ok, back with some update: The test was to connect to test.mosquitto.org and it did not work beause this site does not support TLS 1.0 which can be checked with nmap --script ssl-enum-ciphers -p 8883 test.mosquitto.org, same result for broker.emqx.io.
Does anyone know a public mqtt test broker that still support TLS 1.0?
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ok, back with some update: The test was to connect to test.mosquitto.org and it did not work beause this site does not support TLS 1.0 which can be checked with
nmap --script ssl-enum-ciphers -p 8883 test.mosquitto.org
, same result for broker.emqx.io.Does anyone know a public mqtt test broker that still support TLS 1.0?
Edit: broker.hivemq.com still supports TLS 1.0