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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.46 by root, Sat Jul 25 01:29:09 2009 UTC vs.
Revision 1.67 by root, Fri Dec 31 06:18:54 2010 UTC

…		…
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 4.8 ();	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 = '1.41';	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 as
101	second argument.	100	second argument.
102		101
103	All the headers in that hash are lowercased. In addition to the response	102	All the headers in that hash are lowercased. In addition to the response
104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	contain the three parts of the HTTP Status-Line of the same name. The	105	three parts of the HTTP Status-Line of the same name. If an error occurs
		106	during the body phase of a request, then the original C<Status> and
		107	C<Reason> values from the header are available as C<OrigStatus> and
		108	C<OrigReason>.
		109
106	pseudo-header C<URL> contains the original URL (which can differ from the	110	The pseudo-header C<URL> contains the actual URL (which can differ from
107	requested URL when following redirects).	111	the requested URL when following redirects - for example, you might get
		112	an error that your URL scheme is not supported even though your URL is a
		113	valid http URL because it redirected to an ftp URL, in which case you can
		114	look at the URL pseudo header).
		115
		116	The pseudo-header C<Redirect> only exists when the request was a result
		117	of an internal redirect. In that case it is an array reference with
		118	the C<($data, $headers)> from the redirect response. Note that this
		119	response could in turn be the result of a redirect itself, and C<<
		120	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		121	response, and so on.
108		122
109	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
110	joined together with a comma (C<,>), as per the HTTP spec.	124	joined together with a comma (C<,>), as per the HTTP spec.
111		125
112	If an internal error occurs, such as not being able to resolve a hostname,	126	If an internal error occurs, such as not being able to resolve a hostname,
…		…
138		152
139	=item headers => hashref	153	=item headers => hashref
140		154
141	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
142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	156	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
143	and will provide defaults for C<User-Agent:> and C<Referer:>.	157	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be
		158	suppressed by using C<undef> for these headers in which case they won't be
		159	sent at all).
144		160
145	=item timeout => $seconds	161	=item timeout => $seconds
146		162
147	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
148	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
149		168
150	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
151		170
152	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
153	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
154		173
155	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	174	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
156	HTTPS.	175	HTTPS.
157		176
158	=item body => $string	177	=item body => $string
159		178
160	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
…		…
185	verification, highest compatibility) and high-security (CA and common-name	204	verification, highest compatibility) and high-security (CA and common-name
186	verification) TLS context.	205	verification) TLS context.
187		206
188	The default for this option is C<low>, which could be interpreted as "give	207	The default for this option is C<low>, which could be interpreted as "give
189	me the page, no matter what".	208	me the page, no matter what".
		209
		210	=item on_prepare => $callback->($fh)
		211
		212	In rare cases you need to "tune" the socket before it is used to
		213	connect (for exmaple, to bind it on a given IP address). This parameter
		214	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		215	and behaves exactly the same way (e.g. it has to provide a
		216	timeout). See the description for the C<$prepare_cb> argument of
		217	C<AnyEvent::Socket::tcp_connect> for details.
		218
		219	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		220
		221	In even rarer cases you want total control over how AnyEvent::HTTP
		222	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		223	to do this, but you can provide your own C<tcp_connect> function -
		224	obviously, it has to follow the same calling conventions, except that it
		225	may always return a connection guard object.
		226
		227	There are probably lots of weird uses for this function, starting from
		228	tracing the hosts C<http_request> actually tries to connect, to (inexact
		229	but fast) host => IP address caching or even socks protocol support.
190		230
191	=item on_header => $callback->($headers)	231	=item on_header => $callback->($headers)
192		232
193	When specified, this callback will be called with the header hash as soon	233	When specified, this callback will be called with the header hash as soon
194	as headers have been successfully received from the remote server (not on	234	as headers have been successfully received from the remote server (not on
…		…
312	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	352	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
313		353
314	_slot_schedule $_[0];	354	_slot_schedule $_[0];
315	}	355	}
316		356
317	our $qr_nl = qr{\015?\012};	357	# continue to parse $_ for headers and place them into the arg
		358	sub parse_hdr() {
		359	my %hdr;
		360
		361	# things seen, not parsed:
		362	# p3pP="NON CUR OTPi OUR NOR UNI"
		363
		364	$hdr{lc $1} .= ",$2"
		365	while /\G
		366	([^:\000-\037]*):
		367	[\011\040]*
		368	((?: [^\012]+ \| \012[\011\040] )*)
		369	\012
		370	/gxc;
		371
		372	/\G$/
		373	or return;
		374
		375	# remove the "," prefix we added to all headers above
		376	substr $_, 0, 1, ""
		377	for values %hdr;
		378
		379	\%hdr
		380	}
		381
318	our $qr_nlnl = qr{(?<![^\012])\015?\012};	382	our $qr_nlnl = qr{(?<![^\012])\015?\012};
319		383
320	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	384	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
321	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	385	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
322		386
…		…
335	while (my ($k, $v) = each %$hdr) {	399	while (my ($k, $v) = each %$hdr) {
336	$hdr{lc $k} = $v;	400	$hdr{lc $k} = $v;
337	}	401	}
338	}	402	}
339		403
		404	# pseudo headers for all subsequent responses
		405	my @pseudo = (URL => $url);
		406	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		407
340	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	408	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
341		409
342	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	410	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
343	if $recurse < 0;	411	if $recurse < 0;
344		412
345	my $proxy = $arg{proxy} \|\| $PROXY;	413	my $proxy = $arg{proxy} \|\| $PROXY;
346	my $timeout = $arg{timeout} \|\| $TIMEOUT;	414	my $timeout = $arg{timeout} \|\| $TIMEOUT;
347		415
348	my ($uscheme, $uauthority, $upath, $query, $fragment) =	416	my ($uscheme, $uauthority, $upath, $query, $fragment) =
349	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	417	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
350		418
351	$uscheme = lc $uscheme;	419	$uscheme = lc $uscheme;
352		420
353	my $uport = $uscheme eq "http" ? 80	421	my $uport = $uscheme eq "http" ? 80
354	: $uscheme eq "https" ? 443	422	: $uscheme eq "https" ? 443
355	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });	423	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
356		424
357	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	425	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
358	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	426	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
359		427
360	my $uhost = $1;	428	my $uhost = $1;
361	$uport = $2 if defined $2;	429	$uport = $2 if defined $2;
362		430
363	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";	431	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		432	unless exists $hdr{host};
364		433
365	$uhost =~ s/^\[(.*)\]$/$1/;	434	$uhost =~ s/^\[(.*)\]$/$1/;
366	$upath .= "?$query" if length $query;	435	$upath .= $query if length $query;
367		436
368	$upath =~ s%^/?%/%;	437	$upath =~ s%^/?%/%;
369		438
370	# cookie processing	439	# cookie processing
371	if (my $jar = $arg{cookie_jar}) {	440	if (my $jar = $arg{cookie_jar}) {
…		…
401	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	470	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
402		471
403	if ($proxy) {	472	if ($proxy) {
404	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	473	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
405		474
		475	$rscheme = "http" unless defined $rscheme;
		476
406	# don't support https requests over https-proxy transport,	477	# don't support https requests over https-proxy transport,
407	# can't be done with tls as spec'ed, unless you double-encrypt.	478	# can't be done with tls as spec'ed, unless you double-encrypt.
408	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	479	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
409	} else {	480	} else {
410	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	481	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
411	}	482	}
412		483
413	$hdr{"user-agent"} \|\|= $USERAGENT;	484	# leave out fragment and query string, just a heuristic
414	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic	485	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		486	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
415		487
416	$hdr{"content-length"} = length $arg{body};	488	$hdr{"content-length"} = length $arg{body}
		489	if length $arg{body} \|\| $method ne "GET";
		490
		491	$hdr{connection} = "close TE";
		492	$hdr{te} = "trailers" unless exists $hdr{te};
417		493
418	my %state = (connect_guard => 1);	494	my %state = (connect_guard => 1);
419		495
420	_get_slot $uhost, sub {	496	_get_slot $uhost, sub {
421	$state{slot_guard} = shift;	497	$state{slot_guard} = shift;
422		498
423	return unless $state{connect_guard};	499	return unless $state{connect_guard};
424		500
425	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	501	my $connect_cb = sub {
426	$state{fh} = shift	502	$state{fh} = shift
427	or do {	503	or do {
428	my $err = "$!";	504	my $err = "$!";
429	%state = ();	505	%state = ();
430	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });	506	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
431	};	507	};
432		508
433	pop; # free memory, save a tree	509	pop; # free memory, save a tree
434		510
435	return unless delete $state{connect_guard};	511	return unless delete $state{connect_guard};
436		512
437	# get handle	513	# get handle
438	$state{handle} = new AnyEvent::Handle	514	$state{handle} = new AnyEvent::Handle
439	fh => $state{fh},	515	fh => $state{fh},
		516	peername => $rhost,
		517	tls_ctx => $arg{tls_ctx},
		518	# these need to be reconfigured on keepalive handles
440	timeout => $timeout,	519	timeout => $timeout,
441	peername => $rhost,	520	on_error => sub {
442	tls_ctx => $arg{tls_ctx};	521	%state = ();
		522	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		523	},
		524	on_eof => sub {
		525	%state = ();
		526	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		527	},
		528	;
443		529
444	# limit the number of persistent connections	530	# limit the number of persistent connections
445	# keepalive not yet supported	531	# keepalive not yet supported
446	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	532	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
447	++$KA_COUNT{$_[1]};	533	# ++$KA_COUNT{$_[1]};
448	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	534	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
449	--$KA_COUNT{$_[1]}	535	# --$KA_COUNT{$_[1]}
450	};	536	# };
451	$hdr{connection} = "keep-alive";	537	# $hdr{connection} = "keep-alive";
452	} else {	538	# } else {
453	delete $hdr{connection};	539	# delete $hdr{connection};
454	}	540	# }
455
456	# (re-)configure handle
457	$state{handle}->on_error (sub {
458	%state = ();
459	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
460	});
461	$state{handle}->on_eof (sub {
462	%state = ();
463	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
464	});
465		541
466	$state{handle}->starttls ("connect") if $rscheme eq "https";	542	$state{handle}->starttls ("connect") if $rscheme eq "https";
467		543
468	# handle actual, non-tunneled, request	544	# handle actual, non-tunneled, request
469	my $handle_actual_request = sub {	545	my $handle_actual_request = sub {
470	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	546	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
471		547
472	# send request	548	# send request
473	$state{handle}->push_write (	549	$state{handle}->push_write (
474	"$method $rpath HTTP/1.0\015\012"	550	"$method $rpath HTTP/1.1\015\012"
475	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	551	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
476	. "\015\012"	552	. "\015\012"
477	. (delete $arg{body})	553	. (delete $arg{body})
478	);	554	);
479		555
		556	# return if error occured during push_write()
		557	return unless %state;
		558
480	%hdr = (); # reduce memory usage, save a kitten	559	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
481		560
482	# status line	561	# status line and headers
483	$state{handle}->push_read (line => $qr_nl, sub {	562	$state{handle}->push_read (line => $qr_nlnl, sub {
484	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	563	my $keepalive = pop;
485	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
486		564
487	my %hdr = ( # response headers
488	HTTPVersion => ",$1",
489	Status => ",$2",
490	Reason => ",$3",
491	URL => ",$url"
492	);
493
494	# headers, could be optimized a bit
495	$state{handle}->unshift_read (line => $qr_nlnl, sub {
496	for ("$_[1]") {	565	for ("$_[1]") {
497	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	566	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
498		567
499	# things seen, not parsed:	568	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
500	# p3pP="NON CUR OTPi OUR NOR UNI"	569	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
501		570
502	$hdr{lc $1} .= ",$2"	571	push @pseudo,
503	while /\G	572	HTTPVersion => $1,
504	([^:\000-\037]*):	573	Status => $2,
505	[\011\040]*	574	Reason => $3,
506	((?: [^\012]+ \| \012[\011\040] )*)
507	\012
508	/gxc;
509
510	/\G$/	575	;
		576
		577	my $hdr = parse_hdr
511	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));	578	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		579
		580	%hdr = (%$hdr, @pseudo);
		581	}
		582
		583	# redirect handling
		584	# microsoft and other shitheads don't give a shit for following standards,
		585	# try to support some common forms of broken Location headers.
		586	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		587	$hdr{location} =~ s/^\.\/+//;
		588
		589	my $url = "$rscheme://$uhost:$uport";
		590
		591	unless ($hdr{location} =~ s/^\///) {
		592	$url .= $upath;
		593	$url =~ s/\/[^\/]*$//;
512	}	594	}
513		595
514	substr $_, 0, 1, ""
515	for values %hdr;
516
517	# redirect handling
518	# microsoft and other shitheads don't give a shit for following standards,
519	# try to support some common forms of broken Location headers.
520	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
521	$hdr{location} =~ s/^\.\/+//;
522
523	my $url = "$rscheme://$uhost:$uport";
524
525	unless ($hdr{location} =~ s/^\///) {
526	$url .= $upath;
527	$url =~ s/\/[^\/]*$//;
528	}
529
530	$hdr{location} = "$url/$hdr{location}";	596	$hdr{location} = "$url/$hdr{location}";
		597	}
		598
		599	my $redirect;
		600
		601	if ($recurse) {
		602	my $status = $hdr{Status};
		603
		604	# industry standard is to redirect POST as GET for
		605	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		606	# also, the UA should ask the user for 301 and 307 and POST,
		607	# industry standard seems to be to simply follow.
		608	# we go with the industry standard.
		609	if ($status == 301 or $status == 302 or $status == 303) {
		610	# HTTP/1.1 is unclear on how to mutate the method
		611	$method = "GET" unless $method eq "HEAD";
		612	$redirect = 1;
		613	} elsif ($status == 307) {
		614	$redirect = 1;
531	}	615	}
		616	}
532		617
533	my $redirect;	618	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		619	$state{handle}->destroy if $state{handle};
		620	%state = ();
534		621
		622	if (defined $_[1]) {
		623	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		624	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		625	}
		626
		627	# set-cookie processing
535	if ($recurse) {	628	if ($arg{cookie_jar}) {
536	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {	629	for ($hdr{"set-cookie"}) {
537	# apparently, mozilla et al. just change POST to GET here	630	# parse NAME=VALUE
538	# more research is needed before we do the same	631	my @kv;
		632
		633	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
539	$redirect = 1;	634	my $name = $1;
540	} elsif ($hdr{Status} == 303) {	635	my $value = $3;
541	# even http/1.1 is unclear on how to mutate the method	636
542	$method = "GET" unless $method eq "HEAD";	637	unless ($value) {
		638	$value = $2;
		639	$value =~ s/\\(.)/$1/gs;
		640	}
		641
		642	push @kv, $name => $value;
		643
		644	last unless /\G\s*;/gc;
		645	}
		646
		647	last unless @kv;
		648
		649	my $name = shift @kv;
		650	my %kv = (value => shift @kv, @kv);
		651
		652	my $cdom;
		653	my $cpath = (delete $kv{path}) \|\| "/";
		654
		655	if (exists $kv{domain}) {
		656	$cdom = delete $kv{domain};
		657
		658	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		659
		660	next if $cdom =~ /\.$/;
		661
		662	# this is not rfc-like and not netscape-like. go figure.
		663	my $ndots = $cdom =~ y/.//;
		664	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		665	} else {
		666	$cdom = $uhost;
		667	}
		668
543	$redirect = 1;	669	# store it
544	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {	670	$arg{cookie_jar}{version} = 1;
545	$redirect = 1;	671	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		672
		673	redo if /\G\s*,/gc;
546	}	674	}
547	}	675	}
548		676
549	my $finish = sub {	677	if ($redirect && exists $hdr{location}) {
550	$state{handle}->destroy if $state{handle};
551	%state = ();
552
553	# set-cookie processing
554	if ($arg{cookie_jar}) {
555	for ($_[1]{"set-cookie"}) {
556	# parse NAME=VALUE
557	my @kv;
558
559	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
560	my $name = $1;
561	my $value = $3;
562
563	unless ($value) {
564	$value = $2;
565	$value =~ s/\\(.)/$1/gs;
566	}
567
568	push @kv, $name => $value;
569
570	last unless /\G\s*;/gc;
571	}
572
573	last unless @kv;
574
575	my $name = shift @kv;
576	my %kv = (value => shift @kv, @kv);
577
578	my $cdom;
579	my $cpath = (delete $kv{path}) \|\| "/";
580
581	if (exists $kv{domain}) {
582	$cdom = delete $kv{domain};
583
584	$cdom =~ s/^\.?/./; # make sure it starts with a "."
585
586	next if $cdom =~ /\.$/;
587
588	# this is not rfc-like and not netscape-like. go figure.
589	my $ndots = $cdom =~ y/.//;
590	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
591	} else {
592	$cdom = $uhost;
593	}
594
595	# store it
596	$arg{cookie_jar}{version} = 1;
597	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
598
599	redo if /\G\s*,/gc;
600	}
601	}
602
603	if ($redirect) {
604	# we ignore any errors, as it is very common to receive	678	# we ignore any errors, as it is very common to receive
605	# Content-Length != 0 but no actual body	679	# Content-Length != 0 but no actual body
606	# we also access %hdr, as $_[1] might be an erro	680	# we also access %hdr, as $_[1] might be an erro
607	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);	681	http_request (
608	} else {	682	$method => $hdr{location},
609	$cb->($_[0], $_[1]);
610	}	683	%arg,
		684	recurse => $recurse - 1,
		685	Redirect => [$_[0], \%hdr],
611	};	686	$cb);
612
613	my $len = $hdr{"content-length"};
614
615	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
616	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
617	} elsif (
618	$hdr{Status} =~ /^(?:1..\|[23]04)$/
619	or $method eq "HEAD"
620	or (defined $len && !$len)
621	) {
622	# no body
623	$finish->("", \%hdr);
624	} else {	687	} else {
		688	$cb->($_[0], \%hdr);
		689	}
		690	};
		691
		692	my $len = $hdr{"content-length"};
		693
		694	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		695	$finish->(undef, 598 => "Request cancelled by on_header");
		696	} elsif (
		697	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		698	or $method eq "HEAD"
		699	or (defined $len && !$len)
		700	) {
		701	# no body
		702	$finish->("", undef, undef, 1);
		703	} else {
625	# body handling, four different code paths	704	# body handling, many different code paths
626	# for want_body_handle, on_body (2x), normal (2x)	705	# - no body expected
627	# we might read too much here, but it does not matter yet (no pers. connections)	706	# - want_body_handle
		707	# - te chunked
		708	# - 2x length known (with or without on_body)
		709	# - 2x length not known (with or without on_body)
628	if (!$redirect && $arg{want_body_handle}) {	710	if (!$redirect && $arg{want_body_handle}) {
629	$_[0]->on_eof (undef);	711	$_[0]->on_eof (undef);
630	$_[0]->on_error (undef);	712	$_[0]->on_error (undef);
631	$_[0]->on_read (undef);	713	$_[0]->on_read (undef);
632		714
633	$finish->(delete $state{handle}, \%hdr);	715	$finish->(delete $state{handle});
634		716
635	} elsif ($arg{on_body}) {	717	} elsif ($hdr{"transfer-encoding"} =~ /chunked/) {
		718	my $body = undef;
		719	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		720
636	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });	721	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		722
		723	my $read_chunk; $read_chunk = sub {
		724	$_[1] =~ /^([0-9a-fA-F]+)/
		725	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		726
		727	my $len = hex $1;
		728
637	if ($len) {	729	if ($len) {
638	$_[0]->on_eof (undef);	730	$_[0]->push_read (chunk => hex $1, sub {
		731	$on_body->($_[1], \%hdr)
		732	or return $finish->(undef, 598 => "Request cancelled by on_body");
		733
639	$_[0]->on_read (sub {	734	$_[0]->push_read (line => sub {
640	$len -= length $_[0]{rbuf};	735	length $_[1]
641		736	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
642	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	737	$_[0]->push_read (line => $read_chunk);
643	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
644
645	$len > 0	738	});
646	or $finish->("", \%hdr);
647	});	739	});
648	} else {	740	} else {
649	$_[0]->on_eof (sub {	741	$_[0]->push_read (line => $qr_nlnl, sub {
650	$finish->("", \%hdr);	742	if (length $_[1]) {
		743	for ("$_[1]") {
		744	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		745
		746	my $hdr = parse_hdr
		747	or return $finish->(undef, 599 => "Garbled response trailers");
		748
		749	%hdr = (%hdr, %$hdr);
		750	}
651	});	751	}
652	$_[0]->on_read (sub {	752
653	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	753	$finish->($body, undef, undef, 1);
654	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
655	});	754	});
656	}	755	}
		756	};
		757
		758	$_[0]->push_read (line => $read_chunk);
		759
		760	} elsif ($arg{on_body}) {
		761	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		762
		763	if ($len) {
		764	$_[0]->on_read (sub {
		765	$len -= length $_[0]{rbuf};
		766
		767	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		768	or return $finish->(undef, 598 => "Request cancelled by on_body");
		769
		770	$len > 0
		771	or $finish->("", undef, undef, 1);
		772	});
657	} else {	773	} else {
658	$_[0]->on_eof (undef);	774	$_[0]->on_eof (sub {
659		775	$finish->("");
660	if ($len) {	776	});
661	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
662	$_[0]->on_read (sub {	777	$_[0]->on_read (sub {
		778	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		779	or $finish->(undef, 598 => "Request cancelled by on_body");
		780	});
		781	}
		782	} else {
		783	$_[0]->on_eof (undef);
		784
		785	if ($len) {
		786	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		787	$_[0]->on_read (sub {
663	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)	788	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
664	if $len <= length $_[0]{rbuf};	789	if $len <= length $_[0]{rbuf};
665	});	790	});
666	} else {	791	} else {
667	$_[0]->on_error (sub {	792	$_[0]->on_error (sub {
668	$! == Errno::EPIPE \|\| !$!	793	($! == Errno::EPIPE \|\| !$!)
669	? $finish->(delete $_[0]{rbuf}, \%hdr)	794	? $finish->(delete $_[0]{rbuf})
670	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });	795	: $finish->(undef, 599 => $_[2]);
671	});	796	});
672	$_[0]->on_read (sub { });	797	$_[0]->on_read (sub { });
673	}
674	}	798	}
675	}	799	}
676	});	800	}
677	});	801	});
678	};	802	};
679		803
680	# now handle proxy-CONNECT method	804	# now handle proxy-CONNECT method
681	if ($proxy && $uscheme eq "https") {	805	if ($proxy && $uscheme eq "https") {
…		…
683		807
684	# maybe re-use $uauthority with patched port?	808	# maybe re-use $uauthority with patched port?
685	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	809	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
686	$state{handle}->push_read (line => $qr_nlnl, sub {	810	$state{handle}->push_read (line => $qr_nlnl, sub {
687	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	811	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
688	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	812	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
689		813
690	if ($2 == 200) {	814	if ($2 == 200) {
691	$rpath = $upath;	815	$rpath = $upath;
692	&$handle_actual_request;	816	&$handle_actual_request;
693	} else {	817	} else {
694	%state = ();	818	%state = ();
695	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	819	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
696	}	820	}
697	});	821	});
698	} else {	822	} else {
699	&$handle_actual_request;	823	&$handle_actual_request;
700	}	824	}
701
702	}, sub {
703	$timeout
704	};	825	};
		826
		827	my $tcp_connect = $arg{tcp_connect}
		828	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		829
		830	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		831
705	};	832	};
706		833
707	defined wantarray && AnyEvent::Util::guard { %state = () }	834	defined wantarray && AnyEvent::Util::guard { %state = () }
708	}	835	}
709		836
…		…
723	&http_request	850	&http_request
724	}	851	}
725		852
726	=back	853	=back
727		854
		855	=head2 DNS CACHING
		856
		857	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		858	the actual connection, which in turn uses AnyEvent::DNS to resolve
		859	hostnames. The latter is a simple stub resolver and does no caching
		860	on its own. If you want DNS caching, you currently have to provide
		861	your own default resolver (by storing a suitable resolver object in
		862	C<$AnyEvent::DNS::RESOLVER>).
		863
728	=head2 GLOBAL FUNCTIONS AND VARIABLES	864	=head2 GLOBAL FUNCTIONS AND VARIABLES
729		865
730	=over 4	866	=over 4
731		867
732	=item AnyEvent::HTTP::set_proxy "proxy-url"	868	=item AnyEvent::HTTP::set_proxy "proxy-url"
733		869
734	Sets the default proxy server to use. The proxy-url must begin with a	870	Sets the default proxy server to use. The proxy-url must begin with a
735	string of the form C<http://host:port> (optionally C<https:...>).	871	string of the form C<http://host:port> (optionally C<https:...>), croaks
		872	otherwise.
		873
		874	To clear an already-set proxy, use C<undef>.
		875
		876	=item $date = AnyEvent::HTTP::format_date $timestamp
		877
		878	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		879	Date (RFC 2616).
		880
		881	=item $timestamp = AnyEvent::HTTP::parse_date $date
		882
		883	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX
		884	timestamp, or C<undef> if the date cannot be parsed.
736		885
737	=item $AnyEvent::HTTP::MAX_RECURSE	886	=item $AnyEvent::HTTP::MAX_RECURSE
738		887
739	The default value for the C<recurse> request parameter (default: C<10>).	888	The default value for the C<recurse> request parameter (default: C<10>).
740		889
…		…
743	The default value for the C<User-Agent> header (the default is	892	The default value for the C<User-Agent> header (the default is
744	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	893	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
745		894
746	=item $AnyEvent::HTTP::MAX_PER_HOST	895	=item $AnyEvent::HTTP::MAX_PER_HOST
747		896
748	The maximum number of concurrent conenctions to the same host (identified	897	The maximum number of concurrent connections to the same host (identified
749	by the hostname). If the limit is exceeded, then the additional requests	898	by the hostname). If the limit is exceeded, then the additional requests
750	are queued until previous connections are closed.	899	are queued until previous connections are closed.
751		900
752	The default value for this is C<4>, and it is highly advisable to not	901	The default value for this is C<4>, and it is highly advisable to not
753	increase it.	902	increase it.
…		…
760		909
761	=back	910	=back
762		911
763	=cut	912	=cut
764		913
		914	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		915	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		916
		917	sub format_date($) {
		918	my ($time) = @_;
		919
		920	# RFC 822/1123 format
		921	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		922
		923	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		924	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		925	$H, $M, $S;
		926	}
		927
		928	sub parse_date($) {
		929	my ($date) = @_;
		930
		931	my ($d, $m, $y, $H, $M, $S);
		932
		933	if ($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$/) {
		934	# RFC 822/1123, required by RFC 2616
		935	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		936
		937	} elsif ($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$/) {
		938	# RFC 850
		939	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		940
		941	} elsif ($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])$/) {
		942	# ISO C's asctime
		943	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		944	}
		945	# other formats fail in the loop below
		946
		947	for (0..11) {
		948	if ($m eq $month[$_]) {
		949	require Time::Local;
		950	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		951	}
		952	}
		953
		954	undef
		955	}
		956
765	sub set_proxy($) {	957	sub set_proxy($) {
		958	if (length $_[0]) {
766	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	959	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		960	or Carp::croak "$_[0]: invalid proxy URL";
		961	$PROXY = [$2, $3 \|\| 3128, $1]
		962	} else {
		963	undef $PROXY;
		964	}
767	}	965	}
768		966
769	# initialise proxy from environment	967	# initialise proxy from environment
		968	eval {
770	set_proxy $ENV{http_proxy};	969	set_proxy $ENV{http_proxy};
		970	};
		971
		972	=head2 SOCKS PROXIES
		973
		974	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		975	compile your perl to support socks, or use an external program such as
		976	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		977	transparently.
		978
		979	Alternatively, for AnyEvent::HTTP only, you can use your own
		980	C<tcp_connect> function that does the proxy handshake - here is an example
		981	that works with socks4a proxies:
		982
		983	use Errno;
		984	use AnyEvent::Util;
		985	use AnyEvent::Socket;
		986	use AnyEvent::Handle;
		987
		988	# host, port and username of/for your socks4a proxy
		989	my $socks_host = "10.0.0.23";
		990	my $socks_port = 9050;
		991	my $socks_user = "";
		992
		993	sub socks4a_connect {
		994	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		995
		996	my $hdl = new AnyEvent::Handle
		997	connect => [$socks_host, $socks_port],
		998	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		999	on_error => sub { $connect_cb->() },
		1000	;
		1001
		1002	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1003
		1004	$hdl->push_read (chunk => 8, sub {
		1005	my ($hdl, $chunk) = @_;
		1006	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1007
		1008	if ($status == 0x5a) {
		1009	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1010	} else {
		1011	$! = Errno::ENXIO; $connect_cb->();
		1012	}
		1013	});
		1014
		1015	$hdl
		1016	}
		1017
		1018	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1019	possibly after switching off other proxy types:
		1020
		1021	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1022
		1023	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1024	my ($data, $headers) = @_;
		1025	...
		1026	};
771		1027
772	=head1 SEE ALSO	1028	=head1 SEE ALSO
773		1029
774	L<AnyEvent>.	1030	L<AnyEvent>.
775		1031

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.46 by root, Sat Jul 25 01:29:09 2009 UTC vs. Revision 1.67 by root, Fri Dec 31 06:18:54 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.46 by root, Sat Jul 25 01:29:09 2009 UTC vs.
Revision 1.67 by root, Fri Dec 31 06:18:54 2010 UTC