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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>

#define PORT 8080
#define BUFFER_SIZE 1024

void handle_client(int client_sock) {
    char buffer[BUFFER_SIZE];
    int bytes_received = recv(client_sock, buffer, BUFFER_SIZE - 1, 0);
    if (bytes_received < 0) {
        perror("recv");
        close(client_sock);
        return;
    }
    buffer[bytes_received] = '\0';
    printf("Received request:\n%s\n", buffer);

    const char *response = 
        "HTTP/1.1 200 OK\r\n"
        "Content-Type: text/html\r\n"
        "Connection: close\r\n\r\n"
        "<html><body><h1>Hello, World!</h1></body></html>";
    
    send(client_sock, response, strlen(response), 0);
    close(client_sock);
}

int main() {
    int server_sock, client_sock;
    struct sockaddr_in server_addr, client_addr;
    socklen_t client_len = sizeof(client_addr);

    server_sock = socket(AF_INET, SOCK_STREAM, 0);
    if (server_sock == -1) {
        perror("socket");
        exit(EXIT_FAILURE);
    }

    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = INADDR_ANY;
    server_addr.sin_port = htons(PORT);

    if (bind(server_sock, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
        perror("bind");
        close(server_sock);
        exit(EXIT_FAILURE);
    }

    if (listen(server_sock, 10) < 0) {
        perror("listen");
        close(server_sock);
        exit(EXIT_FAILURE);
    }

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

    while (1) {
        client_sock = accept(server_sock, (struct sockaddr*)&client_addr, &client_len);
        if (client_sock < 0) {
            perror("accept");
            continue;
        }
        handle_client(client_sock);
    }

    close(server_sock);
    return 0;
}

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