| Value | Meaning |
|---|---|
| stateConnecting0 | The channel was created, but it's still trying to connect. |
| stateOpen1 | The channel is currently open, and data can flow over it. |
| stateClosing2 | The channel is being closed, no new messages will be accepted, but those already in queue will be flushed. |
| stateClosed3 | The channel was closed, or connection failed. |