Looking Up a Port Number by Name

NAME
       getservbyname - get service entry

SYNOPSIS
       #include <netdb.h>

       struct servent *getservbyname(const char
              *name, const char *proto);

struct servent {
   char  *s_name;
   char **s_aliases;
   int    s_port;
   char  *s_proto;
}

• s_port: port number for the service given in network byte order