Deno Mongo Atlas Reproduce

Repo for reproducing error encountered when using Mongo Node Driver in Deno.

At first, operations performed using the driver succeed, but then after a few minutes, a ECONNRESET error is thrown which crashes the process.

Context

• this issue, specifically this comment
• also this issue which desribes the same issue

Setup

I was only able to replicate on a Atlas Serverless Cluster, which does not have a free tier, and I don't want to post credentials on a public repo and run up a bill.

You'll need to setup an Atlas Serverless Cluster. One can be setup with zero config on the Atlas Dashboard.

When your Serverless Cluster is spun up, Click the ellipsis and "Load Sample Dataset" into the Serverless Cluster. This will take a minute or two.

Finally, create a user that has access to the Serverless Cluster. Use those credentials in your connection string.

Steps to Reproduce

Reproduced with:

deno 1.35.0 (release, aarch64-apple-darwin)
v8 11.6.189.7
typescript 5.1.6

Make sure to set MONGO_URL to the connection string copied from the Atlas Dashboard. It will look something like mongodb+srv://<username>:<password>@<cluster-name>.<lb>.mongodb.net/?retryWrites=true&w=majority

You can also set PORT to the port you would like to listen on. Useful if you're comparing servers side-by-side

• Start the server either by cloning this repo and running deno task start or simply run deno run --allow-read --allow-sys --allow-net --allow-env https://raw.githubusercontent.com/TillaTheHun0/deno-mongo-atlas-repro/main/mod.js
• navigate to http://localhost:8080 and confirm the server returns the JSON docs retrieved from Mongo Atlas Cluster
• wait ~11m, keeping the server running
• navigate to http://localhost:8080 and observe the server crashes with a ECONNRESET error similar to:

error: Uncaught Error: read ECONNRESET
  at __node_internal_captureLargerStackTrace (ext:deno_node/internal/errors.ts:91:11)
  at __node_internal_errnoException (ext:deno_node/internal/errors.ts:139:12)
  at TCP.onStreamRead [as onread] (ext:deno_node/internal/stream_base_commons.ts:207:24)
  at TCP.#read (ext:deno_node/internal_binding/stream_wrap.ts:225:18)
  at eventLoopTick (ext:core/01_core.js:183:11)

Run with Ping

To perform a periodic ping of the MongoDB cluster, set PING to the number of milliseconds between pings ie. 60000 for one minute interval.

By default, no ping is performed.