| Value | Meaning |
|---|---|
| NODELAY0 | Don't delay send to coalesce packets |
| REUSEADDR1 | |
| REUSEPORT | |
| CORK | |
| LINGER | |
| BUFFER_RECV | |
| BUFFER_SEND | |
| TIMEOUT_RECV | |
| TIMEOUT_SEND | |
| TIMEOUT_HALFOPEN | |
| KEEPALIVE_ENABLE | |
| KEEPALIVE_DEFER | Start keeplives after this period |
| KEEPALIVE_COUNT | Number of keepalives before death |
| KEEPALIVE_INTERVAL | Interval between keepalives |
| DEFER_ACCEPT | |
| QUICK_ACK | Bock/reenable quick ACKs. |
| CONGESTION |