[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 1.54 by root, Wed Jun 16 18:09:52 2010 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 = '1.44';
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"
		378	unless exists $hdr{host};
303		379
304	$uhost =~ s/^\[(.*)\]$/$1/;	380	$uhost =~ s/^\[(.*)\]$/$1/;
305	$upath .= "?$query" if length $query;	381	$upath .= "?$query" if length $query;
306		382
307	$upath =~ s%^/?%/%;	383	$upath =~ s%^/?%/%;
…		…
340	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path	416	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
341		417
342	if ($proxy) {	418	if ($proxy) {
343	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);	419	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
344		420
		421	$rscheme = "http" unless defined $rscheme;
		422
345	# don't support https requests over https-proxy transport,	423	# don't support https requests over https-proxy transport,
346	# can't be done with tls as spec'ed, unless you double-encrypt.	424	# can't be done with tls as spec'ed, unless you double-encrypt.
347	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";	425	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
348	} else {	426	} else {
349	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);	427	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
350	}	428	}
351		429
352	$hdr{host} = $uhost;	430	# leave out fragment and query string, just a heuristic
		431	$hdr{referer} \|\|= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
		432	$hdr{"user-agent"} \|\|= $USERAGENT unless exists $hdr{"user-agent"};
		433
353	$hdr{"content-length"} = length $arg{body};	434	$hdr{"content-length"} = length $arg{body}
		435	if length $arg{body} \|\| $method ne "GET";
354		436
355	my %state = (connect_guard => 1);	437	my %state = (connect_guard => 1);
356		438
357	_get_slot $uhost, sub {	439	_get_slot $uhost, sub {
358	$state{slot_guard} = shift;	440	$state{slot_guard} = shift;
359		441
360	return unless $state{connect_guard};	442	return unless $state{connect_guard};
361		443
362	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {	444	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
363	$state{fh} = shift	445	$state{fh} = shift
		446	or do {
		447	my $err = "$!";
		448	%state = ();
364	or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));	449	return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
		450	};
		451
365	pop; # free memory, save a tree	452	pop; # free memory, save a tree
366		453
367	return unless delete $state{connect_guard};	454	return unless delete $state{connect_guard};
368		455
369	# get handle	456	# get handle
…		…
402	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};	489	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
403		490
404	# send request	491	# send request
405	$state{handle}->push_write (	492	$state{handle}->push_write (
406	"$method $rpath HTTP/1.0\015\012"	493	"$method $rpath HTTP/1.0\015\012"
407	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)	494	. (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
408	. "\015\012"	495	. "\015\012"
409	. (delete $arg{body})	496	. (delete $arg{body})
410	);	497	);
		498
		499	# return if error occured during push_write()
		500	return unless %state;
411		501
412	%hdr = (); # reduce memory usage, save a kitten	502	%hdr = (); # reduce memory usage, save a kitten
413		503
414	# status line	504	# status line
415	$state{handle}->push_read (line => $qr_nl, sub {	505	$state{handle}->push_read (line => $qr_nl, sub {
…		…
423	URL => ",$url"	513	URL => ",$url"
424	);	514	);
425		515
426	# headers, could be optimized a bit	516	# headers, could be optimized a bit
427	$state{handle}->unshift_read (line => $qr_nlnl, sub {	517	$state{handle}->unshift_read (line => $qr_nlnl, sub {
428	for ("$_[1]\012") {	518	for ("$_[1]") {
429	y/\015//d; # weed out any \015, as they show up in the weirdest of places.	519	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
430		520
431	# things seen, not parsed:	521	# things seen, not parsed:
432	# p3pP="NON CUR OTPi OUR NOR UNI"	522	# p3pP="NON CUR OTPi OUR NOR UNI"
433		523
434	$hdr{lc $1} .= ",$2"	524	$hdr{lc $1} .= ",$2"
435	while /\G	525	while /\G
436	([^:\000-\037]+):	526	([^:\000-\037]*):
437	[\011\040]*	527	[\011\040]*
438	((?: [^\012]+ \| \012[\011\040] )*)	528	((?: [^\012]+ \| \012[\011\040] )*)
439	\012	529	\012
440	/gxc;	530	/gxc;
441		531
…		…
444	}	534	}
445		535
446	substr $_, 0, 1, ""	536	substr $_, 0, 1, ""
447	for values %hdr;	537	for values %hdr;
448		538
		539	# redirect handling
		540	# microsoft and other shitheads don't give a shit for following standards,
		541	# try to support some common forms of broken Location headers.
		542	if ($hdr{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		543	$hdr{location} =~ s/^\.\/+//;
		544
		545	my $url = "$rscheme://$uhost:$uport";
		546
		547	unless ($hdr{location} =~ s/^\///) {
		548	$url .= $upath;
		549	$url =~ s/\/[^\/]*$//;
		550	}
		551
		552	$hdr{location} = "$url/$hdr{location}";
		553	}
		554
		555	my $redirect;
		556
		557	if ($recurse) {
		558	if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
		559	# apparently, mozilla et al. just change POST to GET here
		560	# more research is needed before we do the same
		561	$redirect = 1;
		562	} elsif ($hdr{Status} == 303) {
		563	# even http/1.1 is unclear on how to mutate the method
		564	$method = "GET" unless $method eq "HEAD";
		565	$redirect = 1;
		566	} elsif ($hdr{Status} == 307 && $method =~ /^(?:GET\|HEAD)$/) {
		567	$redirect = 1;
		568	}
		569	}
		570
449	my $finish = sub {	571	my $finish = sub {
450	$state{handle}->destroy;	572	$state{handle}->destroy if $state{handle};
451	%state = ();	573	%state = ();
452		574
453	# set-cookie processing	575	# set-cookie processing
454	if ($arg{cookie_jar}) {	576	if ($arg{cookie_jar}) {
455	for ($hdr{"set-cookie"}) {	577	for ($_[1]{"set-cookie"}) {
456	# parse NAME=VALUE	578	# parse NAME=VALUE
457	my @kv;	579	my @kv;
458		580
459	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {	581	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
460	my $name = $1;	582	my $name = $1;
…		…
498		620
499	redo if /\G\s*,/gc;	621	redo if /\G\s*,/gc;
500	}	622	}
501	}	623	}
502		624
503	# microsoft and other shitheads don't give a shit for following standards,	625	if ($redirect && exists $hdr{location}) {
504	# try to support some common forms of broken Location headers.	626	# we ignore any errors, as it is very common to receive
505	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {	627	# Content-Length != 0 but no actual body
506	$_[1]{location} =~ s/^\.\/+//;	628	# 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, $cb);	629	http_request ($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 {	630	} else {
529	$cb->($_[0], $_[1]);	631	$cb->($_[0], $_[1]);
530	}	632	}
531	};	633	};
532		634
533	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {	635	my $len = $hdr{"content-length"};
		636
		637	if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
		638	$finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
		639	} elsif (
		640	$hdr{Status} =~ /^(?:1..\|[23]04)$/
		641	or $method eq "HEAD"
		642	or (defined $len && !$len)
		643	) {
		644	# no body
534	$finish->(undef, \%hdr);	645	$finish->("", \%hdr);
535	} else {	646	} else {
536	if (exists $hdr{"content-length"}) {	647	# body handling, four different code paths
537	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	648	# for want_body_handle, on_body (2x), normal (2x)
538	# could cache persistent connection now	649	# we might read too much here, but it does not matter yet (no pers. connections)
539	if ($hdr{connection} =~ /\bkeep-alive\b/i) {	650	if (!$redirect && $arg{want_body_handle}) {
540	# but we don't, due to misdesigns, this is annoyingly complex	651	$_[0]->on_eof (undef);
		652	$_[0]->on_error (undef);
		653	$_[0]->on_read (undef);
		654
		655	$finish->(delete $state{handle}, \%hdr);
		656
		657	} elsif ($arg{on_body}) {
		658	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		659	if ($len) {
		660	$_[0]->on_eof (undef);
		661	$_[0]->on_read (sub {
		662	$len -= length $_[0]{rbuf};
		663
		664	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		665	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		666
		667	$len > 0
		668	or $finish->("", \%hdr);
541	};	669	});
542		670	} else {
		671	$_[0]->on_eof (sub {
543	$finish->($_[1], \%hdr);	672	$finish->("", \%hdr);
		673	});
		674	$_[0]->on_read (sub {
		675	$arg{on_body}(delete $_[0]{rbuf}, \%hdr)
		676	or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
		677	});
544	});	678	}
545	} else {	679	} 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);	680	$_[0]->on_eof (undef);
		681
		682	if ($len) {
		683	$_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
		684	$_[0]->on_read (sub {
		685	$finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
		686	if $len <= length $_[0]{rbuf};
		687	});
		688	} else {
		689	$_[0]->on_error (sub {
		690	$! == Errno::EPIPE \|\| !$!
		691	? $finish->(delete $_[0]{rbuf}, \%hdr)
		692	: $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
		693	});
554	$_[0]->on_read (sub { });	694	$_[0]->on_read (sub { });
		695	}
555	}	696	}
556	}	697	}
557	});	698	});
558	});	699	});
559	};	700	};
…		…
578	});	719	});
579	} else {	720	} else {
580	&$handle_actual_request;	721	&$handle_actual_request;
581	}	722	}
582		723
583	}, sub {	724	}, $arg{on_prepare} \|\| sub { $timeout };
584	$timeout
585	};
586	};	725	};
587		726
588	defined wantarray && AnyEvent::Util::guard { %state = () }	727	defined wantarray && AnyEvent::Util::guard { %state = () }
589	}	728	}
590		729
…		…
611	=over 4	750	=over 4
612		751
613	=item AnyEvent::HTTP::set_proxy "proxy-url"	752	=item AnyEvent::HTTP::set_proxy "proxy-url"
614		753
615	Sets the default proxy server to use. The proxy-url must begin with a	754	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:...>).	755	string of the form C<http://host:port> (optionally C<https:...>), croaks
		756	otherwise.
		757
		758	To clear an already-set proxy, use C<undef>.
617		759
618	=item $AnyEvent::HTTP::MAX_RECURSE	760	=item $AnyEvent::HTTP::MAX_RECURSE
619		761
620	The default value for the C<recurse> request parameter (default: C<10>).	762	The default value for the C<recurse> request parameter (default: C<10>).
621		763
622	=item $AnyEvent::HTTP::USERAGENT	764	=item $AnyEvent::HTTP::USERAGENT
623		765
624	The default value for the C<User-Agent> header (the default is	766	The default value for the C<User-Agent> header (the default is
625	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	767	C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
626		768
627	=item $AnyEvent::HTTP::MAX_PERSISTENT	769	=item $AnyEvent::HTTP::MAX_PER_HOST
628		770
629	The maximum number of persistent connections to keep open (default: 8).	771	The maximum number of concurrent connections to the same host (identified
		772	by the hostname). If the limit is exceeded, then the additional requests
		773	are queued until previous connections are closed.
630		774
631	Not implemented currently.	775	The default value for this is C<4>, and it is highly advisable to not
632		776	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		777
639	=item $AnyEvent::HTTP::ACTIVE	778	=item $AnyEvent::HTTP::ACTIVE
640		779
641	The number of active connections. This is not the number of currently	780	The number of active connections. This is not the number of currently
642	running requests, but the number of currently open and non-idle TCP	781	running requests, but the number of currently open and non-idle TCP
…		…
645	=back	784	=back
646		785
647	=cut	786	=cut
648		787
649	sub set_proxy($) {	788	sub set_proxy($) {
		789	if (length $_[0]) {
650	$PROXY = [$2, $3 \|\| 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;	790	$_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
		791	or Carp::croak "$_[0]: invalid proxy URL";
		792	$PROXY = [$2, $3 \|\| 3128, $1]
		793	} else {
		794	undef $PROXY;
		795	}
651	}	796	}
652		797
653	# initialise proxy from environment	798	# initialise proxy from environment
		799	eval {
654	set_proxy $ENV{http_proxy};	800	set_proxy $ENV{http_proxy};
		801	};
655		802
656	=head1 SEE ALSO	803	=head1 SEE ALSO
657		804
658	L<AnyEvent>.	805	L<AnyEvent>.
659		806

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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 1.54 by root, Wed Jun 16 18:09:52 2010 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 1.54 by root, Wed Jun 16 18:09:52 2010 UTC