R410M bug: zero payload UDP packet lockup

SARA AFF
1

Hi,

Once the device receives a UDP packet which does not have payload (which are commonly used as keepalive) the socket locks up: it can no longer receive new packets.

Firmware revision: L0.0.00.00.05.06 [Feb 03 2018 13:00:41]

2

Hi @akos,

I tried sending an empty UDP package using: AT+USOST=0,“IP”,PORT, 0, “”, but it didn’t really like the empty data. I got a generic CME ERROR: OPERATION NOT ALLOWED. How have you managed to send an empty UDP packet?

~Michael

3

@M.Bend
I think he means sending a message to the device, not sending from it.
Sending an empty string, from the device, is not possible.

1 Like
4

Thanks, explains. Reading is hard on the early monday morning.