getSignedUrl from @aws-sdk/s3-request-presigner doesn't return

Question

In my nodejs service I've a function like this one
```
...
import { getSignedUrl } from '@aws-sdk/s3-request-presigner'
import { S3Client, GetObjectCommand } from '@aws-sdk/client-s3'
...
async getPreSignedUrl(Key: string, Bucket: string): Promise {
    try {
      const command = new GetObjectCommand({ Key, Bucket })
      await this.s3Client.send(command)

this.logger.log(`Before`) <----- I can see this

const signedUrl = await getSignedUrl(this.s3Client, command, {
        expiresIn: this.configService.get('AWS_PRESIGNED_URL_EXPIRATION_SECONDS', 300),
      })

this.logger.log(`Pre signed url: ${signedUrl}`) <----- never reach this point
      return signedUrl
    } catch (error) {
      this.logger.error(
        `Error while retrieving pre signed url from AWS for object ${Key} and bucket ${Bucket}. Error details: ${JSON.stringify(
          error,
        )}`,
      )
      throw error
    }
  }
```

Regularly happens that `getSignedUrl` never return and the caller stay there waiting for something...   
If I restart the pod (where the service lives), the application start to work fine. After a while, after some hours, again same behaviour. 
No error caught, nothing in the application log...  
I enabled server access logging and cloud trail data events, but nothing there for that call.
What would you do to make a step toward a solution?

IBAtulAnand · Answer

The request to "getSignedUrl" seems to hang and not return at all. To troubleshoot further, you can try to:
1. Check if the log timestamp in "application log", "S3 Server access log" and "Cloudtrail data events" matches. This can help to find out till what point does the request passes through and where it's getting stuck.
2. Check if there are any network-related issues (firewall or network configuration) between your application and AWS S3.
3. Check if there's any memory leak or resource exhaustion in the pod where your application is deployed. (This could be possible since the application is working fine when the service is restarted.)
4. Try implementing a "Retry or Timeout" mechanism in the code to see if that resolves the issue.

getSignedUrl from @aws-sdk/s3-request-presigner doesn't return

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