LWIP broadcast

Hello all,

I read discussion about broadcast listening, but i need to send broadcast from nios to network, could you advise me:

I include code:

----------------------------

void udp_init_all(void)

{

// proved nastaveni ciloveho adresata soketoveho spojeni

host = gethostbyname("192.168.3.255");

if(host==NULL)

{ printf("Address error.");

return;

}

// nastav struktury a cilovy port adresata

remoteServAddr.sin_family = host->h_addrtype;

memcpy((char *) &remoteServAddr.sin_addr.s_addr, host->h_addr_list[0], host->h_length);

// remoteServAddr.sin_port = htons(serverPort);

// navaz sitove spojeni

if ((socketDescriptor = socket(AF_INET, SOCK_DGRAM, 0)) < 0)

{ printf("Not able to create socket connection. \n");

return;

// exit(1);

}

serverAddress.sin_family = AF_INET;

serverAddress.sin_addr.s_addr = inet_addr(SRC_IP_ADR); //"192.168.3.238");

}

--------------------------

and sending code:

--------------------------

// nastav adresu portu a posli udp paket

remoteServAddr.sin_port = htons(serverPort);

if (sendto(socketDescriptor, out_buf, len, 0,

(struct sockaddr *) &remoteServAddr, sizeof(remoteServAddr)) < 0)

{ printf("I am not able to send data to remote server.\n");

// close(socketDescriptor);

return;

// exit(1);

}

-----------------------------

and sending code report me:

I am not able to send data to remote server.

What should I change ? Where is error ?

Jan Naceradsky, Altera