stream {

   log_format proxy '$remote_addr [$time_local] '

                 '$protocol $status $bytes_sent $bytes_received '

                 '$session_time "$upstream_addr" '

                 '"$upstream_bytes_sent" "$upstream_bytes_received" "$upstream_connect_time"';

    include ./conf.d/*.tcpstream;

}

server{

    error_log       /opt/log/device5001_error.log;

    access_log      /opt/log/device5001_access.log proxy;

    listen 5001;

    proxy_pass device5001;

}

 tail -f /opt/log/device5001_access.log

•测试发现nginx会等待session结束才会记录到日志文件；

•session日志只是tcp层面的记录，包括session时间，发送接收字节数等等；

•session内部发送日志(比如一个socket连接建立起来以后，多次发送心跳数据）需要在应用层面才能记录；