1 |
root |
1.1 |
=head1 NAME |
2 |
|
|
|
3 |
|
|
AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client |
4 |
|
|
|
5 |
|
|
=head1 SYNOPSIS |
6 |
|
|
|
7 |
|
|
use AnyEvent::HTTP; |
8 |
|
|
|
9 |
|
|
=head1 DESCRIPTION |
10 |
|
|
|
11 |
|
|
This module is an L<AnyEvent> user, you need to make sure that you use and |
12 |
|
|
run a supported event loop. |
13 |
|
|
|
14 |
root |
1.11 |
This module implements a simple, stateless and non-blocking HTTP |
15 |
|
|
client. It supports GET, POST and other request methods, cookies and more, |
16 |
|
|
all on a very low level. It can follow redirects supports proxies and |
17 |
|
|
automatically limits the number of connections to the values specified in |
18 |
|
|
the RFC. |
19 |
|
|
|
20 |
|
|
It should generally be a "good client" that is enough for most HTTP |
21 |
|
|
tasks. Simple tasks should be simple, but complex tasks should still be |
22 |
|
|
possible as the user retains control over request and response headers. |
23 |
|
|
|
24 |
|
|
The caller is responsible for authentication management, cookies (if |
25 |
|
|
the simplistic implementation in this module doesn't suffice), referer |
26 |
|
|
and other high-level protocol details for which this module offers only |
27 |
|
|
limited support. |
28 |
|
|
|
29 |
root |
1.1 |
=head2 METHODS |
30 |
|
|
|
31 |
|
|
=over 4 |
32 |
|
|
|
33 |
|
|
=cut |
34 |
|
|
|
35 |
|
|
package AnyEvent::HTTP; |
36 |
|
|
|
37 |
|
|
use strict; |
38 |
|
|
no warnings; |
39 |
|
|
|
40 |
|
|
use Carp; |
41 |
|
|
|
42 |
|
|
use AnyEvent (); |
43 |
|
|
use AnyEvent::Util (); |
44 |
|
|
use AnyEvent::Socket (); |
45 |
|
|
use AnyEvent::Handle (); |
46 |
|
|
|
47 |
|
|
use base Exporter::; |
48 |
|
|
|
49 |
root |
1.16 |
our $VERSION = '1.01'; |
50 |
root |
1.1 |
|
51 |
|
|
our @EXPORT = qw(http_get http_request); |
52 |
|
|
|
53 |
|
|
our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
54 |
root |
1.3 |
our $MAX_RECURSE = 10; |
55 |
root |
1.2 |
our $MAX_PERSISTENT = 8; |
56 |
|
|
our $PERSISTENT_TIMEOUT = 2; |
57 |
|
|
our $TIMEOUT = 300; |
58 |
root |
1.1 |
|
59 |
|
|
# changing these is evil |
60 |
|
|
our $MAX_PERSISTENT_PER_HOST = 2; |
61 |
root |
1.11 |
our $MAX_PER_HOST = 4; |
62 |
root |
1.1 |
|
63 |
root |
1.2 |
our $PROXY; |
64 |
root |
1.14 |
our $ACTIVE = 0; |
65 |
root |
1.2 |
|
66 |
root |
1.1 |
my %KA_COUNT; # number of open keep-alive connections per host |
67 |
root |
1.11 |
my %CO_SLOT; # number of open connections, and wait queue, per host |
68 |
root |
1.1 |
|
69 |
|
|
=item http_get $url, key => value..., $cb->($data, $headers) |
70 |
|
|
|
71 |
|
|
Executes an HTTP-GET request. See the http_request function for details on |
72 |
|
|
additional parameters. |
73 |
|
|
|
74 |
root |
1.5 |
=item http_head $url, key => value..., $cb->($data, $headers) |
75 |
|
|
|
76 |
|
|
Executes an HTTP-HEAD request. See the http_request function for details on |
77 |
|
|
additional parameters. |
78 |
|
|
|
79 |
|
|
=item http_post $url, $body, key => value..., $cb->($data, $headers) |
80 |
root |
1.3 |
|
81 |
root |
1.7 |
Executes an HTTP-POST request with a request body of C<$bod>. See the |
82 |
root |
1.3 |
http_request function for details on additional parameters. |
83 |
|
|
|
84 |
root |
1.1 |
=item http_request $method => $url, key => value..., $cb->($data, $headers) |
85 |
|
|
|
86 |
|
|
Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL |
87 |
|
|
must be an absolute http or https URL. |
88 |
|
|
|
89 |
root |
1.2 |
The callback will be called with the response data as first argument |
90 |
|
|
(or C<undef> if it wasn't available due to errors), and a hash-ref with |
91 |
|
|
response headers as second argument. |
92 |
|
|
|
93 |
root |
1.7 |
All the headers in that hash are lowercased. In addition to the response |
94 |
root |
1.2 |
headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and |
95 |
|
|
C<Reason> contain the three parts of the HTTP Status-Line of the same |
96 |
root |
1.10 |
name. If the server sends a header multiple lines, then their contents |
97 |
|
|
will be joined together with C<\x00>. |
98 |
root |
1.2 |
|
99 |
|
|
If an internal error occurs, such as not being able to resolve a hostname, |
100 |
|
|
then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> |
101 |
|
|
and the C<Reason> pseudo-header will contain an error message. |
102 |
|
|
|
103 |
root |
1.6 |
A typical callback might look like this: |
104 |
|
|
|
105 |
|
|
sub { |
106 |
|
|
my ($body, $hdr) = @_; |
107 |
|
|
|
108 |
|
|
if ($hdr->{Status} =~ /^2/) { |
109 |
|
|
... everything should be ok |
110 |
|
|
} else { |
111 |
|
|
print "error, $hdr->{Status} $hdr->{Reason}\n"; |
112 |
|
|
} |
113 |
|
|
} |
114 |
|
|
|
115 |
root |
1.1 |
Additional parameters are key-value pairs, and are fully optional. They |
116 |
|
|
include: |
117 |
|
|
|
118 |
|
|
=over 4 |
119 |
|
|
|
120 |
root |
1.3 |
=item recurse => $count (default: $MAX_RECURSE) |
121 |
root |
1.1 |
|
122 |
|
|
Whether to recurse requests or not, e.g. on redirects, authentication |
123 |
root |
1.3 |
retries and so on, and how often to do so. |
124 |
root |
1.1 |
|
125 |
|
|
=item headers => hashref |
126 |
|
|
|
127 |
root |
1.12 |
The request headers to use. Currently, C<http_request> may provide its |
128 |
|
|
own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers |
129 |
|
|
and will provide defaults for C<User-Agent:> and C<Referer:>. |
130 |
root |
1.1 |
|
131 |
|
|
=item timeout => $seconds |
132 |
|
|
|
133 |
|
|
The time-out to use for various stages - each connect attempt will reset |
134 |
root |
1.2 |
the timeout, as will read or write activity. Default timeout is 5 minutes. |
135 |
|
|
|
136 |
|
|
=item proxy => [$host, $port[, $scheme]] or undef |
137 |
|
|
|
138 |
|
|
Use the given http proxy for all requests. If not specified, then the |
139 |
|
|
default proxy (as specified by C<$ENV{http_proxy}>) is used. |
140 |
|
|
|
141 |
|
|
C<$scheme> must be either missing or C<http> for HTTP, or C<https> for |
142 |
|
|
HTTPS. |
143 |
root |
1.1 |
|
144 |
root |
1.3 |
=item body => $string |
145 |
|
|
|
146 |
|
|
The request body, usually empty. Will be-sent as-is (future versions of |
147 |
|
|
this module might offer more options). |
148 |
|
|
|
149 |
root |
1.10 |
=item cookie_jar => $hash_ref |
150 |
|
|
|
151 |
|
|
Passing this parameter enables (simplified) cookie-processing, loosely |
152 |
|
|
based on the original netscape specification. |
153 |
|
|
|
154 |
|
|
The C<$hash_ref> must be an (initially empty) hash reference which will |
155 |
|
|
get updated automatically. It is possible to save the cookie_jar to |
156 |
|
|
persistent storage with something like JSON or Storable, but this is not |
157 |
|
|
recommended, as expire times are currently being ignored. |
158 |
|
|
|
159 |
|
|
Note that this cookie implementation is not of very high quality, nor |
160 |
|
|
meant to be complete. If you want complete cookie management you have to |
161 |
|
|
do that on your own. C<cookie_jar> is meant as a quick fix to get some |
162 |
|
|
cookie-using sites working. Cookies are a privacy disaster, do not use |
163 |
|
|
them unless required to. |
164 |
|
|
|
165 |
root |
1.1 |
=back |
166 |
|
|
|
167 |
root |
1.9 |
Example: make a simple HTTP GET request for http://www.nethype.de/ |
168 |
|
|
|
169 |
|
|
http_request GET => "http://www.nethype.de/", sub { |
170 |
|
|
my ($body, $hdr) = @_; |
171 |
|
|
print "$body\n"; |
172 |
|
|
}; |
173 |
|
|
|
174 |
|
|
Example: make a HTTP HEAD request on https://www.google.com/, use a |
175 |
|
|
timeout of 30 seconds. |
176 |
|
|
|
177 |
|
|
http_request |
178 |
|
|
GET => "https://www.google.com", |
179 |
|
|
timeout => 30, |
180 |
|
|
sub { |
181 |
|
|
my ($body, $hdr) = @_; |
182 |
|
|
use Data::Dumper; |
183 |
|
|
print Dumper $hdr; |
184 |
|
|
} |
185 |
|
|
; |
186 |
root |
1.1 |
|
187 |
|
|
=cut |
188 |
|
|
|
189 |
root |
1.12 |
sub _slot_schedule; |
190 |
root |
1.11 |
sub _slot_schedule($) { |
191 |
|
|
my $host = shift; |
192 |
|
|
|
193 |
|
|
while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) { |
194 |
|
|
if (my $cb = shift @{ $CO_SLOT{$host}[1] }) { |
195 |
root |
1.12 |
# somebody wants that slot |
196 |
root |
1.11 |
++$CO_SLOT{$host}[0]; |
197 |
root |
1.14 |
++$ACTIVE; |
198 |
root |
1.11 |
|
199 |
|
|
$cb->(AnyEvent::Util::guard { |
200 |
root |
1.14 |
--$ACTIVE; |
201 |
root |
1.11 |
--$CO_SLOT{$host}[0]; |
202 |
|
|
_slot_schedule $host; |
203 |
|
|
}); |
204 |
|
|
} else { |
205 |
|
|
# nobody wants the slot, maybe we can forget about it |
206 |
|
|
delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0]; |
207 |
|
|
last; |
208 |
|
|
} |
209 |
|
|
} |
210 |
|
|
} |
211 |
|
|
|
212 |
|
|
# wait for a free slot on host, call callback |
213 |
|
|
sub _get_slot($$) { |
214 |
|
|
push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
215 |
|
|
|
216 |
|
|
_slot_schedule $_[0]; |
217 |
|
|
} |
218 |
|
|
|
219 |
elmex |
1.15 |
sub http_request($$@) { |
220 |
root |
1.1 |
my $cb = pop; |
221 |
|
|
my ($method, $url, %arg) = @_; |
222 |
|
|
|
223 |
|
|
my %hdr; |
224 |
|
|
|
225 |
root |
1.3 |
$method = uc $method; |
226 |
|
|
|
227 |
root |
1.8 |
if (my $hdr = $arg{headers}) { |
228 |
root |
1.1 |
while (my ($k, $v) = each %$hdr) { |
229 |
|
|
$hdr{lc $k} = $v; |
230 |
|
|
} |
231 |
|
|
} |
232 |
|
|
|
233 |
root |
1.8 |
my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; |
234 |
|
|
|
235 |
|
|
return $cb->(undef, { Status => 599, Reason => "recursion limit reached" }) |
236 |
|
|
if $recurse < 0; |
237 |
|
|
|
238 |
root |
1.2 |
my $proxy = $arg{proxy} || $PROXY; |
239 |
root |
1.1 |
my $timeout = $arg{timeout} || $TIMEOUT; |
240 |
|
|
|
241 |
|
|
$hdr{"user-agent"} ||= $USERAGENT; |
242 |
|
|
|
243 |
root |
1.10 |
my ($scheme, $authority, $upath, $query, $fragment) = |
244 |
|
|
$url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
245 |
root |
1.2 |
|
246 |
root |
1.10 |
$scheme = lc $scheme; |
247 |
root |
1.1 |
|
248 |
root |
1.10 |
my $uport = $scheme eq "http" ? 80 |
249 |
|
|
: $scheme eq "https" ? 443 |
250 |
|
|
: return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" }); |
251 |
|
|
|
252 |
root |
1.13 |
$hdr{referer} ||= "$scheme://$authority$upath"; # leave out fragment and query string, just a heuristic |
253 |
|
|
|
254 |
root |
1.10 |
$authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
255 |
|
|
or return $cb->(undef, { Status => 599, Reason => "unparsable URL" }); |
256 |
|
|
|
257 |
|
|
my $uhost = $1; |
258 |
|
|
$uport = $2 if defined $2; |
259 |
|
|
|
260 |
|
|
$uhost =~ s/^\[(.*)\]$/$1/; |
261 |
|
|
$upath .= "?$query" if length $query; |
262 |
|
|
|
263 |
|
|
$upath =~ s%^/?%/%; |
264 |
|
|
|
265 |
|
|
# cookie processing |
266 |
|
|
if (my $jar = $arg{cookie_jar}) { |
267 |
|
|
%$jar = () if $jar->{version} < 1; |
268 |
|
|
|
269 |
|
|
my @cookie; |
270 |
|
|
|
271 |
|
|
while (my ($chost, $v) = each %$jar) { |
272 |
|
|
next unless $chost eq substr $uhost, -length $chost; |
273 |
|
|
next unless $chost =~ /^\./; |
274 |
|
|
|
275 |
|
|
while (my ($cpath, $v) = each %$v) { |
276 |
|
|
next unless $cpath eq substr $upath, 0, length $cpath; |
277 |
|
|
|
278 |
|
|
while (my ($k, $v) = each %$v) { |
279 |
|
|
next if $scheme ne "https" && exists $v->{secure}; |
280 |
|
|
push @cookie, "$k=$v->{value}"; |
281 |
|
|
} |
282 |
|
|
} |
283 |
|
|
} |
284 |
|
|
|
285 |
|
|
$hdr{cookie} = join "; ", @cookie |
286 |
|
|
if @cookie; |
287 |
|
|
} |
288 |
root |
1.1 |
|
289 |
root |
1.10 |
my ($rhost, $rport, $rpath); # request host, port, path |
290 |
root |
1.2 |
|
291 |
root |
1.10 |
if ($proxy) { |
292 |
|
|
($rhost, $rport, $scheme) = @$proxy; |
293 |
|
|
$rpath = $url; |
294 |
|
|
} else { |
295 |
|
|
($rhost, $rport, $rpath) = ($uhost, $uport, $upath); |
296 |
|
|
$hdr{host} = $uhost; |
297 |
root |
1.2 |
} |
298 |
|
|
|
299 |
root |
1.10 |
$hdr{"content-length"} = length $arg{body}; |
300 |
root |
1.1 |
|
301 |
root |
1.11 |
my %state = (connect_guard => 1); |
302 |
|
|
|
303 |
|
|
_get_slot $uhost, sub { |
304 |
|
|
$state{slot_guard} = shift; |
305 |
root |
1.1 |
|
306 |
root |
1.11 |
return unless $state{connect_guard}; |
307 |
root |
1.1 |
|
308 |
root |
1.11 |
$state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
309 |
|
|
$state{fh} = shift |
310 |
|
|
or return $cb->(undef, { Status => 599, Reason => "$!" }); |
311 |
|
|
|
312 |
|
|
delete $state{connect_guard}; # reduce memory usage, save a tree |
313 |
|
|
|
314 |
|
|
# get handle |
315 |
|
|
$state{handle} = new AnyEvent::Handle |
316 |
|
|
fh => $state{fh}, |
317 |
|
|
($scheme eq "https" ? (tls => "connect") : ()); |
318 |
|
|
|
319 |
|
|
# limit the number of persistent connections |
320 |
|
|
if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
321 |
|
|
++$KA_COUNT{$_[1]}; |
322 |
|
|
$state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; |
323 |
|
|
$hdr{connection} = "keep-alive"; |
324 |
|
|
delete $hdr{connection}; # keep-alive not yet supported |
325 |
|
|
} else { |
326 |
|
|
delete $hdr{connection}; |
327 |
|
|
} |
328 |
root |
1.1 |
|
329 |
root |
1.11 |
# (re-)configure handle |
330 |
|
|
$state{handle}->timeout ($timeout); |
331 |
|
|
$state{handle}->on_error (sub { |
332 |
root |
1.14 |
my $errno = "$!"; |
333 |
root |
1.11 |
%state = (); |
334 |
root |
1.14 |
$cb->(undef, { Status => 599, Reason => $errno }); |
335 |
root |
1.11 |
}); |
336 |
|
|
$state{handle}->on_eof (sub { |
337 |
|
|
%state = (); |
338 |
|
|
$cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); |
339 |
|
|
}); |
340 |
root |
1.1 |
|
341 |
root |
1.11 |
# send request |
342 |
|
|
$state{handle}->push_write ( |
343 |
|
|
"$method $rpath HTTP/1.0\015\012" |
344 |
|
|
. (join "", map "$_: $hdr{$_}\015\012", keys %hdr) |
345 |
|
|
. "\015\012" |
346 |
|
|
. (delete $arg{body}) |
347 |
|
|
); |
348 |
root |
1.1 |
|
349 |
root |
1.11 |
%hdr = (); # reduce memory usage, save a kitten |
350 |
root |
1.1 |
|
351 |
root |
1.11 |
# status line |
352 |
|
|
$state{handle}->push_read (line => qr/\015?\012/, sub { |
353 |
|
|
$_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix |
354 |
|
|
or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" })); |
355 |
|
|
|
356 |
|
|
my %hdr = ( # response headers |
357 |
|
|
HTTPVersion => "\x00$1", |
358 |
|
|
Status => "\x00$2", |
359 |
|
|
Reason => "\x00$3", |
360 |
|
|
); |
361 |
|
|
|
362 |
|
|
# headers, could be optimized a bit |
363 |
|
|
$state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { |
364 |
|
|
for ("$_[1]\012") { |
365 |
|
|
# we support spaces in field names, as lotus domino |
366 |
|
|
# creates them. |
367 |
|
|
$hdr{lc $1} .= "\x00$2" |
368 |
|
|
while /\G |
369 |
|
|
([^:\000-\037]+): |
370 |
|
|
[\011\040]* |
371 |
|
|
((?: [^\015\012]+ | \015?\012[\011\040] )*) |
372 |
|
|
\015?\012 |
373 |
|
|
/gxc; |
374 |
root |
1.10 |
|
375 |
root |
1.11 |
/\G$/ |
376 |
|
|
or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" })); |
377 |
root |
1.10 |
} |
378 |
|
|
|
379 |
root |
1.11 |
substr $_, 0, 1, "" |
380 |
|
|
for values %hdr; |
381 |
|
|
|
382 |
|
|
my $finish = sub { |
383 |
|
|
%state = (); |
384 |
root |
1.10 |
|
385 |
root |
1.11 |
# set-cookie processing |
386 |
|
|
if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) { |
387 |
|
|
for (split /\x00/, $hdr{"set-cookie"}) { |
388 |
|
|
my ($cookie, @arg) = split /;\s*/; |
389 |
|
|
my ($name, $value) = split /=/, $cookie, 2; |
390 |
|
|
my %kv = (value => $value, map { split /=/, $_, 2 } @arg); |
391 |
|
|
|
392 |
|
|
my $cdom = (delete $kv{domain}) || $uhost; |
393 |
|
|
my $cpath = (delete $kv{path}) || "/"; |
394 |
|
|
|
395 |
|
|
$cdom =~ s/^.?/./; # make sure it starts with a "." |
396 |
|
|
|
397 |
|
|
next if $cdom =~ /\.$/; |
398 |
|
|
|
399 |
|
|
# this is not rfc-like and not netscape-like. go figure. |
400 |
|
|
my $ndots = $cdom =~ y/.//; |
401 |
|
|
next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); |
402 |
|
|
|
403 |
|
|
# store it |
404 |
|
|
$arg{cookie_jar}{version} = 1; |
405 |
|
|
$arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv; |
406 |
|
|
} |
407 |
|
|
} |
408 |
root |
1.8 |
|
409 |
root |
1.13 |
if ($_[1]{Status} =~ /^30[12]$/ && $recurse) { |
410 |
root |
1.11 |
# microsoft and other assholes don't give a shit for following standards, |
411 |
|
|
# try to support a common form of broken Location header. |
412 |
|
|
$_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%; |
413 |
|
|
|
414 |
|
|
http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
415 |
|
|
} else { |
416 |
|
|
$cb->($_[0], $_[1]); |
417 |
|
|
} |
418 |
|
|
}; |
419 |
root |
1.3 |
|
420 |
root |
1.11 |
if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { |
421 |
|
|
$finish->(undef, \%hdr); |
422 |
root |
1.3 |
} else { |
423 |
root |
1.11 |
if (exists $hdr{"content-length"}) { |
424 |
|
|
$_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { |
425 |
|
|
# could cache persistent connection now |
426 |
|
|
if ($hdr{connection} =~ /\bkeep-alive\b/i) { |
427 |
|
|
# but we don't, due to misdesigns, this is annoyingly complex |
428 |
|
|
}; |
429 |
|
|
|
430 |
|
|
$finish->($_[1], \%hdr); |
431 |
|
|
}); |
432 |
|
|
} else { |
433 |
|
|
# too bad, need to read until we get an error or EOF, |
434 |
|
|
# no way to detect winged data. |
435 |
|
|
$_[0]->on_error (sub { |
436 |
|
|
$finish->($_[0]{rbuf}, \%hdr); |
437 |
|
|
}); |
438 |
|
|
$_[0]->on_eof (undef); |
439 |
|
|
$_[0]->on_read (sub { }); |
440 |
|
|
} |
441 |
root |
1.3 |
} |
442 |
root |
1.11 |
}); |
443 |
root |
1.1 |
}); |
444 |
root |
1.11 |
}, sub { |
445 |
|
|
$timeout |
446 |
|
|
}; |
447 |
root |
1.1 |
}; |
448 |
|
|
|
449 |
|
|
defined wantarray && AnyEvent::Util::guard { %state = () } |
450 |
|
|
} |
451 |
|
|
|
452 |
elmex |
1.15 |
sub http_get($@) { |
453 |
root |
1.1 |
unshift @_, "GET"; |
454 |
|
|
&http_request |
455 |
|
|
} |
456 |
|
|
|
457 |
elmex |
1.15 |
sub http_head($@) { |
458 |
root |
1.4 |
unshift @_, "HEAD"; |
459 |
|
|
&http_request |
460 |
|
|
} |
461 |
|
|
|
462 |
elmex |
1.15 |
sub http_post($$@) { |
463 |
root |
1.3 |
unshift @_, "POST", "body"; |
464 |
|
|
&http_request |
465 |
|
|
} |
466 |
|
|
|
467 |
root |
1.9 |
=back |
468 |
|
|
|
469 |
root |
1.2 |
=head2 GLOBAL FUNCTIONS AND VARIABLES |
470 |
root |
1.1 |
|
471 |
|
|
=over 4 |
472 |
|
|
|
473 |
root |
1.2 |
=item AnyEvent::HTTP::set_proxy "proxy-url" |
474 |
|
|
|
475 |
|
|
Sets the default proxy server to use. The proxy-url must begin with a |
476 |
|
|
string of the form C<http://host:port> (optionally C<https:...>). |
477 |
|
|
|
478 |
root |
1.3 |
=item $AnyEvent::HTTP::MAX_RECURSE |
479 |
root |
1.1 |
|
480 |
root |
1.3 |
The default value for the C<recurse> request parameter (default: C<10>). |
481 |
root |
1.1 |
|
482 |
|
|
=item $AnyEvent::HTTP::USERAGENT |
483 |
|
|
|
484 |
|
|
The default value for the C<User-Agent> header (the default is |
485 |
|
|
C<Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
486 |
|
|
|
487 |
|
|
=item $AnyEvent::HTTP::MAX_PERSISTENT |
488 |
|
|
|
489 |
|
|
The maximum number of persistent connections to keep open (default: 8). |
490 |
|
|
|
491 |
root |
1.3 |
Not implemented currently. |
492 |
|
|
|
493 |
root |
1.1 |
=item $AnyEvent::HTTP::PERSISTENT_TIMEOUT |
494 |
|
|
|
495 |
root |
1.2 |
The maximum time to cache a persistent connection, in seconds (default: 2). |
496 |
root |
1.1 |
|
497 |
root |
1.3 |
Not implemented currently. |
498 |
|
|
|
499 |
root |
1.14 |
=item $AnyEvent::HTTP::ACTIVE |
500 |
|
|
|
501 |
|
|
The number of active connections. This is not the number of currently |
502 |
|
|
running requests, but the number of currently open and non-idle TCP |
503 |
|
|
connections. This number of can be useful for load-leveling. |
504 |
|
|
|
505 |
root |
1.1 |
=back |
506 |
|
|
|
507 |
|
|
=cut |
508 |
|
|
|
509 |
root |
1.2 |
sub set_proxy($) { |
510 |
|
|
$PROXY = [$2, $3 || 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix; |
511 |
|
|
} |
512 |
|
|
|
513 |
|
|
# initialise proxy from environment |
514 |
|
|
set_proxy $ENV{http_proxy}; |
515 |
|
|
|
516 |
root |
1.1 |
=head1 SEE ALSO |
517 |
|
|
|
518 |
|
|
L<AnyEvent>. |
519 |
|
|
|
520 |
|
|
=head1 AUTHOR |
521 |
|
|
|
522 |
|
|
Marc Lehmann <schmorp@schmorp.de> |
523 |
|
|
http://home.schmorp.de/ |
524 |
|
|
|
525 |
|
|
=cut |
526 |
|
|
|
527 |
|
|
1 |
528 |
|
|
|