a.rb

    $('#searchinput').autocomplete({
        source: function(req,res) {
            console.log("req:" + req.term)
            $.ajax({
                // url: "http://souri-mediaserver.ddns.net:5000/ac/"+req.term,
                url: "http://192.168.1.111:5000/ac/" + link[3]+ "/" +req.term,
                dataType: "jsonp",
                type: "GET",
                data: {
                    term: req.term
                },
                success: function(data) {
                    res($.map(data.results, function(source) {
                        return {
                            label: source._source.Name,//text comes from a collection of mongo
                            value: source._source.Name
                        };
                    }));
                },
                error: function(xhr) {
                    alert(xhr.status + ' : ' + xhr.statusText);
                }
            });
        },
        select: function(event, ui) {

        }
    });