client side

 // Client side program 

#include <stdio.h> 

#include <sys/types.h> 

#include <sys/socket.h> 

#include <netinet/in.h> 

#include <arpa/inet.h> 

#include <unistd.h> 

#include <string.h> 

#include <stdlib.h> 

int main() 

{ 

    int sockfd, len, result; 

    struct sockaddr_in address; 

    char name[100], ser[100]; 

    

    // Create socket

    sockfd = socket(AF_INET, SOCK_STREAM, 0); 

    if (sockfd < 0) {

        perror("Socket creation failed");

        exit(1);

    }

    

    // Set up the server address struct

    address.sin_family = AF_INET; 

    address.sin_port = htons(9001); 

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

    len = sizeof(address); 

    

    // Connect to the server

    result = connect(sockfd, (struct sockaddr *) &address, len); 

    if (result == -1) 

    {  

        perror("Unable to connect");

        close(sockfd);

        exit(1);

    }

    

    // Send message to server

    printf("Enter the message: "); 

    fgets(name, sizeof(name), stdin);

    write(sockfd, name, strlen(name) + 1); 

    

    // Read message from server

    memset(ser, 0, sizeof(ser));

    read(sockfd, ser, sizeof(ser)); 

    printf("\nReading from server: \n"); 

    puts(ser); 

    

    // Close the socket

    close(sockfd); 

    return 0; 

}