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sslgoogle-cloud-platformtimeoutiotgoogle-cloud-iot
Rafał
Rafał

Reputation: 3

Google Cloud - Connection timout, TLS - handshake

I am developing a project based on the Google Cloud IoT Core platform. I want to publish telemetry data using the GSM module (SIM7020 - NB-IoT).

However, the connection time (TLS handshake) takes a lot of time (> 10 seconds) and the connection is broken by the Google server.

What is the timeout handshake?

Can I extend this timeout in IoT Core settings?. Anyone have an idea how to work around this problem with slow connections?

best regards

Upvotes: 0

Views: 1865

Answers (3)

Rafał
Rafał

Reputation: 3

After talking to Google support, it turned out that the only solution was to run your own virtual machine or use CoAP and communication over UDP. I decided to change cloud hosting to competitive.

Upvotes: 0

Achim Kraus
Achim Kraus

Reputation: 849

If your bound to UDP, you may try out cloud-iot-coap-proxy. A DTLS PSK handshake, if that complies to your security requirements, is much faster.

Upvotes: 0

Nicholas
Nicholas

Reputation: 529

You use SSL/TLS to establish a secure connection between the 2 points. To achieve this connection you need to complete a successful handshake between these points. If this handshake fails for example in your scenario because of timeout then the SSL/TLS couldn’t complete the handshake during this period. You can find more information about SSl/TLS from the organization Internet Engineering Task Force (ietf). Handshake from ietf, timeout from ietf.

For your information SSL/TLS is for TCP and DTLS for UDP.

Upvotes: 1

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