[gnet-dev] ifconfig-like interface descriptions?

[Christian Taedcke devolo de]

Hello

i'm porting my streamingserver from normal unix sockets to gnet to use it
also in win32. gnet is a great library, but i miss one functionality: I
need the subnetmasks of the network interfaces from
gnet_inetaddr_list_interfaces().

My old code (only linux) is at the bottom of this mail.

Thanks



/**
 * @Info    saves all network interfaces
 * @Result
 * @Comment
 */
void CharpHandler::GetInterfaces() {
      struct Interface interface;


      int sock = 0;
        struct ifreq ifreq;
        struct sockaddr_in *saptr = NULL;
        struct if_nameindex *iflist = NULL, *listsave = NULL;



      //need a socket for ioctl()
        if( (sock = socket(AF_INET, SOCK_STREAM, 0)) < 0){
                perror("socket");
                return ;
        }

        //returns pointer to dynamically allocated list of structs
        iflist = listsave = if_nameindex();

        //walk through the array returned and query for each
        //interface's address
        for(iflist; *(char *)iflist != 0; iflist++){
            //copy interfacename
            strncpy(interface.name,iflist->if_name, IF_NAMESIZE);
            strncpy(ifreq.ifr_name,iflist->if_name, IF_NAMESIZE);
                //get the address for this interface
                if(ioctl(sock, SIOCGIFADDR, &ifreq) != 0){
                        perror("ioctl 1");
                        return;
                }

            saptr = (struct sockaddr_in *)&ifreq.ifr_addr;
            //set ipaddress
            interface.ipaddress = saptr->sin_addr.s_addr;

            //get netmask
            if(ioctl(sock, SIOCGIFNETMASK, &ifreq) != 0){
                  perror("ioctl 2");
                        return;
                }
            saptr = (struct sockaddr_in *)&ifreq.ifr_addr;
            //set netmask
            interface.netmask = saptr->sin_addr.s_addr;
            //save the interface
            interfacelist.push_back(interface);


        }
        //free the dynamic memory kernel allocated for us
        if_freenameindex(listsave);




}