5-packet TCP connection?
This seems to be valid:
- C->S: SYN
- S->C: SYN/ACK
- C->S: FIN/ACK
- S->C: FIN/ACK
- C->S: ACK
A completely opened and closed TCP connection. Further, 2 and 3 can both contain data? Could you get a whole HTTP request/response in this conversation?