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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.49 by root, Wed Aug 5 16:23:48 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 = '1.42';	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,
…		…
145	sent at all).	159	sent at all).
146		160
147	=item timeout => $seconds	161	=item timeout => $seconds
148		162
149	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
150	the timeout, as will read or write activity. Default timeout is 5 minutes.	164	the timeout, as will read or write activity, i.e. this is not an overall
		165	timeout.
		166
		167	Default timeout is 5 minutes.
151		168
152	=item proxy => [$host, $port[, $scheme]] or undef	169	=item proxy => [$host, $port[, $scheme]] or undef
153		170
154	Use the given http proxy for all requests. If not specified, then the	171	Use the given http proxy for all requests. If not specified, then the
155	default proxy (as specified by C<$ENV{http_proxy}>) is used.	172	default proxy (as specified by C<$ENV{http_proxy}>) is used.
…		…
187	verification, highest compatibility) and high-security (CA and common-name	204	verification, highest compatibility) and high-security (CA and common-name
188	verification) TLS context.	205	verification) TLS context.
189		206
190	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
191	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.
192		230
193	=item on_header => $callback->($headers)	231	=item on_header => $callback->($headers)
194		232
195	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
196	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
…		…
314	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	352	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
315		353
316	_slot_schedule $_[0];	354	_slot_schedule $_[0];
317	}	355	}
318		356
319	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
320	our $qr_nlnl = qr{(?<![^\012])\015?\012};	382	our $qr_nlnl = qr{(?<![^\012])\015?\012};
321		383
322	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	384	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
323	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	385	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
324		386
…		…
337	while (my ($k, $v) = each %$hdr) {	399	while (my ($k, $v) = each %$hdr) {
338	$hdr{lc $k} = $v;	400	$hdr{lc $k} = $v;
339	}	401	}
340	}	402	}
341		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
342	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	408	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
343		409
344	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	410	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
345	if $recurse < 0;	411	if $recurse < 0;
346		412
347	my $proxy = $arg{proxy} \|\| $PROXY;	413	my $proxy = $arg{proxy} \|\| $PROXY;
348	my $timeout = $arg{timeout} \|\| $TIMEOUT;	414	my $timeout = $arg{timeout} \|\| $TIMEOUT;
349		415
350	my ($uscheme, $uauthority, $upath, $query, $fragment) =	416	my ($uscheme, $uauthority, $upath, $query, $fragment) =
351	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	417	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
352		418
353	$uscheme = lc $uscheme;	419	$uscheme = lc $uscheme;
354		420
355	my $uport = $uscheme eq "http" ? 80	421	my $uport = $uscheme eq "http" ? 80
356	: $uscheme eq "https" ? 443	422	: $uscheme eq "https" ? 443
357	: 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" });
358		424
359	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	425	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
360	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	426	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
361		427
362	my $uhost = $1;	428	my $uhost = $1;
363	$uport = $2 if defined $2;	429	$uport = $2 if defined $2;
364		430
365	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";	431	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		432	unless exists $hdr{host};
366		433
367	$uhost =~ s/^\[(.*)\]$/$1/;	434	$uhost =~ s/^\[(.*)\]$/$1/;
368	$upath .= "?$query" if length $query;	435	$upath .= $query if length $query;
369		436
370	$upath =~ s%^/?%/%;	437	$upath =~ s%^/?%/%;
371		438
372	# cookie processing	439	# cookie processing
373	if (my $jar = $arg{cookie_jar}) {	440	if (my $jar = $arg{cookie_jar}) {
…		…
413	} else {	480	} else {
414	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	481	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
415	}	482	}
416		483
417	# leave out fragment and query string, just a heuristic	484	# leave out fragment and query string, just a heuristic
418	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	485	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
419	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	486	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
420		487
421	$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};
422		493
423	my %state = (connect_guard => 1);	494	my %state = (connect_guard => 1);
424		495
425	_get_slot $uhost, sub {	496	_get_slot $uhost, sub {
426	$state{slot_guard} = shift;	497	$state{slot_guard} = shift;
427		498
428	return unless $state{connect_guard};	499	return unless $state{connect_guard};
429		500
430	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	501	my $connect_cb = sub {
431	$state{fh} = shift	502	$state{fh} = shift
432	or do {	503	or do {
433	my $err = "$!";	504	my $err = "$!";
434	%state = ();	505	%state = ();
435	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });	506	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
436	};	507	};
437		508
438	pop; # free memory, save a tree	509	pop; # free memory, save a tree
439		510
440	return unless delete $state{connect_guard};	511	return unless delete $state{connect_guard};
441		512
442	# get handle	513	# get handle
443	$state{handle} = new AnyEvent::Handle	514	$state{handle} = new AnyEvent::Handle
444	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
445	timeout => $timeout,	519	timeout => $timeout,
446	peername => $rhost,	520	on_error => sub {
447	tls_ctx => $arg{tls_ctx};	521	%state = ();
		522	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
		523	},
		524	on_eof => sub {
		525	%state = ();
		526	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
		527	},
		528	;
448		529
449	# limit the number of persistent connections	530	# limit the number of persistent connections
450	# keepalive not yet supported	531	# keepalive not yet supported
451	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	532	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
452	++$KA_COUNT{$_[1]};	533	# ++$KA_COUNT{$_[1]};
453	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	534	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
454	--$KA_COUNT{$_[1]}	535	# --$KA_COUNT{$_[1]}
455	};	536	# };
456	$hdr{connection} = "keep-alive";	537	# $hdr{connection} = "keep-alive";
457	} else {	538	# } else {
458	delete $hdr{connection};	539	# delete $hdr{connection};
459	}	540	# }
460
461	# (re-)configure handle
462	$state{handle}->on_error (sub {
463	%state = ();
464	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
465	});
466	$state{handle}->on_eof (sub {
467	%state = ();
468	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
469	});
470		541
471	$state{handle}->starttls ("connect") if $rscheme eq "https";	542	$state{handle}->starttls ("connect") if $rscheme eq "https";
472		543
473	# handle actual, non-tunneled, request	544	# handle actual, non-tunneled, request
474	my $handle_actual_request = sub {	545	my $handle_actual_request = sub {
475	$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};
476		547
477	# send request	548	# send request
478	$state{handle}->push_write (	549	$state{handle}->push_write (
479	"$method $rpath HTTP/1.0\015\012"	550	"$method $rpath HTTP/1.1\015\012"
480	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	551	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
481	. "\015\012"	552	. "\015\012"
482	. (delete $arg{body})	553	. (delete $arg{body})
483	);	554	);
484		555
		556	# return if error occured during push_write()
		557	return unless %state;
		558
485	%hdr = (); # reduce memory usage, save a kitten	559	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
486		560
487	# status line	561	# status line and headers
488	$state{handle}->push_read (line => $qr_nl, sub {	562	$state{handle}->push_read (line => $qr_nlnl, sub {
489	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	563	my $keepalive = pop;
490	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
491		564
492	my %hdr = ( # response headers
493	HTTPVersion => ",$1",
494	Status => ",$2",
495	Reason => ",$3",
496	URL => ",$url"
497	);
498
499	# headers, could be optimized a bit
500	$state{handle}->unshift_read (line => $qr_nlnl, sub {
501	for ("$_[1]") {	565	for ("$_[1]") {
502	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.
503		567
504	# things seen, not parsed:	568	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
505	# p3pP="NON CUR OTPi OUR NOR UNI"	569	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
506		570
507	$hdr{lc $1} .= ",$2"	571	push @pseudo,
508	while /\G	572	HTTPVersion => $1,
509	([^:\000-\037]*):	573	Status => $2,
510	[\011\040]*	574	Reason => $3,
511	((?: [^\012]+ \| \012[\011\040] )*)
512	\012
513	/gxc;
514
515	/\G$/	575	;
		576
		577	my $hdr = parse_hdr
516	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	$url =~ s/\/[^\/]*$//;
517	}	594	}
518		595
519	substr $_, 0, 1, ""
520	for values %hdr;
521
522	# redirect handling
523	# microsoft and other shitheads don't give a shit for following standards,
524	# try to support some common forms of broken Location headers.
525	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
526	$hdr{location} =~ s/^\.\/+//;
527
528	my $url = "$rscheme://$uhost:$uport";
529
530	unless ($hdr{location} =~ s/^\///) {
531	$url .= $upath;
532	$url =~ s/\/[^\/]*$//;
533	}
534
535	$hdr{location} = "$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;
536	}	615	}
		616	}
537		617
538	my $redirect;	618	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
		619	$state{handle}->destroy if $state{handle};
		620	%state = ();
539		621
		622	if (defined $_[1]) {
		623	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		624	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		625	}
		626
		627	# set-cookie processing
540	if ($recurse) {	628	if ($arg{cookie_jar}) {
541	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {	629	for ($hdr{"set-cookie"}) {
542	# apparently, mozilla et al. just change POST to GET here	630	# parse NAME=VALUE
543	# more research is needed before we do the same	631	my @kv;
		632
		633	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
544	$redirect = 1;	634	my $name = $1;
545	} elsif ($hdr{Status} == 303) {	635	my $value = $3;
546	# even http/1.1 is unclear on how to mutate the method	636
547	$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
548	$redirect = 1;	669	# store it
549	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {	670	$arg{cookie_jar}{version} = 1;
550	$redirect = 1;	671	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		672
		673	redo if /\G\s*,/gc;
551	}	674	}
552	}	675	}
553		676
554	my $finish = sub {
555	$state{handle}->destroy if $state{handle};
556	%state = ();
557
558	# set-cookie processing
559	if ($arg{cookie_jar}) {
560	for ($_[1]{"set-cookie"}) {
561	# parse NAME=VALUE
562	my @kv;
563
564	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
565	my $name = $1;
566	my $value = $3;
567
568	unless ($value) {
569	$value = $2;
570	$value =~ s/\\(.)/$1/gs;
571	}
572
573	push @kv, $name => $value;
574
575	last unless /\G\s*;/gc;
576	}
577
578	last unless @kv;
579
580	my $name = shift @kv;
581	my %kv = (value => shift @kv, @kv);
582
583	my $cdom;
584	my $cpath = (delete $kv{path}) \|\| "/";
585
586	if (exists $kv{domain}) {
587	$cdom = delete $kv{domain};
588
589	$cdom =~ s/^\.?/./; # make sure it starts with a "."
590
591	next if $cdom =~ /\.$/;
592
593	# this is not rfc-like and not netscape-like. go figure.
594	my $ndots = $cdom =~ y/.//;
595	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
596	} else {
597	$cdom = $uhost;
598	}
599
600	# store it
601	$arg{cookie_jar}{version} = 1;
602	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
603
604	redo if /\G\s*,/gc;
605	}
606	}
607
608	if ($redirect && exists $hdr{location}) {	677	if ($redirect && exists $hdr{location}) {
609	# we ignore any errors, as it is very common to receive	678	# we ignore any errors, as it is very common to receive
610	# Content-Length != 0 but no actual body	679	# Content-Length != 0 but no actual body
611	# we also access %hdr, as $_[1] might be an erro	680	# we also access %hdr, as $_[1] might be an erro
612	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);	681	http_request (
613	} else {	682	$method => $hdr{location},
614	$cb->($_[0], $_[1]);
615	}	683	%arg,
		684	recurse => $recurse - 1,
		685	Redirect => [$_[0], \%hdr],
616	};	686	$cb);
617
618	my $len = $hdr{"content-length"};
619
620	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
621	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
622	} elsif (
623	$hdr{Status} =~ /^(?:1..\|[23]04)$/
624	or $method eq "HEAD"
625	or (defined $len && !$len)
626	) {
627	# no body
628	$finish->("", \%hdr);
629	} 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	$finish->("", undef, undef, 1);
		703	} else {
630	# body handling, four different code paths	704	# body handling, many different code paths
631	# for want_body_handle, on_body (2x), normal (2x)	705	# - no body expected
632	# we might read too much here, but it does not matter yet (no pers. connections)	706	# - want_body_handle
		707	# - te chunked
		708	# - 2x length known (with or without on_body)
		709	# - 2x length not known (with or without on_body)
633	if (!$redirect && $arg{want_body_handle}) {	710	if (!$redirect && $arg{want_body_handle}) {
634	$_[0]->on_eof (undef);	711	$_[0]->on_eof (undef);
635	$_[0]->on_error (undef);	712	$_[0]->on_error (undef);
636	$_[0]->on_read (undef);	713	$_[0]->on_read (undef);
637		714
638	$finish->(delete $state{handle}, \%hdr);	715	$finish->(delete $state{handle});
639		716
640	} elsif ($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
641	$_[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 $1;
		728
642	if ($len) {	729	if ($len) {
643	$_[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
644	$_[0]->on_read (sub {	734	$_[0]->push_read (line => sub {
645	$len -= length $_[0]{rbuf};	735	length $_[1]
646		736	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
647	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	737	$_[0]->push_read (line => $read_chunk);
648	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
649
650	$len > 0	738	});
651	or $finish->("", \%hdr);
652	});	739	});
653	} else {	740	} else {
654	$_[0]->on_eof (sub {	741	$_[0]->push_read (line => $qr_nlnl, sub {
655	$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	}
656	});	751	}
657	$_[0]->on_read (sub {	752
658	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	753	$finish->($body, undef, undef, 1);
659	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
660	});	754	});
661	}	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	});
662	} else {	773	} else {
663	$_[0]->on_eof (undef);	774	$_[0]->on_eof (sub {
664		775	$finish->("");
665	if ($len) {	776	});
666	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
667	$_[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 {
668	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)	788	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
669	if $len <= length $_[0]{rbuf};	789	if $len <= length $_[0]{rbuf};
670	});	790	});
671	} else {	791	} else {
672	$_[0]->on_error (sub {	792	$_[0]->on_error (sub {
673	$! == Errno::EPIPE \|\| !$!	793	($! == Errno::EPIPE \|\| !$!)
674	? $finish->(delete $_[0]{rbuf}, \%hdr)	794	? $finish->(delete $_[0]{rbuf})
675	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });	795	: $finish->(undef, 599 => $_[2]);
676	});	796	});
677	$_[0]->on_read (sub { });	797	$_[0]->on_read (sub { });
678	}
679	}	798	}
680	}	799	}
681	});	800	}
682	});	801	});
683	};	802	};
684		803
685	# now handle proxy-CONNECT method	804	# now handle proxy-CONNECT method
686	if ($proxy && $uscheme eq "https") {	805	if ($proxy && $uscheme eq "https") {
…		…
688		807
689	# maybe re-use $uauthority with patched port?	808	# maybe re-use $uauthority with patched port?
690	$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");
691	$state{handle}->push_read (line => $qr_nlnl, sub {	810	$state{handle}->push_read (line => $qr_nlnl, sub {
692	$_[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
693	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])" }));
694		813
695	if ($2 == 200) {	814	if ($2 == 200) {
696	$rpath = $upath;	815	$rpath = $upath;
697	&$handle_actual_request;	816	&$handle_actual_request;
698	} else {	817	} else {
699	%state = ();	818	%state = ();
700	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	819	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
701	}	820	}
702	});	821	});
703	} else {	822	} else {
704	&$handle_actual_request;	823	&$handle_actual_request;
705	}	824	}
706
707	}, sub {
708	$timeout
709	};	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 { $timeout });
		831
710	};	832	};
711		833
712	defined wantarray && AnyEvent::Util::guard { %state = () }	834	defined wantarray && AnyEvent::Util::guard { %state = () }
713	}	835	}
714		836
…		…
728	&http_request	850	&http_request
729	}	851	}
730		852
731	=back	853	=back
732		854
		855	=head2 DNS CACHING
		856
		857	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		858	the actual connection, which in turn uses AnyEvent::DNS to resolve
		859	hostnames. The latter is a simple stub resolver and does no caching
		860	on its own. If you want DNS caching, you currently have to provide
		861	your own default resolver (by storing a suitable resolver object in
		862	C<$AnyEvent::DNS::RESOLVER>).
		863
733	=head2 GLOBAL FUNCTIONS AND VARIABLES	864	=head2 GLOBAL FUNCTIONS AND VARIABLES
734		865
735	=over 4	866	=over 4
736		867
737	=item AnyEvent::HTTP::set_proxy "proxy-url"	868	=item AnyEvent::HTTP::set_proxy "proxy-url"
738		869
739	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
740	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.
741		885
742	=item $AnyEvent::HTTP::MAX_RECURSE	886	=item $AnyEvent::HTTP::MAX_RECURSE
743		887
744	The default value for the C<recurse> request parameter (default: C<10>).	888	The default value for the C<recurse> request parameter (default: C<10>).
745		889
…		…
765		909
766	=back	910	=back
767		911
768	=cut	912	=cut
769		913
		914	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		915	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		916
		917	sub format_date($) {
		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, $_, $y);
		951	}
		952	}
		953
		954	undef
		955	}
		956
770	sub set_proxy($) {	957	sub set_proxy($) {
		958	if (length $_[0]) {
771	$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	}
772	}	965	}
773		966
774	# initialise proxy from environment	967	# initialise proxy from environment
		968	eval {
775	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	};
776		1027
777	=head1 SEE ALSO	1028	=head1 SEE ALSO
778		1029
779	L<AnyEvent>.	1030	L<AnyEvent>.
780		1031

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.49 by root, Wed Aug 5 16:23:48 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 1.49 by root, Wed Aug 5 16:23:48 2009 UTC vs.
Revision 1.67 by root, Fri Dec 31 06:18:54 2010 UTC