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41 | use strict; |
41 | use strict; |
42 | no warnings; |
42 | no warnings; |
43 | |
43 | |
44 | use Errno (); |
44 | use Errno (); |
45 | |
45 | |
46 | use AnyEvent 4.8 (); |
46 | use AnyEvent 5.0 (); |
47 | use AnyEvent::Util (); |
47 | use AnyEvent::Util (); |
48 | use AnyEvent::Socket (); |
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49 | use AnyEvent::Handle (); |
48 | use AnyEvent::Handle (); |
50 | |
49 | |
51 | use base Exporter::; |
50 | use base Exporter::; |
52 | |
51 | |
53 | our $VERSION = '1.41'; |
52 | our $VERSION = '1.5'; |
54 | |
53 | |
55 | our @EXPORT = qw(http_get http_post http_head http_request); |
54 | our @EXPORT = qw(http_get http_post http_head http_request); |
56 | |
55 | |
57 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
56 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
58 | our $MAX_RECURSE = 10; |
57 | our $MAX_RECURSE = 10; |
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92 | must be an absolute http or https URL. |
91 | must be an absolute http or https URL. |
93 | |
92 | |
94 | When called in void context, nothing is returned. In other contexts, |
93 | When called in void context, nothing is returned. In other contexts, |
95 | C<http_request> returns a "cancellation guard" - you have to keep the |
94 | C<http_request> returns a "cancellation guard" - you have to keep the |
96 | object at least alive until the callback get called. If the object gets |
95 | object at least alive until the callback get called. If the object gets |
97 | destroyed before the callbakc is called, the request will be cancelled. |
96 | destroyed before the callback is called, the request will be cancelled. |
98 | |
97 | |
99 | The callback will be called with the response body data as first argument |
98 | The callback will be called with the response body data as first argument |
100 | (or C<undef> if an error occured), and a hash-ref with response headers as |
99 | (or C<undef> if an error occured), and a hash-ref with response headers |
101 | second argument. |
100 | (and trailers) as second argument. |
102 | |
101 | |
103 | All the headers in that hash are lowercased. In addition to the response |
102 | All the headers in that hash are lowercased. In addition to the response |
104 | headers, the "pseudo-headers" C<HTTPVersion>, C<Status> and C<Reason> |
103 | headers, the "pseudo-headers" (uppercase to avoid clashing with possible |
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104 | response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the |
105 | contain the three parts of the HTTP Status-Line of the same name. The |
105 | three parts of the HTTP Status-Line of the same name. If an error occurs |
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106 | during the body phase of a request, then the original C<Status> and |
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107 | C<Reason> values from the header are available as C<OrigStatus> and |
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108 | C<OrigReason>. |
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109 | |
106 | pseudo-header C<URL> contains the original URL (which can differ from the |
110 | The pseudo-header C<URL> contains the actual URL (which can differ from |
107 | requested URL when following redirects). |
111 | the requested URL when following redirects - for example, you might get |
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112 | an error that your URL scheme is not supported even though your URL is a |
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113 | valid http URL because it redirected to an ftp URL, in which case you can |
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114 | look at the URL pseudo header). |
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115 | |
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116 | The pseudo-header C<Redirect> only exists when the request was a result |
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117 | of an internal redirect. In that case it is an array reference with |
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118 | the C<($data, $headers)> from the redirect response. Note that this |
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119 | response could in turn be the result of a redirect itself, and C<< |
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120 | $headers->{Redirect}[1]{Redirect} >> will then contain the original |
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121 | response, and so on. |
108 | |
122 | |
109 | If the server sends a header multiple times, then their contents will be |
123 | If the server sends a header multiple times, then their contents will be |
110 | joined together with a comma (C<,>), as per the HTTP spec. |
124 | joined together with a comma (C<,>), as per the HTTP spec. |
111 | |
125 | |
112 | If an internal error occurs, such as not being able to resolve a hostname, |
126 | If an internal error occurs, such as not being able to resolve a hostname, |
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136 | Whether to recurse requests or not, e.g. on redirects, authentication |
150 | Whether to recurse requests or not, e.g. on redirects, authentication |
137 | retries and so on, and how often to do so. |
151 | retries and so on, and how often to do so. |
138 | |
152 | |
139 | =item headers => hashref |
153 | =item headers => hashref |
140 | |
154 | |
141 | The request headers to use. Currently, C<http_request> may provide its |
155 | The request headers to use. Currently, C<http_request> may provide its own |
142 | own C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers |
156 | C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and |
143 | and will provide defaults for C<User-Agent:> and C<Referer:>. |
157 | will provide defaults at least for C<TE:>, C<Referer:> and C<User-Agent:> |
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158 | (this can be suppressed by using C<undef> for these headers in which case |
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159 | they won't be sent at all). |
144 | |
160 | |
145 | =item timeout => $seconds |
161 | =item timeout => $seconds |
146 | |
162 | |
147 | The time-out to use for various stages - each connect attempt will reset |
163 | The time-out to use for various stages - each connect attempt will reset |
148 | the timeout, as will read or write activity. Default timeout is 5 minutes. |
164 | the timeout, as will read or write activity, i.e. this is not an overall |
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165 | timeout. |
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166 | |
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167 | Default timeout is 5 minutes. |
149 | |
168 | |
150 | =item proxy => [$host, $port[, $scheme]] or undef |
169 | =item proxy => [$host, $port[, $scheme]] or undef |
151 | |
170 | |
152 | Use the given http proxy for all requests. If not specified, then the |
171 | Use the given http proxy for all requests. If not specified, then the |
153 | default proxy (as specified by C<$ENV{http_proxy}>) is used. |
172 | default proxy (as specified by C<$ENV{http_proxy}>) is used. |
154 | |
173 | |
155 | C<$scheme> must be either missing or C<http> for HTTP, or C<https> for |
174 | C<$scheme> must be either missing, C<http> for HTTP or C<https> for |
156 | HTTPS. |
175 | HTTPS. |
157 | |
176 | |
158 | =item body => $string |
177 | =item body => $string |
159 | |
178 | |
160 | The request body, usually empty. Will be-sent as-is (future versions of |
179 | The request body, usually empty. Will be sent as-is (future versions of |
161 | this module might offer more options). |
180 | this module might offer more options). |
162 | |
181 | |
163 | =item cookie_jar => $hash_ref |
182 | =item cookie_jar => $hash_ref |
164 | |
183 | |
165 | Passing this parameter enables (simplified) cookie-processing, loosely |
184 | Passing this parameter enables (simplified) cookie-processing, loosely |
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173 | Note that this cookie implementation is not of very high quality, nor |
192 | Note that this cookie implementation is not of very high quality, nor |
174 | meant to be complete. If you want complete cookie management you have to |
193 | meant to be complete. If you want complete cookie management you have to |
175 | do that on your own. C<cookie_jar> is meant as a quick fix to get some |
194 | do that on your own. C<cookie_jar> is meant as a quick fix to get some |
176 | cookie-using sites working. Cookies are a privacy disaster, do not use |
195 | cookie-using sites working. Cookies are a privacy disaster, do not use |
177 | them unless required to. |
196 | them unless required to. |
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197 | |
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198 | When cookie processing is enabled, the C<Cookie:> and C<Set-Cookie:> |
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199 | headers will be ste and handled by this module, otherwise they will be |
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200 | left untouched. |
178 | |
201 | |
179 | =item tls_ctx => $scheme | $tls_ctx |
202 | =item tls_ctx => $scheme | $tls_ctx |
180 | |
203 | |
181 | Specifies the AnyEvent::TLS context to be used for https connections. This |
204 | Specifies the AnyEvent::TLS context to be used for https connections. This |
182 | parameter follows the same rules as the C<tls_ctx> parameter to |
205 | parameter follows the same rules as the C<tls_ctx> parameter to |
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186 | verification) TLS context. |
209 | verification) TLS context. |
187 | |
210 | |
188 | The default for this option is C<low>, which could be interpreted as "give |
211 | The default for this option is C<low>, which could be interpreted as "give |
189 | me the page, no matter what". |
212 | me the page, no matter what". |
190 | |
213 | |
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214 | =item on_prepare => $callback->($fh) |
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215 | |
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216 | In rare cases you need to "tune" the socket before it is used to |
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217 | connect (for exmaple, to bind it on a given IP address). This parameter |
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218 | overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> |
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219 | and behaves exactly the same way (e.g. it has to provide a |
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220 | timeout). See the description for the C<$prepare_cb> argument of |
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221 | C<AnyEvent::Socket::tcp_connect> for details. |
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222 | |
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223 | =item tcp_connect => $callback->($host, $service, $connect_cb, $prepare_cb) |
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224 | |
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225 | In even rarer cases you want total control over how AnyEvent::HTTP |
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226 | establishes connections. Normally it uses L<AnyEvent::Socket::tcp_connect> |
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227 | to do this, but you can provide your own C<tcp_connect> function - |
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228 | obviously, it has to follow the same calling conventions, except that it |
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229 | may always return a connection guard object. |
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230 | |
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231 | There are probably lots of weird uses for this function, starting from |
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232 | tracing the hosts C<http_request> actually tries to connect, to (inexact |
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233 | but fast) host => IP address caching or even socks protocol support. |
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234 | |
191 | =item on_header => $callback->($headers) |
235 | =item on_header => $callback->($headers) |
192 | |
236 | |
193 | When specified, this callback will be called with the header hash as soon |
237 | When specified, this callback will be called with the header hash as soon |
194 | as headers have been successfully received from the remote server (not on |
238 | as headers have been successfully received from the remote server (not on |
195 | locally-generated errors). |
239 | locally-generated errors). |
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200 | |
244 | |
201 | This callback is useful, among other things, to quickly reject unwanted |
245 | This callback is useful, among other things, to quickly reject unwanted |
202 | content, which, if it is supposed to be rare, can be faster than first |
246 | content, which, if it is supposed to be rare, can be faster than first |
203 | doing a C<HEAD> request. |
247 | doing a C<HEAD> request. |
204 | |
248 | |
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249 | The downside is that cancelling the request makes it impossible to re-use |
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250 | the connection. Also, the C<on_header> callback will not receive any |
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251 | trailer (headers sent after the response body). |
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252 | |
205 | Example: cancel the request unless the content-type is "text/html". |
253 | Example: cancel the request unless the content-type is "text/html". |
206 | |
254 | |
207 | on_header => sub { |
255 | on_header => sub { |
208 | $_[0]{"content-type"} =~ /^text\/html\s*(?:;|$)/ |
256 | $_[0]{"content-type"} =~ /^text\/html\s*(?:;|$)/ |
209 | }, |
257 | }, |
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215 | string instead of the body data. |
263 | string instead of the body data. |
216 | |
264 | |
217 | It has to return either true (in which case AnyEvent::HTTP will continue), |
265 | It has to return either true (in which case AnyEvent::HTTP will continue), |
218 | or false, in which case AnyEvent::HTTP will cancel the download (and call |
266 | or false, in which case AnyEvent::HTTP will cancel the download (and call |
219 | the completion callback with an error code of C<598>). |
267 | the completion callback with an error code of C<598>). |
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268 | |
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269 | The downside to cancelling the request is that it makes it impossible to |
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270 | re-use the connection. |
220 | |
271 | |
221 | This callback is useful when the data is too large to be held in memory |
272 | This callback is useful when the data is too large to be held in memory |
222 | (so the callback writes it to a file) or when only some information should |
273 | (so the callback writes it to a file) or when only some information should |
223 | be extracted, or when the body should be processed incrementally. |
274 | be extracted, or when the body should be processed incrementally. |
224 | |
275 | |
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250 | If you think you need this, first have a look at C<on_body>, to see if |
301 | If you think you need this, first have a look at C<on_body>, to see if |
251 | that doesn't solve your problem in a better way. |
302 | that doesn't solve your problem in a better way. |
252 | |
303 | |
253 | =back |
304 | =back |
254 | |
305 | |
255 | Example: make a simple HTTP GET request for http://www.nethype.de/ |
306 | Example: do a simple HTTP GET request for http://www.nethype.de/ and print |
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307 | the response body. |
256 | |
308 | |
257 | http_request GET => "http://www.nethype.de/", sub { |
309 | http_request GET => "http://www.nethype.de/", sub { |
258 | my ($body, $hdr) = @_; |
310 | my ($body, $hdr) = @_; |
259 | print "$body\n"; |
311 | print "$body\n"; |
260 | }; |
312 | }; |
261 | |
313 | |
262 | Example: make a HTTP HEAD request on https://www.google.com/, use a |
314 | Example: do a HTTP HEAD request on https://www.google.com/, use a |
263 | timeout of 30 seconds. |
315 | timeout of 30 seconds. |
264 | |
316 | |
265 | http_request |
317 | http_request |
266 | GET => "https://www.google.com", |
318 | GET => "https://www.google.com", |
267 | timeout => 30, |
319 | timeout => 30, |
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270 | use Data::Dumper; |
322 | use Data::Dumper; |
271 | print Dumper $hdr; |
323 | print Dumper $hdr; |
272 | } |
324 | } |
273 | ; |
325 | ; |
274 | |
326 | |
275 | Example: make another simple HTTP GET request, but immediately try to |
327 | Example: do another simple HTTP GET request, but immediately try to |
276 | cancel it. |
328 | cancel it. |
277 | |
329 | |
278 | my $request = http_request GET => "http://www.nethype.de/", sub { |
330 | my $request = http_request GET => "http://www.nethype.de/", sub { |
279 | my ($body, $hdr) = @_; |
331 | my ($body, $hdr) = @_; |
280 | print "$body\n"; |
332 | print "$body\n"; |
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312 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
364 | push @{ $CO_SLOT{$_[0]}[1] }, $_[1]; |
313 | |
365 | |
314 | _slot_schedule $_[0]; |
366 | _slot_schedule $_[0]; |
315 | } |
367 | } |
316 | |
368 | |
317 | our $qr_nl = qr{\015?\012}; |
369 | # continue to parse $_ for headers and place them into the arg |
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370 | sub parse_hdr() { |
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371 | my %hdr; |
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372 | |
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373 | # things seen, not parsed: |
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374 | # p3pP="NON CUR OTPi OUR NOR UNI" |
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375 | |
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376 | $hdr{lc $1} .= ",$2" |
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377 | while /\G |
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378 | ([^:\000-\037]*): |
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379 | [\011\040]* |
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380 | ((?: [^\012]+ | \012[\011\040] )*) |
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381 | \012 |
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382 | /gxc; |
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383 | |
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384 | /\G$/ |
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385 | or return; |
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386 | |
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387 | # remove the "," prefix we added to all headers above |
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388 | substr $_, 0, 1, "" |
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389 | for values %hdr; |
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390 | |
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391 | \%hdr |
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392 | } |
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393 | |
318 | our $qr_nlnl = qr{(?<![^\012])\015?\012}; |
394 | our $qr_nlnl = qr{(?<![^\012])\015?\012}; |
319 | |
395 | |
320 | our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; |
396 | our $TLS_CTX_LOW = { cache => 1, sslv2 => 1 }; |
321 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; |
397 | our $TLS_CTX_HIGH = { cache => 1, verify => 1, verify_peername => "https" }; |
322 | |
398 | |
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335 | while (my ($k, $v) = each %$hdr) { |
411 | while (my ($k, $v) = each %$hdr) { |
336 | $hdr{lc $k} = $v; |
412 | $hdr{lc $k} = $v; |
337 | } |
413 | } |
338 | } |
414 | } |
339 | |
415 | |
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416 | # pseudo headers for all subsequent responses |
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417 | my @pseudo = (URL => $url); |
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418 | push @pseudo, Redirect => delete $arg{Redirect} if exists $arg{Redirect}; |
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419 | |
340 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
420 | my $recurse = exists $arg{recurse} ? delete $arg{recurse} : $MAX_RECURSE; |
341 | |
421 | |
342 | return $cb->(undef, { Status => 599, Reason => "Too many redirections", URL => $url }) |
422 | return $cb->(undef, { @pseudo, Status => 599, Reason => "Too many redirections" }) |
343 | if $recurse < 0; |
423 | if $recurse < 0; |
344 | |
424 | |
345 | my $proxy = $arg{proxy} || $PROXY; |
425 | my $proxy = $arg{proxy} || $PROXY; |
346 | my $timeout = $arg{timeout} || $TIMEOUT; |
426 | my $timeout = $arg{timeout} || $TIMEOUT; |
347 | |
427 | |
348 | my ($uscheme, $uauthority, $upath, $query, $fragment) = |
428 | my ($uscheme, $uauthority, $upath, $query, $fragment) = |
349 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
429 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:(\?[^#]*))?(?:#(.*))?|; |
350 | |
430 | |
351 | $uscheme = lc $uscheme; |
431 | $uscheme = lc $uscheme; |
352 | |
432 | |
353 | my $uport = $uscheme eq "http" ? 80 |
433 | my $uport = $uscheme eq "http" ? 80 |
354 | : $uscheme eq "https" ? 443 |
434 | : $uscheme eq "https" ? 443 |
355 | : return $cb->(undef, { Status => 599, Reason => "Only http and https URL schemes supported", URL => $url }); |
435 | : return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" }); |
356 | |
436 | |
357 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
437 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
358 | or return $cb->(undef, { Status => 599, Reason => "Unparsable URL", URL => $url }); |
438 | or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" }); |
359 | |
439 | |
360 | my $uhost = $1; |
440 | my $uhost = $1; |
361 | $uport = $2 if defined $2; |
441 | $uport = $2 if defined $2; |
362 | |
442 | |
363 | $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost"; |
443 | $hdr{host} = defined $2 ? "$uhost:$2" : "$uhost" |
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444 | unless exists $hdr{host}; |
364 | |
445 | |
365 | $uhost =~ s/^\[(.*)\]$/$1/; |
446 | $uhost =~ s/^\[(.*)\]$/$1/; |
366 | $upath .= "?$query" if length $query; |
447 | $upath .= $query if length $query; |
367 | |
448 | |
368 | $upath =~ s%^/?%/%; |
449 | $upath =~ s%^/?%/%; |
369 | |
450 | |
370 | # cookie processing |
451 | # cookie processing |
371 | if (my $jar = $arg{cookie_jar}) { |
452 | if (my $jar = $arg{cookie_jar}) { |
… | |
… | |
401 | my ($rhost, $rport, $rscheme, $rpath); # request host, port, path |
482 | my ($rhost, $rport, $rscheme, $rpath); # request host, port, path |
402 | |
483 | |
403 | if ($proxy) { |
484 | if ($proxy) { |
404 | ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy); |
485 | ($rpath, $rhost, $rport, $rscheme) = ($url, @$proxy); |
405 | |
486 | |
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487 | $rscheme = "http" unless defined $rscheme; |
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488 | |
406 | # don't support https requests over https-proxy transport, |
489 | # don't support https requests over https-proxy transport, |
407 | # can't be done with tls as spec'ed, unless you double-encrypt. |
490 | # can't be done with tls as spec'ed, unless you double-encrypt. |
408 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
491 | $rscheme = "http" if $uscheme eq "https" && $rscheme eq "https"; |
409 | } else { |
492 | } else { |
410 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
493 | ($rhost, $rport, $rscheme, $rpath) = ($uhost, $uport, $uscheme, $upath); |
411 | } |
494 | } |
412 | |
495 | |
413 | $hdr{"user-agent"} ||= $USERAGENT; |
496 | # leave out fragment and query string, just a heuristic |
414 | $hdr{referer} ||= "$uscheme://$uauthority$upath"; # leave out fragment and query string, just a heuristic |
497 | $hdr{referer} = "$uscheme://$uauthority$upath" unless exists $hdr{referer}; |
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498 | $hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"}; |
415 | |
499 | |
416 | $hdr{"content-length"} = length $arg{body}; |
500 | $hdr{"content-length"} = length $arg{body} |
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501 | if length $arg{body} || $method ne "GET"; |
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502 | |
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503 | $hdr{connection} = "close TE"; #1.1 |
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504 | $hdr{te} = "trailers" unless exists $hdr{te}; #1.1 |
417 | |
505 | |
418 | my %state = (connect_guard => 1); |
506 | my %state = (connect_guard => 1); |
419 | |
507 | |
420 | _get_slot $uhost, sub { |
508 | _get_slot $uhost, sub { |
421 | $state{slot_guard} = shift; |
509 | $state{slot_guard} = shift; |
422 | |
510 | |
423 | return unless $state{connect_guard}; |
511 | return unless $state{connect_guard}; |
424 | |
512 | |
425 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $rhost, $rport, sub { |
513 | my $connect_cb = sub { |
426 | $state{fh} = shift |
514 | $state{fh} = shift |
427 | or do { |
515 | or do { |
428 | my $err = "$!"; |
516 | my $err = "$!"; |
429 | %state = (); |
517 | %state = (); |
430 | return $cb->(undef, { Status => 599, Reason => $err, URL => $url }); |
518 | return $cb->(undef, { @pseudo, Status => 599, Reason => $err }); |
431 | }; |
519 | }; |
432 | |
520 | |
433 | pop; # free memory, save a tree |
521 | pop; # free memory, save a tree |
434 | |
522 | |
435 | return unless delete $state{connect_guard}; |
523 | return unless delete $state{connect_guard}; |
436 | |
524 | |
437 | # get handle |
525 | # get handle |
438 | $state{handle} = new AnyEvent::Handle |
526 | $state{handle} = new AnyEvent::Handle |
439 | fh => $state{fh}, |
527 | fh => $state{fh}, |
|
|
528 | peername => $rhost, |
|
|
529 | tls_ctx => $arg{tls_ctx}, |
|
|
530 | # these need to be reconfigured on keepalive handles |
440 | timeout => $timeout, |
531 | timeout => $timeout, |
441 | peername => $rhost, |
532 | on_error => sub { |
442 | tls_ctx => $arg{tls_ctx}; |
533 | %state = (); |
|
|
534 | $cb->(undef, { @pseudo, Status => 599, Reason => $_[2] }); |
|
|
535 | }, |
|
|
536 | on_eof => sub { |
|
|
537 | %state = (); |
|
|
538 | $cb->(undef, { @pseudo, Status => 599, Reason => "Unexpected end-of-file" }); |
|
|
539 | }, |
|
|
540 | ; |
443 | |
541 | |
444 | # limit the number of persistent connections |
542 | # limit the number of persistent connections |
445 | # keepalive not yet supported |
543 | # keepalive not yet supported |
446 | if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
544 | # if ($KA_COUNT{$_[1]} < $MAX_PERSISTENT_PER_HOST) { |
447 | ++$KA_COUNT{$_[1]}; |
545 | # ++$KA_COUNT{$_[1]}; |
448 | $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
546 | # $state{handle}{ka_count_guard} = AnyEvent::Util::guard { |
449 | --$KA_COUNT{$_[1]} |
547 | # --$KA_COUNT{$_[1]} |
450 | }; |
548 | # }; |
451 | $hdr{connection} = "keep-alive"; |
549 | # $hdr{connection} = "keep-alive"; |
452 | } else { |
|
|
453 | delete $hdr{connection}; |
|
|
454 | } |
550 | # } |
455 | |
|
|
456 | # (re-)configure handle |
|
|
457 | $state{handle}->on_error (sub { |
|
|
458 | %state = (); |
|
|
459 | $cb->(undef, { Status => 599, Reason => $_[2], URL => $url }); |
|
|
460 | }); |
|
|
461 | $state{handle}->on_eof (sub { |
|
|
462 | %state = (); |
|
|
463 | $cb->(undef, { Status => 599, Reason => "Unexpected end-of-file", URL => $url }); |
|
|
464 | }); |
|
|
465 | |
551 | |
466 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
552 | $state{handle}->starttls ("connect") if $rscheme eq "https"; |
467 | |
553 | |
468 | # handle actual, non-tunneled, request |
554 | # handle actual, non-tunneled, request |
469 | my $handle_actual_request = sub { |
555 | my $handle_actual_request = sub { |
470 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
556 | $state{handle}->starttls ("connect") if $uscheme eq "https" && !exists $state{handle}{tls}; |
471 | |
557 | |
472 | # send request |
558 | # send request |
473 | $state{handle}->push_write ( |
559 | $state{handle}->push_write ( |
474 | "$method $rpath HTTP/1.0\015\012" |
560 | "$method $rpath HTTP/1.1\015\012" |
475 | . (join "", map "\u$_: $hdr{$_}\015\012", keys %hdr) |
561 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
476 | . "\015\012" |
562 | . "\015\012" |
477 | . (delete $arg{body}) |
563 | . (delete $arg{body}) |
478 | ); |
564 | ); |
479 | |
565 | |
|
|
566 | # return if error occured during push_write() |
|
|
567 | return unless %state; |
|
|
568 | |
480 | %hdr = (); # reduce memory usage, save a kitten |
569 | %hdr = (); # reduce memory usage, save a kitten, also make it possible to re-use |
481 | |
570 | |
482 | # status line |
571 | # status line and headers |
483 | $state{handle}->push_read (line => $qr_nl, sub { |
572 | $state{read_response} = sub { |
484 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
|
|
485 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid server response ($_[1])", URL => $url })); |
|
|
486 | |
|
|
487 | my %hdr = ( # response headers |
|
|
488 | HTTPVersion => ",$1", |
|
|
489 | Status => ",$2", |
|
|
490 | Reason => ",$3", |
|
|
491 | URL => ",$url" |
|
|
492 | ); |
|
|
493 | |
|
|
494 | # headers, could be optimized a bit |
|
|
495 | $state{handle}->unshift_read (line => $qr_nlnl, sub { |
|
|
496 | for ("$_[1]") { |
573 | for ("$_[1]") { |
497 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
574 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
498 | |
575 | |
499 | # things seen, not parsed: |
576 | /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\012]*) )? \012/igxc |
500 | # p3pP="NON CUR OTPi OUR NOR UNI" |
577 | or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid server response" })); |
501 | |
578 | |
502 | $hdr{lc $1} .= ",$2" |
579 | # 100 Continue handling |
503 | while /\G |
580 | # should not happen as we don't send expect: 100-continue, |
504 | ([^:\000-\037]*): |
581 | # but we handle it just in case. |
505 | [\011\040]* |
582 | # since we send the request body regardless, if we get an error |
506 | ((?: [^\012]+ | \012[\011\040] )*) |
583 | # we are out of-sync, which we currently do NOT handle correctly. |
507 | \012 |
584 | return $state{handle}->push_read (line => $qr_nlnl, $state{read_response}) |
508 | /gxc; |
585 | if $2 eq 100; |
509 | |
586 | |
|
|
587 | push @pseudo, |
|
|
588 | HTTPVersion => $1, |
|
|
589 | Status => $2, |
|
|
590 | Reason => $3, |
510 | /\G$/ |
591 | ; |
|
|
592 | |
|
|
593 | my $hdr = parse_hdr |
511 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Garbled response headers", URL => $url })); |
594 | or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Garbled response headers" })); |
|
|
595 | |
|
|
596 | %hdr = (%$hdr, @pseudo); |
|
|
597 | } |
|
|
598 | |
|
|
599 | # redirect handling |
|
|
600 | # microsoft and other shitheads don't give a shit for following standards, |
|
|
601 | # try to support some common forms of broken Location headers. |
|
|
602 | if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
|
|
603 | $hdr{location} =~ s/^\.\/+//; |
|
|
604 | |
|
|
605 | my $url = "$rscheme://$uhost:$uport"; |
|
|
606 | |
|
|
607 | unless ($hdr{location} =~ s/^\///) { |
|
|
608 | $url .= $upath; |
|
|
609 | $url =~ s/\/[^\/]*$//; |
512 | } |
610 | } |
513 | |
611 | |
514 | substr $_, 0, 1, "" |
|
|
515 | for values %hdr; |
|
|
516 | |
|
|
517 | # redirect handling |
|
|
518 | # microsoft and other shitheads don't give a shit for following standards, |
|
|
519 | # try to support some common forms of broken Location headers. |
|
|
520 | if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
|
|
521 | $hdr{location} =~ s/^\.\/+//; |
|
|
522 | |
|
|
523 | my $url = "$rscheme://$uhost:$uport"; |
|
|
524 | |
|
|
525 | unless ($hdr{location} =~ s/^\///) { |
|
|
526 | $url .= $upath; |
|
|
527 | $url =~ s/\/[^\/]*$//; |
|
|
528 | } |
|
|
529 | |
|
|
530 | $hdr{location} = "$url/$hdr{location}"; |
612 | $hdr{location} = "$url/$hdr{location}"; |
|
|
613 | } |
|
|
614 | |
|
|
615 | my $redirect; |
|
|
616 | |
|
|
617 | if ($recurse) { |
|
|
618 | my $status = $hdr{Status}; |
|
|
619 | |
|
|
620 | # industry standard is to redirect POST as GET for |
|
|
621 | # 301, 302 and 303, in contrast to http/1.0 and 1.1. |
|
|
622 | # also, the UA should ask the user for 301 and 307 and POST, |
|
|
623 | # industry standard seems to be to simply follow. |
|
|
624 | # we go with the industry standard. |
|
|
625 | if ($status == 301 or $status == 302 or $status == 303) { |
|
|
626 | # HTTP/1.1 is unclear on how to mutate the method |
|
|
627 | $method = "GET" unless $method eq "HEAD"; |
|
|
628 | $redirect = 1; |
|
|
629 | } elsif ($status == 307) { |
|
|
630 | $redirect = 1; |
531 | } |
631 | } |
|
|
632 | } |
532 | |
633 | |
|
|
634 | my $finish = sub { # ($data, $err_status, $err_reason[, $keepalive]) |
533 | my $redirect; |
635 | my $keepalive = pop; |
534 | |
636 | |
|
|
637 | $state{handle}->destroy if $state{handle}; |
|
|
638 | %state = (); |
|
|
639 | |
|
|
640 | if (defined $_[1]) { |
|
|
641 | $hdr{OrigStatus} = $hdr{Status}; $hdr{Status} = $_[1]; |
|
|
642 | $hdr{OrigReason} = $hdr{Reason}; $hdr{Reason} = $_[2]; |
|
|
643 | } |
|
|
644 | |
|
|
645 | # set-cookie processing |
535 | if ($recurse) { |
646 | if ($arg{cookie_jar}) { |
536 | if ($hdr{Status} =~ /^30[12]$/ && $method ne "POST") { |
647 | for ($hdr{"set-cookie"}) { |
537 | # apparently, mozilla et al. just change POST to GET here |
648 | # parse NAME=VALUE |
538 | # more research is needed before we do the same |
649 | my @kv; |
|
|
650 | |
|
|
651 | while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) { |
539 | $redirect = 1; |
652 | my $name = $1; |
540 | } elsif ($hdr{Status} == 303) { |
653 | my $value = $3; |
541 | # even http/1.1 is unclear on how to mutate the method |
654 | |
542 | $method = "GET" unless $method eq "HEAD"; |
655 | unless ($value) { |
|
|
656 | $value = $2; |
|
|
657 | $value =~ s/\\(.)/$1/gs; |
|
|
658 | } |
|
|
659 | |
|
|
660 | push @kv, $name => $value; |
|
|
661 | |
|
|
662 | last unless /\G\s*;/gc; |
|
|
663 | } |
|
|
664 | |
|
|
665 | last unless @kv; |
|
|
666 | |
|
|
667 | my $name = shift @kv; |
|
|
668 | my %kv = (value => shift @kv, @kv); |
|
|
669 | |
|
|
670 | my $cdom; |
|
|
671 | my $cpath = (delete $kv{path}) || "/"; |
|
|
672 | |
|
|
673 | if (exists $kv{domain}) { |
|
|
674 | $cdom = delete $kv{domain}; |
|
|
675 | |
|
|
676 | $cdom =~ s/^\.?/./; # make sure it starts with a "." |
|
|
677 | |
|
|
678 | next if $cdom =~ /\.$/; |
|
|
679 | |
|
|
680 | # this is not rfc-like and not netscape-like. go figure. |
|
|
681 | my $ndots = $cdom =~ y/.//; |
|
|
682 | next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); |
|
|
683 | } else { |
|
|
684 | $cdom = $uhost; |
|
|
685 | } |
|
|
686 | |
543 | $redirect = 1; |
687 | # store it |
544 | } elsif ($hdr{Status} == 307 && $method =~ /^(?:GET|HEAD)$/) { |
688 | $arg{cookie_jar}{version} = 1; |
545 | $redirect = 1; |
689 | $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv; |
|
|
690 | |
|
|
691 | redo if /\G\s*,/gc; |
546 | } |
692 | } |
547 | } |
693 | } |
548 | |
694 | |
549 | my $finish = sub { |
695 | if ($redirect && exists $hdr{location}) { |
550 | $state{handle}->destroy if $state{handle}; |
|
|
551 | %state = (); |
|
|
552 | |
|
|
553 | # set-cookie processing |
|
|
554 | if ($arg{cookie_jar}) { |
|
|
555 | for ($_[1]{"set-cookie"}) { |
|
|
556 | # parse NAME=VALUE |
|
|
557 | my @kv; |
|
|
558 | |
|
|
559 | while (/\G\s* ([^=;,[:space:]]+) \s*=\s* (?: "((?:[^\\"]+|\\.)*)" | ([^=;,[:space:]]*) )/gcxs) { |
|
|
560 | my $name = $1; |
|
|
561 | my $value = $3; |
|
|
562 | |
|
|
563 | unless ($value) { |
|
|
564 | $value = $2; |
|
|
565 | $value =~ s/\\(.)/$1/gs; |
|
|
566 | } |
|
|
567 | |
|
|
568 | push @kv, $name => $value; |
|
|
569 | |
|
|
570 | last unless /\G\s*;/gc; |
|
|
571 | } |
|
|
572 | |
|
|
573 | last unless @kv; |
|
|
574 | |
|
|
575 | my $name = shift @kv; |
|
|
576 | my %kv = (value => shift @kv, @kv); |
|
|
577 | |
|
|
578 | my $cdom; |
|
|
579 | my $cpath = (delete $kv{path}) || "/"; |
|
|
580 | |
|
|
581 | if (exists $kv{domain}) { |
|
|
582 | $cdom = delete $kv{domain}; |
|
|
583 | |
|
|
584 | $cdom =~ s/^\.?/./; # make sure it starts with a "." |
|
|
585 | |
|
|
586 | next if $cdom =~ /\.$/; |
|
|
587 | |
|
|
588 | # this is not rfc-like and not netscape-like. go figure. |
|
|
589 | my $ndots = $cdom =~ y/.//; |
|
|
590 | next if $ndots < ($cdom =~ /\.[^.][^.]\.[^.][^.]$/ ? 3 : 2); |
|
|
591 | } else { |
|
|
592 | $cdom = $uhost; |
|
|
593 | } |
|
|
594 | |
|
|
595 | # store it |
|
|
596 | $arg{cookie_jar}{version} = 1; |
|
|
597 | $arg{cookie_jar}{$cdom}{$cpath}{$name} = \%kv; |
|
|
598 | |
|
|
599 | redo if /\G\s*,/gc; |
|
|
600 | } |
|
|
601 | } |
|
|
602 | |
|
|
603 | if ($redirect) { |
|
|
604 | # we ignore any errors, as it is very common to receive |
696 | # we ignore any errors, as it is very common to receive |
605 | # Content-Length != 0 but no actual body |
697 | # Content-Length != 0 but no actual body |
606 | # we also access %hdr, as $_[1] might be an erro |
698 | # we also access %hdr, as $_[1] might be an erro |
607 | http_request ($method => $hdr{location}, %arg, recurse => $recurse - 1, $cb); |
699 | http_request ( |
608 | } else { |
700 | $method => $hdr{location}, |
609 | $cb->($_[0], $_[1]); |
|
|
610 | } |
701 | %arg, |
|
|
702 | recurse => $recurse - 1, |
|
|
703 | Redirect => [$_[0], \%hdr], |
611 | }; |
704 | $cb); |
612 | |
|
|
613 | my $len = $hdr{"content-length"}; |
|
|
614 | |
|
|
615 | if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { |
|
|
616 | $finish->(undef, { Status => 598, Reason => "Request cancelled by on_header", URL => $url }); |
|
|
617 | } elsif ( |
|
|
618 | $hdr{Status} =~ /^(?:1..|[23]04)$/ |
|
|
619 | or $method eq "HEAD" |
|
|
620 | or (defined $len && !$len) |
|
|
621 | ) { |
|
|
622 | # no body |
|
|
623 | $finish->("", \%hdr); |
|
|
624 | } else { |
705 | } else { |
|
|
706 | $cb->($_[0], \%hdr); |
|
|
707 | } |
|
|
708 | }; |
|
|
709 | |
|
|
710 | my $len = $hdr{"content-length"}; |
|
|
711 | |
|
|
712 | if (!$redirect && $arg{on_header} && !$arg{on_header}(\%hdr)) { |
|
|
713 | $finish->(undef, 598 => "Request cancelled by on_header"); |
|
|
714 | } elsif ( |
|
|
715 | $hdr{Status} =~ /^(?:1..|204|205|304)$/ |
|
|
716 | or $method eq "HEAD" |
|
|
717 | or (defined $len && !$len) |
|
|
718 | ) { |
|
|
719 | # no body |
|
|
720 | $finish->("", undef, undef, 1); |
|
|
721 | } else { |
625 | # body handling, four different code paths |
722 | # body handling, many different code paths |
626 | # for want_body_handle, on_body (2x), normal (2x) |
723 | # - no body expected |
627 | # we might read too much here, but it does not matter yet (no pers. connections) |
724 | # - want_body_handle |
|
|
725 | # - te chunked |
|
|
726 | # - 2x length known (with or without on_body) |
|
|
727 | # - 2x length not known (with or without on_body) |
628 | if (!$redirect && $arg{want_body_handle}) { |
728 | if (!$redirect && $arg{want_body_handle}) { |
629 | $_[0]->on_eof (undef); |
729 | $_[0]->on_eof (undef); |
630 | $_[0]->on_error (undef); |
730 | $_[0]->on_error (undef); |
631 | $_[0]->on_read (undef); |
731 | $_[0]->on_read (undef); |
632 | |
732 | |
633 | $finish->(delete $state{handle}, \%hdr); |
733 | $finish->(delete $state{handle}); |
634 | |
734 | |
635 | } elsif ($arg{on_body}) { |
735 | } elsif ($hdr{"transfer-encoding"} =~ /\bchunked\b/i) { |
|
|
736 | my $cl = 0; |
|
|
737 | my $body = undef; |
|
|
738 | my $on_body = $arg{on_body} || sub { $body .= shift; 1 }; |
|
|
739 | |
636 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) }); |
740 | $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) }); |
|
|
741 | |
|
|
742 | my $read_chunk; $read_chunk = sub { |
|
|
743 | $_[1] =~ /^([0-9a-fA-F]+)/ |
|
|
744 | or $finish->(undef, 599 => "Garbled chunked transfer encoding"); |
|
|
745 | |
|
|
746 | my $len = hex $1; |
|
|
747 | |
637 | if ($len) { |
748 | if ($len) { |
638 | $_[0]->on_eof (undef); |
749 | $cl += $len; |
|
|
750 | |
|
|
751 | $_[0]->push_read (chunk => $len, sub { |
|
|
752 | $on_body->($_[1], \%hdr) |
|
|
753 | or return $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
754 | |
639 | $_[0]->on_read (sub { |
755 | $_[0]->push_read (line => sub { |
640 | $len -= length $_[0]{rbuf}; |
756 | length $_[1] |
641 | |
757 | and return $finish->(undef, 599 => "Garbled chunked transfer encoding"); |
642 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
758 | $_[0]->push_read (line => $read_chunk); |
643 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url }); |
|
|
644 | |
|
|
645 | $len > 0 |
759 | }); |
646 | or $finish->("", \%hdr); |
|
|
647 | }); |
760 | }); |
648 | } else { |
761 | } else { |
649 | $_[0]->on_eof (sub { |
762 | $hdr{"content-length"} ||= $cl; |
650 | $finish->("", \%hdr); |
763 | |
|
|
764 | $_[0]->push_read (line => $qr_nlnl, sub { |
|
|
765 | if (length $_[1]) { |
|
|
766 | for ("$_[1]") { |
|
|
767 | y/\015//d; # weed out any \015, as they show up in the weirdest of places. |
|
|
768 | |
|
|
769 | my $hdr = parse_hdr |
|
|
770 | or return $finish->(undef, 599 => "Garbled response trailers"); |
|
|
771 | |
|
|
772 | %hdr = (%hdr, %$hdr); |
|
|
773 | } |
651 | }); |
774 | } |
652 | $_[0]->on_read (sub { |
775 | |
653 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
776 | $finish->($body, undef, undef, 1); |
654 | or $finish->(undef, { Status => 598, Reason => "Request cancelled by on_body", URL => $url }); |
|
|
655 | }); |
777 | }); |
656 | } |
778 | } |
|
|
779 | }; |
|
|
780 | |
|
|
781 | $_[0]->push_read (line => $read_chunk); |
|
|
782 | |
|
|
783 | } elsif ($arg{on_body}) { |
|
|
784 | $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) }); |
|
|
785 | |
|
|
786 | if ($len) { |
|
|
787 | $_[0]->on_read (sub { |
|
|
788 | $len -= length $_[0]{rbuf}; |
|
|
789 | |
|
|
790 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
791 | or return $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
792 | |
|
|
793 | $len > 0 |
|
|
794 | or $finish->("", undef, undef, 1); |
|
|
795 | }); |
657 | } else { |
796 | } else { |
658 | $_[0]->on_eof (undef); |
797 | $_[0]->on_eof (sub { |
659 | |
798 | $finish->(""); |
660 | if ($len) { |
799 | }); |
661 | $_[0]->on_error (sub { $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }) }); |
|
|
662 | $_[0]->on_read (sub { |
800 | $_[0]->on_read (sub { |
|
|
801 | $arg{on_body}(delete $_[0]{rbuf}, \%hdr) |
|
|
802 | or $finish->(undef, 598 => "Request cancelled by on_body"); |
|
|
803 | }); |
|
|
804 | } |
|
|
805 | } else { |
|
|
806 | $_[0]->on_eof (undef); |
|
|
807 | |
|
|
808 | if ($len) { |
|
|
809 | $_[0]->on_error (sub { $finish->(undef, 599 => $_[2]) }); |
|
|
810 | $_[0]->on_read (sub { |
663 | $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), \%hdr) |
811 | $finish->((substr delete $_[0]{rbuf}, 0, $len, ""), undef, undef, 1) |
664 | if $len <= length $_[0]{rbuf}; |
812 | if $len <= length $_[0]{rbuf}; |
665 | }); |
813 | }); |
666 | } else { |
814 | } else { |
667 | $_[0]->on_error (sub { |
815 | $_[0]->on_error (sub { |
668 | $! == Errno::EPIPE || !$! |
816 | ($! == Errno::EPIPE || !$!) |
669 | ? $finish->(delete $_[0]{rbuf}, \%hdr) |
817 | ? $finish->(delete $_[0]{rbuf}) |
670 | : $finish->(undef, { Status => 599, Reason => $_[2], URL => $url }); |
818 | : $finish->(undef, 599 => $_[2]); |
671 | }); |
819 | }); |
672 | $_[0]->on_read (sub { }); |
820 | $_[0]->on_read (sub { }); |
673 | } |
|
|
674 | } |
821 | } |
675 | } |
822 | } |
676 | }); |
823 | } |
677 | }); |
824 | }; |
|
|
825 | |
|
|
826 | $state{handle}->push_read (line => $qr_nlnl, $state{read_response}); |
678 | }; |
827 | }; |
679 | |
828 | |
680 | # now handle proxy-CONNECT method |
829 | # now handle proxy-CONNECT method |
681 | if ($proxy && $uscheme eq "https") { |
830 | if ($proxy && $uscheme eq "https") { |
682 | # oh dear, we have to wrap it into a connect request |
831 | # oh dear, we have to wrap it into a connect request |
683 | |
832 | |
684 | # maybe re-use $uauthority with patched port? |
833 | # maybe re-use $uauthority with patched port? |
685 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
834 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012Host: $uhost\015\012\015\012"); |
686 | $state{handle}->push_read (line => $qr_nlnl, sub { |
835 | $state{handle}->push_read (line => $qr_nlnl, sub { |
687 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
836 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
688 | or return (%state = (), $cb->(undef, { Status => 599, Reason => "Invalid proxy connect response ($_[1])", URL => $url })); |
837 | or return (%state = (), $cb->(undef, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" })); |
689 | |
838 | |
690 | if ($2 == 200) { |
839 | if ($2 == 200) { |
691 | $rpath = $upath; |
840 | $rpath = $upath; |
692 | &$handle_actual_request; |
841 | &$handle_actual_request; |
693 | } else { |
842 | } else { |
694 | %state = (); |
843 | %state = (); |
695 | $cb->(undef, { Status => $2, Reason => $3, URL => $url }); |
844 | $cb->(undef, { @pseudo, Status => $2, Reason => $3 }); |
696 | } |
845 | } |
697 | }); |
846 | }); |
698 | } else { |
847 | } else { |
699 | &$handle_actual_request; |
848 | &$handle_actual_request; |
700 | } |
849 | } |
701 | |
|
|
702 | }, sub { |
|
|
703 | $timeout |
|
|
704 | }; |
850 | }; |
|
|
851 | |
|
|
852 | my $tcp_connect = $arg{tcp_connect} |
|
|
853 | || do { require AnyEvent::Socket; \&AnyEvent::Socket::tcp_connect }; |
|
|
854 | |
|
|
855 | $state{connect_guard} = $tcp_connect->($rhost, $rport, $connect_cb, $arg{on_prepare} || sub { $timeout }); |
|
|
856 | |
705 | }; |
857 | }; |
706 | |
858 | |
707 | defined wantarray && AnyEvent::Util::guard { %state = () } |
859 | defined wantarray && AnyEvent::Util::guard { %state = () } |
708 | } |
860 | } |
709 | |
861 | |
… | |
… | |
723 | &http_request |
875 | &http_request |
724 | } |
876 | } |
725 | |
877 | |
726 | =back |
878 | =back |
727 | |
879 | |
|
|
880 | =head2 DNS CACHING |
|
|
881 | |
|
|
882 | AnyEvent::HTTP uses the AnyEvent::Socket::tcp_connect function for |
|
|
883 | the actual connection, which in turn uses AnyEvent::DNS to resolve |
|
|
884 | hostnames. The latter is a simple stub resolver and does no caching |
|
|
885 | on its own. If you want DNS caching, you currently have to provide |
|
|
886 | your own default resolver (by storing a suitable resolver object in |
|
|
887 | C<$AnyEvent::DNS::RESOLVER>). |
|
|
888 | |
728 | =head2 GLOBAL FUNCTIONS AND VARIABLES |
889 | =head2 GLOBAL FUNCTIONS AND VARIABLES |
729 | |
890 | |
730 | =over 4 |
891 | =over 4 |
731 | |
892 | |
732 | =item AnyEvent::HTTP::set_proxy "proxy-url" |
893 | =item AnyEvent::HTTP::set_proxy "proxy-url" |
733 | |
894 | |
734 | Sets the default proxy server to use. The proxy-url must begin with a |
895 | Sets the default proxy server to use. The proxy-url must begin with a |
735 | string of the form C<http://host:port> (optionally C<https:...>). |
896 | string of the form C<http://host:port> (optionally C<https:...>), croaks |
|
|
897 | otherwise. |
|
|
898 | |
|
|
899 | To clear an already-set proxy, use C<undef>. |
|
|
900 | |
|
|
901 | =item $date = AnyEvent::HTTP::format_date $timestamp |
|
|
902 | |
|
|
903 | Takes a POSIX timestamp (seconds since the epoch) and formats it as a HTTP |
|
|
904 | Date (RFC 2616). |
|
|
905 | |
|
|
906 | =item $timestamp = AnyEvent::HTTP::parse_date $date |
|
|
907 | |
|
|
908 | Takes a HTTP Date (RFC 2616) and returns the corresponding POSIX |
|
|
909 | timestamp, or C<undef> if the date cannot be parsed. |
736 | |
910 | |
737 | =item $AnyEvent::HTTP::MAX_RECURSE |
911 | =item $AnyEvent::HTTP::MAX_RECURSE |
738 | |
912 | |
739 | The default value for the C<recurse> request parameter (default: C<10>). |
913 | The default value for the C<recurse> request parameter (default: C<10>). |
740 | |
914 | |
… | |
… | |
743 | The default value for the C<User-Agent> header (the default is |
917 | The default value for the C<User-Agent> header (the default is |
744 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
918 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
745 | |
919 | |
746 | =item $AnyEvent::HTTP::MAX_PER_HOST |
920 | =item $AnyEvent::HTTP::MAX_PER_HOST |
747 | |
921 | |
748 | The maximum number of concurrent conenctions to the same host (identified |
922 | The maximum number of concurrent connections to the same host (identified |
749 | by the hostname). If the limit is exceeded, then the additional requests |
923 | by the hostname). If the limit is exceeded, then the additional requests |
750 | are queued until previous connections are closed. |
924 | are queued until previous connections are closed. |
751 | |
925 | |
752 | The default value for this is C<4>, and it is highly advisable to not |
926 | The default value for this is C<4>, and it is highly advisable to not |
753 | increase it. |
927 | increase it. |
… | |
… | |
760 | |
934 | |
761 | =back |
935 | =back |
762 | |
936 | |
763 | =cut |
937 | =cut |
764 | |
938 | |
|
|
939 | our @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec); |
|
|
940 | our @weekday = qw(Sun Mon Tue Wed Thu Fri Sat); |
|
|
941 | |
|
|
942 | sub format_date($) { |
|
|
943 | my ($time) = @_; |
|
|
944 | |
|
|
945 | # RFC 822/1123 format |
|
|
946 | my ($S, $M, $H, $mday, $mon, $year, $wday, $yday, undef) = gmtime $time; |
|
|
947 | |
|
|
948 | sprintf "%s, %02d %s %04d %02d:%02d:%02d GMT", |
|
|
949 | $weekday[$wday], $mday, $month[$mon], $year + 1900, |
|
|
950 | $H, $M, $S; |
|
|
951 | } |
|
|
952 | |
|
|
953 | sub parse_date($) { |
|
|
954 | my ($date) = @_; |
|
|
955 | |
|
|
956 | my ($d, $m, $y, $H, $M, $S); |
|
|
957 | |
|
|
958 | if ($date =~ /^[A-Z][a-z][a-z], ([0-9][0-9]) ([A-Z][a-z][a-z]) ([0-9][0-9][0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) { |
|
|
959 | # RFC 822/1123, required by RFC 2616 |
|
|
960 | ($d, $m, $y, $H, $M, $S) = ($1, $2, $3, $4, $5, $6); |
|
|
961 | |
|
|
962 | } elsif ($date =~ /^[A-Z][a-z]+, ([0-9][0-9])-([A-Z][a-z][a-z])-([0-9][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) GMT$/) { |
|
|
963 | # RFC 850 |
|
|
964 | ($d, $m, $y, $H, $M, $S) = ($1, $2, $3 < 69 ? $3 + 2000 : $3 + 1900, $4, $5, $6); |
|
|
965 | |
|
|
966 | } elsif ($date =~ /^[A-Z][a-z][a-z] ([A-Z][a-z][a-z]) ([0-9 ][0-9]) ([0-9][0-9]):([0-9][0-9]):([0-9][0-9]) ([0-9][0-9][0-9][0-9])$/) { |
|
|
967 | # ISO C's asctime |
|
|
968 | ($d, $m, $y, $H, $M, $S) = ($2, $1, $6, $3, $4, $5); |
|
|
969 | } |
|
|
970 | # other formats fail in the loop below |
|
|
971 | |
|
|
972 | for (0..11) { |
|
|
973 | if ($m eq $month[$_]) { |
|
|
974 | require Time::Local; |
|
|
975 | return Time::Local::timegm ($S, $M, $H, $d, $_, $y); |
|
|
976 | } |
|
|
977 | } |
|
|
978 | |
|
|
979 | undef |
|
|
980 | } |
|
|
981 | |
765 | sub set_proxy($) { |
982 | sub set_proxy($) { |
|
|
983 | if (length $_[0]) { |
766 | $PROXY = [$2, $3 || 3128, $1] if $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix; |
984 | $_[0] =~ m%^(https?):// ([^:/]+) (?: : (\d*) )?%ix |
|
|
985 | or Carp::croak "$_[0]: invalid proxy URL"; |
|
|
986 | $PROXY = [$2, $3 || 3128, $1] |
|
|
987 | } else { |
|
|
988 | undef $PROXY; |
|
|
989 | } |
767 | } |
990 | } |
768 | |
991 | |
769 | # initialise proxy from environment |
992 | # initialise proxy from environment |
|
|
993 | eval { |
770 | set_proxy $ENV{http_proxy}; |
994 | set_proxy $ENV{http_proxy}; |
|
|
995 | }; |
|
|
996 | |
|
|
997 | =head2 SOCKS PROXIES |
|
|
998 | |
|
|
999 | Socks proxies are not directly supported by AnyEvent::HTTP. You can |
|
|
1000 | compile your perl to support socks, or use an external program such as |
|
|
1001 | F<socksify> (dante) or F<tsocks> to make your program use a socks proxy |
|
|
1002 | transparently. |
|
|
1003 | |
|
|
1004 | Alternatively, for AnyEvent::HTTP only, you can use your own |
|
|
1005 | C<tcp_connect> function that does the proxy handshake - here is an example |
|
|
1006 | that works with socks4a proxies: |
|
|
1007 | |
|
|
1008 | use Errno; |
|
|
1009 | use AnyEvent::Util; |
|
|
1010 | use AnyEvent::Socket; |
|
|
1011 | use AnyEvent::Handle; |
|
|
1012 | |
|
|
1013 | # host, port and username of/for your socks4a proxy |
|
|
1014 | my $socks_host = "10.0.0.23"; |
|
|
1015 | my $socks_port = 9050; |
|
|
1016 | my $socks_user = ""; |
|
|
1017 | |
|
|
1018 | sub socks4a_connect { |
|
|
1019 | my ($host, $port, $connect_cb, $prepare_cb) = @_; |
|
|
1020 | |
|
|
1021 | my $hdl = new AnyEvent::Handle |
|
|
1022 | connect => [$socks_host, $socks_port], |
|
|
1023 | on_prepare => sub { $prepare_cb->($_[0]{fh}) }, |
|
|
1024 | on_error => sub { $connect_cb->() }, |
|
|
1025 | ; |
|
|
1026 | |
|
|
1027 | $hdl->push_write (pack "CCnNZ*Z*", 4, 1, $port, 1, $socks_user, $host); |
|
|
1028 | |
|
|
1029 | $hdl->push_read (chunk => 8, sub { |
|
|
1030 | my ($hdl, $chunk) = @_; |
|
|
1031 | my ($status, $port, $ipn) = unpack "xCna4", $chunk; |
|
|
1032 | |
|
|
1033 | if ($status == 0x5a) { |
|
|
1034 | $connect_cb->($hdl->{fh}, (format_address $ipn) . ":$port"); |
|
|
1035 | } else { |
|
|
1036 | $! = Errno::ENXIO; $connect_cb->(); |
|
|
1037 | } |
|
|
1038 | }); |
|
|
1039 | |
|
|
1040 | $hdl |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | Use C<socks4a_connect> instead of C<tcp_connect> when doing C<http_request>s, |
|
|
1044 | possibly after switching off other proxy types: |
|
|
1045 | |
|
|
1046 | AnyEvent::HTTP::set_proxy undef; # usually you do not want other proxies |
|
|
1047 | |
|
|
1048 | http_get 'http://www.google.com', tcp_connect => \&socks4a_connect, sub { |
|
|
1049 | my ($data, $headers) = @_; |
|
|
1050 | ... |
|
|
1051 | }; |
771 | |
1052 | |
772 | =head1 SEE ALSO |
1053 | =head1 SEE ALSO |
773 | |
1054 | |
774 | L<AnyEvent>. |
1055 | L<AnyEvent>. |
775 | |
1056 | |