Nginx常见配置
应公司需求 最近修改了nginx 配置：透传客户端IP和端口给后端服务
（PHP）
fastcgi_param X-Real-IP $http_x_forwarded_for;
fastcgi_param X-Real-PORT $remote_port;
（proxy_pass）
proxy_set_header X-Real-IP$http_x_forwarded_for;
proxy_set_header X-Real-Port $remote_port;
支持跨域：
add_header "Access-Control-Allow-Headers" "Content-Type, *";
add_header "Access-Control-Allow-Origin" "$http_origin";
add_header"Access-Control-Allow-Credentials" "true";
add_header"Access-Control-Allow-Methods" "GET, OPTIONS, POST";
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