Bug Report: Chat & Agent Streaming Error

Support Help
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Module: Chat / Agent
Issue: Streaming responses fail due to network proxy limitations.

Observed Errors:

Chat: “Streaming responses are being buffered by a proxy in your network environment.”
Agent: “Bidirectional streaming is not supported by the http2 proxy in your network environment.”

Expected Result:
Chat and Agent should support real-time/bidirectional streaming without proxy-related interruptions.

Impact:
Streaming functionality is blocked or degraded when the application is accessed through the current network/proxy environment.

Priority: High

Steps to Reproduce

Open Chat Window and Add Prompt
It show planning or taking longer than expected

Expected Behavior

it should work without any error

Screenshots / Screen Recordings

Screenshot from 2026-09-21 19-17-32.png
Screenshot from 2026-09-21 19-17-32.png533×110 6.83 KB
Screenshot from 2026-09-21 19-16-45.pngScreenshot from 2026-09-21 19-16-40.png

Operating System

Linux

Version Information

Version: 3.21.13
VS Code Extension API: 1.128.0
Commit: e44a49c17e334d442e58bbde931d791200f014a0
Date: 2026-09-18T06:43:24.799Z
Layout: IDE
Build Type: Stable
Release Track: Default
Electron: 42.10.0
Chromium: 148.0.7778.280
Node.js: 24.18.1
V8: 14.8.178.38-electron.0
xterm.js: 6.1.0-beta.291
OS: Linux x64 6.8.0-134-generic

For AI issues: which model did you use?

Composer 2.5 Non Fast

Does this stop you from using Cursor

Yes - Cursor is unusable

5

Hey, thanks for the detailed report.

Those two lines in Network Diagnostics are a bit misleading. They show up when the first chunk of a streaming response takes longer than about 2 seconds, and for connections from India this is usually just normal latency to our streaming servers, not an actual proxy on your network. So it’s not something in your setup. This is a known issue with slow streaming from India that we’re tracking, but I can’t share an exact timeline yet.

I see you already tried cursor.general.disableHttp2: true and it didn’t help. In that case, try what has helped other users on Indian networks:

  1. Change your system DNS to 1.1.1.1 or 8.8.8.8.
  2. Install Cloudflare WARP free. It routes traffic through Cloudflare’s India edge nodes and can noticeably reduce latency.

After changing this, fully quit Cursor using File > Exit, not just closing the window, then reopen it and test in a new chat.

If it still hangs, please send:

  • The Request ID from the stuck chat hover the message > three dots > Copy Request ID
  • The email you’re logged into Cursor with

I’ll take a closer look. Let me know how it goes.