UDP server NIOS II IDE

Hi all,

on the web I found an example of a UDP-server but it doens't seem to compile. It sais it doesn't know the right directory. Could you tell me what the problem is?!

# include "lwip/sockets.h"# include <sys/types.h># include <netinet/in.h># include <stdio.h>

int main(void) {

int sockfd, addrlen;

char buffer[100];

int no_of_bytes;

struct sockaddr_in addr;

struct sockaddr_in their_addr;

//create a socket

if ((sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {

printf("error:socket creation\n");

}

printf(" Socket fd:%d \n", sockfd);

addr.sin_port = htons(666);

addr.sin_family = AF_INET;

addr.sin_addr.s_addr = INADDR_ANY;

memset(&(addr.sin_zero), 0, 8);

//Bind the socket to the port

printf("binding socket....\n");

if ( bind(sockfd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {

printf("error:Binding\n");

}

printf("Socket bound\n");

addrlen = sizeof(struct sockaddr);

if((no_of_bytes = recvfrom( sockfd,

buffer,

sizeof(buffer),

0,

(struct sockaddr *) &their_addr,

&addrlen)) == -1)

{

printf("error in receiving from %s \n",

inet_ntoa(their_addr.sin_addr));

printf(" %d\n", no_of_bytes);

exit(0);

}

else

{

printf("Received: %s\n", buffer);

}

upper_lower(buffer);

sendto(sockfd, buffer, sizeof(buffer), 0, (struct sockaddr *) &their_addr, addrlen);

close(sockfd);

return 0;

}

It seems fine by me, and I changed some stuff, but the compiler doesn&#39;t recognize the folders.

Cheers,

Danny