1、保持1800秒連接不被中斷
keepalive_timeout：保持連接活躍時(shí)間
proxy_read_timeout：等待后臺(tái)服務(wù)器響應(yīng)超時(shí)時(shí)間
server {
listen 18000;
server_name localhost;

keepalive_timeout 1800s;

location /medical_records/ {
        proxy_pass http://ip:port/medical_records/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    proxy_read_timeout 1800s;
    }
}

2、代理+負(fù)載均衡：同時(shí)滿足websocket與https
upstream name_proxy {
server ip:port;
server ip:port;
}
server {
listen 443 ssl;
server_name your_domain;

    ssl_certificate      x.pem;
    ssl_certificate_key  x.key;
    ssl_session_cache    shared:SSL:1m;
    ssl_session_timeout  5m;
    ssl_protocols TLSV1 TLSV1.1 TLSV1.2 SSLv2 SSLv3;
    ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
    ssl_prefer_server_ciphers on;
    ssl_verify_client off;

# WebSocket 配置
    location /path/ {  # 代理路徑
        proxy_pass http://name_proxy/path; 
        proxy_http_version 1.1;  # 確保使用 HTTP/1.1
        proxy_set_header Upgrade $http_upgrade;  # 設(shè)置 Upgrade 頭
        proxy_set_header Connection "Upgrade";  # 設(shè)置 Connection 頭
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;  # 傳遞客戶端 IP
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  # 傳遞 XFF 頭
    }
}

3、跨域配置
#add_header 'Access-Control-Allow-Origin' '';
#add_header 'Access-Control-Allow-Methods' '';
#add_header 'Access-Control-Allow-Headers' '*';
#add_header Cache-Control no-cache;
說(shuō)明：如果是代理gateway請(qǐng)求，可以不用配置（因?yàn)間ateway一般會(huì)返回可跨域的頭）