LPWA Module Series
BG95&BG77&BG600L Series TCP/IP Application Note
BG95&BG77&BG600L_Series_TCP/IP_Application_Note 44 / 56
3.5.2. Send Data in Direct Push Mode
3.5.3. Retrieve Data from Remote Server in Direct Push Mode
3.5.4. Close a TCP Client
+QIOPEN: 0,0
//TCP client connected successfully. It is suggested to wait for 150
seconds for the URC
+QIOPEN: <connectID>,<result>
. If the URC
cannot be received in 150 seconds, the host could use
AT+QICLOSE
to
close the socket.
AT+QISTATE=1,0
//Query the connection state of socket service 0.
+QISTATE: 0,"TCP","220.180.239.212",8009,65344,2,1,0,1,"usbmodem"
OK
AT+QISEND=0
//Send variable-length data.
>
test1<Ctrl+Z>
SEND OK
//
SEND OK
does not mean the data has been sent to the server successfully. The
host can query whether the data has reached the server with
AT+QISEND=0,0
.
AT+QISEND=0,5
//Send fixed-length data and the data length is 5 bytes.
>
test2
SEND OK
AT+QISEND=0,0
//Query the length of sent data, acknowledged data and unacknowledged data.
+QISEND: 10,10,0
//A total of 10 bytes data has been sent, and all the 10-byte data has been
acknowledged.
OK
+QIURC: "recv",0,4
//Retrieve data from remote server.
test
AT+QICLOSE=0
//Close the connection whose
<connectID>
is 0. Depending on the
network, the maximum response time is 10 seconds.
OK
