save_mark.txt

app.post('/save_mark_T1',function(req,res){

    var jsonString = '';
    req.on('data',function(data)
        {
            jsonString += data;
        })
    req.on('end',function(){
        var jsonData = JSON.parse('{"' + decodeURI(jsonString).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g,'":"') + '"}');
        var dbData = [];
        var country_name = '';
        for(var i in jsonData)
        {
            if(i!='country')
                dbData.push(parseFloat(jsonData[i]));
            else country_name = jsonData[i];
        }
        MongoClient.connect("mongodb://localhost:27017/test",function(err,db)
        {
            if(err)
            {
                console.log(err);
                return 0;
            }
            if(req.ip != null)
            {
                var ip = req.ip.toString();
            }
            else
            {
                console.log("Null IP Error.Carry on");
                return;
            }
            console.log("Connection established to the server at mongodb://localhost:27017/test in response to " + ip.toString());
            if(country_name=='')
                var marks = db.collection('marks_T1');
            else var marks = db.collection('ourMarks_T1');
            var query_ob = {};
            if(country_name=='')query_ob["ip"] = ip;
            else query_ob["country_name"] = country_name;
            marks.update(query_ob,{$set:{"leaderMarks":dbData}},{upsert:true},function(err,result){
                res.json({"success":true});
                db.close();});
        });
    });
});