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Add flag to server to force all clients to use DERP over WebSockets by default #9237

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deansheather opened this issue Aug 22, 2023 · 0 comments · Fixed by #9238
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Add flag to server to force all clients to use DERP over WebSockets by default #9237

deansheather opened this issue Aug 22, 2023 · 0 comments · Fixed by #9238
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Currently, Tailscale falls back to WebSocket if it sees a 4xx when trying to connect with Upgrade: derp. Some reverse proxies (like Azure Application Proxy) handle Upgrade: derp in a very silly way which circumvents this automatic detection and fallback to WebSockets (Azure redirects you to the login page?!?!?)

Add a server flag --derp-force-websockets to force all clients and agents to connect to every DERP server over websockets instead of trying Upgrade: derp first.
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feat: add server flag to force DERP to use always websockets coder/coder
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