public AsyncTask DownloadAsync(DownloadParameter downloadParam,
AsyncCallbacks <DownloadResult> asyncCallbacks = null)
{
CheckParameter(downloadParam != null, "downloadParam is required");
var asyncTask = new AsyncTask();
AsyncUtils.ProcessFirstItem(DoCompleteDownload(downloadParam), asyncCallbacks, asyncTask);
return(asyncTask);
}
private IObservable <DownloadResult> DoCompleteDownload(DownloadParameter downloadParam)
{
try
{
var result = BlockchainTransactionService.GetTransferTransaction(downloadParam.TransactionHash)
.Select(transferTransaction => RetrieveProximaxMessagePayloadService.GetMessagePayload(
transferTransaction,
downloadParam.AccountPrivateKey))
.Select(messagePayload => CreateCompleteDownloadResult(messagePayload,
() => GetDataByteStream(messagePayload, null, downloadParam.PrivacyStrategy,
downloadParam.ValidateDigest, null).Wait(), downloadParam.TransactionHash)).Wait();
return(Observable.Return(result));
}
catch (Exception ex)
{
return(Observable.Throw <DownloadResult>(new DownloadFailureException("Download failed.", ex)));
}
}
public DownloadResult Download(DownloadParameter downloadParam)
{
CheckParameter(downloadParam != null, "downloadParam is required");
return(DoCompleteDownload(downloadParam).Wait());
}