Integration tests - Internal localhost

[pinkforest]

Need additional tests for localhost loopback to validate at protocol with bare minimum app

Bare TLS w/o App Data - bare PING PONG protocol

• [X] Client -> Server
• via #55 (against OpenSSL)
• [ ] Server -> Client

Simulated HTTP App data

• [ ] Hardcoded HTTP client -> self--contained NGINX - minimize App layer to ~bare minimum
• [ ] curl -> Hardcoded HTTP minimal server

Anything else we should test internally ?

Taking a crack at this rn