Creates a new upload url. Invoking this method returns a url that an image may then be uploaded to. See method Upload for details of uploading an image. The returned upload url expires after approximately ten minutes, after which another call to this method should be made to get another url.
HTTP Method: POST
A valid access token.
Whether the method should run in sandbox mode - no writes will be made to the datastore.
Returns an UploadUrl object and HTTP status 200, or an Error object and HTTP status 4xx or 5xx. If the sandbox parameter was set then the returned object will contain dummy data and a boolean attribute named sandbox, which will have the value True. See the section on sandboxing for more details.
$ curl https://resighting-api.appspot.com/api/1/uploadurl --data access_token=ACCESS_TOKEN