// ( like 'upgrade')
CBuffer value = headers.getHeader(CONNECTION);
// TODO: split it by space
if (value != null) {
value.toLower();
if (value.indexOf(CLOSE) >= 0) {
// 1.1 ( but we accept it for 1.0 too )
closeStreamOnEnd("connection close");
}
if (http10 && value.indexOf(KEEPALIVE_S) < 0) {