ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/AnyEvent-HTTP/HTTP.pm
(Generate patch)

Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.45 by root, Fri Jul 17 16:56:36 2009 UTC vs.
Revision 1.57 by root, Mon Sep 6 06:31:32 2010 UTC

… …
41use strict; 41use strict;
42no warnings; 42no warnings;
43 43
44use Errno (); 44use Errno ();
45 45
46use AnyEvent 4.8 (); 46use AnyEvent 5.0 ();
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 = '1.4'; 53our $VERSION = '1.46';
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 $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$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 $MAX_RECURSE = 10;
… …
99The callback will be called with the response body data as first argument 99The callback will be called with the response body data as first argument
100(or C<undef> if an error occured), and a hash-ref with response headers as 100(or C<undef> if an error occured), and a hash-ref with response headers as
101second argument. 101second argument.
102 102
103All the headers in that hash are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason> 104headers, the "pseudo-headers" (uppercase to avoid clashing with possible
105response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
105contain the three parts of the HTTP Status-Line of the same name. The 106three parts of the HTTP Status-Line of the same name.
107
106pseudo-header C<URL> contains the original URL (which can differ from the 108The pseudo-header C<URL> contains the actual URL (which can differ from
107requested URL when following redirects). 109the requested URL when following redirects - for example, you might get
110an error that your URL scheme is not supported even though your URL is a
111valid http URL because it redirected to an ftp URL, in which case you can
112look at the URL pseudo header).
113
114The pseudo-header C<Redirect> only exists when the request was a result
115of an internal redirect. In that case it is an array reference with
116the C<($data, $headers)> from the redirect response. Note that this
117response could in turn be the result of a redirect itself, and C<<
118$headers->{Redirect}[1]{Redirect} >> will then contain the original
119response, and so on.
108 120
109If the server sends a header multiple times, then their contents will be 121If the server sends a header multiple times, then their contents will be
110joined together with a comma (C<,>), as per the HTTP spec. 122joined together with a comma (C<,>), as per the HTTP spec.
111 123
112If an internal error occurs, such as not being able to resolve a hostname, 124If an internal error occurs, such as not being able to resolve a hostname,
… …
138 150
139=item headers => hashref 151=item headers => hashref
140 152
141The request headers to use. Currently, C<http_request> may provide its 153The request headers to use. Currently, C<http_request> may provide its
142own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers 154own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
143and will provide defaults for C<User-Agent:> and C<Referer:>. 155and will provide defaults for C<User-Agent:> and C<Referer:> (this can be
156suppressed by using C<undef> for these headers in which case they won't be
157sent at all).
144 158
145=item timeout => $seconds 159=item timeout => $seconds
146 160
147The time-out to use for various stages - each connect attempt will reset 161The time-out to use for various stages - each connect attempt will reset
148the timeout, as will read or write activity. Default timeout is 5 minutes. 162the timeout, as will read or write activity, i.e. this is not an overall
163timeout.
164
165Default timeout is 5 minutes.
149 166
150=item proxy => [$host, $port[, $scheme]] or undef 167=item proxy => [$host, $port[, $scheme]] or undef
151 168
152Use the given http proxy for all requests. If not specified, then the 169Use the given http proxy for all requests. If not specified, then the
153default proxy (as specified by C<$ENV{http_proxy}>) is used. 170default proxy (as specified by C<$ENV{http_proxy}>) is used.
154 171
155C<$scheme> must be either missing or C<http> for HTTP, or C<https> for 172C<$scheme> must be either missing, C<http> for HTTP or C<https> for
156HTTPS. 173HTTPS.
157 174
158=item body => $string 175=item body => $string
159 176
160The request body, usually empty. Will be-sent as-is (future versions of 177The request body, usually empty. Will be-sent as-is (future versions of
… …
185verification, highest compatibility) and high-security (CA and common-name 202verification, highest compatibility) and high-security (CA and common-name
186verification) TLS context. 203verification) TLS context.
187 204
188The default for this option is C<low>, which could be interpreted as "give 205The default for this option is C<low>, which could be interpreted as "give
189me the page, no matter what". 206me the page, no matter what".
207
208=item on_prepare => $callback->($fh)
209
210In rare cases you need to "tune" the socket before it is used to
211connect (for exmaple, to bind it on a given IP address). This parameter
212overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
213and behaves exactly the same way (e.g. it has to provide a
214timeout). See the description for the C<$prepare_cb> argument of
215C<AnyEvent::Socket::tcp_connect> for details.
190 216
191=item on_header => $callback->($headers) 217=item on_header => $callback->($headers)
192 218
193When specified, this callback will be called with the header hash as soon 219When specified, this callback will be called with the header hash as soon
194as headers have been successfully received from the remote server (not on 220as headers have been successfully received from the remote server (not on
… …
312 push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; 338 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
313 339
314 _slot_schedule $_[0]; 340 _slot_schedule $_[0];
315} 341}
316 342
317our $qr_nl = qr<\015?\012>; 343our $qr_nlnl = qr{(?<![^\012])\015?\012};
318our $qr_nlnl = qr<\015?\012\015?\012>;
319 344
320our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; 345our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
321our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; 346our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
322 347
323sub http_request($$@) { 348sub http_request($$@) {
… …
335 while (my ($k, $v) = each %$hdr) { 360 while (my ($k, $v) = each %$hdr) {
336 $hdr{lc $k} = $v; 361 $hdr{lc $k} = $v;
337 } 362 }
338 } 363 }
339 364
365 # pseudo headers for all subsequent responses
366 my @pseudo = (URL => $url);
367 push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
368
340 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; 369 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
341 370
342 return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url }) 371 return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo })
343 if $recurse < 0; 372 if $recurse < 0;
344 373
345 my $proxy = $arg{proxy} || $PROXY; 374 my $proxy = $arg{proxy} || $PROXY;
346 my $timeout = $arg{timeout} || $TIMEOUT; 375 my $timeout = $arg{timeout} || $TIMEOUT;
347 376
348 my ($uscheme, $uauthority, $upath, $query, $fragment) = 377 my ($uscheme, $uauthority, $upath, $query, $fragment) =
349 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; 378 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:(\?[^#]*))?(?:#(.*))?|;
350 379
351 $uscheme = lc $uscheme; 380 $uscheme = lc $uscheme;
352 381
353 my $uport = $uscheme eq "http" ? 80 382 my $uport = $uscheme eq "http" ? 80
354 : $uscheme eq "https" ? 443 383 : $uscheme eq "https" ? 443
355 : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url }); 384 : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo });
356 385
357 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 386 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
358 or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url }); 387 or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo });
359 388
360 my $uhost = $1; 389 my $uhost = $1;
361 $uport = $2 if defined $2; 390 $uport = $2 if defined $2;
362 391
363 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"; 392 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
393 unless exists $hdr{host};
364 394
365 $uhost =~ s/^\[(.*)\]$/$1/; 395 $uhost =~ s/^\[(.*)\]$/$1/;
366 $upath .= "?$query" if length $query; 396 $upath .= $query if length $query;
367 397
368 $upath =~ s%^/?%/%; 398 $upath =~ s%^/?%/%;
369 399
370 # cookie processing 400 # cookie processing
371 if (my $jar = $arg{cookie_jar}) { 401 if (my $jar = $arg{cookie_jar}) {
… …
401 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path 431 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
402 432
403 if ($proxy) { 433 if ($proxy) {
404 ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy); 434 ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
405 435
436 $rscheme = "http" unless defined $rscheme;
437
406 # don't support https requests over https-proxy transport, 438 # don't support https requests over https-proxy transport,
407 # can't be done with tls as spec'ed, unless you double-encrypt. 439 # can't be done with tls as spec'ed, unless you double-encrypt.
408 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; 440 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
409 } else { 441 } else {
410 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); 442 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
411 } 443 }
412 444
413 $hdr{"user-agent"} ||= $USERAGENT; 445 # leave out fragment and query string, just a heuristic
414 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic 446 $hdr{referer} ||= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
447 $hdr{"user-agent"} ||= $USERAGENT unless exists $hdr{"user-agent"};
415 448
416 $hdr{"content-length"} = length $arg{body}; 449 $hdr{"content-length"} = length $arg{body}
450 if length $arg{body} || $method ne "GET";
417 451
418 my %state = (connect_guard => 1); 452 my %state = (connect_guard => 1);
419 453
420 _get_slot $uhost, sub { 454 _get_slot $uhost, sub {
421 $state{slot_guard} = shift; 455 $state{slot_guard} = shift;
… …
425 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 459 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
426 $state{fh} = shift 460 $state{fh} = shift
427 or do { 461 or do {
428 my $err = "$!"; 462 my $err = "$!";
429 %state = (); 463 %state = ();
430 return $cb->(undef, { Status => 599, Reason => $err, URL => $url }); 464 return $cb->(undef, { Status => 599, Reason => $err, @pseudo });
431 }; 465 };
432 466
433 pop; # free memory, save a tree 467 pop; # free memory, save a tree
434 468
435 return unless delete $state{connect_guard}; 469 return unless delete $state{connect_guard};
436 470
437 # get handle 471 # get handle
438 $state{handle} = new AnyEvent::Handle 472 $state{handle} = new AnyEvent::Handle
439 fh => $state{fh}, 473 fh => $state{fh},
474 peername => $rhost,
475 tls_ctx => $arg{tls_ctx},
476 # these need to be reconfigured on keepalive handles
440 timeout => $timeout, 477 timeout => $timeout,
441 peername => $rhost, 478 on_error => sub {
442 tls_ctx => $arg{tls_ctx}; 479 %state = ();
480 $cb->(undef, { Status => 599, Reason => $_[2], @pseudo });
481 },
482 on_eof => sub {
483 %state = ();
484 $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo });
485 },
486 ;
443 487
444 # limit the number of persistent connections 488 # limit the number of persistent connections
445 # keepalive not yet supported 489 # keepalive not yet supported
446 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 490# if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
447 ++$KA_COUNT{$_[1]}; 491# ++$KA_COUNT{$_[1]};
448 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { 492# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
449 --$KA_COUNT{$_[1]} 493# --$KA_COUNT{$_[1]}
450 }; 494# };
451 $hdr{connection} = "keep-alive"; 495# $hdr{connection} = "keep-alive";
452 } else { 496# } else {
453 delete $hdr{connection}; 497 delete $hdr{connection};
454 } 498# }
455
456 # (re-)configure handle
457 $state{handle}->on_error (sub {
458 %state = ();
459 $cb->(undef, { Status => 599, Reason => $_[2], URL => $url });
460 });
461 $state{handle}->on_eof (sub {
462 %state = ();
463 $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url });
464 });
465 499
466 $state{handle}->starttls ("connect") if $rscheme eq "https"; 500 $state{handle}->starttls ("connect") if $rscheme eq "https";
467 501
468 # handle actual, non-tunneled, request 502 # handle actual, non-tunneled, request
469 my $handle_actual_request = sub { 503 my $handle_actual_request = sub {
470 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; 504 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
471 505
472 # send request 506 # send request
473 $state{handle}->push_write ( 507 $state{handle}->push_write (
474 "$method $rpath HTTP/1.0\015\012" 508 "$method $rpath HTTP/1.0\015\012"
475 . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr) 509 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
476 . "\015\012" 510 . "\015\012"
477 . (delete $arg{body}) 511 . (delete $arg{body})
478 ); 512 );
479 513
514 # return if error occured during push_write()
515 return unless %state;
516
480 %hdr = (); # reduce memory usage, save a kitten 517 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
481 518
482 # status line 519 # status line and headers
483 $state{handle}->push_read (line => $qr_nl, sub { 520 $state{handle}->push_read (line => $qr_nlnl, sub {
484 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
485 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url }));
486
487 my %hdr = ( # response headers
488 HTTPVersion => ",$1",
489 Status => ",$2",
490 Reason => ",$3",
491 URL => ",$url"
492 );
493
494 # headers, could be optimized a bit
495 $state{handle}->unshift_read (line => $qr_nlnl, sub {
496 for ("$_[1]\012") { 521 for ("$_[1]") {
497 y/\015//d; # weed out any \015, as they show up in the weirdest of places. 522 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
498 523
524 /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc
525 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo }));
526
527 push @pseudo,
528 HTTPVersion => $1,
529 Status => $2,
530 Reason => $3,
531 ;
532
499 # things seen, not parsed: 533 # things seen, not parsed:
500 # p3pP="NON CUR OTPi OUR NOR UNI" 534 # p3pP="NON CUR OTPi OUR NOR UNI"
501 535
502 $hdr{lc $1} .= ",$2" 536 $hdr{lc $1} .= ",$2"
503 while /\G 537 while /\G
504 ([^:\000-\037]*): 538 ([^:\000-\037]*):
505 [\011\040]* 539 [\011\040]*
506 ((?: [^\012]+ | \012[\011\040] )*) 540 ((?: [^\012]+ | \012[\011\040] )*)
507 \012 541 \012
508 /gxc; 542 /gxc;
509 543
510 /\G$/ 544 /\G$/
511 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url })); 545 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo }));
546 }
547
548 # remove the "," prefix we added to all headers above
549 substr $_, 0, 1, ""
550 for values %hdr;
551
552 # patch in all pseudo headers
553 %hdr = (%hdr, @pseudo);
554
555 # redirect handling
556 # microsoft and other shitheads don't give a shit for following standards,
557 # try to support some common forms of broken Location headers.
558 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
559 $hdr{location} =~ s/^\.\/+//;
560
561 my $url = "$rscheme://$uhost:$uport";
562
563 unless ($hdr{location} =~ s/^\///) {
564 $url .= $upath;
565 $url =~ s/\/[^\/]*$//;
512 } 566 }
513 567
514 substr $_, 0, 1, ""
515 for values %hdr;
516
517 # redirect handling
518 # microsoft and other shitheads don't give a shit for following standards,
519 # try to support some common forms of broken Location headers.
520 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
521 $hdr{location} =~ s/^\.\/+//;
522
523 my $url = "$rscheme://$uhost:$uport";
524
525 unless ($hdr{location} =~ s/^\///) {
526 $url .= $upath;
527 $url =~ s/\/[^\/]*$//;
528 }
529
530 $hdr{location} = "$url/$hdr{location}"; 568 $hdr{location} = "$url/$hdr{location}";
569 }
570
571 my $redirect;
572
573 if ($recurse) {
574 my $status = $hdr{Status};
575
576 # industry standard is to redirect POST as GET for
577 # 301, 302 and 303, in contrast to http/1.0 and 1.1.
578 # also, the UA should ask the user for 301 and 307 and POST,
579 # industry standard seems to be to simply follow.
580 # we go with the industry standard.
581 if ($status == 301 or $status == 302 or $status == 303) {
582 # HTTP/1.1 is unclear on how to mutate the method
583 $method = "GET" unless $method eq "HEAD";
584 $redirect = 1;
585 } elsif ($status == 307) {
586 $redirect = 1;
531 } 587 }
588 }
532 589
533 my $redirect; 590 my $finish = sub {
591 $state{handle}->destroy if $state{handle};
592 %state = ();
534 593
594 # set-cookie processing
535 if ($recurse) { 595 if ($arg{cookie_jar}) {
536 if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") { 596 for ($_[1]{"set-cookie"}) {
537 # apparently, mozilla et al. just change POST to GET here 597 # parse NAME=VALUE
538 # more research is needed before we do the same 598 my @kv;
599
600 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
539 $redirect = 1; 601 my $name = $1;
540 } elsif ($hdr{Status} == 303) { 602 my $value = $3;
541 # even http/1.1 is unclear on how to mutate the method 603
542 $method = "GET" unless $method eq "HEAD"; 604 unless ($value) {
605 $value = $2;
606 $value =~ s/\\(.)/$1/gs;
607 }
608
609 push @kv, $name => $value;
610
611 last unless /\G\s*;/gc;
612 }
613
614 last unless @kv;
615
616 my $name = shift @kv;
617 my %kv = (value => shift @kv, @kv);
618
619 my $cdom;
620 my $cpath = (delete $kv{path}) || "/";
621
622 if (exists $kv{domain}) {
623 $cdom = delete $kv{domain};
624
625 $cdom =~ s/^\.?/./; # make sure it starts with a "."
626
627 next if $cdom =~ /\.$/;
628
629 # this is not rfc-like and not netscape-like. go figure.
630 my $ndots = $cdom =~ y/.//;
631 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
632 } else {
633 $cdom = $uhost;
634 }
635
543 $redirect = 1; 636 # store it
544 } elsif ($hdr{Status} == 307 && $method =~ /^(?:GET|HEAD)$/) { 637 $arg{cookie_jar}{version} = 1;
545 $redirect = 1; 638 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
639
640 redo if /\G\s*,/gc;
546 } 641 }
547 } 642 }
548 643
549 my $finish = sub { 644 if ($redirect && exists $hdr{location}) {
550 $state{handle}->destroy if $state{handle}; 645 # we ignore any errors, as it is very common to receive
551 %state = (); 646 # Content-Length != 0 but no actual body
552 647 # we also access %hdr, as $_[1] might be an erro
553 # set-cookie processing 648 http_request (
554 if ($arg{cookie_jar}) { 649 $method => $hdr{location},
555 for ($_[1]{"set-cookie"}) {
556 # parse NAME=VALUE
557 my @kv;
558
559 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
560 my $name = $1;
561 my $value = $3;
562
563 unless ($value) {
564 $value = $2;
565 $value =~ s/\\(.)/$1/gs;
566 } 650 %arg,
651 recurse => $recurse - 1,
652 Redirect => \@_,
653 $cb);
654 } else {
655 $cb->($_[0], $_[1]);
656 }
657 };
567 658
568 push @kv, $name => $value; 659 my $len = $hdr{"content-length"};
569 660
570 last unless /\G\s*;/gc; 661 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
662 $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo });
663 } elsif (
664 $hdr{Status} =~ /^(?:1..|[23]04)$/
665 or $method eq "HEAD"
666 or (defined $len && !$len)
667 ) {
668 # no body
669 $finish->("", \%hdr);
670 } else {
671 # body handling, four different code paths
672 # for want_body_handle, on_body (2x), normal (2x)
673 # we might read too much here, but it does not matter yet (no pers. connections)
674 if (!$redirect && $arg{want_body_handle}) {
675 $_[0]->on_eof (undef);
676 $_[0]->on_error (undef);
677 $_[0]->on_read (undef);
678
679 $finish->(delete $state{handle}, \%hdr);
680
681 } elsif ($arg{on_body}) {
682 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
683 if ($len) {
684 $_[0]->on_eof (undef);
685 $_[0]->on_read (sub {
686 $len -= length $_[0]{rbuf};
687
688 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
689 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
690
571 } 691 $len > 0
572 692 or $finish->("", \%hdr);
573 last unless @kv;
574
575 my $name = shift @kv;
576 my %kv = (value => shift @kv, @kv);
577
578 my $cdom;
579 my $cpath = (delete $kv{path}) || "/";
580
581 if (exists $kv{domain}) {
582 $cdom = delete $kv{domain};
583
584 $cdom =~ s/^\.?/./; # make sure it starts with a "."
585
586 next if $cdom =~ /\.$/;
587
588 # this is not rfc-like and not netscape-like. go figure.
589 my $ndots = $cdom =~ y/.//;
590 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
591 } else {
592 $cdom = $uhost;
593 }
594
595 # store it
596 $arg{cookie_jar}{version} = 1;
597 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
598
599 redo if /\G\s*,/gc;
600 } 693 });
694 } else {
695 $_[0]->on_eof (sub {
696 $finish->("", \%hdr);
697 });
698 $_[0]->on_read (sub {
699 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
700 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo });
701 });
601 } 702 }
703 } else {
704 $_[0]->on_eof (undef);
602 705
603 if ($redirect) { 706 if ($len) {
604 # we ignore any errors, as it is very common to receive 707 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) });
605 # Content-Length != 0 but no actual body 708 $_[0]->on_read (sub {
606 # we also access %hdr, as $_[1] might be an erro 709 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
607 http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb); 710 if $len <= length $_[0]{rbuf};
711 });
608 } else { 712 } else {
609 $cb->($_[0], $_[1]);
610 }
611 };
612
613 my $len = $hdr{"content-length"};
614
615 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
616 $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
617 } elsif (
618 $hdr{Status} =~ /^(?:1..|[23]04)$/
619 or $method eq "HEAD"
620 or (defined $len && !$len)
621 ) {
622 # no body
623 $finish->("", \%hdr);
624 } else {
625 # body handling, four different code paths
626 # for want_body_handle, on_body (2x), normal (2x)
627 # we might read too much here, but it does not matter yet (no pers. connections)
628 if (!$redirect && $arg{want_body_handle}) {
629 $_[0]->on_eof (undef);
630 $_[0]->on_error (undef);
631 $_[0]->on_read (undef);
632
633 $finish->(delete $state{handle}, \%hdr);
634
635 } elsif ($arg{on_body}) {
636 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
637 if ($len) {
638 $_[0]->on_eof (undef);
639 $_[0]->on_read (sub {
640 $len -= length $_[0]{rbuf};
641
642 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
643 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
644
645 $len > 0
646 or $finish->("", \%hdr);
647 });
648 } else {
649 $_[0]->on_eof (sub {
650 $finish->("", \%hdr);
651 });
652 $_[0]->on_read (sub {
653 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
654 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
655 });
656 }
657 } else {
658 $_[0]->on_eof (undef);
659
660 if ($len) {
661 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
662 $_[0]->on_read (sub {
663 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
664 if $len <= length $_[0]{rbuf};
665 });
666 } else {
667 $_[0]->on_error (sub { 713 $_[0]->on_error (sub {
668 $! == Errno::EPIPE || !$! 714 ($! == Errno::EPIPE || !$!)
669 ? $finish->(delete $_[0]{rbuf}, \%hdr) 715 ? $finish->(delete $_[0]{rbuf}, \%hdr)
670 : $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }); 716 : $finish->(undef, { Status => 599, Reason => $_[2], @pseudo });
671 }); 717 });
672 $_[0]->on_read (sub { }); 718 $_[0]->on_read (sub { });
673 }
674 } 719 }
675 } 720 }
676 }); 721 }
677 }); 722 });
678 }; 723 };
679 724
680 # now handle proxy-CONNECT method 725 # now handle proxy-CONNECT method
681 if ($proxy && $uscheme eq "https") { 726 if ($proxy && $uscheme eq "https") {
… …
683 728
684 # maybe re-use $uauthority with patched port? 729 # maybe re-use $uauthority with patched port?
685 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); 730 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
686 $state{handle}->push_read (line => $qr_nlnl, sub { 731 $state{handle}->push_read (line => $qr_nlnl, sub {
687 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix 732 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
688 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url })); 733 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo }));
689 734
690 if ($2 == 200) { 735 if ($2 == 200) {
691 $rpath = $upath; 736 $rpath = $upath;
692 &$handle_actual_request; 737 &$handle_actual_request;
693 } else { 738 } else {
694 %state = (); 739 %state = ();
695 $cb->(undef, { Status => $2, Reason => $3, URL => $url }); 740 $cb->(undef, { Status => $2, Reason => $3, @pseudo });
696 } 741 }
697 }); 742 });
698 } else { 743 } else {
699 &$handle_actual_request; 744 &$handle_actual_request;
700 } 745 }
701 746
702 }, sub { 747 }, $arg{on_prepare} || sub { $timeout };
703 $timeout
704 };
705 }; 748 };
706 749
707 defined wantarray && AnyEvent::Util::guard { %state = () } 750 defined wantarray && AnyEvent::Util::guard { %state = () }
708} 751}
709 752
… …
723 &http_request 766 &http_request
724} 767}
725 768
726=back 769=back
727 770
771=head2 DNS CACHING
772
773AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for
774the actual connection, which in turn uses AnyEvent::DNS to resolve
775hostnames. The latter is a simple stub resolver and does no caching
776on its own. If you want DNS caching, you currently have to provide
777your own default resolver (by storing a suitable resolver object in
778C<$AnyEvent::DNS::RESOLVER>).
779
728=head2 GLOBAL FUNCTIONS AND VARIABLES 780=head2 GLOBAL FUNCTIONS AND VARIABLES
729 781
730=over 4 782=over 4
731 783
732=item AnyEvent::HTTP::set_proxy "proxy-url" 784=item AnyEvent::HTTP::set_proxy "proxy-url"
733 785
734Sets the default proxy server to use. The proxy-url must begin with a 786Sets the default proxy server to use. The proxy-url must begin with a
735string of the form C<http://host:port> (optionally C<https:...>). 787string of the form C<http://host:port> (optionally C<https:...>), croaks
788otherwise.
789
790To clear an already-set proxy, use C<undef>.
736 791
737=item $AnyEvent::HTTP::MAX_RECURSE 792=item $AnyEvent::HTTP::MAX_RECURSE
738 793
739The default value for the C<recurse> request parameter (default: C<10>). 794The default value for the C<recurse> request parameter (default: C<10>).
740 795
… …
743The default value for the C<User-Agent> header (the default is 798The default value for the C<User-Agent> header (the default is
744C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). 799C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
745 800
746=item $AnyEvent::HTTP::MAX_PER_HOST 801=item $AnyEvent::HTTP::MAX_PER_HOST
747 802
748The maximum number of concurrent conenctions to the same host (identified 803The maximum number of concurrent connections to the same host (identified
749by the hostname). If the limit is exceeded, then the additional requests 804by the hostname). If the limit is exceeded, then the additional requests
750are queued until previous connections are closed. 805are queued until previous connections are closed.
751 806
752The default value for this is C<4>, and it is highly advisable to not 807The default value for this is C<4>, and it is highly advisable to not
753increase it. 808increase it.
… …
761=back 816=back
762 817
763=cut 818=cut
764 819
765sub set_proxy($) { 820sub set_proxy($) {
821 if (length $_[0]) {
766 $PROXY = [$2, $3 || 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix; 822 $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
823 or Carp::croak "$_[0]: invalid proxy URL";
824 $PROXY = [$2, $3 || 3128, $1]
825 } else {
826 undef $PROXY;
827 }
767} 828}
768 829
769# initialise proxy from environment 830# initialise proxy from environment
831eval {
770set_proxy $ENV{http_proxy}; 832 set_proxy $ENV{http_proxy};
833};
771 834
772=head1 SEE ALSO 835=head1 SEE ALSO
773 836
774L<AnyEvent>. 837L<AnyEvent>.
775 838

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines