protected virtual void UpdateETag(IFileUploadContext uploadContext, string editUri)
{
try
{
string newEtag = AtomClient.GetEtag(editUri, _requestFilter);
uploadContext.Settings.SetString(MEDIA_ETAG, newEtag);
}
catch (Exception)
{
}
}
protected virtual async Task UpdateImage(bool allowWriteStreamBuffering, string editMediaUri, string path, string editEntryUri, string etag, bool getEditInfo, PostNewImageResult result)
{
HttpResponseMessage response = null;
try
{
response = await RedirectHelper.GetResponse(editMediaUri,
new RedirectHelper.RequestFactory(new ImageUploadHelper(this, path, "PUT", etag, allowWriteStreamBuffering).Create));
}
catch (WebException we)
{
bool recovered = false;
if (we.Status == WebExceptionStatus.ProtocolError && we.Response != null)
{
HttpWebResponse errResponse = we.Response as HttpWebResponse;
if (errResponse != null && errResponse.StatusCode == HttpStatusCode.PreconditionFailed)
{
string newEtag = await AtomClient.GetEtag(editMediaUri, _requestFilter);
if (newEtag != null && newEtag.Length > 0 && newEtag != etag)
{
if (!AtomClient.ConfirmOverwrite())
{
throw new BlogClientOperationCancelledException();
}
try
{
response = await RedirectHelper.GetResponse(editMediaUri,
new RedirectHelper.RequestFactory(new ImageUploadHelper(this, path, "PUT", newEtag, allowWriteStreamBuffering).Create));
}
finally
{
if (response != null)
{
response.Dispose();
}
}
recovered = true;
}
}
else if (!allowWriteStreamBuffering)
{
// The error may have been due to the server requiring stream buffering (WinLive 114314, 252175)
// Try again with stream buffering.
await UpdateImage(true, editMediaUri, path, editEntryUri, etag, getEditInfo, result);
recovered = true;
}
}
if (!recovered)
{
throw;
}
}
// Check to see if we are going to get the src url and the etag, in most cases we will want to get this
// information, but in the case of a photo album, since we never edit the image or link directly to them
// we don't need the information and it can saves an http request.
if (getEditInfo)
{
string selfPage;
XmlRestRequestHelper.XmlRequestResult xmlResult = new XmlRestRequestHelper.XmlRequestResult();
xmlResult.uri = new Uri(editEntryUri);
XmlDocument mediaLinkEntry = await xmlRestRequestHelper.Get(_requestFilter, xmlResult);
ParseResponse(mediaLinkEntry, result);
}
else
{
//thumbnailSmall = null;
//thumbnailLarge = null;
//srcUrl = null;
}
}