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

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.2 by root, Wed Jun 4 11:37:41 2008 UTC vs.
Revision 1.38 by root, Sat Mar 7 03:43:09 2009 UTC

…		…
3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client	3	AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client
4		4
5	=head1 SYNOPSIS	5	=head1 SYNOPSIS
6		6
7	use AnyEvent::HTTP;	7	use AnyEvent::HTTP;
		8
		9	http_get "http://www.nethype.de/", sub { print $_[1] };
		10
		11	# ... do something else here
8		12
9	=head1 DESCRIPTION	13	=head1 DESCRIPTION
10		14
11	This module is an L<AnyEvent> user, you need to make sure that you use and	15	This module is an L<AnyEvent> user, you need to make sure that you use and
12	run a supported event loop.	16	run a supported event loop.
		17
		18	This module implements a simple, stateless and non-blocking HTTP
		19	client. It supports GET, POST and other request methods, cookies and more,
		20	all on a very low level. It can follow redirects supports proxies and
		21	automatically limits the number of connections to the values specified in
		22	the RFC.
		23
		24	It should generally be a "good client" that is enough for most HTTP
		25	tasks. Simple tasks should be simple, but complex tasks should still be
		26	possible as the user retains control over request and response headers.
		27
		28	The caller is responsible for authentication management, cookies (if
		29	the simplistic implementation in this module doesn't suffice), referer
		30	and other high-level protocol details for which this module offers only
		31	limited support.
13		32
14	=head2 METHODS	33	=head2 METHODS
15		34
16	=over 4	35	=over 4
17		36
…		…
29	use AnyEvent::Socket ();	48	use AnyEvent::Socket ();
30	use AnyEvent::Handle ();	49	use AnyEvent::Handle ();
31		50
32	use base Exporter::;	51	use base Exporter::;
33		52
34	our $VERSION = '1.0';	53	our $VERSION = '1.11';
35		54
36	our @EXPORT = qw(http_get http_request);	55	our @EXPORT = qw(http_get http_post http_head http_request);
37		56
38	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";	57	our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
39	our $MAX_REDIRECTS = 10;	58	our $MAX_RECURSE = 10;
40	our $MAX_PERSISTENT = 8;	59	our $MAX_PERSISTENT = 8;
41	our $PERSISTENT_TIMEOUT = 2;	60	our $PERSISTENT_TIMEOUT = 2;
42	our $TIMEOUT = 300;	61	our $TIMEOUT = 300;
43		62
44	# changing these is evil	63	# changing these is evil
45	our $MAX_PERSISTENT_PER_HOST = 2;	64	our $MAX_PERSISTENT_PER_HOST = 2;
46	our $MAX_PER_HOST = 4; # not respected yet :(	65	our $MAX_PER_HOST = 4;
47		66
48	our $PROXY;	67	our $PROXY;
		68	our $ACTIVE = 0;
49		69
50	my %KA_COUNT; # number of open keep-alive connections per host	70	my %KA_COUNT; # number of open keep-alive connections per host
		71	my %CO_SLOT; # number of open connections, and wait queue, per host
51		72
52	=item http_get $url, key => value..., $cb->($data, $headers)	73	=item http_get $url, key => value..., $cb->($data, $headers)
53		74
54	Executes an HTTP-GET request. See the http_request function for details on	75	Executes an HTTP-GET request. See the http_request function for details on
55	additional parameters.	76	additional parameters and the return value.
		77
		78	=item http_head $url, key => value..., $cb->($data, $headers)
		79
		80	Executes an HTTP-HEAD request. See the http_request function for details
		81	on additional parameters and the return value.
		82
		83	=item http_post $url, $body, key => value..., $cb->($data, $headers)
		84
		85	Executes an HTTP-POST request with a request body of C<$body>. See the
		86	http_request function for details on additional parameters and the return
		87	value.
56		88
57	=item http_request $method => $url, key => value..., $cb->($data, $headers)	89	=item http_request $method => $url, key => value..., $cb->($data, $headers)
58		90
59	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL	91	Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
60	must be an absolute http or https URL.	92	must be an absolute http or https URL.
		93
		94	When called in void context, nothing is returned. In other contexts,
		95	C<http_request> returns a "cancellation guard" - you have to keep the
		96	object at least alive until the callback get called. If the object gets
		97	destroyed before the callbakc is called, the request will be cancelled.
61		98
62	The callback will be called with the response data as first argument	99	The callback will be called with the response data as first argument
63	(or C<undef> if it wasn't available due to errors), and a hash-ref with	100	(or C<undef> if it wasn't available due to errors), and a hash-ref with
64	response headers as second argument.	101	response headers as second argument.
65		102
66	All the headers in that has are lowercased. In addition to the response	103	All the headers in that hash are lowercased. In addition to the response
67	headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and	104	headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
68	C<Reason> contain the three parts of the HTTP Status-Line of the same	105	contain the three parts of the HTTP Status-Line of the same name. The
69	name.	106	pseudo-header C<URL> contains the original URL (which can differ from the
		107	requested URL when following redirects).
		108
		109	If the server sends a header multiple times, then their contents will be
		110	joined together with a comma (C<,>), as per the HTTP spec.
70		111
71	If an internal error occurs, such as not being able to resolve a hostname,	112	If an internal error occurs, such as not being able to resolve a hostname,
72	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>	113	then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>
73	and the C<Reason> pseudo-header will contain an error message.	114	and the C<Reason> pseudo-header will contain an error message.
74		115
		116	A typical callback might look like this:
		117
		118	sub {
		119	my ($body, $hdr) = @_;
		120
		121	if ($hdr->{Status} =~ /^2/) {
		122	... everything should be ok
		123	} else {
		124	print "error, $hdr->{Status} $hdr->{Reason}\n";
		125	}
		126	}
		127
75	Additional parameters are key-value pairs, and are fully optional. They	128	Additional parameters are key-value pairs, and are fully optional. They
76	include:	129	include:
77		130
78	=over 4	131	=over 4
79		132
80	=item recurse => $boolean (default: true)	133	=item recurse => $count (default: $MAX_RECURSE)
81		134
82	Whether to recurse requests or not, e.g. on redirects, authentication	135	Whether to recurse requests or not, e.g. on redirects, authentication
83	retries and so on.	136	retries and so on, and how often to do so.
84		137
85	=item headers => hashref	138	=item headers => hashref
86		139
87	The request headers to use.	140	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	and will provide defaults for C<User-Agent:> and C<Referer:>.
88		143
89	=item timeout => $seconds	144	=item timeout => $seconds
90		145
91	The time-out to use for various stages - each connect attempt will reset	146	The time-out to use for various stages - each connect attempt will reset
92	the timeout, as will read or write activity. Default timeout is 5 minutes.	147	the timeout, as will read or write activity. Default timeout is 5 minutes.
…		…
97	default proxy (as specified by C<$ENV{http_proxy}>) is used.	152	default proxy (as specified by C<$ENV{http_proxy}>) is used.
98		153
99	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for	154	C<$scheme> must be either missing or C<http> for HTTP, or C<https> for
100	HTTPS.	155	HTTPS.
101		156
		157	=item body => $string
		158
		159	The request body, usually empty. Will be-sent as-is (future versions of
		160	this module might offer more options).
		161
		162	=item cookie_jar => $hash_ref
		163
		164	Passing this parameter enables (simplified) cookie-processing, loosely
		165	based on the original netscape specification.
		166
		167	The C<$hash_ref> must be an (initially empty) hash reference which will
		168	get updated automatically. It is possible to save the cookie_jar to
		169	persistent storage with something like JSON or Storable, but this is not
		170	recommended, as expire times are currently being ignored.
		171
		172	Note that this cookie implementation is not of very high quality, nor
		173	meant to be complete. If you want complete cookie management you have to
		174	do that on your own. C<cookie_jar> is meant as a quick fix to get some
		175	cookie-using sites working. Cookies are a privacy disaster, do not use
		176	them unless required to.
		177
102	=back	178	=back
103		179
104	=back	180	Example: make a simple HTTP GET request for http://www.nethype.de/
		181
		182	http_request GET => "http://www.nethype.de/", sub {
		183	my ($body, $hdr) = @_;
		184	print "$body\n";
		185	};
		186
		187	Example: make a HTTP HEAD request on https://www.google.com/, use a
		188	timeout of 30 seconds.
		189
		190	http_request
		191	GET => "https://www.google.com",
		192	timeout => 30,
		193	sub {
		194	my ($body, $hdr) = @_;
		195	use Data::Dumper;
		196	print Dumper $hdr;
		197	}
		198	;
		199
		200	Example: make another simple HTTP GET request, but immediately try to
		201	cancel it.
		202
		203	my $request = http_request GET => "http://www.nethype.de/", sub {
		204	my ($body, $hdr) = @_;
		205	print "$body\n";
		206	};
		207
		208	undef $request;
105		209
106	=cut	210	=cut
107		211
		212	sub _slot_schedule;
		213	sub _slot_schedule($) {
		214	my $host = shift;
		215
		216	while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) {
		217	if (my $cb = shift @{ $CO_SLOT{$host}[1] }) {
		218	# somebody wants that slot
		219	++$CO_SLOT{$host}[0];
		220	++$ACTIVE;
		221
		222	$cb->(AnyEvent::Util::guard {
		223	--$ACTIVE;
		224	--$CO_SLOT{$host}[0];
		225	_slot_schedule $host;
		226	});
		227	} else {
		228	# nobody wants the slot, maybe we can forget about it
		229	delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0];
		230	last;
		231	}
		232	}
		233	}
		234
		235	# wait for a free slot on host, call callback
		236	sub _get_slot($$) {
		237	push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
		238
		239	_slot_schedule $_[0];
		240	}
		241
		242	our $qr_nl = qr<\015?\012>;
		243	our $qr_nlnl = qr<\015?\012\015?\012>;
		244
108	sub http_request($$$;@) {	245	sub http_request($$@) {
109	my $cb = pop;	246	my $cb = pop;
110	my ($method, $url, %arg) = @_;	247	my ($method, $url, %arg) = @_;
111		248
112	my %hdr;	249	my %hdr;
113		250
		251	$method = uc $method;
		252
114	if (my $hdr = delete $arg{headers}) {	253	if (my $hdr = $arg{headers}) {
115	while (my ($k, $v) = each %$hdr) {	254	while (my ($k, $v) = each %$hdr) {
116	$hdr{lc $k} = $v;	255	$hdr{lc $k} = $v;
117	}	256	}
118	}	257	}
119		258
		259	my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
		260
		261	return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })
		262	if $recurse < 0;
		263
120	my $proxy = $arg{proxy} \|\| $PROXY;	264	my $proxy = $arg{proxy} \|\| $PROXY;
121	my $timeout = $arg{timeout} \|\| $TIMEOUT;	265	my $timeout = $arg{timeout} \|\| $TIMEOUT;
122		266
123	$hdr{"user-agent"} \|\|= $USERAGENT;	267	$hdr{"user-agent"} \|\|= $USERAGENT;
124		268
125	my ($host, $port, $path, $scheme);	269	my ($uscheme, $uauthority, $upath, $query, $fragment) =
		270	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
		271
		272	$uscheme = lc $uscheme;
		273
		274	my $uport = $uscheme eq "http" ? 80
		275	: $uscheme eq "https" ? 443
		276	: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
		277
		278	$hdr{referer} \|\|= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
		279
		280	$uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
		281	or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });
		282
		283	my $uhost = $1;
		284	$uport = $2 if defined $2;
		285
		286	$uhost =~ s/^\[(.*)\]$/$1/;
		287	$upath .= "?$query" if length $query;
		288
		289	$upath =~ s%^/?%/%;
		290
		291	# cookie processing
		292	if (my $jar = $arg{cookie_jar}) {
		293	%$jar = () if $jar->{version} != 1;
		294
		295	my @cookie;
		296
		297	while (my ($chost, $v) = each %$jar) {
		298	if ($chost =~ /^\./) {
		299	next unless $chost eq substr $uhost, -length $chost;
		300	} elsif ($chost =~ /\./) {
		301	next unless $chost eq $uhost;
		302	} else {
		303	next;
		304	}
		305
		306	while (my ($cpath, $v) = each %$v) {
		307	next unless $cpath eq substr $upath, 0, length $cpath;
		308
		309	while (my ($k, $v) = each %$v) {
		310	next if $uscheme ne "https" && exists $v->{secure};
		311	my $value = $v->{value};
		312	$value =~ s/([\\"])/\\$1/g;
		313	push @cookie, "$k=\"$value\"";
		314	}
		315	}
		316	}
		317
		318	$hdr{cookie} = join "; ", @cookie
		319	if @cookie;
		320	}
		321
		322	my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
126		323
127	if ($proxy) {	324	if ($proxy) {
128	($host, $port, $scheme) = @$proxy;	325	($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
129	$path = $url;	326
		327	# don't support https requests over https-proxy transport,
		328	# can't be done with tls as spec'ed, unless you double-encrypt.
		329	$rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
130	} else {	330	} else {
131	($scheme, my $authority, $path, my $query, my $fragment) =	331	($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
132	$url =~ m\|(?:([^:/?#]+):)?(?://([^/?#]))?([^?#])(?:\?([^#]))?(?:#(.))?\|;
133
134	$port = $scheme eq "http" ? 80
135	: $scheme eq "https" ? 443
136	: croak "$url: only http and https URLs supported";
137
138	$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
139	or croak "$authority: unparsable URL";
140
141	$host = $1;
142	$port = $2 if defined $2;
143
144	$host =~ s/^\[(.*)\]$/$1/;
145	$path .= "?$query" if length $query;
146
147	$path = "/" unless $path;
148
149	$hdr{host} = $host = lc $host;
150	}	332	}
151		333
152	$scheme = lc $scheme;	334	$hdr{host} = $uhost;
153
154	my %state;
155
156	my $body = "";
157	$state{body} = $body;
158
159	$hdr{"content-length"} = length $body;	335	$hdr{"content-length"} = length $arg{body};
160		336
		337	my %state = (connect_guard => 1);
		338
		339	_get_slot $uhost, sub {
		340	$state{slot_guard} = shift;
		341
		342	return unless $state{connect_guard};
		343
161	$state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub {	344	$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
162	$state{fh} = shift	345	$state{fh} = shift
163	or return $cb->(undef, { Status => 599, Reason => "$!" });	346	or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
		347	pop; # free memory, save a tree
164		348
165	delete $state{connect_guard}; # reduce memory usage, save a tree	349	return unless delete $state{connect_guard};
166		350
167	# get handle	351	# get handle
168	$state{handle} = new AnyEvent::Handle	352	$state{handle} = new AnyEvent::Handle
169	fh => $state{fh},	353	fh => $state{fh},
170	($scheme eq "https" ? (tls => "connect") : ());	354	timeout => $timeout;
171		355
172	# limit the number of persistent connections	356	# limit the number of persistent connections
		357	# keepalive not yet supported
173	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {	358	if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
174	++$KA_COUNT{$_[1]};	359	++$KA_COUNT{$_[1]};
175	$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };	360	$state{handle}{ka_count_guard} = AnyEvent::Util::guard {
		361	--$KA_COUNT{$_[1]}
		362	};
176	$hdr{connection} = "keep-alive";	363	$hdr{connection} = "keep-alive";
177	delete $hdr{connection}; # keep-alive not yet supported
178	} else {	364	} else {
179	delete $hdr{connection};	365	delete $hdr{connection};
180	}	366	}
181		367
182	# (re-)configure handle	368	# (re-)configure handle
183	$state{handle}->timeout ($timeout);
184	$state{handle}->on_error (sub {	369	$state{handle}->on_error (sub {
		370	my $errno = "$!";
185	%state = ();	371	%state = ();
186	$cb->(undef, { Status => 599, Reason => "$!" });	372	$cb->(undef, { Status => 599, Reason => $errno, URL => $url });
187	});	373	});
188	$state{handle}->on_eof (sub {	374	$state{handle}->on_eof (sub {
189	%state = ();	375	%state = ();
190	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });	376	$cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
191	});
192
193	# send request
194	$state{handle}->push_write (
195	"\U$method\E $path HTTP/1.0\015\012"
196	. (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
197	. "\015\012"
198	. (delete $state{body})
199	);
200
201	%hdr = (); # reduce memory usage, save a kitten
202
203	# status line
204	$state{handle}->push_read (line => qr/\015?\012/, sub {
205	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
206	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
207
208	my %hdr = ( # response headers
209	HTTPVersion => ",$1",
210	Status => ",$2",
211	Reason => ",$3",
212	);	377	});
213		378
		379	$state{handle}->starttls ("connect") if $rscheme eq "https";
		380
		381	# handle actual, non-tunneled, request
		382	my $handle_actual_request = sub {
		383	$state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
		384
		385	# send request
		386	$state{handle}->push_write (
		387	"$method $rpath HTTP/1.0\015\012"
		388	. (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
		389	. "\015\012"
		390	. (delete $arg{body})
		391	);
		392
		393	%hdr = (); # reduce memory usage, save a kitten
		394
		395	# status line
		396	$state{handle}->push_read (line => $qr_nl, sub {
		397	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		398	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
		399
		400	my %hdr = ( # response headers
		401	HTTPVersion => ",$1",
		402	Status => ",$2",
		403	Reason => ",$3",
		404	URL => ",$url"
		405	);
		406
214	# headers, could be optimized a bit	407	# headers, could be optimized a bit
215	$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {	408	$state{handle}->unshift_read (line => $qr_nlnl, sub {
216	for ("$_[1]\012") {	409	for ("$_[1]\012") {
		410	y/\015//d; # weed out any \015, as they show up in the weirdest of places.
		411
217	# we support spaces in field names, as lotus domino	412	# we support spaces in field names, as lotus domino
218	# creates them.	413	# creates them (actually spaces around seperators
		414	# are strictly allowed in http, they are a security issue).
219	$hdr{lc $1} .= ",$2"	415	$hdr{lc $1} .= ",$2"
220	while /\G	416	while /\G
221	([^:\000-\037]+):	417	([^:\000-\037]+):
222	[\011\040]*	418	[\011\040]*
223	((?: [^\015\012]+ \| \015?\012[\011\040] )*)	419	((?: [^\012]+ \| \012[\011\040] )*)
224	\015?\012	420	\012
225	/gxc;	421	/gxc;
226		422
227	/\G$/	423	/\G$/
228	or return $cb->(undef, { Status => 599, Reason => "garbled response headers" });	424	or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
229	}	425	}
230		426
231	substr $_, 0, 1, ""	427	substr $_, 0, 1, ""
232	for values %hdr;	428	for values %hdr;
233		429
234	if (exists $hdr{"content-length"}) {	430	my $finish = sub {
235	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {	431	$state{handle}->destroy;
236	# could cache persistent connection now	432	%state = ();
237	if ($hdr{connection} =~ /\bkeep-alive\b/i) {	433
238	# but we don't, due to misdesigns, this is annoyingly complex	434	# set-cookie processing
		435	if ($arg{cookie_jar}) {
		436	for ($hdr{"set-cookie"}) {
		437	# parse NAME=VALUE
		438	my @kv;
		439
		440	while (/\G\s* ([^=;,[:space:]]+) \s=\s (?: "((?:[^\\"]+\|\\.))" \| ([^=;,[:space:]]) )/gcxs) {
		441	my $name = $1;
		442	my $value = $3;
		443
		444	unless ($value) {
		445	$value = $2;
		446	$value =~ s/\\(.)/$1/gs;
		447	}
		448
		449	push @kv, $name => $value;
		450
		451	last unless /\G\s*;/gc;
		452	}
		453
		454	last unless @kv;
		455
		456	my $name = shift @kv;
		457	my %kv = (value => shift @kv, @kv);
		458
		459	my $cdom;
		460	my $cpath = (delete $kv{path}) \|\| "/";
		461
		462	if (exists $kv{domain}) {
		463	$cdom = delete $kv{domain};
		464
		465	$cdom =~ s/^\.?/./; # make sure it starts with a "."
		466
		467	next if $cdom =~ /\.$/;
		468
		469	# this is not rfc-like and not netscape-like. go figure.
		470	my $ndots = $cdom =~ y/.//;
		471	next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
		472	} else {
		473	$cdom = $uhost;
		474	}
		475
		476	# store it
		477	$arg{cookie_jar}{version} = 1;
		478	$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
		479
		480	redo if /\G\s*,/gc;
		481	}
		482	}
		483
		484	# microsoft and other shitheads don't give a shit for following standards,
		485	# try to support some common forms of broken Location headers.
		486	if ($_[1]{location} !~ /^(?: $ \| [^:\/?\#]+ : )/x) {
		487	$_[1]{location} =~ s/^\.\/+//;
		488
		489	my $url = "$rscheme://$uhost:$uport";
		490
		491	unless ($_[1]{location} =~ s/^\///) {
		492	$url .= $upath;
		493	$url =~ s/\/[^\/]*$//;
		494	}
		495
		496	$_[1]{location} = "$url/$_[1]{location}";
		497	}
		498
		499	if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
		500	# apparently, mozilla et al. just change POST to GET here
		501	# more research is needed before we do the same
		502	http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
		503	} elsif ($_[1]{Status} == 303 && $recurse) {
		504	# even http/1.1 is unclear on how to mutate the method
		505	$method = "GET" unless $method eq "HEAD";
		506	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
		507	} elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET\|HEAD)$/) {
		508	http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
		509	} else {
		510	$cb->($_[0], $_[1]);
		511	}
239	};	512	};
240		513
		514	if ($hdr{Status} =~ /^(?:1..\|204\|304)$/ or $method eq "HEAD") {
		515	$finish->(undef, \%hdr);
		516	} else {
		517	if (exists $hdr{"content-length"}) {
		518	$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
		519	# could cache persistent connection now
		520	if ($hdr{connection} =~ /\bkeep-alive\b/i) {
		521	# but we don't, due to misdesigns, this is annoyingly complex
		522	};
		523
		524	$finish->($_[1], \%hdr);
		525	});
		526	} else {
		527	# too bad, need to read until we get an error or EOF,
		528	# no way to detect winged data.
		529	$_[0]->on_error (sub {
		530	# delete ought to be more efficient, as we would have to make
		531	# a copy otherwise as $_[0] gets destroyed.
		532	$finish->(delete $_[0]{rbuf}, \%hdr);
		533	});
		534	$_[0]->on_eof (undef);
		535	$_[0]->on_read (sub { });
		536	}
		537	}
		538	});
		539	});
		540	};
		541
		542	# now handle proxy-CONNECT method
		543	if ($proxy && $uscheme eq "https") {
		544	# oh dear, we have to wrap it into a connect request
		545
		546	# maybe re-use $uauthority with patched port?
		547	$state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
		548	$state{handle}->push_read (line => $qr_nlnl, sub {
		549	$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
		550	or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));
		551
		552	if ($2 == 200) {
		553	$rpath = $upath;
		554	&$handle_actual_request;
		555	} else {
241	%state = ();	556	%state = ();
242	$cb->($_[1], \%hdr);	557	$cb->(undef, { Status => $2, Reason => $3, URL => $url });
243	});	558	}
244	} else {
245	# too bad, need to read until we get an error or EOF,
246	# no way to detect winged data.
247	$_[0]->on_error (sub {
248	%state = ();
249	$cb->($_[0]{rbuf}, \%hdr);
250	});
251	$_[0]->on_eof (undef);
252	$_[0]->on_read (sub { });
253	}	559	});
		560	} else {
		561	&$handle_actual_request;
254	});	562	}
		563
		564	}, sub {
		565	$timeout
255	});	566	};
256	}, sub {
257	$timeout
258	};	567	};
259		568
260	defined wantarray && AnyEvent::Util::guard { %state = () }	569	defined wantarray && AnyEvent::Util::guard { %state = () }
261	}	570	}
262		571
263	sub http_get($$;@) {	572	sub http_get($@) {
264	unshift @_, "GET";	573	unshift @_, "GET";
265	&http_request	574	&http_request
266	}	575	}
267		576
		577	sub http_head($@) {
		578	unshift @_, "HEAD";
		579	&http_request
		580	}
		581
		582	sub http_post($$@) {
		583	my $url = shift;
		584	unshift @_, "POST", $url, "body";
		585	&http_request
		586	}
		587
		588	=back
		589
268	=head2 GLOBAL FUNCTIONS AND VARIABLES	590	=head2 GLOBAL FUNCTIONS AND VARIABLES
269		591
270	=over 4	592	=over 4
271		593
272	=item AnyEvent::HTTP::set_proxy "proxy-url"	594	=item AnyEvent::HTTP::set_proxy "proxy-url"
273		595
274	Sets the default proxy server to use. The proxy-url must begin with a	596	Sets the default proxy server to use. The proxy-url must begin with a
275	string of the form C<http://host:port> (optionally C<https:...>).	597	string of the form C<http://host:port> (optionally C<https:...>).
276		598
277	=item $AnyEvent::HTTP::MAX_REDIRECTS	599	=item $AnyEvent::HTTP::MAX_RECURSE
278		600
279	The default value for the C<max_redirects> request parameter	601	The default value for the C<recurse> request parameter (default: C<10>).
280	(default: C<10>).
281		602
282	=item $AnyEvent::HTTP::USERAGENT	603	=item $AnyEvent::HTTP::USERAGENT
283		604
284	The default value for the C<User-Agent> header (the default is	605	The default value for the C<User-Agent> header (the default is
285	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).	606	C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
286		607
287	=item $AnyEvent::HTTP::MAX_PERSISTENT	608	=item $AnyEvent::HTTP::MAX_PERSISTENT
288		609
289	The maximum number of persistent connections to keep open (default: 8).	610	The maximum number of persistent connections to keep open (default: 8).
290		611
		612	Not implemented currently.
		613
291	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT	614	=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
292		615
293	The maximum time to cache a persistent connection, in seconds (default: 2).	616	The maximum time to cache a persistent connection, in seconds (default: 2).
		617
		618	Not implemented currently.
		619
		620	=item $AnyEvent::HTTP::ACTIVE
		621
		622	The number of active connections. This is not the number of currently
		623	running requests, but the number of currently open and non-idle TCP
		624	connections. This number of can be useful for load-leveling.
294		625
295	=back	626	=back
296		627
297	=cut	628	=cut
298		629
…		…
307		638
308	L<AnyEvent>.	639	L<AnyEvent>.
309		640
310	=head1 AUTHOR	641	=head1 AUTHOR
311		642
312	Marc Lehmann <schmorp@schmorp.de>	643	Marc Lehmann <schmorp@schmorp.de>
313	http://home.schmorp.de/	644	http://home.schmorp.de/
		645
		646	With many thanks to Дмитрий Шалашов, who provided countless
		647	testcases and bugreports.
314		648
315	=cut	649	=cut
316		650
317	1	651	1
318		652

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Comparing AnyEvent-HTTP/HTTP.pm (file contents): Revision 1.2 by root, Wed Jun 4 11:37:41 2008 UTC vs. Revision 1.38 by root, Sat Mar 7 03:43:09 2009 UTC

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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.2 by root, Wed Jun 4 11:37:41 2008 UTC vs.
Revision 1.38 by root, Sat Mar 7 03:43:09 2009 UTC