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Comparing AnyEvent-HTTP/HTTP.pm (file contents):
Revision 1.1 by root, Tue Jun 3 16:37:13 2008 UTC vs.
Revision 1.38 by root, Sat Mar 7 03:43:09 2009 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 = '1.11';
35 54
36our @EXPORT = qw(http_get http_request); 55our @EXPORT = qw(http_get http_post http_head http_request);
37 56
38our $MAX_REDIRECTS = 10;
39our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; 57our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)";
58our $MAX_RECURSE = 10;
40our $MAX_PERSISTENT = 8; 59our $MAX_PERSISTENT = 8;
41our $PERSISTENT_TIMEOUT = 15; 60our $PERSISTENT_TIMEOUT = 2;
42our $TIMEOUT = 60; 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;
66
67our $PROXY;
68our $ACTIVE = 0;
47 69
48my %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
49 72
50=item http_get $url, key => value..., $cb->($data, $headers) 73=item http_get $url, key => value..., $cb->($data, $headers)
51 74
52Executes 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
53additional parameters. 76additional parameters and the return value.
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
83=item http_post $url, $body, key => value..., $cb->($data, $headers)
84
85Executes an HTTP-POST request with a request body of C<$body>. See the
86http_request function for details on additional parameters and the return
87value.
54 88
55=item http_request $method => $url, key => value..., $cb->($data, $headers) 89=item http_request $method => $url, key => value..., $cb->($data, $headers)
56 90
57Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL 91Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL
58must be an absolute http or https URL. 92must be an absolute http or https URL.
59 93
94When called in void context, nothing is returned. In other contexts,
95C<http_request> returns a "cancellation guard" - you have to keep the
96object at least alive until the callback get called. If the object gets
97destroyed before the callbakc is called, the request will be cancelled.
98
99The callback will be called with the response data as first argument
100(or C<undef> if it wasn't available due to errors), and a hash-ref with
101response headers as second argument.
102
103All the headers in that hash are lowercased. In addition to the response
104headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason>
105contain the three parts of the HTTP Status-Line of the same name. The
106pseudo-header C<URL> contains the original URL (which can differ from the
107requested URL when following redirects).
108
109If the server sends a header multiple times, then their contents will be
110joined together with a comma (C<,>), as per the HTTP spec.
111
112If an internal error occurs, such as not being able to resolve a hostname,
113then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599>
114and the C<Reason> pseudo-header will contain an error message.
115
116A typical callback might look like this:
117
118 sub {
119 my ($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
60Additional parameters are key-value pairs, and are fully optional. They 128Additional parameters are key-value pairs, and are fully optional. They
61include: 129include:
62 130
63=over 4 131=over 4
64 132
65=item recurse => $boolean (default: true) 133=item recurse => $count (default: $MAX_RECURSE)
66 134
67Whether to recurse requests or not, e.g. on redirects, authentication 135Whether to recurse requests or not, e.g. on redirects, authentication
68retries and so on. 136retries and so on, and how often to do so.
69 137
70=item headers => hashref 138=item headers => hashref
71 139
72The 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:>.
73 143
74=item timeout => $seconds 144=item timeout => $seconds
75 145
76The time-out to use for various stages - each connect attempt will reset 146The time-out to use for various stages - each connect attempt will reset
77the timeout, as will read or write activity. 147the timeout, as will read or write activity. Default timeout is 5 minutes.
148
149=item proxy => [$host, $port[, $scheme]] or undef
150
151Use the given http proxy for all requests. If not specified, then the
152default proxy (as specified by C<$ENV{http_proxy}>) is used.
153
154C<$scheme> must be either missing or C<http> for HTTP, or C<https> for
155HTTPS.
156
157=item body => $string
158
159The request body, usually empty. Will be-sent as-is (future versions of
160this module might offer more options).
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.
78 177
79=back 178=back
80 179
81=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 $request;
82 209
83=cut 210=cut
84 211
212sub _slot_schedule;
213sub _slot_schedule($) {
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($$) {
237 push @{ $CO_SLOT{$_[0]}[1] }, $_[1];
238
239 _slot_schedule $_[0];
240}
241
242our $qr_nl = qr<\015?\012>;
243our $qr_nlnl = qr<\015?\012\015?\012>;
244
85sub http_request($$$;@) { 245sub http_request($$@) {
86 my $cb = pop; 246 my $cb = pop;
87 my ($method, $url, %arg) = @_; 247 my ($method, $url, %arg) = @_;
88 248
89 my %hdr; 249 my %hdr;
90 250
251 $method = uc $method;
252
91 if (my $hdr = delete $arg{headers}) { 253 if (my $hdr = $arg{headers}) {
92 while (my ($k, $v) = each %$hdr) { 254 while (my ($k, $v) = each %$hdr) {
93 $hdr{lc $k} = $v; 255 $hdr{lc $k} = $v;
94 } 256 }
95 } 257 }
96 258
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
264 my $proxy = $arg{proxy} || $PROXY;
97 my $timeout = $arg{timeout} || $TIMEOUT; 265 my $timeout = $arg{timeout} || $TIMEOUT;
98 266
99 $hdr{"user-agent"} ||= $USERAGENT; 267 $hdr{"user-agent"} ||= $USERAGENT;
100 268
101 my ($scheme, $authority, $path, $query, $fragment) = 269 my ($uscheme, $uauthority, $upath, $query, $fragment) =
102 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; 270 $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
103 271
104 $scheme = lc $scheme; 272 $uscheme = lc $uscheme;
273
105 my $port = $scheme eq "http" ? 80 274 my $uport = $uscheme eq "http" ? 80
106 : $scheme eq "https" ? 443 275 : $uscheme eq "https" ? 443
107 : croak "$url: only http and https URLs supported"; 276 : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url });
108 277
278 $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic
279
109 $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x 280 $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x
110 or croak "$authority: unparsable URL"; 281 or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url });
111 282
112 my $host = $1; 283 my $uhost = $1;
113 $port = $2 if defined $2; 284 $uport = $2 if defined $2;
114 285
115 $host =~ s/^\[(.*)\]$/$1/; 286 $uhost =~ s/^\[(.*)\]$/$1/;
116 $path .= "?$query" if length $query; 287 $upath .= "?$query" if length $query;
117 288
118 $hdr{host} = $host = lc $host; 289 $upath =~ s%^/?%/%;
119 290
120 my %state; 291 # cookie processing
121 292 if (my $jar = $arg{cookie_jar}) {
122 my $body = ""; 293 %$jar = () if $jar->{version} != 1;
123 $state{body} = $body; 294
124 295 my @cookie;
125 $hdr{"content-length"} = length $body; 296
126 297 while (my ($chost, $v) = each %$jar) {
127 $state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub { 298 if ($chost =~ /^\./) {
128 $state{fh} = shift 299 next unless $chost eq substr $uhost, -length $chost;
129 or return $cb->(undef, { Status => 599, Reason => "$!" }); 300 } elsif ($chost =~ /\./) {
130 301 next unless $chost eq $uhost;
131 delete $state{connect_guard}; # reduce memory usage, save a tree
132
133 # get handle
134 $state{handle} = new AnyEvent::Handle
135 fh => $state{fh},
136 ($scheme eq "https" ? (tls => "connect") : ());
137
138 # limit the number of persistent connections
139 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
140 ++$KA_COUNT{$_[1]};
141 $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} };
142 $hdr{connection} = "keep-alive";
143 } else { 302 } else {
144 delete $hdr{connection}; 303 next;
304 }
305
306 while (my ($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 }
145 } 316 }
317
318 $hdr{cookie} = join "; ", @cookie
319 if @cookie;
320 }
146 321
147 # (re-)configure handle 322 my ($rhost, $rport, $rscheme, $rpath); # request host, port, path
148 $state{handle}->timeout ($timeout); 323
149 $state{handle}->on_error (sub { 324 if ($proxy) {
150 %state = (); 325 ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy);
326
327 # don't support https requests over https-proxy transport,
328 # can't be done with tls as spec'ed, unless you double-encrypt.
329 $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https";
330 } else {
331 ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath);
332 }
333
334 $hdr{host} = $uhost;
335 $hdr{"content-length"} = length $arg{body};
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
344 $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub {
345 $state{fh} = shift
151 $cb->(undef, { Status => 599, Reason => "$!" }); 346 or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url });
152 }); 347 pop; # free memory, save a tree
153 $state{handle}->on_eof (sub {
154 %state = ();
155 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" });
156 });
157 348
158 # send request 349 return unless delete $state{connect_guard};
159 $state{handle}->push_write (
160 "\U$method\E $path HTTP/1.0\015\012"
161 . (join "", map "$_: $hdr{$_}\015\012", keys %hdr)
162 . "\015\012"
163 . (delete $state{body})
164 );
165 350
166 %hdr = (); # reduce memory usage, save a kitten 351 # get handle
352 $state{handle} = new AnyEvent::Handle
353 fh => $state{fh},
354 timeout => $timeout;
167 355
168 # status line 356 # limit the number of persistent connections
169 $state{handle}->push_read (line => qr/\015?\012/, sub { 357 # keepalive not yet supported
170 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix 358 if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) {
171 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" })); 359 ++$KA_COUNT{$_[1]};
172 360 $state{handle}{ka_count_guard} = AnyEvent::Util::guard {
173 my %hdr = ( # response headers 361 --$KA_COUNT{$_[1]}
174 HTTPVersion => ",$1",
175 Status => ",$2",
176 Reason => ",$3",
177 );
178
179 # headers, could be optimized a bit
180 $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub {
181 for ("$_[1]\012") {
182 $hdr{lc $1} .= ",$2"
183 while /\G
184 ([^:\000-\040]+):
185 [\011\040]*
186 ((?: [^\015\012]+ | \015?\012[\011\040] )*)
187 \015?\012
188 /gxc;
189
190 /\G$/
191 or return $cb->(undef, { Status => 599, Reason => "garbled response headers" });
192 } 362 };
363 $hdr{connection} = "keep-alive";
364 } else {
365 delete $hdr{connection};
366 }
193 367
368 # (re-)configure handle
369 $state{handle}->on_error (sub {
370 my $errno = "$!";
371 %state = ();
372 $cb->(undef, { Status => 599, Reason => $errno, URL => $url });
373 });
374 $state{handle}->on_eof (sub {
375 %state = ();
376 $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url });
377 });
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
407 # headers, could be optimized a bit
408 $state{handle}->unshift_read (line => $qr_nlnl, sub {
409 for ("$_[1]\012") {
410 y/\015//d; # weed out any \015, as they show up in the weirdest of places.
411
412 # we support spaces in field names, as lotus domino
413 # creates them (actually spaces around seperators
414 # are strictly allowed in http, they are a security issue).
415 $hdr{lc $1} .= ",$2"
416 while /\G
417 ([^:\000-\037]+):
418 [\011\040]*
419 ((?: [^\012]+ | \012[\011\040] )*)
420 \012
421 /gxc;
422
423 /\G$/
424 or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url }));
425 }
426
194 substr $_, 0, 1, "" 427 substr $_, 0, 1, ""
195 for values %hdr; 428 for values %hdr;
196 429
197 if (exists $hdr{"content-length"}) { 430 my $finish = sub {
198 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { 431 $state{handle}->destroy;
199 # could cache persistent connection now 432 %state = ();
200 if ($hdr{connection} =~ /\bkeep-alive\b/i) { 433
434 # set-cookie processing
435 if ($arg{cookie_jar}) {
436 for ($hdr{"set-cookie"}) {
437 # parse NAME=VALUE
438 my @kv;
439
440 while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) {
441 my $name = $1;
442 my $value = $3;
443
444 unless ($value) {
445 $value = $2;
446 $value =~ s/\\(.)/$1/gs;
447 }
448
449 push @kv, $name => $value;
450
451 last unless /\G\s*;/gc;
452 }
453
454 last unless @kv;
455
456 my $name = shift @kv;
457 my %kv = (value => shift @kv, @kv);
458
459 my $cdom;
460 my $cpath = (delete $kv{path}) || "/";
461
462 if (exists $kv{domain}) {
463 $cdom = delete $kv{domain};
464
465 $cdom =~ s/^\.?/./; # make sure it starts with a "."
466
467 next if $cdom =~ /\.$/;
468
469 # this is not rfc-like and not netscape-like. go figure.
470 my $ndots = $cdom =~ y/.//;
471 next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2);
472 } else {
473 $cdom = $uhost;
474 }
475
476 # store it
477 $arg{cookie_jar}{version} = 1;
478 $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv;
479
480 redo if /\G\s*,/gc;
481 }
482 }
483
484 # microsoft and other shitheads don't give a shit for following standards,
485 # try to support some common forms of broken Location headers.
486 if ($_[1]{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) {
487 $_[1]{location} =~ s/^\.\/+//;
488
489 my $url = "$rscheme://$uhost:$uport";
490
491 unless ($_[1]{location} =~ s/^\///) {
492 $url .= $upath;
493 $url =~ s/\/[^\/]*$//;
494 }
495
496 $_[1]{location} = "$url/$_[1]{location}";
497 }
498
499 if ($_[1]{Status} =~ /^30[12]$/ && $recurse && $method ne "POST") {
500 # apparently, mozilla et al. just change POST to GET here
501 # more research is needed before we do the same
502 http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
503 } elsif ($_[1]{Status} == 303 && $recurse) {
504 # even http/1.1 is unclear on how to mutate the method
505 $method = "GET" unless $method eq "HEAD";
506 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
507 } elsif ($_[1]{Status} == 307 && $recurse && $method =~ /^(?:GET|HEAD)$/) {
508 http_request ($method => $_[1]{location}, %arg, recurse => $recurse - 1, $cb);
509 } else {
510 $cb->($_[0], $_[1]);
511 }
201 }; 512 };
202 513
514 if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") {
515 $finish->(undef, \%hdr);
516 } else {
517 if (exists $hdr{"content-length"}) {
518 $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub {
519 # could cache persistent connection now
520 if ($hdr{connection} =~ /\bkeep-alive\b/i) {
521 # but we don't, due to misdesigns, this is annoyingly complex
522 };
523
524 $finish->($_[1], \%hdr);
525 });
526 } else {
527 # too bad, need to read until we get an error or EOF,
528 # no way to detect winged data.
529 $_[0]->on_error (sub {
530 # delete ought to be more efficient, as we would have to make
531 # a copy otherwise as $_[0] gets destroyed.
532 $finish->(delete $_[0]{rbuf}, \%hdr);
533 });
534 $_[0]->on_eof (undef);
535 $_[0]->on_read (sub { });
536 }
537 }
538 });
539 });
540 };
541
542 # now handle proxy-CONNECT method
543 if ($proxy && $uscheme eq "https") {
544 # oh dear, we have to wrap it into a connect request
545
546 # maybe re-use $uauthority with patched port?
547 $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012");
548 $state{handle}->push_read (line => $qr_nlnl, sub {
549 $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix
550 or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid proxy connect response ($_[1])", URL => $url }));
551
552 if ($2 == 200) {
553 $rpath = $upath;
554 &$handle_actual_request;
555 } else {
203 %state = (); 556 %state = ();
204 $cb->($_[1], \%hdr); 557 $cb->(undef, { Status => $2, Reason => $3, URL => $url });
205 }); 558 }
206 } else {
207 # too bad, need to read until we get an error or EOF,
208 # no way to detect winged data.
209 $_[0]->on_error (sub {
210 %state = ();
211 $cb->($_[0]{rbuf}, \%hdr);
212 });
213 $_[0]->on_eof (undef);
214 $_[0]->on_read (sub { });
215 } 559 });
560 } else {
561 &$handle_actual_request;
216 }); 562 }
563
564 }, sub {
565 $timeout
217 }); 566 };
218 }, sub {
219 $timeout
220 }; 567 };
221 568
222 defined wantarray && AnyEvent::Util::guard { %state = () } 569 defined wantarray && AnyEvent::Util::guard { %state = () }
223} 570}
224 571
225sub http_get($$;@) { 572sub http_get($@) {
226 unshift @_, "GET"; 573 unshift @_, "GET";
227 &http_request 574 &http_request
228} 575}
229 576
577sub http_head($@) {
578 unshift @_, "HEAD";
579 &http_request
580}
581
582sub http_post($$@) {
583 my $url = shift;
584 unshift @_, "POST", $url, "body";
585 &http_request
586}
587
588=back
589
230=head2 GLOBAL VARIABLES 590=head2 GLOBAL FUNCTIONS AND VARIABLES
231 591
232=over 4 592=over 4
233 593
594=item AnyEvent::HTTP::set_proxy "proxy-url"
595
596Sets the default proxy server to use. The proxy-url must begin with a
597string of the form C<http://host:port> (optionally C<https:...>).
598
234=item $AnyEvent::HTTP::MAX_REDIRECTS 599=item $AnyEvent::HTTP::MAX_RECURSE
235 600
236The default value for the C<max_redirects> request parameter 601The default value for the C<recurse> request parameter (default: C<10>).
237(default: C<10>).
238 602
239=item $AnyEvent::HTTP::USERAGENT 603=item $AnyEvent::HTTP::USERAGENT
240 604
241The default value for the C<User-Agent> header (the default is 605The default value for the C<User-Agent> header (the default is
242C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). 606C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>).
243 607
244=item $AnyEvent::HTTP::MAX_PERSISTENT 608=item $AnyEvent::HTTP::MAX_PERSISTENT
245 609
246The maximum number of persistent connections to keep open (default: 8). 610The maximum number of persistent connections to keep open (default: 8).
247 611
612Not implemented currently.
613
248=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT 614=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT
249 615
250The maximum time to cache a persistent connection, in seconds (default: 15). 616The maximum time to cache a persistent connection, in seconds (default: 2).
617
618Not implemented currently.
619
620=item $AnyEvent::HTTP::ACTIVE
621
622The number of active connections. This is not the number of currently
623running requests, but the number of currently open and non-idle TCP
624connections. This number of can be useful for load-leveling.
251 625
252=back 626=back
253 627
254=cut 628=cut
255 629
630sub set_proxy($) {
631 $PROXY = [$2, $3 || 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix;
632}
633
634# initialise proxy from environment
635set_proxy $ENV{http_proxy};
636
256=head1 SEE ALSO 637=head1 SEE ALSO
257 638
258L<AnyEvent>. 639L<AnyEvent>.
259 640
260=head1 AUTHOR 641=head1 AUTHOR
261 642
262 Marc Lehmann <schmorp@schmorp.de> 643 Marc Lehmann <schmorp@schmorp.de>
263 http://home.schmorp.de/ 644 http://home.schmorp.de/
645
646With many thanks to Дмитрий Шалашов, who provided countless
647testcases and bugreports.
264 648
265=cut 649=cut
266 650
2671 6511
268 652

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