AT+QISEND=0,0
+QISEND:
17 after 17,17,0, 17 after sending byte 17,
17 after server receiving 17 bytes,
0 after it means no data received
AT+QIOPEN=1,0,"TCP","220.180.28.22",8305,0,0
1 represents the activated scene
0 is the road, the number of connections
8305 The 0 behind the server port
represents the automatically allocated port
The 0 behind it represents the connection There are 4 modes of entry
Query status
AT+QISTATE=1,0