How can I diagnose a WebSocket bad handshake when using Cloudflare Tunnel?

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Grade: Education Subject: Support

Asked by: USER7449

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USER7298

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(359)

To diagnose a WebSocket bad handshake, check your Cloudflare Tunnel logs for specific error messages. Inspect the WebSocket handshake requests and responses using browser developer tools or tools like `wsdump`. Ensure your origin server is correctly configured to handle WebSocket connections and that Cloudflare's SSL settings are appropriate for your setup.

Answered on 25 Agustus 2025

How can I diagnose a WebSocket bad handshake when using Cloudflare Tunnel?

Question

Answer (74)

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