| Value | Meaning |
|---|---|
| INITIAL | Initial state |
| OPENING | For stream initiator: request HEADERS has been sent, but response HEADERS has not been received yet. For receiver: request HEADERS has been received, but it does not send response HEADERS yet. |
| OPENED | For stream initiator: response HEADERS is received. For receiver: response HEADERS is sent. |
| CLOSING | RST_STREAM is received, but somehow we need to keep stream in memory. |
| RESERVED | PUSH_PROMISE is received or sent |
| IDLE | Stream is created in this state if it is used as anchor in dependency tree. |
If local peer is stream initiator: OPENING : upon sending request HEADERS OPENED : upon receiving response HEADERS CLOSING : upon queuing RST_STREAM
If remote peer is stream initiator: OPENING : upon receiving request HEADERS OPENED : upon sending response HEADERS CLOSING : upon queuing RST_STREAM