscheme ne "https" && exists $kv->{secure};
		393
		394	if (exists $kv->{expires}) {
		395	if (AE::now > parse_date ($kv->{expires})) {
		396	delete $cookies->{$cookie};
		397	next;
		398	}
		399	}
		400
		401	my $value = $kv->{value};
		402
		403	if ($value =~ /[=;,[:space:]]/) {
		404	$value =~ s/([\\"])/\\$1/g;
		405	$value = "\"$value\"";
		406	}
		407
		408	push @cookies, "$cookie=$value";
		409	}
		410	}
		411	}
		412
		413	\@cookies
		414	}
		415
		416	# parse set_cookie header into jar
		417	sub cookie_jar_set_cookie($$$) {
		418	my ($jar, $set_cookie, $uhost) = @_;
		419
		420	for ($set_cookie) {
		421	# parse NAME=VALUE
		422	my @kv;
		423
		424	while (
		425	m{
		426	\G\s*
		427	(?:
		428	expires \s=\s ([A-Z][a-z][a-z],\ [^,;]+)
		429	\| ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )
		430	)
		431	}gcxsi
		432	) {
		433	my $name = $2;
		434	my $value = $4;
		435
		436	unless (defined $name) {
		437	# expires
		438	$name = "expires";
		439	$value = $1;
		440	} elsif (!defined $value) {
		441	# quoted
		442	$value = $3;
		443	$value =~ s/\\(.)/$1/gs;
		444	}
		445
		446	push @kv, lc $name, $value;
		447
		448	last unless /\G\s*;/gc;
		449	}
		450
		451	last unless @kv;
		452
		453	my $name = shift @kv;
		454	my %kv = (value => shift @kv, @kv);
		455
		456	$kv{expires} \|\|= format_date (AE::now + $kv{"max-age"})
		457	if exists $kv{"max-age"};
		458
		459	my $cdom;
		460	my $cpath = (delete $kv{path}) \|\| "/";
		461
		462	if (exists $kv{domain}) {
		463	$cdom = delete $kv{domain};
		464
		465	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		466
		467	next if $cdom =~ /\.$/;
		468
		469	# this is not rfc-like and not netscape-like. go figure.
		470	my $ndots = $cdom =~ y/.//;
		471	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		472	} else {
		473	$cdom = $uhost;
		474	}
		475
		476	# store it
		477	$jar->{version} = 1;
		478	$jar->{$cdom}{$cpath}{$name} = \%kv;
		479
		480	redo if /\G\s*,/gc;
		481	}
		482	}
		483
		484	# continue to parse $_ for headers and place them into the arg
		485	sub parse_hdr() {
		486	my %hdr;
		487
		488	# things seen, not parsed:
		489	# p3pP="NON CUR OTPi OUR NOR UNI"
		490
		491	$hdr{lc $1} .= ",$2"
		492	while /\G
		493	([^:\000-\037]*):
		494	[\011\040]*
		495	((?: [^\012]+ \| \012[\011\040] )*)
		496	\012
		497	/gxc;
		498
		499	/\G$/
		500	or return;
		501
		502	# remove the "," prefix we added to all headers above
		503	substr $_, 0, 1, ""
		504	for values %hdr;
		505
		506	\%hdr
		507	}
		508
344	our $qr_nlnl = qr{(?<![^\012])\015?\012};	509	our $qr_nlnl = qr{(?<![^\012])\015?\012};
345		510
346	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	511	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
347	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	512	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
348		513
…		…
367	my @pseudo = (URL => $url);	532	my @pseudo = (URL => $url);
368	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	533	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
369		534
370	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	535	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
371		536
372	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	537	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
373	if $recurse < 0;	538	if $recurse < 0;
374		539
375	my $proxy = $arg{proxy} \|\| $PROXY;	540	my $proxy = $arg{proxy} \|\| $PROXY;
376	my $timeout = $arg{timeout} \|\| $TIMEOUT;	541	my $timeout = $arg{timeout} \|\| $TIMEOUT;
377		542
378	my ($uscheme, $uauthority, $upath, $query, $fragment) =	543	my ($uscheme, $uauthority, $upath, $query, $fragment) =
379	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	544	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
380		545
381	$uscheme = lc $uscheme;	546	$uscheme = lc $uscheme;
382		547
383	my $uport = $uscheme eq "http" ? 80	548	my $uport = $uscheme eq "http" ? 80
384	: $uscheme eq "https" ? 443	549	: $uscheme eq "https" ? 443
385	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	550	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
386		551
387	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	552	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
388	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	553	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
389		554
390	my $uhost = $1;	555	my $uhost = $1;
391	$uport = $2 if defined $2;	556	$uport = $2 if defined $2;
392		557
393	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	558	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
394	unless exists $hdr{host};	559	unless exists $hdr{host};
395		560
396	$uhost =~ s/^\[(.*)\]$/$1/;	561	$uhost =~ s/^\[(.*)\]$/$1/;
397	$upath .= "?$query" if length $query;	562	$upath .= $query if length $query;
398		563
399	$upath =~ s%^/?%/%;	564	$upath =~ s%^/?%/%;
400		565
401	# cookie processing	566	# cookie processing
402	if (my $jar = $arg{cookie_jar}) {	567	if (my $jar = $arg{cookie_jar}) {
403	%$jar = () if $jar->{version} != 1;	568	my $cookies = cookie_jar_extract $jar, $uscheme, $uhost, $upath;
404		569
405	my @cookie;
406
407	while (my ($chost, $v) = each %$jar) {
408	if ($chost =~ /^\./) {
409	next unless $chost eq substr $uhost, -length $chost;
410	} elsif ($chost =~ /\./) {
411	next unless $chost eq $uhost;
412	} else {
413	next;
414	}
415
416	while (my ($cpath, $v) = each %$v) {
417	next unless $cpath eq substr $upath, 0, length $cpath;
418
419	while (my ($k, $v) = each %$v) {
420	next if $uscheme ne "https" && exists $v->{secure};
421	my $value = $v->{value};
422	$value =~ s/([\\"])/\\$1/g;
423	push @cookie, "$k=\"$value\"";
424	}
425	}
426	}
427
428	$hdr{cookie} = join "; ", @cookie	570	$hdr{cookie} = join "; ", @$cookies
429	if @cookie;	571	if @$cookies;
430	}	572	}
431		573
432	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	574	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
433		575
434	if ($proxy) {	576	if ($proxy) {
…		…
442	} else {	584	} else {
443	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	585	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
444	}	586	}
445		587
446	# leave out fragment and query string, just a heuristic	588	# leave out fragment and query string, just a heuristic
447	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	589	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
448	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	590	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
449		591
450	$hdr{"content-length"} = length $arg{body}	592	$hdr{"content-length"} = length $arg{body}
451	if length $arg{body} \|\| $method ne "GET";	593	if length $arg{body} \|\| $method ne "GET";
452		594
		595	$hdr{connection} = "close TE"; #1.1
		596	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		597
453	my %state = (connect_guard => 1);	598	my %state = (connect_guard => 1);
454		599
455	_get_slot $uhost, sub {	600	_get_slot $uhost, sub {
456	$state{slot_guard} = shift;	601	$state{slot_guard} = shift;
457		602
458	return unless $state{connect_guard};	603	return unless $state{connect_guard};
459		604
460	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	605	my $connect_cb = sub {
461	$state{fh} = shift	606	$state{fh} = shift
462	or do {	607	or do {
463	my $err = "$!";	608	my $err = "$!";
464	%state = ();	609	%state = ();
465	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	610	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
466	};	611	};
467		612
468	pop; # free memory, save a tree	613	pop; # free memory, save a tree
469		614
470	return unless delete $state{connect_guard};	615	return unless delete $state{connect_guard};
471		616
472	# get handle	617	# get handle
473	$state{handle} = new AnyEvent::Handle	618	$state{handle} = new AnyEvent::Handle
474	fh => $state{fh},	619	fh => $state{fh},
		620	peername => $rhost,
		621	tls_ctx => $arg{tls_ctx},
		622	# these need to be reconfigured on keepalive handles
475	timeout => $timeout,	623	timeout => $timeout,
476	peername => $rhost,	624	on_error => sub {
477	tls_ctx => $arg{tls_ctx};	625	%state = ();
		626	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		627	},
		628	on_eof => sub {
		629	%state = ();
		630	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		631	},
		632	;
478		633
479	# limit the number of persistent connections	634	# limit the number of persistent connections
480	# keepalive not yet supported	635	# keepalive not yet supported
481	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	636	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
482	++$KA_COUNT{$_[1]};	637	# ++$KA_COUNT{$_[1]};
483	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	638	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
484	--$KA_COUNT{$_[1]}	639	# --$KA_COUNT{$_[1]}
485	};	640	# };
486	$hdr{connection} = "keep-alive";	641	# $hdr{connection} = "keep-alive";
487	} else {
488	delete $hdr{connection};
489	}	642	# }
490
491	# (re-)configure handle
492	$state{handle}->on_error (sub {
493	%state = ();
494	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });
495	});
496	$state{handle}->on_eof (sub {
497	%state = ();
498	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });
499	});
500		643
501	$state{handle}->starttls ("connect") if $rscheme eq "https";	644	$state{handle}->starttls ("connect") if $rscheme eq "https";
502		645
503	# handle actual, non-tunneled, request	646	# handle actual, non-tunneled, request
504	my $handle_actual_request = sub {	647	my $handle_actual_request = sub {
505	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	648	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
506		649
507	# send request	650	# send request
508	$state{handle}->push_write (	651	$state{handle}->push_write (
509	"$method $rpath HTTP/1.0\015\012"	652	"$method $rpath HTTP/1.1\015\012"
510	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	653	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
511	. "\015\012"	654	. "\015\012"
512	. (delete $arg{body})	655	. (delete $arg{body})
513	);	656	);
514		657
515	# return if error occured during push_write()	658	# return if error occured during push_write()
516	return unless %state;	659	return unless %state;
517		660
518	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	661	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
519		662
520	# status line	663	# status line and headers
521	$state{handle}->push_read (line => $qr_nl, sub {	664	$state{read_response} = sub {
522	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
523	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", @pseudo }));
524
525	push @pseudo,
526	HTTPVersion => $1,
527	Status => $2,
528	Reason => $3,
529	;
530
531	# headers, could be optimized a bit
532	$state{handle}->unshift_read (line => $qr_nlnl, sub {
533	for ("$_[1]") {	665	for ("$_[1]") {
534	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	666	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
535		667
536	# things seen, not parsed:	668	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
537	# p3pP="NON CUR OTPi OUR NOR UNI"	669	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
538		670
539	$hdr{lc $1} .= ",$2"	671	# 100 Continue handling
540	while /\G	672	# should not happen as we don't send expect: 100-continue,
541	([^:\000-\037]*):	673	# but we handle it just in case.
542	[\011\040]*	674	# since we send the request body regardless, if we get an error
543	((?: [^\012]+ \| \012[\011\040] )*)	675	# we are out of-sync, which we currently do NOT handle correctly.
544	\012	676	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
545	/gxc;	677	if $2 eq 100;
546		678
		679	push @pseudo,
		680	HTTPVersion => $1,
		681	Status => $2,
		682	Reason => $3,
547	/\G$/	683	;
		684
		685	my $hdr = parse_hdr
548	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));	686	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		687
		688	%hdr = (%$hdr, @pseudo);
		689	}
		690
		691	# redirect handling
		692	# microsoft and other shitheads don't give a shit for following standards,
		693	# try to support some common forms of broken Location headers.
		694	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		695	$hdr{location} =~ s/^\.\/+//;
		696
		697	my $url = "$rscheme://$uhost:$uport";
		698
		699	unless ($hdr{location} =~ s/^\///) {
		700	$url .= $upath;
		701	$url =~ s/\/[^\/]*$//;
549	}	702	}
550		703
551	# remove the "," prefix we added to all headers above	704	$hdr{location} = "$url/$hdr{location}";
552	substr $_, 0, 1, ""	705	}
553	for values %hdr;
554		706
555	# patch in all pseudo headers	707	my $redirect;
556	%hdr = (%hdr, @pseudo);
557		708
		709	if ($recurse) {
		710	my $status = $hdr{Status};
		711
		712	# industry standard is to redirect POST as GET for
		713	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		714	# also, the UA should ask the user for 301 and 307 and POST,
		715	# industry standard seems to be to simply follow.
		716	# we go with the industry standard.
		717	if ($status == 301 or $status == 302 or $status == 303) {
		718	# HTTP/1.1 is unclear on how to mutate the method
		719	$method = "GET" unless $method eq "HEAD";
558	# redirect handling	720	$redirect = 1;
559	# microsoft and other shitheads don't give a shit for following standards,	721	} elsif ($status == 307) {
560	# try to support some common forms of broken Location headers.	722	$redirect = 1;
561	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	723	}
562	$hdr{location} =~ s/^\.\/+//;	724	}
563		725
564	my $url = "$rscheme://$uhost:$uport";	726	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		727	my $may_keep_alive = $_[3];
565		728
566	unless ($hdr{location} =~ s/^\///) {	729	$state{handle}->destroy if $state{handle};
		730	%state = ();
		731
		732	if (defined $_[1]) {
		733	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		734	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		735	}
		736
		737	# set-cookie processing
		738	if ($arg{cookie_jar}) {
		739	cookie_jar_set_cookie $arg{cookie_jar}, $hdr{"set-cookie"}, $uhost;
		740	}
		741
		742	if ($redirect && exists $hdr{location}) {
		743	# we ignore any errors, as it is very common to receive
		744	# Content-Length != 0 but no actual body
		745	# we also access %hdr, as $_[1] might be an erro
		746	http_request (
		747	$method => $hdr{location},
		748	%arg,
		749	recurse => $recurse - 1,
		750	Redirect => [$_[0], \%hdr],
		751	$cb);
		752	} else {
		753	$cb->($_[0], \%hdr);
		754	}
		755	};
		756
		757	my $len = $hdr{"content-length"};
		758
		759	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		760	$finish->(undef, 598 => "Request cancelled by on_header");
		761	} elsif (
		762	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		763	or $method eq "HEAD"
		764	or (defined $len && !$len)
		765	) {
		766	# no body
		767	$finish->("", undef, undef, 1);
		768	} else {
		769	# body handling, many different code paths
		770	# - no body expected
		771	# - want_body_handle
		772	# - te chunked
		773	# - 2x length known (with or without on_body)
		774	# - 2x length not known (with or without on_body)
		775	if (!$redirect && $arg{want_body_handle}) {
		776	$_[0]->on_eof (undef);
		777	$_[0]->on_error (undef);
		778	$_[0]->on_read (undef);
		779
		780	$finish->(delete $state{handle});
		781
		782	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		783	my $cl = 0;
		784	my $body = undef;
		785	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		786
		787	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		788
		789	my $read_chunk; $read_chunk = sub {
		790	$_[1] =~ /^([0-9a-fA-F]+)/
		791	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		792
		793	my $len = hex $1;
		794
		795	if ($len) {
567	$url .= $upath;	796	$cl += $len;
568	$url =~ s/\/[^\/]*$//;	797
		798	$_[0]->push_read (chunk => $len, sub {
		799	$on_body->($_[1], \%hdr)
		800	or return $finish->(undef, 598 => "Request cancelled by on_body");
		801
		802	$_[0]->push_read (line => sub {
		803	length $_[1]
		804	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
		805	$_[0]->push_read (line => $read_chunk);
		806	});
		807	});
		808	} else {
		809	$hdr{"content-length"} \|\|= $cl;
		810
		811	$_[0]->push_read (line => $qr_nlnl, sub {
		812	if (length $_[1]) {
		813	for ("$_[1]") {
		814	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		815
		816	my $hdr = parse_hdr
		817	or return $finish->(undef, 599 => "Garbled response trailers");
		818
		819	%hdr = (%hdr, %$hdr);
		820	}
		821	}
		822
		823	$finish->($body, undef, undef, 1);
		824	});
		825	}
		826	};
		827
		828	$_[0]->push_read (line => $read_chunk);
		829
		830	} elsif ($arg{on_body}) {
		831	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		832
		833	if ($len) {
		834	$_[0]->on_read (sub {
		835	$len -= length $_[0]{rbuf};
		836
		837	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		838	or return $finish->(undef, 598 => "Request cancelled by on_body");
		839
		840	$len > 0
		841	or $finish->("", undef, undef, 1);
		842	});
		843	} else {
		844	$_[0]->on_eof (sub {
		845	$finish->("");
		846	});
		847	$_[0]->on_read (sub {
		848	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		849	or $finish->(undef, 598 => "Request cancelled by on_body");
		850	});
569	}	851	}
570
571	$hdr{location} = "$url/$hdr{location}";
572	}	852	} else {
		853	$_[0]->on_eof (undef);
573		854
574	my $redirect;
575
576	if ($recurse) {	855	if ($len) {
577	my $status = $hdr{Status};	856	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
578		857	$_[0]->on_read (sub {
579	if (($status == 301 \|\| $status == 302) && $method ne "POST") {	858	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
580	# apparently, mozilla et al. just change POST to GET here	859	if $len <= length $_[0]{rbuf};
581	# more research is needed before we do the same
582	$redirect = 1;	860	});
583	} elsif ($status == 303) {	861	} else {
584	# even http/1.1 is unclear on how to mutate the method	862	$_[0]->on_error (sub {
585	$method = "GET" unless $method eq "HEAD";	863	($! == Errno::EPIPE \|\| !$!)
		864	? $finish->(delete $_[0]{rbuf})
		865	: $finish->(undef, 599 => $_[2]);
586	$redirect = 1;	866	});
587	} elsif ($status == 307 && $method =~ /^(?:GET\|HEAD)$/) {	867	$_[0]->on_read (sub { });
588	$redirect = 1;
589	}	868	}
590	}	869	}
591
592	my $finish = sub {
593	$state{handle}->destroy if $state{handle};
594	%state = ();
595
596	# set-cookie processing
597	if ($arg{cookie_jar}) {
598	for ($_[1]{"set-cookie"}) {
599	# parse NAME=VALUE
600	my @kv;
601
602	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
603	my $name = $1;
604	my $value = $3;
605
606	unless ($value) {
607	$value = $2;
608	$value =~ s/\\(.)/$1/gs;
609	}
610
611	push @kv, $name => $value;
612
613	last unless /\G\s*;/gc;
614	}
615
616	last unless @kv;
617
618	my $name = shift @kv;
619	my %kv = (value => shift @kv, @kv);
620
621	my $cdom;
622	my $cpath = (delete $kv{path}) \|\| "/";
623
624	if (exists $kv{domain}) {
625	$cdom = delete $kv{domain};
626
627	$cdom =~ s/^\.?/./; # make sure it starts with a "."
628
629	next if $cdom =~ /\.$/;
630
631	# this is not rfc-like and not netscape-like. go figure.
632	my $ndots = $cdom =~ y/.//;
633	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
634	} else {
635	$cdom = $uhost;
636	}
637
638	# store it
639	$arg{cookie_jar}{version} = 1;
640	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
641
642	redo if /\G\s*,/gc;
643	}
644	}
645
646	if ($redirect && exists $hdr{location}) {
647	# we ignore any errors, as it is very common to receive
648	# Content-Length != 0 but no actual body
649	# we also access %hdr, as $_[1] might be an erro
650	http_request (
651	$method => $hdr{location},
652	%arg,
653	recurse => $recurse - 1,
654	Redirect => \@_,
655	$cb);
656	} else {
657	$cb->($_[0], $_[1]);
658	}
659	};
660
661	my $len = $hdr{"content-length"};
662
663	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
664	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
665	} elsif (
666	$hdr{Status} =~ /^(?:1..\|[23]04)$/
667	or $method eq "HEAD"
668	or (defined $len && !$len)
669	) {
670	# no body
671	$finish->("", \%hdr);
672	} else {
673	# body handling, four different code paths
674	# for want_body_handle, on_body (2x), normal (2x)
675	# we might read too much here, but it does not matter yet (no pers. connections)
676	if (!$redirect && $arg{want_body_handle}) {
677	$_[0]->on_eof (undef);
678	$_[0]->on_error (undef);
679	$_[0]->on_read (undef);
680
681	$finish->(delete $state{handle}, \%hdr);
682
683	} elsif ($arg{on_body}) {
684	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
685	if ($len) {
686	$_[0]->on_eof (undef);
687	$_[0]->on_read (sub {
688	$len -= length $_[0]{rbuf};
689
690	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
691	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
692
693	$len > 0
694	or $finish->("", \%hdr);
695	});
696	} else {
697	$_[0]->on_eof (sub {
698	$finish->("", \%hdr);
699	});
700	$_[0]->on_read (sub {
701	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
702	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
703	});
704	}
705	} else {
706	$_[0]->on_eof (undef);
707
708	if ($len) {
709	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
710	$_[0]->on_read (sub {
711	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
712	if $len <= length $_[0]{rbuf};
713	});
714	} else {
715	$_[0]->on_error (sub {
716	$! == Errno::EPIPE \|\| !$!
717	? $finish->(delete $_[0]{rbuf}, \%hdr)
718	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
719	});
720	$_[0]->on_read (sub { });
721	}
722	}
723	}
724	});	870	}
725	});	871	};
		872
		873	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
726	};	874	};
727		875
728	# now handle proxy-CONNECT method	876	# now handle proxy-CONNECT method
729	if ($proxy && $uscheme eq "https") {	877	if ($proxy && $uscheme eq "https") {
730	# oh dear, we have to wrap it into a connect request	878	# oh dear, we have to wrap it into a connect request
731		879
732	# maybe re-use $uauthority with patched port?	880	# maybe re-use $uauthority with patched port?
733	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	881	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
734	$state{handle}->push_read (line => $qr_nlnl, sub {	882	$state{handle}->push_read (line => $qr_nlnl, sub {
735	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	883	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
736	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));	884	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
737		885
738	if ($2 == 200) {	886	if ($2 == 200) {
739	$rpath = $upath;	887	$rpath = $upath;
740	&$handle_actual_request;	888	&$handle_actual_request;
741	} else {	889	} else {
742	%state = ();	890	%state = ();
743	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	891	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
744	}	892	}
745	});	893	});
746	} else {	894	} else {
747	&$handle_actual_request;	895	&$handle_actual_request;
748	}	896	}
		897	};
749		898
750	}, $arg{on_prepare} \|\| sub { $timeout };	899	my $tcp_connect = $arg{tcp_connect}
		900	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		901
		902	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		903
751	};	904	};
752		905
753	defined wantarray && AnyEvent::Util::guard { %state = () }	906	defined wantarray && AnyEvent::Util::guard { %state = () }
754	}	907	}
755		908
…		…
790	string of the form C<http://host:port> (optionally C<https:...>), croaks	943	string of the form C<http://host:port> (optionally C<https:...>), croaks
791	otherwise.	944	otherwise.
792		945
793	To clear an already-set proxy, use C<undef>.	946	To clear an already-set proxy, use C<undef>.
794		947
		948	=item $date = AnyEvent::HTTP::format_date $timestamp
		949
		950	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		951	Date (RFC 2616).
		952
		953	=item $timestamp = AnyEvent::HTTP::parse_date $date
		954
		955	Takes a HTTP Date (RFC 2616) or a Cookie date (netscape cookie spec) and
		956	returns the corresponding POSIX timestamp, or C<undef> if the date cannot
		957	be parsed.
		958
795	=item $AnyEvent::HTTP::MAX_RECURSE	959	=item $AnyEvent::HTTP::MAX_RECURSE
796		960
797	The default value for the C<recurse> request parameter (default: C<10>).	961	The default value for the C<recurse> request parameter (default: C<10>).
798		962
799	=item $AnyEvent::HTTP::USERAGENT	963	=item $AnyEvent::HTTP::USERAGENT
…		…
817	connections. This number of can be useful for load-leveling.	981	connections. This number of can be useful for load-leveling.
818		982
819	=back	983	=back
820		984
821	=cut	985	=cut
		986
		987	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		988	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		989
		990	sub format_date($) {
		991	my ($time) = @_;
		992
		993	# RFC 822/1123 format
		994	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		995
		996	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		997	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		998	$H, $M, $S;
		999	}
		1000
		1001	sub parse_date($) {
		1002	my ($date) = @_;
		1003
		1004	my ($d, $m, $y, $H, $M, $S);
		1005
		1006	if ($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$/) {
		1007	# RFC 822/1123, required by RFC 2616 (with " ")
		1008	# cookie dates (with "-")
		1009
		1010	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		1011
		1012	} elsif ($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$/) {
		1013	# RFC 850
		1014	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		1015
		1016	} elsif ($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])$/) {
		1017	# ISO C's asctime
		1018	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		1019	}
		1020	# other formats fail in the loop below
		1021
		1022	for (0..11) {
		1023	if ($m eq $month[$_]) {
		1024	require Time::Local;
		1025	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		1026	}
		1027	}
		1028
		1029	undef
		1030	}
822		1031
823	sub set_proxy($) {	1032	sub set_proxy($) {
824	if (length $_[0]) {	1033	if (length $_[0]) {
825	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	1034	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
826	or Carp::croak "$_[0]: invalid proxy URL";	1035	or Carp::croak "$_[0]: invalid proxy URL";
…		…
833	# initialise proxy from environment	1042	# initialise proxy from environment
834	eval {	1043	eval {
835	set_proxy $ENV{http_proxy};	1044	set_proxy $ENV{http_proxy};
836	};	1045	};
837		1046
		1047	=head2 SOCKS PROXIES
		1048
		1049	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		1050	compile your perl to support socks, or use an external program such as
		1051	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		1052	transparently.
		1053
		1054	Alternatively, for AnyEvent::HTTP only, you can use your own
		1055	C<tcp_connect> function that does the proxy handshake - here is an example
		1056	that works with socks4a proxies:
		1057
		1058	use Errno;
		1059	use AnyEvent::Util;
		1060	use AnyEvent::Socket;
		1061	use AnyEvent::Handle;
		1062
		1063	# host, port and username of/for your socks4a proxy
		1064	my $socks_host = "10.0.0.23";
		1065	my $socks_port = 9050;
		1066	my $socks_user = "";
		1067
		1068	sub socks4a_connect {
		1069	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1070
		1071	my $hdl = new AnyEvent::Handle
		1072	connect => [$socks_host, $socks_port],
		1073	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1074	on_error => sub { $connect_cb->() },
		1075	;
		1076
		1077	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1078
		1079	$hdl->push_read (chunk => 8, sub {
		1080	my ($hdl, $chunk) = @_;
		1081	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1082
		1083	if ($status == 0x5a) {
		1084	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1085	} else {
		1086	$! = Errno::ENXIO; $connect_cb->();
		1087	}
		1088	});
		1089
		1090	$hdl
		1091	}
		1092
		1093	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1094	possibly after switching off other proxy types:
		1095
		1096	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1097
		1098	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1099	my ($data, $headers) = @_;
		1100	...
		1101	};
		1102
838	=head1 SEE ALSO	1103	=head1 SEE ALSO
839		1104
840	L<AnyEvent>.	1105	L<AnyEvent>.
841		1106
842	=head1 AUTHOR	1107	=head1 AUTHOR

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC vs. Revision 1.74 by root, Fri Dec 31 22:40:54 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC vs.
Revision 1.74 by root, Fri Dec 31 22:40:54 2010 UTC