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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.41 by root, Sun Jul 5 23:50:59 2009 UTC vs.
Revision 1.55 by root, Wed Jun 16 19:17:30 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 4.452 ();	46	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Socket ();	48	use AnyEvent::Socket ();
49	use AnyEvent::Handle ();	49	use AnyEvent::Handle ();
50		50
51	use base Exporter::;	51	use base Exporter::;
52		52
53	our $VERSION = '1.12';	53	our $VERSION = '1.45';
54		54
55	our @EXPORT = qw(http_get http_post http_head http_request);	55	our @EXPORT = qw(http_get http_post http_head http_request);
56		56
57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	58	our $MAX_RECURSE = 10;
59	our $MAX_PERSISTENT = 8;	59	our $MAX_PERSISTENT = 8;
60	our $PERSISTENT_TIMEOUT = 2;	60	our $PERSISTENT_TIMEOUT = 2;
61	our $TIMEOUT = 300;	61	our $TIMEOUT = 300;
62		62
63	# changing these is evil	63	# changing these is evil
64	our $MAX_PERSISTENT_PER_HOST = 2;	64	our $MAX_PERSISTENT_PER_HOST = 0;
65	our $MAX_PER_HOST = 4;	65	our $MAX_PER_HOST = 4;
66		66
67	our $PROXY;	67	our $PROXY;
68	our $ACTIVE = 0;	68	our $ACTIVE = 0;
69		69
…		…
94	When called in void context, nothing is returned. In other contexts,	94	When called in void context, nothing is returned. In other contexts,
95	C<http_request> returns a "cancellation guard" - you have to keep the	95	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	96	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.	97	destroyed before the callbakc is called, the request will be cancelled.
98		98
99	The callback will be called with the response data as first argument	99	The callback will be called with the response body data as first argument
100	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if an error occured), and a hash-ref with response headers as
101	response headers as second argument.	101	second argument.
102		102
103	All the headers in that hash are lowercased. In addition to the response	103	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>	104	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		105	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	106	three parts of the HTTP Status-Line of the same name.
		107
106	pseudo-header C<URL> contains the original URL (which can differ from the	108	The pseudo-header C<URL> contains the actual URL (which can differ from
107	requested URL when following redirects).	109	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
		111	valid http URL because it redirected to an ftp URL, in which case you can
		112	look at the URL pseudo header).
		113
		114	The pseudo-header C<Redirect> only exists when the request was a result
		115	of an internal redirect. In that case it is an array reference with
		116	the C<($data, $headers)> from the redirect response. Note that this
		117	response could in turn be the result of a redirect itself, and C<<
		118	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		119	response, and so on.
108		120
109	If the server sends a header multiple times, then their contents will be	121	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.	122	joined together with a comma (C<,>), as per the HTTP spec.
111		123
112	If an internal error occurs, such as not being able to resolve a hostname,	124	If an internal error occurs, such as not being able to resolve a hostname,
…		…
138		150
139	=item headers => hashref	151	=item headers => hashref
140		152
141	The request headers to use. Currently, C<http_request> may provide its	153	The request headers to use. Currently, C<http_request> may provide its
142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	154	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
143	and will provide defaults for C<User-Agent:> and C<Referer:>.	155	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be
		156	suppressed by using C<undef> for these headers in which case they won't be
		157	sent at all).
144		158
145	=item timeout => $seconds	159	=item timeout => $seconds
146		160
147	The time-out to use for various stages - each connect attempt will reset	161	The time-out to use for various stages - each connect attempt will reset
148	the timeout, as will read or write activity. Default timeout is 5 minutes.	162	the timeout, as will read or write activity, i.e. this is not an overall
		163	timeout.
		164
		165	Default timeout is 5 minutes.
149		166
150	=item proxy => [$host, $port[, $scheme]] or undef	167	=item proxy => [$host, $port[, $scheme]] or undef
151		168
152	Use the given http proxy for all requests. If not specified, then the	169	Use the given http proxy for all requests. If not specified, then the
153	default proxy (as specified by C<$ENV{http_proxy}>) is used.	170	default proxy (as specified by C<$ENV{http_proxy}>) is used.
154		171
155	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	172	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
156	HTTPS.	173	HTTPS.
157		174
158	=item body => $string	175	=item body => $string
159		176
160	The request body, usually empty. Will be-sent as-is (future versions of	177	The request body, usually empty. Will be-sent as-is (future versions of
…		…
186	verification) TLS context.	203	verification) TLS context.
187		204
188	The default for this option is C<low>, which could be interpreted as "give	205	The default for this option is C<low>, which could be interpreted as "give
189	me the page, no matter what".	206	me the page, no matter what".
190		207
		208	=item on_prepare => $callback->($fh)
		209
		210	In rare cases you need to "tune" the socket before it is used to
		211	connect (for exmaple, to bind it on a given IP address). This parameter
		212	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
		214	timeout). See the description for the C<$prepare_cb> argument of
		215	C<AnyEvent::Socket::tcp_connect> for details.
		216
191	=item on_header => $callback->($hdr)	217	=item on_header => $callback->($headers)
192		218
193	When specified, this callback will be called with the header hash as soon	219	When specified, this callback will be called with the header hash as soon
194	as headers have been successfully received from the remote server (not on	220	as headers have been successfully received from the remote server (not on
195	locally-generated errors).	221	locally-generated errors).
196		222
…		…
200		226
201	This callback is useful, among other things, to quickly reject unwanted	227	This callback is useful, among other things, to quickly reject unwanted
202	content, which, if it is supposed to be rare, can be faster than first	228	content, which, if it is supposed to be rare, can be faster than first
203	doing a C<HEAD> request.	229	doing a C<HEAD> request.
204		230
		231	Example: cancel the request unless the content-type is "text/html".
		232
		233	on_header => sub {
		234	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		235	},
		236
205	=item on_body => $callback->($data, $hdr)	237	=item on_body => $callback->($partial_body, $headers)
206		238
207	When specified, all body data will be "filtered" through this callback.	239	When specified, all body data will be passed to this callback instead of
		240	to the completion callback. The completion callback will get the empty
		241	string instead of the body data.
208		242
209	The callback will incrementally receive body data, and is supposed to	243	It has to return either true (in which case AnyEvent::HTTP will continue),
210	return it or a modified version of it (empty strings are valid returns).	244	or false, in which case AnyEvent::HTTP will cancel the download (and call
		245	the completion callback with an error code of C<598>).
211		246
212	If the callback returns C<undef>, then the request will be cancelled.	247	This callback is useful when the data is too large to be held in memory
213		248	(so the callback writes it to a file) or when only some information should
214	This callback is useful when you want to do some processing on the data,	249	be extracted, or when the body should be processed incrementally.
215	or the data is too large to be held in memory (so the callback writes it
216	to a file and returns the empty string) and so on.
217		250
218	It is usually preferred over doing your own body handling via	251	It is usually preferred over doing your own body handling via
219	C<want_body_handle>.	252	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		253	only used to create a connection, C<want_body_handle> is the better
		254	alternative, as it allows you to install your own event handler, reducing
		255	resource usage.
220		256
221	=item want_body_handle => $enable	257	=item want_body_handle => $enable
222		258
223	When enabled (default is disabled), the behaviour of AnyEvent::HTTP	259	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
224	changes considerably: after parsing the headers, and instead of	260	changes considerably: after parsing the headers, and instead of
…		…
236	This is useful with some push-type services, where, after the initial	272	This is useful with some push-type services, where, after the initial
237	headers, an interactive protocol is used (typical example would be the	273	headers, an interactive protocol is used (typical example would be the
238	push-style twitter API which starts a JSON/XML stream).	274	push-style twitter API which starts a JSON/XML stream).
239		275
240	If you think you need this, first have a look at C<on_body>, to see if	276	If you think you need this, first have a look at C<on_body>, to see if
241	that doesn'T solve your problem in a better way.	277	that doesn't solve your problem in a better way.
242		278
243	=back	279	=back
244		280
245	Example: make a simple HTTP GET request for http://www.nethype.de/	281	Example: make a simple HTTP GET request for http://www.nethype.de/
246		282
…		…
302	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	338	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
303		339
304	_slot_schedule $_[0];	340	_slot_schedule $_[0];
305	}	341	}
306		342
307	our $qr_nl = qr<\015?\012>;	343	our $qr_nl = qr{\015?\012};
308	our $qr_nlnl = qr<\015?\012\015?\012>;	344	our $qr_nlnl = qr{(?<![^\012])\015?\012};
309		345
310	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	346	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
311	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	347	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
312		348
313	sub http_request($$@) {	349	sub http_request($$@) {
…		…
325	while (my ($k, $v) = each %$hdr) {	361	while (my ($k, $v) = each %$hdr) {
326	$hdr{lc $k} = $v;	362	$hdr{lc $k} = $v;
327	}	363	}
328	}	364	}
329		365
		366	# pseudo headers for all subsequent responses
		367	my @pseudo = (URL => $url);
		368	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		369
330	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	370	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
331		371
332	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	372	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })
333	if $recurse < 0;	373	if $recurse < 0;
334		374
335	my $proxy = $arg{proxy} \|\| $PROXY;	375	my $proxy = $arg{proxy} \|\| $PROXY;
336	my $timeout = $arg{timeout} \|\| $TIMEOUT;	376	my $timeout = $arg{timeout} \|\| $TIMEOUT;
337		377
…		…
340		380
341	$uscheme = lc $uscheme;	381	$uscheme = lc $uscheme;
342		382
343	my $uport = $uscheme eq "http" ? 80	383	my $uport = $uscheme eq "http" ? 80
344	: $uscheme eq "https" ? 443	384	: $uscheme eq "https" ? 443
345	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });	385	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });
346		386
347	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	387	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
348	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	388	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });
349		389
350	my $uhost = $1;	390	my $uhost = $1;
351	$uport = $2 if defined $2;	391	$uport = $2 if defined $2;
		392
		393	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		394	unless exists $hdr{host};
352		395
353	$uhost =~ s/^\[(.*)\]$/$1/;	396	$uhost =~ s/^\[(.*)\]$/$1/;
354	$upath .= "?$query" if length $query;	397	$upath .= "?$query" if length $query;
355		398
356	$upath =~ s%^/?%/%;	399	$upath =~ s%^/?%/%;
…		…
389	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	432	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
390		433
391	if ($proxy) {	434	if ($proxy) {
392	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	435	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
393		436
		437	$rscheme = "http" unless defined $rscheme;
		438
394	# don't support https requests over https-proxy transport,	439	# don't support https requests over https-proxy transport,
395	# can't be done with tls as spec'ed, unless you double-encrypt.	440	# can't be done with tls as spec'ed, unless you double-encrypt.
396	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	441	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
397	} else {	442	} else {
398	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	443	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
399	}	444	}
400		445
401	$hdr{"user-agent"} \|\|= $USERAGENT;	446	# leave out fragment and query string, just a heuristic
402	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic	447	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		448	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};
403		449
404	$hdr{host} = "$uhost:$uport";
405	$hdr{"content-length"} = length $arg{body};	450	$hdr{"content-length"} = length $arg{body}
		451	if length $arg{body} \|\| $method ne "GET";
406		452
407	my %state = (connect_guard => 1);	453	my %state = (connect_guard => 1);
408		454
409	_get_slot $uhost, sub {	455	_get_slot $uhost, sub {
410	$state{slot_guard} = shift;	456	$state{slot_guard} = shift;
411		457
412	return unless $state{connect_guard};	458	return unless $state{connect_guard};
413		459
414	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	460	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
415	$state{fh} = shift	461	$state{fh} = shift
		462	or do {
		463	my $err = "$!";
		464	%state = ();
416	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));	465	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });
		466	};
		467
417	pop; # free memory, save a tree	468	pop; # free memory, save a tree
418		469
419	return unless delete $state{connect_guard};	470	return unless delete $state{connect_guard};
420		471
421	# get handle	472	# get handle
…		…
438	}	489	}
439		490
440	# (re-)configure handle	491	# (re-)configure handle
441	$state{handle}->on_error (sub {	492	$state{handle}->on_error (sub {
442	%state = ();	493	%state = ();
443	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });	494	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });
444	});	495	});
445	$state{handle}->on_eof (sub {	496	$state{handle}->on_eof (sub {
446	%state = ();	497	%state = ();
447	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });	498	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });
448	});	499	});
449		500
450	$state{handle}->starttls ("connect") if $rscheme eq "https";	501	$state{handle}->starttls ("connect") if $rscheme eq "https";
451		502
452	# handle actual, non-tunneled, request	503	# handle actual, non-tunneled, request
…		…
454	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	505	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
455		506
456	# send request	507	# send request
457	$state{handle}->push_write (	508	$state{handle}->push_write (
458	"$method $rpath HTTP/1.0\015\012"	509	"$method $rpath HTTP/1.0\015\012"
459	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	510	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
460	. "\015\012"	511	. "\015\012"
461	. (delete $arg{body})	512	. (delete $arg{body})
462	);	513	);
463		514
		515	# return if error occured during push_write()
		516	return unless %state;
		517
464	%hdr = (); # reduce memory usage, save a kitten	518	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
465		519
466	# status line	520	# status line
467	$state{handle}->push_read (line => $qr_nl, sub {	521	$state{handle}->push_read (line => $qr_nl, sub {
468	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	522	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
469	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));	523	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", @pseudo }));
470		524
471	my %hdr = ( # response headers	525	push @pseudo,
472	HTTPVersion => ",$1",	526	HTTPVersion => $1,
473	Status => ",$2",	527	Status => $2,
474	Reason => ",$3",	528	Reason => $3,
475	URL => ",$url"
476	);	529	;
477		530
478	# headers, could be optimized a bit	531	# headers, could be optimized a bit
479	$state{handle}->unshift_read (line => $qr_nlnl, sub {	532	$state{handle}->unshift_read (line => $qr_nlnl, sub {
480	for ("$_[1]\012") {	533	for ("$_[1]") {
481	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	534	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
482		535
483	# things seen, not parsed:	536	# things seen, not parsed:
484	# p3pP="NON CUR OTPi OUR NOR UNI"	537	# p3pP="NON CUR OTPi OUR NOR UNI"
485		538
486	$hdr{lc $1} .= ",$2"	539	$hdr{lc $1} .= ",$2"
487	while /\G	540	while /\G
488	([^:\000-\037]+):	541	([^:\000-\037]*):
489	[\011\040]*	542	[\011\040]*
490	((?: [^\012]+ \| \012[\011\040] )*)	543	((?: [^\012]+ \| \012[\011\040] )*)
491	\012	544	\012
492	/gxc;	545	/gxc;
493		546
494	/\G$/	547	/\G$/
495	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));	548	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));
496	}	549	}
497		550
		551	# remove the "," prefix we added to all headers above
498	substr $_, 0, 1, ""	552	substr $_, 0, 1, ""
499	for values %hdr;	553	for values %hdr;
		554
		555	# patch in all pseudo headers
		556	%hdr = (%hdr, @pseudo);
500		557
501	# redirect handling	558	# redirect handling
502	# microsoft and other shitheads don't give a shit for following standards,	559	# microsoft and other shitheads don't give a shit for following standards,
503	# try to support some common forms of broken Location headers.	560	# try to support some common forms of broken Location headers.
504	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	561	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
…		…
515	}	572	}
516		573
517	my $redirect;	574	my $redirect;
518		575
519	if ($recurse) {	576	if ($recurse) {
		577	my $status = $hdr{Status};
		578
520	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {	579	if (($status == 301 \|\| $status == 302) && $method ne "POST") {
521	# apparently, mozilla et al. just change POST to GET here	580	# apparently, mozilla et al. just change POST to GET here
522	# more research is needed before we do the same	581	# more research is needed before we do the same
523	$redirect = 1;	582	$redirect = 1;
524	} elsif ($hdr{Status} == 303) {	583	} elsif ($status == 303) {
525	# even http/1.1 is unclear on how to mutate the method	584	# even http/1.1 is unclear on how to mutate the method
526	$method = "GET" unless $method eq "HEAD";	585	$method = "GET" unless $method eq "HEAD";
527	$redirect = 1;	586	$redirect = 1;
528	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {	587	} elsif ($status == 307 && $method =~ /^(?:GET\|HEAD)$/) {
529	$redirect = 1;	588	$redirect = 1;
530	}	589	}
531	}	590	}
532		591
533	my $finish = sub {	592	my $finish = sub {
…		…
582		641
583	redo if /\G\s*,/gc;	642	redo if /\G\s*,/gc;
584	}	643	}
585	}	644	}
586		645
587	if ($redirect) {	646	if ($redirect && exists $hdr{location}) {
588	# we ignore any errors, as it is very common to receive	647	# we ignore any errors, as it is very common to receive
589	# Content-Length != 0 but no actual body	648	# Content-Length != 0 but no actual body
590	# we also access %hdr, as $_[1] might be an erro	649	# we also access %hdr, as $_[1] might be an erro
591	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);	650	http_request (
		651	$method => $hdr{location},
		652	%arg,
		653	recurse => $recurse - 1,
		654	Redirect => \@_,
		655	$cb);
592	} else {	656	} else {
593	$cb->($_[0], $_[1]);	657	$cb->($_[0], $_[1]);
594	}	658	}
595	};	659	};
596		660
597	my $len = $hdr{"content-length"};	661	my $len = $hdr{"content-length"};
598		662
599	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {	663	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
600	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });	664	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
601	} elsif (	665	} elsif (
602	$hdr{Status} =~ /^(?:1..\|204\|304)$/	666	$hdr{Status} =~ /^(?:1..\|[23]04)$/
603	or $method eq "HEAD"	667	or $method eq "HEAD"
604	or (defined $len && !$len)	668	or (defined $len && !$len)
605	) {	669	) {
606	# no body	670	# no body
607	$finish->("", \%hdr);	671	$finish->("", \%hdr);
…		…
615	$_[0]->on_read (undef);	679	$_[0]->on_read (undef);
616		680
617	$finish->(delete $state{handle}, \%hdr);	681	$finish->(delete $state{handle}, \%hdr);
618		682
619	} elsif ($arg{on_body}) {	683	} elsif ($arg{on_body}) {
620	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });	684	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
621	if ($len) {	685	if ($len) {
622	$_[0]->on_eof (undef);	686	$_[0]->on_eof (undef);
623	$_[0]->on_read (sub {	687	$_[0]->on_read (sub {
624	$len -= length $_[0]{rbuf};	688	$len -= length $_[0]{rbuf};
625		689
626	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	690	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
627	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });	691	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
628		692
629	$len > 0	693	$len > 0
630	or $finish->("", \%hdr);	694	or $finish->("", \%hdr);
631	});	695	});
632	} else {	696	} else {
633	$_[0]->on_eof (sub {	697	$_[0]->on_eof (sub {
634	$finish->("", \%hdr);	698	$finish->("", \%hdr);
635	});	699	});
636	$_[0]->on_read (sub {	700	$_[0]->on_read (sub {
637	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	701	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
638	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });	702	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
639	});	703	});
640	}	704	}
641	} else {	705	} else {
642	$_[0]->on_eof (undef);	706	$_[0]->on_eof (undef);
643		707
644	if ($len) {	708	if ($len) {
645	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });	709	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
646	$_[0]->on_read (sub {	710	$_[0]->on_read (sub {
647	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)	711	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
648	if $len <= length $_[0]{rbuf};	712	if $len <= length $_[0]{rbuf};
649	});	713	});
650	} else {	714	} else {
651	$_[0]->on_error (sub {	715	$_[0]->on_error (sub {
652	$! == Errno::EPIPE	716	$! == Errno::EPIPE \|\| !$!
653	? $finish->(delete $_[0]{rbuf}, \%hdr)	717	? $finish->(delete $_[0]{rbuf}, \%hdr)
654	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });	718	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
655	});	719	});
656	$_[0]->on_read (sub { });	720	$_[0]->on_read (sub { });
657	}	721	}
658	}	722	}
659	}	723	}
…		…
667		731
668	# maybe re-use $uauthority with patched port?	732	# maybe re-use $uauthority with patched port?
669	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	733	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
670	$state{handle}->push_read (line => $qr_nlnl, sub {	734	$state{handle}->push_read (line => $qr_nlnl, sub {
671	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	735	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
672	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	736	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));
673		737
674	if ($2 == 200) {	738	if ($2 == 200) {
675	$rpath = $upath;	739	$rpath = $upath;
676	&$handle_actual_request;	740	&$handle_actual_request;
677	} else {	741	} else {
678	%state = ();	742	%state = ();
679	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	743	$cb->(undef, { Status => $2, Reason => $3, @pseudo });
680	}	744	}
681	});	745	});
682	} else {	746	} else {
683	&$handle_actual_request;	747	&$handle_actual_request;
684	}	748	}
685		749
686	}, sub {	750	}, $arg{on_prepare} \|\| sub { $timeout };
687	$timeout
688	};
689	};	751	};
690		752
691	defined wantarray && AnyEvent::Util::guard { %state = () }	753	defined wantarray && AnyEvent::Util::guard { %state = () }
692	}	754	}
693		755
…		…
707	&http_request	769	&http_request
708	}	770	}
709		771
710	=back	772	=back
711		773
		774	=head2 DNS CACHING
		775
		776	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		777	the actual connection, which in turn uses AnyEvent::DNS to resolve
		778	hostnames. The latter is a simple stub resolver and does no caching
		779	on its own. If you want DNS caching, you currently have to provide
		780	your own default resolver (by storing a suitable resolver object in
		781	C<$AnyEvent::DNS::RESOLVER>).
		782
712	=head2 GLOBAL FUNCTIONS AND VARIABLES	783	=head2 GLOBAL FUNCTIONS AND VARIABLES
713		784
714	=over 4	785	=over 4
715		786
716	=item AnyEvent::HTTP::set_proxy "proxy-url"	787	=item AnyEvent::HTTP::set_proxy "proxy-url"
717		788
718	Sets the default proxy server to use. The proxy-url must begin with a	789	Sets the default proxy server to use. The proxy-url must begin with a
719	string of the form C<http://host:port> (optionally C<https:...>).	790	string of the form C<http://host:port> (optionally C<https:...>), croaks
		791	otherwise.
		792
		793	To clear an already-set proxy, use C<undef>.
720		794
721	=item $AnyEvent::HTTP::MAX_RECURSE	795	=item $AnyEvent::HTTP::MAX_RECURSE
722		796
723	The default value for the C<recurse> request parameter (default: C<10>).	797	The default value for the C<recurse> request parameter (default: C<10>).
724		798
725	=item $AnyEvent::HTTP::USERAGENT	799	=item $AnyEvent::HTTP::USERAGENT
726		800
727	The default value for the C<User-Agent> header (the default is	801	The default value for the C<User-Agent> header (the default is
728	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	802	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
729		803
730	=item $AnyEvent::HTTP::MAX_PERSISTENT	804	=item $AnyEvent::HTTP::MAX_PER_HOST
731		805
732	The maximum number of persistent connections to keep open (default: 8).	806	The maximum number of concurrent connections to the same host (identified
		807	by the hostname). If the limit is exceeded, then the additional requests
		808	are queued until previous connections are closed.
733		809
734	Not implemented currently.	810	The default value for this is C<4>, and it is highly advisable to not
735		811	increase it.
736	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
737
738	The maximum time to cache a persistent connection, in seconds (default: 2).
739
740	Not implemented currently.
741		812
742	=item $AnyEvent::HTTP::ACTIVE	813	=item $AnyEvent::HTTP::ACTIVE
743		814
744	The number of active connections. This is not the number of currently	815	The number of active connections. This is not the number of currently
745	running requests, but the number of currently open and non-idle TCP	816	running requests, but the number of currently open and non-idle TCP
…		…
748	=back	819	=back
749		820
750	=cut	821	=cut
751		822
752	sub set_proxy($) {	823	sub set_proxy($) {
		824	if (length $_[0]) {
753	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	825	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		826	or Carp::croak "$_[0]: invalid proxy URL";
		827	$PROXY = [$2, $3 \|\| 3128, $1]
		828	} else {
		829	undef $PROXY;
		830	}
754	}	831	}
755		832
756	# initialise proxy from environment	833	# initialise proxy from environment
		834	eval {
757	set_proxy $ENV{http_proxy};	835	set_proxy $ENV{http_proxy};
		836	};
758		837
759	=head1 SEE ALSO	838	=head1 SEE ALSO
760		839
761	L<AnyEvent>.	840	L<AnyEvent>.
762		841

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.41 by root, Sun Jul 5 23:50:59 2009 UTC vs. Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.41 by root, Sun Jul 5 23:50:59 2009 UTC vs.
Revision 1.55 by root, Wed Jun 16 19:17:30 2010 UTC