Cursor chat/completion/agent traffic hits overseas services. Browser works, Cursor times out—usually the editor isn’t proxied. Prefer Tun; otherwise set HTTP proxy inside Cursor.
Overview: Tun & AI; Tun failures: start failed.
Tun or in-app proxy
| Path | Best when | Watch for |
|---|---|---|
| Tun | Daily use, want one switch | Enable, restart Cursor, watch connections |
| In-app proxy | Tun blocked by policy | Wrong port, DIRECT rules, system-proxy myths |
Tun: enable, restart Cursor, watch connections.
In-app:
127.0.0.1 + mixed port (ports). Still unused: wrong port, DIRECT rules (routing), or system proxy myths (system proxy).
Acceptance
- One short chat/completion with connection hits.
- Separate login vs completion failures.
- Slow/drops: nodes/peak (latency, slow speed).
DIRECT overreach
Broad DIRECT patches can hit API hosts—tighten (DIRECT rules). CLI issues belong in Claude/Codex posts.
Stop
Don’t stack Tun + in-app without verifying. Region issues: ChatGPT. Builds: download center.