UDP_iterative

//Server:-
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#define MAX 100
int main()
{
int sockfd,stat;
struct sockaddr_in serveraddr;
struct sockaddr_in clientaddr;
char buf[MAX];
socklen_t clientlen;
sockfd = socket(AF_INET,SOCK_DGRAM,0);
if(sockfd==-1)
{
printf("Error Connecting socket\n");
exit(0);
}
else
{
printf("Socket is created\n");
serveraddr.sin_family=AF_INET;
serveraddr.sin_port=htons(7000);
serveraddr.sin_addr.s_addr=inet_addr("127.0.0.1");
stat=bind(sockfd,(struct sockaddr *)&serveraddr,sizeof(serveraddr));
}
if(stat==-1)
{
printf("Error assigning socket\n");
exit(0);
}
else
{
printf("Socket assigned\n");
}
memset(buf,0,MAX);
clientlen=sizeof(serveraddr);
while(1)
{
memset(buf,0,MAX);
recvfrom(sockfd,buf,MAX,0,(struct sockaddr *)&clientaddr,&clientlen);
printf("Data from port number:\t");
printf("%d\n",htons(clientaddr.sin_port));
printf("Message from client:\t");
printf("%s\n",buf);
memset(buf,0,MAX);
}
close(sockfd);
return 0;
}


//Client:-
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#define MAX 100
int main()
{
int sockfd,stat;
struct sockaddr_in serveraddr;
struct sockaddr_in clientaddr;
char buf[MAX];
socklen_t serverlen;
sockfd = socket(AF_INET,SOCK_DGRAM,0);
if(sockfd==-1)
{
printf("Error Connecting socket\n");
exit(0);
}
else
{
printf("Socket is created\n");
clientaddr.sin_family=AF_INET;
clientaddr.sin_port=htons(0);
clientaddr.sin_addr.s_addr=inet_addr("127.0.0.1");
stat=bind(sockfd,(struct sockaddr *)&clientaddr,sizeof(clientaddr));
}
if(stat==-1)
{
printf("Error assigning client socket\n");
exit(0);
}
else
{
printf("Socket assigned");
serveraddr.sin_family=AF_INET;
serveraddr.sin_port=htons(7000);
serveraddr.sin_addr.s_addr=inet_addr("127.0.0.1");
memset(buf,0,MAX);
printf("Enter the data\n");
printf("'.' on nextline ends the socket\n");
while(1)
{
memset(buf,0,MAX);
scanf("\t%s",buf);
if(strcmp(buf,".")==0)
{
break;
}
sendto(sockfd,buf,MAX,0,(struct sockaddr *)&serveraddr,sizeof(serveraddr));
memset(buf,0,MAX);
}
close(sockfd);
}
}