WebSocket failed: Error during WebSocket handshake: Unexpected response code: 400

nginx 添加如下三行配置     proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "upgrade";   *** 代理哪個端口就配在哪個端口*** 參考：https://blog.csdn.net/cai454692590/article/details/9

>>阅读原文<<