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59 | Executes an HTTP-HEAD request. See the http_request function for details on |
59 | Executes an HTTP-HEAD request. See the http_request function for details on |
60 | additional parameters. |
60 | additional parameters. |
61 | |
61 | |
62 | =item http_post $url, $body, key => value..., $cb->($data, $headers) |
62 | =item http_post $url, $body, key => value..., $cb->($data, $headers) |
63 | |
63 | |
64 | Executes an HTTP-POST request with a requets body of C<$bod>. See the |
64 | Executes an HTTP-POST request with a request body of C<$bod>. See the |
65 | http_request function for details on additional parameters. |
65 | http_request function for details on additional parameters. |
66 | |
66 | |
67 | =item http_request $method => $url, key => value..., $cb->($data, $headers) |
67 | =item http_request $method => $url, key => value..., $cb->($data, $headers) |
68 | |
68 | |
69 | Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL |
69 | Executes a HTTP request of type C<$method> (e.g. C<GET>, C<POST>). The URL |
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71 | |
71 | |
72 | The callback will be called with the response data as first argument |
72 | 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 |
73 | (or C<undef> if it wasn't available due to errors), and a hash-ref with |
74 | response headers as second argument. |
74 | response headers as second argument. |
75 | |
75 | |
76 | All the headers in that has are lowercased. In addition to the response |
76 | All the headers in that hash are lowercased. In addition to the response |
77 | headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and |
77 | headers, the three "pseudo-headers" C<HTTPVersion>, C<Status> and |
78 | C<Reason> contain the three parts of the HTTP Status-Line of the same |
78 | C<Reason> contain the three parts of the HTTP Status-Line of the same |
79 | name. |
79 | name. |
80 | |
80 | |
81 | If an internal error occurs, such as not being able to resolve a hostname, |
81 | If an internal error occurs, such as not being able to resolve a hostname, |
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138 | |
138 | |
139 | my %hdr; |
139 | my %hdr; |
140 | |
140 | |
141 | $method = uc $method; |
141 | $method = uc $method; |
142 | |
142 | |
143 | if (my $hdr = delete $arg{headers}) { |
143 | if (my $hdr = $arg{headers}) { |
144 | while (my ($k, $v) = each %$hdr) { |
144 | while (my ($k, $v) = each %$hdr) { |
145 | $hdr{lc $k} = $v; |
145 | $hdr{lc $k} = $v; |
146 | } |
146 | } |
147 | } |
147 | } |
148 | |
148 | |
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149 | my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; |
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150 | |
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151 | return $cb->(undef, { Status => 599, Reason => "recursion limit reached" }) |
|
|
152 | if $recurse < 0; |
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153 | |
149 | my $proxy = $arg{proxy} || $PROXY; |
154 | my $proxy = $arg{proxy} || $PROXY; |
150 | my $timeout = $arg{timeout} || $TIMEOUT; |
155 | my $timeout = $arg{timeout} || $TIMEOUT; |
151 | my $recurse = exists $arg{recurse} ? $arg{recurse} : $MAX_RECURSE; |
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|
152 | |
156 | |
153 | $hdr{"user-agent"} ||= $USERAGENT; |
157 | $hdr{"user-agent"} ||= $USERAGENT; |
154 | |
158 | |
155 | my ($host, $port, $path, $scheme); |
159 | my ($host, $port, $path, $scheme); |
156 | |
160 | |
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161 | ($scheme, my $authority, $path, my $query, my $fragment) = |
165 | ($scheme, my $authority, $path, my $query, my $fragment) = |
162 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
166 | $url =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|; |
163 | |
167 | |
164 | $port = $scheme eq "http" ? 80 |
168 | $port = $scheme eq "http" ? 80 |
165 | : $scheme eq "https" ? 443 |
169 | : $scheme eq "https" ? 443 |
166 | : croak "$url: only http and https URLs supported"; |
170 | : return $cb->(undef, { Status => 599, Reason => "$url: only http and https URLs supported" }); |
167 | |
171 | |
168 | $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
172 | $authority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
169 | or croak "$authority: unparsable URL"; |
173 | or return $cb->(undef, { Status => 599, Reason => "$url: unparsable URL" }); |
170 | |
174 | |
171 | $host = $1; |
175 | $host = $1; |
172 | $port = $2 if defined $2; |
176 | $port = $2 if defined $2; |
173 | |
177 | |
174 | $host =~ s/^\[(.*)\]$/$1/; |
178 | $host =~ s/^\[(.*)\]$/$1/; |
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181 | |
185 | |
182 | $scheme = lc $scheme; |
186 | $scheme = lc $scheme; |
183 | |
187 | |
184 | my %state; |
188 | my %state; |
185 | |
189 | |
186 | $state{body} = delete $arg{body}; |
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187 | |
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188 | $hdr{"content-length"} = length $state{body}; |
190 | $hdr{"content-length"} = length $arg{body}; |
189 | |
191 | |
190 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub { |
192 | $state{connect_guard} = AnyEvent::Socket::tcp_connect $host, $port, sub { |
191 | $state{fh} = shift |
193 | $state{fh} = shift |
192 | or return $cb->(undef, { Status => 599, Reason => "$!" }); |
194 | or return $cb->(undef, { Status => 599, Reason => "$!" }); |
193 | |
195 | |
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222 | # send request |
224 | # send request |
223 | $state{handle}->push_write ( |
225 | $state{handle}->push_write ( |
224 | "$method $path HTTP/1.0\015\012" |
226 | "$method $path HTTP/1.0\015\012" |
225 | . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) |
227 | . (join "", map "$_: $hdr{$_}\015\012", keys %hdr) |
226 | . "\015\012" |
228 | . "\015\012" |
227 | . (delete $state{body}) |
229 | . (delete $arg{body}) |
228 | ); |
230 | ); |
229 | |
231 | |
230 | %hdr = (); # reduce memory usage, save a kitten |
232 | %hdr = (); # reduce memory usage, save a kitten |
231 | |
233 | |
232 | # status line |
234 | # status line |
… | |
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258 | } |
260 | } |
259 | |
261 | |
260 | substr $_, 0, 1, "" |
262 | substr $_, 0, 1, "" |
261 | for values %hdr; |
263 | for values %hdr; |
262 | |
264 | |
263 | if ($method eq "HEAD") { |
265 | my $finish = sub { |
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|
266 | if ($_[1]{Status} =~ /^30[12]$/ && $recurse) { |
|
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267 | http_request ($method, $_[1]{location}, %arg, recurse => $recurse - 1, $cb); |
|
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268 | } else { |
|
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269 | $cb->($_[0], $_[1]); |
|
|
270 | } |
|
|
271 | }; |
|
|
272 | |
|
|
273 | if ($hdr{Status} =~ /^(?:1..|204|304)$/ or $method eq "HEAD") { |
264 | %state = (); |
274 | %state = (); |
265 | $cb->(undef, \%hdr); |
275 | $finish->(undef, \%hdr); |
266 | } else { |
276 | } else { |
267 | if (exists $hdr{"content-length"}) { |
277 | if (exists $hdr{"content-length"}) { |
268 | $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { |
278 | $_[0]->unshift_read (chunk => $hdr{"content-length"}, sub { |
269 | # could cache persistent connection now |
279 | # could cache persistent connection now |
270 | if ($hdr{connection} =~ /\bkeep-alive\b/i) { |
280 | if ($hdr{connection} =~ /\bkeep-alive\b/i) { |
271 | # but we don't, due to misdesigns, this is annoyingly complex |
281 | # but we don't, due to misdesigns, this is annoyingly complex |
272 | }; |
282 | }; |
273 | |
283 | |
274 | %state = (); |
284 | %state = (); |
275 | $cb->($_[1], \%hdr); |
285 | $finish->($_[1], \%hdr); |
276 | }); |
286 | }); |
277 | } else { |
287 | } else { |
278 | # too bad, need to read until we get an error or EOF, |
288 | # too bad, need to read until we get an error or EOF, |
279 | # no way to detect winged data. |
289 | # no way to detect winged data. |
280 | $_[0]->on_error (sub { |
290 | $_[0]->on_error (sub { |
281 | %state = (); |
291 | %state = (); |
282 | $cb->($_[0]{rbuf}, \%hdr); |
292 | $finish->($_[0]{rbuf}, \%hdr); |
283 | }); |
293 | }); |
284 | $_[0]->on_eof (undef); |
294 | $_[0]->on_eof (undef); |
285 | $_[0]->on_read (sub { }); |
295 | $_[0]->on_read (sub { }); |
286 | } |
296 | } |
287 | } |
297 | } |