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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.9 by root, Wed Jun 4 13:51:53 2008 UTC vs.
Revision 1.36 by root, Fri Nov 21 06:56:05 2008 UTC

… …
3AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client 3AnyEvent::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
11This module is an L<AnyEvent> user, you need to make sure that you use and 15This module is an L<AnyEvent> user, you need to make sure that you use and
12run a supported event loop. 16run a supported event loop.
17
18This module implements a simple, stateless and non-blocking HTTP
19client. It supports GET, POST and other request methods, cookies and more,
20all on a very low level. It can follow redirects supports proxies and
21automatically limits the number of connections to the values specified in
22the RFC.
23
24It should generally be a "good client" that is enough for most HTTP
25tasks. Simple tasks should be simple, but complex tasks should still be
26possible as the user retains control over request and response headers.
27
28The caller is responsible for authentication management, cookies (if
29the simplistic implementation in this module doesn't suffice), referer
30and other high-level protocol details for which this module offers only
31limited support.
13 32
14=head2 METHODS 33=head2 METHODS
15 34
16=over 4 35=over 4
17 36
… …
29use AnyEvent::Socket (); 48use AnyEvent::Socket ();
30use AnyEvent::Handle (); 49use AnyEvent::Handle ();
31 50
32use base Exporter::; 51use base Exporter::;
33 52
34our $VERSION = '1.0'; 53our $VERSION = '1.1';
35 54
36our @EXPORT = qw(http_get http_request); 55our @EXPORT = qw(http_get http_post http_head http_request);
37 56
38our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; 57our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
39our $MAX_RECURSE = 10; 58our $MAX_RECURSE = 10;
40our $MAX_PERSISTENT = 8; 59our $MAX_PERSISTENT = 8;
41our $PERSISTENT_TIMEOUT = 2; 60our $PERSISTENT_TIMEOUT = 2;
42our $TIMEOUT = 300; 61our $TIMEOUT = 300;
43 62
44# changing these is evil 63# changing these is evil
45our $MAX_PERSISTENT_PER_HOST = 2; 64our $MAX_PERSISTENT_PER_HOST = 2;
46our $MAX_PER_HOST = 4; # not respected yet :( 65our $MAX_PER_HOST = 4;
47 66
48our $PROXY; 67our $PROXY;
68our $ACTIVE = 0;
49 69
50my %KA_COUNT; # number of open keep-alive connections per host 70my %KA_COUNT; # number of open keep-alive connections per host
71my %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
54Executes an HTTP-GET request. See the http_request function for details on 75Executes an HTTP-GET request. See the http_request function for details on
55additional parameters. 76additional parameters and the return value.
56 77
57=item http_head $url, key => value..., $cb->($data, $headers) 78=item http_head $url, key => value..., $cb->($data, $headers)
58 79
59Executes an HTTP-HEAD request. See the http_request function for details on 80Executes an HTTP-HEAD request. See the http_request function for details
60additional parameters. 81on additional parameters and the return value.
61 82
62=item http_post $url, $body, key => value..., $cb->($data, $headers) 83=item http_post $url, $body, key => value..., $cb->($data, $headers)
63 84
64Executes an HTTP-POST request with a request body of C<$bod>. See the 85Executes an HTTP-POST request with a request body of C<$body>. See the
65http_request function for details on additional parameters. 86http_request function for details on additional parameters and the return
87value.
66 88
67=item http_request $method => $url, key => value..., $cb->($data, $headers) 89=item http_request $method => $url, key => value..., $cb->($data, $headers)
68 90
69Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL 91Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
70must be an absolute http or https URL. 92must be an absolute http or https URL.
93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
71 98
72The callback will be called with the response data as first argument 99The callback will be called with the response data as first argument
73(or C<undef> if it wasn't available due to errors), and a hash-ref with 100(or C<undef> if it wasn't available due to errors), and a hash-ref with
74response headers as second argument. 101response headers as second argument.
75 102
76All the headers in that hash are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
77headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
78C<Reason> contain the three parts of the HTTP Status-Line of the same 105contain the three parts of the HTTP Status-Line of the same name. The
79name. 106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
109If the server sends a header multiple times, then their contents will be
110joined together with a comma (C<,>), as per the HTTP spec.
80 111
81If an internal error occurs, such as not being able to resolve a hostname, 112If an internal error occurs, such as not being able to resolve a hostname,
82then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> 113then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>
83and the C<Reason> pseudo-header will contain an error message. 114and the C<Reason> pseudo-header will contain an error message.
84 115
… …
104Whether to recurse requests or not, e.g. on redirects, authentication 135Whether to recurse requests or not, e.g. on redirects, authentication
105retries and so on, and how often to do so. 136retries and so on, and how often to do so.
106 137
107=item headers => hashref 138=item headers => hashref
108 139
109The request headers to use. 140The request headers to use. Currently, C<http_request> may provide its
141own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
142and will provide defaults for C<User-Agent:> and C<Referer:>.
110 143
111=item timeout => $seconds 144=item timeout => $seconds
112 145
113The time-out to use for various stages - each connect attempt will reset 146The time-out to use for various stages - each connect attempt will reset
114the timeout, as will read or write activity. Default timeout is 5 minutes. 147the timeout, as will read or write activity. Default timeout is 5 minutes.
… …
123 156
124=item body => $string 157=item body => $string
125 158
126The request body, usually empty. Will be-sent as-is (future versions of 159The request body, usually empty. Will be-sent as-is (future versions of
127this module might offer more options). 160this module might offer more options).
161
162=item cookie_jar => $hash_ref
163
164Passing this parameter enables (simplified) cookie-processing, loosely
165based on the original netscape specification.
166
167The C<$hash_ref> must be an (initially empty) hash reference which will
168get updated automatically. It is possible to save the cookie_jar to
169persistent storage with something like JSON or Storable, but this is not
170recommended, as expire times are currently being ignored.
171
172Note that this cookie implementation is not of very high quality, nor
173meant to be complete. If you want complete cookie management you have to
174do that on your own. C<cookie_jar> is meant as a quick fix to get some
175cookie-using sites working. Cookies are a privacy disaster, do not use
176them unless required to.
128 177
129=back 178=back
130 179
131Example: make a simple HTTP GET request for http://www.nethype.de/ 180Example: make a simple HTTP GET request for http://www.nethype.de/
132 181
… …
146 use Data::Dumper; 195 use Data::Dumper;
147 print Dumper $hdr; 196 print Dumper $hdr;
148 } 197 }
149 ; 198 ;
150 199
200Example: make another simple HTTP GET request, but immediately try to
201cancel 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 $request;
209
151=cut 210=cut
152 211
212sub _slot_schedule;
213sub _slot_schedule($) {
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
236sub _get_slot($$) {
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238
239 _slot_schedule $_[0];
240}
241
242our $qr_nl = qr<\015?\012>;
243our $qr_nlnl = qr<\015?\012\015?\012>;
244
153sub http_request($$$;@) { 245sub http_request($$@) {
154 my $cb = pop; 246 my $cb = pop;
155 my ($method, $url, %arg) = @_; 247 my ($method, $url, %arg) = @_;
156 248
157 my %hdr; 249 my %hdr;
158 250
… …
162 while (my ($k, $v) = each %$hdr) { 254 while (my ($k, $v) = each %$hdr) {
163 $hdr{lc $k} = $v; 255 $hdr{lc $k} = $v;
164 } 256 }
165 } 257 }
166 258
167 my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; 259 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
168 260
169 return $cb->(undef, { Status => 599, Reason => "recursion limit reached" }) 261 return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })
170 if $recurse < 0; 262 if $recurse < 0;
171 263
172 my $proxy = $arg{proxy} || $PROXY; 264 my $proxy = $arg{proxy} || $PROXY;
173 my $timeout = $arg{timeout} || $TIMEOUT; 265 my $timeout = $arg{timeout} || $TIMEOUT;
174 266
175 $hdr{"user-agent"} ||= $USERAGENT; 267 $hdr{"user-agent"} ||= $USERAGENT;
176 268
177 my ($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, $rpath); # request host, port, path
178 323
179 if ($proxy) { 324 if ($proxy) {
180 ($host, $port, $scheme) = @$proxy; 325 ($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);
181 $path = $url; 326
327 # don't support https requests over https-proxy transport,
328 # can't be done with tls as spec'ed.
329 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
182 } else { 330 } else {
183 ($scheme, my $authority, $path, my $query, my $fragment) = 331 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
184 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
185
186 $port = $scheme eq "http" ? 80
187 : $scheme eq "https" ? 443
188 : return $cb->(undef, { Status => 599, Reason => "$url: only http and https URLs supported" });
189
190 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
191 or return $cb->(undef, { Status => 599, Reason => "$url: unparsable URL" });
192
193 $host = $1;
194 $port = $2 if defined $2;
195
196 $host =~ s/^\[(.*)\]$/$1/;
197 $path .= "?$query" if length $query;
198
199 $path = "/" unless $path;
200
201 $hdr{host} = $host = lc $host;
202 } 332 }
203 333
204 $scheme = lc $scheme; 334 $hdr{host} = $uhost;
205
206 my %state;
207
208 $hdr{"content-length"} = length $arg{body}; 335 $hdr{"content-length"} = length $arg{body};
209 336
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
210 $state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub { 344 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
211 $state{fh} = shift 345 $state{fh} = shift
212 or return $cb->(undef, { Status => 599, Reason => "$!" }); 346 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
347 pop; # free memory, save a tree
213 348
214 delete $state{connect_guard}; # reduce memory usage, save a tree 349 return unless delete $state{connect_guard};
215 350
216 # get handle 351 # get handle
217 $state{handle} = new AnyEvent::Handle 352 $state{handle} = new AnyEvent::Handle
218 fh => $state{fh}, 353 fh => $state{fh},
219 ($scheme eq "https" ? (tls => "connect") : ()); 354 timeout => $timeout;
220 355
221 # limit the number of persistent connections 356 # limit the number of persistent connections
357 # keepalive not yet supported
222 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 358 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
223 ++$KA_COUNT{$_[1]}; 359 ++$KA_COUNT{$_[1]};
224 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 360 $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
361 --$KA_COUNT{$_[1]}
362 };
225 $hdr{connection} = "keep-alive"; 363 $hdr{connection} = "keep-alive";
226 delete $hdr{connection}; # keep-alive not yet supported
227 } else { 364 } else {
228 delete $hdr{connection}; 365 delete $hdr{connection};
229 } 366 }
230 367
231 # (re-)configure handle 368 # (re-)configure handle
232 $state{handle}->timeout ($timeout);
233 $state{handle}->on_error (sub { 369 $state{handle}->on_error (sub {
370 my $errno = "$!";
234 %state = (); 371 %state = ();
235 $cb->(undef, { Status => 599, Reason => "$!" }); 372 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
236 }); 373 });
237 $state{handle}->on_eof (sub { 374 $state{handle}->on_eof (sub {
238 %state = (); 375 %state = ();
239 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); 376 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
240 });
241
242 # send request
243 $state{handle}->push_write (
244 "$method $path HTTP/1.0\015\012"
245 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
246 . "\015\012"
247 . (delete $arg{body})
248 );
249
250 %hdr = (); # reduce memory usage, save a kitten
251
252 # status line
253 $state{handle}->push_read (line => qr/\015?\012/, sub {
254 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
255 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
256
257 my %hdr = ( # response headers
258 HTTPVersion => ",$1",
259 Status => ",$2",
260 Reason => ",$3",
261 ); 377 });
262 378
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
263 # headers, could be optimized a bit 407 # headers, could be optimized a bit
264 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 408 $state{handle}->unshift_read (line => $qr_nlnl, sub {
265 for ("$_[1]\012") { 409 for ("$_[1]\012") {
410 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411
266 # we support spaces in field names, as lotus domino 412 # we support spaces in field names, as lotus domino
267 # creates them. 413 # creates them (actually spaces around seperators
414 # are strictly allowed in http, they are a security issue).
268 $hdr{lc $1} .= ",$2" 415 $hdr{lc $1} .= ",$2"
269 while /\G 416 while /\G
270 ([^:\000-\037]+): 417 ([^:\000-\037]+):
271 [\011\040]* 418 [\011\040]*
272 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 419 ((?: [^\012]+ | \012[\011\040] )*)
273 \015?\012 420 \012
274 /gxc; 421 /gxc;
275 422
276 /\G$/ 423 /\G$/
277 or return $cb->(undef, { Status => 599, Reason => "garbled response headers" }); 424 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
278 } 425 }
279 426
280 substr $_, 0, 1, "" 427 substr $_, 0, 1, ""
281 for values %hdr; 428 for values %hdr;
282 429
283 my $finish = sub { 430 my $finish = sub {
431 $state{handle}->destroy;
432 %state = ();
433
434 # set-cookie processing
435 if ($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/$_[1]{location}";
497 }
498
284 if ($_[1]{Status} =~ /^30[12]$/ && $recurse) { 499 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
500 # apparently, mozilla et al. just change POST to GET here
501 # more research is needed before we do the same
285 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 502 http_request ($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], $_[1]);
511 }
512 };
513
514 if ($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 $finish->($_[0]{rbuf}, \%hdr);
531 });
532 $_[0]->on_eof (undef);
533 $_[0]->on_read (sub { });
534 }
535 }
536 });
537 });
538 };
539
540 # now handle proxy-CONNECT method
541 if ($proxy && $uscheme eq "https") {
542 # oh dear, we have to wrap it into a connect request
543
544 # maybe re-use $uauthority with patched port?
545 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
546 $state{handle}->push_read (line => $qr_nlnl, sub {
547 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
548 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));
549
550 if ($2 == 200) {
551 $rpath = $upath;
552 &$handle_actual_request;
286 } else { 553 } else {
287 $cb->($_[0], $_[1]); 554 %state = ();
555 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
288 } 556 }
289 }; 557 });
290
291 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
292 %state = ();
293 $finish->(undef, \%hdr);
294 } else { 558 } else {
295 if (exists $hdr{"content-length"}) { 559 &$handle_actual_request;
296 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
297 # could cache persistent connection now
298 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
299 # but we don't, due to misdesigns, this is annoyingly complex
300 };
301
302 %state = ();
303 $finish->($_[1], \%hdr);
304 });
305 } else {
306 # too bad, need to read until we get an error or EOF,
307 # no way to detect winged data.
308 $_[0]->on_error (sub {
309 %state = ();
310 $finish->($_[0]{rbuf}, \%hdr);
311 });
312 $_[0]->on_eof (undef);
313 $_[0]->on_read (sub { });
314 }
315 }
316 }); 560 }
561
562 }, sub {
563 $timeout
317 }); 564 };
318 }, sub {
319 $timeout
320 }; 565 };
321 566
322 defined wantarray && AnyEvent::Util::guard { %state = () } 567 defined wantarray && AnyEvent::Util::guard { %state = () }
323} 568}
324 569
325sub http_get($$;@) { 570sub http_get($@) {
326 unshift @_, "GET"; 571 unshift @_, "GET";
327 &http_request 572 &http_request
328} 573}
329 574
330sub http_head($$;@) { 575sub http_head($@) {
331 unshift @_, "HEAD"; 576 unshift @_, "HEAD";
332 &http_request 577 &http_request
333} 578}
334 579
335sub http_post($$$;@) { 580sub http_post($$@) {
581 my $url = shift;
336 unshift @_, "POST", "body"; 582 unshift @_, "POST", $url, "body";
337 &http_request 583 &http_request
338} 584}
339 585
340=back 586=back
341 587
… …
366=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT 612=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
367 613
368The maximum time to cache a persistent connection, in seconds (default: 2). 614The maximum time to cache a persistent connection, in seconds (default: 2).
369 615
370Not implemented currently. 616Not implemented currently.
617
618=item $AnyEvent::HTTP::ACTIVE
619
620The number of active connections. This is not the number of currently
621running requests, but the number of currently open and non-idle TCP
622connections. This number of can be useful for load-leveling.
371 623
372=back 624=back
373 625
374=cut 626=cut
375 627
… …
384 636
385L<AnyEvent>. 637L<AnyEvent>.
386 638
387=head1 AUTHOR 639=head1 AUTHOR
388 640
389 Marc Lehmann <schmorp@schmorp.de> 641 Marc Lehmann <schmorp@schmorp.de>
390 http://home.schmorp.de/ 642 http://home.schmorp.de/
643
644With many thanks to Дмитрий Шалашов, who provided countless
645testcases and bugreports.
391 646
392=cut 647=cut
393 648
3941 6491
395 650

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