enable tcp and udp in single ServerBootstrap

[chanwai1219]

Dear wangle team,

In the wangle readme, there is description for enabling TCP and UDP server in a single ServerBootstrap simultaneously:

In practice, ServerBootstrap is only useful for udp if you need to multiplex the messages across many threads, or have TCP connections going on at the same time, etc

Is there an example to do that?

BR

[yfeldblum]

This is a description of ServerBootstrap working with either TCP or UDP at a given time, not with both at the same time.