private async Task InternalSendRequestBodyAsync(WinHttpRequestState state, bool chunkedModeForSend) { using (var requestStream = new WinHttpRequestStream(state, chunkedModeForSend)) { await state.RequestMessage.Content.CopyToAsync( requestStream, state.TransportContext).ConfigureAwait(false); await requestStream.EndUploadAsync(state.CancellationToken).ConfigureAwait(false); } }