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;

}