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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs.
Revision 1.52 by root, Sat Sep 26 10:13:12 2009 UTC

…		…
39	package AnyEvent::HTTP;	39	package AnyEvent::HTTP;
40		40
41	use strict;	41	use strict;
42	no warnings;	42	no warnings;
43		43
44	use Carp;	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 = '1.43';
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" C<HTTPVersion>, C<Status> and C<Reason>
105	contain the three parts of the HTTP Status-Line of the same name. The	105	contain the three parts of the HTTP Status-Line of the same name. The
106	pseudo-header C<URL> contains the original URL (which can differ from the	106	pseudo-header C<URL> contains the original URL (which can differ from the
…		…
108		108
109	If the server sends a header multiple times, then their contents will be	109	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.	110	joined together with a comma (C<,>), as per the HTTP spec.
111		111
112	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
114	and the C<Reason> pseudo-header will contain an error message.	114	(usually C<599>) and the C<Reason> pseudo-header will contain an error
		115	message.
115		116
116	A typical callback might look like this:	117	A typical callback might look like this:
117		118
118	sub {	119	sub {
119	my ($body, $hdr) = @_;	120	my ($body, $hdr) = @_;
…		…
137		138
138	=item headers => hashref	139	=item headers => hashref
139		140
140	The request headers to use. Currently, C<http_request> may provide its	141	The request headers to use. Currently, C<http_request> may provide its
141	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers	142	own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
142	and will provide defaults for C<User-Agent:> and C<Referer:>.	143	and will provide defaults for C<User-Agent:> and C<Referer:> (this can be
		144	suppressed by using C<undef> for these headers in which case they won't be
		145	sent at all).
143		146
144	=item timeout => $seconds	147	=item timeout => $seconds
145		148
146	The time-out to use for various stages - each connect attempt will reset	149	The time-out to use for various stages - each connect attempt will reset
147	the timeout, as will read or write activity. Default timeout is 5 minutes.	150	the timeout, as will read or write activity, i.e. this is not an overall
		151	timeout.
		152
		153	Default timeout is 5 minutes.
148		154
149	=item proxy => [$host, $port[, $scheme]] or undef	155	=item proxy => [$host, $port[, $scheme]] or undef
150		156
151	Use the given http proxy for all requests. If not specified, then the	157	Use the given http proxy for all requests. If not specified, then the
152	default proxy (as specified by C<$ENV{http_proxy}>) is used.	158	default proxy (as specified by C<$ENV{http_proxy}>) is used.
153		159
154	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	160	C<$scheme> must be either missing, C<http> for HTTP or C<https> for
155	HTTPS.	161	HTTPS.
156		162
157	=item body => $string	163	=item body => $string
158		164
159	The request body, usually empty. Will be-sent as-is (future versions of	165	The request body, usually empty. Will be-sent as-is (future versions of
…		…
184	verification, highest compatibility) and high-security (CA and common-name	190	verification, highest compatibility) and high-security (CA and common-name
185	verification) TLS context.	191	verification) TLS context.
186		192
187	The default for this option is C<low>, which could be interpreted as "give	193	The default for this option is C<low>, which could be interpreted as "give
188	me the page, no matter what".	194	me the page, no matter what".
		195
		196	=item on_prepare => $callback->($fh)
		197
		198	In rare cases you need to "tune" the socket before it is used to
		199	connect (for exmaple, to bind it on a given IP address). This parameter
		200	overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
		201	and behaves exactly the same way (e.g. it has to provide a
		202	timeout). See the description for the C<$prepare_cb> argument of
		203	C<AnyEvent::Socket::tcp_connect> for details.
		204
		205	=item on_header => $callback->($headers)
		206
		207	When specified, this callback will be called with the header hash as soon
		208	as headers have been successfully received from the remote server (not on
		209	locally-generated errors).
		210
		211	It has to return either true (in which case AnyEvent::HTTP will continue),
		212	or false, in which case AnyEvent::HTTP will cancel the download (and call
		213	the finish callback with an error code of C<598>).
		214
		215	This callback is useful, among other things, to quickly reject unwanted
		216	content, which, if it is supposed to be rare, can be faster than first
		217	doing a C<HEAD> request.
		218
		219	Example: cancel the request unless the content-type is "text/html".
		220
		221	on_header => sub {
		222	$_[0]{"content-type"} =~ /^text\/html\s*(?:;\|$)/
		223	},
		224
		225	=item on_body => $callback->($partial_body, $headers)
		226
		227	When specified, all body data will be passed to this callback instead of
		228	to the completion callback. The completion callback will get the empty
		229	string instead of the body data.
		230
		231	It has to return either true (in which case AnyEvent::HTTP will continue),
		232	or false, in which case AnyEvent::HTTP will cancel the download (and call
		233	the completion callback with an error code of C<598>).
		234
		235	This callback is useful when the data is too large to be held in memory
		236	(so the callback writes it to a file) or when only some information should
		237	be extracted, or when the body should be processed incrementally.
		238
		239	It is usually preferred over doing your own body handling via
		240	C<want_body_handle>, but in case of streaming APIs, where HTTP is
		241	only used to create a connection, C<want_body_handle> is the better
		242	alternative, as it allows you to install your own event handler, reducing
		243	resource usage.
		244
		245	=item want_body_handle => $enable
		246
		247	When enabled (default is disabled), the behaviour of AnyEvent::HTTP
		248	changes considerably: after parsing the headers, and instead of
		249	downloading the body (if any), the completion callback will be
		250	called. Instead of the C<$body> argument containing the body data, the
		251	callback will receive the L<AnyEvent::Handle> object associated with the
		252	connection. In error cases, C<undef> will be passed. When there is no body
		253	(e.g. status C<304>), the empty string will be passed.
		254
		255	The handle object might or might not be in TLS mode, might be connected to
		256	a proxy, be a persistent connection etc., and configured in unspecified
		257	ways. The user is responsible for this handle (it will not be used by this
		258	module anymore).
		259
		260	This is useful with some push-type services, where, after the initial
		261	headers, an interactive protocol is used (typical example would be the
		262	push-style twitter API which starts a JSON/XML stream).
		263
		264	If you think you need this, first have a look at C<on_body>, to see if
		265	that doesn't solve your problem in a better way.
189		266
190	=back	267	=back
191		268
192	Example: make a simple HTTP GET request for http://www.nethype.de/	269	Example: make a simple HTTP GET request for http://www.nethype.de/
193		270
…		…
249	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];	326	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
250		327
251	_slot_schedule $_[0];	328	_slot_schedule $_[0];
252	}	329	}
253		330
254	our $qr_nl = qr<\015?\012>;	331	our $qr_nl = qr{\015?\012};
255	our $qr_nlnl = qr<\015?\012\015?\012>;	332	our $qr_nlnl = qr{(?<![^\012])\015?\012};
256		333
257	our $TLS_CTX_LOW = { cache => 1, dh => undef, sslv2 => 1 };	334	our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
258	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_cn => "https", dh => "skip4096" };	335	our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
259		336
260	sub http_request($$@) {	337	sub http_request($$@) {
261	my $cb = pop;	338	my $cb = pop;
262	my ($method, $url, %arg) = @_;	339	my ($method, $url, %arg) = @_;
263		340
…		…
280	if $recurse < 0;	357	if $recurse < 0;
281		358
282	my $proxy = $arg{proxy} \|\| $PROXY;	359	my $proxy = $arg{proxy} \|\| $PROXY;
283	my $timeout = $arg{timeout} \|\| $TIMEOUT;	360	my $timeout = $arg{timeout} \|\| $TIMEOUT;
284		361
285	$hdr{"user-agent"} \|\|= $USERAGENT;
286
287	my ($uscheme, $uauthority, $upath, $query, $fragment) =	362	my ($uscheme, $uauthority, $upath, $query, $fragment) =
288	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;	363	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
289		364
290	$uscheme = lc $uscheme;	365	$uscheme = lc $uscheme;
291		366
292	my $uport = $uscheme eq "http" ? 80	367	my $uport = $uscheme eq "http" ? 80
293	: $uscheme eq "https" ? 443	368	: $uscheme eq "https" ? 443
294	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported (not '$uscheme')", URL => $url });	369	: return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
295
296	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
297		370
298	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x	371	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
299	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });	372	or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
300		373
301	my $uhost = $1;	374	my $uhost = $1;
302	$uport = $2 if defined $2;	375	$uport = $2 if defined $2;
		376
		377	$hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
303		378
304	$uhost =~ s/^\[(.*)\]$/$1/;	379	$uhost =~ s/^\[(.*)\]$/$1/;
305	$upath .= "?$query" if length $query;	380	$upath .= "?$query" if length $query;
306		381
307	$upath =~ s%^/?%/%;	382	$upath =~ s%^/?%/%;
…		…
340	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	415	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
341		416
342	if ($proxy) {	417	if ($proxy) {
343	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	418	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
344		419
		420	$rscheme = "http" unless defined $rscheme;
		421
345	# don't support https requests over https-proxy transport,	422	# don't support https requests over https-proxy transport,
346	# can't be done with tls as spec'ed, unless you double-encrypt.	423	# can't be done with tls as spec'ed, unless you double-encrypt.
347	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	424	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
348	} else {	425	} else {
349	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	426	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
350	}	427	}
351		428
352	$hdr{host} = $uhost;	429	# leave out fragment and query string, just a heuristic
		430	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		431	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};
		432
353	$hdr{"content-length"} = length $arg{body};	433	$hdr{"content-length"} = length $arg{body};
354		434
355	my %state = (connect_guard => 1);	435	my %state = (connect_guard => 1);
356		436
357	_get_slot $uhost, sub {	437	_get_slot $uhost, sub {
…		…
359		439
360	return unless $state{connect_guard};	440	return unless $state{connect_guard};
361		441
362	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	442	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
363	$state{fh} = shift	443	$state{fh} = shift
		444	or do {
		445	my $err = "$!";
		446	%state = ();
364	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));	447	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
		448	};
		449
365	pop; # free memory, save a tree	450	pop; # free memory, save a tree
366		451
367	return unless delete $state{connect_guard};	452	return unless delete $state{connect_guard};
368		453
369	# get handle	454	# get handle
…		…
402	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	487	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
403		488
404	# send request	489	# send request
405	$state{handle}->push_write (	490	$state{handle}->push_write (
406	"$method $rpath HTTP/1.0\015\012"	491	"$method $rpath HTTP/1.0\015\012"
407	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	492	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
408	. "\015\012"	493	. "\015\012"
409	. (delete $arg{body})	494	. (delete $arg{body})
410	);	495	);
411		496
412	%hdr = (); # reduce memory usage, save a kitten	497	%hdr = (); # reduce memory usage, save a kitten
…		…
423	URL => ",$url"	508	URL => ",$url"
424	);	509	);
425		510
426	# headers, could be optimized a bit	511	# headers, could be optimized a bit
427	$state{handle}->unshift_read (line => $qr_nlnl, sub {	512	$state{handle}->unshift_read (line => $qr_nlnl, sub {
428	for ("$_[1]\012") {	513	for ("$_[1]") {
429	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	514	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
430		515
431	# things seen, not parsed:	516	# things seen, not parsed:
432	# p3pP="NON CUR OTPi OUR NOR UNI"	517	# p3pP="NON CUR OTPi OUR NOR UNI"
433		518
434	$hdr{lc $1} .= ",$2"	519	$hdr{lc $1} .= ",$2"
435	while /\G	520	while /\G
436	([^:\000-\037]+):	521	([^:\000-\037]*):
437	[\011\040]*	522	[\011\040]*
438	((?: [^\012]+ \| \012[\011\040] )*)	523	((?: [^\012]+ \| \012[\011\040] )*)
439	\012	524	\012
440	/gxc;	525	/gxc;
441		526
…		…
444	}	529	}
445		530
446	substr $_, 0, 1, ""	531	substr $_, 0, 1, ""
447	for values %hdr;	532	for values %hdr;
448		533
		534	# redirect handling
		535	# microsoft and other shitheads don't give a shit for following standards,
		536	# try to support some common forms of broken Location headers.
		537	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		538	$hdr{location} =~ s/^\.\/+//;
		539
		540	my $url = "$rscheme://$uhost:$uport";
		541
		542	unless ($hdr{location} =~ s/^\///) {
		543	$url .= $upath;
		544	$url =~ s/\/[^\/]*$//;
		545	}
		546
		547	$hdr{location} = "$url/$hdr{location}";
		548	}
		549
		550	my $redirect;
		551
		552	if ($recurse) {
		553	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		554	# apparently, mozilla et al. just change POST to GET here
		555	# more research is needed before we do the same
		556	$redirect = 1;
		557	} elsif ($hdr{Status} == 303) {
		558	# even http/1.1 is unclear on how to mutate the method
		559	$method = "GET" unless $method eq "HEAD";
		560	$redirect = 1;
		561	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		562	$redirect = 1;
		563	}
		564	}
		565
449	my $finish = sub {	566	my $finish = sub {
450	$state{handle}->destroy;	567	$state{handle}->destroy if $state{handle};
451	%state = ();	568	%state = ();
452		569
453	# set-cookie processing	570	# set-cookie processing
454	if ($arg{cookie_jar}) {	571	if ($arg{cookie_jar}) {
455	for ($hdr{"set-cookie"}) {	572	for ($_[1]{"set-cookie"}) {
456	# parse NAME=VALUE	573	# parse NAME=VALUE
457	my @kv;	574	my @kv;
458		575
459	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {	576	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
460	my $name = $1;	577	my $name = $1;
…		…
498		615
499	redo if /\G\s*,/gc;	616	redo if /\G\s*,/gc;
500	}	617	}
501	}	618	}
502		619
503	# microsoft and other shitheads don't give a shit for following standards,	620	if ($redirect && exists $hdr{location}) {
504	# try to support some common forms of broken Location headers.	621	# we ignore any errors, as it is very common to receive
505	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	622	# Content-Length != 0 but no actual body
506	$_[1]{location} =~ s/^\.\/+//;	623	# we also access %hdr, as $_[1] might be an erro
507
508	my $url = "$rscheme://$uhost:$uport";
509
510	unless ($_[1]{location} =~ s/^\///) {
511	$url .= $upath;
512	$url =~ s/\/[^\/]*$//;
513	}
514
515	$_[1]{location} = "$url/$_[1]{location}";
516	}
517
518	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
519	# apparently, mozilla et al. just change POST to GET here
520	# more research is needed before we do the same
521	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);	624	http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
522	} elsif ($_[1]{Status} == 303 && $recurse) {
523	# even http/1.1 is unclear on how to mutate the method
524	$method = "GET" unless $method eq "HEAD";
525	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
526	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
527	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
528	} else {	625	} else {
529	$cb->($_[0], $_[1]);	626	$cb->($_[0], $_[1]);
530	}	627	}
531	};	628	};
532		629
533	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	630	my $len = $hdr{"content-length"};
		631
		632	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		633	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		634	} elsif (
		635	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		636	or $method eq "HEAD"
		637	or (defined $len && !$len)
		638	) {
		639	# no body
534	$finish->(undef, \%hdr);	640	$finish->("", \%hdr);
535	} else {	641	} else {
536	if (exists $hdr{"content-length"}) {	642	# body handling, four different code paths
537	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	643	# for want_body_handle, on_body (2x), normal (2x)
538	# could cache persistent connection now	644	# we might read too much here, but it does not matter yet (no pers. connections)
539	if ($hdr{connection} =~ /\bkeep-alive\b/i) {	645	if (!$redirect && $arg{want_body_handle}) {
540	# but we don't, due to misdesigns, this is annoyingly complex	646	$_[0]->on_eof (undef);
		647	$_[0]->on_error (undef);
		648	$_[0]->on_read (undef);
		649
		650	$finish->(delete $state{handle}, \%hdr);
		651
		652	} elsif ($arg{on_body}) {
		653	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		654	if ($len) {
		655	$_[0]->on_eof (undef);
		656	$_[0]->on_read (sub {
		657	$len -= length $_[0]{rbuf};
		658
		659	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		660	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		661
		662	$len > 0
		663	or $finish->("", \%hdr);
541	};	664	});
542		665	} else {
		666	$_[0]->on_eof (sub {
543	$finish->($_[1], \%hdr);	667	$finish->("", \%hdr);
		668	});
		669	$_[0]->on_read (sub {
		670	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		671	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		672	});
544	});	673	}
545	} else {	674	} else {
546	# too bad, need to read until we get an error or EOF,
547	# no way to detect winged data.
548	$_[0]->on_error (sub {
549	# delete ought to be more efficient, as we would have to make
550	# a copy otherwise as $_[0] gets destroyed.
551	$finish->(delete $_[0]{rbuf}, \%hdr);
552	});
553	$_[0]->on_eof (undef);	675	$_[0]->on_eof (undef);
		676
		677	if ($len) {
		678	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		679	$_[0]->on_read (sub {
		680	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		681	if $len <= length $_[0]{rbuf};
		682	});
		683	} else {
		684	$_[0]->on_error (sub {
		685	$! == Errno::EPIPE \|\| !$!
		686	? $finish->(delete $_[0]{rbuf}, \%hdr)
		687	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		688	});
554	$_[0]->on_read (sub { });	689	$_[0]->on_read (sub { });
		690	}
555	}	691	}
556	}	692	}
557	});	693	});
558	});	694	});
559	};	695	};
…		…
578	});	714	});
579	} else {	715	} else {
580	&$handle_actual_request;	716	&$handle_actual_request;
581	}	717	}
582		718
583	}, sub {	719	}, $arg{on_prepare} \|\| sub { $timeout };
584	$timeout
585	};
586	};	720	};
587		721
588	defined wantarray && AnyEvent::Util::guard { %state = () }	722	defined wantarray && AnyEvent::Util::guard { %state = () }
589	}	723	}
590		724
…		…
611	=over 4	745	=over 4
612		746
613	=item AnyEvent::HTTP::set_proxy "proxy-url"	747	=item AnyEvent::HTTP::set_proxy "proxy-url"
614		748
615	Sets the default proxy server to use. The proxy-url must begin with a	749	Sets the default proxy server to use. The proxy-url must begin with a
616	string of the form C<http://host:port> (optionally C<https:...>).	750	string of the form C<http://host:port> (optionally C<https:...>), croaks
		751	otherwise.
		752
		753	To clear an already-set proxy, use C<undef>.
617		754
618	=item $AnyEvent::HTTP::MAX_RECURSE	755	=item $AnyEvent::HTTP::MAX_RECURSE
619		756
620	The default value for the C<recurse> request parameter (default: C<10>).	757	The default value for the C<recurse> request parameter (default: C<10>).
621		758
622	=item $AnyEvent::HTTP::USERAGENT	759	=item $AnyEvent::HTTP::USERAGENT
623		760
624	The default value for the C<User-Agent> header (the default is	761	The default value for the C<User-Agent> header (the default is
625	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	762	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
626		763
627	=item $AnyEvent::HTTP::MAX_PERSISTENT	764	=item $AnyEvent::HTTP::MAX_PER_HOST
628		765
629	The maximum number of persistent connections to keep open (default: 8).	766	The maximum number of concurrent connections to the same host (identified
		767	by the hostname). If the limit is exceeded, then the additional requests
		768	are queued until previous connections are closed.
630		769
631	Not implemented currently.	770	The default value for this is C<4>, and it is highly advisable to not
632		771	increase it.
633	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
634
635	The maximum time to cache a persistent connection, in seconds (default: 2).
636
637	Not implemented currently.
638		772
639	=item $AnyEvent::HTTP::ACTIVE	773	=item $AnyEvent::HTTP::ACTIVE
640		774
641	The number of active connections. This is not the number of currently	775	The number of active connections. This is not the number of currently
642	running requests, but the number of currently open and non-idle TCP	776	running requests, but the number of currently open and non-idle TCP
…		…
645	=back	779	=back
646		780
647	=cut	781	=cut
648		782
649	sub set_proxy($) {	783	sub set_proxy($) {
		784	if (length $_[0]) {
650	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	785	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		786	or Carp::croak "$_[0]: invalid proxy URL";
		787	$PROXY = [$2, $3 \|\| 3128, $1]
		788	} else {
		789	undef $PROXY;
		790	}
651	}	791	}
652		792
653	# initialise proxy from environment	793	# initialise proxy from environment
		794	eval {
654	set_proxy $ENV{http_proxy};	795	set_proxy $ENV{http_proxy};
		796	};
655		797
656	=head1 SEE ALSO	798	=head1 SEE ALSO
657		799
658	L<AnyEvent>.	800	L<AnyEvent>.
659		801

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs. Revision 1.52 by root, Sat Sep 26 10:13:12 2009 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs.
Revision 1.52 by root, Sat Sep 26 10:13:12 2009 UTC