How can we be sure that a socket may be closed ?

Question

dear team, it seem that when the W250 module is not too much stressed, i can close a TCP client socket as soon as i have send all data. in that case, the socket is right closed when i send the AT+SMGMT=x (x num of the socket). but when the module is highly used (TCP server is running, and some other client sockets are running), if i try to close one of the client socket immediately after sending the data, i receive some [ERROR: INVALID INPUT] message. is there any way to check the status of a specific socket ? if not, a new AT command may be useful !? something like AT+SMGMT=x? will return if the socket “x” can be closed ? if all data are send …? or i can ask differently : we send AT+SEND=X,Y (send Y data on the socket X) we send Y data ==> when we receive the OK, does it mean that ALL data are really send and we can close the socket X ? W250 firmware : 9.0.5.3 thanks, regards Phil

wizdaniel · Answer

Hi pill. AT+SMGMT=x command designed to close the socket directly. but now that command is not working in your cases. I think that your service condition seems to givelots of stress to WizFi250 module. as you know, WizFi250 is not designed to stand a lot of stress.

phil31 · Answer

Hi Daniel, where it is writing that your product is not designed for “lot of stress” !!?? your answer is really not professional !! i ask something then you reply : “you stress too much the product” !! the question is " when we receive the OK, does it mean that ALL data are really send and we can close the socket X ?" for your information, by “highly used”, i mean that a javascript refresh the web page every 2 seconds. this web page is only 2KB ! then 2 or 3 others clients (TCP or UDP) sockets may be used when required (closed soon after they finish the job ) !!

phil31 · Answer

Daniel, do you continue the support on this device ? again i’m using this module since several time. i need to support the products for my customers. thanks, regards