http_server.cpp

#include <iostream>
#include <string>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#include <cstring>

const int PORT = 8080; // Port number for the HTTP server

void handle_client(int client_socket) {
    const std::string response =
        "HTTP/1.1 200 OK\r\n"
        "Content-Type: text/plain\r\n"
        "Content-Length: 13\r\n"
        "\r\n"
        "Hello, World!";

    // Send the response to the client
    send(client_socket, response.c_str(), response.size(), 0);
    close(client_socket);
}


int main() {
    int server_socket, client_socket;
    struct sockaddr_in server_addr, client_addr;
    socklen_t client_addr_len = sizeof(client_addr);

    // Create the server socket
    server_socket = socket(AF_INET, SOCK_STREAM, 0);
    if (server_socket < 0) {
        perror("socket");
        return 1;
    }

    // Set up the server address
    memset(&server_addr, 0, sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = INADDR_ANY; // Bind to all available interfaces
    server_addr.sin_port = htons(PORT);

    // Bind the socket to the address
    if (bind(server_socket, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
        perror("bind");
        close(server_socket);
        return 1;
    }

    // Listen for incoming connections
    if (listen(server_socket, 5) < 0) {
        perror("listen");
        close(server_socket);
        return 1;
    }

    std::cout << "Server listening on port " << PORT << "...\n";

    while (true) {
        // Accept incoming connections
        client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &client_addr_len);
        if (client_socket < 0) {
            perror("accept");
            close(server_socket);
            return 1;
        }

        // Handle the client in a separate function
        handle_client(client_socket);
    }

    close(server_socket);
    return 0;
}