Untitled

#include<stdio.h>
#include<string.h>
#include<time.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<arpa/inet.h>
#include<unistd.h>
#include<stdlib.h>
void main()
{
	char*ip="127.0.0.1";
	int port=5555;
	srand(time(0));
	int sockfd;
	struct sockaddr_in server_addr,client_addr;
	char buffer[1024];
	socklen_t addr_size;
	int n,i,b;
	int recd[10];
	for(i=0;i<10;i++)
	{
		sockfd=socket(AF_INET,SOCK_DGRAM,0);
		if(sockfd<0)
		{
			perror("[-]socket error");
			exit(1);
		}
		memset(&server_addr,'\0',sizeof(server_addr));
		server_addr.sin_family=AF_INET;
		server_addr.sin_port=htons(port);
		server_addr.sin_addr.s_addr=inet_addr(ip);
		n=bind(sockfd,(struct sockaddr*)&server_addr,sizeof(server_addr));
		if(n<0)
		{
			perror("[-]bind error");
			exit(1);
		}
		while(1)
		{
			bzero(buffer,1024);
			addr_size=sizeof(client_addr);
			recvfrom(sockfd,buffer,1024,0,(struct sockaddr*)&client_addr,&addr_size);
			b=atoi(buffer);
			if(recd[b]==b)
				printf("server received : packet %s(duplicate) \n",buffer);
			else
			{
				recd[b]=b;
				printf("server received packet %s\n",buffer);
			}
			sleep(1);
			if(rand()%2==0)
			{
				printf("server sending acknowledgement of packet %s\n",buffer);
				sendto(sockfd,buffer,1024,0,(struct sockaddr*)&client_addr,sizeof(client_addr));
			}
		}
	}	
}