nginx支持WebSocket

location /api/ {
    proxy_pass http://127.0.0.1:8585;
    ...
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
}

需要配置如上：

proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";

这段话

html中链接webSocket服务请求协议头是ws://