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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC vs.
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC

…		…
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Errno ();	44	use Errno ();
45		45
46	use AnyEvent 4.8 ();	46	use AnyEvent 5.0 ();
47	use AnyEvent::Util ();	47	use AnyEvent::Util ();
48	use AnyEvent::Socket ();
49	use AnyEvent::Handle ();	48	use AnyEvent::Handle ();
50		49
51	use base Exporter::;	50	use base Exporter::;
52		51
53	our $VERSION = '1.4';	52	our $VERSION = '1.46';
54		53
55	our @EXPORT = qw(http_get http_post http_head http_request);	54	our @EXPORT = qw(http_get http_post http_head http_request);
56		55
57	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	56	our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58	our $MAX_RECURSE = 10;	57	our $MAX_RECURSE = 10;
…		…
92	must be an absolute http or https URL.	91	must be an absolute http or https URL.
93		92
94	When called in void context, nothing is returned. In other contexts,	93	When called in void context, nothing is returned. In other contexts,
95	C<http_request> returns a "cancellation guard" - you have to keep the	94	C<http_request> returns a "cancellation guard" - you have to keep the
96	object at least alive until the callback get called. If the object gets	95	object at least alive until the callback get called. If the object gets
97	destroyed before the callbakc is called, the request will be cancelled.	96	destroyed before the callback is called, the request will be cancelled.
98		97
99	The callback will be called with the response body data as first argument	98	The callback will be called with the response body data as first argument
100	(or C<undef> if an error occured), and a hash-ref with response headers as	99	(or C<undef> if an error occured), and a hash-ref with response headers as
101	second argument.	100	second argument.
102		101
103	All the headers in that hash are lowercased. In addition to the response	102	All the headers in that hash are lowercased. In addition to the response
104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>	103	headers, the "pseudo-headers" (uppercase to avoid clashing with possible
		104	response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105	contain the three parts of the HTTP Status-Line of the same name. The	105	three parts of the HTTP Status-Line of the same name.
		106
106	pseudo-header C<URL> contains the original URL (which can differ from the	107	The pseudo-header C<URL> contains the actual URL (which can differ from
107	requested URL when following redirects).	108	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
		110	valid http URL because it redirected to an ftp URL, in which case you can
		111	look at the URL pseudo header).
		112
		113	The pseudo-header C<Redirect> only exists when the request was a result
		114	of an internal redirect. In that case it is an array reference with
		115	the C<($data, $headers)> from the redirect response. Note that this
		116	response could in turn be the result of a redirect itself, and C<<
		117	$headers->{Redirect}[1]{Redirect} >> will then contain the original
		118	response, and so on.
108		119
109	If the server sends a header multiple times, then their contents will be	120	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.	121	joined together with a comma (C<,>), as per the HTTP spec.
111		122
112	If an internal error occurs, such as not being able to resolve a hostname,	123	If an internal error occurs, such as not being able to resolve a hostname,
…		…
138		149
139	=item headers => hashref	150	=item headers => hashref
140		151
141	The request headers to use. Currently, C<http_request> may provide its	152	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	153	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
143	and will provide defaults for C<User-Agent:> and C<Referer:>.	154	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be
		155	suppressed by using C<undef> for these headers in which case they won't be
		156	sent at all).
144		157
145	=item timeout => $seconds	158	=item timeout => $seconds
146		159
147	The time-out to use for various stages - each connect attempt will reset	160	The time-out to use for various stages - each connect attempt will reset
148	the timeout, as will read or write activity. Default timeout is 5 minutes.	161	the timeout, as will read or write activity, i.e. this is not an overall
		162	timeout.
		163
		164	Default timeout is 5 minutes.
149		165
150	=item proxy => [$host, $port[, $scheme]] or undef	166	=item proxy => [$host, $port[, $scheme]] or undef
151		167
152	Use the given http proxy for all requests. If not specified, then the	168	Use the given http proxy for all requests. If not specified, then the
153	default proxy (as specified by C<$ENV{http_proxy}>) is used.	169	default proxy (as specified by C<$ENV{http_proxy}>) is used.
154		170
155	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	171	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
156	HTTPS.	172	HTTPS.
157		173
158	=item body => $string	174	=item body => $string
159		175
160	The request body, usually empty. Will be-sent as-is (future versions of	176	The request body, usually empty. Will be-sent as-is (future versions of
…		…
186	verification) TLS context.	202	verification) TLS context.
187		203
188	The default for this option is C<low>, which could be interpreted as "give	204	The default for this option is C<low>, which could be interpreted as "give
189	me the page, no matter what".	205	me the page, no matter what".
190		206
		207	=item on_prepare => $callback->($fh)
		208
		209	In rare cases you need to "tune" the socket before it is used to
		210	connect (for exmaple, to bind it on a given IP address). This parameter
		211	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		212	and behaves exactly the same way (e.g. it has to provide a
		213	timeout). See the description for the C<$prepare_cb> argument of
		214	C<AnyEvent::Socket::tcp_connect> for details.
		215
		216	=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
		217
		218	In even rarer cases you want total control over how AnyEvent::HTTP
		219	establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
		220	to do this, but you can provide your own C<tcp_connect> function -
		221	obviously, it has to follow the same calling conventions.
		222
		223	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
		225	but fast) host => IP address caching or even socks protocol support.
		226
191	=item on_header => $callback->($headers)	227	=item on_header => $callback->($headers)
192		228
193	When specified, this callback will be called with the header hash as soon	229	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	230	as headers have been successfully received from the remote server (not on
195	locally-generated errors).	231	locally-generated errors).
…		…
221	This callback is useful when the data is too large to be held in memory	257	This callback is useful when the data is too large to be held in memory
222	(so the callback writes it to a file) or when only some information should	258	(so the callback writes it to a file) or when only some information should
223	be extracted, or when the body should be processed incrementally.	259	be extracted, or when the body should be processed incrementally.
224		260
225	It is usually preferred over doing your own body handling via	261	It is usually preferred over doing your own body handling via
226	C<want_body_handle>.	262	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		263	only used to create a connection, C<want_body_handle> is the better
		264	alternative, as it allows you to install your own event handler, reducing
		265	resource usage.
227		266
228	=item want_body_handle => $enable	267	=item want_body_handle => $enable
229		268
230	When enabled (default is disabled), the behaviour of AnyEvent::HTTP	269	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
231	changes considerably: after parsing the headers, and instead of	270	changes considerably: after parsing the headers, and instead of
…		…
243	This is useful with some push-type services, where, after the initial	282	This is useful with some push-type services, where, after the initial
244	headers, an interactive protocol is used (typical example would be the	283	headers, an interactive protocol is used (typical example would be the
245	push-style twitter API which starts a JSON/XML stream).	284	push-style twitter API which starts a JSON/XML stream).
246		285
247	If you think you need this, first have a look at C<on_body>, to see if	286	If you think you need this, first have a look at C<on_body>, to see if
248	that doesn'T solve your problem in a better way.	287	that doesn't solve your problem in a better way.
249		288
250	=back	289	=back
251		290
252	Example: make a simple HTTP GET request for http://www.nethype.de/	291	Example: make a simple HTTP GET request for http://www.nethype.de/
253		292
…		…
309	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	348	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
310		349
311	_slot_schedule $_[0];	350	_slot_schedule $_[0];
312	}	351	}
313		352
314	our $qr_nl = qr<\015?\012>;	353	our $qr_nlnl = qr{(?<![^\012])\015?\012};
315	our $qr_nlnl = qr<\015?\012\015?\012>;
316		354
317	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };	355	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
318	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };	356	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
319		357
320	sub http_request($$@) {	358	sub http_request($$@) {
…		…
332	while (my ($k, $v) = each %$hdr) {	370	while (my ($k, $v) = each %$hdr) {
333	$hdr{lc $k} = $v;	371	$hdr{lc $k} = $v;
334	}	372	}
335	}	373	}
336		374
		375	# pseudo headers for all subsequent responses
		376	my @pseudo = (URL => $url);
		377	push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
		378
337	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;	379	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
338		380
339	return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })	381	return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })
340	if $recurse < 0;	382	if $recurse < 0;
341		383
342	my $proxy = $arg{proxy} \|\| $PROXY;	384	my $proxy = $arg{proxy} \|\| $PROXY;
343	my $timeout = $arg{timeout} \|\| $TIMEOUT;	385	my $timeout = $arg{timeout} \|\| $TIMEOUT;
344		386
345	my ($uscheme, $uauthority, $upath, $query, $fragment) =	387	my ($uscheme, $uauthority, $upath, $query, $fragment) =
346	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	388	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:(\?[^#]))?(?:#(.))?\|;
347		389
348	$uscheme = lc $uscheme;	390	$uscheme = lc $uscheme;
349		391
350	my $uport = $uscheme eq "http" ? 80	392	my $uport = $uscheme eq "http" ? 80
351	: $uscheme eq "https" ? 443	393	: $uscheme eq "https" ? 443
352	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });	394	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });
353		395
354	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	396	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
355	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	397	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });
356		398
357	my $uhost = $1;	399	my $uhost = $1;
358	$uport = $2 if defined $2;	400	$uport = $2 if defined $2;
359		401
360	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";	402	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
		403	unless exists $hdr{host};
361		404
362	$uhost =~ s/^\[(.*)\]$/$1/;	405	$uhost =~ s/^\[(.*)\]$/$1/;
363	$upath .= "?$query" if length $query;	406	$upath .= $query if length $query;
364		407
365	$upath =~ s%^/?%/%;	408	$upath =~ s%^/?%/%;
366		409
367	# cookie processing	410	# cookie processing
368	if (my $jar = $arg{cookie_jar}) {	411	if (my $jar = $arg{cookie_jar}) {
…		…
398	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	441	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
399		442
400	if ($proxy) {	443	if ($proxy) {
401	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	444	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
402		445
		446	$rscheme = "http" unless defined $rscheme;
		447
403	# don't support https requests over https-proxy transport,	448	# don't support https requests over https-proxy transport,
404	# can't be done with tls as spec'ed, unless you double-encrypt.	449	# can't be done with tls as spec'ed, unless you double-encrypt.
405	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	450	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
406	} else {	451	} else {
407	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	452	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
408	}	453	}
409		454
410	$hdr{"user-agent"} \|\|= $USERAGENT;	455	# leave out fragment and query string, just a heuristic
411	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic	456	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		457	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};
412		458
413	$hdr{"content-length"} = length $arg{body};	459	$hdr{"content-length"} = length $arg{body}
		460	if length $arg{body} \|\| $method ne "GET";
414		461
415	my %state = (connect_guard => 1);	462	my %state = (connect_guard => 1);
416		463
417	_get_slot $uhost, sub {	464	_get_slot $uhost, sub {
418	$state{slot_guard} = shift;	465	$state{slot_guard} = shift;
419		466
420	return unless $state{connect_guard};	467	return unless $state{connect_guard};
421		468
422	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	469	my $tcp_connect = $arg{tcp_connect}
		470	\|\| do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
		471
		472	$state{connect_guard} = $tcp_connect->(
		473	$rhost,
		474	$rport,
		475	sub {
423	$state{fh} = shift	476	$state{fh} = shift
424	or do {	477	or do {
425	my $err = "$!";	478	my $err = "$!";
426	%state = ();	479	%state = ();
427	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });	480	return $cb->(undef, { Status => 599, Reason => $err, @pseudo });
428	};	481	};
429		482
430	pop; # free memory, save a tree	483	pop; # free memory, save a tree
431		484
432	return unless delete $state{connect_guard};	485	return unless delete $state{connect_guard};
433		486
434	# get handle	487	# get handle
435	$state{handle} = new AnyEvent::Handle	488	$state{handle} = new AnyEvent::Handle
436	fh => $state{fh},	489	fh => $state{fh},
		490	peername => $rhost,
		491	tls_ctx => $arg{tls_ctx},
		492	# these need to be reconfigured on keepalive handles
437	timeout => $timeout,	493	timeout => $timeout,
438	peername => $rhost,	494	on_error => sub {
439	tls_ctx => $arg{tls_ctx};	495	%state = ();
		496	$cb->(undef, { Status => 599, Reason => $_[2], @pseudo });
		497	},
		498	on_eof => sub {
		499	%state = ();
		500	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });
		501	},
		502	;
440		503
441	# limit the number of persistent connections	504	# limit the number of persistent connections
442	# keepalive not yet supported	505	# keepalive not yet supported
443	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	506	# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
444	++$KA_COUNT{$_[1]};	507	# ++$KA_COUNT{$_[1]};
445	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {	508	# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
446	--$KA_COUNT{$_[1]}	509	# --$KA_COUNT{$_[1]}
447	};	510	# };
448	$hdr{connection} = "keep-alive";	511	# $hdr{connection} = "keep-alive";
449	} else {	512	# } else {
450	delete $hdr{connection};	513	delete $hdr{connection};
451	}	514	# }
452		515
453	# (re-)configure handle
454	$state{handle}->on_error (sub {
455	%state = ();
456	$cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
457	});
458	$state{handle}->on_eof (sub {
459	%state = ();
460	$cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
461	});
462
463	$state{handle}->starttls ("connect") if $rscheme eq "https";	516	$state{handle}->starttls ("connect") if $rscheme eq "https";
464		517
465	# handle actual, non-tunneled, request	518	# handle actual, non-tunneled, request
466	my $handle_actual_request = sub {	519	my $handle_actual_request = sub {
467	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	520	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
468		521
469	# send request	522	# send request
470	$state{handle}->push_write (	523	$state{handle}->push_write (
471	"$method $rpath HTTP/1.0\015\012"	524	"$method $rpath HTTP/1.0\015\012"
472	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	525	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
473	. "\015\012"	526	. "\015\012"
474	. (delete $arg{body})	527	. (delete $arg{body})
475	);
476
477	%hdr = (); # reduce memory usage, save a kitten
478
479	# status line
480	$state{handle}->push_read (line => $qr_nl, sub {
481	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
482	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
483
484	my %hdr = ( # response headers
485	HTTPVersion => ",$1",
486	Status => ",$2",
487	Reason => ",$3",
488	URL => ",$url"
489	);	528	);
490		529
491	# headers, could be optimized a bit	530	# return if error occured during push_write()
		531	return unless %state;
		532
		533	%hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
		534
		535	# status line and headers
492	$state{handle}->unshift_read (line => $qr_nlnl, sub {	536	$state{handle}->push_read (line => $qr_nlnl, sub {
493	for ("$_[1]\012") {	537	for ("$_[1]") {
494	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	538	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		539
		540	/^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc
		541	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));
		542
		543	push @pseudo,
		544	HTTPVersion => $1,
		545	Status => $2,
		546	Reason => $3,
		547	;
495		548
496	# things seen, not parsed:	549	# things seen, not parsed:
497	# p3pP="NON CUR OTPi OUR NOR UNI"	550	# p3pP="NON CUR OTPi OUR NOR UNI"
498		551
499	$hdr{lc $1} .= ",$2"	552	$hdr{lc $1} .= ",$2"
…		…
503	((?: [^\012]+ \| \012[\011\040] )*)	556	((?: [^\012]+ \| \012[\011\040] )*)
504	\012	557	\012
505	/gxc;	558	/gxc;
506		559
507	/\G$/	560	/\G$/
508	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));	561	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));
509	}	562	}
510		563
		564	# remove the "," prefix we added to all headers above
511	substr $_, 0, 1, ""	565	substr $_, 0, 1, ""
512	for values %hdr;	566	for values %hdr;
		567
		568	# patch in all pseudo headers
		569	%hdr = (%hdr, @pseudo);
513		570
514	# redirect handling	571	# redirect handling
515	# microsoft and other shitheads don't give a shit for following standards,	572	# microsoft and other shitheads don't give a shit for following standards,
516	# try to support some common forms of broken Location headers.	573	# try to support some common forms of broken Location headers.
517	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	574	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
…		…
528	}	585	}
529		586
530	my $redirect;	587	my $redirect;
531		588
532	if ($recurse) {	589	if ($recurse) {
533	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {	590	my $status = $hdr{Status};
534	# apparently, mozilla et al. just change POST to GET here	591
535	# more research is needed before we do the same	592	# industry standard is to redirect POST as GET for
536	$redirect = 1;	593	# 301, 302 and 303, in contrast to http/1.0 and 1.1.
537	} elsif ($hdr{Status} == 303) {	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) {
538	# even http/1.1 is unclear on how to mutate the method	598	# HTTP/1.1 is unclear on how to mutate the method
539	$method = "GET" unless $method eq "HEAD";	599	$method = "GET" unless $method eq "HEAD";
540	$redirect = 1;	600	$redirect = 1;
541	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {	601	} elsif ($status == 307) {
542	$redirect = 1;	602	$redirect = 1;
543	}	603	}
544	}	604	}
545		605
546	my $finish = sub {	606	my $finish = sub {
…		…
595		655
596	redo if /\G\s*,/gc;	656	redo if /\G\s*,/gc;
597	}	657	}
598	}	658	}
599		659
600	if ($redirect) {	660	if ($redirect && exists $hdr{location}) {
601	# we ignore any errors, as it is very common to receive	661	# we ignore any errors, as it is very common to receive
602	# Content-Length != 0 but no actual body	662	# Content-Length != 0 but no actual body
603	# we also access %hdr, as $_[1] might be an erro	663	# we also access %hdr, as $_[1] might be an erro
604	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);	664	http_request (
		665	$method => $hdr{location},
		666	%arg,
		667	recurse => $recurse - 1,
		668	Redirect => \@_,
		669	$cb);
605	} else {	670	} else {
606	$cb->($_[0], $_[1]);	671	$cb->($_[0], $_[1]);
607	}	672	}
608	};	673	};
609		674
610	my $len = $hdr{"content-length"};	675	my $len = $hdr{"content-length"};
611		676
612	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {	677	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
613	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });	678	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
614	} elsif (	679	} elsif (
615	$hdr{Status} =~ /^(?:1..\|[23]04)$/	680	$hdr{Status} =~ /^(?:1..\|[23]04)$/
616	or $method eq "HEAD"	681	or $method eq "HEAD"
617	or (defined $len && !$len)	682	or (defined $len && !$len)
618	) {	683	) {
…		…
621	} else {	686	} else {
622	# body handling, four different code paths	687	# body handling, four different code paths
623	# for want_body_handle, on_body (2x), normal (2x)	688	# for want_body_handle, on_body (2x), normal (2x)
624	# we might read too much here, but it does not matter yet (no pers. connections)	689	# we might read too much here, but it does not matter yet (no pers. connections)
625	if (!$redirect && $arg{want_body_handle}) {	690	if (!$redirect && $arg{want_body_handle}) {
626	$_[0]->on_eof (undef);	691	$_[0]->on_eof (undef);
627	$_[0]->on_error (undef);	692	$_[0]->on_error (undef);
628	$_[0]->on_read (undef);	693	$_[0]->on_read (undef);
629		694
630	$finish->(delete $state{handle}, \%hdr);	695	$finish->(delete $state{handle}, \%hdr);
631		696
632	} elsif ($arg{on_body}) {	697	} elsif ($arg{on_body}) {
633	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });	698	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
634	if ($len) {	699	if ($len) {
635	$_[0]->on_eof (undef);	700	$_[0]->on_eof (undef);
636	$_[0]->on_read (sub {	701	$_[0]->on_read (sub {
637	$len -= length $_[0]{rbuf};	702	$len -= length $_[0]{rbuf};
638		703
639	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	704	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
640	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });	705	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
641		706
642	$len > 0	707	$len > 0
643	or $finish->("", \%hdr);	708	or $finish->("", \%hdr);
644	});	709	});
645	} else {	710	} else {
646	$_[0]->on_eof (sub {	711	$_[0]->on_eof (sub {
647	$finish->("", \%hdr);	712	$finish->("", \%hdr);
648	});	713	});
649	$_[0]->on_read (sub {	714	$_[0]->on_read (sub {
650	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)	715	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
651	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });	716	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
652	});	717	});
653	}	718	}
654	} else {	719	} else {
655	$_[0]->on_eof (undef);	720	$_[0]->on_eof (undef);
656		721
657	if ($len) {	722	if ($len) {
658	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });	723	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
659	$_[0]->on_read (sub {	724	$_[0]->on_read (sub {
660	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)	725	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
661	if $len <= length $_[0]{rbuf};	726	if $len <= length $_[0]{rbuf};
662	});	727	});
663	} else {	728	} else {
664	$_[0]->on_error (sub {	729	$_[0]->on_error (sub {
665	$! == Errno::EPIPE \|\| !$!	730	($! == Errno::EPIPE \|\| !$!)
666	? $finish->(delete $_[0]{rbuf}, \%hdr)	731	? $finish->(delete $_[0]{rbuf}, \%hdr)
667	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });	732	: $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
668	});	733	});
669	$_[0]->on_read (sub { });	734	$_[0]->on_read (sub { });
670	}	735	}
671	}	736	}
672	}	737	}
673	});	738	});
674	});	739	};
675	};
676		740
677	# now handle proxy-CONNECT method	741	# now handle proxy-CONNECT method
678	if ($proxy && $uscheme eq "https") {	742	if ($proxy && $uscheme eq "https") {
679	# oh dear, we have to wrap it into a connect request	743	# oh dear, we have to wrap it into a connect request
680		744
681	# maybe re-use $uauthority with patched port?	745	# maybe re-use $uauthority with patched port?
682	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");	746	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
683	$state{handle}->push_read (line => $qr_nlnl, sub {	747	$state{handle}->push_read (line => $qr_nlnl, sub {
684	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix	748	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
685	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));	749	or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));
686		750
687	if ($2 == 200) {	751	if ($2 == 200) {
688	$rpath = $upath;	752	$rpath = $upath;
689	&$handle_actual_request;	753	&$handle_actual_request;
690	} else {	754	} else {
691	%state = ();	755	%state = ();
692	$cb->(undef, { Status => $2, Reason => $3, URL => $url });	756	$cb->(undef, { Status => $2, Reason => $3, @pseudo });
		757	}
693	}	758	});
694	});
695	} else {	759	} else {
696	&$handle_actual_request;	760	&$handle_actual_request;
		761	}
		762
697	}	763	},
698		764	$arg{on_prepare} \|\| sub { $timeout }
699	}, sub {
700	$timeout
701	};	765	);
702	};	766	};
703		767
704	defined wantarray && AnyEvent::Util::guard { %state = () }	768	defined wantarray && AnyEvent::Util::guard { %state = () }
705	}	769	}
706		770
…		…
720	&http_request	784	&http_request
721	}	785	}
722		786
723	=back	787	=back
724		788
		789	=head2 DNS CACHING
		790
		791	AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
		792	the actual connection, which in turn uses AnyEvent::DNS to resolve
		793	hostnames. The latter is a simple stub resolver and does no caching
		794	on its own. If you want DNS caching, you currently have to provide
		795	your own default resolver (by storing a suitable resolver object in
		796	C<$AnyEvent::DNS::RESOLVER>).
		797
725	=head2 GLOBAL FUNCTIONS AND VARIABLES	798	=head2 GLOBAL FUNCTIONS AND VARIABLES
726		799
727	=over 4	800	=over 4
728		801
729	=item AnyEvent::HTTP::set_proxy "proxy-url"	802	=item AnyEvent::HTTP::set_proxy "proxy-url"
730		803
731	Sets the default proxy server to use. The proxy-url must begin with a	804	Sets the default proxy server to use. The proxy-url must begin with a
732	string of the form C<http://host:port> (optionally C<https:...>).	805	string of the form C<http://host:port> (optionally C<https:...>), croaks
		806	otherwise.
		807
		808	To clear an already-set proxy, use C<undef>.
733		809
734	=item $AnyEvent::HTTP::MAX_RECURSE	810	=item $AnyEvent::HTTP::MAX_RECURSE
735		811
736	The default value for the C<recurse> request parameter (default: C<10>).	812	The default value for the C<recurse> request parameter (default: C<10>).
737		813
…		…
740	The default value for the C<User-Agent> header (the default is	816	The default value for the C<User-Agent> header (the default is
741	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	817	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
742		818
743	=item $AnyEvent::HTTP::MAX_PER_HOST	819	=item $AnyEvent::HTTP::MAX_PER_HOST
744		820
745	The maximum number of concurrent conenctions to the same host (identified	821	The maximum number of concurrent connections to the same host (identified
746	by the hostname). If the limit is exceeded, then the additional requests	822	by the hostname). If the limit is exceeded, then the additional requests
747	are queued until previous connections are closed.	823	are queued until previous connections are closed.
748		824
749	The default value for this is C<4>, and it is highly advisable to not	825	The default value for this is C<4>, and it is highly advisable to not
750	increase it.	826	increase it.
…		…
758	=back	834	=back
759		835
760	=cut	836	=cut
761		837
762	sub set_proxy($) {	838	sub set_proxy($) {
		839	if (length $_[0]) {
763	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	840	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		841	or Carp::croak "$_[0]: invalid proxy URL";
		842	$PROXY = [$2, $3 \|\| 3128, $1]
		843	} else {
		844	undef $PROXY;
		845	}
764	}	846	}
765		847
766	# initialise proxy from environment	848	# initialise proxy from environment
		849	eval {
767	set_proxy $ENV{http_proxy};	850	set_proxy $ENV{http_proxy};
		851	};
768		852
769	=head1 SEE ALSO	853	=head1 SEE ALSO
770		854
771	L<AnyEvent>.	855	L<AnyEvent>.
772		856

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC vs. Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC vs.
Revision 1.59 by root, Wed Dec 29 23:59:36 2010 UTC