Method HTTPStatusCallback

common/HTTPDownloaderWinHTTP.cpp:67–218

}

void CALLBACK HTTPDownloaderWinHttp::HTTPStatusCallback(HINTERNET hRequest, DWORD_PTR dwContext, DWORD dwInternetStatus,
	LPVOID lpvStatusInformation, DWORD dwStatusInformationLength)
{
	Request* req = reinterpret_cast<Request*>(dwContext);
	switch (dwInternetStatus)
	{
		case WINHTTP_CALLBACK_STATUS_HANDLE_CREATED:
			return;

		case WINHTTP_CALLBACK_STATUS_HANDLE_CLOSING:
		{
			if (!req)
				return;

			pxAssert(hRequest == req->hRequest);

			HTTPDownloaderWinHttp* parent = static_cast<HTTPDownloaderWinHttp*>(req->parent);
			std::unique_lock<std::mutex> lock(parent->m_pending_http_request_lock);
			pxAssertRel(std::none_of(parent->m_pending_http_requests.begin(), parent->m_pending_http_requests.end(),
							[req](HTTPDownloader::Request* it) { return it == req; }),
				"Request is not pending at close time");

			// we can clean up the connection as well
			pxAssert(req->hConnection != NULL);
			WinHttpCloseHandle(req->hConnection);
			delete req;
			return;
		}

		case WINHTTP_CALLBACK_STATUS_REQUEST_ERROR:
		{
			const WINHTTP_ASYNC_RESULT* res = reinterpret_cast<const WINHTTP_ASYNC_RESULT*>(lpvStatusInformation);
			Console.Error("WinHttp async function %p returned error %u", res->dwResult, res->dwError);
			req->status_code = HTTP_STATUS_ERROR;
			req->state.store(Request::State::Complete);
			return;
		}
		case WINHTTP_CALLBACK_STATUS_SENDREQUEST_COMPLETE:
		{
			DbgCon.WriteLn("SendRequest complete");
			if (!WinHttpReceiveResponse(hRequest, nullptr))
			{
				Console.Error("WinHttpReceiveResponse() failed: %u", GetLastError());
				req->status_code = HTTP_STATUS_ERROR;
				req->state.store(Request::State::Complete);
			}

			return;
		}
		case WINHTTP_CALLBACK_STATUS_HEADERS_AVAILABLE:
		{
			DbgCon.WriteLn("Headers available");

			DWORD buffer_size = sizeof(req->status_code);
			if (!WinHttpQueryHeaders(hRequest, WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER,
					WINHTTP_HEADER_NAME_BY_INDEX, &req->status_code, &buffer_size, WINHTTP_NO_HEADER_INDEX))
			{
				Console.Error("WinHttpQueryHeaders() for status code failed: %u", GetLastError());