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Network L5 NETWORK-1488 · 11 min

A Cloudflare Tunnel upgrade restores websockets and one path still drops because an intermediate proxy resets idle HTTP/2 streams at a shorter timer

The tunnel is healthy, but a middle proxy times out upgraded streams earlier than the edge expects.

NetworkFoundation OpsLevel 5Free11 min
Scenario

WebSocket sessions still die after a cloudflared upgrade, but only through one proxy path.

What to check first
  • Identify the primary failure signal in the The Tunnel Stayed Up and the Middle Proxy Grew Impatient Before the Conversation Was Done scenario.
  • Separate visible symptoms from the underlying technical dependency.
  • Describe the safest recovery path and the follow-up prevention work.
Checking checklist
  1. Summarize the current impact and the last known change.
  2. Collect direct evidence from logs, runtime state, and configuration before changing anything.
  3. Separate immediate recovery from permanent prevention work.
Recovery and prevention

Compare idle timers between edge, tunnel, and middle proxy before rolling back.

Questions worth viewing together
Should I translate commands, logs, or product names?

No. Keep commands, logs, file names, APIs, and product names unchanged, then explain the reasoning in the selected UI language.

What should the answer focus on?

State the root cause, the evidence that supports it, and the safest recovery direction.

Why can the scenario remain in the original language?

The source scenario is treated as an incident artifact. Guidance, checklist, hints, and explanations can be localized around it.