• poll says theres new data available on our socket
• add data to the buffer
• Check for EOL in the new data
• If found, check state and hand off to the next routine

Connections have a current request (and probably current response). Requests have:

• Method (enum, why not)
• Target URI/path
• Header hash (think about multiple headers)
• Possible content (in memory vs cache to disk)

[This stack overflow answer] (https://stackoverflow.com/a/17905131/195833) shows how to do state machine functions (functions that return pointers to functions of their type)