部分场景，前端连接不上websocket服务，需要从后台验证websocket服务是否能连入，判断防火墙是否开通，反向代理是否配置正确，可以使用curl测试服务器websocket服务是否正常。
分行命令
curl --include \--no-buffer \--header "Connection: Upgrade" \--header "Upgrade: websocket" \--header "Host: example.com:80" \--header "Origin: http://example.com:80" \--header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \--header "Sec-WebSocket-Version: 13" \http://192.168.200.15:29019/ws/web/WEB_4jUe3qFOyNum4neRtf5R2oqtQTVLTDad或不分行命令
curl --include --no-buffer --header "Connection: Upgrade" --header "Upgrade: websocket" --header "Host: example.com:80" --header "Origin: http://example.com:80" --header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" --header "Sec-WebSocket-Version: 13" http://192.168.200.15:29019/ws/web/WEB_4jUe3qFOyNum4neRtf5R2oqtQTVLTDad
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