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3 | AnyEvent::HTTP - simple but non-blocking HTTP/HTTPS client |
3 | AnyEvent::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; |
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8 | |
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9 | http_get "http://www.nethype.de/", sub { print $_[1] }; |
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10 | |
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11 | # ... do something else here |
8 | |
12 | |
9 | =head1 DESCRIPTION |
13 | =head1 DESCRIPTION |
10 | |
14 | |
11 | This module is an L<AnyEvent> user, you need to make sure that you use and |
15 | This module is an L<AnyEvent> user, you need to make sure that you use and |
12 | run a supported event loop. |
16 | run a supported event loop. |
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17 | |
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18 | This module implements a simple, stateless and non-blocking HTTP |
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19 | client. It supports GET, POST and other request methods, cookies and more, |
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20 | all on a very low level. It can follow redirects supports proxies and |
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21 | automatically limits the number of connections to the values specified in |
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22 | the RFC. |
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23 | |
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24 | It should generally be a "good client" that is enough for most HTTP |
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25 | tasks. Simple tasks should be simple, but complex tasks should still be |
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26 | possible as the user retains control over request and response headers. |
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27 | |
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28 | The caller is responsible for authentication management, cookies (if |
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29 | the simplistic implementation in this module doesn't suffice), referer |
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30 | and other high-level protocol details for which this module offers only |
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31 | limited support. |
13 | |
32 | |
14 | =head2 METHODS |
33 | =head2 METHODS |
15 | |
34 | |
16 | =over 4 |
35 | =over 4 |
17 | |
36 | |
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29 | use AnyEvent::Socket (); |
48 | use AnyEvent::Socket (); |
30 | use AnyEvent::Handle (); |
49 | use AnyEvent::Handle (); |
31 | |
50 | |
32 | use base Exporter::; |
51 | use base Exporter::; |
33 | |
52 | |
34 | our $VERSION = '1.0'; |
53 | our $VERSION = '1.12'; |
35 | |
54 | |
36 | our @EXPORT = qw(http_get http_request); |
55 | our @EXPORT = qw(http_get http_post http_head http_request); |
37 | |
56 | |
38 | our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
57 | our $USERAGENT = "Mozilla/5.0 (compatible; AnyEvent::HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
39 | our $MAX_RECURSE = 10; |
58 | our $MAX_RECURSE = 10; |
40 | our $MAX_PERSISTENT = 8; |
59 | our $MAX_PERSISTENT = 8; |
41 | our $PERSISTENT_TIMEOUT = 2; |
60 | our $PERSISTENT_TIMEOUT = 2; |
42 | our $TIMEOUT = 300; |
61 | our $TIMEOUT = 300; |
43 | |
62 | |
44 | # changing these is evil |
63 | # changing these is evil |
45 | our $MAX_PERSISTENT_PER_HOST = 2; |
64 | our $MAX_PERSISTENT_PER_HOST = 2; |
46 | our $MAX_PER_HOST = 4; # not respected yet :( |
65 | our $MAX_PER_HOST = 4; |
47 | |
66 | |
48 | our $PROXY; |
67 | our $PROXY; |
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68 | our $ACTIVE = 0; |
49 | |
69 | |
50 | my %KA_COUNT; # number of open keep-alive connections per host |
70 | my %KA_COUNT; # number of open keep-alive connections per host |
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71 | my %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 | |
54 | Executes an HTTP-GET request. See the http_request function for details on |
75 | Executes an HTTP-GET request. See the http_request function for details on |
55 | additional parameters. |
76 | additional 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 | |
59 | Executes an HTTP-HEAD request. See the http_request function for details on |
80 | Executes an HTTP-HEAD request. See the http_request function for details |
60 | additional parameters. |
81 | on 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, $headers) |
63 | |
84 | |
64 | Executes an HTTP-POST request with a request body of C<$bod>. See the |
85 | Executes an HTTP-POST request with a request body of C<$body>. See the |
65 | http_request function for details on additional parameters. |
86 | http_request function for details on additional parameters and the return |
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87 | value. |
66 | |
88 | |
67 | =item http_request $method => $url, key => value..., $cb->($data, $headers) |
89 | =item http_request $method => $url, key => value..., $cb->($data, $headers) |
68 | |
90 | |
69 | Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL |
91 | Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL |
70 | must be an absolute http or https URL. |
92 | must be an absolute http or https URL. |
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93 | |
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94 | When called in void context, nothing is returned. In other contexts, |
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95 | C<http_request> returns a "cancellation guard" - you have to keep the |
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96 | object at least alive until the callback get called. If the object gets |
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97 | destroyed before the callbakc is called, the request will be cancelled. |
71 | |
98 | |
72 | The callback will be called with the response data as first argument |
99 | The 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 |
74 | response headers as second argument. |
101 | response headers as second argument. |
75 | |
102 | |
76 | All the headers in that hash are lowercased. In addition to the response |
103 | All the headers in that hash are lowercased. In addition to the response |
77 | headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and |
104 | headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason> |
78 | C<Reason> contain the three parts of the HTTP Status-Line of the same |
105 | contain the three parts of the HTTP Status-Line of the same name. The |
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106 | pseudo-header C<URL> contains the original URL (which can differ from the |
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107 | requested URL when following redirects). |
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108 | |
79 | name. If the server sends a header multiple lines, then their contents |
109 | If the server sends a header multiple times, then their contents will be |
80 | will be joined together with C<\x00>. |
110 | joined together with a comma (C<,>), as per the HTTP spec. |
81 | |
111 | |
82 | If an internal error occurs, such as not being able to resolve a hostname, |
112 | If an internal error occurs, such as not being able to resolve a hostname, |
83 | then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> |
113 | then C<$data> will be C<undef>, C<< $headers->{Status} >> will be C<599> |
84 | and the C<Reason> pseudo-header will contain an error message. |
114 | and the C<Reason> pseudo-header will contain an error message. |
85 | |
115 | |
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105 | Whether to recurse requests or not, e.g. on redirects, authentication |
135 | Whether to recurse requests or not, e.g. on redirects, authentication |
106 | retries and so on, and how often to do so. |
136 | retries and so on, and how often to do so. |
107 | |
137 | |
108 | =item headers => hashref |
138 | =item headers => hashref |
109 | |
139 | |
110 | The request headers to use. |
140 | The request headers to use. Currently, C<http_request> may provide its |
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141 | own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers |
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142 | and will provide defaults for C<User-Agent:> and C<Referer:>. |
111 | |
143 | |
112 | =item timeout => $seconds |
144 | =item timeout => $seconds |
113 | |
145 | |
114 | The time-out to use for various stages - each connect attempt will reset |
146 | The time-out to use for various stages - each connect attempt will reset |
115 | the timeout, as will read or write activity. Default timeout is 5 minutes. |
147 | the timeout, as will read or write activity. Default timeout is 5 minutes. |
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163 | use Data::Dumper; |
195 | use Data::Dumper; |
164 | print Dumper $hdr; |
196 | print Dumper $hdr; |
165 | } |
197 | } |
166 | ; |
198 | ; |
167 | |
199 | |
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200 | Example: make another simple HTTP GET request, but immediately try to |
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201 | cancel it. |
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202 | |
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203 | my $request = http_request GET => "http://www.nethype.de/", sub { |
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204 | my ($body, $hdr) = @_; |
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205 | print "$body\n"; |
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206 | }; |
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207 | |
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208 | undef $request; |
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209 | |
168 | =cut |
210 | =cut |
169 | |
211 | |
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212 | sub _slot_schedule; |
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213 | sub _slot_schedule($) { |
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214 | my $host = shift; |
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215 | |
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216 | while ($CO_SLOT{$host}[0] < $MAX_PER_HOST) { |
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217 | if (my $cb = shift @{ $CO_SLOT{$host}[1] }) { |
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218 | # somebody wants that slot |
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219 | ++$CO_SLOT{$host}[0]; |
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220 | ++$ACTIVE; |
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221 | |
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222 | $cb->(AnyEvent::Util::guard { |
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223 | --$ACTIVE; |
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224 | --$CO_SLOT{$host}[0]; |
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225 | _slot_schedule $host; |
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226 | }); |
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227 | } else { |
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228 | # nobody wants the slot, maybe we can forget about it |
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229 | delete $CO_SLOT{$host} unless $CO_SLOT{$host}[0]; |
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230 | last; |
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231 | } |
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232 | } |
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233 | } |
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234 | |
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235 | # wait for a free slot on host, call callback |
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236 | sub _get_slot($$) { |
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237 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
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238 | |
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239 | _slot_schedule $_[0]; |
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240 | } |
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241 | |
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242 | our $qr_nl = qr<\015?\012>; |
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243 | our $qr_nlnl = qr<\015?\012\015?\012>; |
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244 | |
170 | sub http_request($$$;@) { |
245 | sub http_request($$@) { |
171 | my $cb = pop; |
246 | my $cb = pop; |
172 | my ($method, $url, %arg) = @_; |
247 | my ($method, $url, %arg) = @_; |
173 | |
248 | |
174 | my %hdr; |
249 | my %hdr; |
175 | |
250 | |
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179 | while (my ($k, $v) = each %$hdr) { |
254 | while (my ($k, $v) = each %$hdr) { |
180 | $hdr{lc $k} = $v; |
255 | $hdr{lc $k} = $v; |
181 | } |
256 | } |
182 | } |
257 | } |
183 | |
258 | |
184 | my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; |
259 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
185 | |
260 | |
186 | return $cb->(undef, { Status => 599, Reason => "recursion limit reached" }) |
261 | return $cb->(undef, { Status => 599, Reason => "recursion limit reached", URL => $url }) |
187 | if $recurse < 0; |
262 | if $recurse < 0; |
188 | |
263 | |
189 | my $proxy = $arg{proxy} || $PROXY; |
264 | my $proxy = $arg{proxy} || $PROXY; |
190 | my $timeout = $arg{timeout} || $TIMEOUT; |
265 | my $timeout = $arg{timeout} || $TIMEOUT; |
191 | |
266 | |
192 | $hdr{"user-agent"} ||= $USERAGENT; |
267 | $hdr{"user-agent"} ||= $USERAGENT; |
193 | |
268 | |
194 | my ($scheme, $authority, $upath, $query, $fragment) = |
269 | my ($uscheme, $uauthority, $upath, $query, $fragment) = |
195 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
270 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
196 | |
271 | |
197 | $scheme = lc $scheme; |
272 | $uscheme = lc $uscheme; |
198 | |
273 | |
199 | my $uport = $scheme eq "http" ? 80 |
274 | my $uport = $uscheme eq "http" ? 80 |
200 | : $scheme eq "https" ? 443 |
275 | : $uscheme eq "https" ? 443 |
201 | : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported" }); |
276 | : return $cb->(undef, { Status => 599, Reason => "only http and https URL schemes supported", URL => $url }); |
202 | |
277 | |
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278 | $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic |
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279 | |
203 | $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
280 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
204 | or return $cb->(undef, { Status => 599, Reason => "unparsable URL" }); |
281 | or return $cb->(undef, { Status => 599, Reason => "unparsable URL", URL => $url }); |
205 | |
282 | |
206 | my $uhost = $1; |
283 | my $uhost = $1; |
207 | $uport = $2 if defined $2; |
284 | $uport = $2 if defined $2; |
208 | |
285 | |
209 | $uhost =~ s/^\[(.*)\]$/$1/; |
286 | $uhost =~ s/^\[(.*)\]$/$1/; |
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211 | |
288 | |
212 | $upath =~ s%^/?%/%; |
289 | $upath =~ s%^/?%/%; |
213 | |
290 | |
214 | # cookie processing |
291 | # cookie processing |
215 | if (my $jar = $arg{cookie_jar}) { |
292 | if (my $jar = $arg{cookie_jar}) { |
216 | %$jar = () if $jar->{version} < 1; |
293 | %$jar = () if $jar->{version} != 1; |
217 | |
294 | |
218 | my @cookie; |
295 | my @cookie; |
219 | |
296 | |
220 | while (my ($chost, $v) = each %$jar) { |
297 | while (my ($chost, $v) = each %$jar) { |
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298 | if ($chost =~ /^\./) { |
221 | next unless $chost eq substr $uhost, -length $chost; |
299 | next unless $chost eq substr $uhost, -length $chost; |
222 | next unless $chost =~ /^\./; |
300 | } elsif ($chost =~ /\./) { |
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301 | next unless $chost eq $uhost; |
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302 | } else { |
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303 | next; |
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304 | } |
223 | |
305 | |
224 | while (my ($cpath, $v) = each %$v) { |
306 | while (my ($cpath, $v) = each %$v) { |
225 | next unless $cpath eq substr $upath, 0, length $cpath; |
307 | next unless $cpath eq substr $upath, 0, length $cpath; |
226 | |
308 | |
227 | while (my ($k, $v) = each %$v) { |
309 | while (my ($k, $v) = each %$v) { |
228 | next if $scheme ne "https" && exists $v->{secure}; |
310 | next if $uscheme ne "https" && exists $v->{secure}; |
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311 | my $value = $v->{value}; |
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312 | $value =~ s/([\\"])/\\$1/g; |
229 | push @cookie, "$k=$v->{value}"; |
313 | push @cookie, "$k=\"$value\""; |
230 | } |
314 | } |
231 | } |
315 | } |
232 | } |
316 | } |
233 | |
317 | |
234 | $hdr{cookie} = join "; ", @cookie |
318 | $hdr{cookie} = join "; ", @cookie |
235 | if @cookie; |
319 | if @cookie; |
236 | } |
320 | } |
237 | |
321 | |
238 | my ($rhost, $rport, $rpath); # request host, port, path |
322 | my ($rhost, $rport, $rscheme, $rpath); # request host, port, path |
239 | |
323 | |
240 | if ($proxy) { |
324 | if ($proxy) { |
241 | ($rhost, $rport, $scheme) = @$proxy; |
325 | ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy); |
242 | $rpath = $url; |
326 | |
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327 | # don't support https requests over https-proxy transport, |
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328 | # can't be done with tls as spec'ed, unless you double-encrypt. |
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329 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
243 | } else { |
330 | } else { |
244 | ($rhost, $rport, $rpath) = ($uhost, $uport, $upath); |
331 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
245 | $hdr{host} = $uhost; |
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246 | } |
332 | } |
247 | |
333 | |
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334 | $hdr{host} = $uhost; |
248 | $hdr{"content-length"} = length $arg{body}; |
335 | $hdr{"content-length"} = length $arg{body}; |
249 | |
336 | |
250 | my %state; |
337 | my %state = (connect_guard => 1); |
251 | |
338 | |
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339 | _get_slot $uhost, sub { |
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340 | $state{slot_guard} = shift; |
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341 | |
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342 | return unless $state{connect_guard}; |
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343 | |
252 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
344 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
253 | $state{fh} = shift |
345 | $state{fh} = shift |
254 | or return $cb->(undef, { Status => 599, Reason => "$!" }); |
346 | or return $cb->(undef, { Status => 599, Reason => "$!", URL => $url }); |
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347 | pop; # free memory, save a tree |
255 | |
348 | |
256 | delete $state{connect_guard}; # reduce memory usage, save a tree |
349 | return unless delete $state{connect_guard}; |
257 | |
350 | |
258 | # get handle |
351 | # get handle |
259 | $state{handle} = new AnyEvent::Handle |
352 | $state{handle} = new AnyEvent::Handle |
260 | fh => $state{fh}, |
353 | fh => $state{fh}, |
261 | ($scheme eq "https" ? (tls => "connect") : ()); |
354 | timeout => $timeout; |
262 | |
355 | |
263 | # limit the number of persistent connections |
356 | # limit the number of persistent connections |
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357 | # keepalive not yet supported |
264 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
358 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
265 | ++$KA_COUNT{$_[1]}; |
359 | ++$KA_COUNT{$_[1]}; |
266 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { --$KA_COUNT{$_[1]} }; |
360 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
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361 | --$KA_COUNT{$_[1]} |
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362 | }; |
267 | $hdr{connection} = "keep-alive"; |
363 | $hdr{connection} = "keep-alive"; |
268 | delete $hdr{connection}; # keep-alive not yet supported |
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269 | } else { |
364 | } else { |
270 | delete $hdr{connection}; |
365 | delete $hdr{connection}; |
271 | } |
366 | } |
272 | |
367 | |
273 | # (re-)configure handle |
368 | # (re-)configure handle |
274 | $state{handle}->timeout ($timeout); |
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275 | $state{handle}->on_error (sub { |
369 | $state{handle}->on_error (sub { |
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370 | my $errno = "$!"; |
276 | %state = (); |
371 | %state = (); |
277 | $cb->(undef, { Status => 599, Reason => "$!" }); |
372 | $cb->(undef, { Status => 599, Reason => $errno, URL => $url }); |
278 | }); |
373 | }); |
279 | $state{handle}->on_eof (sub { |
374 | $state{handle}->on_eof (sub { |
280 | %state = (); |
375 | %state = (); |
281 | $cb->(undef, { Status => 599, Reason => "unexpected end-of-file" }); |
376 | $cb->(undef, { Status => 599, Reason => "unexpected end-of-file", URL => $url }); |
282 | }); |
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283 | |
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284 | # send request |
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285 | $state{handle}->push_write ( |
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286 | "$method $rpath HTTP/1.0\015\012" |
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287 | . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) |
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288 | . "\015\012" |
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289 | . (delete $arg{body}) |
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290 | ); |
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291 | |
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292 | %hdr = (); # reduce memory usage, save a kitten |
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293 | |
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294 | # status line |
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295 | $state{handle}->push_read (line => qr/\015?\012/, sub { |
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296 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) \s+ ([^\015\012]+)/ix |
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297 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "invalid server response ($_[1])" })); |
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298 | |
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299 | my %hdr = ( # response headers |
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300 | HTTPVersion => "\x00$1", |
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301 | Status => "\x00$2", |
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302 | Reason => "\x00$3", |
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303 | ); |
377 | }); |
304 | |
378 | |
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379 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
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380 | |
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381 | # handle actual, non-tunneled, request |
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382 | my $handle_actual_request = sub { |
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383 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
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384 | |
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385 | # send request |
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386 | $state{handle}->push_write ( |
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387 | "$method $rpath HTTP/1.0\015\012" |
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388 | . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr) |
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389 | . "\015\012" |
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390 | . (delete $arg{body}) |
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391 | ); |
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392 | |
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393 | %hdr = (); # reduce memory usage, save a kitten |
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394 | |
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395 | # status line |
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396 | $state{handle}->push_read (line => $qr_nl, sub { |
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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 | |
305 | # headers, could be optimized a bit |
407 | # headers, could be optimized a bit |
306 | $state{handle}->unshift_read (line => qr/\015?\012\015?\012/, sub { |
408 | $state{handle}->unshift_read (line => $qr_nlnl, sub { |
307 | for ("$_[1]\012") { |
409 | for ("$_[1]\012") { |
|
|
410 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
|
|
411 | |
308 | # we support spaces in field names, as lotus domino |
412 | # we support spaces in field names, as lotus domino |
309 | # creates them. |
413 | # creates them (actually spaces around seperators |
|
|
414 | # are strictly allowed in http, they are a security issue). |
310 | $hdr{lc $1} .= "\x00$2" |
415 | $hdr{lc $1} .= ",$2" |
311 | while /\G |
416 | while /\G |
312 | ([^:\000-\037]+): |
417 | ([^:\000-\037]+): |
313 | [\011\040]* |
418 | [\011\040]* |
314 | ((?: [^\015\012]+ | \015?\012[\011\040] )*) |
419 | ((?: [^\012]+ | \012[\011\040] )*) |
315 | \015?\012 |
420 | \012 |
316 | /gxc; |
421 | /gxc; |
317 | |
422 | |
318 | /\G$/ |
423 | /\G$/ |
319 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers" })); |
424 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "garbled response headers", URL => $url })); |
320 | } |
|
|
321 | |
|
|
322 | substr $_, 0, 1, "" |
|
|
323 | for values %hdr; |
|
|
324 | |
|
|
325 | my $finish = sub { |
|
|
326 | %state = (); |
|
|
327 | |
|
|
328 | # set-cookie processing |
|
|
329 | if ($arg{cookie_jar} && exists $hdr{"set-cookie"}) { |
|
|
330 | for (split /\x00/, $hdr{"set-cookie"}) { |
|
|
331 | my ($cookie, @arg) = split /;\s*/; |
|
|
332 | my ($name, $value) = split /=/, $cookie, 2; |
|
|
333 | my %kv = (value => $value, map { split /=/, $_, 2 } @arg); |
|
|
334 | |
|
|
335 | my $cdom = (delete $kv{domain}) || $uhost; |
|
|
336 | my $cpath = (delete $kv{path}) || "/"; |
|
|
337 | |
|
|
338 | $cdom =~ s/^.?/./; # make sure it starts with a "." |
|
|
339 | |
|
|
340 | my $ndots = $cdom =~ y/.//; |
|
|
341 | next if $ndots < ($cdom =~ /[^.]{3}$/ ? 2 : 3); |
|
|
342 | |
|
|
343 | # store it |
|
|
344 | $arg{cookie_jar}{version} = 1; |
|
|
345 | $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv; |
|
|
346 | } |
425 | } |
|
|
426 | |
|
|
427 | substr $_, 0, 1, "" |
|
|
428 | for values %hdr; |
|
|
429 | |
|
|
430 | my $finish = sub { |
|
|
431 | $state{handle}->destroy; |
|
|
432 | %state = (); |
|
|
433 | |
|
|
434 | # set-cookie processing |
|
|
435 | if ($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], $_[1]); |
|
|
511 | } |
|
|
512 | }; |
|
|
513 | |
|
|
514 | if ($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 { |
|
|
556 | %state = (); |
|
|
557 | $cb->(undef, { Status => $2, Reason => $3, URL => $url }); |
347 | } |
558 | } |
348 | |
|
|
349 | if ($_[1]{Status} =~ /^x30[12]$/ && $recurse) { |
|
|
350 | # microsoft and other assholes don't give a shit for following standards, |
|
|
351 | # try to support a common form of broken Location header. |
|
|
352 | $_[1]{location} =~ s%^/%$scheme://$uhost:$uport/%; |
|
|
353 | |
|
|
354 | http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
|
|
355 | } else { |
|
|
356 | $cb->($_[0], $_[1]); |
|
|
357 | } |
|
|
358 | }; |
559 | }); |
359 | |
|
|
360 | if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { |
|
|
361 | $finish->(undef, \%hdr); |
|
|
362 | } else { |
560 | } else { |
363 | if (exists $hdr{"content-length"}) { |
561 | &$handle_actual_request; |
364 | $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { |
|
|
365 | # could cache persistent connection now |
|
|
366 | if ($hdr{connection} =~ /\bkeep-alive\b/i) { |
|
|
367 | # but we don't, due to misdesigns, this is annoyingly complex |
|
|
368 | }; |
|
|
369 | |
|
|
370 | $finish->($_[1], \%hdr); |
|
|
371 | }); |
|
|
372 | } else { |
|
|
373 | # too bad, need to read until we get an error or EOF, |
|
|
374 | # no way to detect winged data. |
|
|
375 | $_[0]->on_error (sub { |
|
|
376 | $finish->($_[0]{rbuf}, \%hdr); |
|
|
377 | }); |
|
|
378 | $_[0]->on_eof (undef); |
|
|
379 | $_[0]->on_read (sub { }); |
|
|
380 | } |
|
|
381 | } |
|
|
382 | }); |
562 | } |
|
|
563 | |
|
|
564 | }, sub { |
|
|
565 | $timeout |
383 | }); |
566 | }; |
384 | }, sub { |
|
|
385 | $timeout |
|
|
386 | }; |
567 | }; |
387 | |
568 | |
388 | defined wantarray && AnyEvent::Util::guard { %state = () } |
569 | defined wantarray && AnyEvent::Util::guard { %state = () } |
389 | } |
570 | } |
390 | |
571 | |
391 | sub http_get($$;@) { |
572 | sub http_get($@) { |
392 | unshift @_, "GET"; |
573 | unshift @_, "GET"; |
393 | &http_request |
574 | &http_request |
394 | } |
575 | } |
395 | |
576 | |
396 | sub http_head($$;@) { |
577 | sub http_head($@) { |
397 | unshift @_, "HEAD"; |
578 | unshift @_, "HEAD"; |
398 | &http_request |
579 | &http_request |
399 | } |
580 | } |
400 | |
581 | |
401 | sub http_post($$$;@) { |
582 | sub http_post($$@) { |
|
|
583 | my $url = shift; |
402 | unshift @_, "POST", "body"; |
584 | unshift @_, "POST", $url, "body"; |
403 | &http_request |
585 | &http_request |
404 | } |
586 | } |
405 | |
587 | |
406 | =back |
588 | =back |
407 | |
589 | |
… | |
… | |
432 | =item $AnyEvent::HTTP::PERSISTENT_TIMEOUT |
614 | =item $AnyEvent::HTTP::PERSISTENT_TIMEOUT |
433 | |
615 | |
434 | The maximum time to cache a persistent connection, in seconds (default: 2). |
616 | The maximum time to cache a persistent connection, in seconds (default: 2). |
435 | |
617 | |
436 | Not implemented currently. |
618 | Not implemented currently. |
|
|
619 | |
|
|
620 | =item $AnyEvent::HTTP::ACTIVE |
|
|
621 | |
|
|
622 | The number of active connections. This is not the number of currently |
|
|
623 | running requests, but the number of currently open and non-idle TCP |
|
|
624 | connections. This number of can be useful for load-leveling. |
437 | |
625 | |
438 | =back |
626 | =back |
439 | |
627 | |
440 | =cut |
628 | =cut |
441 | |
629 | |
… | |
… | |
450 | |
638 | |
451 | L<AnyEvent>. |
639 | L<AnyEvent>. |
452 | |
640 | |
453 | =head1 AUTHOR |
641 | =head1 AUTHOR |
454 | |
642 | |
455 | Marc Lehmann <schmorp@schmorp.de> |
643 | Marc Lehmann <schmorp@schmorp.de> |
456 | http://home.schmorp.de/ |
644 | http://home.schmorp.de/ |
|
|
645 | |
|
|
646 | With many thanks to Дмитрий Шалашов, who provided countless |
|
|
647 | testcases and bugreports. |
457 | |
648 | |
458 | =cut |
649 | =cut |
459 | |
650 | |
460 | 1 |
651 | 1 |
461 | |
652 | |