From the blog post: Parsing UDP in Elixir with Binary Pattern Matching

Your Mission

In your (clandestine) consulting work for ACME Spy Corporation, you've been tasked with the following:

• Listen for UDP packets on port 21337
• Parse said messages according to the specification
• Log the message contents for later review

The specification of each message is as follows:

Message Header, 30 bytes
Message Body, 45 bytes
  - Priority Code, 1 byte, string
  - Agent Number, 4 bytes, unsigned integer
  - Message, 40 bytes, string

Bytes are in little-endian format.