| Value | Meaning |
|---|---|
| NOT_CLOSED | Fully open. |
| LOCALLY_CLOSING | A half-close frame has been generated. |
| LOCALLY_CLOSED | A half-close frame has been generated and sent. |
| REMOTELY_CLOSED | A half-close frame has been received. |
| CLOSING | A half-close frame has been received and a half-close frame has been generated, but not yet sent. |
| CLOSED | Fully closed. |
The set of close states for a stream or a session. <pre> rcv hc NOT_CLOSED ---------------> REMOTELY_CLOSED | | gen| |gen hc| |hc | | v rcv hc v LOCALLY_CLOSING --------------> CLOSING | | snd| |gen hc| |hc | | v rcv hc v LOCALLY_CLOSED ----------------> CLOSED </pre>