Implement standard (and unused) TCP protocols.
These protocols are either provided by inetd, or are not provided at all.
| Class | Echo | As soon as any data is received, write it back (RFC 862). |
| Class | Discard | Discard any received data (RFC 863). |
| Class | Chargen | Generate repeating noise (RFC 864). |
| Class | QOTD | Return a quote of the day (RFC 865). |
| Class | Who | Return list of active users (RFC 866) |
| Class | Daytime | Send back the daytime in ASCII form (RFC 867). |
| Class | Time | Send back the time in machine readable form (RFC 868). |