#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <unistd.h>

#include <arpa/inet.h>

​

#define PORT 8080

#define BUFFER_SIZE 1024

​

int main() {

    int server_fd, new_socket;

    struct sockaddr_in address;

    int addrlen = sizeof(address);

    char buffer[BUFFER_SIZE] = {0};

    char *hello = "Hello from server";

​

    // Creating socket file descriptor

    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {

        perror("Socket failed");

        exit(EXIT_FAILURE);

    }

​

    // Bind the socket to the network address and port

    address.sin_family = AF_INET;

    address.sin_addr.s_addr = INADDR_ANY;

    address.sin_port = htons(PORT);

​

    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {

        perror("Bind failed");

        close(server_fd);

        exit(EXIT_FAILURE);

    }

​

    // Listen for incoming connections

    if (listen(server_fd, 3) < 0) {

        perror("Listen failed");

        close(server_fd);

        exit(EXIT_FAILURE);

    }

​

    printf("Server is listening on port %d\n", PORT);

​

    // Accept an incoming connection

    if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {

        perror("Accept failed");

        close(server_fd);

        exit(EXIT_FAILURE);

    }

​

    // Read message from client

    read(new_socket, buffer, BUFFER_SIZE);

    printf("Message from client: %s\n", buffer);

​

    // Send response to client

    send(new_socket, hello, strlen(hello), 0);

    printf("Hello message sent to client\n");

​

    // Close sockets

    close(new_socket);

    close(server_fd);

​

    return 0;

}