def set_hexdump(self, hexdump):
self.packetizer.set_hexdump(hexdump)<EOL>
Turn on/off logging a hex dump of protocol traffic at DEBUG level in
the logs.  Normally you would want this off (which is the default),
but if you are debugging something, it may be useful.

@param hexdump: C{True} to log protocol traffix (in hex) to the log;
    C{False} otherwise.
@type hexdump: bool