Program Listing for File socket_headers.hpp

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#pragma once

#include <cstdint>
#include <cstdlib>

#ifdef _WIN32

#include <winsock2.h>
#include <ws2tcpip.h>

#else

#include <netdb.h>
#include <netinet/tcp.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>

#endif

namespace c2k::constants {

#ifdef _WIN32

    inline constexpr auto invalid_socket = std::uintptr_t{ INVALID_SOCKET };
    inline constexpr auto socket_error = SOCKET_ERROR;
    inline constexpr auto reuse_port = SO_REUSEADDR;
    inline constexpr auto tcp_no_delay = TCP_NODELAY;
    inline constexpr auto send_flags = 0;

    using SockLen = int;
    using SendReceiveSize = int;

#else

    inline constexpr auto invalid_socket = -1;
    inline constexpr auto socket_error = -1;
    inline constexpr auto reuse_port = SO_REUSEPORT;
    inline constexpr auto tcp_no_delay = TCP_NODELAY;
    inline constexpr auto send_flags = MSG_NOSIGNAL;

    using SockLen = unsigned int;
    using SendReceiveSize = std::size_t;
#endif

} // namespace c2k::constants

#ifndef _WIN32

inline int closesocket(int const socket) {
    return close(socket);
}

#endif