topic Re: Cannot construct a Request with a Request object that has already been used. in Developer Q&A Forum

Cannot construct a Request with a Request object that has already been used.

MarkusHobisch — Tue, 02 May 2023 13:42:21 GMT

Hi everyone!

I created an app function when triggered should create a new firewall.

import { CreateFirewallCommand, NetworkFirewallClient } from '@aws-sdk/client-network-firewall'; export default async () => { const clientConfig = { region: 'us-east-1', credentials: { accessKeyId: '', secretAccessKey: '', }, }; const networkFirewallClient = new NetworkFirewallClient(clientConfig); const params = { FirewallName: 'VPC Firewall 2', // eslint-disable-next-line no-secrets/no-secrets FirewallPolicyArn: 'arn‌‌network-firewall:us-east-1:123456789012:firewall-policy/my-policy', VpcId: 'vpc-0af6340303f3168d3', SubnetMappings: [{ SubnetId: 'subnet-005fedf40f2e91595', Tier: 'PUBLIC' }], }; try { const command = new CreateFirewallCommand(params); const response = await networkFirewallClient.send(command); console.log('Firewall successfully created:', response.Firewall.FirewallId); return response; } catch (err) { console.error('An error occurred:', err); throw err; } };

The problem is that I am not able to make any successful request because AWS rejects it because it was already send. I got this error code back:

I am not sure now if this is a problem within the server.js file or if the problem is somewhere else? Do you have any suggestions?

Cheers

Markus

Re: Cannot construct a Request with a Request object that has already been used.

MarkusHobisch — Wed, 15 Feb 2023 08:22:20 GMT

For better seachability I add the error code in text form:

[ERROR] /api/aws-firewall Fehler beim Erstellen der Firewall: Error: AWS SDK error wrapper for TypeError: Cannot construct a Request with a Request object that has already been used. at asSdkError (C:\Users\markus.hobisch\IdeaProjects\dynatrace-cpa\api\aws-firewall.js:5133:10) at C:\Users\markus.hobisch\IdeaProjects\dynatrace-cpa\api\aws-firewall.js:5182:21 at async C:\Users\markus.hobisch\IdeaProjects\dynatrace-cpa\api\aws-firewall.js:4726:20 at async Module.aws_firewall_default (C:\Users\markus.hobisch\IdeaProjects\dynatrace-cpa\api\aws-firewall.js:7144:22) at async Socket.<anonymous> (C:\Users\markus.hobisch\IdeaProjects\dynatrace-cpa\node_modules\@dynatrace\runtime-simulator\lib\server.js:395:53) { '$metadata': { attempts: 1, totalRetryDelay: 0 }

Re: Cannot construct a Request with a Request object that has already been used.

stefan_eggersto — Wed, 15 Feb 2023 08:27:33 GMT

Hi Markus,

I can reproduce the issue. The internal error is following:

Exception has occurred: TypeError: Cannot construct a Request with a Request object that has already been used.
  at new Request (/node_modules/undici/lib/fetch/request.js:482:15)
  at fetch (/node_modules/undici/lib/fetch/index.js:137:21)
  at fetch (/node_modules/undici/index.js:111:20)
  at /node_modules/@dynatrace/runtime-simulator/lib/server.js:1:3560

We are further looking into the issue and will keep you posted.

Re: Cannot construct a Request with a Request object that has already been used.

stefan_baumgart — Wed, 15 Feb 2023 14:59:38 GMT

Did you try your Code with Node.js or a similar platform? Can you ensure that the problem lies within the execution via the Dynatrace Serverless Platform and not with the usage of the API?

Re: Cannot construct a Request with a Request object that has already been used.

MarkusHobisch — Wed, 15 Feb 2023 15:48:13 GMT

Hi Stefan,

did not try it out on Node.js so far but I can and would let you know.

Re: Cannot construct a Request with a Request object that has already been used.

MarkusHobisch — Wed, 15 Feb 2023 16:32:56 GMT

It works on Node.js. At least I get a different error (InvalidRequestException: Resource name has an invalid format) but this is fine because I didn't checked the format so far.

Re: Cannot construct a Request with a Request object that has already been used.

stefan_baumgart — Thu, 16 Feb 2023 08:17:12 GMT

I also tried with the latest Deno installation and Chrome, and I'm also getting a different error. The error comes from calling `fetch` twice, and this looks like either a bundling issue or an execution issue on the runtime side.

Re: Cannot construct a Request with a Request object that has already been used.

stefan_baumgart — Wed, 15 Feb 2023 18:03:30 GMT

We identified the issue, and it's a bug in the simulator. This error should not appear once the function is deployed.

Re: Cannot construct a Request with a Request object that has already been used.

MarkusHobisch — Thu, 16 Feb 2023 07:46:49 GMT

Thanks for the update!