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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.40 by root, Sun Jul 5 01:45:01 2009 UTC vs.
Revision 1.50 by root, Tue Aug 11 13:20:42 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 4.452 (); 46use AnyEvent 4.8 ();
47use AnyEvent::Util (); 47use AnyEvent::Util ();
48use AnyEvent::Socket (); 48use AnyEvent::Socket ();
49use AnyEvent::Handle (); 49use AnyEvent::Handle ();
50 50
51use base Exporter::; 51use base Exporter::;
52 52
53our $VERSION = '1.12'; 53our $VERSION = '1.42';
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;
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
… …
108 108
109If the server sends a header multiple times, then their contents will be 109If the server sends a header multiple times, then their contents will be
110joined together with a comma (C<,>), as per the HTTP spec. 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) = @_;
… …
137 138
138=item headers => hashref 139=item headers => hashref
139 140
140The request headers to use. Currently, C<http_request> may provide its 141The request headers to use. Currently, C<http_request> may provide its
141own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers 142own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
142and will provide defaults for C<User-Agent:> and C<Referer:>. 143and will provide defaults for C<User-Agent:> and C<Referer:> (this can be
144suppressed by using C<undef> for these headers in which case they won't be
145sent at all).
143 146
144=item timeout => $seconds 147=item timeout => $seconds
145 148
146The time-out to use for various stages - each connect attempt will reset 149The time-out to use for various stages - each connect attempt will reset
147the timeout, as will read or write activity. Default timeout is 5 minutes. 150the timeout, as will read or write activity. Default timeout is 5 minutes.
… …
149=item proxy => [$host, $port[, $scheme]] or undef 152=item proxy => [$host, $port[, $scheme]] or undef
150 153
151Use the given http proxy for all requests. If not specified, then the 154Use the given http proxy for all requests. If not specified, then the
152default proxy (as specified by C<$ENV{http_proxy}>) is used. 155default proxy (as specified by C<$ENV{http_proxy}>) is used.
153 156
154C<$scheme> must be either missing or C<http> for HTTP, or C<https> for 157C<$scheme> must be either missing, C<http> for HTTP or C<https> for
155HTTPS. 158HTTPS.
156 159
157=item body => $string 160=item body => $string
158 161
159The request body, usually empty. Will be-sent as-is (future versions of 162The request body, usually empty. Will be-sent as-is (future versions of
… …
184verification, highest compatibility) and high-security (CA and common-name 187verification, highest compatibility) and high-security (CA and common-name
185verification) TLS context. 188verification) TLS context.
186 189
187The default for this option is C<low>, which could be interpreted as "give 190The default for this option is C<low>, which could be interpreted as "give
188me the page, no matter what". 191me the page, no matter what".
192
193=item on_header => $callback->($headers)
194
195When specified, this callback will be called with the header hash as soon
196as headers have been successfully received from the remote server (not on
197locally-generated errors).
198
199It has to return either true (in which case AnyEvent::HTTP will continue),
200or false, in which case AnyEvent::HTTP will cancel the download (and call
201the finish callback with an error code of C<598>).
202
203This callback is useful, among other things, to quickly reject unwanted
204content, which, if it is supposed to be rare, can be faster than first
205doing a C<HEAD> request.
206
207Example: cancel the request unless the content-type is "text/html".
208
209 on_header => sub {
210 $_[0]{"content-type"} =~ /^text\/html\s*(?:;|$)/
211 },
212
213=item on_body => $callback->($partial_body, $headers)
214
215When specified, all body data will be passed to this callback instead of
216to the completion callback. The completion callback will get the empty
217string instead of the body data.
218
219It has to return either true (in which case AnyEvent::HTTP will continue),
220or false, in which case AnyEvent::HTTP will cancel the download (and call
221the completion callback with an error code of C<598>).
222
223This callback is useful when the data is too large to be held in memory
224(so the callback writes it to a file) or when only some information should
225be extracted, or when the body should be processed incrementally.
226
227It is usually preferred over doing your own body handling via
228C<want_body_handle>, but in case of streaming APIs, where HTTP is
229only used to create a connection, C<want_body_handle> is the better
230alternative, as it allows you to install your own event handler, reducing
231resource usage.
232
233=item want_body_handle => $enable
234
235When enabled (default is disabled), the behaviour of AnyEvent::HTTP
236changes considerably: after parsing the headers, and instead of
237downloading the body (if any), the completion callback will be
238called. Instead of the C<$body> argument containing the body data, the
239callback will receive the L<AnyEvent::Handle> object associated with the
240connection. In error cases, C<undef> will be passed. When there is no body
241(e.g. status C<304>), the empty string will be passed.
242
243The handle object might or might not be in TLS mode, might be connected to
244a proxy, be a persistent connection etc., and configured in unspecified
245ways. The user is responsible for this handle (it will not be used by this
246module anymore).
247
248This is useful with some push-type services, where, after the initial
249headers, an interactive protocol is used (typical example would be the
250push-style twitter API which starts a JSON/XML stream).
251
252If you think you need this, first have a look at C<on_body>, to see if
253that doesn't solve your problem in a better way.
189 254
190=back 255=back
191 256
192Example: make a simple HTTP GET request for http://www.nethype.de/ 257Example: make a simple HTTP GET request for http://www.nethype.de/
193 258
… …
249 push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; 314 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
250 315
251 _slot_schedule $_[0]; 316 _slot_schedule $_[0];
252} 317}
253 318
254our $qr_nl = qr<\015?\012>; 319our $qr_nl = qr{\015?\012};
255our $qr_nlnl = qr<\015?\012\015?\012>; 320our $qr_nlnl = qr{(?<![^\012])\015?\012};
256 321
257our $TLS_CTX_LOW = { cache => 1, dh => undef, sslv2 => 1 }; 322our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 };
258our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_cn => "https", dh => "skip4096" }; 323our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" };
259 324
260sub http_request($$@) { 325sub http_request($$@) {
261 my $cb = pop; 326 my $cb = pop;
262 my ($method, $url, %arg) = @_; 327 my ($method, $url, %arg) = @_;
263 328
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280 if $recurse < 0; 345 if $recurse < 0;
281 346
282 my $proxy = $arg{proxy} || $PROXY; 347 my $proxy = $arg{proxy} || $PROXY;
283 my $timeout = $arg{timeout} || $TIMEOUT; 348 my $timeout = $arg{timeout} || $TIMEOUT;
284 349
285 $hdr{"user-agent"} ||= $USERAGENT;
286
287 my ($uscheme, $uauthority, $upath, $query, $fragment) = 350 my ($uscheme, $uauthority, $upath, $query, $fragment) =
288 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; 351 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
289 352
290 $uscheme = lc $uscheme; 353 $uscheme = lc $uscheme;
291 354
292 my $uport = $uscheme eq "http" ? 80 355 my $uport = $uscheme eq "http" ? 80
293 : $uscheme eq "https" ? 443 356 : $uscheme eq "https" ? 443
294 : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported (not '$uscheme')", URL => $url }); 357 : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url });
295
296 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
297 358
298 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 359 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
299 or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url }); 360 or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url });
300 361
301 my $uhost = $1; 362 my $uhost = $1;
302 $uport = $2 if defined $2; 363 $uport = $2 if defined $2;
364
365 $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost";
303 366
304 $uhost =~ s/^\[(.*)\]$/$1/; 367 $uhost =~ s/^\[(.*)\]$/$1/;
305 $upath .= "?$query" if length $query; 368 $upath .= "?$query" if length $query;
306 369
307 $upath =~ s%^/?%/%; 370 $upath =~ s%^/?%/%;
… …
340 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path 403 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
341 404
342 if ($proxy) { 405 if ($proxy) {
343 ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy); 406 ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
344 407
408 $rscheme = "http" unless defined $rscheme;
409
345 # don't support https requests over https-proxy transport, 410 # don't support https requests over https-proxy transport,
346 # can't be done with tls as spec'ed, unless you double-encrypt. 411 # can't be done with tls as spec'ed, unless you double-encrypt.
347 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; 412 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
348 } else { 413 } else {
349 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); 414 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
350 } 415 }
351 416
352 $hdr{host} = $uhost; 417 # leave out fragment and query string, just a heuristic
418 $hdr{referer} ||= "$uscheme://$uauthority$upath" unless exists $hdr{referer};
419 $hdr{"user-agent"} ||= $USERAGENT unless exists $hdr{"user-agent"};
420
353 $hdr{"content-length"} = length $arg{body}; 421 $hdr{"content-length"} = length $arg{body};
354 422
355 my %state = (connect_guard => 1); 423 my %state = (connect_guard => 1);
356 424
357 _get_slot $uhost, sub { 425 _get_slot $uhost, sub {
… …
359 427
360 return unless $state{connect_guard}; 428 return unless $state{connect_guard};
361 429
362 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 430 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
363 $state{fh} = shift 431 $state{fh} = shift
432 or do {
433 my $err = "$!";
434 %state = ();
364 or return (%state = (), $cb->(undef, { Status => 599, Reason => "$!", URL => $url })); 435 return $cb->(undef, { Status => 599, Reason => $err, URL => $url });
436 };
437
365 pop; # free memory, save a tree 438 pop; # free memory, save a tree
366 439
367 return unless delete $state{connect_guard}; 440 return unless delete $state{connect_guard};
368 441
369 # get handle 442 # get handle
… …
402 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; 475 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
403 476
404 # send request 477 # send request
405 $state{handle}->push_write ( 478 $state{handle}->push_write (
406 "$method $rpath HTTP/1.0\015\012" 479 "$method $rpath HTTP/1.0\015\012"
407 . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr) 480 . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr)
408 . "\015\012" 481 . "\015\012"
409 . (delete $arg{body}) 482 . (delete $arg{body})
410 ); 483 );
411 484
412 %hdr = (); # reduce memory usage, save a kitten 485 %hdr = (); # reduce memory usage, save a kitten
… …
423 URL => ",$url" 496 URL => ",$url"
424 ); 497 );
425 498
426 # headers, could be optimized a bit 499 # headers, could be optimized a bit
427 $state{handle}->unshift_read (line => $qr_nlnl, sub { 500 $state{handle}->unshift_read (line => $qr_nlnl, sub {
428 for ("$_[1]\012") { 501 for ("$_[1]") {
429 y/\015//d; # weed out any \015, as they show up in the weirdest of places. 502 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
430 503
431 # things seen, not parsed: 504 # things seen, not parsed:
432 # p3pP="NON CUR OTPi OUR NOR UNI" 505 # p3pP="NON CUR OTPi OUR NOR UNI"
433 506
434 $hdr{lc $1} .= ",$2" 507 $hdr{lc $1} .= ",$2"
435 while /\G 508 while /\G
436 ([^:\000-\037]+): 509 ([^:\000-\037]*):
437 [\011\040]* 510 [\011\040]*
438 ((?: [^\012]+ | \012[\011\040] )*) 511 ((?: [^\012]+ | \012[\011\040] )*)
439 \012 512 \012
440 /gxc; 513 /gxc;
441 514
… …
444 } 517 }
445 518
446 substr $_, 0, 1, "" 519 substr $_, 0, 1, ""
447 for values %hdr; 520 for values %hdr;
448 521
522 # redirect handling
523 # microsoft and other shitheads don't give a shit for following standards,
524 # try to support some common forms of broken Location headers.
525 if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
526 $hdr{location} =~ s/^\.\/+//;
527
528 my $url = "$rscheme://$uhost:$uport";
529
530 unless ($hdr{location} =~ s/^\///) {
531 $url .= $upath;
532 $url =~ s/\/[^\/]*$//;
533 }
534
535 $hdr{location} = "$url/$hdr{location}";
536 }
537
538 my $redirect;
539
540 if ($recurse) {
541 if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") {
542 # apparently, mozilla et al. just change POST to GET here
543 # more research is needed before we do the same
544 $redirect = 1;
545 } elsif ($hdr{Status} == 303) {
546 # even http/1.1 is unclear on how to mutate the method
547 $method = "GET" unless $method eq "HEAD";
548 $redirect = 1;
549 } elsif ($hdr{Status} == 307 && $method =~ /^(?:GET|HEAD)$/) {
550 $redirect = 1;
551 }
552 }
553
449 my $finish = sub { 554 my $finish = sub {
450 $state{handle}->destroy; 555 $state{handle}->destroy if $state{handle};
451 %state = (); 556 %state = ();
452 557
453 # set-cookie processing 558 # set-cookie processing
454 if ($arg{cookie_jar}) { 559 if ($arg{cookie_jar}) {
455 for ($hdr{"set-cookie"}) { 560 for ($_[1]{"set-cookie"}) {
456 # parse NAME=VALUE 561 # parse NAME=VALUE
457 my @kv; 562 my @kv;
458 563
459 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) { 564 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
460 my $name = $1; 565 my $name = $1;
… …
498 603
499 redo if /\G\s*,/gc; 604 redo if /\G\s*,/gc;
500 } 605 }
501 } 606 }
502 607
503 # microsoft and other shitheads don't give a shit for following standards, 608 if ($redirect && exists $hdr{location}) {
504 # try to support some common forms of broken Location headers. 609 # we ignore any errors, as it is very common to receive
505 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { 610 # Content-Length != 0 but no actual body
506 $_[1]{location} =~ s/^\.\/+//; 611 # we also access %hdr, as $_[1] might be an erro
507
508 my $url = "$rscheme://$uhost:$uport";
509
510 unless ($_[1]{location} =~ s/^\///) {
511 $url .= $upath;
512 $url =~ s/\/[^\/]*$//;
513 }
514
515 $_[1]{location} = "$url/$_[1]{location}";
516 }
517
518 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
519 # apparently, mozilla et al. just change POST to GET here
520 # more research is needed before we do the same
521 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb); 612 http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb);
522 } elsif ($_[1]{Status} == 303 && $recurse) {
523 # even http/1.1 is unclear on how to mutate the method
524 $method = "GET" unless $method eq "HEAD";
525 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
526 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) {
527 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
528 } else { 613 } else {
529 $cb->($_[0], $_[1]); 614 $cb->($_[0], $_[1]);
530 } 615 }
531 }; 616 };
532 617
533 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { 618 my $len = $hdr{"content-length"};
619
620 if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) {
621 $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url });
622 } elsif (
623 $hdr{Status} =~ /^(?:1..|[23]04)$/
624 or $method eq "HEAD"
625 or (defined $len && !$len)
626 ) {
627 # no body
534 $finish->(undef, \%hdr); 628 $finish->("", \%hdr);
535 } else { 629 } else {
536 if (exists $hdr{"content-length"}) { 630 # body handling, four different code paths
537 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { 631 # for want_body_handle, on_body (2x), normal (2x)
538 # could cache persistent connection now 632 # we might read too much here, but it does not matter yet (no pers. connections)
539 if ($hdr{connection} =~ /\bkeep-alive\b/i) { 633 if (!$redirect && $arg{want_body_handle}) {
540 # but we don't, due to misdesigns, this is annoyingly complex 634 $_[0]->on_eof (undef);
635 $_[0]->on_error (undef);
636 $_[0]->on_read (undef);
637
638 $finish->(delete $state{handle}, \%hdr);
639
640 } elsif ($arg{on_body}) {
641 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
642 if ($len) {
643 $_[0]->on_eof (undef);
644 $_[0]->on_read (sub {
645 $len -= length $_[0]{rbuf};
646
647 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
648 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
649
650 $len > 0
651 or $finish->("", \%hdr);
541 }; 652 });
542 653 } else {
654 $_[0]->on_eof (sub {
543 $finish->($_[1], \%hdr); 655 $finish->("", \%hdr);
656 });
657 $_[0]->on_read (sub {
658 $arg{on_body}(delete $_[0]{rbuf}, \%hdr)
659 or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url });
660 });
544 }); 661 }
545 } else { 662 } else {
546 # too bad, need to read until we get an error or EOF,
547 # no way to detect winged data.
548 $_[0]->on_error (sub {
549 # delete ought to be more efficient, as we would have to make
550 # a copy otherwise as $_[0] gets destroyed.
551 $finish->(delete $_[0]{rbuf}, \%hdr);
552 });
553 $_[0]->on_eof (undef); 663 $_[0]->on_eof (undef);
664
665 if ($len) {
666 $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) });
667 $_[0]->on_read (sub {
668 $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr)
669 if $len <= length $_[0]{rbuf};
670 });
671 } else {
672 $_[0]->on_error (sub {
673 $! == Errno::EPIPE || !$!
674 ? $finish->(delete $_[0]{rbuf}, \%hdr)
675 : $finish->(undef, { Status => 599, Reason => $_[2], URL => $url });
676 });
554 $_[0]->on_read (sub { }); 677 $_[0]->on_read (sub { });
678 }
555 } 679 }
556 } 680 }
557 }); 681 });
558 }); 682 });
559 }; 683 };
… …
578 }); 702 });
579 } else { 703 } else {
580 &$handle_actual_request; 704 &$handle_actual_request;
581 } 705 }
582 706
583 }, sub { 707 }, $arg{on_prepare} || sub { $timeout };
584 $timeout
585 };
586 }; 708 };
587 709
588 defined wantarray && AnyEvent::Util::guard { %state = () } 710 defined wantarray && AnyEvent::Util::guard { %state = () }
589} 711}
590 712
… …
622=item $AnyEvent::HTTP::USERAGENT 744=item $AnyEvent::HTTP::USERAGENT
623 745
624The default value for the C<User-Agent> header (the default is 746The default value for the C<User-Agent> header (the default is
625C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). 747C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
626 748
627=item $AnyEvent::HTTP::MAX_PERSISTENT 749=item $AnyEvent::HTTP::MAX_PER_HOST
628 750
629The maximum number of persistent connections to keep open (default: 8). 751The maximum number of concurrent connections to the same host (identified
752by the hostname). If the limit is exceeded, then the additional requests
753are queued until previous connections are closed.
630 754
631Not implemented currently. 755The default value for this is C<4>, and it is highly advisable to not
632 756increase it.
633=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
634
635The maximum time to cache a persistent connection, in seconds (default: 2).
636
637Not implemented currently.
638 757
639=item $AnyEvent::HTTP::ACTIVE 758=item $AnyEvent::HTTP::ACTIVE
640 759
641The number of active connections. This is not the number of currently 760The number of active connections. This is not the number of currently
642running requests, but the number of currently open and non-idle TCP 761running requests, but the number of currently open and non-idle TCP

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