IOT core clientID

Question

Hi

Every time, a device connects to the IOT core a different clientID (i.e. assignedClientIdentifier) is given. Unlike firebase, there is no token given. So,
can clientID value be fixed irrespective of repeated connect/disconnect to IOT core and issue a JWT token for that device during every connect/re-connect?

Thanks
Suresh

Answer

Hi,

I assume that you are using the AWS IoT Device SDK for Javascript v2 and using the custom authorizer approach. You can override the randomly assigned clientId (see [here](https://repost.aws/questions/QUArVx9Pq4RZWppIKF0_vGXw/aws-iot-core-sample-assignedclientidentifier)  for more details--not the same ask but gives more context on the client build process) by setting the `clientId` value as such:

```javascript
// ...
builder.withConnectProperties({ keepAliveIntervalSeconds: 120, clientId: "someValue" });
// ...
```
What does your client builder look like today?

IOT core clientID

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