InternetHandle.h

#ifndef TENDUKE_HTTP_WIN_INTERNETHANDLE_H
#define TENDUKE_HTTP_WIN_INTERNETHANDLE_H
 
#include <windows.h>
#include <winhttp.h>
#include "../win32_utils.h"
#include "TendukeException.h"
#include "log/log.h"
 
namespace tenduke { namespace http { namespace win {

class InternetHandle
{
public:
    virtual ~InternetHandle()
    {
        try {
            close();
        }
        // Ignore any exceptions: Throwing from destructors leads to undefined behavior
        catch (::tenduke::TendukeException &e) {
            ::tenduke::log::warning(std::string("WinHttpCloseHandle failed. Ignored. Reason: ") + e.what());
        }
    }

    explicit InternetHandle(const ::HINTERNET handle)
    : handle(handle)
    {
    }

    void close()
    {
        if (handle == nullptr) {
            return;
        }
 
        const auto handleToClose = handle;
        handle = nullptr;
        const auto ok = ::WinHttpCloseHandle(handleToClose);
 
        // Closing failed
        if (!ok) {
            ::tenduke::osa::win::throwOnHttpError(::GetLastError());
        }
    }
 
public:
    ::HINTERNET handle;
};
 
}}}
 
#endif //TENDUKE_HTTP_WIN_INTERNETHANDLE_H