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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.56 by root, Mon Sep 6 05:30:54 2010 UTC vs.
Revision 1.68 by root, Fri Dec 31 19:22:18 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 for C<TE:>, C<Referer:> and C<User-Agent:> (this can
156	suppressed by using C<undef> for these headers in which case they won't be	158	be suppressed by using C<undef> for these headers in which case they won't
157	sent at all).	159	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 => $hash_ref
181		183
182	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
…		…
212	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>	214	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
213	and behaves exactly the same way (e.g. it has to provide a	215	and behaves exactly the same way (e.g. it has to provide a
214	timeout). See the description for the C<$prepare_cb> argument of	216	timeout). See the description for the C<$prepare_cb> argument of
215	C<AnyEvent::Socket::tcp_connect> for details.	217	C<AnyEvent::Socket::tcp_connect> for details.
216		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.
		230
217	=item on_header => $callback->($headers)	231	=item on_header => $callback->($headers)
218		232
219	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
220	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
221	locally-generated errors).	235	locally-generated errors).
…		…
226		240
227	This callback is useful, among other things, to quickly reject unwanted	241	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	242	content, which, if it is supposed to be rare, can be faster than first
229	doing a C<HEAD> request.	243	doing a C<HEAD> request.
230		244
		245	The downside is that cancelling the request makes it impossible to re-use
		246	the connection. Also, the C<on_header> callback will not receive any
		247	trailer (headers sent after the response body).
		248
231	Example: cancel the request unless the content-type is "text/html".	249	Example: cancel the request unless the content-type is "text/html".
232		250
233	on_header => sub {	251	on_header => sub {
234	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	252	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
235	},	253	},
…		…
241	string instead of the body data.	259	string instead of the body data.
242		260
243	It has to return either true (in which case AnyEvent::HTTP will continue),	261	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	262	or false, in which case AnyEvent::HTTP will cancel the download (and call
245	the completion callback with an error code of C<598>).	263	the completion callback with an error code of C<598>).
		264
		265	The downside to cancelling the request is that it makes it impossible to
		266	re-use the connection.
246		267
247	This callback is useful when the data is too large to be held in memory	268	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	269	(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.	270	be extracted, or when the body should be processed incrementally.
250		271
…		…
276	If you think you need this, first have a look at C<on_body>, to see if	297	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.	298	that doesn't solve your problem in a better way.
278		299
279	=back	300	=back
280		301
281	Example: make a simple HTTP GET request for http://www.nethype.de/	302	Example: do a simple HTTP GET request for http://www.nethype.de/ and print
		303	the response body.
282		304
283	http_request GET => "http://www.nethype.de/", sub {	305	http_request GET => "http://www.nethype.de/", sub {
284	my ($body, $hdr) = @_;	306	my ($body, $hdr) = @_;
285	print "$body\n";	307	print "$body\n";
286	};	308	};
287		309
288	Example: make a HTTP HEAD request on https://www.google.com/, use a	310	Example: do a HTTP HEAD request on https://www.google.com/, use a
289	timeout of 30 seconds.	311	timeout of 30 seconds.
290		312
291	http_request	313	http_request
292	GET => "https://www.google.com",	314	GET => "https://www.google.com",
293	timeout => 30,	315	timeout => 30,
…		…
296	use Data::Dumper;	318	use Data::Dumper;
297	print Dumper $hdr;	319	print Dumper $hdr;
298	}	320	}
299	;	321	;
300		322
301	Example: make another simple HTTP GET request, but immediately try to	323	Example: do another simple HTTP GET request, but immediately try to
302	cancel it.	324	cancel it.
303		325
304	my $request = http_request GET => "http://www.nethype.de/", sub {	326	my $request = http_request GET => "http://www.nethype.de/", sub {
305	my ($body, $hdr) = @_;	327	my ($body, $hdr) = @_;
306	print "$body\n";	328	print "$body\n";
…		…
338	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	360	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
339		361
340	_slot_schedule $_[0];	362	_slot_schedule $_[0];
341	}	363	}
342		364
343	our $qr_nl = qr{\015?\012};	365	# continue to parse $_ for headers and place them into the arg
		366	sub parse_hdr() {
		367	my %hdr;
		368
		369	# things seen, not parsed:
		370	# p3pP="NON CUR OTPi OUR NOR UNI"
		371
		372	$hdr{lc $1} .= ",$2"
		373	while /\G
		374	([^:\000-\037]*):
		375	[\011\040]*
		376	((?: [^\012]+ \| \012[\011\040] )*)
		377	\012
		378	/gxc;
		379
		380	/\G$/
		381	or return;
		382
		383	# remove the "," prefix we added to all headers above
		384	substr $_, 0, 1, ""
		385	for values %hdr;
		386
		387	\%hdr
		388	}
		389
344	our $qr_nlnl = qr{(?<![^\012])\015?\012};	390	our $qr_nlnl = qr{(?<![^\012])\015?\012};
345		391
346	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	392	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
347	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	393	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
348		394
…		…
367	my @pseudo = (URL => $url);	413	my @pseudo = (URL => $url);
368	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	414	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
369		415
370	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	416	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
371		417
372	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	418	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
373	if $recurse < 0;	419	if $recurse < 0;
374		420
375	my $proxy = $arg{proxy} \|\| $PROXY;	421	my $proxy = $arg{proxy} \|\| $PROXY;
376	my $timeout = $arg{timeout} \|\| $TIMEOUT;	422	my $timeout = $arg{timeout} \|\| $TIMEOUT;
377		423
…		…
380		426
381	$uscheme = lc $uscheme;	427	$uscheme = lc $uscheme;
382		428
383	my $uport = $uscheme eq "http" ? 80	429	my $uport = $uscheme eq "http" ? 80
384	: $uscheme eq "https" ? 443	430	: $uscheme eq "https" ? 443
385	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });	431	: return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
386		432
387	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	433	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
388	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	434	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
389		435
390	my $uhost = $1;	436	my $uhost = $1;
391	$uport = $2 if defined $2;	437	$uport = $2 if defined $2;
392		438
393	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	439	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
442	} else {	488	} else {
443	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	489	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
444	}	490	}
445		491
446	# leave out fragment and query string, just a heuristic	492	# leave out fragment and query string, just a heuristic
447	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	493	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
448	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	494	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
449		495
450	$hdr{"content-length"} = length $arg{body}	496	$hdr{"content-length"} = length $arg{body}
451	if length $arg{body} \|\| $method ne "GET";	497	if length $arg{body} \|\| $method ne "GET";
452		498
		499	$hdr{connection} = "close TE"; #1.1
		500	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		501
453	my %state = (connect_guard => 1);	502	my %state = (connect_guard => 1);
454		503
455	_get_slot $uhost, sub {	504	_get_slot $uhost, sub {
456	$state{slot_guard} = shift;	505	$state{slot_guard} = shift;
457		506
458	return unless $state{connect_guard};	507	return unless $state{connect_guard};
459		508
460	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	509	my $connect_cb = sub {
461	$state{fh} = shift	510	$state{fh} = shift
462	or do {	511	or do {
463	my $err = "$!";	512	my $err = "$!";
464	%state = ();	513	%state = ();
465	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	514	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
466	};	515	};
467		516
468	pop; # free memory, save a tree	517	pop; # free memory, save a tree
469		518
470	return unless delete $state{connect_guard};	519	return unless delete $state{connect_guard};
…		…
476	tls_ctx => $arg{tls_ctx},	525	tls_ctx => $arg{tls_ctx},
477	# these need to be reconfigured on keepalive handles	526	# these need to be reconfigured on keepalive handles
478	timeout => $timeout,	527	timeout => $timeout,
479	on_error => sub {	528	on_error => sub {
480	%state = ();	529	%state = ();
481	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	530	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
482	},	531	},
483	on_eof => sub {	532	on_eof => sub {
484	%state = ();	533	%state = ();
485	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	534	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
486	},	535	},
487	;	536	;
488		537
489	# limit the number of persistent connections	538	# limit the number of persistent connections
490	# keepalive not yet supported	539	# keepalive not yet supported
…		…
492	# ++$KA_COUNT{$_[1]};	541	# ++$KA_COUNT{$_[1]};
493	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	542	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
494	# --$KA_COUNT{$_[1]}	543	# --$KA_COUNT{$_[1]}
495	# };	544	# };
496	# $hdr{connection} = "keep-alive";	545	# $hdr{connection} = "keep-alive";
497	# } else {
498	delete $hdr{connection};
499	# }	546	# }
500		547
501	$state{handle}->starttls ("connect") if $rscheme eq "https";	548	$state{handle}->starttls ("connect") if $rscheme eq "https";
502		549
503	# handle actual, non-tunneled, request	550	# handle actual, non-tunneled, request
504	my $handle_actual_request = sub {	551	my $handle_actual_request = sub {
505	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	552	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
506		553
507	# send request	554	# send request
508	$state{handle}->push_write (	555	$state{handle}->push_write (
509	"$method $rpath HTTP/1.0\015\012"	556	"$method $rpath HTTP/1.1\015\012"
510	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	557	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
511	. "\015\012"	558	. "\015\012"
512	. (delete $arg{body})	559	. (delete $arg{body})
513	);	560	);
514		561
515	# return if error occured during push_write()	562	# return if error occured during push_write()
516	return unless %state;	563	return unless %state;
517		564
518	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use	565	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
519		566
520	# status line	567	# status line and headers
521	$state{handle}->push_read (line => $qr_nl, sub {	568	$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]") {	569	for ("$_[1]") {
534	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	570	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
535		571
536	# things seen, not parsed:	572	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
537	# p3pP="NON CUR OTPi OUR NOR UNI"	573	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
538		574
539	$hdr{lc $1} .= ",$2"	575	# 100 Continue handling
540	while /\G	576	# should not happen as we don't send expect: 100-continue,
541	([^:\000-\037]*):	577	# but we handle it just in case.
542	[\011\040]*	578	# since we send the request body regardless, if we get an error
543	((?: [^\012]+ \| \012[\011\040] )*)	579	# we are out of-sync, which we currently do NOT handle correctly.
544	\012	580	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
545	/gxc;	581	if $2 eq 100;
546		582
		583	push @pseudo,
		584	HTTPVersion => $1,
		585	Status => $2,
		586	Reason => $3,
547	/\G$/	587	;
		588
		589	my $hdr = parse_hdr
548	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));	590	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
		591
		592	%hdr = (%$hdr, @pseudo);
		593	}
		594
		595	# redirect handling
		596	# microsoft and other shitheads don't give a shit for following standards,
		597	# try to support some common forms of broken Location headers.
		598	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		599	$hdr{location} =~ s/^\.\/+//;
		600
		601	my $url = "$rscheme://$uhost:$uport";
		602
		603	unless ($hdr{location} =~ s/^\///) {
		604	$url .= $upath;
		605	$url =~ s/\/[^\/]*$//;
549	}	606	}
550		607
551	# remove the "," prefix we added to all headers above
552	substr $_, 0, 1, ""
553	for values %hdr;
554
555	# patch in all pseudo headers
556	%hdr = (%hdr, @pseudo);
557
558	# redirect handling
559	# microsoft and other shitheads don't give a shit for following standards,
560	# try to support some common forms of broken Location headers.
561	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
562	$hdr{location} =~ s/^\.\/+//;
563
564	my $url = "$rscheme://$uhost:$uport";
565
566	unless ($hdr{location} =~ s/^\///) {
567	$url .= $upath;
568	$url =~ s/\/[^\/]*$//;
569	}
570
571	$hdr{location} = "$url/$hdr{location}";	608	$hdr{location} = "$url/$hdr{location}";
		609	}
		610
		611	my $redirect;
		612
		613	if ($recurse) {
		614	my $status = $hdr{Status};
		615
		616	# industry standard is to redirect POST as GET for
		617	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
		618	# also, the UA should ask the user for 301 and 307 and POST,
		619	# industry standard seems to be to simply follow.
		620	# we go with the industry standard.
		621	if ($status == 301 or $status == 302 or $status == 303) {
		622	# HTTP/1.1 is unclear on how to mutate the method
		623	$method = "GET" unless $method eq "HEAD";
		624	$redirect = 1;
		625	} elsif ($status == 307) {
		626	$redirect = 1;
572	}	627	}
		628	}
573		629
		630	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
574	my $redirect;	631	my $keepalive = pop;
575		632
		633	$state{handle}->destroy if $state{handle};
		634	%state = ();
		635
		636	if (defined $_[1]) {
		637	$hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
		638	$hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
		639	}
		640
		641	# set-cookie processing
576	if ($recurse) {	642	if ($arg{cookie_jar}) {
577	my $status = $hdr{Status};	643	for ($hdr{"set-cookie"}) {
		644	# parse NAME=VALUE
		645	my @kv;
578		646
579	if (($status == 301 \|\| $status == 302) && $method ne "POST") {	647	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
580	# apparently, mozilla et al. just change POST to GET here
581	# more research is needed before we do the same
582	$redirect = 1;	648	my $name = $1;
583	} elsif ($status == 303) {	649	my $value = $3;
584	# even http/1.1 is unclear on how to mutate the method	650
585	$method = "GET" unless $method eq "HEAD";	651	unless ($value) {
		652	$value = $2;
		653	$value =~ s/\\(.)/$1/gs;
		654	}
		655
		656	push @kv, $name => $value;
		657
		658	last unless /\G\s*;/gc;
		659	}
		660
		661	last unless @kv;
		662
		663	my $name = shift @kv;
		664	my %kv = (value => shift @kv, @kv);
		665
		666	my $cdom;
		667	my $cpath = (delete $kv{path}) \|\| "/";
		668
		669	if (exists $kv{domain}) {
		670	$cdom = delete $kv{domain};
		671
		672	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		673
		674	next if $cdom =~ /\.$/;
		675
		676	# this is not rfc-like and not netscape-like. go figure.
		677	my $ndots = $cdom =~ y/.//;
		678	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		679	} else {
		680	$cdom = $uhost;
		681	}
		682
586	$redirect = 1;	683	# store it
587	} elsif ($status == 307 && $method =~ /^(?:GET\|HEAD)$/) {	684	$arg{cookie_jar}{version} = 1;
588	$redirect = 1;	685	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		686
		687	redo if /\G\s*,/gc;
589	}	688	}
590	}	689	}
591		690
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 $hdr{location}) {	691	if ($redirect && exists $hdr{location}) {
647	# we ignore any errors, as it is very common to receive	692	# we ignore any errors, as it is very common to receive
648	# Content-Length != 0 but no actual body	693	# Content-Length != 0 but no actual body
649	# we also access %hdr, as $_[1] might be an erro	694	# we also access %hdr, as $_[1] might be an erro
650	http_request (	695	http_request (
651	$method => $hdr{location},	696	$method => $hdr{location},
652	%arg,	697	%arg,
653	recurse => $recurse - 1,	698	recurse => $recurse - 1,
654	Redirect => \@_,	699	Redirect => [$_[0], \%hdr],
655	$cb);	700	$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 {	701	} else {
		702	$cb->($_[0], \%hdr);
		703	}
		704	};
		705
		706	my $len = $hdr{"content-length"};
		707
		708	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		709	$finish->(undef, 598 => "Request cancelled by on_header");
		710	} elsif (
		711	$hdr{Status} =~ /^(?:1..\|204\|205\|304)$/
		712	or $method eq "HEAD"
		713	or (defined $len && !$len)
		714	) {
		715	# no body
		716	$finish->("", undef, undef, 1);
		717	} else {
673	# body handling, four different code paths	718	# body handling, many different code paths
674	# for want_body_handle, on_body (2x), normal (2x)	719	# - no body expected
675	# we might read too much here, but it does not matter yet (no pers. connections)	720	# - want_body_handle
		721	# - te chunked
		722	# - 2x length known (with or without on_body)
		723	# - 2x length not known (with or without on_body)
676	if (!$redirect && $arg{want_body_handle}) {	724	if (!$redirect && $arg{want_body_handle}) {
677	$_[0]->on_eof (undef);	725	$_[0]->on_eof (undef);
678	$_[0]->on_error (undef);	726	$_[0]->on_error (undef);
679	$_[0]->on_read (undef);	727	$_[0]->on_read (undef);
680		728
681	$finish->(delete $state{handle}, \%hdr);	729	$finish->(delete $state{handle});
682		730
683	} elsif ($arg{on_body}) {	731	} elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) {
		732	my $cl = 0;
		733	my $body = undef;
		734	my $on_body = $arg{on_body} \|\| sub { $body .= shift; 1 };
		735
684	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });	736	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		737
		738	my $read_chunk; $read_chunk = sub {
		739	$_[1] =~ /^([0-9a-fA-F]+)/
		740	or $finish->(undef, 599 => "Garbled chunked transfer encoding");
		741
		742	my $len = hex $1;
		743
685	if ($len) {	744	if ($len) {
686	$_[0]->on_eof (undef);	745	$cl += $len;
		746
		747	$_[0]->push_read (chunk => $len, sub {
		748	$on_body->($_[1], \%hdr)
		749	or return $finish->(undef, 598 => "Request cancelled by on_body");
		750
687	$_[0]->on_read (sub {	751	$_[0]->push_read (line => sub {
688	$len -= length $_[0]{rbuf};	752	length $_[1]
689		753	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
690	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	754	$_[0]->push_read (line => $read_chunk);
691	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
692
693	$len > 0	755	});
694	or $finish->("", \%hdr);
695	});	756	});
696	} else {	757	} else {
697	$_[0]->on_eof (sub {	758	$hdr{"content-length"} \|\|= $cl;
698	$finish->("", \%hdr);	759
		760	$_[0]->push_read (line => $qr_nlnl, sub {
		761	if (length $_[1]) {
		762	for ("$_[1]") {
		763	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		764
		765	my $hdr = parse_hdr
		766	or return $finish->(undef, 599 => "Garbled response trailers");
		767
		768	%hdr = (%hdr, %$hdr);
		769	}
699	});	770	}
700	$_[0]->on_read (sub {	771
701	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	772	$finish->($body, undef, undef, 1);
702	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
703	});	773	});
704	}	774	}
		775	};
		776
		777	$_[0]->push_read (line => $read_chunk);
		778
		779	} elsif ($arg{on_body}) {
		780	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		781
		782	if ($len) {
		783	$_[0]->on_read (sub {
		784	$len -= length $_[0]{rbuf};
		785
		786	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		787	or return $finish->(undef, 598 => "Request cancelled by on_body");
		788
		789	$len > 0
		790	or $finish->("", undef, undef, 1);
		791	});
705	} else {	792	} else {
706	$_[0]->on_eof (undef);	793	$_[0]->on_eof (sub {
707		794	$finish->("");
708	if ($len) {	795	});
709	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
710	$_[0]->on_read (sub {	796	$_[0]->on_read (sub {
		797	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		798	or $finish->(undef, 598 => "Request cancelled by on_body");
		799	});
		800	}
		801	} else {
		802	$_[0]->on_eof (undef);
		803
		804	if ($len) {
		805	$_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
		806	$_[0]->on_read (sub {
711	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)	807	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
712	if $len <= length $_[0]{rbuf};	808	if $len <= length $_[0]{rbuf};
713	});	809	});
714	} else {	810	} else {
715	$_[0]->on_error (sub {	811	$_[0]->on_error (sub {
716	$! == Errno::EPIPE \|\| !$!	812	($! == Errno::EPIPE \|\| !$!)
717	? $finish->(delete $_[0]{rbuf}, \%hdr)	813	? $finish->(delete $_[0]{rbuf})
718	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });	814	: $finish->(undef, 599 => $_[2]);
719	});	815	});
720	$_[0]->on_read (sub { });	816	$_[0]->on_read (sub { });
721	}
722	}	817	}
723	}	818	}
724	});	819	}
725	});	820	};
		821
		822	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
726	};	823	};
727		824
728	# now handle proxy-CONNECT method	825	# now handle proxy-CONNECT method
729	if ($proxy && $uscheme eq "https") {	826	if ($proxy && $uscheme eq "https") {
730	# oh dear, we have to wrap it into a connect request	827	# oh dear, we have to wrap it into a connect request
731		828
732	# maybe re-use $uauthority with patched port?	829	# 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");	830	$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 {	831	$state{handle}->push_read (line => $qr_nlnl, sub {
735	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	832	$_[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 }));	833	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
737		834
738	if ($2 == 200) {	835	if ($2 == 200) {
739	$rpath = $upath;	836	$rpath = $upath;
740	&$handle_actual_request;	837	&$handle_actual_request;
741	} else {	838	} else {
742	%state = ();	839	%state = ();
743	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	840	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
744	}	841	}
745	});	842	});
746	} else {	843	} else {
747	&$handle_actual_request;	844	&$handle_actual_request;
748	}	845	}
		846	};
749		847
750	}, $arg{on_prepare} \|\| sub { $timeout };	848	my $tcp_connect = $arg{tcp_connect}
		849	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		850
		851	$state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} \|\| sub { $timeout });
		852
751	};	853	};
752		854
753	defined wantarray && AnyEvent::Util::guard { %state = () }	855	defined wantarray && AnyEvent::Util::guard { %state = () }
754	}	856	}
755		857
…		…
790	string of the form C<http://host:port> (optionally C<https:...>), croaks	892	string of the form C<http://host:port> (optionally C<https:...>), croaks
791	otherwise.	893	otherwise.
792		894
793	To clear an already-set proxy, use C<undef>.	895	To clear an already-set proxy, use C<undef>.
794		896
		897	=item $date = AnyEvent::HTTP::format_date $timestamp
		898
		899	Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
		900	Date (RFC 2616).
		901
		902	=item $timestamp = AnyEvent::HTTP::parse_date $date
		903
		904	Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX
		905	timestamp, or C<undef> if the date cannot be parsed.
		906
795	=item $AnyEvent::HTTP::MAX_RECURSE	907	=item $AnyEvent::HTTP::MAX_RECURSE
796		908
797	The default value for the C<recurse> request parameter (default: C<10>).	909	The default value for the C<recurse> request parameter (default: C<10>).
798		910
799	=item $AnyEvent::HTTP::USERAGENT	911	=item $AnyEvent::HTTP::USERAGENT
…		…
817	connections. This number of can be useful for load-leveling.	929	connections. This number of can be useful for load-leveling.
818		930
819	=back	931	=back
820		932
821	=cut	933	=cut
		934
		935	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		936	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		937
		938	sub format_date($) {
		939	my ($time) = @_;
		940
		941	# RFC 822/1123 format
		942	my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
		943
		944	sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
		945	$weekday[$wday], $mday, $month[$mon], $year + 1900,
		946	$H, $M, $S;
		947	}
		948
		949	sub parse_date($) {
		950	my ($date) = @_;
		951
		952	my ($d, $m, $y, $H, $M, $S);
		953
		954	if ($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$/) {
		955	# RFC 822/1123, required by RFC 2616
		956	($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
		957
		958	} elsif ($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$/) {
		959	# RFC 850
		960	($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
		961
		962	} elsif ($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])$/) {
		963	# ISO C's asctime
		964	($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
		965	}
		966	# other formats fail in the loop below
		967
		968	for (0..11) {
		969	if ($m eq $month[$_]) {
		970	require Time::Local;
		971	return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
		972	}
		973	}
		974
		975	undef
		976	}
822		977
823	sub set_proxy($) {	978	sub set_proxy($) {
824	if (length $_[0]) {	979	if (length $_[0]) {
825	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	980	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
826	or Carp::croak "$_[0]: invalid proxy URL";	981	or Carp::croak "$_[0]: invalid proxy URL";
…		…
833	# initialise proxy from environment	988	# initialise proxy from environment
834	eval {	989	eval {
835	set_proxy $ENV{http_proxy};	990	set_proxy $ENV{http_proxy};
836	};	991	};
837		992
		993	=head2 SOCKS PROXIES
		994
		995	Socks proxies are not directly supported by AnyEvent::HTTP. You can
		996	compile your perl to support socks, or use an external program such as
		997	F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
		998	transparently.
		999
		1000	Alternatively, for AnyEvent::HTTP only, you can use your own
		1001	C<tcp_connect> function that does the proxy handshake - here is an example
		1002	that works with socks4a proxies:
		1003
		1004	use Errno;
		1005	use AnyEvent::Util;
		1006	use AnyEvent::Socket;
		1007	use AnyEvent::Handle;
		1008
		1009	# host, port and username of/for your socks4a proxy
		1010	my $socks_host = "10.0.0.23";
		1011	my $socks_port = 9050;
		1012	my $socks_user = "";
		1013
		1014	sub socks4a_connect {
		1015	my ($host, $port, $connect_cb, $prepare_cb) = @_;
		1016
		1017	my $hdl = new AnyEvent::Handle
		1018	connect => [$socks_host, $socks_port],
		1019	on_prepare => sub { $prepare_cb->($_[0]{fh}) },
		1020	on_error => sub { $connect_cb->() },
		1021	;
		1022
		1023	$hdl->push_write (pack "CCnNZZ", 4, 1, $port, 1, $socks_user, $host);
		1024
		1025	$hdl->push_read (chunk => 8, sub {
		1026	my ($hdl, $chunk) = @_;
		1027	my ($status, $port, $ipn) = unpack "xCna4", $chunk;
		1028
		1029	if ($status == 0x5a) {
		1030	$connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
		1031	} else {
		1032	$! = Errno::ENXIO; $connect_cb->();
		1033	}
		1034	});
		1035
		1036	$hdl
		1037	}
		1038
		1039	Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
		1040	possibly after switching off other proxy types:
		1041
		1042	AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
		1043
		1044	http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
		1045	my ($data, $headers) = @_;
		1046	...
		1047	};
		1048
838	=head1 SEE ALSO	1049	=head1 SEE ALSO
839		1050
840	L<AnyEvent>.	1051	L<AnyEvent>.
841		1052
842	=head1 AUTHOR	1053	=head1 AUTHOR

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.56 by root, Mon Sep 6 05:30:54 2010 UTC vs. Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.56 by root, Mon Sep 6 05:30:54 2010 UTC vs.
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC