websocket报错

Question

这个错有大佬知道为什么吗？偶尔发生
WebSocket connection to 'wss://xxx.xx.xxx.xx/socket.io/?EIO=3&transport=websocket&sid=b4690371-dfc8-45ae-8c1c-4e97d0cb2931' failed: Error in connection establishment: net::ERR_ADDRESS_IN_USE