/// <summary>
/// Serialize the HTTP content to a stream as an asynchronous operation.
/// </summary>
/// <param name="stream">The target stream.</param>
/// <param name="context">Information about the transport (channel binding token, for example). This parameter may be null.</param>
/// <returns>The task object representing the asynchronous operation.</returns>
protected override async Task SerializeToStreamAsync(Stream stream, TransportContext context)
{
await _jsonService.SerializeAsync(stream, _invocationRequest).ConfigureAwait(false);
if (_invocationRequest.ModuleSourceType == ModuleSourceType.Stream)
{
await stream.WriteAsync(_boundaryBytes, 0, _boundaryBytes.Length).ConfigureAwait(false);
await _invocationRequest.ModuleStreamSource.CopyToAsync(stream).ConfigureAwait(false);
}
}