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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.10 by root, Thu Jun 5 13:06:43 2008 UTC vs.
Revision 1.32 by root, Fri Oct 24 01:27:29 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.
17
18This module implements a simple, stateless and non-blocking HTTP
19client. It supports GET, POST and other request methods, cookies and more,
20all on a very low level. It can follow redirects supports proxies and
21automatically limits the number of connections to the values specified in
22the RFC.
23
24It should generally be a "good client" that is enough for most HTTP
25tasks. Simple tasks should be simple, but complex tasks should still be
26possible as the user retains control over request and response headers.
27
28The caller is responsible for authentication management, cookies (if
29the simplistic implementation in this module doesn't suffice), referer
30and other high-level protocol details for which this module offers only
31limited support.
13 32
14=head2 METHODS 33=head2 METHODS
15 34
16=over 4 35=over 4
17 36
… …
29use AnyEvent::Socket (); 48use AnyEvent::Socket ();
30use AnyEvent::Handle (); 49use AnyEvent::Handle ();
31 50
32use base Exporter::; 51use base Exporter::;
33 52
34our $VERSION = '1.0'; 53our $VERSION = '1.05';
35 54
36our @EXPORT = qw(http_get http_request); 55our @EXPORT = qw(http_get http_post http_head http_request);
37 56
38our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; 57our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
39our $MAX_RECURSE = 10; 58our $MAX_RECURSE = 10;
40our $MAX_PERSISTENT = 8; 59our $MAX_PERSISTENT = 8;
41our $PERSISTENT_TIMEOUT = 2; 60our $PERSISTENT_TIMEOUT = 2;
42our $TIMEOUT = 300; 61our $TIMEOUT = 300;
43 62
44# changing these is evil 63# changing these is evil
45our $MAX_PERSISTENT_PER_HOST = 2; 64our $MAX_PERSISTENT_PER_HOST = 2;
46our $MAX_PER_HOST = 4; # not respected yet :( 65our $MAX_PER_HOST = 4;
47 66
48our $PROXY; 67our $PROXY;
68our $ACTIVE = 0;
49 69
50my %KA_COUNT; # number of open keep-alive connections per host 70my %KA_COUNT; # number of open keep-alive connections per host
71my %CO_SLOT; # number of open connections, and wait queue, per host
51 72
52=item http_get $url, key => value..., $cb->($data, $headers) 73=item http_get $url, key => value..., $cb->($data, $headers)
53 74
54Executes 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
55additional parameters. 76additional parameters and the return value.
56 77
57=item http_head $url, key => value..., $cb->($data, $headers) 78=item http_head $url, key => value..., $cb->($data, $headers)
58 79
59Executes an HTTP-HEAD request. See the http_request function for details on 80Executes an HTTP-HEAD request. See the http_request function for details
60additional parameters. 81on additional parameters and the return value.
61 82
62=item http_post $url, $body, key => value..., $cb->($data, $headers) 83=item http_post $url, $body, key => value..., $cb->($data, $headers)
63 84
64Executes an HTTP-POST request with a request body of C<$bod>. See the 85Executes an HTTP-POST request with a request body of C<$body>. See the
65http_request function for details on additional parameters. 86http_request function for details on additional parameters and the return
87value.
66 88
67=item http_request $method => $url, key => value..., $cb->($data, $headers) 89=item http_request $method => $url, key => value..., $cb->($data, $headers)
68 90
69Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL 91Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
70must be an absolute http or https URL. 92must be an absolute http or https URL.
93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
71 98
72The callback will be called with the response data as first argument 99The callback will be called with the response data as first argument
73(or C<undef> if it wasn't available due to errors), and a hash-ref with 100(or C<undef> if it wasn't available due to errors), and a hash-ref with
74response headers as second argument. 101response headers as second argument.
75 102
76All the headers in that hash are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
77headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
78C<Reason> contain the three parts of the HTTP Status-Line of the same 105contain the three parts of the HTTP Status-Line of the same name. The
106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
79name. If the server sends a header multiple lines, then their contents 109If the server sends a header multiple times, then their contents will be
80will be joined together with C<\x00>. 110joined together with a comma (C<,>), as per the HTTP spec.
81 111
82If an internal error occurs, such as not being able to resolve a hostname, 112If an internal error occurs, such as not being able to resolve a hostname,
83then C<$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>
84and the C<Reason> pseudo-header will contain an error message. 114and the C<Reason> pseudo-header will contain an error message.
85 115
… …
105Whether to recurse requests or not, e.g. on redirects, authentication 135Whether to recurse requests or not, e.g. on redirects, authentication
106retries and so on, and how often to do so. 136retries and so on, and how often to do so.
107 137
108=item headers => hashref 138=item headers => hashref
109 139
110The 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:>.
111 143
112=item timeout => $seconds 144=item timeout => $seconds
113 145
114The 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
115the 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.
… …
163 use Data::Dumper; 195 use Data::Dumper;
164 print Dumper $hdr; 196 print Dumper $hdr;
165 } 197 }
166 ; 198 ;
167 199
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 $request;
209
168=cut 210=cut
169 211
212sub _slot_schedule;
213sub _slot_schedule($) {
214 my $host = shift;
215
216 while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) {
217 if (my $cb = shift @{ $CO_SLOT{$host}[1] }) {
218 # somebody wants that slot
219 ++$CO_SLOT{$host}[0];
220 ++$ACTIVE;
221
222 $cb->(AnyEvent::Util::guard {
223 --$ACTIVE;
224 --$CO_SLOT{$host}[0];
225 _slot_schedule $host;
226 });
227 } else {
228 # nobody wants the slot, maybe we can forget about it
229 delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0];
230 last;
231 }
232 }
233}
234
235# wait for a free slot on host, call callback
236sub _get_slot($$) {
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238
239 _slot_schedule $_[0];
240}
241
170sub http_request($$$;@) { 242sub http_request($$@) {
171 my $cb = pop; 243 my $cb = pop;
172 my ($method, $url, %arg) = @_; 244 my ($method, $url, %arg) = @_;
173 245
174 my %hdr; 246 my %hdr;
175 247
… …
179 while (my ($k, $v) = each %$hdr) { 251 while (my ($k, $v) = each %$hdr) {
180 $hdr{lc $k} = $v; 252 $hdr{lc $k} = $v;
181 } 253 }
182 } 254 }
183 255
184 my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; 256 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
185 257
186 return $cb->(undef, { Status => 599, Reason => "recursion limit reached" }) 258 return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })
187 if $recurse < 0; 259 if $recurse < 0;
188 260
189 my $proxy = $arg{proxy} || $PROXY; 261 my $proxy = $arg{proxy} || $PROXY;
190 my $timeout = $arg{timeout} || $TIMEOUT; 262 my $timeout = $arg{timeout} || $TIMEOUT;
191 263
192 $hdr{"user-agent"} ||= $USERAGENT; 264 $hdr{"user-agent"} ||= $USERAGENT;
193 265
194 my ($scheme, $authority, $upath, $query, $fragment) = 266 my ($uscheme, $uauthority, $upath, $query, $fragment) =
195 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; 267 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
196 268
197 $scheme = lc $scheme; 269 $uscheme = lc $uscheme;
198 270
199 my $uport = $scheme eq "http" ? 80 271 my $uport = $uscheme eq "http" ? 80
200 : $scheme eq "https" ? 443 272 : $uscheme eq "https" ? 443
201 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" }); 273 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
202 274
275 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
276
203 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 277 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
204 or return $cb->(undef, { Status => 599, Reason => "unparsable URL" }); 278 or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });
205 279
206 my $uhost = $1; 280 my $uhost = $1;
207 $uport = $2 if defined $2; 281 $uport = $2 if defined $2;
208 282
209 $uhost =~ s/^\[(.*)\]$/$1/; 283 $uhost =~ s/^\[(.*)\]$/$1/;
… …
211 285
212 $upath =~ s%^/?%/%; 286 $upath =~ s%^/?%/%;
213 287
214 # cookie processing 288 # cookie processing
215 if (my $jar = $arg{cookie_jar}) { 289 if (my $jar = $arg{cookie_jar}) {
216 %$jar = () if $jar->{version} < 1; 290 %$jar = () if $jar->{version} != 1;
217 291
218 my @cookie; 292 my @cookie;
219 293
220 while (my ($chost, $v) = each %$jar) { 294 while (my ($chost, $v) = each %$jar) {
295 if ($chost =~ /^\./) {
221 next unless $chost eq substr $uhost, -length $chost; 296 next unless $chost eq substr $uhost, -length $chost;
222 next unless $chost =~ /^\./; 297 } elsif ($chost =~ /\./) {
298 next unless $chost eq $uhost;
299 } else {
300 next;
301 }
223 302
224 while (my ($cpath, $v) = each %$v) { 303 while (my ($cpath, $v) = each %$v) {
225 next unless $cpath eq substr $upath, 0, length $cpath; 304 next unless $cpath eq substr $upath, 0, length $cpath;
226 305
227 while (my ($k, $v) = each %$v) { 306 while (my ($k, $v) = each %$v) {
228 next if $scheme ne "https" && exists $v->{secure}; 307 next if $uscheme ne "https" && exists $v->{secure};
308 my $value = $v->{value};
309 $value =~ s/([\\"])/\\$1/g;
229 push @cookie, "$k=$v->{value}"; 310 push @cookie, "$k=\"$value\"";
230 } 311 }
231 } 312 }
232 } 313 }
233 314
234 $hdr{cookie} = join "; ", @cookie 315 $hdr{cookie} = join "; ", @cookie
235 if @cookie; 316 if @cookie;
236 } 317 }
237 318
238 my ($rhost, $rport, $rpath); # request host, port, path 319 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
239 320
240 if ($proxy) { 321 if ($proxy) {
241 ($rhost, $rport, $scheme) = @$proxy; 322 ($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);
242 $rpath = $url; 323
324 # don't support https requests over https-proxy transport,
325 # can't be done with tls as spec'ed.
326 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
243 } else { 327 } else {
244 ($rhost, $rport, $rpath) = ($uhost, $uport, $upath); 328 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
245 $hdr{host} = $uhost;
246 } 329 }
247 330
331 $hdr{host} = $uhost;
248 $hdr{"content-length"} = length $arg{body}; 332 $hdr{"content-length"} = length $arg{body};
249 333
250 my %state; 334 my %state = (connect_guard => 1);
251 335
336 _get_slot $uhost, sub {
337 $state{slot_guard} = shift;
338
339 return unless $state{connect_guard};
340
252 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { 341 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
253 $state{fh} = shift 342 $state{fh} = shift
254 or return $cb->(undef, { Status => 599, Reason => "$!" }); 343 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
255 344
256 delete $state{connect_guard}; # reduce memory usage, save a tree 345 delete $state{connect_guard}; # reduce memory usage, save a tree
257 346
258 # get handle 347 # get handle
259 $state{handle} = new AnyEvent::Handle 348 $state{handle} = new AnyEvent::Handle
260 fh => $state{fh}, 349 fh => $state{fh};
261 ($scheme eq "https" ? (tls => "connect") : ());
262 350
263 # limit the number of persistent connections 351 # limit the number of persistent connections
264 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 352 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
265 ++$KA_COUNT{$_[1]}; 353 ++$KA_COUNT{$_[1]};
266 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 354 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };
267 $hdr{connection} = "keep-alive"; 355 $hdr{connection} = "keep-alive";
268 delete $hdr{connection}; # keep-alive not yet supported 356 delete $hdr{connection}; # keep-alive not yet supported
269 } else { 357 } else {
270 delete $hdr{connection}; 358 delete $hdr{connection};
271 } 359 }
272 360
273 # (re-)configure handle 361 # (re-)configure handle
274 $state{handle}->timeout ($timeout); 362 $state{handle}->timeout ($timeout);
275 $state{handle}->on_error (sub { 363 $state{handle}->on_error (sub {
364 my $errno = "$!";
276 %state = (); 365 %state = ();
277 $cb->(undef, { Status => 599, Reason => "$!" }); 366 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
278 }); 367 });
279 $state{handle}->on_eof (sub { 368 $state{handle}->on_eof (sub {
280 %state = (); 369 %state = ();
281 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); 370 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
282 });
283
284 # send request
285 $state{handle}->push_write (
286 "$method $rpath HTTP/1.0\015\012"
287 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
288 . "\015\012"
289 . (delete $arg{body})
290 );
291
292 %hdr = (); # reduce memory usage, save a kitten
293
294 # status line
295 $state{handle}->push_read (line => qr/\015?\012/, sub {
296 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
297 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
298
299 my %hdr = ( # response headers
300 HTTPVersion => "\x00$1",
301 Status => "\x00$2",
302 Reason => "\x00$3",
303 ); 371 });
304 372
373 $state{handle}->starttls ("connect") if $rscheme eq "https";
374
375 # handle actual, non-tunneled, request
376 my $handle_actual_request = sub {
377# $state{handle}->starttls ("connect") if $uscheme eq "https";
378
379 # send request
380 $state{handle}->push_write (
381 "$method $rpath HTTP/1.0\015\012"
382 . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
383 . "\015\012"
384 . (delete $arg{body})
385 );
386
387 %hdr = (); # reduce memory usage, save a kitten
388
389 # status line
390 $state{handle}->push_read (line => qr/\015?\012/, sub {
391 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
392 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
393
394 my %hdr = ( # response headers
395 HTTPVersion => ",$1",
396 Status => ",$2",
397 Reason => ",$3",
398 URL => ",$url"
399 );
400
305 # headers, could be optimized a bit 401 # headers, could be optimized a bit
306 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 402 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {
307 for ("$_[1]\012") { 403 for ("$_[1]\012") {
404 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
405
308 # we support spaces in field names, as lotus domino 406 # we support spaces in field names, as lotus domino
309 # creates them. 407 # creates them (actually spaces around seperators
408 # are strictly allowed in http, they are a security issue).
310 $hdr{lc $1} .= "\x00$2" 409 $hdr{lc $1} .= ",$2"
311 while /\G 410 while /\G
312 ([^:\000-\037]+): 411 ([^:\000-\037]+):
313 [\011\040]* 412 [\011\040]*
314 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 413 ((?: [^\012]+ | \012[\011\040] )*)
315 \015?\012 414 \012
316 /gxc; 415 /gxc;
317 416
318 /\G$/ 417 /\G$/
319 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" })); 418 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
320 }
321
322 substr $_, 0, 1, ""
323 for values %hdr;
324
325 my $finish = sub {
326 %state = ();
327
328 # set-cookie processing
329 if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
330 for (split /\x00/, $hdr{"set-cookie"}) {
331 my ($cookie, @arg) = split /;\s*/;
332 my ($name, $value) = split /=/, $cookie, 2;
333 my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
334
335 my $cdom = (delete $kv{domain}) || $uhost;
336 my $cpath = (delete $kv{path}) || "/";
337
338 $cdom =~ s/^.?/./; # make sure it starts with a "."
339
340 my $ndots = $cdom =~ y/.//;
341 next if $ndots < ($cdom =~ /[^.]{3}$/ ? 2 : 3);
342
343 # store it
344 $arg{cookie_jar}{version} = 1;
345 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
346 } 419 }
420
421 substr $_, 0, 1, ""
422 for values %hdr;
423
424 my $finish = sub {
425 # TODO: use destroy method, when/if available
426 #$state{handle}->destroy;
427 $state{handle}->on_eof (undef);
428 $state{handle}->on_error (undef);
429 %state = ();
430
431 # set-cookie processing
432 if ($arg{cookie_jar}) {
433 for ($hdr{"set-cookie"}) {
434 # parse NAME=VALUE
435 my @kv;
436
437 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
438 my $name = $1;
439 my $value = $3;
440
441 unless ($value) {
442 $value = $2;
443 $value =~ s/\\(.)/$1/gs;
444 }
445
446 push @kv, $name => $value;
447
448 last unless /\G\s*;/gc;
449 }
450
451 last unless @kv;
452
453 my $name = shift @kv;
454 my %kv = (value => shift @kv, @kv);
455
456 my $cdom;
457 my $cpath = (delete $kv{path}) || "/";
458
459 if (exists $kv{domain}) {
460 $cdom = delete $kv{domain};
461
462 $cdom =~ s/^\.?/./; # make sure it starts with a "."
463
464 next if $cdom =~ /\.$/;
465
466 # this is not rfc-like and not netscape-like. go figure.
467 my $ndots = $cdom =~ y/.//;
468 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
469 } else {
470 $cdom = $uhost;
471 }
472
473 # store it
474 $arg{cookie_jar}{version} = 1;
475 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
476
477 redo if /\G\s*,/gc;
478 }
479 }
480
481 # microsoft and other shitheads don't give a shit for following standards,
482 # try to support some common forms of broken Location headers.
483 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
484 $_[1]{location} =~ s/^\.\/+//;
485
486 my $url = "$rscheme://$uhost:$uport";
487
488 unless ($_[1]{location} =~ s/^\///) {
489 $url .= $upath;
490 $url =~ s/\/[^\/]*$//;
491 }
492
493 $_[1]{location} = "$url/$_[1]{location}";
494 }
495
496 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
497 # apparently, mozilla et al. just change POST to GET here
498 # more research is needed before we do the same
499 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
500 } elsif ($_[1]{Status} == 303 && $recurse) {
501 # even http/1.1 is unclear on how to mutate the method
502 $method = "GET" unless $method eq "HEAD";
503 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
504 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) {
505 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
506 } else {
507 $cb->($_[0], $_[1]);
508 }
509 };
510
511 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
512 $finish->(undef, \%hdr);
513 } else {
514 if (exists $hdr{"content-length"}) {
515 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
516 # could cache persistent connection now
517 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
518 # but we don't, due to misdesigns, this is annoyingly complex
519 };
520
521 $finish->($_[1], \%hdr);
522 });
523 } else {
524 # too bad, need to read until we get an error or EOF,
525 # no way to detect winged data.
526 $_[0]->on_error (sub {
527 $finish->($_[0]{rbuf}, \%hdr);
528 });
529 $_[0]->on_eof (undef);
530 $_[0]->on_read (sub { });
531 }
532 }
533 });
534 });
535 };
536
537 # now handle proxy-CONNECT method
538 if ($proxy && $uscheme eq "https") {
539 # oh dear, we have to wrap it into a connect request
540
541 # maybe re-use $uauthority with patched port?
542 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
543 $state{handle}->push_read (line => qr/\015?\012\015?\012/, sub {
544 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
545 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));
546
547 if ($2 == 200) {
548 $rpath = $upath;
549 &$handle_actual_request;
550 } else {
551 %state = ();
552 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
347 } 553 }
348
349 if ($_[1]{Status} =~ /^x30[12]$/ && $recurse) {
350 # microsoft and other assholes don't give a shit for following standards,
351 # try to support a common form of broken Location header.
352 $_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%;
353
354 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
355 } else {
356 $cb->($_[0], $_[1]);
357 }
358 }; 554 });
359
360 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
361 $finish->(undef, \%hdr);
362 } else { 555 } else {
363 if (exists $hdr{"content-length"}) { 556 &$handle_actual_request;
364 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
365 # could cache persistent connection now
366 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
367 # but we don't, due to misdesigns, this is annoyingly complex
368 };
369
370 $finish->($_[1], \%hdr);
371 });
372 } else {
373 # too bad, need to read until we get an error or EOF,
374 # no way to detect winged data.
375 $_[0]->on_error (sub {
376 $finish->($_[0]{rbuf}, \%hdr);
377 });
378 $_[0]->on_eof (undef);
379 $_[0]->on_read (sub { });
380 }
381 }
382 }); 557 }
558
559 }, sub {
560 $timeout
383 }); 561 };
384 }, sub {
385 $timeout
386 }; 562 };
387 563
388 defined wantarray && AnyEvent::Util::guard { %state = () } 564 defined wantarray && AnyEvent::Util::guard { %state = () }
389} 565}
390 566
391sub http_get($$;@) { 567sub http_get($@) {
392 unshift @_, "GET"; 568 unshift @_, "GET";
393 &http_request 569 &http_request
394} 570}
395 571
396sub http_head($$;@) { 572sub http_head($@) {
397 unshift @_, "HEAD"; 573 unshift @_, "HEAD";
398 &http_request 574 &http_request
399} 575}
400 576
401sub http_post($$$;@) { 577sub http_post($$@) {
578 my $url = shift;
402 unshift @_, "POST", "body"; 579 unshift @_, "POST", $url, "body";
403 &http_request 580 &http_request
404} 581}
405 582
406=back 583=back
407 584
… …
432=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT 609=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
433 610
434The maximum time to cache a persistent connection, in seconds (default: 2). 611The maximum time to cache a persistent connection, in seconds (default: 2).
435 612
436Not implemented currently. 613Not implemented currently.
614
615=item $AnyEvent::HTTP::ACTIVE
616
617The number of active connections. This is not the number of currently
618running requests, but the number of currently open and non-idle TCP
619connections. This number of can be useful for load-leveling.
437 620
438=back 621=back
439 622
440=cut 623=cut
441 624
… …
450 633
451L<AnyEvent>. 634L<AnyEvent>.
452 635
453=head1 AUTHOR 636=head1 AUTHOR
454 637
455 Marc Lehmann <schmorp@schmorp.de> 638 Marc Lehmann <schmorp@schmorp.de>
456 http://home.schmorp.de/ 639 http://home.schmorp.de/
457 640
458=cut 641=cut
459 642
4601 6431
461 644

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