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malformed JSON string, neither tag, array, object, number, string or a
+tom, at character offset 0 (before "Can't connect to ip...")

my $req = HTTP::Request->new(POST => 'http://ip:4000');
$req->content_type('application/x-www-form-urlencoded');
...
$respons = JSON::XS->new->decode ($res->content);
$dat = $respons->{data};
$adat1 = $respons->{name};