… | |
… | |
43 | |
43 | |
44 | use Errno (); |
44 | use Errno (); |
45 | |
45 | |
46 | use AnyEvent 5.0 (); |
46 | use AnyEvent 5.0 (); |
47 | use AnyEvent::Util (); |
47 | use AnyEvent::Util (); |
48 | use AnyEvent::Socket (); |
|
|
49 | use AnyEvent::Handle (); |
48 | use AnyEvent::Handle (); |
50 | |
49 | |
51 | use base Exporter::; |
50 | use base Exporter::; |
52 | |
51 | |
53 | our $VERSION = '1.43'; |
52 | our $VERSION = '1.46'; |
54 | |
53 | |
55 | our @EXPORT = qw(http_get http_post http_head http_request); |
54 | our @EXPORT = qw(http_get http_post http_head http_request); |
56 | |
55 | |
57 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
56 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
58 | our $MAX_RECURSE = 10; |
57 | our $MAX_RECURSE = 10; |
… | |
… | |
92 | must be an absolute http or https URL. |
91 | must be an absolute http or https URL. |
93 | |
92 | |
94 | When called in void context, nothing is returned. In other contexts, |
93 | When called in void context, nothing is returned. In other contexts, |
95 | C<http_request> returns a "cancellation guard" - you have to keep the |
94 | C<http_request> returns a "cancellation guard" - you have to keep the |
96 | object at least alive until the callback get called. If the object gets |
95 | object at least alive until the callback get called. If the object gets |
97 | destroyed before the callbakc is called, the request will be cancelled. |
96 | destroyed before the callback is called, the request will be cancelled. |
98 | |
97 | |
99 | The callback will be called with the response body data as first argument |
98 | The 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 |
101 | second argument. |
100 | second argument. |
102 | |
101 | |
103 | All the headers in that hash are lowercased. In addition to the response |
102 | All the headers in that hash are lowercased. In addition to the response |
104 | headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason> |
103 | headers, the "pseudo-headers" (uppercase to avoid clashing with possible |
|
|
104 | response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the |
105 | contain the three parts of the HTTP Status-Line of the same name. The |
105 | three parts of the HTTP Status-Line of the same name. |
|
|
106 | |
106 | pseudo-header C<URL> contains the original URL (which can differ from the |
107 | The pseudo-header C<URL> contains the actual URL (which can differ from |
107 | requested URL when following redirects). |
108 | the requested URL when following redirects - for example, you might get |
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|
109 | an error that your URL scheme is not supported even though your URL is a |
|
|
110 | valid http URL because it redirected to an ftp URL, in which case you can |
|
|
111 | look at the URL pseudo header). |
|
|
112 | |
|
|
113 | The pseudo-header C<Redirect> only exists when the request was a result |
|
|
114 | of an internal redirect. In that case it is an array reference with |
|
|
115 | the C<($data, $headers)> from the redirect response. Note that this |
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|
116 | response could in turn be the result of a redirect itself, and C<< |
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|
117 | $headers->{Redirect}[1]{Redirect} >> will then contain the original |
|
|
118 | response, and so on. |
108 | |
119 | |
109 | If the server sends a header multiple times, then their contents will be |
120 | If the server sends a header multiple times, then their contents will be |
110 | joined together with a comma (C<,>), as per the HTTP spec. |
121 | joined together with a comma (C<,>), as per the HTTP spec. |
111 | |
122 | |
112 | If an internal error occurs, such as not being able to resolve a hostname, |
123 | If an internal error occurs, such as not being able to resolve a hostname, |
… | |
… | |
199 | connect (for exmaple, to bind it on a given IP address). This parameter |
210 | connect (for exmaple, to bind it on a given IP address). This parameter |
200 | overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> |
211 | overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> |
201 | and behaves exactly the same way (e.g. it has to provide a |
212 | and behaves exactly the same way (e.g. it has to provide a |
202 | timeout). See the description for the C<$prepare_cb> argument of |
213 | timeout). See the description for the C<$prepare_cb> argument of |
203 | C<AnyEvent::Socket::tcp_connect> for details. |
214 | C<AnyEvent::Socket::tcp_connect> for details. |
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|
215 | |
|
|
216 | =item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb) |
|
|
217 | |
|
|
218 | In even rarer cases you want total control over how AnyEvent::HTTP |
|
|
219 | establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect> |
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|
220 | to do this, but you can provide your own C<tcp_connect> function - |
|
|
221 | obviously, it has to follow the same calling conventions, except that it |
|
|
222 | may always return a connection guard object. |
|
|
223 | |
|
|
224 | There are probably lots of weird uses for this function, starting from |
|
|
225 | tracing the hosts C<http_request> actually tries to connect, to (inexact |
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|
226 | but fast) host => IP address caching or even socks protocol support. |
204 | |
227 | |
205 | =item on_header => $callback->($headers) |
228 | =item on_header => $callback->($headers) |
206 | |
229 | |
207 | When specified, this callback will be called with the header hash as soon |
230 | When specified, this callback will be called with the header hash as soon |
208 | as headers have been successfully received from the remote server (not on |
231 | as headers have been successfully received from the remote server (not on |
… | |
… | |
326 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
349 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
327 | |
350 | |
328 | _slot_schedule $_[0]; |
351 | _slot_schedule $_[0]; |
329 | } |
352 | } |
330 | |
353 | |
331 | our $qr_nl = qr{\015?\012}; |
|
|
332 | our $qr_nlnl = qr{(?<![^\012])\015?\012}; |
354 | our $qr_nlnl = qr{(?<![^\012])\015?\012}; |
333 | |
355 | |
334 | our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; |
356 | our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; |
335 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; |
357 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; |
336 | |
358 | |
… | |
… | |
349 | while (my ($k, $v) = each %$hdr) { |
371 | while (my ($k, $v) = each %$hdr) { |
350 | $hdr{lc $k} = $v; |
372 | $hdr{lc $k} = $v; |
351 | } |
373 | } |
352 | } |
374 | } |
353 | |
375 | |
|
|
376 | # pseudo headers for all subsequent responses |
|
|
377 | my @pseudo = (URL => $url); |
|
|
378 | push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect}; |
|
|
379 | |
354 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
380 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
355 | |
381 | |
356 | return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url }) |
382 | return $cb->(undef, { Status => 599, Reason => "Too many redirections", @pseudo }) |
357 | if $recurse < 0; |
383 | if $recurse < 0; |
358 | |
384 | |
359 | my $proxy = $arg{proxy} || $PROXY; |
385 | my $proxy = $arg{proxy} || $PROXY; |
360 | my $timeout = $arg{timeout} || $TIMEOUT; |
386 | my $timeout = $arg{timeout} || $TIMEOUT; |
361 | |
387 | |
362 | my ($uscheme, $uauthority, $upath, $query, $fragment) = |
388 | my ($uscheme, $uauthority, $upath, $query, $fragment) = |
363 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
389 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:(\?[^#]*))?(?:#(.*))?|; |
364 | |
390 | |
365 | $uscheme = lc $uscheme; |
391 | $uscheme = lc $uscheme; |
366 | |
392 | |
367 | my $uport = $uscheme eq "http" ? 80 |
393 | my $uport = $uscheme eq "http" ? 80 |
368 | : $uscheme eq "https" ? 443 |
394 | : $uscheme eq "https" ? 443 |
369 | : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url }); |
395 | : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", @pseudo }); |
370 | |
396 | |
371 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
397 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
372 | or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url }); |
398 | or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", @pseudo }); |
373 | |
399 | |
374 | my $uhost = $1; |
400 | my $uhost = $1; |
375 | $uport = $2 if defined $2; |
401 | $uport = $2 if defined $2; |
376 | |
402 | |
377 | $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"; |
403 | $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost" |
|
|
404 | unless exists $hdr{host}; |
378 | |
405 | |
379 | $uhost =~ s/^\[(.*)\]$/$1/; |
406 | $uhost =~ s/^\[(.*)\]$/$1/; |
380 | $upath .= "?$query" if length $query; |
407 | $upath .= $query if length $query; |
381 | |
408 | |
382 | $upath =~ s%^/?%/%; |
409 | $upath =~ s%^/?%/%; |
383 | |
410 | |
384 | # cookie processing |
411 | # cookie processing |
385 | if (my $jar = $arg{cookie_jar}) { |
412 | if (my $jar = $arg{cookie_jar}) { |
… | |
… | |
428 | |
455 | |
429 | # leave out fragment and query string, just a heuristic |
456 | # leave out fragment and query string, just a heuristic |
430 | $hdr{referer} ||= "$uscheme://$uauthority$upath" unless exists $hdr{referer}; |
457 | $hdr{referer} ||= "$uscheme://$uauthority$upath" unless exists $hdr{referer}; |
431 | $hdr{"user-agent"} ||= $USERAGENT unless exists $hdr{"user-agent"}; |
458 | $hdr{"user-agent"} ||= $USERAGENT unless exists $hdr{"user-agent"}; |
432 | |
459 | |
433 | $hdr{"content-length"} = length $arg{body}; |
460 | $hdr{"content-length"} = length $arg{body} |
|
|
461 | if length $arg{body} || $method ne "GET"; |
434 | |
462 | |
435 | my %state = (connect_guard => 1); |
463 | my %state = (connect_guard => 1); |
436 | |
464 | |
437 | _get_slot $uhost, sub { |
465 | _get_slot $uhost, sub { |
438 | $state{slot_guard} = shift; |
466 | $state{slot_guard} = shift; |
439 | |
467 | |
440 | return unless $state{connect_guard}; |
468 | return unless $state{connect_guard}; |
441 | |
469 | |
442 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
470 | my $tcp_connect = $arg{tcp_connect} |
|
|
471 | || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect }; |
|
|
472 | |
|
|
473 | $state{connect_guard} = $tcp_connect->( |
|
|
474 | $rhost, |
|
|
475 | $rport, |
|
|
476 | sub { |
443 | $state{fh} = shift |
477 | $state{fh} = shift |
444 | or do { |
478 | or do { |
445 | my $err = "$!"; |
479 | my $err = "$!"; |
446 | %state = (); |
480 | %state = (); |
447 | return $cb->(undef, { Status => 599, Reason => $err, URL => $url }); |
481 | return $cb->(undef, { Status => 599, Reason => $err, @pseudo }); |
448 | }; |
482 | }; |
449 | |
483 | |
450 | pop; # free memory, save a tree |
484 | pop; # free memory, save a tree |
451 | |
485 | |
452 | return unless delete $state{connect_guard}; |
486 | return unless delete $state{connect_guard}; |
453 | |
487 | |
454 | # get handle |
488 | # get handle |
455 | $state{handle} = new AnyEvent::Handle |
489 | $state{handle} = new AnyEvent::Handle |
456 | fh => $state{fh}, |
490 | fh => $state{fh}, |
|
|
491 | peername => $rhost, |
|
|
492 | tls_ctx => $arg{tls_ctx}, |
|
|
493 | # these need to be reconfigured on keepalive handles |
457 | timeout => $timeout, |
494 | timeout => $timeout, |
458 | peername => $rhost, |
495 | on_error => sub { |
459 | tls_ctx => $arg{tls_ctx}; |
496 | %state = (); |
|
|
497 | $cb->(undef, { Status => 599, Reason => $_[2], @pseudo }); |
|
|
498 | }, |
|
|
499 | on_eof => sub { |
|
|
500 | %state = (); |
|
|
501 | $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", @pseudo }); |
|
|
502 | }, |
|
|
503 | ; |
460 | |
504 | |
461 | # limit the number of persistent connections |
505 | # limit the number of persistent connections |
462 | # keepalive not yet supported |
506 | # keepalive not yet supported |
463 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
507 | # if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
464 | ++$KA_COUNT{$_[1]}; |
508 | # ++$KA_COUNT{$_[1]}; |
465 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
509 | # $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
466 | --$KA_COUNT{$_[1]} |
510 | # --$KA_COUNT{$_[1]} |
467 | }; |
511 | # }; |
468 | $hdr{connection} = "keep-alive"; |
512 | # $hdr{connection} = "keep-alive"; |
469 | } else { |
513 | # } else { |
470 | delete $hdr{connection}; |
514 | delete $hdr{connection}; |
471 | } |
515 | # } |
472 | |
516 | |
473 | # (re-)configure handle |
|
|
474 | $state{handle}->on_error (sub { |
|
|
475 | %state = (); |
|
|
476 | $cb->(undef, { Status => 599, Reason => $_[2], URL => $url }); |
|
|
477 | }); |
|
|
478 | $state{handle}->on_eof (sub { |
|
|
479 | %state = (); |
|
|
480 | $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url }); |
|
|
481 | }); |
|
|
482 | |
|
|
483 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
517 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
484 | |
518 | |
485 | # handle actual, non-tunneled, request |
519 | # handle actual, non-tunneled, request |
486 | my $handle_actual_request = sub { |
520 | my $handle_actual_request = sub { |
487 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
521 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
488 | |
522 | |
489 | # send request |
523 | # send request |
490 | $state{handle}->push_write ( |
524 | $state{handle}->push_write ( |
491 | "$method $rpath HTTP/1.0\015\012" |
525 | "$method $rpath HTTP/1.0\015\012" |
492 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
526 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
493 | . "\015\012" |
527 | . "\015\012" |
494 | . (delete $arg{body}) |
528 | . (delete $arg{body}) |
495 | ); |
|
|
496 | |
|
|
497 | %hdr = (); # reduce memory usage, save a kitten |
|
|
498 | |
|
|
499 | # status line |
|
|
500 | $state{handle}->push_read (line => $qr_nl, sub { |
|
|
501 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
|
|
502 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url })); |
|
|
503 | |
|
|
504 | my %hdr = ( # response headers |
|
|
505 | HTTPVersion => ",$1", |
|
|
506 | Status => ",$2", |
|
|
507 | Reason => ",$3", |
|
|
508 | URL => ",$url" |
|
|
509 | ); |
529 | ); |
510 | |
530 | |
511 | # headers, could be optimized a bit |
531 | # return if error occured during push_write() |
|
|
532 | return unless %state; |
|
|
533 | |
|
|
534 | %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use |
|
|
535 | |
|
|
536 | # status line and headers |
512 | $state{handle}->unshift_read (line => $qr_nlnl, sub { |
537 | $state{handle}->push_read (line => $qr_nlnl, sub { |
513 | for ("$_[1]") { |
538 | for ("$_[1]") { |
514 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
539 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
|
|
540 | |
|
|
541 | /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )? \015?\012/igxc |
|
|
542 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response", @pseudo })); |
|
|
543 | |
|
|
544 | push @pseudo, |
|
|
545 | HTTPVersion => $1, |
|
|
546 | Status => $2, |
|
|
547 | Reason => $3, |
|
|
548 | ; |
515 | |
549 | |
516 | # things seen, not parsed: |
550 | # things seen, not parsed: |
517 | # p3pP="NON CUR OTPi OUR NOR UNI" |
551 | # p3pP="NON CUR OTPi OUR NOR UNI" |
518 | |
552 | |
519 | $hdr{lc $1} .= ",$2" |
553 | $hdr{lc $1} .= ",$2" |
… | |
… | |
523 | ((?: [^\012]+ | \012[\011\040] )*) |
557 | ((?: [^\012]+ | \012[\011\040] )*) |
524 | \012 |
558 | \012 |
525 | /gxc; |
559 | /gxc; |
526 | |
560 | |
527 | /\G$/ |
561 | /\G$/ |
528 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url })); |
562 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", @pseudo })); |
529 | } |
563 | } |
530 | |
564 | |
|
|
565 | # remove the "," prefix we added to all headers above |
531 | substr $_, 0, 1, "" |
566 | substr $_, 0, 1, "" |
532 | for values %hdr; |
567 | for values %hdr; |
|
|
568 | |
|
|
569 | # patch in all pseudo headers |
|
|
570 | %hdr = (%hdr, @pseudo); |
533 | |
571 | |
534 | # redirect handling |
572 | # redirect handling |
535 | # microsoft and other shitheads don't give a shit for following standards, |
573 | # microsoft and other shitheads don't give a shit for following standards, |
536 | # try to support some common forms of broken Location headers. |
574 | # try to support some common forms of broken Location headers. |
537 | if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
575 | if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
… | |
… | |
548 | } |
586 | } |
549 | |
587 | |
550 | my $redirect; |
588 | my $redirect; |
551 | |
589 | |
552 | if ($recurse) { |
590 | if ($recurse) { |
553 | if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") { |
591 | my $status = $hdr{Status}; |
554 | # apparently, mozilla et al. just change POST to GET here |
592 | |
555 | # more research is needed before we do the same |
593 | # industry standard is to redirect POST as GET for |
556 | $redirect = 1; |
594 | # 301, 302 and 303, in contrast to http/1.0 and 1.1. |
557 | } elsif ($hdr{Status} == 303) { |
595 | # also, the UA should ask the user for 301 and 307 and POST, |
|
|
596 | # industry standard seems to be to simply follow. |
|
|
597 | # we go with the industry standard. |
|
|
598 | if ($status == 301 or $status == 302 or $status == 303) { |
558 | # even http/1.1 is unclear on how to mutate the method |
599 | # HTTP/1.1 is unclear on how to mutate the method |
559 | $method = "GET" unless $method eq "HEAD"; |
600 | $method = "GET" unless $method eq "HEAD"; |
560 | $redirect = 1; |
601 | $redirect = 1; |
561 | } elsif ($hdr{Status} == 307 && $method =~ /^(?:GET|HEAD)$/) { |
602 | } elsif ($status == 307) { |
562 | $redirect = 1; |
603 | $redirect = 1; |
563 | } |
604 | } |
564 | } |
605 | } |
565 | |
606 | |
566 | my $finish = sub { |
607 | my $finish = sub { |
… | |
… | |
619 | |
660 | |
620 | if ($redirect && exists $hdr{location}) { |
661 | if ($redirect && exists $hdr{location}) { |
621 | # we ignore any errors, as it is very common to receive |
662 | # we ignore any errors, as it is very common to receive |
622 | # Content-Length != 0 but no actual body |
663 | # Content-Length != 0 but no actual body |
623 | # we also access %hdr, as $_[1] might be an erro |
664 | # we also access %hdr, as $_[1] might be an erro |
624 | http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb); |
665 | http_request ( |
|
|
666 | $method => $hdr{location}, |
|
|
667 | %arg, |
|
|
668 | recurse => $recurse - 1, |
|
|
669 | Redirect => \@_, |
|
|
670 | $cb); |
625 | } else { |
671 | } else { |
626 | $cb->($_[0], $_[1]); |
672 | $cb->($_[0], $_[1]); |
627 | } |
673 | } |
628 | }; |
674 | }; |
629 | |
675 | |
630 | my $len = $hdr{"content-length"}; |
676 | my $len = $hdr{"content-length"}; |
631 | |
677 | |
632 | if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { |
678 | if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { |
633 | $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url }); |
679 | $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", @pseudo }); |
634 | } elsif ( |
680 | } elsif ( |
635 | $hdr{Status} =~ /^(?:1..|[23]04)$/ |
681 | $hdr{Status} =~ /^(?:1..|[23]04)$/ |
636 | or $method eq "HEAD" |
682 | or $method eq "HEAD" |
637 | or (defined $len && !$len) |
683 | or (defined $len && !$len) |
638 | ) { |
684 | ) { |
… | |
… | |
641 | } else { |
687 | } else { |
642 | # body handling, four different code paths |
688 | # body handling, four different code paths |
643 | # for want_body_handle, on_body (2x), normal (2x) |
689 | # for want_body_handle, on_body (2x), normal (2x) |
644 | # we might read too much here, but it does not matter yet (no pers. connections) |
690 | # we might read too much here, but it does not matter yet (no pers. connections) |
645 | if (!$redirect && $arg{want_body_handle}) { |
691 | if (!$redirect && $arg{want_body_handle}) { |
646 | $_[0]->on_eof (undef); |
692 | $_[0]->on_eof (undef); |
647 | $_[0]->on_error (undef); |
693 | $_[0]->on_error (undef); |
648 | $_[0]->on_read (undef); |
694 | $_[0]->on_read (undef); |
649 | |
695 | |
650 | $finish->(delete $state{handle}, \%hdr); |
696 | $finish->(delete $state{handle}, \%hdr); |
651 | |
697 | |
652 | } elsif ($arg{on_body}) { |
698 | } elsif ($arg{on_body}) { |
653 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) }); |
699 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) }); |
654 | if ($len) { |
700 | if ($len) { |
655 | $_[0]->on_eof (undef); |
701 | $_[0]->on_eof (undef); |
656 | $_[0]->on_read (sub { |
702 | $_[0]->on_read (sub { |
657 | $len -= length $_[0]{rbuf}; |
703 | $len -= length $_[0]{rbuf}; |
658 | |
704 | |
659 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
705 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
660 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url }); |
706 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo }); |
661 | |
707 | |
662 | $len > 0 |
708 | $len > 0 |
663 | or $finish->("", \%hdr); |
709 | or $finish->("", \%hdr); |
664 | }); |
710 | }); |
665 | } else { |
711 | } else { |
666 | $_[0]->on_eof (sub { |
712 | $_[0]->on_eof (sub { |
667 | $finish->("", \%hdr); |
713 | $finish->("", \%hdr); |
668 | }); |
714 | }); |
669 | $_[0]->on_read (sub { |
715 | $_[0]->on_read (sub { |
670 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
716 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
671 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url }); |
717 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", @pseudo }); |
672 | }); |
718 | }); |
673 | } |
719 | } |
674 | } else { |
720 | } else { |
675 | $_[0]->on_eof (undef); |
721 | $_[0]->on_eof (undef); |
676 | |
722 | |
677 | if ($len) { |
723 | if ($len) { |
678 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) }); |
724 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }) }); |
679 | $_[0]->on_read (sub { |
725 | $_[0]->on_read (sub { |
680 | $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr) |
726 | $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr) |
681 | if $len <= length $_[0]{rbuf}; |
727 | if $len <= length $_[0]{rbuf}; |
682 | }); |
728 | }); |
683 | } else { |
729 | } else { |
684 | $_[0]->on_error (sub { |
730 | $_[0]->on_error (sub { |
685 | $! == Errno::EPIPE || !$! |
731 | ($! == Errno::EPIPE || !$!) |
686 | ? $finish->(delete $_[0]{rbuf}, \%hdr) |
732 | ? $finish->(delete $_[0]{rbuf}, \%hdr) |
687 | : $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }); |
733 | : $finish->(undef, { Status => 599, Reason => $_[2], @pseudo }); |
688 | }); |
734 | }); |
689 | $_[0]->on_read (sub { }); |
735 | $_[0]->on_read (sub { }); |
690 | } |
736 | } |
691 | } |
737 | } |
692 | } |
738 | } |
693 | }); |
739 | }); |
694 | }); |
740 | }; |
695 | }; |
|
|
696 | |
741 | |
697 | # now handle proxy-CONNECT method |
742 | # now handle proxy-CONNECT method |
698 | if ($proxy && $uscheme eq "https") { |
743 | if ($proxy && $uscheme eq "https") { |
699 | # oh dear, we have to wrap it into a connect request |
744 | # oh dear, we have to wrap it into a connect request |
700 | |
745 | |
701 | # maybe re-use $uauthority with patched port? |
746 | # maybe re-use $uauthority with patched port? |
702 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
747 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
703 | $state{handle}->push_read (line => $qr_nlnl, sub { |
748 | $state{handle}->push_read (line => $qr_nlnl, sub { |
704 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
749 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
705 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url })); |
750 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", @pseudo })); |
706 | |
751 | |
707 | if ($2 == 200) { |
752 | if ($2 == 200) { |
708 | $rpath = $upath; |
753 | $rpath = $upath; |
709 | &$handle_actual_request; |
754 | &$handle_actual_request; |
710 | } else { |
755 | } else { |
711 | %state = (); |
756 | %state = (); |
712 | $cb->(undef, { Status => $2, Reason => $3, URL => $url }); |
757 | $cb->(undef, { Status => $2, Reason => $3, @pseudo }); |
|
|
758 | } |
713 | } |
759 | }); |
714 | }); |
|
|
715 | } else { |
760 | } else { |
716 | &$handle_actual_request; |
761 | &$handle_actual_request; |
|
|
762 | } |
|
|
763 | |
717 | } |
764 | }, |
718 | |
|
|
719 | }, $arg{on_prepare} || sub { $timeout }; |
765 | $arg{on_prepare} || sub { $timeout } |
|
|
766 | ); |
720 | }; |
767 | }; |
721 | |
768 | |
722 | defined wantarray && AnyEvent::Util::guard { %state = () } |
769 | defined wantarray && AnyEvent::Util::guard { %state = () } |
723 | } |
770 | } |
724 | |
771 | |
… | |
… | |
737 | unshift @_, "POST", $url, "body"; |
784 | unshift @_, "POST", $url, "body"; |
738 | &http_request |
785 | &http_request |
739 | } |
786 | } |
740 | |
787 | |
741 | =back |
788 | =back |
|
|
789 | |
|
|
790 | =head2 DNS CACHING |
|
|
791 | |
|
|
792 | AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for |
|
|
793 | the actual connection, which in turn uses AnyEvent::DNS to resolve |
|
|
794 | hostnames. The latter is a simple stub resolver and does no caching |
|
|
795 | on its own. If you want DNS caching, you currently have to provide |
|
|
796 | your own default resolver (by storing a suitable resolver object in |
|
|
797 | C<$AnyEvent::DNS::RESOLVER>). |
742 | |
798 | |
743 | =head2 GLOBAL FUNCTIONS AND VARIABLES |
799 | =head2 GLOBAL FUNCTIONS AND VARIABLES |
744 | |
800 | |
745 | =over 4 |
801 | =over 4 |
746 | |
802 | |
… | |
… | |
793 | # initialise proxy from environment |
849 | # initialise proxy from environment |
794 | eval { |
850 | eval { |
795 | set_proxy $ENV{http_proxy}; |
851 | set_proxy $ENV{http_proxy}; |
796 | }; |
852 | }; |
797 | |
853 | |
|
|
854 | =head2 SOCKS PROXIES |
|
|
855 | |
|
|
856 | Socks proxies are not directly supported by AnyEvent::HTTP. You can |
|
|
857 | compile your perl to support socks, or use an external program such as |
|
|
858 | F<socksify> (dante) or F<tsocks> to make your program use a socks proxy |
|
|
859 | transparently. |
|
|
860 | |
|
|
861 | Alternatively, for AnyEvent::HTTP only, you can use your own |
|
|
862 | C<tcp_connect> function that does the proxy handshake - here is an example |
|
|
863 | that works with socks4a proxies: |
|
|
864 | |
|
|
865 | use Errno; |
|
|
866 | use AnyEvent::Util; |
|
|
867 | use AnyEvent::Socket; |
|
|
868 | use AnyEvent::Handle; |
|
|
869 | |
|
|
870 | # host, port and username of/for your socks4a proxy |
|
|
871 | my $socks_host = "10.0.0.23"; |
|
|
872 | my $socks_port = 9050; |
|
|
873 | my $socks_user = ""; |
|
|
874 | |
|
|
875 | sub socks4a_connect { |
|
|
876 | my ($host, $port, $connect_cb, $prepare_cb) = @_; |
|
|
877 | |
|
|
878 | my $hdl = new AnyEvent::Handle |
|
|
879 | connect => [$socks_host, $socks_port], |
|
|
880 | on_prepare => sub { $prepare_cb->($_[0]{fh}) }, |
|
|
881 | on_error => sub { $connect_cb->() }, |
|
|
882 | ; |
|
|
883 | |
|
|
884 | $hdl->push_write (pack "CCnNZ*Z*", 4, 1, $port, 1, $socks_user, $host); |
|
|
885 | |
|
|
886 | $hdl->push_read (chunk => 8, sub { |
|
|
887 | my ($hdl, $chunk) = @_; |
|
|
888 | my ($status, $port, $ipn) = unpack "xCna4", $chunk; |
|
|
889 | |
|
|
890 | if ($status == 0x5a) { |
|
|
891 | $connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port"); |
|
|
892 | } else { |
|
|
893 | $! = Errno::ENXIO; $connect_cb->(); |
|
|
894 | } |
|
|
895 | }); |
|
|
896 | |
|
|
897 | $hdl |
|
|
898 | } |
|
|
899 | |
|
|
900 | Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s, |
|
|
901 | possibly after switching off other proxy types: |
|
|
902 | |
|
|
903 | AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies |
|
|
904 | |
|
|
905 | http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub { |
|
|
906 | my ($data, $headers) = @_; |
|
|
907 | ... |
|
|
908 | }; |
|
|
909 | |
798 | =head1 SEE ALSO |
910 | =head1 SEE ALSO |
799 | |
911 | |
800 | L<AnyEvent>. |
912 | L<AnyEvent>. |
801 | |
913 | |
802 | =head1 AUTHOR |
914 | =head1 AUTHOR |