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Revision 1.7 by root, Wed Jun 4 12:10:27 2008 UTC vs.
Revision 1.29 by root, Wed Oct 22 23:28:11 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<$method> (e.g. C<GET>, C<POST>). The URL
70must be an absolute http or https URL. 92must be an absolute http or https URL.
93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
71 98
72The callback will be called with the response data as first argument 99The callback will be called with the response data as first argument
73(or C<undef> if it wasn't available due to errors), and a hash-ref with 100(or C<undef> if it wasn't available due to errors), and a hash-ref with
74response headers as second argument. 101response headers as second argument.
75 102
76All the headers in that hash are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
77headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
78C<Reason> contain the three parts of the HTTP Status-Line of the same 105contain the three parts of the HTTP Status-Line of the same name. The
79name. 106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
109If the server sends a header multiple lines, then their contents will be
110joined together with C<\x00>.
80 111
81If an internal error occurs, such as not being able to resolve a hostname, 112If an internal error occurs, such as not being able to resolve a hostname,
82then C<$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>
83and the C<Reason> pseudo-header will contain an error message. 114and the C<Reason> pseudo-header will contain an error message.
84 115
… …
104Whether to recurse requests or not, e.g. on redirects, authentication 135Whether to recurse requests or not, e.g. on redirects, authentication
105retries and so on, and how often to do so. 136retries and so on, and how often to do so.
106 137
107=item headers => hashref 138=item headers => hashref
108 139
109The 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:>.
110 143
111=item timeout => $seconds 144=item timeout => $seconds
112 145
113The 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
114the 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.
… …
124=item body => $string 157=item body => $string
125 158
126The request body, usually empty. Will be-sent as-is (future versions of 159The request body, usually empty. Will be-sent as-is (future versions of
127this module might offer more options). 160this module might offer more options).
128 161
162=item cookie_jar => $hash_ref
163
164Passing this parameter enables (simplified) cookie-processing, loosely
165based on the original netscape specification.
166
167The C<$hash_ref> must be an (initially empty) hash reference which will
168get updated automatically. It is possible to save the cookie_jar to
169persistent storage with something like JSON or Storable, but this is not
170recommended, as expire times are currently being ignored.
171
172Note that this cookie implementation is not of very high quality, nor
173meant to be complete. If you want complete cookie management you have to
174do that on your own. C<cookie_jar> is meant as a quick fix to get some
175cookie-using sites working. Cookies are a privacy disaster, do not use
176them unless required to.
177
129=back 178=back
130 179
131=back 180Example: make a simple HTTP GET request for http://www.nethype.de/
181
182 http_request GET => "http://www.nethype.de/", sub {
183 my ($body, $hdr) = @_;
184 print "$body\n";
185 };
186
187Example: make a HTTP HEAD request on https://www.google.com/, use a
188timeout of 30 seconds.
189
190 http_request
191 GET => "https://www.google.com",
192 timeout => 30,
193 sub {
194 my ($body, $hdr) = @_;
195 use Data::Dumper;
196 print Dumper $hdr;
197 }
198 ;
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 $request;
132 209
133=cut 210=cut
134 211
212sub _slot_schedule;
213sub _slot_schedule($) {
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($$) {
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238
239 _slot_schedule $_[0];
240}
241
135sub http_request($$$;@) { 242sub http_request($$@) {
136 my $cb = pop; 243 my $cb = pop;
137 my ($method, $url, %arg) = @_; 244 my ($method, $url, %arg) = @_;
138 245
139 my %hdr; 246 my %hdr;
140 247
141 $method = uc $method; 248 $method = uc $method;
142 249
143 if (my $hdr = delete $arg{headers}) { 250 if (my $hdr = $arg{headers}) {
144 while (my ($k, $v) = each %$hdr) { 251 while (my ($k, $v) = each %$hdr) {
145 $hdr{lc $k} = $v; 252 $hdr{lc $k} = $v;
146 } 253 }
147 } 254 }
148 255
256 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
257
258 return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })
259 if $recurse < 0;
260
149 my $proxy = $arg{proxy} || $PROXY; 261 my $proxy = $arg{proxy} || $PROXY;
150 my $timeout = $arg{timeout} || $TIMEOUT; 262 my $timeout = $arg{timeout} || $TIMEOUT;
151 my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;
152 263
153 $hdr{"user-agent"} ||= $USERAGENT; 264 $hdr{"user-agent"} ||= $USERAGENT;
154 265
155 my ($host, $port, $path, $scheme); 266 my ($scheme, $authority, $upath, $query, $fragment) =
267 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
268
269 $scheme = lc $scheme;
270
271 my $uport = $scheme eq "http" ? 80
272 : $scheme eq "https" ? 443
273 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
274
275 $hdr{referer} ||= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic
276
277 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
278 or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });
279
280 my $uhost = $1;
281 $uport = $2 if defined $2;
282
283 $uhost =~ s/^\[(.*)\]$/$1/;
284 $upath .= "?$query" if length $query;
285
286 $upath =~ s%^/?%/%;
287
288 # cookie processing
289 if (my $jar = $arg{cookie_jar}) {
290 %$jar = () if $jar->{version} < 1;
291
292 my @cookie;
293
294 while (my ($chost, $v) = each %$jar) {
295 next unless $chost eq substr $uhost, -length $chost;
296 next unless $chost =~ /^\./;
297
298 while (my ($cpath, $v) = each %$v) {
299 next unless $cpath eq substr $upath, 0, length $cpath;
300
301 while (my ($k, $v) = each %$v) {
302 next if $scheme ne "https" && exists $v->{secure};
303 push @cookie, "$k=$v->{value}";
304 }
305 }
306 }
307
308 $hdr{cookie} = join "; ", @cookie
309 if @cookie;
310 }
311
312 my ($rhost, $rport, $rpath); # request host, port, path
156 313
157 if ($proxy) { 314 if ($proxy) {
158 ($host, $port, $scheme) = @$proxy; 315 ($rhost, $rport, $scheme) = @$proxy;
159 $path = $url; 316 $rpath = $url;
160 } else { 317 } else {
161 ($scheme, my $authority, $path, my $query, my $fragment) = 318 ($rhost, $rport, $rpath) = ($uhost, $uport, $upath);
162 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
163
164 $port = $scheme eq "http" ? 80
165 : $scheme eq "https" ? 443
166 : croak "$url: only http and https URLs supported";
167
168 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
169 or croak "$authority: unparsable URL";
170
171 $host = $1;
172 $port = $2 if defined $2;
173
174 $host =~ s/^\[(.*)\]$/$1/;
175 $path .= "?$query" if length $query;
176
177 $path = "/" unless $path;
178
179 $hdr{host} = $host = lc $host; 319 $hdr{host} = $uhost;
180 } 320 }
181 321
182 $scheme = lc $scheme;
183
184 my %state;
185
186 $state{body} = delete $arg{body};
187
188 $hdr{"content-length"} = length $state{body}; 322 $hdr{"content-length"} = length $arg{body};
189 323
324 my %state = (connect_guard => 1);
325
326 _get_slot $uhost, sub {
327 $state{slot_guard} = shift;
328
329 return unless $state{connect_guard};
330
190 $state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub { 331 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
191 $state{fh} = shift 332 $state{fh} = shift
192 or return $cb->(undef, { Status => 599, Reason => "$!" }); 333 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
193 334
194 delete $state{connect_guard}; # reduce memory usage, save a tree 335 delete $state{connect_guard}; # reduce memory usage, save a tree
195 336
196 # get handle 337 # get handle
197 $state{handle} = new AnyEvent::Handle 338 $state{handle} = new AnyEvent::Handle
198 fh => $state{fh}, 339 fh => $state{fh},
199 ($scheme eq "https" ? (tls => "connect") : ()); 340 ($scheme eq "https" ? (tls => "connect") : ());
200 341
201 # limit the number of persistent connections 342 # limit the number of persistent connections
202 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 343 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
203 ++$KA_COUNT{$_[1]}; 344 ++$KA_COUNT{$_[1]};
204 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 345 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };
205 $hdr{connection} = "keep-alive"; 346 $hdr{connection} = "keep-alive";
206 delete $hdr{connection}; # keep-alive not yet supported 347 delete $hdr{connection}; # keep-alive not yet supported
207 } else { 348 } else {
208 delete $hdr{connection}; 349 delete $hdr{connection};
209 } 350 }
210 351
211 # (re-)configure handle 352 # (re-)configure handle
212 $state{handle}->timeout ($timeout); 353 $state{handle}->timeout ($timeout);
213 $state{handle}->on_error (sub { 354 $state{handle}->on_error (sub {
355 my $errno = "$!";
214 %state = (); 356 %state = ();
215 $cb->(undef, { Status => 599, Reason => "$!" }); 357 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
216 }); 358 });
217 $state{handle}->on_eof (sub { 359 $state{handle}->on_eof (sub {
218 %state = (); 360 %state = ();
219 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); 361 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
220 }); 362 });
221 363
222 # send request 364 # send request
223 $state{handle}->push_write ( 365 $state{handle}->push_write (
224 "$method $path HTTP/1.0\015\012" 366 "$method $rpath HTTP/1.0\015\012"
225 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) 367 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
226 . "\015\012" 368 . "\015\012"
227 . (delete $state{body}) 369 . (delete $arg{body})
228 );
229
230 %hdr = (); # reduce memory usage, save a kitten
231
232 # status line
233 $state{handle}->push_read (line => qr/\015?\012/, sub {
234 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
235 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
236
237 my %hdr = ( # response headers
238 HTTPVersion => ",$1",
239 Status => ",$2",
240 Reason => ",$3",
241 ); 370 );
242 371
372 %hdr = (); # reduce memory usage, save a kitten
373
374 # status line
375 $state{handle}->push_read (line => qr/\015?\012/, sub {
376 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
377 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])", URL => $url }));
378
379 my %hdr = ( # response headers
380 HTTPVersion => "\x00$1",
381 Status => "\x00$2",
382 Reason => "\x00$3",
383 URL => "\x00$url"
384 );
385
243 # headers, could be optimized a bit 386 # headers, could be optimized a bit
244 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 387 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {
245 for ("$_[1]\012") { 388 for ("$_[1]\012") {
246 # we support spaces in field names, as lotus domino 389 # we support spaces in field names, as lotus domino
247 # creates them. 390 # creates them.
248 $hdr{lc $1} .= ",$2" 391 $hdr{lc $1} .= "\x00$2"
249 while /\G 392 while /\G
250 ([^:\000-\037]+): 393 ([^:\000-\037]+):
251 [\011\040]* 394 [\011\040]*
252 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 395 ((?: [^\015\012]+ | \015?\012[\011\040] )*)
253 \015?\012 396 \015?\012
254 /gxc; 397 /gxc;
255 398
256 /\G$/ 399 /\G$/
257 or return $cb->(undef, { Status => 599, Reason => "garbled response headers" }); 400 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
258 } 401 }
259 402
260 substr $_, 0, 1, "" 403 substr $_, 0, 1, ""
261 for values %hdr; 404 for values %hdr;
262 405
263 if ($method eq "HEAD") { 406 my $finish = sub {
264 %state = (); 407 %state = ();
265 $cb->(undef, \%hdr); 408
266 } else { 409 # set-cookie processing
267 if (exists $hdr{"content-length"}) { 410 if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) {
268 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { 411 for (split /\x00/, $hdr{"set-cookie"}) {
269 # could cache persistent connection now 412 my ($cookie, @arg) = split /;\s*/;
270 if ($hdr{connection} =~ /\bkeep-alive\b/i) { 413 my ($name, $value) = split /=/, $cookie, 2;
271 # but we don't, due to misdesigns, this is annoyingly complex 414 my %kv = (value => $value, map { split /=/, $_, 2 } @arg);
415
416 my $cdom = (delete $kv{domain}) || $uhost;
417 my $cpath = (delete $kv{path}) || "/";
418
419 $cdom =~ s/^\.?/./; # make sure it starts with a "."
420
421 next if $cdom =~ /\.$/;
422
423 # this is not rfc-like and not netscape-like. go figure.
424 my $ndots = $cdom =~ y/.//;
425 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
426
427 # store it
428 $arg{cookie_jar}{version} = 1;
429 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
272 }; 430 }
273
274 %state = ();
275 $cb->($_[1], \%hdr);
276 }); 431 }
432
433 # microsoft and other shitheads don't give a shit for following standards,
434 # try to support some common forms of broken Location headers.
435 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
436 $_[1]{location} =~ s/^\.\/+//;
437
438 my $url = "$scheme://$uhost:$uport";
439
440 unless ($_[1]{location} =~ s/^\///) {
441 $url .= $upath;
442 $url =~ s/\/[^\/]*$//;
443 }
444
445 $_[1]{location} = "$url/$_[1]{location}";
446 }
447
448 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
449 # apparently, mozilla et al. just change POST to GET here
450 # more research is needed before we do the same
451 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
452 } elsif ($_[1]{Status} == 303 && $recurse) {
453 # even http/1.1 is unlear on how to mutate the method
454 $method = "GET" unless $method eq "HEAD";
455 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
456 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) {
457 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
458 } else {
459 $cb->($_[0], $_[1]);
460 }
461 };
462
463 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
464 $finish->(undef, \%hdr);
277 } else { 465 } else {
466 if (exists $hdr{"content-length"}) {
467 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
468 # could cache persistent connection now
469 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
470 # but we don't, due to misdesigns, this is annoyingly complex
471 };
472
473 $finish->($_[1], \%hdr);
474 });
475 } else {
278 # too bad, need to read until we get an error or EOF, 476 # too bad, need to read until we get an error or EOF,
279 # no way to detect winged data. 477 # no way to detect winged data.
280 $_[0]->on_error (sub { 478 $_[0]->on_error (sub {
281 %state = ();
282 $cb->($_[0]{rbuf}, \%hdr); 479 $finish->($_[0]{rbuf}, \%hdr);
283 }); 480 });
284 $_[0]->on_eof (undef); 481 $_[0]->on_eof (undef);
285 $_[0]->on_read (sub { }); 482 $_[0]->on_read (sub { });
483 }
286 } 484 }
287 } 485 });
288 }); 486 });
487 }, sub {
488 $timeout
289 }); 489 };
290 }, sub {
291 $timeout
292 }; 490 };
293 491
294 defined wantarray && AnyEvent::Util::guard { %state = () } 492 defined wantarray && AnyEvent::Util::guard { %state = () }
295} 493}
296 494
297sub http_get($$;@) { 495sub http_get($@) {
298 unshift @_, "GET"; 496 unshift @_, "GET";
299 &http_request 497 &http_request
300} 498}
301 499
302sub http_head($$;@) { 500sub http_head($@) {
303 unshift @_, "HEAD"; 501 unshift @_, "HEAD";
304 &http_request 502 &http_request
305} 503}
306 504
307sub http_post($$$;@) { 505sub http_post($$@) {
506 my $url = shift;
308 unshift @_, "POST", "body"; 507 unshift @_, "POST", $url, "body";
309 &http_request 508 &http_request
310} 509}
510
511=back
311 512
312=head2 GLOBAL FUNCTIONS AND VARIABLES 513=head2 GLOBAL FUNCTIONS AND VARIABLES
313 514
314=over 4 515=over 4
315 516
… …
337 538
338The maximum time to cache a persistent connection, in seconds (default: 2). 539The maximum time to cache a persistent connection, in seconds (default: 2).
339 540
340Not implemented currently. 541Not implemented currently.
341 542
543=item $AnyEvent::HTTP::ACTIVE
544
545The number of active connections. This is not the number of currently
546running requests, but the number of currently open and non-idle TCP
547connections. This number of can be useful for load-leveling.
548
342=back 549=back
343 550
344=cut 551=cut
345 552
346sub set_proxy($) { 553sub set_proxy($) {
… …
354 561
355L<AnyEvent>. 562L<AnyEvent>.
356 563
357=head1 AUTHOR 564=head1 AUTHOR
358 565
359 Marc Lehmann <schmorp@schmorp.de> 566 Marc Lehmann <schmorp@schmorp.de>
360 http://home.schmorp.de/ 567 http://home.schmorp.de/
361 568
362=cut 569=cut
363 570
3641 5711
365 572

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