root@owncloud:/ # sockstat -p 443                                               
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS       
www      php-fpm    10695 0  stream /var/run/php-fpm.sock                       
www      nginx      10662 3  stream -> ??                                       
www      nginx      10662 8  tcp4   *:443                 *:*                   
www      nginx      10662 11 stream -> ??                                       
www      nginx      10661 3  stream -> ??                                       
www      nginx      10661 8  tcp4   *:443                 *:*                   
www      nginx      10661 9  stream -> ??                                       
root     nginx      10660 3  stream -> ??                                       
root     nginx      10660 8  tcp4   *:443                 *:*                   
root     nginx      10660 9  stream -> ??                                       
root     nginx      10660 10 stream -> ??                                       
root     nginx      10660 11 stream -> ??                                       
www      php-fpm    8481  0  stream /var/run/php-fpm.sock                       
www      php-fpm    8450  0  stream /var/run/php-fpm.sock                       
root     cron       5792  4  dgram  -> /var/run/logpriv                         
mysql    mysqld     5777  19 stream /tmp/mysql.sock                             
root     php-fpm    5649  8  stream -> ??                                       
root     php-fpm    5649  10 stream -> ??                                       
root     php-fpm    5649  11 stream /var/run/php-fpm.sock                       
root     syslogd    5591  4  dgram  /var/run/log                                
root     syslogd    5591  5  dgram  /var/run/logpriv