#pragma once

#include <iostream>

#define Die(code)   \
    do              \
    {               \
        exit(code); \
    } while (0)

#define CONV(v) (struct sockaddr *)(v)

enum
{
    USAGE_ERR = 1, // 使用错误
    SOCKET_ERR,    // 创建套接字错误
    BIND_ERR,      // 绑定错误
    LISTEN_ERR     // 监听失败
};

const int gdefaultsockfd = -1;
const int gbacklog = 8;