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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.4 by root, Wed Jun 4 11:59:22 2008 UTC vs.
Revision 1.31 by root, Fri Oct 24 01:25:54 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
78=item http_head $url, key => value..., $cb->($data, $headers)
79
80Executes an HTTP-HEAD request. See the http_request function for details
81on additional parameters and the return value.
82
57=item http_get $url, $body, key => value..., $cb->($data, $headers) 83=item http_post $url, $body, key => value..., $cb->($data, $headers)
58 84
59Executes an HTTP-POST request with a requets body of C<$bod>. See the 85Executes an HTTP-POST request with a request body of C<$body>. See the
60http_request function for details on additional parameters. 86http_request function for details on additional parameters and the return
87value.
61 88
62=item http_request $method => $url, key => value..., $cb->($data, $headers) 89=item http_request $method => $url, key => value..., $cb->($data, $headers)
63 90
64Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL 91Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
65must be an absolute http or https URL. 92must be an absolute http or https URL.
93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
66 98
67The callback will be called with the response data as first argument 99The callback will be called with the response data as first argument
68(or C<undef> if it wasn't available due to errors), and a hash-ref with 100(or C<undef> if it wasn't available due to errors), and a hash-ref with
69response headers as second argument. 101response headers as second argument.
70 102
71All the headers in that has are lowercased. In addition to the response 103All the headers in that hash are lowercased. In addition to the response
72headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and 104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
73C<Reason> contain the three parts of the HTTP Status-Line of the same 105contain the three parts of the HTTP Status-Line of the same name. The
74name. 106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
109If the server sends a header multiple lines, then their contents will be
110joined together with a command (C<,>).
75 111
76If an internal error occurs, such as not being able to resolve a hostname, 112If an internal error occurs, such as not being able to resolve a hostname,
77then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> 113then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>
78and the C<Reason> pseudo-header will contain an error message. 114and the C<Reason> pseudo-header will contain an error message.
79 115
116A typical callback might look like this:
117
118 sub {
119 my ($body, $hdr) = @_;
120
121 if ($hdr->{Status} =~ /^2/) {
122 ... everything should be ok
123 } else {
124 print "error, $hdr->{Status} $hdr->{Reason}\n";
125 }
126 }
127
80Additional parameters are key-value pairs, and are fully optional. They 128Additional parameters are key-value pairs, and are fully optional. They
81include: 129include:
82 130
83=over 4 131=over 4
84 132
… …
87Whether to recurse requests or not, e.g. on redirects, authentication 135Whether to recurse requests or not, e.g. on redirects, authentication
88retries and so on, and how often to do so. 136retries and so on, and how often to do so.
89 137
90=item headers => hashref 138=item headers => hashref
91 139
92The 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:>.
93 143
94=item timeout => $seconds 144=item timeout => $seconds
95 145
96The 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
97the 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.
… …
107=item body => $string 157=item body => $string
108 158
109The 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
110this module might offer more options). 160this module might offer more options).
111 161
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
112=back 178=back
113 179
114=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 $request;
115 209
116=cut 210=cut
117 211
212sub _slot_schedule;
213sub _slot_schedule($) {
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($$) {
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238
239 _slot_schedule $_[0];
240}
241
118sub http_request($$$;@) { 242sub http_request($$@) {
119 my $cb = pop; 243 my $cb = pop;
120 my ($method, $url, %arg) = @_; 244 my ($method, $url, %arg) = @_;
121 245
122 my %hdr; 246 my %hdr;
123 247
124 $method = uc $method; 248 $method = uc $method;
125 249
126 if (my $hdr = delete $arg{headers}) { 250 if (my $hdr = $arg{headers}) {
127 while (my ($k, $v) = each %$hdr) { 251 while (my ($k, $v) = each %$hdr) {
128 $hdr{lc $k} = $v; 252 $hdr{lc $k} = $v;
129 } 253 }
130 } 254 }
131 255
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
132 my $proxy = $arg{proxy} || $PROXY; 261 my $proxy = $arg{proxy} || $PROXY;
133 my $timeout = $arg{timeout} || $TIMEOUT; 262 my $timeout = $arg{timeout} || $TIMEOUT;
134 my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE;
135 263
136 $hdr{"user-agent"} ||= $USERAGENT; 264 $hdr{"user-agent"} ||= $USERAGENT;
137 265
138 my ($host, $port, $path, $scheme); 266 my ($uscheme, $uauthority, $upath, $query, $fragment) =
267 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
268
269 $uscheme = lc $uscheme;
270
271 my $uport = $uscheme eq "http" ? 80
272 : $uscheme eq "https" ? 443
273 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
274
275 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
276
277 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/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 if ($chost =~ /^\./) {
296 next unless $chost eq substr $uhost, -length $chost;
297 } elsif ($chost =~ /\./) {
298 next unless $chost eq $uhost;
299 } else {
300 next;
301 }
302
303 while (my ($cpath, $v) = each %$v) {
304 next unless $cpath eq substr $upath, 0, length $cpath;
305
306 while (my ($k, $v) = each %$v) {
307 next if $uscheme ne "https" && exists $v->{secure};
308 my $value = $v->{value};
309 $value =~ s/([\\"])/\\$1/g;
310 push @cookie, "$k=\"$value\"";
311 }
312 }
313 }
314
315 $hdr{cookie} = join "; ", @cookie
316 if @cookie;
317 }
318
319 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
139 320
140 if ($proxy) { 321 if ($proxy) {
141 ($host, $port, $scheme) = @$proxy; 322 ($rhost, $rport, $rscheme, $rpath) = (@$proxy, $url);
142 $path = $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" && $rscheme eq "https";
143 } else { 327 } else {
144 ($scheme, my $authority, $path, my $query, my $fragment) = 328 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
145 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
146
147 $port = $scheme eq "http" ? 80
148 : $scheme eq "https" ? 443
149 : croak "$url: only http and https URLs supported";
150
151 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
152 or croak "$authority: unparsable URL";
153
154 $host = $1;
155 $port = $2 if defined $2;
156
157 $host =~ s/^\[(.*)\]$/$1/;
158 $path .= "?$query" if length $query;
159
160 $path = "/" unless $path;
161
162 $hdr{host} = $host = lc $host;
163 } 329 }
164 330
165 $scheme = lc $scheme; 331 $hdr{host} = $uhost;
166
167 my %state;
168
169 $state{body} = delete $arg{body};
170
171 $hdr{"content-length"} = length $state{body}; 332 $hdr{"content-length"} = length $arg{body};
172 333
334 my %state = (connect_guard => 1);
335
336 _get_slot $uhost, sub {
337 $state{slot_guard} = shift;
338
339 return unless $state{connect_guard};
340
173 $state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub { 341 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
174 $state{fh} = shift 342 $state{fh} = shift
175 or return $cb->(undef, { Status => 599, Reason => "$!" }); 343 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
176 344
177 delete $state{connect_guard}; # reduce memory usage, save a tree 345 delete $state{connect_guard}; # reduce memory usage, save a tree
178 346
179 # get handle 347 # get handle
180 $state{handle} = new AnyEvent::Handle 348 $state{handle} = new AnyEvent::Handle
181 fh => $state{fh}, 349 fh => $state{fh};
182 ($scheme eq "https" ? (tls => "connect") : ());
183 350
184 # limit the number of persistent connections 351 # limit the number of persistent connections
185 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { 352 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
186 ++$KA_COUNT{$_[1]}; 353 ++$KA_COUNT{$_[1]};
187 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; 354 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };
188 $hdr{connection} = "keep-alive"; 355 $hdr{connection} = "keep-alive";
189 delete $hdr{connection}; # keep-alive not yet supported 356 delete $hdr{connection}; # keep-alive not yet supported
190 } else { 357 } else {
191 delete $hdr{connection}; 358 delete $hdr{connection};
192 } 359 }
193 360
194 # (re-)configure handle 361 # (re-)configure handle
195 $state{handle}->timeout ($timeout); 362 $state{handle}->timeout ($timeout);
196 $state{handle}->on_error (sub { 363 $state{handle}->on_error (sub {
364 my $errno = "$!";
197 %state = (); 365 %state = ();
198 $cb->(undef, { Status => 599, Reason => "$!" }); 366 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
199 }); 367 });
200 $state{handle}->on_eof (sub { 368 $state{handle}->on_eof (sub {
201 %state = (); 369 %state = ();
202 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); 370 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
203 });
204
205 # send request
206 $state{handle}->push_write (
207 "$method $path HTTP/1.0\015\012"
208 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
209 . "\015\012"
210 . (delete $state{body})
211 );
212
213 %hdr = (); # reduce memory usage, save a kitten
214
215 # status line
216 $state{handle}->push_read (line => qr/\015?\012/, sub {
217 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix
218 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" }));
219
220 my %hdr = ( # response headers
221 HTTPVersion => ",$1",
222 Status => ",$2",
223 Reason => ",$3",
224 ); 371 });
225 372
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
226 # headers, could be optimized a bit 401 # headers, could be optimized a bit
227 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { 402 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {
228 for ("$_[1]\012") { 403 for ("$_[1]\012") {
404 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
405
229 # we support spaces in field names, as lotus domino 406 # we support spaces in field names, as lotus domino
230 # creates them. 407 # creates them (actually spaces around seperators
408 # are strictly allowed in http, they are a security issue).
231 $hdr{lc $1} .= ",$2" 409 $hdr{lc $1} .= ",$2"
232 while /\G 410 while /\G
233 ([^:\000-\037]+): 411 ([^:\000-\037]+):
234 [\011\040]* 412 [\011\040]*
235 ((?: [^\015\012]+ | \015?\012[\011\040] )*) 413 ((?: [^\012]+ | \012[\011\040] )*)
236 \015?\012 414 \012
237 /gxc; 415 /gxc;
238 416
239 /\G$/ 417 /\G$/
240 or return $cb->(undef, { Status => 599, Reason => "garbled response headers" }); 418 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
241 } 419 }
242 420
243 substr $_, 0, 1, "" 421 substr $_, 0, 1, ""
244 for values %hdr; 422 for values %hdr;
245 423
246 if ($method eq "HEAD") { 424 my $finish = sub {
247 %state = (); 425 # TODO: use destroy method, when/if available
248 $cb->(undef, \%hdr); 426 #$state{handle}->destroy;
249 } else { 427 $state{handle}->on_eof (undef);
250 if (exists $hdr{"content-length"}) { 428 $state{handle}->on_error (undef);
251 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
252 # could cache persistent connection now
253 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
254 # but we don't, due to misdesigns, this is annoyingly complex
255 };
256
257 %state = (); 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 {
258 $cb->($_[1], \%hdr); 507 $cb->($_[0], $_[1]);
508 }
259 }); 509 };
510
511 if ($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;
260 } else { 550 } else {
261 # too bad, need to read until we get an error or EOF,
262 # no way to detect winged data.
263 $_[0]->on_error (sub {
264 %state = (); 551 %state = ();
265 $cb->($_[0]{rbuf}, \%hdr); 552 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
266 });
267 $_[0]->on_eof (undef);
268 $_[0]->on_read (sub { });
269 } 553 }
270 } 554 });
555 } else {
556 &$handle_actual_request;
271 }); 557 }
558
559 }, sub {
560 $timeout
272 }); 561 };
273 }, sub {
274 $timeout
275 }; 562 };
276 563
277 defined wantarray && AnyEvent::Util::guard { %state = () } 564 defined wantarray && AnyEvent::Util::guard { %state = () }
278} 565}
279 566
280sub http_get($$;@) { 567sub http_get($@) {
281 unshift @_, "GET"; 568 unshift @_, "GET";
282 &http_request 569 &http_request
283} 570}
284 571
285sub http_head($$;@) { 572sub http_head($@) {
286 unshift @_, "HEAD"; 573 unshift @_, "HEAD";
287 &http_request 574 &http_request
288} 575}
289 576
290sub http_post($$$;@) { 577sub http_post($$@) {
578 my $url = shift;
291 unshift @_, "POST", "body"; 579 unshift @_, "POST", $url, "body";
292 &http_request 580 &http_request
293} 581}
294 582
583=back
584
295=head2 GLOBAL FUNCTIONS AND VARIABLES 585=head2 GLOBAL FUNCTIONS AND VARIABLES
296 586
297=over 4 587=over 4
298 588
299=item AnyEvent::HTTP::set_proxy "proxy-url" 589=item AnyEvent::HTTP::set_proxy "proxy-url"
… …
319=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT 609=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
320 610
321The maximum time to cache a persistent connection, in seconds (default: 2). 611The maximum time to cache a persistent connection, in seconds (default: 2).
322 612
323Not 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.
324 620
325=back 621=back
326 622
327=cut 623=cut
328 624
… …
337 633
338L<AnyEvent>. 634L<AnyEvent>.
339 635
340=head1 AUTHOR 636=head1 AUTHOR
341 637
342 Marc Lehmann <schmorp@schmorp.de> 638 Marc Lehmann <schmorp@schmorp.de>
343 http://home.schmorp.de/ 639 http://home.schmorp.de/
344 640
345=cut 641=cut
346 642
3471 6431
348 644

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