在Nginx中实现WebSocket心跳检测和重连的方法通常是通过配置proxy_next_upstream和proxy_connect_timeout来实现。具体步骤如下:
proxy_next_upstream error timeout;
proxy_connect_timeout 5s;
upstream websocket_servers {
server 127.0.0.1:8080;
server 127.0.0.1:8081;
}
server {
location /ws/ {
proxy_pass http://websocket_servers;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $http_host;
}
}
通过以上配置,Nginx会在发起连接失败时尝试连接其他后端服务器,实现WebSocket的心跳检测和重连。