Is it possible to change browser from chromium?

[p1k4-piyush]

The chromium browser, which is used for submit and login doesn't work with cloudfare.
The web-page gets stuck in an infinite loop of verification where it reloads before it can verify with cloudfare. Almost every other browser (including google chrome itself) doesn't face this issue.
Playright supports firefox as well as google chrome. Using any of those browsers will fix the issue.

[searleser97]

There is a way to modify the code so that it can connect to your existing browser instance via Browser Protocol, but I have not implemented that feature, haven't had the time for it unfortunately, but I accept contributions, if you would like to make that modification

[searleser97]

@pride-k would you like to contribute for this one ? I am getting very low availability lately

[p1k4-piyush]

I can't find a simple way to make the change. I am a novice developer and can't really do more than that.

[searleser97]

actually I believe you can do amazing stuff @pride-k , being novice is not a limit, since you are already involved in this world of programming, I am sure you will do just great diving into some unknown code. And you will learn a lot in the process, I also did this when I was a novice (Probably I am still a novice though) so is not the most perfect code I have written either, "but works" and for this project that is enough, so, if you ever decide to contribute, you are welcome, I have accepted many other PRs as you can see, hope that increases your trust in yourself.

[p1k4-piyush]

I have looked into this, the real reason seems to be a little complicated.
Codeforces uses cloudfare, which, unlike I thought doesn't rely exclusively on capta. The issue isn't really with chromium, the issue is with playwright.

With a bit editing to npm playwright code on your machine, and the code, you might be able to pull this off, specially cause you are a human at the end of the way who is submitting who can easily pass capta.

This effort is simply not worth it for me as it is pretty easy to copy and paste on codeforces

[p1k4-piyush]

There are blogs on the net talking about how to bypass cloudfare with playwright, you might be able to mimic those even by ignoring capta (which is probably the hardest part).

[searleser97]

if we connect directly to the instance of chrome-based browser that the user actually use regularly via CDProtocol, then the user could bypass that captcha if it ever comes up, but I think it usually just comes up when using a dev/experimental environment of chrome which is what cpbooster is using right now, but if we change that as I suggest, then that cloudfare thing you mention should not be an issue, it will work just like your "copy pasting" process to your actual/real/default browser (but even faster).

[searleser97]

This is what I am talking about https://playwright.dev/docs/api/class-browsertype#browser-type-connect-over-cdp

[p1k4-piyush]

what you are saying is correct
https://www.zenrows.com/blog/playwright-cloudflare-bypass#how-cloudflare-works

• User-Agent Analysis: That is a string that identifies the browser or device requesting a website. Scrapers often use generic or easily recognizable User-Agent strings, which Cloudflare can detect.

using user browser might be able to bypass this