无法在httpd 2.4之后建立安全的websocket连接。
我正在与WebSocket连接
wss://domain/websockets/all?X-Atmosphere-tracking-id=0&X-Atmosphere-Framework=1.0&X-Atmosphere-Transport=websocket&X-Cache-Date=0&Content-Type=application/json&X-Atmosphere-WebSocket-Proxy=true
上述通话会返回如下错误：
failed: Error during WebSocket handshake: Unexpected response code: 501
while establishing secured websocket connection behind httpd 2.4