解决方案，在 nginx ，location 中添加以下红色代码：
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"; }} |