ArangoJS 10 and NextJS 15 Fetch Failed Error: ECONNRESET

[lumic]

Hi Team

I am relatively new to NextJS and ArangoDB and have an issue with NextJS 15 SSR and arangojs 10.1.2 and I think the issue is with arangojs.

Issue

In dev mode, everything works perfectly, but once i run pnpm build & pnpm start, the server starts fine, but I get the below on a request:

FetchFailedError: Fetch failed: read ECONNRESET
at Object.fetch (test-build.next\server\chunks\ssr_ae889675..js:1:6980)
at async B.runQueue (test-build.next\server\chunks\ssr_ae889675..js:1:10963)
⨯ Error [FetchFailedError]: Fetch failed: read ECONNRESET
at Object.fetch (test-build.next\server\chunks\ssr_ae889675..js:1:6980)
at async B.runQueue (test-build.next\server\chunks\ssr_ae889675..js:1:10963) {
isSafeToRetry: null,
request: Request {
method: 'POST',
url: 'http://localhost:8529/_db/DB_NAME/_api/cursor',
headers: Headers {
authorization: 'Basic REMOVED',
'x-arango-driver': 'arangojs/10.1.2 (cloud)',
'x-arango-version': '31100',
'content-type': 'application/json'
},
destination: '',
referrer: 'about:client',
referrerPolicy: '',
mode: 'cors',
credentials: 'same-origin',
cache: 'default',
redirect: 'follow',
integrity: '',
keepalive: false,
isReloadNavigation: false,
isHistoryNavigation: false,
signal: [AbortSignal]
},
digest: '1531625992',
[cause]: TypeError: fetch failed
at async Object.fetch (test-build.next\server\chunks\ssr_ae889675._.js:1:6643)
at async B.runQueue (test-build.next\server\chunks\ssr_ae889675..js:1:10963) {
[cause]: [Error: read ECONNRESET] {
errno: -4077,
code: 'ECONNRESET',
syscall: 'read'
}
}
}

I have done some digging (as best as I can) and this only happens if I include next/cookies and have a reference to it:

import {cookies} from "next\headers"
const cookieStore = await cookies();

However, if i remove arangojs and use fetch with an external api, or use postgres it works fine, which makes me think its an issue with arangojs.

How to Reproduce

pnpm create next-app@latest my-app --yes
cd my-app
pnpm i arangojs
open page.tsx, add the "import {cookies} from 'next\headers' , make the Home function async, then at the top of the Home function, add the following:

const cookieStore = await cookies();
const query = aql`
FOR s IN [1..4]
RETURN s
`;
const cursor = await db.query(query);
const result = await cursor.next();

pnpm dev works fine, pnpm build works fine, pnpm start works, but any request fails. comment out the "const cookiestore" line and it all works

Thanks in advance

[lumic]

Apologies, here is my db function:

import { Database } from 'arangojs';

const getConnection = async () => {
   const db = process.env.DATABASE_URL;
   if (!db) throw new Error("DATABASE_URL is not set");
   console.log("Connecting to database at", db);
   try {
     const conn = new Database({ 
       url: process.env.DATABASE_URL,
       databaseName: process.env.DATABASE_NAME!,
       auth: {
         username: process.env.DATABASE_USERNAME!,
         password: process.env.DATABASE_PASSWORD!,
       },
       precaptureStackTraces: process.env.NODE_ENV == 'development',
       agentOptions: { keepAlive: true, maxSockets: 50  },
       onError: (err)=>{
         console.log(err.cause);
         console.log(err.stack);
       }
     });
 
     return {
       db: conn
     }
   } catch (error) {
     console.log("Something went wrong connecting to the database at ", db);
     throw error;
   }
 };
 
 export const {db} = await getConnection();

[lumic]

I have been doing some more testing, and it seems to only affect aql statements.

This works (with and without next/cookies):

const collection = db.collection("some-collection");
try {
  const document = await collection.document("abc123");
  console.log(document);
} catch (e: any) {
  console.error("Could not find document");
}

[apetenchea]

Hi @lumic,

As you pointed out, this most probably has something to do with the way cookies are being handled. Perhaps tweaking the credentials option might help?

See https://arangodb.github.io/arangojs/10.1.2/types/connection.CommonFetchOptions.html

That is part of the ConfigOptions: https://arangodb.github.io/arangojs/10.1.2/types/configuration.ConfigOptions.html

Which in turn, you can pass through the Database constructor: https://arangodb.github.io/arangojs/10.1.2/classes/databases.Database.html#constructor

[lumic]

Thanks for the info - I have tried all 3 options and the results are the same.

When i tested with credentials:'include' i randomly get an error:
ArangoError: Parsing for transfer-encoding of type chunked not implemented.

Yet nothing else in my code changes

R