for (String h : headers.getFieldNames()) { c.setRequestProperty(h, "" + headers.get(h));
for (String headerKey : headers.getFieldNames()) { xmlHttpRequest.setRequestHeader(headerKey, String.valueOf(headers.get(headerKey)));
for (String h : headers.getFieldNames()) { c.setRequestProperty(h, "" + headers.get(h));
for (String headerKey : headers.getFieldNames()) { xmlHttpRequest.setRequestHeader(headerKey, String.valueOf(headers.get(headerKey)));