If errors occur when parsing a packet, Ryu will raise a except, which will call
utils.bytearray_to_hex method.
Unfortunately, it will raise an attribute ERROR: 'module' utils has not
attribute 'bytearray_to_hex'
but I still can find the bytearray_to_hex method in utils.py
Why?
Related codes show below:
try:
return msg_parser(datapath, version, msg_type, msg_len, xid, buf)
except:
LOG.exception(
'Encounter an error during parsing OpenFlow packet from switch.'
'This implies switch sending a malformed OpenFlow packet.'
'version 0x%02x msg_type %d msg_len %d xid %d buf %s',
version, msg_type, msg_len, xid, utils.bytearray_to_hex(buf))
return None
------------------
Distance ????
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