derp seems to be its own protocol. tailscale seems to prefer websocket transport for derp frames: https://github.com/tailscale/tailscale/blob/505f844/derp/derp

derp seems to be its own protocol. tailscale seems to prefer websocket transport for derp frames: https://github.com/tailscale/tailscale/blob/505f844/derp/derphttp/derphttp_client.go#L5 https://github.com/tailscale/tailscale/blob/505f844/derp/der...