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1. Summary Of Command Result <errcode>

 

 

0 Success
1 SSL alert
2 Unknown error
3 Busy
4 Connection closed by server
5 Timeout
6 Transfer failed
7 File not exists or any other memory error
8 Invalid parameter
9 Operation rejected by server
10 Network error
11 State error
12 Failed to parse server name
13 Create socket error
14 Connect socket failed
15 Close socket failed
16 SSL session closed
17 File error, file not exist or other error.
421

Server response connection time out, while received error code 421,

you need do AT+CFTPSLOGOUT to logout server then AT+CFTPSLOGIN again for further operations.

 

 

 

 

2. Summary Of Unsolicited Result Codes

 

+CFTPSNOTIFY:PEER CLOSED

When client disconnect passively, URC “+CFTPSNOTIFY: PEER CLOSED”  will be reported,

then user need to execute AT+CFTPSLOGOUT and login again.

 

 

 

 

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