HttpURLConnection httpCon = (HttpURLConnection) urlConnection;
if (props != null) {
// il y a des propriétés header...
Hash hash=props.getHash();
ArrayList<String> ks=hash.keys_strings();
for (int i = 0; i < ks.size(); i++) {
String header_s = ks.get(i);
String value_s = Node.node2VString(hash.get(header_s)).getString();
Interpreter.Log(" HTTP-Header: " + header_s + " : " + value_s);
httpCon.setRequestProperty(header_s, value_s);