When a District Court's denial of a §2255 motion is contrary to established precedent, is the Court of Appeals required to grant a certificate of appealability?

QUESTIONS PRESENTED 1.) When a District Court's denial of a §2255 motion is contrary ‘to established precedent is the Court of Appeals required to grant a certificate of appealability? . 2.) Does a defendant's constitutional right to be present extend to an in camera hearing where the U.S. Attorney, defense : counsel, and the judge discuss what the judge will accept in a contemplated plea agreement? . (i-)