Handshake failed due to invalid Upgrade header: null 解決方案

解決方案，在  Nginx  ，location 中添加如下紅色代碼：

proxy_set_header Upgrade $http_upgrade;

proxy_set_header Connection   "upgrade" ;

 

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server {          listen  80 ;          server_name localhost;              location / {                  proxy_set_header X-Real-IP $remote_addr;                  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;                  proxy_set_header Host $http_host;                  proxy_set_header X-NginX-Proxy  true ;                    # prevents  502  bad gateway error                  proxy_buffers  8  32k;                  proxy_buffer_size 64k;                    proxy_pass http: //127.0.0.1:8080;                  proxy_redirect off;                    # enables WS support                  proxy_http_version  1.1 ;                  proxy_set_header Upgrade $http_upgrade;                  proxy_set_header Connection   "upgrade" ;          } }