… | |
… | |
46 | use AnyEvent::Util (); |
46 | use AnyEvent::Util (); |
47 | use AnyEvent::Handle (); |
47 | use AnyEvent::Handle (); |
48 | |
48 | |
49 | use base Exporter::; |
49 | use base Exporter::; |
50 | |
50 | |
51 | our $VERSION = '2.14'; |
51 | our $VERSION = 2.22; |
52 | |
52 | |
53 | our @EXPORT = qw(http_get http_post http_head http_request); |
53 | our @EXPORT = qw(http_get http_post http_head http_request); |
54 | |
54 | |
55 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
55 | our $USERAGENT = "Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)"; |
56 | our $MAX_RECURSE = 10; |
56 | our $MAX_RECURSE = 10; |
… | |
… | |
89 | C<http_request> returns a "cancellation guard" - you have to keep the |
89 | C<http_request> returns a "cancellation guard" - you have to keep the |
90 | object at least alive until the callback get called. If the object gets |
90 | object at least alive until the callback get called. If the object gets |
91 | destroyed before the callback is called, the request will be cancelled. |
91 | destroyed before the callback is called, the request will be cancelled. |
92 | |
92 | |
93 | The callback will be called with the response body data as first argument |
93 | The callback will be called with the response body data as first argument |
94 | (or C<undef> if an error occured), and a hash-ref with response headers |
94 | (or C<undef> if an error occurred), and a hash-ref with response headers |
95 | (and trailers) as second argument. |
95 | (and trailers) as second argument. |
96 | |
96 | |
97 | All the headers in that hash are lowercased. In addition to the response |
97 | All the headers in that hash are lowercased. In addition to the response |
98 | headers, the "pseudo-headers" (uppercase to avoid clashing with possible |
98 | headers, the "pseudo-headers" (uppercase to avoid clashing with possible |
99 | response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the |
99 | response headers) C<HTTPVersion>, C<Status> and C<Reason> contain the |
… | |
… | |
123 | C<590>-C<599> and the C<Reason> pseudo-header will contain an error |
123 | C<590>-C<599> and the C<Reason> pseudo-header will contain an error |
124 | message. Currently the following status codes are used: |
124 | message. Currently the following status codes are used: |
125 | |
125 | |
126 | =over 4 |
126 | =over 4 |
127 | |
127 | |
128 | =item 595 - errors during connection etsbalishment, proxy handshake. |
128 | =item 595 - errors during connection establishment, proxy handshake. |
129 | |
129 | |
130 | =item 596 - errors during TLS negotiation, request sending and header processing. |
130 | =item 596 - errors during TLS negotiation, request sending and header processing. |
131 | |
131 | |
132 | =item 597 - errors during body receiving or processing. |
132 | =item 597 - errors during body receiving or processing. |
133 | |
133 | |
… | |
… | |
154 | |
154 | |
155 | =over 4 |
155 | =over 4 |
156 | |
156 | |
157 | =item recurse => $count (default: $MAX_RECURSE) |
157 | =item recurse => $count (default: $MAX_RECURSE) |
158 | |
158 | |
159 | Whether to recurse requests or not, e.g. on redirects, authentication |
159 | Whether to recurse requests or not, e.g. on redirects, authentication and |
160 | retries and so on, and how often to do so. |
160 | other retries and so on, and how often to do so. |
|
|
161 | |
|
|
162 | Only redirects to http and https URLs are supported. While most common |
|
|
163 | redirection forms are handled entirely within this module, some require |
|
|
164 | the use of the optional L<URI> module. If it is required but missing, then |
|
|
165 | the request will fail with an error. |
161 | |
166 | |
162 | =item headers => hashref |
167 | =item headers => hashref |
163 | |
168 | |
164 | The request headers to use. Currently, C<http_request> may provide its own |
169 | The request headers to use. Currently, C<http_request> may provide its own |
165 | C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and |
170 | C<Host:>, C<Content-Length:>, C<Connection:> and C<Cookie:> headers and |
… | |
… | |
189 | |
194 | |
190 | C<$scheme> must be either missing or must be C<http> for HTTP. |
195 | C<$scheme> must be either missing or must be C<http> for HTTP. |
191 | |
196 | |
192 | If not specified, then the default proxy is used (see |
197 | If not specified, then the default proxy is used (see |
193 | C<AnyEvent::HTTP::set_proxy>). |
198 | C<AnyEvent::HTTP::set_proxy>). |
|
|
199 | |
|
|
200 | Currently, if your proxy requires authorization, you have to specify an |
|
|
201 | appropriate "Proxy-Authorization" header in every request. |
194 | |
202 | |
195 | =item body => $string |
203 | =item body => $string |
196 | |
204 | |
197 | The request body, usually empty. Will be sent as-is (future versions of |
205 | The request body, usually empty. Will be sent as-is (future versions of |
198 | this module might offer more options). |
206 | this module might offer more options). |
… | |
… | |
242 | context) - only connections using the same unique ID will be reused. |
250 | context) - only connections using the same unique ID will be reused. |
243 | |
251 | |
244 | =item on_prepare => $callback->($fh) |
252 | =item on_prepare => $callback->($fh) |
245 | |
253 | |
246 | In rare cases you need to "tune" the socket before it is used to |
254 | In rare cases you need to "tune" the socket before it is used to |
247 | connect (for exmaple, to bind it on a given IP address). This parameter |
255 | connect (for example, to bind it on a given IP address). This parameter |
248 | overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> |
256 | overrides the prepare callback passed to C<AnyEvent::Socket::tcp_connect> |
249 | and behaves exactly the same way (e.g. it has to provide a |
257 | and behaves exactly the same way (e.g. it has to provide a |
250 | timeout). See the description for the C<$prepare_cb> argument of |
258 | timeout). See the description for the C<$prepare_cb> argument of |
251 | C<AnyEvent::Socket::tcp_connect> for details. |
259 | C<AnyEvent::Socket::tcp_connect> for details. |
252 | |
260 | |
… | |
… | |
689 | |
697 | |
690 | $cb->(undef, $hdr); |
698 | $cb->(undef, $hdr); |
691 | () |
699 | () |
692 | } |
700 | } |
693 | |
701 | |
|
|
702 | our %IDEMPOTENT = ( |
|
|
703 | DELETE => 1, |
|
|
704 | GET => 1, |
|
|
705 | HEAD => 1, |
|
|
706 | OPTIONS => 1, |
|
|
707 | PUT => 1, |
|
|
708 | TRACE => 1, |
|
|
709 | |
|
|
710 | ACL => 1, |
|
|
711 | "BASELINE-CONTROL" => 1, |
|
|
712 | BIND => 1, |
|
|
713 | CHECKIN => 1, |
|
|
714 | CHECKOUT => 1, |
|
|
715 | COPY => 1, |
|
|
716 | LABEL => 1, |
|
|
717 | LINK => 1, |
|
|
718 | MERGE => 1, |
|
|
719 | MKACTIVITY => 1, |
|
|
720 | MKCALENDAR => 1, |
|
|
721 | MKCOL => 1, |
|
|
722 | MKREDIRECTREF => 1, |
|
|
723 | MKWORKSPACE => 1, |
|
|
724 | MOVE => 1, |
|
|
725 | ORDERPATCH => 1, |
|
|
726 | PROPFIND => 1, |
|
|
727 | PROPPATCH => 1, |
|
|
728 | REBIND => 1, |
|
|
729 | REPORT => 1, |
|
|
730 | SEARCH => 1, |
|
|
731 | UNBIND => 1, |
|
|
732 | UNCHECKOUT => 1, |
|
|
733 | UNLINK => 1, |
|
|
734 | UNLOCK => 1, |
|
|
735 | UPDATE => 1, |
|
|
736 | UPDATEREDIRECTREF => 1, |
|
|
737 | "VERSION-CONTROL" => 1, |
|
|
738 | ); |
|
|
739 | |
694 | sub http_request($$@) { |
740 | sub http_request($$@) { |
695 | my $cb = pop; |
741 | my $cb = pop; |
696 | my ($method, $url, %arg) = @_; |
742 | my ($method, $url, %arg) = @_; |
697 | |
743 | |
698 | my %hdr; |
744 | my %hdr; |
… | |
… | |
727 | |
773 | |
728 | my $uport = $uscheme eq "http" ? 80 |
774 | my $uport = $uscheme eq "http" ? 80 |
729 | : $uscheme eq "https" ? 443 |
775 | : $uscheme eq "https" ? 443 |
730 | : return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" }); |
776 | : return $cb->(undef, { @pseudo, Status => 599, Reason => "Only http and https URL schemes supported" }); |
731 | |
777 | |
732 | $uauthority =~ /^(?: .*\@ )? ([^\@:]+) (?: : (\d+) )?$/x |
778 | $uauthority =~ /^(?: .*\@ )? ([^\@]+?) (?: : (\d+) )?$/x |
733 | or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" }); |
779 | or return $cb->(undef, { @pseudo, Status => 599, Reason => "Unparsable URL" }); |
734 | |
780 | |
735 | my $uhost = lc $1; |
781 | my $uhost = lc $1; |
736 | $uport = $2 if defined $2; |
782 | $uport = $2 if defined $2; |
737 | |
783 | |
… | |
… | |
773 | $hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"}; |
819 | $hdr{"user-agent"} = $USERAGENT unless exists $hdr{"user-agent"}; |
774 | |
820 | |
775 | $hdr{"content-length"} = length $arg{body} |
821 | $hdr{"content-length"} = length $arg{body} |
776 | if length $arg{body} || $method ne "GET"; |
822 | if length $arg{body} || $method ne "GET"; |
777 | |
823 | |
778 | my $idempotent = $method =~ /^(?:GET|HEAD|PUT|DELETE|OPTIONS|TRACE)$/; |
824 | my $idempotent = $IDEMPOTENT{$method}; |
779 | |
825 | |
780 | # default value for keepalive is true iff the request is for an idempotent method |
826 | # default value for keepalive is true iff the request is for an idempotent method |
781 | my $persistent = exists $arg{persistent} ? !!$arg{persistent} : $idempotent; |
827 | my $persistent = exists $arg{persistent} ? !!$arg{persistent} : $idempotent; |
782 | my $keepalive = exists $arg{keepalive} ? !!$arg{keepalive} : !$proxy; |
828 | my $keepalive = exists $arg{keepalive} ? !!$arg{keepalive} : !$proxy; |
783 | my $was_persistent; # true if this is actually a recycled connection |
829 | my $was_persistent; # true if this is actually a recycled connection |
784 | |
830 | |
785 | # the key to use in the keepalive cache |
831 | # the key to use in the keepalive cache |
786 | my $ka_key = "$uscheme\x00$uhost\x00$uport\x00$arg{sessionid}"; |
832 | my $ka_key = "$uscheme\x00$uhost\x00$uport\x00$arg{sessionid}"; |
787 | |
833 | |
788 | $hdr{connection} = ($persistent ? $keepalive ? "keep-alive " : "" : "close ") . "Te"; #1.1 |
834 | $hdr{connection} = ($persistent ? $keepalive ? "keep-alive, " : "" : "close, ") . "Te"; #1.1 |
789 | $hdr{te} = "trailers" unless exists $hdr{te}; #1.1 |
835 | $hdr{te} = "trailers" unless exists $hdr{te}; #1.1 |
790 | |
836 | |
791 | my %state = (connect_guard => 1); |
837 | my %state = (connect_guard => 1); |
792 | |
838 | |
793 | my $ae_error = 595; # connecting |
839 | my $ae_error = 595; # connecting |
… | |
… | |
803 | # send request |
849 | # send request |
804 | $hdl->push_write ( |
850 | $hdl->push_write ( |
805 | "$method $rpath HTTP/1.1\015\012" |
851 | "$method $rpath HTTP/1.1\015\012" |
806 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
852 | . (join "", map "\u$_: $hdr{$_}\015\012", grep defined $hdr{$_}, keys %hdr) |
807 | . "\015\012" |
853 | . "\015\012" |
808 | . (delete $arg{body}) |
854 | . $arg{body} |
809 | ); |
855 | ); |
810 | |
856 | |
811 | # return if error occured during push_write() |
857 | # return if error occurred during push_write() |
812 | return unless %state; |
858 | return unless %state; |
813 | |
859 | |
814 | # reduce memory usage, save a kitten, also re-use it for the response headers. |
860 | # reduce memory usage, save a kitten, also re-use it for the response headers. |
815 | %hdr = (); |
861 | %hdr = (); |
816 | |
862 | |
… | |
… | |
843 | |
889 | |
844 | %hdr = (%$hdr, @pseudo); |
890 | %hdr = (%$hdr, @pseudo); |
845 | } |
891 | } |
846 | |
892 | |
847 | # redirect handling |
893 | # redirect handling |
848 | # microsoft and other shitheads don't give a shit for following standards, |
894 | # relative uri handling forced by microsoft and other shitheads. |
849 | # try to support some common forms of broken Location headers. |
895 | # we give our best and fall back to URI if available. |
850 | if ($hdr{location} !~ /^(?: $ | [^:\/?\#]+ : )/x) { |
896 | if (exists $hdr{location}) { |
|
|
897 | my $loc = $hdr{location}; |
|
|
898 | |
|
|
899 | if ($loc =~ m%^//%) { # // |
|
|
900 | $loc = "$rscheme:$loc"; |
|
|
901 | |
|
|
902 | } elsif ($loc eq "") { |
|
|
903 | $loc = $url; |
|
|
904 | |
|
|
905 | } elsif ($loc !~ /^(?: $ | [^:\/?\#]+ : )/x) { # anything "simple" |
851 | $hdr{location} =~ s/^\.\/+//; |
906 | $loc =~ s/^\.\/+//; |
852 | |
907 | |
|
|
908 | if ($loc !~ m%^[.?#]%) { |
853 | my $url = "$rscheme://$uhost:$uport"; |
909 | my $prefix = "$rscheme://$uhost:$uport"; |
854 | |
910 | |
855 | unless ($hdr{location} =~ s/^\///) { |
911 | unless ($loc =~ s/^\///) { |
856 | $url .= $upath; |
912 | $prefix .= $upath; |
857 | $url =~ s/\/[^\/]*$//; |
913 | $prefix =~ s/\/[^\/]*$//; |
|
|
914 | } |
|
|
915 | |
|
|
916 | $loc = "$prefix/$loc"; |
|
|
917 | |
|
|
918 | } elsif (eval { require URI }) { # uri |
|
|
919 | $loc = URI->new_abs ($loc, $url)->as_string; |
|
|
920 | |
|
|
921 | } else { |
|
|
922 | return _error %state, $cb, { @pseudo, Status => 599, Reason => "Cannot parse Location (URI module missing)" }; |
|
|
923 | #$hdr{Status} = 599; |
|
|
924 | #$hdr{Reason} = "Unparsable Redirect (URI module missing)"; |
|
|
925 | #$recurse = 0; |
|
|
926 | } |
858 | } |
927 | } |
859 | |
928 | |
860 | $hdr{location} = "$url/$hdr{location}"; |
929 | $hdr{location} = $loc; |
861 | } |
930 | } |
862 | |
931 | |
863 | my $redirect; |
932 | my $redirect; |
864 | |
933 | |
865 | if ($recurse) { |
934 | if ($recurse) { |
… | |
… | |
867 | |
936 | |
868 | # industry standard is to redirect POST as GET for |
937 | # industry standard is to redirect POST as GET for |
869 | # 301, 302 and 303, in contrast to HTTP/1.0 and 1.1. |
938 | # 301, 302 and 303, in contrast to HTTP/1.0 and 1.1. |
870 | # also, the UA should ask the user for 301 and 307 and POST, |
939 | # also, the UA should ask the user for 301 and 307 and POST, |
871 | # industry standard seems to be to simply follow. |
940 | # industry standard seems to be to simply follow. |
872 | # we go with the industry standard. |
941 | # we go with the industry standard. 308 is defined |
|
|
942 | # by rfc7538 |
873 | if ($status == 301 or $status == 302 or $status == 303) { |
943 | if ($status == 301 or $status == 302 or $status == 303) { |
|
|
944 | $redirect = 1; |
874 | # HTTP/1.1 is unclear on how to mutate the method |
945 | # HTTP/1.1 is unclear on how to mutate the method |
875 | $method = "GET" unless $method eq "HEAD"; |
946 | unless ($method eq "HEAD") { |
876 | $redirect = 1; |
947 | $method = "GET"; |
|
|
948 | delete $arg{body}; |
|
|
949 | } |
877 | } elsif ($status == 307) { |
950 | } elsif ($status == 307 or $status == 308) { |
878 | $redirect = 1; |
951 | $redirect = 1; |
879 | } |
952 | } |
880 | } |
953 | } |
881 | |
954 | |
882 | my $finish = sub { # ($data, $err_status, $err_reason[, $persistent]) |
955 | my $finish = sub { # ($data, $err_status, $err_reason[, $persistent]) |
… | |
… | |
1050 | _destroy_state %state; |
1123 | _destroy_state %state; |
1051 | |
1124 | |
1052 | %state = (); |
1125 | %state = (); |
1053 | $state{recurse} = |
1126 | $state{recurse} = |
1054 | http_request ( |
1127 | http_request ( |
1055 | $method => $url, |
1128 | $method => $url, |
1056 | %arg, |
1129 | %arg, |
|
|
1130 | recurse => $recurse - 1, |
1057 | keepalive => 0, |
1131 | persistent => 0, |
1058 | sub { |
1132 | sub { |
1059 | %state = (); |
1133 | %state = (); |
1060 | &$cb |
1134 | &$cb |
1061 | } |
1135 | } |
1062 | ); |
1136 | ); |
… | |
… | |
1108 | |
1182 | |
1109 | # now handle proxy-CONNECT method |
1183 | # now handle proxy-CONNECT method |
1110 | if ($proxy && $uscheme eq "https") { |
1184 | if ($proxy && $uscheme eq "https") { |
1111 | # oh dear, we have to wrap it into a connect request |
1185 | # oh dear, we have to wrap it into a connect request |
1112 | |
1186 | |
|
|
1187 | my $auth = exists $hdr{"proxy-authorization"} |
|
|
1188 | ? "proxy-authorization: " . (delete $hdr{"proxy-authorization"}) . "\015\012" |
|
|
1189 | : ""; |
|
|
1190 | |
1113 | # maybe re-use $uauthority with patched port? |
1191 | # maybe re-use $uauthority with patched port? |
1114 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012\015\012"); |
1192 | $state{handle}->push_write ("CONNECT $uhost:$uport HTTP/1.0\015\012$auth\015\012"); |
1115 | $state{handle}->push_read (line => $qr_nlnl, sub { |
1193 | $state{handle}->push_read (line => $qr_nlnl, sub { |
1116 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
1194 | $_[1] =~ /^HTTP\/([0-9\.]+) \s+ ([0-9]{3}) (?: \s+ ([^\015\012]*) )?/ix |
1117 | or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }; |
1195 | or return _error %state, $cb, { @pseudo, Status => 599, Reason => "Invalid proxy connect response ($_[1])" }; |
1118 | |
1196 | |
1119 | if ($2 == 200) { |
1197 | if ($2 == 200) { |
… | |
… | |
1122 | } else { |
1200 | } else { |
1123 | _error %state, $cb, { @pseudo, Status => $2, Reason => $3 }; |
1201 | _error %state, $cb, { @pseudo, Status => $2, Reason => $3 }; |
1124 | } |
1202 | } |
1125 | }); |
1203 | }); |
1126 | } else { |
1204 | } else { |
|
|
1205 | delete $hdr{"proxy-authorization"} unless $proxy; |
|
|
1206 | |
1127 | $handle_actual_request->(); |
1207 | $handle_actual_request->(); |
1128 | } |
1208 | } |
1129 | }; |
1209 | }; |
1130 | |
1210 | |
1131 | _get_slot $uhost, sub { |
1211 | _get_slot $uhost, sub { |
… | |
… | |
1193 | Sets the default proxy server to use. The proxy-url must begin with a |
1273 | Sets the default proxy server to use. The proxy-url must begin with a |
1194 | string of the form C<http://host:port>, croaks otherwise. |
1274 | string of the form C<http://host:port>, croaks otherwise. |
1195 | |
1275 | |
1196 | To clear an already-set proxy, use C<undef>. |
1276 | To clear an already-set proxy, use C<undef>. |
1197 | |
1277 | |
1198 | When AnyEvent::HTTP is laoded for the first time it will query the |
1278 | When AnyEvent::HTTP is loaded for the first time it will query the |
1199 | default proxy from the operating system, currently by looking at |
1279 | default proxy from the operating system, currently by looking at |
1200 | C<$ENV{http_proxy>}. |
1280 | C<$ENV{http_proxy>}. |
1201 | |
1281 | |
1202 | =item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end] |
1282 | =item AnyEvent::HTTP::cookie_jar_expire $jar[, $session_end] |
1203 | |
1283 | |
… | |
… | |
1205 | C<$session_end> is given and true, then additionally remove all session |
1285 | C<$session_end> is given and true, then additionally remove all session |
1206 | cookies. |
1286 | cookies. |
1207 | |
1287 | |
1208 | You should call this function (with a true C<$session_end>) before you |
1288 | You should call this function (with a true C<$session_end>) before you |
1209 | save cookies to disk, and you should call this function after loading them |
1289 | save cookies to disk, and you should call this function after loading them |
1210 | again. If you have a long-running program you can additonally call this |
1290 | again. If you have a long-running program you can additionally call this |
1211 | function from time to time. |
1291 | function from time to time. |
1212 | |
1292 | |
1213 | A cookie jar is initially an empty hash-reference that is managed by this |
1293 | A cookie jar is initially an empty hash-reference that is managed by this |
1214 | module. It's format is subject to change, but currently it is like this: |
1294 | module. Its format is subject to change, but currently it is as follows: |
1215 | |
1295 | |
1216 | The key C<version> has to contain C<1>, otherwise the hash gets |
1296 | The key C<version> has to contain C<1>, otherwise the hash gets |
1217 | emptied. All other keys are hostnames or IP addresses pointing to |
1297 | emptied. All other keys are hostnames or IP addresses pointing to |
1218 | hash-references. The key for these inner hash references is the |
1298 | hash-references. The key for these inner hash references is the |
1219 | server path for which this cookie is meant, and the values are again |
1299 | server path for which this cookie is meant, and the values are again |
1220 | hash-references. The keys of those hash-references is the cookie name, and |
1300 | hash-references. Each key of those hash-references is a cookie name, and |
1221 | the value, you guessed it, is another hash-reference, this time with the |
1301 | the value, you guessed it, is another hash-reference, this time with the |
1222 | key-value pairs from the cookie, except for C<expires> and C<max-age>, |
1302 | key-value pairs from the cookie, except for C<expires> and C<max-age>, |
1223 | which have been replaced by a C<_expires> key that contains the cookie |
1303 | which have been replaced by a C<_expires> key that contains the cookie |
1224 | expiry timestamp. |
1304 | expiry timestamp. Session cookies are indicated by not having an |
|
|
1305 | C<_expires> key. |
1225 | |
1306 | |
1226 | Here is an example of a cookie jar with a single cookie, so you have a |
1307 | Here is an example of a cookie jar with a single cookie, so you have a |
1227 | chance of understanding the above paragraph: |
1308 | chance of understanding the above paragraph: |
1228 | |
1309 | |
1229 | { |
1310 | { |
… | |
… | |
1263 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
1344 | C<Mozilla/5.0 (compatible; U; AnyEvent-HTTP/$VERSION; +http://software.schmorp.de/pkg/AnyEvent)>). |
1264 | |
1345 | |
1265 | =item $AnyEvent::HTTP::MAX_PER_HOST |
1346 | =item $AnyEvent::HTTP::MAX_PER_HOST |
1266 | |
1347 | |
1267 | The maximum number of concurrent connections to the same host (identified |
1348 | The maximum number of concurrent connections to the same host (identified |
1268 | by the hostname). If the limit is exceeded, then the additional requests |
1349 | by the hostname). If the limit is exceeded, then additional requests |
1269 | are queued until previous connections are closed. Both persistent and |
1350 | are queued until previous connections are closed. Both persistent and |
1270 | non-persistent connections are counted in this limit. |
1351 | non-persistent connections are counted in this limit. |
1271 | |
1352 | |
1272 | The default value for this is C<4>, and it is highly advisable to not |
1353 | The default value for this is C<4>, and it is highly advisable to not |
1273 | increase it much. |
1354 | increase it much. |
1274 | |
1355 | |
1275 | For comparison: the RFC's recommend 4 non-persistent or 2 persistent |
1356 | For comparison: the RFC's recommend 4 non-persistent or 2 persistent |
1276 | connections, older browsers used 2, newers (such as firefox 3) typically |
1357 | connections, older browsers used 2, newer ones (such as firefox 3) |
1277 | use 6, and Opera uses 8 because like, they have the fastest browser and |
1358 | typically use 6, and Opera uses 8 because like, they have the fastest |
1278 | give a shit for everybody else on the planet. |
1359 | browser and give a shit for everybody else on the planet. |
1279 | |
1360 | |
1280 | =item $AnyEvent::HTTP::PERSISTENT_TIMEOUT |
1361 | =item $AnyEvent::HTTP::PERSISTENT_TIMEOUT |
1281 | |
1362 | |
1282 | The time after which idle persistent conenctions get closed by |
1363 | The time after which idle persistent connections get closed by |
1283 | AnyEvent::HTTP (default: C<3>). |
1364 | AnyEvent::HTTP (default: C<3>). |
1284 | |
1365 | |
1285 | =item $AnyEvent::HTTP::ACTIVE |
1366 | =item $AnyEvent::HTTP::ACTIVE |
1286 | |
1367 | |
1287 | The number of active connections. This is not the number of currently |
1368 | The number of active connections. This is not the number of currently |
… | |
… | |
1352 | set_proxy $ENV{http_proxy}; |
1433 | set_proxy $ENV{http_proxy}; |
1353 | }; |
1434 | }; |
1354 | |
1435 | |
1355 | =head2 SHOWCASE |
1436 | =head2 SHOWCASE |
1356 | |
1437 | |
1357 | This section contaisn some more elaborate "real-world" examples or code |
1438 | This section contains some more elaborate "real-world" examples or code |
1358 | snippets. |
1439 | snippets. |
1359 | |
1440 | |
1360 | =head2 HTTP/1.1 FILE DOWNLOAD |
1441 | =head2 HTTP/1.1 FILE DOWNLOAD |
1361 | |
1442 | |
1362 | Downloading files with HTTP can be quite tricky, especially when something |
1443 | Downloading files with HTTP can be quite tricky, especially when something |
… | |
… | |
1366 | last modified time to check for file content changes, and works with many |
1447 | last modified time to check for file content changes, and works with many |
1367 | HTTP/1.0 servers as well, and usually falls back to a complete re-download |
1448 | HTTP/1.0 servers as well, and usually falls back to a complete re-download |
1368 | on older servers. |
1449 | on older servers. |
1369 | |
1450 | |
1370 | It calls the completion callback with either C<undef>, which means a |
1451 | It calls the completion callback with either C<undef>, which means a |
1371 | nonretryable error occured, C<0> when the download was partial and should |
1452 | nonretryable error occurred, C<0> when the download was partial and should |
1372 | be retried, and C<1> if it was successful. |
1453 | be retried, and C<1> if it was successful. |
1373 | |
1454 | |
1374 | use AnyEvent::HTTP; |
1455 | use AnyEvent::HTTP; |
1375 | |
1456 | |
1376 | sub download($$$) { |
1457 | sub download($$$) { |