httpserver.c

#include "http.h"

int main(int argc, char** argv) {
    /*
        Create sockaddr_in with server information
    */
    char* port = "8080";
    struct sockaddr_in server_addr;
    memset(&server_addr, 0, sizeof(server_addr));
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(atoi(port));
    server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    socklen_t addrlen = sizeof(server_addr);

    /*
        Create server socket
    */
    int server_sockd = socket(AF_INET, SOCK_STREAM, 0);

    // Need to check if server_sockd < 0, meaning an error
    if (server_sockd < 0) {
        perror("socket");
    }

    /*
        Configure server socket
    */
    int enable = 1;

    /*
        This allows you to avoid: 'Bind: Address Already in Use' error
    */
    int ret = setsockopt(server_sockd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable));

    /*
        Bind server address to socket that is open
    */
    ret = bind(server_sockd, (struct sockaddr *) &server_addr, addrlen);

    /*
        Listen for incoming connections
    */
    ret = listen(server_sockd, 5); // 5 should be enough, if not use SOMAXCONN

    if (ret < 0) {
        return EXIT_FAILURE;
    }

    /*
        Connecting with a client
    */
    struct sockaddr client_addr;
    socklen_t client_addrlen;

    while (true) {
        printf("[+] server is waiting...\n");

        /*
         * 1. Accept Connection
         */
        int client_sockd = accept(server_sockd, &client_addr, &client_addrlen);
        // Remember errors happen

        /* char* buffer = "HTTP/1.1 200 OK\r\nContent-Length: 14\r\n\r\n"; */
        /* write(client_sockd, buffer, strlen(buffer)); */
        /* write(client_sockd, "int main() {}\n", 14); */

        /*
         * 2. Read HTTP Message
         */
        send_response(process_request(read_http_request(client_sockd)));

        close(client_sockd);
    }

    return EXIT_SUCCESS;
}