Hi
It seems that the default minium DTLS handshake timeout is about 1 second. That means, there is a retransmission if a response isn't received within this timeout. In NB-IoT/LTE-M this leads to many unnecessary retransmission:
The server is configured to a higher timeout, but how can I configure the nRF9151 to be more patient during handshake? Since NB-IoT has latencies up to 10 seconds, retransmitting every second does barely make sense.
I have tried a lot of socket options so far, but none seem to work. Zephyr itself offers TLS_DTLS_HANDSHAKE_TIMEOUT_MIN, but this one is not supported on offloaded sockets. Am I missing something? It would be a pitty if I have to switch to mbedTLS, because of a missing handshake timeout.
NCS version: v3.0.2
Best regards
Samuel