var array = [];
 var i = 0;
        while (typeof eval("req.body.peer" + i) !== 'undefined' &&  eval("req.body.peer" + i) !== '') {
        console.log('petla wisielca');
        //console.log(eval("req.body.peer" + i));
        array.push(eval('req.body.peer' + i));
        i++;
        }

var array = []
var i = 0
while (req.body['peer' + i]) {
  array.push(req.body['peer' + i])
  i++
}

var array = []
var i = 0
while (req.body['peer' + i]) {
  array.push(req.body['peer' + i])
  i++
}