Hi Vinuth, I think the only way to do this right now would be to forgo the getServingUrl method from the Blobstore Images API and generate a private url of the image within your app. Much in the same way that you would serve a non-image blobstore entity such as a .zip or some other binary.
However, there are drawbacks: If you rely on the sizing and cropping arguments (that append to the API generated url) to render you images, you will need to build your own functionality for storing and serving de-normalized results from the transformations. Also, your app will incur the overhead for both a request as well as a few RPCs for each image served, which can add up if you are displaying many thumbnails on a single page which can noticeably impact latency and/or force your app to scale up more resources. On the other hand, it does allow for setting the headers any way you want, rendering readable urls (which *some* SEO auditors consider critical), as well as giving a mechanism for monitoring the usage of each image asset. That last part is helpful if you don't want some user consuming your apps bandwidth for their own CDN purposes, since AFAIK, GAE does not have any specific logging for individual Blobstore images served. (If it can, someone please let me know ;) Maybe this will fit your use case, good luck! --Joe On Feb 25, 3:49 am, Vinuth Madinur <vinuth.madi...@gmail.com> wrote: > Had posted this on Stackoverflow, since I didn't see any response there, > retrying to start the conversation here. > > I hit upon this problem while trying to display image in a canvas to fetch > it's color properties. However, since the image from blobstore is served > from a different domain, the canvas gets tainted. Is there a workaround for > this problem? Shouldn't blobstore be sending the > Access-Control-Allow-Origin header based on the requesting domain and > whether the domain owns the content? -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
