TCP Chat App (Client Server Program in c)

TCP Chat App (Client Server Program in c)

05:50

Description: A server client code to implement a chat application. After establishing connection, server should receive and send data in an infinite loop whereas client should send and receive data indefinitely.

Server Code in c

#include <stdio.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <string.h>

int main(){

   int welcomeSocket, newSocket;

   char buffer[1024];

   struct sockaddr_in serverAddr;

   struct sockaddr_storage serverStorage;

   socklen_t addr_size;

   welcomeSocket = socket(PF_INET, SOCK_STREAM, 0);

 

   serverAddr.sin_family = AF_INET;

   serverAddr.sin_port = htons(7891);

   serverAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

   memset(serverAddr.sin_zero, '\0', sizeof serverAddr.sin_zero); 

   bind(welcomeSocket, (struct sockaddr *) &serverAddr, sizeof(serverAddr));

   if(listen(welcomeSocket,5)==0)

      printf("Listening\n");

   else

      printf("Error\n");

   addr_size = sizeof serverStorage;

   newSocket = accept(welcomeSocket, (struct sockaddr *) &serverStorage, &addr_size);

   while(1){

      recv(newSocket, buffer, 1024, 0);

      printf("Client says: %s\n",buffer);  

      gets(buffer);

      send(newSocket,buffer,13,0);

   }

  

   return 0;

}

Client Code in c

#include <stdio.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <string.h>

int main(){

   int clientSocket;

   char buffer[1024];

   struct sockaddr_in serverAddr;

   socklen_t addr_size;

   clientSocket = socket(PF_INET, SOCK_STREAM, 0);

   serverAddr.sin_family = AF_INET;

   serverAddr.sin_port = htons(7891);

   serverAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

   memset(serverAddr.sin_zero, '\0', sizeof serverAddr.sin_zero); 

   addr_size = sizeof serverAddr;

   connect(clientSocket, (struct sockaddr *) &serverAddr, addr_size);

   while(1){

     

      gets(buffer);

      send(clientSocket,buffer,13,0);

      recv(clientSocket, buffer, 1024, 0);

      printf("Server says: %s\n",buffer);  

   }

   return 0;

}