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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.30 by root, Thu Oct 23 02:46:20 2008 UTC vs.
Revision 1.44 by root, Tue Jul 7 00:15:32 2009 UTC

… …
39package AnyEvent::HTTP; 39package AnyEvent::HTTP;
40 40
41use strict; 41use strict;
42no warnings; 42no warnings;
43 43
44use Carp; 44use Errno ();
45 45
46use AnyEvent (); 46use AnyEvent 4.8 ();
47use AnyEvent::Util (); 47use AnyEvent::Util ();
48use AnyEvent::Socket (); 48use AnyEvent::Socket ();
49use AnyEvent::Handle (); 49use AnyEvent::Handle ();
50 50
51use base Exporter::; 51use base Exporter::;
52 52
53our $VERSION = '1.05'; 53our $VERSION = '1.4';
54 54
55our @EXPORT = qw(http_get http_post http_head http_request); 55our @EXPORT = qw(http_get http_post http_head http_request);
56 56
57our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; 57our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58our $MAX_RECURSE = 10; 58our $MAX_RECURSE = 10;
59our $MAX_PERSISTENT = 8; 59our $MAX_PERSISTENT = 8;
60our $PERSISTENT_TIMEOUT = 2; 60our $PERSISTENT_TIMEOUT = 2;
61our $TIMEOUT = 300; 61our $TIMEOUT = 300;
62 62
63# changing these is evil 63# changing these is evil
64our $MAX_PERSISTENT_PER_HOST = 2; 64our $MAX_PERSISTENT_PER_HOST = 0;
65our $MAX_PER_HOST = 4; 65our $MAX_PER_HOST = 4;
66 66
67our $PROXY; 67our $PROXY;
68our $ACTIVE = 0; 68our $ACTIVE = 0;
69 69
… …
94When called in void context, nothing is returned. In other contexts, 94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the 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 96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled. 97destroyed before the callbakc is called, the request will be cancelled.
98 98
99The callback will be called with the response data as first argument 99The 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
101response headers as second argument. 101second argument.
102 102
103All 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
104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason> 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
105contain the three parts of the HTTP Status-Line of the same name. The 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 106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects). 107requested URL when following redirects).
108 108
109If the server sends a header multiple lines, then their contents will be 109If the server sends a header multiple times, then their contents will be
110joined together with C<\x00>. 110joined together with a comma (C<,>), as per the HTTP spec.
111 111
112If 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,
113then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> 113then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<59x>
114and the C<Reason> pseudo-header will contain an error message. 114(usually C<599>) and the C<Reason> pseudo-header will contain an error
115message.
115 116
116A typical callback might look like this: 117A typical callback might look like this:
117 118
118 sub { 119 sub {
119 my ($body, $hdr) = @_; 120 my ($body, $hdr) = @_;
… …
165based on the original netscape specification. 166based on the original netscape specification.
166 167
167The C<$hash_ref> must be an (initially empty) hash reference which will 168The C<$hash_ref> must be an (initially empty) hash reference which will
168get updated automatically. It is possible to save the cookie_jar to 169get updated automatically. It is possible to save the cookie_jar to
169persistent storage with something like JSON or Storable, but this is not 170persistent storage with something like JSON or Storable, but this is not
170recommended, as expire times are currently being ignored. 171recommended, as expiry times are currently being ignored.
171 172
172Note that this cookie implementation is not of very high quality, nor 173Note that this cookie implementation is not of very high quality, nor
173meant to be complete. If you want complete cookie management you have to 174meant 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 175do 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 176cookie-using sites working. Cookies are a privacy disaster, do not use
176them unless required to. 177them unless required to.
178
179=item tls_ctx => $scheme | $tls_ctx
180
181Specifies the AnyEvent::TLS context to be used for https connections. This
182parameter follows the same rules as the C<tls_ctx> parameter to
183L<AnyEvent::Handle>, but additionally, the two strings C<low> or
184C<high> can be specified, which give you a predefined low-security (no
185verification, highest compatibility) and high-security (CA and common-name
186verification) TLS context.
187
188The default for this option is C<low>, which could be interpreted as "give
189me the page, no matter what".
190
191=item on_header => $callback->($headers)
192
193When specified, this callback will be called with the header hash as soon
194as headers have been successfully received from the remote server (not on
195locally-generated errors).
196
197It has to return either true (in which case AnyEvent::HTTP will continue),
198or false, in which case AnyEvent::HTTP will cancel the download (and call
199the finish callback with an error code of C<598>).
200
201This callback is useful, among other things, to quickly reject unwanted
202content, which, if it is supposed to be rare, can be faster than first
203doing a C<HEAD> request.
204
205Example: cancel the request unless the content-type is "text/html".
206
207 on_header => sub {
208 $_[0]{"content-type"} =~ /^text\/html\s*(?:;|$)/
209 },
210
211=item on_body => $callback->($partial_body, $headers)
212
213When specified, all body data will be passed to this callback instead of
214to the completion callback. The completion callback will get the empty
215string instead of the body data.
216
217It has to return either true (in which case AnyEvent::HTTP will continue),
218or false, in which case AnyEvent::HTTP will cancel the download (and call
219the completion callback with an error code of C<598>).
220
221This callback is useful when the data is too large to be held in memory
222(so the callback writes it to a file) or when only some information should
223be extracted, or when the body should be processed incrementally.
224
225It is usually preferred over doing your own body handling via
226C<want_body_handle>.
227
228=item want_body_handle => $enable
229
230When enabled (default is disabled), the behaviour of AnyEvent::HTTP
231changes considerably: after parsing the headers, and instead of
232downloading the body (if any), the completion callback will be
233called. Instead of the C<$body> argument containing the body data, the
234callback will receive the L<AnyEvent::Handle> object associated with the
235connection. In error cases, C<undef> will be passed. When there is no body
236(e.g. status C<304>), the empty string will be passed.
237
238The handle object might or might not be in TLS mode, might be connected to
239a proxy, be a persistent connection etc., and configured in unspecified
240ways. The user is responsible for this handle (it will not be used by this
241module anymore).
242
243This is useful with some push-type services, where, after the initial
244headers, an interactive protocol is used (typical example would be the
245push-style twitter API which starts a JSON/XML stream).
246
247If you think you need this, first have a look at C<on_body>, to see if
248that doesn'T solve your problem in a better way.
177 249
178=back 250=back
179 251
180Example: make a simple HTTP GET request for http://www.nethype.de/ 252Example: make a simple HTTP GET request for http://www.nethype.de/
181 253
… …
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; 309 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238 310
239 _slot_schedule $_[0]; 311 _slot_schedule $_[0];
240} 312}
241 313
314our $qr_nl = qr<\015?\012>;
315our $qr_nlnl = qr<\015?\012\015?\012>;
316
317our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
318our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
319
242sub http_request($$@) { 320sub http_request($$@) {
243 my $cb = pop; 321 my $cb = pop;
244 my ($method, $url, %arg) = @_; 322 my ($method, $url, %arg) = @_;
245 323
246 my %hdr; 324 my %hdr;
325
326 $arg{tls_ctx} = $TLS_CTX_LOW if $arg{tls_ctx} eq "low" || !exists $arg{tls_ctx};
327 $arg{tls_ctx} = $TLS_CTX_HIGH if $arg{tls_ctx} eq "high";
247 328
248 $method = uc $method; 329 $method = uc $method;
249 330
250 if (my $hdr = $arg{headers}) { 331 if (my $hdr = $arg{headers}) {
251 while (my ($k, $v) = each %$hdr) { 332 while (my ($k, $v) = each %$hdr) {
… …
253 } 334 }
254 } 335 }
255 336
256 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; 337 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
257 338
258 return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url }) 339 return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url })
259 if $recurse < 0; 340 if $recurse < 0;
260 341
261 my $proxy = $arg{proxy} || $PROXY; 342 my $proxy = $arg{proxy} || $PROXY;
262 my $timeout = $arg{timeout} || $TIMEOUT; 343 my $timeout = $arg{timeout} || $TIMEOUT;
263 344
264 $hdr{"user-agent"} ||= $USERAGENT;
265
266 my ($scheme, $authority, $upath, $query, $fragment) = 345 my ($uscheme, $uauthority, $upath, $query, $fragment) =
267 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; 346 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
268 347
269 $scheme = lc $scheme; 348 $uscheme = lc $uscheme;
270 349
271 my $uport = $scheme eq "http" ? 80 350 my $uport = $uscheme eq "http" ? 80
272 : $scheme eq "https" ? 443 351 : $uscheme eq "https" ? 443
273 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url }); 352 : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
274 353
275 $hdr{referer} ||= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
276
277 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 354 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
278 or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url }); 355 or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
279 356
280 my $uhost = $1; 357 my $uhost = $1;
281 $uport = $2 if defined $2; 358 $uport = $2 if defined $2;
282 359
360 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
361
283 $uhost =~ s/^\[(.*)\]$/$1/; 362 $uhost =~ s/^\[(.*)\]$/$1/;
284 $upath .= "?$query" if length $query; 363 $upath .= "?$query" if length $query;
285 364
286 $upath =~ s%^/?%/%; 365 $upath =~ s%^/?%/%;
287 366
288 # cookie processing 367 # cookie processing
289 if (my $jar = $arg{cookie_jar}) { 368 if (my $jar = $arg{cookie_jar}) {
290 %$jar = () if $jar->{version} < 1; 369 %$jar = () if $jar->{version} != 1;
291 370
292 my @cookie; 371 my @cookie;
293 372
294 while (my ($chost, $v) = each %$jar) { 373 while (my ($chost, $v) = each %$jar) {
295 if ($chost =~ /^\./) { 374 if ($chost =~ /^\./) {
… …
302 381
303 while (my ($cpath, $v) = each %$v) { 382 while (my ($cpath, $v) = each %$v) {
304 next unless $cpath eq substr $upath, 0, length $cpath; 383 next unless $cpath eq substr $upath, 0, length $cpath;
305 384
306 while (my ($k, $v) = each %$v) { 385 while (my ($k, $v) = each %$v) {
307 next if $scheme ne "https" && exists $v->{secure}; 386 next if $uscheme ne "https" && exists $v->{secure};
387 my $value = $v->{value};
388 $value =~ s/([\\"])/\\$1/g;
308 push @cookie, "$k=$v->{value}"; 389 push @cookie, "$k=\"$value\"";
309 } 390 }
310 } 391 }
311 } 392 }
312 393
313 $hdr{cookie} = join "; ", @cookie 394 $hdr{cookie} = join "; ", @cookie
314 if @cookie; 395 if @cookie;
315 } 396 }
316 397
317 my ($rhost, $rport, $rpath); # request host, port, path 398 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
318 399
319 if ($proxy) { 400 if ($proxy) {
320 ($rhost, $rport, $scheme) = @$proxy; 401 ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
321 $rpath = $url; 402
403 # don't support https requests over https-proxy transport,
404 # can't be done with tls as spec'ed, unless you double-encrypt.
405 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
322 } else { 406 } else {
323 ($rhost, $rport, $rpath) = ($uhost, $uport, $upath); 407 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
324 $hdr{host} = $uhost;
325 } 408 }
409
410 $hdr{"user-agent"} ||= $USERAGENT;
411 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
326 412
327 $hdr{"content-length"} = length $arg{body}; 413 $hdr{"content-length"} = length $arg{body};
328 414
329 my %state = (connect_guard => 1); 415 my %state = (connect_guard => 1);
330 416
… …
333 419
334 return unless $state{connect_guard}; 420 return unless $state{connect_guard};
335 421
336 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 422 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
337 $state{fh} = shift 423 $state{fh} = shift
424 or do {
425 my $err = "$!";
426 %state = ();
338 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url }); 427 return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
428 };
339 429
340 delete $state{connect_guard}; # reduce memory usage, save a tree 430 pop; # free memory, save a tree
431
432 return unless delete $state{connect_guard};
341 433
342 # get handle 434 # get handle
343 $state{handle} = new AnyEvent::Handle 435 $state{handle} = new AnyEvent::Handle
344 fh => $state{fh}, 436 fh => $state{fh},
345 ($scheme eq "https" ? (tls => "connect") : ()); 437 timeout => $timeout,
438 peername => $rhost,
439 tls_ctx => $arg{tls_ctx};
346 440
347 # limit the number of persistent connections 441 # limit the number of persistent connections
442 # keepalive not yet supported
348 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 443 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
349 ++$KA_COUNT{$_[1]}; 444 ++$KA_COUNT{$_[1]};
350 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 445 $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
446 --$KA_COUNT{$_[1]}
447 };
351 $hdr{connection} = "keep-alive"; 448 $hdr{connection} = "keep-alive";
352 delete $hdr{connection}; # keep-alive not yet supported
353 } else { 449 } else {
354 delete $hdr{connection}; 450 delete $hdr{connection};
355 } 451 }
356 452
357 # (re-)configure handle 453 # (re-)configure handle
358 $state{handle}->timeout ($timeout);
359 $state{handle}->on_error (sub { 454 $state{handle}->on_error (sub {
360 my $errno = "$!";
361 %state = (); 455 %state = ();
362 $cb->(undef, { Status => 599, Reason => $errno, URL => $url }); 456 $cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
363 }); 457 });
364 $state{handle}->on_eof (sub { 458 $state{handle}->on_eof (sub {
365 %state = (); 459 %state = ();
366 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url }); 460 $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
367 }); 461 });
368 462
463 $state{handle}->starttls ("connect") if $rscheme eq "https";
464
465 # handle actual, non-tunneled, request
466 my $handle_actual_request = sub {
467 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
468
369 # send request 469 # send request
370 $state{handle}->push_write ( 470 $state{handle}->push_write (
371 "$method $rpath HTTP/1.0\015\012" 471 "$method $rpath HTTP/1.0\015\012"
372 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) 472 . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
373 . "\015\012" 473 . "\015\012"
374 . (delete $arg{body}) 474 . (delete $arg{body})
375 );
376
377 %hdr = (); # reduce memory usage, save a kitten
378
379 # status line
380 $state{handle}->push_read (line => qr/\015?\012/, sub {
381 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
382 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
383
384 my %hdr = ( # response headers
385 HTTPVersion => "\x00$1",
386 Status => "\x00$2",
387 Reason => "\x00$3",
388 URL => "\x00$url"
389 ); 475 );
390 476
477 %hdr = (); # reduce memory usage, save a kitten
478
479 # status line
480 $state{handle}->push_read (line => $qr_nl, sub {
481 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
482 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
483
484 my %hdr = ( # response headers
485 HTTPVersion => ",$1",
486 Status => ",$2",
487 Reason => ",$3",
488 URL => ",$url"
489 );
490
391 # headers, could be optimized a bit 491 # headers, could be optimized a bit
392 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 492 $state{handle}->unshift_read (line => $qr_nlnl, sub {
393 for ("$_[1]\012") { 493 for ("$_[1]\012") {
394 # we support spaces in field names, as lotus domino 494 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
395 # creates them (actually spaces around seperators 495
396 # are strictly allowed in http, they are a security issue). 496 # things seen, not parsed:
497 # p3pP="NON CUR OTPi OUR NOR UNI"
498
397 $hdr{lc $1} .= "\x00$2" 499 $hdr{lc $1} .= ",$2"
398 while /\G 500 while /\G
399 ([^:\000-\037]+): 501 ([^:\000-\037]*):
400 [\011\040]* 502 [\011\040]*
401 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 503 ((?: [^\012]+ | \012[\011\040] )*)
402 \015?\012 504 \012
403 /gxc; 505 /gxc;
404 506
405 /\G$/ 507 /\G$/
406 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url })); 508 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
407 }
408
409 substr $_, 0, 1, ""
410 for values %hdr;
411
412 my $finish = sub {
413 # TODO: use destroy method, when/if available
414 #$state{handle}->destroy;
415 $state{handle}->on_eof (undef);
416 $state{handle}->on_error (undef);
417 %state = ();
418
419 # set-cookie processing
420 if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
421 for (split /\x00/, $hdr{"set-cookie"}) {
422 my ($cookie, @arg) = split /;\s*/;
423 my ($name, $value) = split /=/, $cookie, 2;
424 my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
425
426 my $cdom;
427 my $cpath = (delete $kv{path}) || "/";
428
429 if (exists $kv{domain}) {
430 $cdom = delete $kv{domain};
431
432 $cdom =~ s/^\.?/./; # make sure it starts with a "."
433
434 next if $cdom =~ /\.$/;
435
436 # this is not rfc-like and not netscape-like. go figure.
437 my $ndots = $cdom =~ y/.//;
438 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
439 } else {
440 $cdom = $uhost;
441 }
442
443 # store it
444 $arg{cookie_jar}{version} = 1;
445 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
446 }
447 } 509 }
448 510
511 substr $_, 0, 1, ""
512 for values %hdr;
513
514 # redirect handling
449 # microsoft and other shitheads don't give a shit for following standards, 515 # microsoft and other shitheads don't give a shit for following standards,
450 # try to support some common forms of broken Location headers. 516 # try to support some common forms of broken Location headers.
451 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { 517 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
452 $_[1]{location} =~ s/^\.\/+//; 518 $hdr{location} =~ s/^\.\/+//;
453 519
454 my $url = "$scheme://$uhost:$uport"; 520 my $url = "$rscheme://$uhost:$uport";
455 521
456 unless ($_[1]{location} =~ s/^\///) { 522 unless ($hdr{location} =~ s/^\///) {
457 $url .= $upath; 523 $url .= $upath;
458 $url =~ s/\/[^\/]*$//; 524 $url =~ s/\/[^\/]*$//;
459 } 525 }
460 526
461 $_[1]{location} = "$url/$_[1]{location}"; 527 $hdr{location} = "$url/$hdr{location}";
462 } 528 }
463 529
530 my $redirect;
531
532 if ($recurse) {
464 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") { 533 if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
465 # apparently, mozilla et al. just change POST to GET here 534 # apparently, mozilla et al. just change POST to GET here
466 # more research is needed before we do the same 535 # more research is needed before we do the same
467 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 536 $redirect = 1;
468 } elsif ($_[1]{Status} == 303 && $recurse) { 537 } elsif ($hdr{Status} == 303) {
469 # even http/1.1 is unclear on how to mutate the method 538 # even http/1.1 is unclear on how to mutate the method
470 $method = "GET" unless $method eq "HEAD"; 539 $method = "GET" unless $method eq "HEAD";
540 $redirect = 1;
541 } elsif ($hdr{Status} == 307 && $method =~ /^(?:GET|HEAD)$/) {
542 $redirect = 1;
543 }
544 }
545
546 my $finish = sub {
547 $state{handle}->destroy if $state{handle};
548 %state = ();
549
550 # set-cookie processing
551 if ($arg{cookie_jar}) {
552 for ($_[1]{"set-cookie"}) {
553 # parse NAME=VALUE
554 my @kv;
555
556 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
557 my $name = $1;
558 my $value = $3;
559
560 unless ($value) {
561 $value = $2;
562 $value =~ s/\\(.)/$1/gs;
563 }
564
565 push @kv, $name => $value;
566
567 last unless /\G\s*;/gc;
568 }
569
570 last unless @kv;
571
572 my $name = shift @kv;
573 my %kv = (value => shift @kv, @kv);
574
575 my $cdom;
576 my $cpath = (delete $kv{path}) || "/";
577
578 if (exists $kv{domain}) {
579 $cdom = delete $kv{domain};
580
581 $cdom =~ s/^\.?/./; # make sure it starts with a "."
582
583 next if $cdom =~ /\.$/;
584
585 # this is not rfc-like and not netscape-like. go figure.
586 my $ndots = $cdom =~ y/.//;
587 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
588 } else {
589 $cdom = $uhost;
590 }
591
592 # store it
593 $arg{cookie_jar}{version} = 1;
594 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
595
596 redo if /\G\s*,/gc;
597 }
598 }
599
600 if ($redirect) {
601 # we ignore any errors, as it is very common to receive
602 # Content-Length != 0 but no actual body
603 # we also access %hdr, as $_[1] might be an erro
471 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 604 http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
472 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) { 605 } else {
473 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 606 $cb->($_[0], $_[1]);
607 }
608 };
609
610 my $len = $hdr{"content-length"};
611
612 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
613 $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
614 } elsif (
615 $hdr{Status} =~ /^(?:1..|[23]04)$/
616 or $method eq "HEAD"
617 or (defined $len && !$len)
618 ) {
619 # no body
620 $finish->("", \%hdr);
474 } else { 621 } else {
475 $cb->($_[0], $_[1]); 622 # body handling, four different code paths
623 # for want_body_handle, on_body (2x), normal (2x)
624 # we might read too much here, but it does not matter yet (no pers. connections)
625 if (!$redirect && $arg{want_body_handle}) {
626 $_[0]->on_eof (undef);
627 $_[0]->on_error (undef);
628 $_[0]->on_read (undef);
629
630 $finish->(delete $state{handle}, \%hdr);
631
632 } elsif ($arg{on_body}) {
633 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
634 if ($len) {
635 $_[0]->on_eof (undef);
636 $_[0]->on_read (sub {
637 $len -= length $_[0]{rbuf};
638
639 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
640 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
641
642 $len > 0
643 or $finish->("", \%hdr);
644 });
645 } else {
646 $_[0]->on_eof (sub {
647 $finish->("", \%hdr);
648 });
649 $_[0]->on_read (sub {
650 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
651 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
652 });
653 }
654 } else {
655 $_[0]->on_eof (undef);
656
657 if ($len) {
658 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
659 $_[0]->on_read (sub {
660 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
661 if $len <= length $_[0]{rbuf};
662 });
663 } else {
664 $_[0]->on_error (sub {
665 $! == Errno::EPIPE || !$!
666 ? $finish->(delete $_[0]{rbuf}, \%hdr)
667 : $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
668 });
669 $_[0]->on_read (sub { });
670 }
671 }
476 } 672 }
477 }; 673 });
674 });
675 };
478 676
479 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { 677 # now handle proxy-CONNECT method
480 $finish->(undef, \%hdr); 678 if ($proxy && $uscheme eq "https") {
679 # oh dear, we have to wrap it into a connect request
680
681 # maybe re-use $uauthority with patched port?
682 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
683 $state{handle}->push_read (line => $qr_nlnl, sub {
684 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
685 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
686
687 if ($2 == 200) {
688 $rpath = $upath;
689 &$handle_actual_request;
481 } else { 690 } else {
482 if (exists $hdr{"content-length"}) { 691 %state = ();
483 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { 692 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
484 # could cache persistent connection now
485 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
486 # but we don't, due to misdesigns, this is annoyingly complex
487 };
488
489 $finish->($_[1], \%hdr);
490 });
491 } else {
492 # too bad, need to read until we get an error or EOF,
493 # no way to detect winged data.
494 $_[0]->on_error (sub {
495 $finish->($_[0]{rbuf}, \%hdr);
496 });
497 $_[0]->on_eof (undef);
498 $_[0]->on_read (sub { });
499 }
500 } 693 }
501 }); 694 });
695 } else {
696 &$handle_actual_request;
502 }); 697 }
698
503 }, sub { 699 }, sub {
504 $timeout 700 $timeout
505 }; 701 };
506 }; 702 };
507 703
… …
540The default value for the C<recurse> request parameter (default: C<10>). 736The default value for the C<recurse> request parameter (default: C<10>).
541 737
542=item $AnyEvent::HTTP::USERAGENT 738=item $AnyEvent::HTTP::USERAGENT
543 739
544The default value for the C<User-Agent> header (the default is 740The default value for the C<User-Agent> header (the default is
545C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). 741C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
546 742
547=item $AnyEvent::HTTP::MAX_PERSISTENT 743=item $AnyEvent::HTTP::MAX_PER_HOST
548 744
549The maximum number of persistent connections to keep open (default: 8). 745The maximum number of concurrent conenctions to the same host (identified
746by the hostname). If the limit is exceeded, then the additional requests
747are queued until previous connections are closed.
550 748
551Not implemented currently. 749The default value for this is C<4>, and it is highly advisable to not
552 750increase it.
553=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
554
555The maximum time to cache a persistent connection, in seconds (default: 2).
556
557Not implemented currently.
558 751
559=item $AnyEvent::HTTP::ACTIVE 752=item $AnyEvent::HTTP::ACTIVE
560 753
561The number of active connections. This is not the number of currently 754The number of active connections. This is not the number of currently
562running requests, but the number of currently open and non-idle TCP 755running requests, but the number of currently open and non-idle TCP
… …
580=head1 AUTHOR 773=head1 AUTHOR
581 774
582 Marc Lehmann <schmorp@schmorp.de> 775 Marc Lehmann <schmorp@schmorp.de>
583 http://home.schmorp.de/ 776 http://home.schmorp.de/
584 777
778With many thanks to Дмитрий Шалашов, who provided countless
779testcases and bugreports.
780
585=cut 781=cut
586 782
5871 7831
588 784

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