int SimpleTextFrame::buildDataToSend(char *buf)

{

    //code est un entier, msgSize aussi, déjà initialisés

    //msg est une string

    memcpy(buf,&code,sizeof(int));

    memcpy(buf+sizeof(int),&msgSize,sizeof(int));

    strncpy(buf+2*sizeof(int),msg.c_str(),msgSize*sizeof(char)+1);



    return (2*sizeof(int)+msgSize*sizeof(char)+1);

}



...

UDPpacket *pack = SDLNet_AllocPacket(SGNE_MAX_MSG_LENGTH);

if (pack != NULL)

{

    int len = frame->buildDataToSend((char*)pack->data);

    pack->channel = channel;

    pack->len = len;

    pack->address = address;



    ok = (SDLNet_UDP_Send(sock, channel, pack) > 0);



    SDLNet_FreePacket(pack);

}

...