The root purpose of my project is to transfer data to Blynk using a modem SIM7020E and NB-IOT network.
Therefore I adapted the fantastic TinyGSM library to working with modem SIM7020E and features TCP App, TLS …
But i have facing a strange Blynk behavior using TLS connection to blynk-cloud.com:443.
Connection is success but app receiving from server reconnect message (29000100113133392E35392E3230362E313333003830 = BlynkCmd 41, 188.8.131.52:80)
After that TLS connection cannot establish because port 80 is assigned instead of 443.
Why server trying to redirect client to unsecured connection? Could this be related with high latencies and low speed in NB-IOT networks?
As a work around can use connection to 184.108.40.206:443 instead of blynk-cloud.com:443, in this case, the redirect does not occur