[010560] MQTT init success!
[010560] Loading the CA root certificate ...
[010590] ok (0 skipped)
[010590] Connecting to /a1hLygNX09G.iot-as-mqtt.cn-shanghai.aliyuncs.com/1883...
mbedtls_net_connect 250: getaddrinfo fail- errno: 0
[010690] failed ! net_connect returned -0x0052
[010690] ssl_disconnect
[010690] IOTX_CONN_CLOUD_FAIL
[010690] handle is NULL
[010690] TCP or TLS Connection failed
[010690] iotx_mc_connect failed
[010790] handle is NULL
[010790] mqtt disconnect!
[010890] mqtt release!
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