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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs.
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC

…		…
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
49		49
50	use base Exporter::;	50	use base Exporter::;
51		51
52	our $VERSION = '1.46';	52	our $VERSION = '1.5';
53		53
54	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
55		55
56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
57	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
…		…
94	C<http_request> returns a "cancellation guard" - you have to keep the	94	C<http_request> returns a "cancellation guard" - you have to keep the
95	object at least alive until the callback get called. If the object gets	95	object at least alive until the callback get called. If the object gets
96	destroyed before the callback is called, the request will be cancelled.	96	destroyed before the callback is called, the request will be cancelled.
97		97
98	The callback will be called with the response body data as first argument	98	The callback will be called with the response body data as first argument
99	(or C<undef> if an error occured), and a hash-ref with response headers as	99	(or C<undef> if an error occured), and a hash-ref with response headers
100	second argument.	100	(and trailers) as second argument.
101		101
102	All the headers in that hash are lowercased. In addition to the response	102	All the headers in that hash are lowercased. In addition to the response
103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the	104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	three parts of the HTTP Status-Line of the same name.	105	three parts of the HTTP Status-Line of the same name. If an error occurs
		106	during the body phase of a request, then the original C<Status> and
		107	C<Reason> values from the header are available as C<OrigStatus> and
		108	C<OrigReason>.
106		109
107	The pseudo-header C<URL> contains the actual URL (which can differ from	110	The pseudo-header C<URL> contains the actual URL (which can differ from
108	the requested URL when following redirects - for example, you might get	111	the requested URL when following redirects - for example, you might get
109	an error that your URL scheme is not supported even though your URL is a	112	an error that your URL scheme is not supported even though your URL is a
110	valid http URL because it redirected to an ftp URL, in which case you can	113	valid http URL because it redirected to an ftp URL, in which case you can
…		…
147	Whether to recurse requests or not, e.g. on redirects, authentication	150	Whether to recurse requests or not, e.g. on redirects, authentication
148	retries and so on, and how often to do so.	151	retries and so on, and how often to do so.
149		152
150	=item headers => hashref	153	=item headers => hashref
151		154
152	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
153	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
154	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
155	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
156	sent at all).	159	be sent at all).
157		160
158	=item timeout => $seconds	161	=item timeout => $seconds
159		162
160	The time-out to use for various stages - each connect attempt will reset	163	The time-out to use for various stages - each connect attempt will reset
161	the timeout, as will read or write activity, i.e. this is not an overall	164	the timeout, as will read or write activity, i.e. this is not an overall
…		…
171	C<$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
172	HTTPS.	175	HTTPS.
173		176
174	=item body => $string	177	=item body => $string
175		178
176	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
177	this module might offer more options).	180	this module might offer more options).
178		181
179	=item cookie_jar => $hash_ref	182	=item cookie_jar => $hash_ref
180		183
181	Passing this parameter enables (simplified) cookie-processing, loosely	184	Passing this parameter enables (simplified) cookie-processing, loosely
…		…
216	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)	219	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
217		220
218	In even rarer cases you want total control over how AnyEvent::HTTP	221	In even rarer cases you want total control over how AnyEvent::HTTP
219	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>	222	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
220	to do this, but you can provide your own C<tcp_connect> function -	223	to do this, but you can provide your own C<tcp_connect> function -
221	obviously, it has to follow the same calling conventions.	224	obviously, it has to follow the same calling conventions, except that it
		225	may always return a connection guard object.
222		226
223	There are probably lots of weird uses for this function, starting from	227	There are probably lots of weird uses for this function, starting from
224	tracing the hosts C<http_request> actually tries to connect, to (inexact	228	tracing the hosts C<http_request> actually tries to connect, to (inexact
225	but fast) host => IP address caching or even socks protocol support.	229	but fast) host => IP address caching or even socks protocol support.
226		230
…		…
236		240
237	This callback is useful, among other things, to quickly reject unwanted	241	This callback is useful, among other things, to quickly reject unwanted
238	content, which, if it is supposed to be rare, can be faster than first	242	content, which, if it is supposed to be rare, can be faster than first
239	doing a C<HEAD> request.	243	doing a C<HEAD> request.
240		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
241	Example: cancel the request unless the content-type is "text/html".	249	Example: cancel the request unless the content-type is "text/html".
242		250
243	on_header => sub {	251	on_header => sub {
244	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/	252	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
245	},	253	},
…		…
251	string instead of the body data.	259	string instead of the body data.
252		260
253	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),
254	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
255	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.
256		267
257	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
258	(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
259	be extracted, or when the body should be processed incrementally.	270	be extracted, or when the body should be processed incrementally.
260		271
…		…
286	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
287	that doesn't solve your problem in a better way.	298	that doesn't solve your problem in a better way.
288		299
289	=back	300	=back
290		301
291	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.
292		304
293	http_request GET => "http://www.nethype.de/", sub {	305	http_request GET => "http://www.nethype.de/", sub {
294	my ($body, $hdr) = @_;	306	my ($body, $hdr) = @_;
295	print "$body\n";	307	print "$body\n";
296	};	308	};
297		309
298	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
299	timeout of 30 seconds.	311	timeout of 30 seconds.
300		312
301	http_request	313	http_request
302	GET => "https://www.google.com",	314	GET => "https://www.google.com",
303	timeout => 30,	315	timeout => 30,
…		…
306	use Data::Dumper;	318	use Data::Dumper;
307	print Dumper $hdr;	319	print Dumper $hdr;
308	}	320	}
309	;	321	;
310		322
311	Example: make another simple HTTP GET request, but immediately try to	323	Example: do another simple HTTP GET request, but immediately try to
312	cancel it.	324	cancel it.
313		325
314	my $request = http_request GET => "http://www.nethype.de/", sub {	326	my $request = http_request GET => "http://www.nethype.de/", sub {
315	my ($body, $hdr) = @_;	327	my ($body, $hdr) = @_;
316	print "$body\n";	328	print "$body\n";
…		…
348	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	360	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
349		361
350	_slot_schedule $_[0];	362	_slot_schedule $_[0];
351	}	363	}
352		364
		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
353	our $qr_nlnl = qr{(?<![^\012])\015?\012};	390	our $qr_nlnl = qr{(?<![^\012])\015?\012};
354		391
355	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	392	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
356	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	393	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
357		394
…		…
376	my @pseudo = (URL => $url);	413	my @pseudo = (URL => $url);
377	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};	414	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
378		415
379	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	416	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
380		417
381	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })	418	return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
382	if $recurse < 0;	419	if $recurse < 0;
383		420
384	my $proxy = $arg{proxy} \|\| $PROXY;	421	my $proxy = $arg{proxy} \|\| $PROXY;
385	my $timeout = $arg{timeout} \|\| $TIMEOUT;	422	my $timeout = $arg{timeout} \|\| $TIMEOUT;
386		423
…		…
389		426
390	$uscheme = lc $uscheme;	427	$uscheme = lc $uscheme;
391		428
392	my $uport = $uscheme eq "http" ? 80	429	my $uport = $uscheme eq "http" ? 80
393	: $uscheme eq "https" ? 443	430	: $uscheme eq "https" ? 443
394	: 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" });
395		432
396	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	433	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
397	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });	434	or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
398		435
399	my $uhost = $1;	436	my $uhost = $1;
400	$uport = $2 if defined $2;	437	$uport = $2 if defined $2;
401		438
402	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"	439	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
…		…
451	} else {	488	} else {
452	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	489	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
453	}	490	}
454		491
455	# leave out fragment and query string, just a heuristic	492	# leave out fragment and query string, just a heuristic
456	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};	493	$hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
457	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};	494	$hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
458		495
459	$hdr{"content-length"} = length $arg{body}	496	$hdr{"content-length"} = length $arg{body}
460	if length $arg{body} \|\| $method ne "GET";	497	if length $arg{body} \|\| $method ne "GET";
461		498
		499	$hdr{connection} = "close TE"; #1.1
		500	$hdr{te} = "trailers" unless exists $hdr{te}; #1.1
		501
462	my %state = (connect_guard => 1);	502	my %state = (connect_guard => 1);
463		503
464	_get_slot $uhost, sub {	504	_get_slot $uhost, sub {
465	$state{slot_guard} = shift;	505	$state{slot_guard} = shift;
466		506
467	return unless $state{connect_guard};	507	return unless $state{connect_guard};
468		508
469	my $tcp_connect = $arg{tcp_connect}	509	my $connect_cb = sub {
470	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
471
472	$state{connect_guard} = $tcp_connect->(
473	$rhost,
474	$rport,
475	sub {
476	$state{fh} = shift	510	$state{fh} = shift
477	or do {	511	or do {
478	my $err = "$!";	512	my $err = "$!";
479	%state = ();	513	%state = ();
480	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });	514	return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
481	};	515	};
482		516
483	pop; # free memory, save a tree	517	pop; # free memory, save a tree
484		518
485	return unless delete $state{connect_guard};	519	return unless delete $state{connect_guard};
486		520
487	# get handle	521	# get handle
488	$state{handle} = new AnyEvent::Handle	522	$state{handle} = new AnyEvent::Handle
489	fh => $state{fh},	523	fh => $state{fh},
490	peername => $rhost,	524	peername => $rhost,
491	tls_ctx => $arg{tls_ctx},	525	tls_ctx => $arg{tls_ctx},
492	# these need to be reconfigured on keepalive handles	526	# these need to be reconfigured on keepalive handles
493	timeout => $timeout,	527	timeout => $timeout,
494	on_error => sub {	528	on_error => sub {
495	%state = ();	529	%state = ();
496	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });	530	$cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
497	},	531	},
498	on_eof => sub {	532	on_eof => sub {
499	%state = ();	533	%state = ();
500	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });	534	$cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
501	},	535	},
502	;	536	;
503		537
504	# limit the number of persistent connections	538	# limit the number of persistent connections
505	# keepalive not yet supported	539	# keepalive not yet supported
506	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	540	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
507	# ++$KA_COUNT{$_[1]};	541	# ++$KA_COUNT{$_[1]};
508	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {	542	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
509	# --$KA_COUNT{$_[1]}	543	# --$KA_COUNT{$_[1]}
510	# };	544	# };
511	# $hdr{connection} = "keep-alive";	545	# $hdr{connection} = "keep-alive";
512	# } else {
513	delete $hdr{connection};
514	# }	546	# }
515		547
516	$state{handle}->starttls ("connect") if $rscheme eq "https";	548	$state{handle}->starttls ("connect") if $rscheme eq "https";
517		549
518	# handle actual, non-tunneled, request	550	# handle actual, non-tunneled, request
519	my $handle_actual_request = sub {	551	my $handle_actual_request = sub {
520	$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};
521		553
522	# send request	554	# send request
523	$state{handle}->push_write (	555	$state{handle}->push_write (
524	"$method $rpath HTTP/1.0\015\012"	556	"$method $rpath HTTP/1.1\015\012"
525	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)	557	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
526	. "\015\012"	558	. "\015\012"
527	. (delete $arg{body})	559	. (delete $arg{body})
528	);	560	);
529		561
530	# return if error occured during push_write()	562	# return if error occured during push_write()
531	return unless %state;	563	return unless %state;
532		564
533	%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
534		566
535	# status line and headers	567	# status line and headers
536	$state{handle}->push_read (line => $qr_nlnl, sub {	568	$state{read_response} = sub {
537	for ("$_[1]") {	569	for ("$_[1]") {
538	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.
539		571
540	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc	572	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
541	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));	573	or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
542		574
		575	# 100 Continue handling
		576	# should not happen as we don't send expect: 100-continue,
		577	# but we handle it just in case.
		578	# since we send the request body regardless, if we get an error
		579	# we are out of-sync, which we currently do NOT handle correctly.
		580	return $state{handle}->push_read (line => $qr_nlnl, $state{read_response})
		581	if $2 eq 100;
		582
543	push @pseudo,	583	push @pseudo,
544	HTTPVersion => $1,	584	HTTPVersion => $1,
545	Status => $2,	585	Status => $2,
546	Reason => $3,	586	Reason => $3,
547	;	587	;
548		588
549	# things seen, not parsed:	589	my $hdr = parse_hdr
550	# p3pP="NON CUR OTPi OUR NOR UNI"
551
552	$hdr{lc $1} .= ",$2"
553	while /\G
554	([^:\000-\037]*):
555	[\011\040]*
556	((?: [^\012]+ \| \012[\011\040] )*)
557	\012
558	/gxc;
559
560	/\G$/
561	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));	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	$url =~ s/\/[^\/]*$//;
562	}	606	}
563		607
564	# remove the "," prefix we added to all headers above
565	substr $_, 0, 1, ""
566	for values %hdr;
567
568	# patch in all pseudo headers
569	%hdr = (%hdr, @pseudo);
570
571	# redirect handling
572	# microsoft and other shitheads don't give a shit for following standards,
573	# try to support some common forms of broken Location headers.
574	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
575	$hdr{location} =~ s/^\.\/+//;
576
577	my $url = "$rscheme://$uhost:$uport";
578
579	unless ($hdr{location} =~ s/^\///) {
580	$url .= $upath;
581	$url =~ s/\/[^\/]*$//;
582	}
583
584	$hdr{location} = "$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;
585	}	627	}
		628	}
586		629
		630	my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
587	my $redirect;	631	my $keepalive = pop;
588		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} = $_[2];
		639	}
		640
		641	# set-cookie processing
589	if ($recurse) {	642	if ($arg{cookie_jar}) {
590	my $status = $hdr{Status};	643	for ($hdr{"set-cookie"}) {
		644	# parse NAME=VALUE
		645	my @kv;
591		646
592	# industry standard is to redirect POST as GET for	647	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
593	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
594	# also, the UA should ask the user for 301 and 307 and POST,
595	# industry standard seems to be to simply follow.
596	# we go with the industry standard.
597	if ($status == 301 or $status == 302 or $status == 303) {
598	# HTTP/1.1 is unclear on how to mutate the method
599	$method = "GET" unless $method eq "HEAD";
600	$redirect = 1;	648	my $name = $1;
601	} elsif ($status == 307) {	649	my $value = $3;
		650
		651	unless ($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
602	$redirect = 1;	683	# store it
		684	$arg{cookie_jar}{version} = 1;
		685	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		686
		687	redo if /\G\s*,/gc;
603	}	688	}
604	}	689	}
605		690
606	my $finish = sub {
607	$state{handle}->destroy if $state{handle};
608	%state = ();
609
610	# set-cookie processing
611	if ($arg{cookie_jar}) {
612	for ($_[1]{"set-cookie"}) {
613	# parse NAME=VALUE
614	my @kv;
615
616	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
617	my $name = $1;
618	my $value = $3;
619
620	unless ($value) {
621	$value = $2;
622	$value =~ s/\\(.)/$1/gs;
623	}
624
625	push @kv, $name => $value;
626
627	last unless /\G\s*;/gc;
628	}
629
630	last unless @kv;
631
632	my $name = shift @kv;
633	my %kv = (value => shift @kv, @kv);
634
635	my $cdom;
636	my $cpath = (delete $kv{path}) \|\| "/";
637
638	if (exists $kv{domain}) {
639	$cdom = delete $kv{domain};
640
641	$cdom =~ s/^\.?/./; # make sure it starts with a "."
642
643	next if $cdom =~ /\.$/;
644
645	# this is not rfc-like and not netscape-like. go figure.
646	my $ndots = $cdom =~ y/.//;
647	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
648	} else {
649	$cdom = $uhost;
650	}
651
652	# store it
653	$arg{cookie_jar}{version} = 1;
654	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
655
656	redo if /\G\s*,/gc;
657	}
658	}
659
660	if ($redirect && exists $hdr{location}) {	691	if ($redirect && exists $hdr{location}) {
661	# we ignore any errors, as it is very common to receive	692	# we ignore any errors, as it is very common to receive
662	# Content-Length != 0 but no actual body	693	# Content-Length != 0 but no actual body
663	# we also access %hdr, as $_[1] might be an erro	694	# we also access %hdr, as $_[1] might be an erro
664	http_request (	695	http_request (
665	$method => $hdr{location},	696	$method => $hdr{location},
666	%arg,	697	%arg,
667	recurse => $recurse - 1,	698	recurse => $recurse - 1,
668	Redirect => \@_,	699	Redirect => [$_[0], \%hdr],
669	$cb);	700	$cb);
670	} else {
671	$cb->($_[0], $_[1]);
672	}
673	};
674
675	my $len = $hdr{"content-length"};
676
677	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
678	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
679	} elsif (
680	$hdr{Status} =~ /^(?:1..\|[23]04)$/
681	or $method eq "HEAD"
682	or (defined $len && !$len)
683	) {
684	# no body
685	$finish->("", \%hdr);
686	} else {	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	$finish->("", undef, undef, 1);
		717	} else {
687	# body handling, four different code paths	718	# body handling, many different code paths
688	# for want_body_handle, on_body (2x), normal (2x)	719	# - no body expected
689	# we might read too much here, but it does not matter yet (no pers. connections)	720	# - want_body_handle
		721	# - te chunked
		722	# - 2x length known (with or without on_body)
		723	# - 2x length not known (with or without on_body)
690	if (!$redirect && $arg{want_body_handle}) {	724	if (!$redirect && $arg{want_body_handle}) {
691	$_[0]->on_eof (undef);	725	$_[0]->on_eof (undef);
692	$_[0]->on_error (undef);	726	$_[0]->on_error (undef);
693	$_[0]->on_read (undef);	727	$_[0]->on_read (undef);
694		728
695	$finish->(delete $state{handle}, \%hdr);	729	$finish->(delete $state{handle});
696		730
697	} elsif ($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
698	$_[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 $1;
		743
699	if ($len) {	744	if ($len) {
700	$_[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
701	$_[0]->on_read (sub {	751	$_[0]->push_read (line => sub {
702	$len -= length $_[0]{rbuf};	752	length $_[1]
703		753	and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
704	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	754	$_[0]->push_read (line => $read_chunk);
705	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
706
707	$len > 0	755	});
708	or $finish->("", \%hdr);
709	});	756	});
710	} else {	757	} else {
711	$_[0]->on_eof (sub {	758	$hdr{"content-length"} \|\|= $cl;
712	$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	}
713	});	770	}
714	$_[0]->on_read (sub {	771
715	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	772	$finish->($body, undef, undef, 1);
716	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
717	});	773	});
718	}	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	});
719	} else {	792	} else {
720	$_[0]->on_eof (undef);	793	$_[0]->on_eof (sub {
721		794	$finish->("");
722	if ($len) {	795	});
723	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
724	$_[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 {
725	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)	807	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
726	if $len <= length $_[0]{rbuf};	808	if $len <= length $_[0]{rbuf};
727	});	809	});
728	} else {	810	} else {
729	$_[0]->on_error (sub {	811	$_[0]->on_error (sub {
730	($! == Errno::EPIPE \|\| !$!)	812	($! == Errno::EPIPE \|\| !$!)
731	? $finish->(delete $_[0]{rbuf}, \%hdr)	813	? $finish->(delete $_[0]{rbuf})
732	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });	814	: $finish->(undef, 599 => $_[2]);
733	});	815	});
734	$_[0]->on_read (sub { });	816	$_[0]->on_read (sub { });
735	}
736	}	817	}
737	}	818	}
738	});	819	}
739	};	820	};
740		821
		822	$state{handle}->push_read (line => $qr_nlnl, $state{read_response});
		823	};
		824
741	# now handle proxy-CONNECT method	825	# now handle proxy-CONNECT method
742	if ($proxy && $uscheme eq "https") {	826	if ($proxy && $uscheme eq "https") {
743	# oh dear, we have to wrap it into a connect request	827	# oh dear, we have to wrap it into a connect request
744		828
745	# maybe re-use $uauthority with patched port?	829	# maybe re-use $uauthority with patched port?
746	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	830	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
747	$state{handle}->push_read (line => $qr_nlnl, sub {	831	$state{handle}->push_read (line => $qr_nlnl, sub {
748	$_[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
749	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])" }));
750		834
751	if ($2 == 200) {	835	if ($2 == 200) {
752	$rpath = $upath;	836	$rpath = $upath;
753	&$handle_actual_request;	837	&$handle_actual_request;
754	} else {	838	} else {
755	%state = ();	839	%state = ();
756	$cb->(undef, { Status => $2, Reason => $3, @pseudo });	840	$cb->(undef, { @pseudo, Status => $2, Reason => $3 });
757	}
758	});	841	}
		842	});
759	} else {	843	} else {
760	&$handle_actual_request;	844	&$handle_actual_request;
761	}
762
763	},	845	}
764	$arg{on_prepare} \|\| sub { $timeout }
765	);	846	};
		847
		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
766	};	853	};
767		854
768	defined wantarray && AnyEvent::Util::guard { %state = () }	855	defined wantarray && AnyEvent::Util::guard { %state = () }
769	}	856	}
770		857
…		…
805	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
806	otherwise.	893	otherwise.
807		894
808	To clear an already-set proxy, use C<undef>.	895	To clear an already-set proxy, use C<undef>.
809		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
810	=item $AnyEvent::HTTP::MAX_RECURSE	907	=item $AnyEvent::HTTP::MAX_RECURSE
811		908
812	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>).
813		910
814	=item $AnyEvent::HTTP::USERAGENT	911	=item $AnyEvent::HTTP::USERAGENT
…		…
832	connections. This number of can be useful for load-leveling.	929	connections. This number of can be useful for load-leveling.
833		930
834	=back	931	=back
835		932
836	=cut	933	=cut
		934
		935	our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
		936	our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
		937
		938	sub format_date($) {
		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, $_, $y);
		972	}
		973	}
		974
		975	undef
		976	}
837		977
838	sub set_proxy($) {	978	sub set_proxy($) {
839	if (length $_[0]) {	979	if (length $_[0]) {
840	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix	980	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
841	or Carp::croak "$_[0]: invalid proxy URL";	981	or Carp::croak "$_[0]: invalid proxy URL";
…		…
848	# initialise proxy from environment	988	# initialise proxy from environment
849	eval {	989	eval {
850	set_proxy $ENV{http_proxy};	990	set_proxy $ENV{http_proxy};
851	};	991	};
852		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
853	=head1 SEE ALSO	1049	=head1 SEE ALSO
854		1050
855	L<AnyEvent>.	1051	L<AnyEvent>.
856		1052
857	=head1 AUTHOR	1053	=head1 AUTHOR

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs. Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC vs.
Revision 1.68 by root, Fri Dec 31 19:22:18 2010 UTC