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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.11 by root, Thu Jun 5 15:34:00 2008 UTC vs.
Revision 1.37 by root, Fri Nov 21 08:20:14 2008 UTC

… …
3AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client 3AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client
4 4
5=head1 SYNOPSIS 5=head1 SYNOPSIS
6 6
7 use AnyEvent::HTTP; 7 use AnyEvent::HTTP;
8
9 http_get "http://www.nethype.de/", sub { print $_[1] };
10
11 # ... do something else here
8 12
9=head1 DESCRIPTION 13=head1 DESCRIPTION
10 14
11This module is an L<AnyEvent> user, you need to make sure that you use and 15This module is an L<AnyEvent> user, you need to make sure that you use and
12run a supported event loop. 16run a supported event loop.
… …
44use AnyEvent::Socket (); 48use AnyEvent::Socket ();
45use AnyEvent::Handle (); 49use AnyEvent::Handle ();
46 50
47use base Exporter::; 51use base Exporter::;
48 52
49our $VERSION = '1.0'; 53our $VERSION = '1.11';
50 54
51our @EXPORT = qw(http_get http_request); 55our @EXPORT = qw(http_get http_post http_head http_request);
52 56
53our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; 57our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
54our $MAX_RECURSE = 10; 58our $MAX_RECURSE = 10;
55our $MAX_PERSISTENT = 8; 59our $MAX_PERSISTENT = 8;
56our $PERSISTENT_TIMEOUT = 2; 60our $PERSISTENT_TIMEOUT = 2;
… …
59# changing these is evil 63# changing these is evil
60our $MAX_PERSISTENT_PER_HOST = 2; 64our $MAX_PERSISTENT_PER_HOST = 2;
61our $MAX_PER_HOST = 4; 65our $MAX_PER_HOST = 4;
62 66
63our $PROXY; 67our $PROXY;
68our $ACTIVE = 0;
64 69
65my %KA_COUNT; # number of open keep-alive connections per host 70my %KA_COUNT; # number of open keep-alive connections per host
66my %CO_SLOT; # number of open connections, and wait queue, per host 71my %CO_SLOT; # number of open connections, and wait queue, per host
67 72
68=item http_get $url, key => value..., $cb->($data, $headers) 73=item http_get $url, key => value..., $cb->($data, $headers)
69 74
70Executes an HTTP-GET request. See the http_request function for details on 75Executes an HTTP-GET request. See the http_request function for details on
71additional parameters. 76additional parameters and the return value.
72 77
73=item http_head $url, key => value..., $cb->($data, $headers) 78=item http_head $url, key => value..., $cb->($data, $headers)
74 79
75Executes an HTTP-HEAD request. See the http_request function for details on 80Executes an HTTP-HEAD request. See the http_request function for details
76additional parameters. 81on additional parameters and the return value.
77 82
78=item http_post $url, $body, key => value..., $cb->($data, $headers) 83=item http_post $url, $body, key => value..., $cb->($data, $headers)
79 84
80Executes an HTTP-POST request with a request body of C<$bod>. See the 85Executes an HTTP-POST request with a request body of C<$body>. See the
81http_request function for details on additional parameters. 86http_request function for details on additional parameters and the return
87value.
82 88
83=item http_request $method => $url, key => value..., $cb->($data, $headers) 89=item http_request $method => $url, key => value..., $cb->($data, $headers)
84 90
85Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL 91Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
86must be an absolute http or https URL. 92must be an absolute http or https URL.
93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
87 98
88The callback will be called with the response data as first argument 99The callback will be called with the response data as first argument
89(or C<undef> if it wasn't available due to errors), and a hash-ref with 100(or C<undef> if it wasn't available due to errors), and a hash-ref with
90response headers as second argument. 101response headers as second argument.
91 102
92All the headers in that hash are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
93headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
94C<Reason> contain the three parts of the HTTP Status-Line of the same 105contain the three parts of the HTTP Status-Line of the same name. The
106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
95name. If the server sends a header multiple lines, then their contents 109If the server sends a header multiple times, then their contents will be
96will be joined together with C<\x00>. 110joined together with a comma (C<,>), as per the HTTP spec.
97 111
98If an internal error occurs, such as not being able to resolve a hostname, 112If an internal error occurs, such as not being able to resolve a hostname,
99then C<$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<599>
100and the C<Reason> pseudo-header will contain an error message. 114and the C<Reason> pseudo-header will contain an error message.
101 115
… …
121Whether to recurse requests or not, e.g. on redirects, authentication 135Whether to recurse requests or not, e.g. on redirects, authentication
122retries and so on, and how often to do so. 136retries and so on, and how often to do so.
123 137
124=item headers => hashref 138=item headers => hashref
125 139
126The request headers to use. 140The request headers to use. Currently, C<http_request> may provide its
141own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers
142and will provide defaults for C<User-Agent:> and C<Referer:>.
127 143
128=item timeout => $seconds 144=item timeout => $seconds
129 145
130The time-out to use for various stages - each connect attempt will reset 146The time-out to use for various stages - each connect attempt will reset
131the timeout, as will read or write activity. Default timeout is 5 minutes. 147the timeout, as will read or write activity. Default timeout is 5 minutes.
… …
179 use Data::Dumper; 195 use Data::Dumper;
180 print Dumper $hdr; 196 print Dumper $hdr;
181 } 197 }
182 ; 198 ;
183 199
200Example: make another simple HTTP GET request, but immediately try to
201cancel it.
202
203 my $request = http_request GET => "http://www.nethype.de/", sub {
204 my ($body, $hdr) = @_;
205 print "$body\n";
206 };
207
208 undef $request;
209
184=cut 210=cut
185 211
212sub _slot_schedule;
186sub _slot_schedule($) { 213sub _slot_schedule($) {
187 my $host = shift; 214 my $host = shift;
188 215
189 while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) { 216 while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) {
190 if (my $cb = shift @{ $CO_SLOT{$host}[1] }) { 217 if (my $cb = shift @{ $CO_SLOT{$host}[1] }) {
191 # somebody wnats that slot 218 # somebody wants that slot
192 ++$CO_SLOT{$host}[0]; 219 ++$CO_SLOT{$host}[0];
220 ++$ACTIVE;
193 221
194 $cb->(AnyEvent::Util::guard { 222 $cb->(AnyEvent::Util::guard {
223 --$ACTIVE;
195 --$CO_SLOT{$host}[0]; 224 --$CO_SLOT{$host}[0];
196 _slot_schedule $host; 225 _slot_schedule $host;
197 }); 226 });
198 } else { 227 } else {
199 # nobody wants the slot, maybe we can forget about it 228 # nobody wants the slot, maybe we can forget about it
200 delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0]; 229 delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0];
201 warn "$host deleted" unless $CO_SLOT{$host}[0];#d#
202 last; 230 last;
203 } 231 }
204 } 232 }
205} 233}
206 234
… …
209 push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; 237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
210 238
211 _slot_schedule $_[0]; 239 _slot_schedule $_[0];
212} 240}
213 241
242our $qr_nl = qr<\015?\012>;
243our $qr_nlnl = qr<\015?\012\015?\012>;
244
214sub http_request($$$;@) { 245sub http_request($$@) {
215 my $cb = pop; 246 my $cb = pop;
216 my ($method, $url, %arg) = @_; 247 my ($method, $url, %arg) = @_;
217 248
218 my %hdr; 249 my %hdr;
219 250
… …
223 while (my ($k, $v) = each %$hdr) { 254 while (my ($k, $v) = each %$hdr) {
224 $hdr{lc $k} = $v; 255 $hdr{lc $k} = $v;
225 } 256 }
226 } 257 }
227 258
228 my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; 259 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
229 260
230 return $cb->(undef, { Status => 599, Reason => "recursion limit reached" }) 261 return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })
231 if $recurse < 0; 262 if $recurse < 0;
232 263
233 my $proxy = $arg{proxy} || $PROXY; 264 my $proxy = $arg{proxy} || $PROXY;
234 my $timeout = $arg{timeout} || $TIMEOUT; 265 my $timeout = $arg{timeout} || $TIMEOUT;
235 266
236 $hdr{"user-agent"} ||= $USERAGENT; 267 $hdr{"user-agent"} ||= $USERAGENT;
237 268
238 my ($scheme, $authority, $upath, $query, $fragment) = 269 my ($uscheme, $uauthority, $upath, $query, $fragment) =
239 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; 270 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
240 271
241 $scheme = lc $scheme; 272 $uscheme = lc $uscheme;
242 273
243 my $uport = $scheme eq "http" ? 80 274 my $uport = $uscheme eq "http" ? 80
244 : $scheme eq "https" ? 443 275 : $uscheme eq "https" ? 443
245 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" }); 276 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
246 277
278 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
279
247 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 280 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
248 or return $cb->(undef, { Status => 599, Reason => "unparsable URL" }); 281 or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });
249 282
250 my $uhost = $1; 283 my $uhost = $1;
251 $uport = $2 if defined $2; 284 $uport = $2 if defined $2;
252 285
253 $uhost =~ s/^\[(.*)\]$/$1/; 286 $uhost =~ s/^\[(.*)\]$/$1/;
… …
255 288
256 $upath =~ s%^/?%/%; 289 $upath =~ s%^/?%/%;
257 290
258 # cookie processing 291 # cookie processing
259 if (my $jar = $arg{cookie_jar}) { 292 if (my $jar = $arg{cookie_jar}) {
260 %$jar = () if $jar->{version} < 1; 293 %$jar = () if $jar->{version} != 1;
261 294
262 my @cookie; 295 my @cookie;
263 296
264 while (my ($chost, $v) = each %$jar) { 297 while (my ($chost, $v) = each %$jar) {
298 if ($chost =~ /^\./) {
265 next unless $chost eq substr $uhost, -length $chost; 299 next unless $chost eq substr $uhost, -length $chost;
266 next unless $chost =~ /^\./; 300 } elsif ($chost =~ /\./) {
301 next unless $chost eq $uhost;
302 } else {
303 next;
304 }
267 305
268 while (my ($cpath, $v) = each %$v) { 306 while (my ($cpath, $v) = each %$v) {
269 next unless $cpath eq substr $upath, 0, length $cpath; 307 next unless $cpath eq substr $upath, 0, length $cpath;
270 308
271 while (my ($k, $v) = each %$v) { 309 while (my ($k, $v) = each %$v) {
272 next if $scheme ne "https" && exists $v->{secure}; 310 next if $uscheme ne "https" && exists $v->{secure};
311 my $value = $v->{value};
312 $value =~ s/([\\"])/\\$1/g;
273 push @cookie, "$k=$v->{value}"; 313 push @cookie, "$k=\"$value\"";
274 } 314 }
275 } 315 }
276 } 316 }
277 317
278 $hdr{cookie} = join "; ", @cookie 318 $hdr{cookie} = join "; ", @cookie
279 if @cookie; 319 if @cookie;
280 } 320 }
281 321
282 my ($rhost, $rport, $rpath); # request host, port, path 322 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
283 323
284 if ($proxy) { 324 if ($proxy) {
285 ($rhost, $rport, $scheme) = @$proxy; 325 ($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);
286 $rpath = $url; 326
327 # don't support https requests over https-proxy transport,
328 # can't be done with tls as spec'ed.
329 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
287 } else { 330 } else {
288 ($rhost, $rport, $rpath) = ($uhost, $uport, $upath); 331 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
289 $hdr{host} = $uhost;
290 } 332 }
291 333
334 $hdr{host} = $uhost;
292 $hdr{"content-length"} = length $arg{body}; 335 $hdr{"content-length"} = length $arg{body};
293 336
294 my %state = (connect_guard => 1); 337 my %state = (connect_guard => 1);
295 338
296 _get_slot $uhost, sub { 339 _get_slot $uhost, sub {
… …
298 341
299 return unless $state{connect_guard}; 342 return unless $state{connect_guard};
300 343
301 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 344 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
302 $state{fh} = shift 345 $state{fh} = shift
303 or return $cb->(undef, { Status => 599, Reason => "$!" }); 346 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
347 pop; # free memory, save a tree
304 348
305 delete $state{connect_guard}; # reduce memory usage, save a tree 349 return unless delete $state{connect_guard};
306 350
307 # get handle 351 # get handle
308 $state{handle} = new AnyEvent::Handle 352 $state{handle} = new AnyEvent::Handle
309 fh => $state{fh}, 353 fh => $state{fh},
310 ($scheme eq "https" ? (tls => "connect") : ()); 354 timeout => $timeout;
311 355
312 # limit the number of persistent connections 356 # limit the number of persistent connections
357 # keepalive not yet supported
313 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 358 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
314 ++$KA_COUNT{$_[1]}; 359 ++$KA_COUNT{$_[1]};
315 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 360 $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
361 --$KA_COUNT{$_[1]}
362 };
316 $hdr{connection} = "keep-alive"; 363 $hdr{connection} = "keep-alive";
317 delete $hdr{connection}; # keep-alive not yet supported
318 } else { 364 } else {
319 delete $hdr{connection}; 365 delete $hdr{connection};
320 } 366 }
321 367
322 # (re-)configure handle 368 # (re-)configure handle
323 $state{handle}->timeout ($timeout);
324 $state{handle}->on_error (sub { 369 $state{handle}->on_error (sub {
370 my $errno = "$!";
325 %state = (); 371 %state = ();
326 $cb->(undef, { Status => 599, Reason => "$!" }); 372 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
327 }); 373 });
328 $state{handle}->on_eof (sub { 374 $state{handle}->on_eof (sub {
329 %state = (); 375 %state = ();
330 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); 376 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
331 }); 377 });
332 378
379 $state{handle}->starttls ("connect") if $rscheme eq "https";
380
381 # handle actual, non-tunneled, request
382 my $handle_actual_request = sub {
383 $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls};
384
333 # send request 385 # send request
334 $state{handle}->push_write ( 386 $state{handle}->push_write (
335 "$method $rpath HTTP/1.0\015\012" 387 "$method $rpath HTTP/1.0\015\012"
336 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) 388 . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
337 . "\015\012" 389 . "\015\012"
338 . (delete $arg{body}) 390 . (delete $arg{body})
339 );
340
341 %hdr = (); # reduce memory usage, save a kitten
342
343 # status line
344 $state{handle}->push_read (line => qr/\015?\012/, sub {
345 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
346 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
347
348 my %hdr = ( # response headers
349 HTTPVersion => "\x00$1",
350 Status => "\x00$2",
351 Reason => "\x00$3",
352 ); 391 );
353 392
393 %hdr = (); # reduce memory usage, save a kitten
394
395 # status line
396 $state{handle}->push_read (line => $qr_nl, sub {
397 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
398 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
399
400 my %hdr = ( # response headers
401 HTTPVersion => ",$1",
402 Status => ",$2",
403 Reason => ",$3",
404 URL => ",$url"
405 );
406
354 # headers, could be optimized a bit 407 # headers, could be optimized a bit
355 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 408 $state{handle}->unshift_read (line => $qr_nlnl, sub {
356 for ("$_[1]\012") { 409 for ("$_[1]\012") {
410 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411
357 # we support spaces in field names, as lotus domino 412 # we support spaces in field names, as lotus domino
358 # creates them. 413 # creates them (actually spaces around seperators
414 # are strictly allowed in http, they are a security issue).
359 $hdr{lc $1} .= "\x00$2" 415 $hdr{lc $1} .= ",$2"
360 while /\G 416 while /\G
361 ([^:\000-\037]+): 417 ([^:\000-\037]+):
362 [\011\040]* 418 [\011\040]*
363 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 419 ((?: [^\012]+ | \012[\011\040] )*)
364 \015?\012 420 \012
365 /gxc; 421 /gxc;
366 422
367 /\G$/ 423 /\G$/
368 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" })); 424 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
369 } 425 }
370 426
371 substr $_, 0, 1, "" 427 substr $_, 0, 1, ""
372 for values %hdr; 428 for values %hdr;
373 429
374 my $finish = sub { 430 my $finish = sub {
431 $state{handle}->destroy;
375 %state = (); 432 %state = ();
376 433
377 # set-cookie processing 434 # set-cookie processing
378 if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) { 435 if ($arg{cookie_jar}) {
379 for (split /\x00/, $hdr{"set-cookie"}) { 436 for ($hdr{"set-cookie"}) {
380 my ($cookie, @arg) = split /;\s*/; 437 # parse NAME=VALUE
381 my ($name, $value) = split /=/, $cookie, 2; 438 my @kv;
382 my %kv = (value => $value, map { split /=/, $_, 2 } @arg); 439
383 440 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
384 my $cdom = (delete $kv{domain}) || $uhost; 441 my $name = $1;
442 my $value = $3;
443
444 unless ($value) {
445 $value = $2;
446 $value =~ s/\\(.)/$1/gs;
447 }
448
449 push @kv, $name => $value;
450
451 last unless /\G\s*;/gc;
452 }
453
454 last unless @kv;
455
456 my $name = shift @kv;
457 my %kv = (value => shift @kv, @kv);
458
459 my $cdom;
385 my $cpath = (delete $kv{path}) || "/"; 460 my $cpath = (delete $kv{path}) || "/";
386 461
462 if (exists $kv{domain}) {
463 $cdom = delete $kv{domain};
464
387 $cdom =~ s/^.?/./; # make sure it starts with a "." 465 $cdom =~ s/^\.?/./; # make sure it starts with a "."
388 466
389 next if $cdom =~ /\.$/; 467 next if $cdom =~ /\.$/;
390 468
391 # this is not rfc-like and not netscape-like. go figure. 469 # this is not rfc-like and not netscape-like. go figure.
392 my $ndots = $cdom =~ y/.//; 470 my $ndots = $cdom =~ y/.//;
393 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); 471 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
394 472 } else {
473 $cdom = $uhost;
474 }
475
395 # store it 476 # store it
396 $arg{cookie_jar}{version} = 1; 477 $arg{cookie_jar}{version} = 1;
397 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv; 478 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
479
480 redo if /\G\s*,/gc;
481 }
482 }
483
484 # microsoft and other shitheads don't give a shit for following standards,
485 # try to support some common forms of broken Location headers.
486 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
487 $_[1]{location} =~ s/^\.\/+//;
488
489 my $url = "$rscheme://$uhost:$uport";
490
491 unless ($_[1]{location} =~ s/^\///) {
492 $url .= $upath;
493 $url =~ s/\/[^\/]*$//;
494 }
495
496 $_[1]{location} = "$url/$_[1]{location}";
497 }
498
499 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
500 # apparently, mozilla et al. just change POST to GET here
501 # more research is needed before we do the same
502 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
503 } elsif ($_[1]{Status} == 303 && $recurse) {
504 # even http/1.1 is unclear on how to mutate the method
505 $method = "GET" unless $method eq "HEAD";
506 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
507 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) {
508 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
509 } else {
510 $cb->($_[0], $_[1]);
511 }
512 };
513
514 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
515 $finish->(undef, \%hdr);
516 } else {
517 if (exists $hdr{"content-length"}) {
518 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
519 # could cache persistent connection now
520 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
521 # but we don't, due to misdesigns, this is annoyingly complex
522 };
523
524 $finish->($_[1], \%hdr);
525 });
526 } else {
527 # too bad, need to read until we get an error or EOF,
528 # no way to detect winged data.
529 $_[0]->on_error (sub {
530 # delete ought to be more efficient, as we would have to make
531 # a copy otherwise as $_[0] gets destroyed.
532 $finish->(delete $_[0]{rbuf}, \%hdr);
533 });
534 $_[0]->on_eof (undef);
535 $_[0]->on_read (sub { });
398 } 536 }
399 } 537 }
400
401 if ($_[1]{Status} =~ /^x30[12]$/ && $recurse) {
402 # microsoft and other assholes don't give a shit for following standards,
403 # try to support a common form of broken Location header.
404 $_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
405
406 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
407 } else {
408 $cb->($_[0], $_[1]);
409 }
410 }; 538 });
539 });
540 };
411 541
412 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { 542 # now handle proxy-CONNECT method
413 $finish->(undef, \%hdr); 543 if ($proxy && $uscheme eq "https") {
544 # oh dear, we have to wrap it into a connect request
545
546 # maybe re-use $uauthority with patched port?
547 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
548 $state{handle}->push_read (line => $qr_nlnl, sub {
549 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
550 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));
551
552 if ($2 == 200) {
553 $rpath = $upath;
554 &$handle_actual_request;
414 } else { 555 } else {
415 if (exists $hdr{"content-length"}) { 556 %state = ();
416 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { 557 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
417 # could cache persistent connection now
418 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
419 # but we don't, due to misdesigns, this is annoyingly complex
420 };
421
422 $finish->($_[1], \%hdr);
423 });
424 } else {
425 # too bad, need to read until we get an error or EOF,
426 # no way to detect winged data.
427 $_[0]->on_error (sub {
428 $finish->($_[0]{rbuf}, \%hdr);
429 });
430 $_[0]->on_eof (undef);
431 $_[0]->on_read (sub { });
432 }
433 } 558 }
434 }); 559 });
560 } else {
561 &$handle_actual_request;
435 }); 562 }
563
436 }, sub { 564 }, sub {
437 $timeout 565 $timeout
438 }; 566 };
439 }; 567 };
440 568
441 defined wantarray && AnyEvent::Util::guard { %state = () } 569 defined wantarray && AnyEvent::Util::guard { %state = () }
442} 570}
443 571
444sub http_get($$;@) { 572sub http_get($@) {
445 unshift @_, "GET"; 573 unshift @_, "GET";
446 &http_request 574 &http_request
447} 575}
448 576
449sub http_head($$;@) { 577sub http_head($@) {
450 unshift @_, "HEAD"; 578 unshift @_, "HEAD";
451 &http_request 579 &http_request
452} 580}
453 581
454sub http_post($$$;@) { 582sub http_post($$@) {
583 my $url = shift;
455 unshift @_, "POST", "body"; 584 unshift @_, "POST", $url, "body";
456 &http_request 585 &http_request
457} 586}
458 587
459=back 588=back
460 589
… …
485=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT 614=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
486 615
487The maximum time to cache a persistent connection, in seconds (default: 2). 616The maximum time to cache a persistent connection, in seconds (default: 2).
488 617
489Not implemented currently. 618Not implemented currently.
619
620=item $AnyEvent::HTTP::ACTIVE
621
622The number of active connections. This is not the number of currently
623running requests, but the number of currently open and non-idle TCP
624connections. This number of can be useful for load-leveling.
490 625
491=back 626=back
492 627
493=cut 628=cut
494 629
… …
503 638
504L<AnyEvent>. 639L<AnyEvent>.
505 640
506=head1 AUTHOR 641=head1 AUTHOR
507 642
508 Marc Lehmann <schmorp@schmorp.de> 643 Marc Lehmann <schmorp@schmorp.de>
509 http://home.schmorp.de/ 644 http://home.schmorp.de/
645
646With many thanks to Дмитрий Шалашов, who provided countless
647testcases and bugreports.
510 648
511=cut 649=cut
512 650
5131 6511
514 652

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