def setPrefixLimit(limit):
    """
    Set the limit on the prefix length for all Banana connections
    established after this call.

    The prefix length limit determines how many bytes of prefix a banana
    decoder will allow before rejecting a potential object as too large.

    @type limit: L{int}
    @param limit: The number of bytes of prefix for banana to allow when
    decoding.
    """
    global _PREFIX_LIMIT
    _PREFIX_LIMIT = limit
