Some (but not all) static files fail to be served - ERR_CONTENT_LENGTH_MISMATCH

Issue

Setup:

• Deno Version: 1.17 (updated today)
• v8 Version: Not sure, the one shipped with Deno 1.17?
• Typescript Version: 4.5
• Opine Version: 2.0.0

Details

I am using Opine to serve my Angular application’s static files. Angular’s “dist” folder contains :

- index.html (2.2 KB)
- main.js (182 KB, development version, un-minified)
- polyfill.js (44 KB)
- runtime.js (1 KB) 
- styles.css (7.7 KB)

My server code :

import { opine, serveStatic } from "https://deno.land/x/opine@2.0.0/mod.ts";
import { distDir } from "./utils.ts"

console.log(`distDir = `, distDir); // Logs "distDir =  D:\dev\Dwiki\front\dist", that's correct

const app = opine();

app.use(serveStatic(distDir)); 

app.get("/", (req, res) => res.sendFile(distDir + "/index.html"))

await app.listen(8090);

console.log(`App listening on http://localhost:8090`);

Result :

When I localhost:8090, some files get loaded, some don’t :

- index.html (2.2 KB) --> OK 200
- main.js (182 KB) --> (failed)net::ERR_CONTENT_LENGTH_MISMATCH
- polyfill.js (44 KB)--> (failed)net::ERR_CONTENT_LENGTH_MISMATCH
- runtime.js (1 KB) --> OK 200
- styles.css ( 7.7 KB) --> OK 200

No error in the terminal or in the browser’s console. All that’s displayed in my terminal is :

distDir = D:\dev\Dwiki\front\dist App listening on http://localhost:8090

If I serve my Angular app with ng serve, it displays correctly.

I can see the content of index.html, runtime.js and styles.css in the browser’s network tab. Not sure why some files are served correctly by Deno/Opine, and some (always these two) get (failed)net::ERR_CONTENT_LENGTH_MISMATCH

EDIT

I noticed the two files that fail to be served are also the two heaviest of the lot. I have updated my question, adding the weight of each file, above. It looks like small files (7 KB, 1 KB, 2 KB) are being served normally, but heavier files (44 KB, 182 KB) get ERR_CONTENT_LENGTH_MISMATCH

[xyzshantaram]

@cmorten – Here you go! https://github.com/xyzshantaram/opine-content-length-bug

Sorry I couldn’t work on it last year 😉

[jeremythille]

For the record, I still haven’t tried @cmorten’s fix, because I’m still trying to code a little server using native Deno code (for learning purposes, I want to understand how Deno works before using libraries), and I have the same issue without Opine.

For that matter, I have just opened a similar issue on Deno’s repo: https://github.com/denoland/deno/issues/13362

So… is it an Opine, or a Deno issue after all? 😃

EDIT

It is a “me” issue! I forgot to encapsulate the inner await in an anonymous function, it works now. Sorry folks.