def acceptSecContext(input_token, acceptor_cred=None, ctx=None,
    channel_bindings=None):
    """
    Accepts a GSS Security Context

    (Server)
    This method accepts a GSSAPI security context
    based on the given parameters, including the token
    sent by the client returned from :func:`initSecContext`

    :param str input_token: the token sent from the client
    :param acceptor_cred: the handle for the credentials (returned from
                          acquireCred) used to accept the context, or None
                          to use the default acceptor principal
    :param ctx: the current context, or None for a new context
    :param channel_bindings: the requested channel bindings
                             (currently on None is accepted)
    :returns: a tuple containing
              the (potentially modified) context,
              the authenticated name of the context initiator,
              the mechanism type used,
              the output token (to send to the client),
              the flags in use,
              the TTL for the context,
              and the delegated credential handle
              (or None if
              RequirementFlags.delegate_to_peer is not present
              in the flags)
              (i.e. (context, name, MechType, bytes,
              [RequirementFlag], int, delegated_cred, continue_needed))
    :except GSSError:
    """
