* @param user a {@link iqq.im.bean.QQStranger} object.
* @param listener a {@link iqq.im.QQActionListener} object.
* @return a {@link iqq.im.event.QQActionFuture} object.
*/
public QQActionFuture getSessionMsgSig(QQStranger user, QQActionListener listener) {
return pushHttpAction(new GetSessionMsgSigAction(getContext(), listener, user));
}