Wiki source code of How to use Domain Name instead of IP address in Server Address
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| 2 | **Note when using MQTT:** | ||
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| 6 | 1）AT+CLIENT cannot be set to NULL | ||
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| 10 | 2) AT+SERVADDR length should not exceed 21 bytes | ||
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| 14 | 3) It is not recommended to use a domain name, as it will take a long time for the MQTT service to resolve the domain name for the first time and increase power consumption. It is recommended to use IP instead of domain name. | ||
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| 18 | If you don’t know the domain name IP, you can enter the command AT+QNDS to resolve the domain name when it is not working (this process may take a long time) | ||
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| 21 | [[image:image-20220530094905-1.png]] | ||
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| 23 | Example |