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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.29 by root, Wed Oct 22 23:28:11 2008 UTC vs.
Revision 1.43 by root, Mon Jul 6 03:03:12 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 4.452 ();
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 = '1.12';
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) {
374 if ($chost =~ /^\./) {
295 next unless $chost eq substr $uhost, -length $chost; 375 next unless $chost eq substr $uhost, -length $chost;
296 next unless $chost =~ /^\./; 376 } elsif ($chost =~ /\./) {
377 next unless $chost eq $uhost;
378 } else {
379 next;
380 }
297 381
298 while (my ($cpath, $v) = each %$v) { 382 while (my ($cpath, $v) = each %$v) {
299 next unless $cpath eq substr $upath, 0, length $cpath; 383 next unless $cpath eq substr $upath, 0, length $cpath;
300 384
301 while (my ($k, $v) = each %$v) { 385 while (my ($k, $v) = each %$v) {
302 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;
303 push @cookie, "$k=$v->{value}"; 389 push @cookie, "$k=\"$value\"";
304 } 390 }
305 } 391 }
306 } 392 }
307 393
308 $hdr{cookie} = join "; ", @cookie 394 $hdr{cookie} = join "; ", @cookie
309 if @cookie; 395 if @cookie;
310 } 396 }
311 397
312 my ($rhost, $rport, $rpath); # request host, port, path 398 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
313 399
314 if ($proxy) { 400 if ($proxy) {
315 ($rhost, $rport, $scheme) = @$proxy; 401 ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
316 $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" && $rscheme eq "https";
317 } else { 406 } else {
318 ($rhost, $rport, $rpath) = ($uhost, $uport, $upath); 407 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
319 $hdr{host} = $uhost;
320 } 408 }
409
410 $hdr{"user-agent"} ||= $USERAGENT;
411 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
321 412
322 $hdr{"content-length"} = length $arg{body}; 413 $hdr{"content-length"} = length $arg{body};
323 414
324 my %state = (connect_guard => 1); 415 my %state = (connect_guard => 1);
325 416
… …
328 419
329 return unless $state{connect_guard}; 420 return unless $state{connect_guard};
330 421
331 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 422 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
332 $state{fh} = shift 423 $state{fh} = shift
333 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url }); 424 or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url }));
425 pop; # free memory, save a tree
334 426
335 delete $state{connect_guard}; # reduce memory usage, save a tree 427 return unless delete $state{connect_guard};
336 428
337 # get handle 429 # get handle
338 $state{handle} = new AnyEvent::Handle 430 $state{handle} = new AnyEvent::Handle
339 fh => $state{fh}, 431 fh => $state{fh},
340 ($scheme eq "https" ? (tls => "connect") : ()); 432 timeout => $timeout,
433 peername => $rhost,
434 tls_ctx => $arg{tls_ctx};
341 435
342 # limit the number of persistent connections 436 # limit the number of persistent connections
437 # keepalive not yet supported
343 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 438 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
344 ++$KA_COUNT{$_[1]}; 439 ++$KA_COUNT{$_[1]};
345 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 440 $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
441 --$KA_COUNT{$_[1]}
442 };
346 $hdr{connection} = "keep-alive"; 443 $hdr{connection} = "keep-alive";
347 delete $hdr{connection}; # keep-alive not yet supported
348 } else { 444 } else {
349 delete $hdr{connection}; 445 delete $hdr{connection};
350 } 446 }
351 447
352 # (re-)configure handle 448 # (re-)configure handle
353 $state{handle}->timeout ($timeout);
354 $state{handle}->on_error (sub { 449 $state{handle}->on_error (sub {
355 my $errno = "$!";
356 %state = (); 450 %state = ();
357 $cb->(undef, { Status => 599, Reason => $errno, URL => $url }); 451 $cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
358 }); 452 });
359 $state{handle}->on_eof (sub { 453 $state{handle}->on_eof (sub {
360 %state = (); 454 %state = ();
361 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url }); 455 $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
362 }); 456 });
363 457
458 $state{handle}->starttls ("connect") if $rscheme eq "https";
459
460 # handle actual, non-tunneled, request
461 my $handle_actual_request = sub {
462 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
463
364 # send request 464 # send request
365 $state{handle}->push_write ( 465 $state{handle}->push_write (
366 "$method $rpath HTTP/1.0\015\012" 466 "$method $rpath HTTP/1.0\015\012"
367 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) 467 . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
368 . "\015\012" 468 . "\015\012"
369 . (delete $arg{body}) 469 . (delete $arg{body})
370 );
371
372 %hdr = (); # reduce memory usage, save a kitten
373
374 # status line
375 $state{handle}->push_read (line => qr/\015?\012/, sub {
376 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
377 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
378
379 my %hdr = ( # response headers
380 HTTPVersion => "\x00$1",
381 Status => "\x00$2",
382 Reason => "\x00$3",
383 URL => "\x00$url"
384 ); 470 );
385 471
472 %hdr = (); # reduce memory usage, save a kitten
473
474 # status line
475 $state{handle}->push_read (line => $qr_nl, sub {
476 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
477 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
478
479 my %hdr = ( # response headers
480 HTTPVersion => ",$1",
481 Status => ",$2",
482 Reason => ",$3",
483 URL => ",$url"
484 );
485
386 # headers, could be optimized a bit 486 # headers, could be optimized a bit
387 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 487 $state{handle}->unshift_read (line => $qr_nlnl, sub {
388 for ("$_[1]\012") { 488 for ("$_[1]\012") {
389 # we support spaces in field names, as lotus domino 489 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
390 # creates them. 490
491 # things seen, not parsed:
492 # p3pP="NON CUR OTPi OUR NOR UNI"
493
391 $hdr{lc $1} .= "\x00$2" 494 $hdr{lc $1} .= ",$2"
392 while /\G 495 while /\G
393 ([^:\000-\037]+): 496 ([^:\000-\037]*):
394 [\011\040]* 497 [\011\040]*
395 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 498 ((?: [^\012]+ | \012[\011\040] )*)
396 \015?\012 499 \012
397 /gxc; 500 /gxc;
398 501
399 /\G$/ 502 /\G$/
400 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url })); 503 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url }));
401 }
402
403 substr $_, 0, 1, ""
404 for values %hdr;
405
406 my $finish = sub {
407 %state = ();
408
409 # set-cookie processing
410 if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
411 for (split /\x00/, $hdr{"set-cookie"}) {
412 my ($cookie, @arg) = split /;\s*/;
413 my ($name, $value) = split /=/, $cookie, 2;
414 my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
415
416 my $cdom = (delete $kv{domain}) || $uhost;
417 my $cpath = (delete $kv{path}) || "/";
418
419 $cdom =~ s/^\.?/./; # make sure it starts with a "."
420
421 next if $cdom =~ /\.$/;
422
423 # this is not rfc-like and not netscape-like. go figure.
424 my $ndots = $cdom =~ y/.//;
425 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
426
427 # store it
428 $arg{cookie_jar}{version} = 1;
429 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
430 }
431 } 504 }
432 505
506 substr $_, 0, 1, ""
507 for values %hdr;
508
509 # redirect handling
433 # microsoft and other shitheads don't give a shit for following standards, 510 # microsoft and other shitheads don't give a shit for following standards,
434 # try to support some common forms of broken Location headers. 511 # try to support some common forms of broken Location headers.
435 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { 512 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
436 $_[1]{location} =~ s/^\.\/+//; 513 $hdr{location} =~ s/^\.\/+//;
437 514
438 my $url = "$scheme://$uhost:$uport"; 515 my $url = "$rscheme://$uhost:$uport";
439 516
440 unless ($_[1]{location} =~ s/^\///) { 517 unless ($hdr{location} =~ s/^\///) {
441 $url .= $upath; 518 $url .= $upath;
442 $url =~ s/\/[^\/]*$//; 519 $url =~ s/\/[^\/]*$//;
443 } 520 }
444 521
445 $_[1]{location} = "$url/$_[1]{location}"; 522 $hdr{location} = "$url/$hdr{location}";
446 } 523 }
447 524
525 my $redirect;
526
527 if ($recurse) {
448 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") { 528 if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
449 # apparently, mozilla et al. just change POST to GET here 529 # apparently, mozilla et al. just change POST to GET here
450 # more research is needed before we do the same 530 # more research is needed before we do the same
451 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 531 $redirect = 1;
452 } elsif ($_[1]{Status} == 303 && $recurse) { 532 } elsif ($hdr{Status} == 303) {
453 # even http/1.1 is unlear on how to mutate the method 533 # even http/1.1 is unclear on how to mutate the method
454 $method = "GET" unless $method eq "HEAD"; 534 $method = "GET" unless $method eq "HEAD";
535 $redirect = 1;
536 } elsif ($hdr{Status} == 307 && $method =~ /^(?:GET|HEAD)$/) {
537 $redirect = 1;
538 }
539 }
540
541 my $finish = sub {
542 $state{handle}->destroy if $state{handle};
543 %state = ();
544
545 # set-cookie processing
546 if ($arg{cookie_jar}) {
547 for ($_[1]{"set-cookie"}) {
548 # parse NAME=VALUE
549 my @kv;
550
551 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
552 my $name = $1;
553 my $value = $3;
554
555 unless ($value) {
556 $value = $2;
557 $value =~ s/\\(.)/$1/gs;
558 }
559
560 push @kv, $name => $value;
561
562 last unless /\G\s*;/gc;
563 }
564
565 last unless @kv;
566
567 my $name = shift @kv;
568 my %kv = (value => shift @kv, @kv);
569
570 my $cdom;
571 my $cpath = (delete $kv{path}) || "/";
572
573 if (exists $kv{domain}) {
574 $cdom = delete $kv{domain};
575
576 $cdom =~ s/^\.?/./; # make sure it starts with a "."
577
578 next if $cdom =~ /\.$/;
579
580 # this is not rfc-like and not netscape-like. go figure.
581 my $ndots = $cdom =~ y/.//;
582 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
583 } else {
584 $cdom = $uhost;
585 }
586
587 # store it
588 $arg{cookie_jar}{version} = 1;
589 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
590
591 redo if /\G\s*,/gc;
592 }
593 }
594
595 if ($redirect) {
596 # we ignore any errors, as it is very common to receive
597 # Content-Length != 0 but no actual body
598 # we also access %hdr, as $_[1] might be an erro
455 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 599 http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
456 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) { 600 } else {
457 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 601 $cb->($_[0], $_[1]);
602 }
603 };
604
605 my $len = $hdr{"content-length"};
606
607 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
608 $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
609 } elsif (
610 $hdr{Status} =~ /^(?:1..|[23]04)$/
611 or $method eq "HEAD"
612 or (defined $len && !$len)
613 ) {
614 # no body
615 $finish->("", \%hdr);
458 } else { 616 } else {
459 $cb->($_[0], $_[1]); 617 # body handling, four different code paths
618 # for want_body_handle, on_body (2x), normal (2x)
619 # we might read too much here, but it does not matter yet (no pers. connections)
620 if (!$redirect && $arg{want_body_handle}) {
621 $_[0]->on_eof (undef);
622 $_[0]->on_error (undef);
623 $_[0]->on_read (undef);
624
625 $finish->(delete $state{handle}, \%hdr);
626
627 } elsif ($arg{on_body}) {
628 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
629 if ($len) {
630 $_[0]->on_eof (undef);
631 $_[0]->on_read (sub {
632 $len -= length $_[0]{rbuf};
633
634 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
635 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
636
637 $len > 0
638 or $finish->("", \%hdr);
639 });
640 } else {
641 $_[0]->on_eof (sub {
642 $finish->("", \%hdr);
643 });
644 $_[0]->on_read (sub {
645 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
646 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
647 });
648 }
649 } else {
650 $_[0]->on_eof (undef);
651
652 if ($len) {
653 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
654 $_[0]->on_read (sub {
655 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
656 if $len <= length $_[0]{rbuf};
657 });
658 } else {
659 $_[0]->on_error (sub {
660 $! == Errno::EPIPE || !$!
661 ? $finish->(delete $_[0]{rbuf}, \%hdr)
662 : $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
663 });
664 $_[0]->on_read (sub { });
665 }
666 }
460 } 667 }
461 }; 668 });
669 });
670 };
462 671
463 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { 672 # now handle proxy-CONNECT method
464 $finish->(undef, \%hdr); 673 if ($proxy && $uscheme eq "https") {
674 # oh dear, we have to wrap it into a connect request
675
676 # maybe re-use $uauthority with patched port?
677 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
678 $state{handle}->push_read (line => $qr_nlnl, sub {
679 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
680 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url }));
681
682 if ($2 == 200) {
683 $rpath = $upath;
684 &$handle_actual_request;
465 } else { 685 } else {
466 if (exists $hdr{"content-length"}) { 686 %state = ();
467 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { 687 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
468 # could cache persistent connection now
469 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
470 # but we don't, due to misdesigns, this is annoyingly complex
471 };
472
473 $finish->($_[1], \%hdr);
474 });
475 } else {
476 # too bad, need to read until we get an error or EOF,
477 # no way to detect winged data.
478 $_[0]->on_error (sub {
479 $finish->($_[0]{rbuf}, \%hdr);
480 });
481 $_[0]->on_eof (undef);
482 $_[0]->on_read (sub { });
483 }
484 } 688 }
485 }); 689 });
690 } else {
691 &$handle_actual_request;
486 }); 692 }
693
487 }, sub { 694 }, sub {
488 $timeout 695 $timeout
489 }; 696 };
490 }; 697 };
491 698
… …
524The default value for the C<recurse> request parameter (default: C<10>). 731The default value for the C<recurse> request parameter (default: C<10>).
525 732
526=item $AnyEvent::HTTP::USERAGENT 733=item $AnyEvent::HTTP::USERAGENT
527 734
528The default value for the C<User-Agent> header (the default is 735The default value for the C<User-Agent> header (the default is
529C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). 736C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
530 737
531=item $AnyEvent::HTTP::MAX_PERSISTENT 738=item $AnyEvent::HTTP::MAX_PER_HOST
532 739
533The maximum number of persistent connections to keep open (default: 8). 740The maximum number of concurrent conenctions to the same host (identified
741by the hostname). If the limit is exceeded, then the additional requests
742are queued until previous connections are closed.
534 743
535Not implemented currently. 744The default value for this is C<4>, and it is highly advisable to not
536 745increase it.
537=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
538
539The maximum time to cache a persistent connection, in seconds (default: 2).
540
541Not implemented currently.
542 746
543=item $AnyEvent::HTTP::ACTIVE 747=item $AnyEvent::HTTP::ACTIVE
544 748
545The number of active connections. This is not the number of currently 749The number of active connections. This is not the number of currently
546running requests, but the number of currently open and non-idle TCP 750running requests, but the number of currently open and non-idle TCP
… …
564=head1 AUTHOR 768=head1 AUTHOR
565 769
566 Marc Lehmann <schmorp@schmorp.de> 770 Marc Lehmann <schmorp@schmorp.de>
567 http://home.schmorp.de/ 771 http://home.schmorp.de/
568 772
773With many thanks to Дмитрий Шалашов, who provided countless
774testcases and bugreports.
775
569=cut 776=cut
570 777
5711 7781
572 779

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