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Save a9udn9u/85e0c8e863db85c5b62320766bd7b2e9 to your computer and use it in GitHub Desktop.
| import json | |
| import re | |
| from mitmproxy import http | |
| url_pattern = re.compile(r"^.*\.nvidiagrid.net/v2/session") | |
| user_agent_pattern = re.compile(r"(Mozilla\/[\d\.]+) \(.+?\)") | |
| def request(flow: http.HTTPFlow) -> None: | |
| # Check if the request matches the regex pattern | |
| if url_pattern.match(flow.request.pretty_url): | |
| flow.request.headers['nv-device-os'] = 'WINDOWS' | |
| flow.request.headers['sec-ch-ua-platform'] = '"WINDOWS"' | |
| flow.request.headers['sec-ch-ua-platform-version'] = '14.0.0' | |
| if "user-agent" in flow.request.headers: | |
| flow.request.headers["user-agent"] = user_agent_pattern.sub( | |
| r'\1 (Windows NT 10.0; Win64; x64)', | |
| flow.request.headers["user-agent"]) | |
| if flow.request.headers.get("content-type") == "application/json": | |
| try: | |
| body = json.loads(flow.request.content) | |
| if body.get("sessionRequestData", {}).get("clientRequestMonitorSettings", None) is not None: | |
| body["sessionRequestData"]["clientRequestMonitorSettings"] = [ | |
| { | |
| "heightInPixels": 1440, | |
| "framesPerSecond": 120, | |
| "widthInPixels": 2560 | |
| } | |
| ] | |
| flow.request.content = json.dumps(body).encode("utf-8") | |
| except json.JSONDecodeError: | |
| pass | |
| function FindProxyForURL(url, host) { | |
| var proxy = "PROXY <your proxy server IP>:<your proxy server port>"; | |
| if (/^https:\/\/.+\.nvidiagrid.net/.test(url)) { | |
| // Should only proxy /v2/session, but the URL path is removed by Chrome | |
| return proxy; | |
| } | |
| return "DIRECT"; | |
| } |
I'm having the same issue. I tried it with a Mint 22.1 Live ISO with persistence on a USB3.0 connected HDD. The games start fine with 1440p (H.264, 8-bits too), but then they drop to 1080p and even lower. Mitmproxy shows that the proxy is filtering nvidiagrid.net as expected. I've tried Google Chrome and Microsoft Edge stable, and I've had the same issue with both. I also tried lowering the frequency to 60 Hz instead of 120 Hz (my screen supports 165 Hz) and disabling V-Sync in different games (C2077, Outlaws, BG3, etc.), which seemed to last a few seconds more, but didn't help either at the end.
I'm wondering if it could be a performance bottleneck with mimproxy on my PC, which isn't the newest, and also the fact that it's not a full Linux install? Of course, GFN runs fine with the same PC at 1440p under W10 with a 1Gbps internet connection.
@lordgreg the reason why nvidia disabled in on linux is because support for video hardware decoding support is very patchy. You must absolutely have it enabled in chrome, or else you'll have terrible lag and resolution will drop.
Go to chrome://gpu/ in Chrome and look if the Video Acceleration Information section is populated.
This script does not seem to work anymore.
Can anyone confirm if this works?
Yes, I use this almost every day to get 2560x1440 in destiny 2.
This script does not seem to work anymore. Can anyone confirm if this works?
Confirmed to work.
how do you use it in the chrome then in fullscreen mode? how do you prevent when escape is being pressed that you dont get thrown out of full screen?
btw, this looks okay:
Additionally,
I've tested two browsers, Chrome and Brave from Flatpak, both having GPU Acceleration enabled, the installed RPM version of google chrome. All 3 of them yielded exactly the same result, lowering the resolution to unbearable 720 as soon as I started moving.
Unsure what is causing this, maybe my graphics card, maybe some entry missing under gpuinfo.
I'll probably give up eventually and reboot to windows when I'll want to play, or just move to boosteroid.
Thank you all for the suggestions and support :)
Is there any way to force 10 bit color support? Btw, the script for me works fine, 2k and 120 fps.
btw, this looks okay:
No it does not. "Video Decode" here, means that the feature is enabled. As I wrote, you need to have codecs listed in Video Acceleration Information
hi @kubrickfr and thank you for your feedback. Can you please post a screenshot on how this looks on your side?
Thank you in advance! 👍
I have tested this with the Nvidia GeForce app, Microsoft Edge and Google Chrome.
I have followed the guides completely, but it still isn't working.
The problem is that the requests the script intercepts, doesn't have content, so it can't replace that.
I have tried just changing the script so it just replaces the headers, and I see it getting replaced with "WINDOWS", but this doesn't change anything.
Could it be a regional thing?
I am from Denmark.
I have tested this with the Nvidia GeForce app, Microsoft Edge and Google Chrome.
How do you run Microsoft Edge on Linux? This hack is to allow Linux users to run at resolutions above 1080p, if you're already on Windows, this will do nothing for you.
I have tested this with the Nvidia GeForce app, Microsoft Edge and Google Chrome.
How do you run Microsoft Edge on Linux? This hack is to allow Linux users to run at resolutions above 1080p, if you're already on Windows, this will do nothing for you.
https://www.microsoft.com/en-us/edge/download?form=MA13FJ
You can just download it here. There is a deb file.
It is also available as a Flatpack on Flathub.
Ok, I didn't know that. I'm using it with the EU Central servers, it works well for me.
This is my GET to https://prod.cloudmatchbeta.nvidiagrid.net/v2/session
GET /v2/session HTTP/1.1
Host: prod.cloudmatchbeta.nvidiagrid.net
Connection: keep-alive
nv-client-type: BROWSER
authorization: ....
sec-ch-ua-platform: "WINDOWS"
x-device-id: 5cb52e94-c699-43bd-8e32-6d018420c64d
sec-ch-ua: "Not)A;Brand";v="8", "Chromium";v="138", "Google Chrome";v="138"
sec-ch-ua-mobile: ?0
traceparent: 00-12da1eb766e07aabde28b923189007e8-c8cf635b03a8dcd1-01
nv-client-id: ec7e38d4-03af-4b58-b131-cfb0495903ab
nv-device-type: DESKTOP
content-type: application/json
nv-device-os: WINDOWS
nv-device-model: UNKNOWN
nv-client-streamer: WEBRTC
nv-browser-type: CHROME
nv-client-version: 2.0.75.146
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36
nv-device-make: UNKNOWN
Accept: /
Origin: https://play.geforcenow.com
Sec-Fetch-Site: cross-site
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Accept-Encoding: gzip, deflate, br, zstd
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
sec-ch-ua-platform-version: 14.0.0
And this is the response
HTTP/1.1 200 OK
cache-control: private
content-type: application/json
server: Microsoft-IIS/10.0
x-aspnet-version: 4.0.30319
x-powered-by: ASP.NET
access-control-allow-origin: *
access-control-allow-headers: Content-Type, Authorization, Connection, User-Agent
access-control-allow-methods: GET, POST, PUT, DELETE, OPTIONS
date: Thu, 26 Jun 2025 08:45:58 GMT
content-length: 199
set-cookie: SERVERID=pm10_192_13_22; path=/
{"sessions":[],"requestStatus":{"statusCode":1,"statusDescription":"SUCCESS_STATUS","unifiedErrorCode":0,"requestId":"59d5bc54-247e-4a6a-8531-1ec3c3b41e25","serverId":"NP-SOF-02","countryCode":null}}
I feel like I have tried everything at this point. I am not sure what is wrong here.
It's normal for most requests to not match the criteria, only one specific request at the start of the gaming sessions will be modified.
@kubrickfr I feel like this is not really explained well anywhere. I was looking in the settings of GeForce Now, and it consistently showed 60 FPS and 1200p as max.
I have been trying this for so long.
@SebastianFalborg
Settings:
In-game stats:
Again, do check that you have video acceleration properly enable in chrome
@kubrickfr Sorry I was not clear. I understand how it works now.
I am getting 1440p 120fps in Witcher 3, and everything works.
But I was just frustrated because I have been trying absolutely everything to get the settings to show 1440p.
I don't feel like it was very well explained that it would look wrong in the settings, but correct in the game.
https://chromewebstore.google.com/detail/modify-http-header/pefdbdgalcpplfidblkgpjlpggfepipd
Also works... .*\.(geforcenow\.com)|(nvidia\.com)|(nvidiagrid\.net)|(geforce\.com)
This leads to a playable 1440p at 45mbps... at 75mbps the input latency is rediculously high. On the same machine with wIndows, I can comfortably run 100mbps, strange as the fast.com loaded latency speed tests are very close between OSs. I tried Proton unsuccessfully.
@FossPrime the reason why you're seeing high input latency is most likely because you don't have hardware acceleration.
See my previous comments: this one, that one
Nice that we don't need mitmproxy any more!
https://chromewebstore.google.com/detail/modify-http-header/pefdbdgalcpplfidblkgpjlpggfepipd
Also works...
.*\.(geforcenow\.com)|(nvidia\.com)|(nvidiagrid\.net)|(geforce\.com)This leads to a playable 1440p at 45mbps... at 75mbps the input latency is rediculously high. On the same machine with wIndows, I can comfortably run 100mbps, strange as the fast.com loaded latency speed tests are very close between OSs. I tried Proton unsuccessfully.
Any chance you could share more info on what you put on the headers? I've added "Chrome OS" & "CHROMEOS" but unable to identify the others but t;s not currently working thanks :)
Hi. No, I, sadly have this issue without any package loss or higher ping. Actually, with fibreoptics, my ping is at constant 5ms connected to the Frankfurt server. I even tried Warsaw, with the same result. I tried different games, same result. Also tried Brave, Chrome. No changes. :(