[BUG] GM_download.abort may take too much time

[CrayonSSR]

Expected Behavior

After executing the abort method, GM_download will attempt to terminate the request as promptly as possible.

Actual Behavior

GM_download will wait for the server's response head before cancelling the request, then triggers the onerror event.

Specifications

• Chromium: (120)
• TM: (Stable 5.2.0 & Beta 5.2.6198)
• OS: (Window 10 2024.05)

Script

• A simple server using python which could respond to requests with a specified duration.

  
  from flask import Flask, send_from_directory
  from time import sleep

app = Flask(name)

@app.route('/assets//') def get_image(wait_time, name):

sleep(wait_time) # seconds

return send_from_directory('assets', name, mimetype='image/png')

if name == 'main': app.run(host='0.0.0.0',port=7777,debug=True)

* Test abort cost
```js
// ==UserScript==
// @name                GM_download abort test
// @match               https://www.tampermonkey.net/*
// @connect             127.0.0.1
// @connect             *
// @grant               GM_download
// @run-at              document-start
// @version             1.0
// ==/UserScript==

// tampermonkey download mode: browser

const start = Date.now()

const downloader = GM_download({
    url: 'http://localhost:7777/assets/15/test.png',
    name: 'test/test.jpg',
    timeout: 5000,
    onerror(event) {
        console.log(`Abort cost ${( Date.now() - start - 300) / 1000}s`, event)
    },
    ontimeout(event) {
        console.log(`ontimeout cost ${( Date.now() - start) / 1000}s`, event)
    },
})

setTimeout(() => downloader.abort(), 300)

Test log

// Note: URL rule: '/assets/<wait_time(s)>/<file_name>'
// Note: Without abort, GM_download could successfuly save the file after <wait_time>
// Note: The timeout event never trigger.

// url: 'http://localhost:7777/assets/10/test.png'
// log: Abort cost 10.286s { details: {current: 'USER_CANCELED'} }

// url: 'http://localhost:7777/assets/15/test.png'
// log: Abort cost 15.082s { details: {current: 'USER_CANCELED'} }

// url: 'http://localhost:7777/assets/33/test.png'
// log: Abort cost 33.996s { details: {current: 'USER_CANCELED'} }

[derjanb]

The "Download Mode" setting is untouched ("Default")? Is this correct?

[CrayonSSR]

The "Download Mode" setting is untouched ("Default")? Is this correct?

My setting - Download Mode: Browser api

• The delay won't happen on Download Mode: Default.

• It seems that this issue only occurs in Download Mode: Browser API .

[JsGarcia5]

sorry to bother you. You're KC Enhancer's developer, right? I see your name in the script. Now that afdian is dead, where will you post updates?

[CrayonSSR]

sorry to bother you. You're KC Enhancer's developer, right? I see your name in the script. Now that afdian is dead, where will you post updates?

Afdian is dead ???

Afdian has two domains, afdian.com and afdian.net.

Are you saying that afdian.net has been abandoned.