Streaming SSE Mid-Turn Disconnect (ECONNRESET / ETIMEDOUT / ERR_STREAM_PREMATURE_CLOSE)

Long reasoning turns (>60s TTFT on reasoning models) get dropped by NAT gateways, serverless idle timeouts, or upstream TCP resets without keep-alive heartbeats.

1. Immediate Code & SKU Fix

Replace With SKU: cloudflare-ai-gateway + stream keepalive retry wrapper

Install Command: npm install openai@latest

Required Env Vars: CF_AIG_TOKEN

const client = new OpenAI({ timeout: 180_000, maxRetries: 3 }); // Enable SSE stream + idempotent request-id header

2. Verified Hot-Swap Fallback Route

JTBD: llm-gateway

Primary: cloudflare-ai-gateway → Fallback: openrouter

liveHealth: operational · autoActOk: true

Compliance blocks Anthropic

GET /api/rescue JSON (<2 KB)Falsify Pick (/api/falsify)

Matched Error String Signatures (5)

ECONNRESETETIMEDOUTERR_STREAM_PREMATURE_CLOSEUND_ERR_SOCKETsocket hang up

curl -s "https://getagentdepot.com/api/rescue?q=ECONNRESET"

Browse All 28 Agent Runtime Rescue Cards