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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.6 by root, Wed Jun 4 12:05:45 2008 UTC vs.
Revision 1.34 by root, Wed Oct 29 14:51:07 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, $headers)
63 84
64Executes an HTTP-POST request with a requets body of C<$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<$method> (e.g. C<GET>, C<POST>). The URL
70must be an absolute http or https URL. 92must be an absolute http or https URL.
93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
71 98
72The callback will be called with the response data as first argument 99The callback will be called with the response data as first argument
73(or C<undef> if it wasn't available due to errors), and a hash-ref with 100(or C<undef> if it wasn't available due to errors), and a hash-ref with
74response headers as second argument. 101response headers as second argument.
75 102
76All the headers in that has are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
77headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
78C<Reason> contain the three parts of the HTTP Status-Line of the same 105contain the three parts of the HTTP Status-Line of the same name. The
79name. 106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
109If the server sends a header multiple times, then their contents will be
110joined together with a comma (C<,>), as per the HTTP spec.
80 111
81If an internal error occurs, such as not being able to resolve a hostname, 112If an internal error occurs, such as not being able to resolve a hostname,
82then C<$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($$) {
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238
239 _slot_schedule $_[0];
240}
241
242our $qr_nl = qr<\015?\012>;
243our $qr_nlnl = qr<\015?\012\015?\012>;
244
135sub http_request($$$;@) { 245sub http_request($$@) {
136 my $cb = pop; 246 my $cb = pop;
137 my ($method, $url, %arg) = @_; 247 my ($method, $url, %arg) = @_;
138 248
139 my %hdr; 249 my %hdr;
140 250
141 $method = uc $method; 251 $method = uc $method;
142 252
143 if (my $hdr = delete $arg{headers}) { 253 if (my $hdr = $arg{headers}) {
144 while (my ($k, $v) = each %$hdr) { 254 while (my ($k, $v) = each %$hdr) {
145 $hdr{lc $k} = $v; 255 $hdr{lc $k} = $v;
146 } 256 }
147 } 257 }
148 258
259 my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE;
260
261 return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url })
262 if $recurse < 0;
263
149 my $proxy = $arg{proxy} || $PROXY; 264 my $proxy = $arg{proxy} || $PROXY;
150 my $timeout = $arg{timeout} || $TIMEOUT; 265 my $timeout = $arg{timeout} || $TIMEOUT;
151 my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;
152 266
153 $hdr{"user-agent"} ||= $USERAGENT; 267 $hdr{"user-agent"} ||= $USERAGENT;
154 268
155 my ($host, $port, $path, $scheme); 269 my ($uscheme, $uauthority, $upath, $query, $fragment) =
270 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
271
272 $uscheme = lc $uscheme;
273
274 my $uport = $uscheme eq "http" ? 80
275 : $uscheme eq "https" ? 443
276 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
277
278 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
279
280 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
281 or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });
282
283 my $uhost = $1;
284 $uport = $2 if defined $2;
285
286 $uhost =~ s/^\[(.*)\]$/$1/;
287 $upath .= "?$query" if length $query;
288
289 $upath =~ s%^/?%/%;
290
291 # cookie processing
292 if (my $jar = $arg{cookie_jar}) {
293 %$jar = () if $jar->{version} != 1;
294
295 my @cookie;
296
297 while (my ($chost, $v) = each %$jar) {
298 if ($chost =~ /^\./) {
299 next unless $chost eq substr $uhost, -length $chost;
300 } elsif ($chost =~ /\./) {
301 next unless $chost eq $uhost;
302 } else {
303 next;
304 }
305
306 while (my ($cpath, $v) = each %$v) {
307 next unless $cpath eq substr $upath, 0, length $cpath;
308
309 while (my ($k, $v) = each %$v) {
310 next if $uscheme ne "https" && exists $v->{secure};
311 my $value = $v->{value};
312 $value =~ s/([\\"])/\\$1/g;
313 push @cookie, "$k=\"$value\"";
314 }
315 }
316 }
317
318 $hdr{cookie} = join "; ", @cookie
319 if @cookie;
320 }
321
322 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
156 323
157 if ($proxy) { 324 if ($proxy) {
158 ($host, $port, $scheme) = @$proxy; 325 ($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);
159 $path = $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" && $rscheme eq "https";
160 } else { 330 } else {
161 ($scheme, my $authority, $path, my $query, my $fragment) = 331 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $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;
180 } 332 }
181 333
182 $scheme = lc $scheme; 334 $hdr{host} = $uhost;
183
184 my %state;
185
186 $state{body} = delete $arg{body};
187
188 $hdr{"content-length"} = length $state{body}; 335 $hdr{"content-length"} = length $arg{body};
189 336
337 my %state = (connect_guard => 1);
338
339 _get_slot $uhost, sub {
340 $state{slot_guard} = shift;
341
342 return unless $state{connect_guard};
343
190 $state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub { 344 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
191 $state{fh} = shift 345 $state{fh} = shift
192 or return $cb->(undef, { Status => 599, Reason => "$!" }); 346 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
347 pop; # free memory, save a tree
193 348
194 delete $state{connect_guard}; # reduce memory usage, save a tree 349 return unless delete $state{connect_guard};
195 350
196 # get handle 351 # get handle
197 $state{handle} = new AnyEvent::Handle 352 $state{handle} = new AnyEvent::Handle
198 fh => $state{fh}, 353 fh => $state{fh},
199 ($scheme eq "https" ? (tls => "connect") : ()); 354 timeout => $timeout;
200 355
201 # limit the number of persistent connections 356 # limit the number of persistent connections
357 # keepalive not yet supported
202 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 358 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
203 ++$KA_COUNT{$_[1]}; 359 ++$KA_COUNT{$_[1]};
204 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 360 $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
361 --$KA_COUNT{$_[1]}
362 };
205 $hdr{connection} = "keep-alive"; 363 $hdr{connection} = "keep-alive";
206 delete $hdr{connection}; # keep-alive not yet supported
207 } else { 364 } else {
208 delete $hdr{connection}; 365 delete $hdr{connection};
209 } 366 }
210 367
211 # (re-)configure handle 368 # (re-)configure handle
212 $state{handle}->timeout ($timeout);
213 $state{handle}->on_error (sub { 369 $state{handle}->on_error (sub {
370 my $errno = "$!";
214 %state = (); 371 %state = ();
215 $cb->(undef, { Status => 599, Reason => "$!" }); 372 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
216 }); 373 });
217 $state{handle}->on_eof (sub { 374 $state{handle}->on_eof (sub {
218 %state = (); 375 %state = ();
219 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); 376 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
220 });
221
222 # send request
223 $state{handle}->push_write (
224 "$method $path HTTP/1.0\015\012"
225 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
226 . "\015\012"
227 . (delete $state{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 ); 377 });
242 378
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
385 # send request
386 $state{handle}->push_write (
387 "$method $rpath HTTP/1.0\015\012"
388 . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr)
389 . "\015\012"
390 . (delete $arg{body})
391 );
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
243 # headers, could be optimized a bit 407 # headers, could be optimized a bit
244 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 408 $state{handle}->unshift_read (line => $qr_nlnl, sub {
245 for ("$_[1]\012") { 409 for ("$_[1]\012") {
410 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411
246 # we support spaces in field names, as lotus domino 412 # we support spaces in field names, as lotus domino
247 # creates them. 413 # creates them (actually spaces around seperators
414 # are strictly allowed in http, they are a security issue).
248 $hdr{lc $1} .= ",$2" 415 $hdr{lc $1} .= ",$2"
249 while /\G 416 while /\G
250 ([^:\000-\037]+): 417 ([^:\000-\037]+):
251 [\011\040]* 418 [\011\040]*
252 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 419 ((?: [^\012]+ | \012[\011\040] )*)
253 \015?\012 420 \012
254 /gxc; 421 /gxc;
255 422
256 /\G$/ 423 /\G$/
257 or return $cb->(undef, { Status => 599, Reason => "garbled response headers" }); 424 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
258 } 425 }
259 426
260 substr $_, 0, 1, "" 427 substr $_, 0, 1, ""
261 for values %hdr; 428 for values %hdr;
262 429
263 if ($method eq "HEAD") { 430 my $finish = sub {
264 %state = (); 431 # TODO: use destroy method, when/if available
265 $cb->(undef, \%hdr); 432 #$state{handle}->destroy;
266 } else { 433 $state{handle}->on_eof (undef);
267 if (exists $hdr{"content-length"}) { 434 $state{handle}->on_error (undef);
268 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
269 # could cache persistent connection now
270 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
271 # but we don't, due to misdesigns, this is annoyingly complex
272 };
273
274 %state = (); 435 %state = ();
436
437 # set-cookie processing
438 if ($arg{cookie_jar}) {
439 for ($hdr{"set-cookie"}) {
440 # parse NAME=VALUE
441 my @kv;
442
443 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
444 my $name = $1;
445 my $value = $3;
446
447 unless ($value) {
448 $value = $2;
449 $value =~ s/\\(.)/$1/gs;
450 }
451
452 push @kv, $name => $value;
453
454 last unless /\G\s*;/gc;
455 }
456
457 last unless @kv;
458
459 my $name = shift @kv;
460 my %kv = (value => shift @kv, @kv);
461
462 my $cdom;
463 my $cpath = (delete $kv{path}) || "/";
464
465 if (exists $kv{domain}) {
466 $cdom = delete $kv{domain};
467
468 $cdom =~ s/^\.?/./; # make sure it starts with a "."
469
470 next if $cdom =~ /\.$/;
471
472 # this is not rfc-like and not netscape-like. go figure.
473 my $ndots = $cdom =~ y/.//;
474 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
475 } else {
476 $cdom = $uhost;
477 }
478
479 # store it
480 $arg{cookie_jar}{version} = 1;
481 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
482
483 redo if /\G\s*,/gc;
484 }
485 }
486
487 # microsoft and other shitheads don't give a shit for following standards,
488 # try to support some common forms of broken Location headers.
489 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
490 $_[1]{location} =~ s/^\.\/+//;
491
492 my $url = "$rscheme://$uhost:$uport";
493
494 unless ($_[1]{location} =~ s/^\///) {
495 $url .= $upath;
496 $url =~ s/\/[^\/]*$//;
497 }
498
499 $_[1]{location} = "$url/$_[1]{location}";
500 }
501
502 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
503 # apparently, mozilla et al. just change POST to GET here
504 # more research is needed before we do the same
505 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
506 } elsif ($_[1]{Status} == 303 && $recurse) {
507 # even http/1.1 is unclear on how to mutate the method
508 $method = "GET" unless $method eq "HEAD";
509 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
510 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) {
511 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
512 } else {
275 $cb->($_[1], \%hdr); 513 $cb->($_[0], $_[1]);
514 }
276 }); 515 };
516
517 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
518 $finish->(undef, \%hdr);
519 } else {
520 if (exists $hdr{"content-length"}) {
521 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
522 # could cache persistent connection now
523 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
524 # but we don't, due to misdesigns, this is annoyingly complex
525 };
526
527 $finish->($_[1], \%hdr);
528 });
529 } else {
530 # too bad, need to read until we get an error or EOF,
531 # no way to detect winged data.
532 $_[0]->on_error (sub {
533 $finish->($_[0]{rbuf}, \%hdr);
534 });
535 $_[0]->on_eof (undef);
536 $_[0]->on_read (sub { });
537 }
538 }
539 });
540 });
541 };
542
543 # now handle proxy-CONNECT method
544 if ($proxy && $uscheme eq "https") {
545 # oh dear, we have to wrap it into a connect request
546
547 # maybe re-use $uauthority with patched port?
548 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
549 $state{handle}->push_read (line => $qr_nlnl, sub {
550 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
551 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));
552
553 if ($2 == 200) {
554 $rpath = $upath;
555 &$handle_actual_request;
277 } else { 556 } else {
278 # too bad, need to read until we get an error or EOF,
279 # no way to detect winged data.
280 $_[0]->on_error (sub {
281 %state = (); 557 %state = ();
282 $cb->($_[0]{rbuf}, \%hdr); 558 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
283 });
284 $_[0]->on_eof (undef);
285 $_[0]->on_read (sub { });
286 } 559 }
287 } 560 });
561 } else {
562 &$handle_actual_request;
288 }); 563 }
564
565 }, sub {
566 $timeout
289 }); 567 };
290 }, sub {
291 $timeout
292 }; 568 };
293 569
294 defined wantarray && AnyEvent::Util::guard { %state = () } 570 defined wantarray && AnyEvent::Util::guard { %state = () }
295} 571}
296 572
297sub http_get($$;@) { 573sub http_get($@) {
298 unshift @_, "GET"; 574 unshift @_, "GET";
299 &http_request 575 &http_request
300} 576}
301 577
302sub http_head($$;@) { 578sub http_head($@) {
303 unshift @_, "HEAD"; 579 unshift @_, "HEAD";
304 &http_request 580 &http_request
305} 581}
306 582
307sub http_post($$$;@) { 583sub http_post($$@) {
584 my $url = shift;
308 unshift @_, "POST", "body"; 585 unshift @_, "POST", $url, "body";
309 &http_request 586 &http_request
310} 587}
311 588
589=back
590
312=head2 GLOBAL FUNCTIONS AND VARIABLES 591=head2 GLOBAL FUNCTIONS AND VARIABLES
313 592
314=over 4 593=over 4
315 594
316=item AnyEvent::HTTP::set_proxy "proxy-url" 595=item AnyEvent::HTTP::set_proxy "proxy-url"
… …
336=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT 615=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
337 616
338The maximum time to cache a persistent connection, in seconds (default: 2). 617The maximum time to cache a persistent connection, in seconds (default: 2).
339 618
340Not implemented currently. 619Not implemented currently.
620
621=item $AnyEvent::HTTP::ACTIVE
622
623The number of active connections. This is not the number of currently
624running requests, but the number of currently open and non-idle TCP
625connections. This number of can be useful for load-leveling.
341 626
342=back 627=back
343 628
344=cut 629=cut
345 630
… …
354 639
355L<AnyEvent>. 640L<AnyEvent>.
356 641
357=head1 AUTHOR 642=head1 AUTHOR
358 643
359 Marc Lehmann <schmorp@schmorp.de> 644 Marc Lehmann <schmorp@schmorp.de>
360 http://home.schmorp.de/ 645 http://home.schmorp.de/
361 646
362=cut 647=cut
363 648
3641 6491
365 650

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