配置Nginx支持长轮询

http {
    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }
}

server {
    location /your-api-url/ {
        proxy_pass http://127.0.0.1:9000/your-api-url/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Host $http_host;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_buffering off;
        proxy_ignore_client_abort off;
    }
}