\e [mode]
This enables error trapping for client requests. The default mode is 0 (off).
| mode | behavior |
|---|---|
| 0 | When a client request has an error, by default the server clears the stack. Appropriate for production use as it enables the server to continue processing other client requests. |
| 1 | The server suspends on an error, and does not process other requests until the stack is cleared. Appropriate for development: enables debugging on the server. |
| 2 | Dumps stack to stderr for untrapped errors during request from a remote. (Since V3.5 2016.10.03) |