033server.c

/*
..........................................................................................................................................
Name : 033(server).c
Author : SHRUTI VERMA
Description : Write a program to communicate between two machines using socket.
Date : 30 Sep 2025
..........................................................................................................................................
*/

#include<unistd.h>
#include<stdlib.h>
#include<stdio.h>
#include<sys/socket.h>
#include<fcntl.h>
#include<netinet/in.h>

int main() {
    int sockfd, newsockfd;

    //create socket
    sockfd = socket(AF_INET, SOCK_STREAM, 0);

    //bind to IP/Port
    struct sockaddr_in saddr, caddr;
    saddr.sin_family = AF_INET;
    saddr.sin_addr.s_addr = INADDR_ANY;
    saddr.sin_port = htons(8080); 
    bind(sockfd, (struct sockaddr*)&saddr, sizeof(saddr));

    //listen for connections on socket
    listen(sockfd, 5);

    while(1) {
        //accept client on newsocket
        socklen_t clen;
        clen = sizeof(caddr);
        newsockfd = accept(sockfd, (struct sockaddr*)&caddr, &clen);

        // send and recieve
        char buffer[1024];
        read(newsockfd, buffer, sizeof(buffer));
        printf("Client says - %s\n", buffer);
        write(newsockfd, "Hello from server!", 19);
    }
    
    //close 
    close(newsockfd);
    close(sockfd);
    
}

/*------------------------------------OUTPUT------------------------------------
vumma@vumma-VivoBook-15-ASUS-Laptop-X507UF:~/Desktop/SS/HOL2$ ./server
Client says - Hello Server!!
Client says - Hello Server!!
Client says - Hello Server!!
Client says - Hello Server!!
*/