UDP SERVER

/* udpserver.c */

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <stdio.h>

#include <unistd.h>

#include <errno.h>

#include <string.h>

#include <stdlib.h>

int main()

{

int sock,addr_len,send_data[1024],recv_data[1024],i,j,bytes_read,temp=0,flag=1;

struct sockaddr_in server_addr , client_addr;

if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1)

{

perror("Socket");

exit(1);

}

server_addr.sin_family = AF_INET;

server_addr.sin_port = htons(5000);

server_addr.sin_addr.s_addr = INADDR_ANY;

bzero(&(server_addr.sin_zero),8);

if (bind(sock,(struct sockaddr *)&server_addr,sizeof(struct sockaddr)) == -1)

{

perror("Bind");

exit(1);

}

addr_len = sizeof(struct sockaddr);

printf("\n Server Waiting for client on port 5000......");

fflush(stdout);

bytes_read = recvfrom(sock,recv_data,1024,0,(struct sockaddr *)&client_addr, &addr_len);

for(i = 1; (i <=5) && flag; i++)

{

flag = 0;

for (j=0; j < 4; j++)

{

if (recv_data[j+1] >recv_data[j])

{

temp =recv_data[j];

recv_data[j] =recv_data[j+1];

recv_data[j+1] = temp;

flag = 1;

}

}

}

for(i=0;i<5;i++)

send_data[i]=recv_data[i];

sendto(sock, send_data,500, 0,(struct sockaddr *)&client_addr, sizeof(struct sockaddr));

printf("\nSent Shorted array to client\n");

fflush(stdout);

return 0;

}