[A6] - AT+CIPCLOSE=ID ERROR upon AT+CIPSEND failure

[mcr-ksh]

Hardware: SoftwareSerial on A20/A6 (13, 15) baud 38400.

apparently the lib does not handle the close properly when a sending failure occurred or any other error occurs (dont know what exactly happends).

Closing the socket aka httpclient->stop(); will trigger the AT+CIPCLOSE=mux, which results in an ERR, especially if the CIPSTART was not successful. Thus the successive CIPSTART can only be closed via "CIPCLOSE" without the "=1".

My assumption:
AT+IPMUX=1 was set at some point. However, there is only one connection opened
and closing that connection will cause an ERROR when calling AT+CIPCLOSE=1.
Every other further connection is then blocked. only a "AT+CIPCLOSE", without the =1, does the trick.

[vshymanskyy]

you didn't specify any details of your hardware setup

[FabianInostroza]

Hi @mcr-ksh, look at #62 and my PR #65, I think this is the same problem, unfortunately I don't have an A6 modem to test

[vshymanskyy]

This bug is confirmed

[xvinny-zz]

Any advance on this?

[SRGDamia1]

Not that I'm aware of; I don't have one of these modules to test.