System.Net.Http.WinHttpHandler.WinHttpHandler.InternalSendRequestBodyAsync C# (CSharp) Method

        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);
            }
        }