congestvpn/util.hpp

#pragma once

#include <exception>
#include <string>

/** MsgException -- an exception bearing a passed explanation message
 *
 * If `is_perror` is true, then the `strerror` corresponding message is appened
 * to the message in `what()`.
 */
class MsgException : public std::exception {
    public:
        MsgException(const std::string& msg, int code=0, bool is_perror=false);
        int errcode() const noexcept { return _code; }
        const char* what() const noexcept { return _what.c_str(); };

    private:
        std::string _msg;
        int _code;
        std::string _what;
};