| Instruction | Description |
|---|---|
| AT+CIPSTATUS | Get connection status |
| AT+CIPSTART | Establish TCP connection or register UDP port |
| AT+CIPSEND | Send data |
| AT+CIPCLOSE | Close TCP/UDP connection |
| AT+CIFSR | Get local IP address |
| AT+CIPMUX | Set multiple connections mode |
| AT+CIPSERVER | Configure as server |
| AT+CIPMODE | Set transmission mode |
| AT+CIPSTO | Set timeout when ESP8266 runs as TCP server |