//
// Created by miti on 21/07/19.
//

#include "Ipc.h"

namespace Ipc {
    // Sets up a socket to bind and listen to the given port. Returns FD of the socket on success, -1 on failure (and prints a msg to stdout with the errno)
    int set_up_socket(int port, sockaddr_in *address) {
        int server_fd = 0;

        // Creating socket file descriptor for listening for attestation requests.
        server_fd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
        if (server_fd == -1) {
            printf("Error in creating a socket - %d", errno);
            return -1;
        }

        // Preparing the address struct for binding
        address->sin_family = AF_INET;
        address->sin_addr.s_addr = INADDR_ANY; // Todo: should this be localhost?
        address->sin_port = htons(port);
        //  memset(address->sin_zero,0,sizeof(address->sin_zero));

        socklen_t addrlen = sizeof(*address);
        // Binding
        if (bind(server_fd, (sockaddr *) address, addrlen) < 0) {
            printf("Error in binding %d - port was %d - ", errno, port);
            return -1;
        }

        // Listening
        if (listen(server_fd, 128) < 0) {
            printf("Error in listening %d", errno);
            return -1;
        }

        return server_fd;
    }
}