原来普通nginx代理正常访问，改用WAF后，后端请求500

waf配置子站点 192.168.31.114 的nginx ，114nginx里面配置了一个location，url /v1 代理到 192.168.31.31，现在已访问v1的接口，就会500错误

	location /v1/  {
		proxy_pass http://192.168.31.31:8100/;
		proxy_set_header Host $host:$server_port;
		proxy_http_version 1.1;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection "upgrade";
		proxy_ignore_client_abort on;
	}

贴一下 ng 访问日志和错误日志