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 1.57 by root, Mon Sep 6 06:31:32 2010 UTC vs.
Revision 1.66 by root, Fri Dec 31 06:18:30 2010 UTC

… …
43 43
44use Errno (); 44use Errno ();
45 45
46use AnyEvent 5.0 (); 46use AnyEvent 5.0 ();
47use AnyEvent::Util (); 47use AnyEvent::Util ();
48use AnyEvent::Socket ();
49use AnyEvent::Handle (); 48use AnyEvent::Handle ();
50 49
51use base Exporter::; 50use base Exporter::;
52 51
53our $VERSION = '1.46'; 52our $VERSION = '1.5';
54 53
55our @EXPORT = qw(http_get http_post http_head http_request); 54our @EXPORT = qw(http_get http_post http_head http_request);
56 55
57our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; 56our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58our $MAX_RECURSE = 10; 57our $MAX_RECURSE = 10;
… …
92must be an absolute http or https URL. 91must be an absolute http or https URL.
93 92
94When called in void context, nothing is returned. In other contexts, 93When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the 94C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets 95object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled. 96destroyed before the callback is called, the request will be cancelled.
98 97
99The callback will be called with the response body data as first argument 98The 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 99(or C<undef> if an error occured), and a hash-ref with response headers as
101second argument. 100second argument.
102 101
103All the headers in that hash are lowercased. In addition to the response 102All the headers in that hash are lowercased. In addition to the response
104headers, the "pseudo-headers" (uppercase to avoid clashing with possible 103headers, the "pseudo-headers" (uppercase to avoid clashing with possible
105response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the 104response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the
106three parts of the HTTP Status-Line of the same name. 105three parts of the HTTP Status-Line of the same name. If an error occurs
106during the body phase of a request, then the original C<Status> and
107C<Reason> values from the header are available as C<OrigStatus> and
108C<OrigReason>.
107 109
108The pseudo-header C<URL> contains the actual URL (which can differ from 110The pseudo-header C<URL> contains the actual URL (which can differ from
109the requested URL when following redirects - for example, you might get 111the 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 112an 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 113valid http URL because it redirected to an ftp URL, in which case you can
… …
211connect (for exmaple, to bind it on a given IP address). This parameter 213connect (for exmaple, to bind it on a given IP address). This parameter
212overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> 214overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect>
213and behaves exactly the same way (e.g. it has to provide a 215and behaves exactly the same way (e.g. it has to provide a
214timeout). See the description for the C<$prepare_cb> argument of 216timeout). See the description for the C<$prepare_cb> argument of
215C<AnyEvent::Socket::tcp_connect> for details. 217C<AnyEvent::Socket::tcp_connect> for details.
218
219=item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb)
220
221In even rarer cases you want total control over how AnyEvent::HTTP
222establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect>
223to do this, but you can provide your own C<tcp_connect> function -
224obviously, it has to follow the same calling conventions, except that it
225may always return a connection guard object.
226
227There are probably lots of weird uses for this function, starting from
228tracing the hosts C<http_request> actually tries to connect, to (inexact
229but fast) host => IP address caching or even socks protocol support.
216 230
217=item on_header => $callback->($headers) 231=item on_header => $callback->($headers)
218 232
219When specified, this callback will be called with the header hash as soon 233When specified, this callback will be called with the header hash as soon
220as headers have been successfully received from the remote server (not on 234as headers have been successfully received from the remote server (not on
… …
338 push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; 352 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
339 353
340 _slot_schedule $_[0]; 354 _slot_schedule $_[0];
341} 355}
342 356
357# continue to parse $_ for headers and place them into the arg
358sub parse_hdr() {
359 my %hdr;
360
361 # things seen, not parsed:
362 # p3pP="NON CUR OTPi OUR NOR UNI"
363
364 $hdr{lc $1} .= ",$2"
365 while /\G
366 ([^:\000-\037]*):
367 [\011\040]*
368 ((?: [^\012]+ | \012[\011\040] )*)
369 \012
370 /gxc;
371
372 /\G$/
373 or return;
374
375 # remove the "," prefix we added to all headers above
376 substr $_, 0, 1, ""
377 for values %hdr;
378
379 \%hdr
380}
381
343our $qr_nlnl = qr{(?<![^\012])\015?\012}; 382our $qr_nlnl = qr{(?<![^\012])\015?\012};
344 383
345our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; 384our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
346our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; 385our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
347 386
… …
366 my @pseudo = (URL => $url); 405 my @pseudo = (URL => $url);
367 push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect}; 406 push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect};
368 407
369 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; 408 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
370 409
371 return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo }) 410 return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" })
372 if $recurse < 0; 411 if $recurse < 0;
373 412
374 my $proxy = $arg{proxy} || $PROXY; 413 my $proxy = $arg{proxy} || $PROXY;
375 my $timeout = $arg{timeout} || $TIMEOUT; 414 my $timeout = $arg{timeout} || $TIMEOUT;
376 415
… …
379 418
380 $uscheme = lc $uscheme; 419 $uscheme = lc $uscheme;
381 420
382 my $uport = $uscheme eq "http" ? 80 421 my $uport = $uscheme eq "http" ? 80
383 : $uscheme eq "https" ? 443 422 : $uscheme eq "https" ? 443
384 : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo }); 423 : return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" });
385 424
386 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 425 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
387 or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo }); 426 or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" });
388 427
389 my $uhost = $1; 428 my $uhost = $1;
390 $uport = $2 if defined $2; 429 $uport = $2 if defined $2;
391 430
392 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost" 431 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"
… …
441 } else { 480 } else {
442 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); 481 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
443 } 482 }
444 483
445 # leave out fragment and query string, just a heuristic 484 # leave out fragment and query string, just a heuristic
446 $hdr{referer} ||= "$uscheme://$uauthority$upath" unless exists $hdr{referer}; 485 $hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer};
447 $hdr{"user-agent"} ||= $USERAGENT unless exists $hdr{"user-agent"}; 486 $hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"};
448 487
449 $hdr{"content-length"} = length $arg{body} 488 $hdr{"content-length"} = length $arg{body}
450 if length $arg{body} || $method ne "GET"; 489 if length $arg{body} || $method ne "GET";
451 490
491 $hdr{connection} = "close TE";
492 $hdr{te} = "trailers" unless exists $hdr{te};
493
452 my %state = (connect_guard => 1); 494 my %state = (connect_guard => 1);
453 495
454 _get_slot $uhost, sub { 496 _get_slot $uhost, sub {
455 $state{slot_guard} = shift; 497 $state{slot_guard} = shift;
456 498
457 return unless $state{connect_guard}; 499 return unless $state{connect_guard};
458 500
459 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 501 my $connect_cb = sub {
460 $state{fh} = shift 502 $state{fh} = shift
461 or do { 503 or do {
462 my $err = "$!"; 504 my $err = "$!";
463 %state = (); 505 %state = ();
464 return $cb->(undef, { Status => 599, Reason => $err, @pseudo }); 506 return $cb->(undef, { @pseudo, Status => 599, Reason => $err });
465 }; 507 };
466 508
467 pop; # free memory, save a tree 509 pop; # free memory, save a tree
468 510
469 return unless delete $state{connect_guard}; 511 return unless delete $state{connect_guard};
… …
475 tls_ctx => $arg{tls_ctx}, 517 tls_ctx => $arg{tls_ctx},
476 # these need to be reconfigured on keepalive handles 518 # these need to be reconfigured on keepalive handles
477 timeout => $timeout, 519 timeout => $timeout,
478 on_error => sub { 520 on_error => sub {
479 %state = (); 521 %state = ();
480 $cb->(undef, { Status => 599, Reason => $_[2], @pseudo }); 522 $cb->(undef, { @pseudo, Status => 599, Reason => $_[2] });
481 }, 523 },
482 on_eof => sub { 524 on_eof => sub {
483 %state = (); 525 %state = ();
484 $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo }); 526 $cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" });
485 }, 527 },
486 ; 528 ;
487 529
488 # limit the number of persistent connections 530 # limit the number of persistent connections
489 # keepalive not yet supported 531 # keepalive not yet supported
… …
492# $state{handle}{ka_count_guard} = AnyEvent::Util::guard { 534# $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
493# --$KA_COUNT{$_[1]} 535# --$KA_COUNT{$_[1]}
494# }; 536# };
495# $hdr{connection} = "keep-alive"; 537# $hdr{connection} = "keep-alive";
496# } else { 538# } else {
497 delete $hdr{connection}; 539# delete $hdr{connection};
498# } 540# }
499 541
500 $state{handle}->starttls ("connect") if $rscheme eq "https"; 542 $state{handle}->starttls ("connect") if $rscheme eq "https";
501 543
502 # handle actual, non-tunneled, request 544 # handle actual, non-tunneled, request
503 my $handle_actual_request = sub { 545 my $handle_actual_request = sub {
504 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; 546 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
505 547
506 # send request 548 # send request
507 $state{handle}->push_write ( 549 $state{handle}->push_write (
508 "$method $rpath HTTP/1.0\015\012" 550 "$method $rpath HTTP/1.1\015\012"
509 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) 551 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
510 . "\015\012" 552 . "\015\012"
511 . (delete $arg{body}) 553 . (delete $arg{body})
512 ); 554 );
513 555
… …
516 558
517 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use 559 %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use
518 560
519 # status line and headers 561 # status line and headers
520 $state{handle}->push_read (line => $qr_nlnl, sub { 562 $state{handle}->push_read (line => $qr_nlnl, sub {
563 my $keepalive = pop;
564
521 for ("$_[1]") { 565 for ("$_[1]") {
522 y/\015//d; # weed out any \015, as they show up in the weirdest of places. 566 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
523 567
524 /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc 568 /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc
525 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo })); 569 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" }));
526 570
527 push @pseudo, 571 push @pseudo,
528 HTTPVersion => $1, 572 HTTPVersion => $1,
529 Status => $2, 573 Status => $2,
530 Reason => $3, 574 Reason => $3,
531 ; 575 ;
532 576
533 # things seen, not parsed: 577 my $hdr = parse_hdr
534 # p3pP="NON CUR OTPi OUR NOR UNI"
535
536 $hdr{lc $1} .= ",$2"
537 while /\G
538 ([^:\000-\037]*):
539 [\011\040]*
540 ((?: [^\012]+ | \012[\011\040] )*)
541 \012
542 /gxc;
543
544 /\G$/
545 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo })); 578 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" }));
579
580 %hdr = (%$hdr, @pseudo);
546 } 581 }
547
548 # remove the "," prefix we added to all headers above
549 substr $_, 0, 1, ""
550 for values %hdr;
551
552 # patch in all pseudo headers
553 %hdr = (%hdr, @pseudo);
554 582
555 # redirect handling 583 # redirect handling
556 # microsoft and other shitheads don't give a shit for following standards, 584 # microsoft and other shitheads don't give a shit for following standards,
557 # try to support some common forms of broken Location headers. 585 # try to support some common forms of broken Location headers.
558 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { 586 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
… …
585 } elsif ($status == 307) { 613 } elsif ($status == 307) {
586 $redirect = 1; 614 $redirect = 1;
587 } 615 }
588 } 616 }
589 617
590 my $finish = sub { 618 my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive])
591 $state{handle}->destroy if $state{handle}; 619 $state{handle}->destroy if $state{handle};
592 %state = (); 620 %state = ();
593 621
622 if (defined $_[1]) {
623 $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1];
624 $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2];
625 }
626
594 # set-cookie processing 627 # set-cookie processing
595 if ($arg{cookie_jar}) { 628 if ($arg{cookie_jar}) {
596 for ($_[1]{"set-cookie"}) { 629 for ($hdr{"set-cookie"}) {
597 # parse NAME=VALUE 630 # parse NAME=VALUE
598 my @kv; 631 my @kv;
599 632
600 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) { 633 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
601 my $name = $1; 634 my $name = $1;
… …
647 # we also access %hdr, as $_[1] might be an erro 680 # we also access %hdr, as $_[1] might be an erro
648 http_request ( 681 http_request (
649 $method => $hdr{location}, 682 $method => $hdr{location},
650 %arg, 683 %arg,
651 recurse => $recurse - 1, 684 recurse => $recurse - 1,
652 Redirect => \@_, 685 Redirect => [$_[0], \%hdr],
653 $cb); 686 $cb);
654 } else { 687 } else {
655 $cb->($_[0], $_[1]); 688 $cb->($_[0], \%hdr);
656 } 689 }
657 }; 690 };
658 691
659 my $len = $hdr{"content-length"}; 692 my $len = $hdr{"content-length"};
660 693
661 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { 694 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
662 $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo }); 695 $finish->(undef, 598 => "Request cancelled by on_header");
663 } elsif ( 696 } elsif (
664 $hdr{Status} =~ /^(?:1..|[23]04)$/ 697 $hdr{Status} =~ /^(?:1..|204|205|304)$/
665 or $method eq "HEAD" 698 or $method eq "HEAD"
666 or (defined $len && !$len) 699 or (defined $len && !$len)
667 ) { 700 ) {
668 # no body 701 # no body
669 $finish->("", \%hdr); 702 $finish->("", undef, undef, 1);
670 } else { 703 } else {
671 # body handling, four different code paths 704 # body handling, many different code paths
672 # for want_body_handle, on_body (2x), normal (2x) 705 # - no body expected
673 # we might read too much here, but it does not matter yet (no pers. connections) 706 # - want_body_handle
707 # - te chunked
708 # - 2x length known (with or without on_body)
709 # - 2x length not known (with or without on_body)
674 if (!$redirect && $arg{want_body_handle}) { 710 if (!$redirect && $arg{want_body_handle}) {
675 $_[0]->on_eof (undef); 711 $_[0]->on_eof (undef);
676 $_[0]->on_error (undef); 712 $_[0]->on_error (undef);
677 $_[0]->on_read (undef); 713 $_[0]->on_read (undef);
678 714
679 $finish->(delete $state{handle}, \%hdr); 715 $finish->(delete $state{handle});
716
717 } elsif ($hdr{"transfer-encoding"} =~ /chunked/) {
718 my $body = undef;
719 my $on_body = $arg{on_body} || sub { $body .= shift; 1 };
720
721 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
722
723 my $read_chunk; $read_chunk = sub {
724 warn $_[1];#d#
725 $_[1] =~ /^([0-9a-fA-F]+)/
726 or $finish->(undef, 599 => "Garbled chunked transfer encoding");
727
728 my $len = hex $1;
729
730 if ($len) {
731 $_[0]->push_read (chunk => hex $1, sub {
732 $on_body->($_[1], \%hdr)
733 or return $finish->(undef, 598 => "Request cancelled by on_body");
734
735 $_[0]->push_read (line => sub {
736 length $_[1]
737 and return $finish->(undef, 599 => "Garbled chunked transfer encoding");
738 $_[0]->push_read (line => $read_chunk);
739 });
740 });
741 } else {
742 $_[0]->push_read (line => $qr_nlnl, sub {
743 if (length $_[1]) {
744 for ("$_[1]") {
745 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
746
747 my $hdr = parse_hdr
748 or return $finish->(undef, 599 => "Garbled response trailers");
749
750 %hdr = (%hdr, %$hdr);
751 }
752 }
753
754 $finish->($body, undef, undef, 1);
755 });
756 }
757 };
758
759 $_[0]->push_read (line => $read_chunk);
680 760
681 } elsif ($arg{on_body}) { 761 } elsif ($arg{on_body}) {
682 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) }); 762 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
763
683 if ($len) { 764 if ($len) {
684 $_[0]->on_eof (undef);
685 $_[0]->on_read (sub { 765 $_[0]->on_read (sub {
686 $len -= length $_[0]{rbuf}; 766 $len -= length $_[0]{rbuf};
687 767
688 $arg{on_body}(delete $_[0]{rbuf}, \%hdr) 768 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
689 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo }); 769 or return $finish->(undef, 598 => "Request cancelled by on_body");
690 770
691 $len > 0 771 $len > 0
692 or $finish->("", \%hdr); 772 or $finish->("", undef, undef, 1);
693 }); 773 });
694 } else { 774 } else {
695 $_[0]->on_eof (sub { 775 $_[0]->on_eof (sub {
696 $finish->("", \%hdr); 776 $finish->("");
697 }); 777 });
698 $_[0]->on_read (sub { 778 $_[0]->on_read (sub {
699 $arg{on_body}(delete $_[0]{rbuf}, \%hdr) 779 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
700 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo }); 780 or $finish->(undef, 598 => "Request cancelled by on_body");
701 }); 781 });
702 } 782 }
703 } else { 783 } else {
704 $_[0]->on_eof (undef); 784 $_[0]->on_eof (undef);
705 785
706 if ($len) { 786 if ($len) {
707 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) }); 787 $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) });
708 $_[0]->on_read (sub { 788 $_[0]->on_read (sub {
709 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr) 789 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1)
710 if $len <= length $_[0]{rbuf}; 790 if $len <= length $_[0]{rbuf};
711 }); 791 });
712 } else { 792 } else {
713 $_[0]->on_error (sub { 793 $_[0]->on_error (sub {
714 ($! == Errno::EPIPE || !$!) 794 ($! == Errno::EPIPE || !$!)
715 ? $finish->(delete $_[0]{rbuf}, \%hdr) 795 ? $finish->(delete $_[0]{rbuf})
716 : $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }); 796 : $finish->(undef, 599 => $_[2]);
717 }); 797 });
718 $_[0]->on_read (sub { }); 798 $_[0]->on_read (sub { });
719 } 799 }
720 } 800 }
721 } 801 }
… …
728 808
729 # maybe re-use $uauthority with patched port? 809 # maybe re-use $uauthority with patched port?
730 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); 810 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
731 $state{handle}->push_read (line => $qr_nlnl, sub { 811 $state{handle}->push_read (line => $qr_nlnl, sub {
732 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix 812 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
733 or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo })); 813 or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }));
734 814
735 if ($2 == 200) { 815 if ($2 == 200) {
736 $rpath = $upath; 816 $rpath = $upath;
737 &$handle_actual_request; 817 &$handle_actual_request;
738 } else { 818 } else {
739 %state = (); 819 %state = ();
740 $cb->(undef, { Status => $2, Reason => $3, @pseudo }); 820 $cb->(undef, { @pseudo, Status => $2, Reason => $3 });
741 } 821 }
742 }); 822 });
743 } else { 823 } else {
744 &$handle_actual_request; 824 &$handle_actual_request;
745 } 825 }
826 };
746 827
747 }, $arg{on_prepare} || sub { $timeout }; 828 my $tcp_connect = $arg{tcp_connect}
829 || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect };
830
831 $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout });
832
748 }; 833 };
749 834
750 defined wantarray && AnyEvent::Util::guard { %state = () } 835 defined wantarray && AnyEvent::Util::guard { %state = () }
751} 836}
752 837
… …
787string of the form C<http://host:port> (optionally C<https:...>), croaks 872string of the form C<http://host:port> (optionally C<https:...>), croaks
788otherwise. 873otherwise.
789 874
790To clear an already-set proxy, use C<undef>. 875To clear an already-set proxy, use C<undef>.
791 876
877=item $date = AnyEvent::HTTP::format_date $timestamp
878
879Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP
880Date (RFC 2616).
881
882=item $timestamp = AnyEvent::HTTP::parse_date $date
883
884Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX
885timestamp, or C<undef> if the date cannot be parsed.
886
792=item $AnyEvent::HTTP::MAX_RECURSE 887=item $AnyEvent::HTTP::MAX_RECURSE
793 888
794The default value for the C<recurse> request parameter (default: C<10>). 889The default value for the C<recurse> request parameter (default: C<10>).
795 890
796=item $AnyEvent::HTTP::USERAGENT 891=item $AnyEvent::HTTP::USERAGENT
… …
814connections. This number of can be useful for load-leveling. 909connections. This number of can be useful for load-leveling.
815 910
816=back 911=back
817 912
818=cut 913=cut
914
915our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
916our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat);
917
918sub format_date($) {
919 my ($time) = @_;
920
921 # RFC 822/1123 format
922 my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time;
923
924 sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT",
925 $weekday[$wday], $mday, $month[$mon], $year + 1900,
926 $H, $M, $S;
927}
928
929sub parse_date($) {
930 my ($date) = @_;
931
932 my ($d, $m, $y, $H, $M, $S);
933
934 if ($date =~ /^[A-Z][a-z][a-z], ([0-9][0-9]) ([A-Z][a-z][a-z]) ([0-9][0-9][0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) {
935 # RFC 822/1123, required by RFC 2616
936 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6);
937
938 } elsif ($date =~ /^[A-Z][a-z]+, ([0-9][0-9])-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) {
939 # RFC 850
940 ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6);
941
942 } elsif ($date =~ /^[A-Z][a-z][a-z] ([A-Z][a-z][a-z]) ([0-9 ][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) ([0-9][0-9][0-9][0-9])$/) {
943 # ISO C's asctime
944 ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5);
945 }
946 # other formats fail in the loop below
947
948 for (0..11) {
949 if ($m eq $month[$_]) {
950 require Time::Local;
951 return Time::Local::timegm ($S, $M, $H, $d, $_, $y);
952 }
953 }
954
955 undef
956}
819 957
820sub set_proxy($) { 958sub set_proxy($) {
821 if (length $_[0]) { 959 if (length $_[0]) {
822 $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix 960 $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix
823 or Carp::croak "$_[0]: invalid proxy URL"; 961 or Carp::croak "$_[0]: invalid proxy URL";
… …
830# initialise proxy from environment 968# initialise proxy from environment
831eval { 969eval {
832 set_proxy $ENV{http_proxy}; 970 set_proxy $ENV{http_proxy};
833}; 971};
834 972
973=head2 SOCKS PROXIES
974
975Socks proxies are not directly supported by AnyEvent::HTTP. You can
976compile your perl to support socks, or use an external program such as
977F<socksify> (dante) or F<tsocks> to make your program use a socks proxy
978transparently.
979
980Alternatively, for AnyEvent::HTTP only, you can use your own
981C<tcp_connect> function that does the proxy handshake - here is an example
982that works with socks4a proxies:
983
984 use Errno;
985 use AnyEvent::Util;
986 use AnyEvent::Socket;
987 use AnyEvent::Handle;
988
989 # host, port and username of/for your socks4a proxy
990 my $socks_host = "10.0.0.23";
991 my $socks_port = 9050;
992 my $socks_user = "";
993
994 sub socks4a_connect {
995 my ($host, $port, $connect_cb, $prepare_cb) = @_;
996
997 my $hdl = new AnyEvent::Handle
998 connect => [$socks_host, $socks_port],
999 on_prepare => sub { $prepare_cb->($_[0]{fh}) },
1000 on_error => sub { $connect_cb->() },
1001 ;
1002
1003 $hdl->push_write (pack "CCnNZ*Z*", 4, 1, $port, 1, $socks_user, $host);
1004
1005 $hdl->push_read (chunk => 8, sub {
1006 my ($hdl, $chunk) = @_;
1007 my ($status, $port, $ipn) = unpack "xCna4", $chunk;
1008
1009 if ($status == 0x5a) {
1010 $connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port");
1011 } else {
1012 $! = Errno::ENXIO; $connect_cb->();
1013 }
1014 });
1015
1016 $hdl
1017 }
1018
1019Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s,
1020possibly after switching off other proxy types:
1021
1022 AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies
1023
1024 http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub {
1025 my ($data, $headers) = @_;
1026 ...
1027 };
1028
835=head1 SEE ALSO 1029=head1 SEE ALSO
836 1030
837L<AnyEvent>. 1031L<AnyEvent>.
838 1032
839=head1 AUTHOR 1033=head1 AUTHOR

Diff Legend

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