Why can’t my devices connect to the protocol adapter endpoints of the Bosch IoT Hub?
This can have various reasons. We recommend to increase the information or diagnosis level of your devices in order to get more information about what exactly goes wrong.
Very often this kind of issues are caused by failures establishing a secure connection (TLS handshake).
Please make sure:
The devices support TLS1.2 or above. For details see Security.
The devices can afford the size of the server side certificate. This can be more than 4KB due to the fact that we use full certificate chains there.
The devices can complete the TLS handshake within 60s.