有人用cloudfoundry部署过nodej(socket.io)项目吗？下面是出错提示

chrome下跟踪： WebSocket connection to 'ws://showenchat.cloudfoundry.com/socket.io/1/websocket/Pv8TlUGM8UcI4Gr76BXo' failed: Unexpected response code: 502

socket.io中debug信息：debug: client authorized info: handshake authorized Pv8TlUGM8UcI4Gr76BXo debug: setting request GET /socket.io/1/websocket/Pv8TlUGM8UcI4Gr debug: set heartbeat interval for client Pv8TlUGM8UcI4Gr76BXo warn: websocket connection invalid info: transport end (undefined) 求高手指点。