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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.10 by root, Thu Jun 5 13:06:43 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<$method> (e.g. C<GET>, C<POST>). The URL
70must be an absolute http or https URL. 92must be an absolute http or https URL.
93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
71 98
72The callback will be called with the response data as first argument 99The callback will be called with the response data as first argument
73(or C<undef> if it wasn't available due to errors), and a hash-ref with 100(or C<undef> if it wasn't available due to errors), and a hash-ref with
74response headers as second argument. 101response headers as second argument.
75 102
76All the headers in that hash are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
77headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
78C<Reason> contain the three parts of the HTTP Status-Line of the same 105contain the three parts of the HTTP Status-Line of the same name. The
106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
79name. If the server sends a header multiple lines, then their contents 109If the server sends a header multiple times, then their contents will be
80will be joined together with C<\x00>. 110joined together with a comma (C<,>), as per the HTTP spec.
81 111
82If an internal error occurs, such as not being able to resolve a hostname, 112If an internal error occurs, such as not being able to resolve a hostname,
83then C<$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>
84and the C<Reason> pseudo-header will contain an error message. 114and the C<Reason> pseudo-header will contain an error message.
85 115
… …
105Whether to recurse requests or not, e.g. on redirects, authentication 135Whether to recurse requests or not, e.g. on redirects, authentication
106retries and so on, and how often to do so. 136retries and so on, and how often to do so.
107 137
108=item headers => hashref 138=item headers => hashref
109 139
110The 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:>.
111 143
112=item timeout => $seconds 144=item timeout => $seconds
113 145
114The 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
115the 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.
… …
163 use Data::Dumper; 195 use Data::Dumper;
164 print Dumper $hdr; 196 print Dumper $hdr;
165 } 197 }
166 ; 198 ;
167 199
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 $request;
209
168=cut 210=cut
169 211
212sub _slot_schedule;
213sub _slot_schedule($) {
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($$) {
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238
239 _slot_schedule $_[0];
240}
241
242our $qr_nl = qr<\015?\012>;
243our $qr_nlnl = qr<\015?\012\015?\012>;
244
170sub http_request($$$;@) { 245sub http_request($$@) {
171 my $cb = pop; 246 my $cb = pop;
172 my ($method, $url, %arg) = @_; 247 my ($method, $url, %arg) = @_;
173 248
174 my %hdr; 249 my %hdr;
175 250
… …
179 while (my ($k, $v) = each %$hdr) { 254 while (my ($k, $v) = each %$hdr) {
180 $hdr{lc $k} = $v; 255 $hdr{lc $k} = $v;
181 } 256 }
182 } 257 }
183 258
184 my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; 259 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
185 260
186 return $cb->(undef, { Status => 599, Reason => "recursion limit reached" }) 261 return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })
187 if $recurse < 0; 262 if $recurse < 0;
188 263
189 my $proxy = $arg{proxy} || $PROXY; 264 my $proxy = $arg{proxy} || $PROXY;
190 my $timeout = $arg{timeout} || $TIMEOUT; 265 my $timeout = $arg{timeout} || $TIMEOUT;
191 266
192 $hdr{"user-agent"} ||= $USERAGENT; 267 $hdr{"user-agent"} ||= $USERAGENT;
193 268
194 my ($scheme, $authority, $upath, $query, $fragment) = 269 my ($uscheme, $uauthority, $upath, $query, $fragment) =
195 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; 270 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
196 271
197 $scheme = lc $scheme; 272 $uscheme = lc $uscheme;
198 273
199 my $uport = $scheme eq "http" ? 80 274 my $uport = $uscheme eq "http" ? 80
200 : $scheme eq "https" ? 443 275 : $uscheme eq "https" ? 443
201 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" }); 276 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
202 277
278 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
279
203 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 280 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
204 or return $cb->(undef, { Status => 599, Reason => "unparsable URL" }); 281 or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });
205 282
206 my $uhost = $1; 283 my $uhost = $1;
207 $uport = $2 if defined $2; 284 $uport = $2 if defined $2;
208 285
209 $uhost =~ s/^\[(.*)\]$/$1/; 286 $uhost =~ s/^\[(.*)\]$/$1/;
… …
211 288
212 $upath =~ s%^/?%/%; 289 $upath =~ s%^/?%/%;
213 290
214 # cookie processing 291 # cookie processing
215 if (my $jar = $arg{cookie_jar}) { 292 if (my $jar = $arg{cookie_jar}) {
216 %$jar = () if $jar->{version} < 1; 293 %$jar = () if $jar->{version} != 1;
217 294
218 my @cookie; 295 my @cookie;
219 296
220 while (my ($chost, $v) = each %$jar) { 297 while (my ($chost, $v) = each %$jar) {
298 if ($chost =~ /^\./) {
221 next unless $chost eq substr $uhost, -length $chost; 299 next unless $chost eq substr $uhost, -length $chost;
222 next unless $chost =~ /^\./; 300 } elsif ($chost =~ /\./) {
301 next unless $chost eq $uhost;
302 } else {
303 next;
304 }
223 305
224 while (my ($cpath, $v) = each %$v) { 306 while (my ($cpath, $v) = each %$v) {
225 next unless $cpath eq substr $upath, 0, length $cpath; 307 next unless $cpath eq substr $upath, 0, length $cpath;
226 308
227 while (my ($k, $v) = each %$v) { 309 while (my ($k, $v) = each %$v) {
228 next if $scheme ne "https" && exists $v->{secure}; 310 next if $uscheme ne "https" && exists $v->{secure};
311 my $value = $v->{value};
312 $value =~ s/([\\"])/\\$1/g;
229 push @cookie, "$k=$v->{value}"; 313 push @cookie, "$k=\"$value\"";
230 } 314 }
231 } 315 }
232 } 316 }
233 317
234 $hdr{cookie} = join "; ", @cookie 318 $hdr{cookie} = join "; ", @cookie
235 if @cookie; 319 if @cookie;
236 } 320 }
237 321
238 my ($rhost, $rport, $rpath); # request host, port, path 322 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
239 323
240 if ($proxy) { 324 if ($proxy) {
241 ($rhost, $rport, $scheme) = @$proxy; 325 ($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);
242 $rpath = $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" && $rscheme eq "https";
243 } else { 330 } else {
244 ($rhost, $rport, $rpath) = ($uhost, $uport, $upath); 331 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
245 $hdr{host} = $uhost;
246 } 332 }
247 333
334 $hdr{host} = $uhost;
248 $hdr{"content-length"} = length $arg{body}; 335 $hdr{"content-length"} = length $arg{body};
249 336
250 my %state; 337 my %state = (connect_guard => 1);
251 338
339 _get_slot $uhost, sub {
340 $state{slot_guard} = shift;
341
342 return unless $state{connect_guard};
343
252 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 344 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
253 $state{fh} = shift 345 $state{fh} = shift
254 or return $cb->(undef, { Status => 599, Reason => "$!" }); 346 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
347 pop; # free memory, save a tree
255 348
256 delete $state{connect_guard}; # reduce memory usage, save a tree 349 return unless delete $state{connect_guard};
257 350
258 # get handle 351 # get handle
259 $state{handle} = new AnyEvent::Handle 352 $state{handle} = new AnyEvent::Handle
260 fh => $state{fh}, 353 fh => $state{fh},
261 ($scheme eq "https" ? (tls => "connect") : ()); 354 timeout => $timeout;
262 355
263 # limit the number of persistent connections 356 # limit the number of persistent connections
357 # keepalive not yet supported
264 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 358 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
265 ++$KA_COUNT{$_[1]}; 359 ++$KA_COUNT{$_[1]};
266 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 360 $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
361 --$KA_COUNT{$_[1]}
362 };
267 $hdr{connection} = "keep-alive"; 363 $hdr{connection} = "keep-alive";
268 delete $hdr{connection}; # keep-alive not yet supported
269 } else { 364 } else {
270 delete $hdr{connection}; 365 delete $hdr{connection};
271 } 366 }
272 367
273 # (re-)configure handle 368 # (re-)configure handle
274 $state{handle}->timeout ($timeout);
275 $state{handle}->on_error (sub { 369 $state{handle}->on_error (sub {
370 my $errno = "$!";
276 %state = (); 371 %state = ();
277 $cb->(undef, { Status => 599, Reason => "$!" }); 372 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
278 }); 373 });
279 $state{handle}->on_eof (sub { 374 $state{handle}->on_eof (sub {
280 %state = (); 375 %state = ();
281 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); 376 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
282 });
283
284 # send request
285 $state{handle}->push_write (
286 "$method $rpath HTTP/1.0\015\012"
287 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
288 . "\015\012"
289 . (delete $arg{body})
290 );
291
292 %hdr = (); # reduce memory usage, save a kitten
293
294 # status line
295 $state{handle}->push_read (line => qr/\015?\012/, sub {
296 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
297 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
298
299 my %hdr = ( # response headers
300 HTTPVersion => "\x00$1",
301 Status => "\x00$2",
302 Reason => "\x00$3",
303 ); 377 });
304 378
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
305 # headers, could be optimized a bit 407 # headers, could be optimized a bit
306 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 408 $state{handle}->unshift_read (line => $qr_nlnl, sub {
307 for ("$_[1]\012") { 409 for ("$_[1]\012") {
410 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411
308 # we support spaces in field names, as lotus domino 412 # we support spaces in field names, as lotus domino
309 # creates them. 413 # creates them (actually spaces around seperators
414 # are strictly allowed in http, they are a security issue).
310 $hdr{lc $1} .= "\x00$2" 415 $hdr{lc $1} .= ",$2"
311 while /\G 416 while /\G
312 ([^:\000-\037]+): 417 ([^:\000-\037]+):
313 [\011\040]* 418 [\011\040]*
314 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 419 ((?: [^\012]+ | \012[\011\040] )*)
315 \015?\012 420 \012
316 /gxc; 421 /gxc;
317 422
318 /\G$/ 423 /\G$/
319 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" })); 424 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
320 }
321
322 substr $_, 0, 1, ""
323 for values %hdr;
324
325 my $finish = sub {
326 %state = ();
327
328 # set-cookie processing
329 if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
330 for (split /\x00/, $hdr{"set-cookie"}) {
331 my ($cookie, @arg) = split /;\s*/;
332 my ($name, $value) = split /=/, $cookie, 2;
333 my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
334
335 my $cdom = (delete $kv{domain}) || $uhost;
336 my $cpath = (delete $kv{path}) || "/";
337
338 $cdom =~ s/^.?/./; # make sure it starts with a "."
339
340 my $ndots = $cdom =~ y/.//;
341 next if $ndots < ($cdom =~ /[^.]{3}$/ ? 2 : 3);
342
343 # store it
344 $arg{cookie_jar}{version} = 1;
345 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
346 } 425 }
426
427 substr $_, 0, 1, ""
428 for values %hdr;
429
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/$_[1]{location}";
497 }
498
499 if ($_[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], $_[1]);
511 }
512 };
513
514 if ($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;
553 } else {
554 %state = ();
555 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
347 } 556 }
348
349 if ($_[1]{Status} =~ /^x30[12]$/ && $recurse) {
350 # microsoft and other assholes don't give a shit for following standards,
351 # try to support a common form of broken Location header.
352 $_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
353
354 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
355 } else {
356 $cb->($_[0], $_[1]);
357 }
358 }; 557 });
359
360 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
361 $finish->(undef, \%hdr);
362 } else { 558 } else {
363 if (exists $hdr{"content-length"}) { 559 &$handle_actual_request;
364 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
365 # could cache persistent connection now
366 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
367 # but we don't, due to misdesigns, this is annoyingly complex
368 };
369
370 $finish->($_[1], \%hdr);
371 });
372 } else {
373 # too bad, need to read until we get an error or EOF,
374 # no way to detect winged data.
375 $_[0]->on_error (sub {
376 $finish->($_[0]{rbuf}, \%hdr);
377 });
378 $_[0]->on_eof (undef);
379 $_[0]->on_read (sub { });
380 }
381 }
382 }); 560 }
561
562 }, sub {
563 $timeout
383 }); 564 };
384 }, sub {
385 $timeout
386 }; 565 };
387 566
388 defined wantarray && AnyEvent::Util::guard { %state = () } 567 defined wantarray && AnyEvent::Util::guard { %state = () }
389} 568}
390 569
391sub http_get($$;@) { 570sub http_get($@) {
392 unshift @_, "GET"; 571 unshift @_, "GET";
393 &http_request 572 &http_request
394} 573}
395 574
396sub http_head($$;@) { 575sub http_head($@) {
397 unshift @_, "HEAD"; 576 unshift @_, "HEAD";
398 &http_request 577 &http_request
399} 578}
400 579
401sub http_post($$$;@) { 580sub http_post($$@) {
581 my $url = shift;
402 unshift @_, "POST", "body"; 582 unshift @_, "POST", $url, "body";
403 &http_request 583 &http_request
404} 584}
405 585
406=back 586=back
407 587
… …
432=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT 612=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
433 613
434The maximum time to cache a persistent connection, in seconds (default: 2). 614The maximum time to cache a persistent connection, in seconds (default: 2).
435 615
436Not 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.
437 623
438=back 624=back
439 625
440=cut 626=cut
441 627
… …
450 636
451L<AnyEvent>. 637L<AnyEvent>.
452 638
453=head1 AUTHOR 639=head1 AUTHOR
454 640
455 Marc Lehmann <schmorp@schmorp.de> 641 Marc Lehmann <schmorp@schmorp.de>
456 http://home.schmorp.de/ 642 http://home.schmorp.de/
643
644With many thanks to Дмитрий Шалашов, who provided countless
645testcases and bugreports.
457 646
458=cut 647=cut
459 648
4601 6491
461 650

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