WarmUp Plugin timeout issue when invoking Lambda

[tuandv3-rikkeisoft]

I am currently using Serverless WarmUp Plugin version 8.4.1.
However, when invoking the Lambda function, I consistently encounter the following error: "Socket timed out without establishing a connection within 1000 ms".
Could you please help check this issue and see if it is possible to increase the timeout to 3 seconds (3000 ms)?
Error details:
_2026-03-27T01:04:52.744Z 888bb54f-4e0f-4195-a501-ed72414ac253 ERROR Warm Up Invoke Error: fxon-api-prod-4-prod-getMaintainFunctionStatus Error [TimeoutError]: Socket timed out without establishing a connection within 1000 ms
at Timeout.onTimeout (/var/runtime/node_modules/@aws-sdk/node_modules/@smithy/node-http-handler/dist-cjs/index.js:75:23)
at listOnTimeout (node:internal/timers:605:17)
at process.processTimers (node:internal/timers:541:7) {
'$metadata': { attempts: 3, totalRetryDelay: 72 }
}
Thank you for your support.

[tuandv3-rikkeisoft]

@juanjoDiaz can you help me resolve this problem?
thanks you very much!

[hashk99]

I'm having the same issue.
As a temporary solution, I had to increase the connectionTimeout value on

const uninstrumentedLambdaClient = new LambdaClient({ apiVersion: '2015-03-31', region: '${region}', requestHandler: { connectionTimeout: 1000 } }); in the warmer.js file.

For now, I used the "postinstall": "patch-package" option in package json to override the timeout value.

Would be great to have this value configurable in the future.