Recurring "Duplicate request id" error (code 103) — stale regionEnv=cn cache routes India users to China servers

[shah786628]

Bug Report: Recurring "Duplicate request id" Error

Environment

• OS: Windows 25H2
• Location: India (IST timezone)
• AccountID: 183012 (from qodercli.log)
• Qoder Version: Latest

Error Message

error: code = 103 message = {"code":"103","message":"Duplicate request"} details = []

Root Cause (confirmed)

cache.json persists regionEnv = "cn" (China) for users in India.

Failure chain:

1. regionEnv = "cn" — India user routed to China NES node
2. NES latency spikes to 400ms+
3. Client times out, retries same request
4. Server receives duplicate request IDs, returns error code 103

Cache File Evidence

Before fix (cache.json):

• regionEnv: cn
• NES latency: 193 ms
• Inference latency: 192 ms
• Center latency: 170 ms

After manual cache clear:

• regionEnv: '' (reset, re-probed on next start)

Fix log:
[2026-05-18 15:05:06] cleared cache.json regionEnv=cn->''
[2026-05-18 15:05:06] cleared config.json env=local->''
[2026-05-18 15:05:06] cleared region-config-cache.json
[2026-05-18 15:05:06] network: api2=PASS center=PASS

Affected Files

• %APPDATA%\Qoder\SharedClientCache\cache\cache.json — regionEnv sticks as "cn"
• %APPDATA%\Qoder\SharedClientCache\cache\config.json — env sticks as "local"
• %APPDATA%\Qoder\User\region-config-cache.json — stale node endpoints

Frequency

Recurring — happens repeatedly, requires manual cache clearing each time.

Requested Fix

1. Auto-detect stale regionEnv on startup — re-probe if cached region mismatches IP geolocation
2. Invalidate region cache when latency exceeds ~300ms threshold
3. Add a "Reset Region / Re-probe Servers" button in Settings UI