+sub fetch_iotcore(@) {
+ my $host = shift;
+ my $adr = shift;
+ my $mask = shift;
+
+ my $ua = LWP::UserAgent->new;
+ $ua->timeout(1);
+
+ my $iotcore_req = {
+ cid => 1,
+ code => 10,
+ adr => $adr,
+ };
+
+ my $req = HTTP::Request->new(POST => "http://${host}");
+ $req->content_type('application/json');
+ $req->content(encode_json($iotcore_req));
+
+ my $resp = $ua->request($req);
+ return undef if (!$resp->is_success);
+
+ my $pdin = decode_json($resp->decoded_content);
+ return undef if (!defined($pdin));
+
+ my $value = hex($pdin->{'data'}->{'value'});
+
+ if (defined($mask)) {
+ $value = $value & $mask;
+ }
+
+ $value;
+}
+