Chat Server Application not working using C programming - c

Question

I have been trying to create a chat server and client model (where the server reads the message sent by client and replies back with a hello message) using C programming, but my code isn't working.
Here's my code:
Server side code
https://cl1p.net/server
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdlib.h>
#define PORT 22341
#define MAXLINE 1024
int main(){
int sockfd;
int clientfd;
char buffer[MAXLINE+1];
if ((sockfd=socket(AF_INET,SOCK_STREAM,0))<0){
perror("Socket creation failed at server end");
exit(1);
}
struct sockaddr_in servaddr;
memset(&servaddr,0,sizeof(servaddr));
servaddr.sin_family=AF_INET;
servaddr.sin_port=htons(PORT);
servaddr.sin_addr.s_addr=htonl(INADDR_ANY);
if ((bind(sockfd,(struct sockaddr *) &servaddr,sizeof(servaddr))<0)){
perror("Error while binding at server side");
exit(2);
}
int len=sizeof(servaddr);
while (1){
memset(buffer,0,strlen(buffer));
listen(sockfd,5);
accept(sockfd,(struct sockaddr *) &servaddr,&len);
recv(clientfd,buffer,MAXLINE,0);
if (strncmp(buffer,"Exit",4)==0){
printf ("Server exiting \n");
break;
}
send(clientfd,(char *)"Hello",MAXLINE,0);
}
close(sockfd);
close(clientfd);
}
Client Code:
https://cl1p.net/client1
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdlib.h>
#define PORT 22341
#define MAXLINE 1024
int main(){
int sockfd;
struct sockaddr_in servaddr;
memset(&servaddr,0,sizeof(servaddr));
servaddr.sin_port=htons(PORT);
servaddr.sin_family=AF_INET;
servaddr.sin_addr.s_addr=htonl(INADDR_ANY);
sockfd=socket(AF_INET,SOCK_STREAM,0);
char buffer[MAXLINE+1];
char buffer2[MAXLINE+1];
connect(sockfd,(struct sockaddr *)&servaddr,sizeof(servaddr));
while (1){
memset(buffer,0,sizeof(buffer));
memset(buffer2,0,sizeof(buffer2));
printf ("Enter a message \n");
fgets(buffer,MAXLINE,stdin);
send(sockfd,(char *)buffer,MAXLINE,0);
printf ("Bufer is %s\n",buffer);
if (strncmp(buffer,"exit",4)==0){
printf ("Client exiting");
exit(1);
}
recv(sockfd,(char *) buffer2,MAXLINE,0);
printf ("Data received at client side is %s\n",buffer2);
}
close(sockfd);
return 0;
}
On running this code,I get a segmentation fault at the server side and receive no data at the client side. Can someone please explain what's wrong with my code?