Improve examples/custom_protocol.py
Improve examples/custom_protocol.py

channelcat/sanic,r0fls/sanic,channelcat/sanic,ashleysommer/sanic,yunstanford/sanic,ai0/sanic,yunstanford/sanic,channelcat/sanic,ashleysommer/sanic,ai0/sanic,lixxu/sanic,Tim-Erwin/sanic,lixxu/sanic,lixxu/sanic,ashleysommer/sanic,Tim-Erwin/sanic,lixxu/sanic,jrocketfingers/sanic,jrocketfingers/sanic,yunstanford/sanic,yunstanford/sanic,channelcat/sanic,r0fls/sanic