Open Radar

 
Summary:

When displaying document types (as of Technical Q&A QA1630), there is a problem when loading certain files that don't have an extension. We're downloading files from a API of one of our clients. The files are downloaded through a download script, and the filename is therefore not a part of the URL. This works perfectly for almost all files, including PPT, DOC, DOCX, PDF, and so on. But not for PPTX.

Sample URL to get the idea:
http://api.client.com/download?session=1234-1234-1234&file=1234

Steps to Reproduce:

With a UIWebView, open up a PPTX-file with file extension:
[documentView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.appcorn.se/sample.pptx"]]];

Then load the same file but without extension:
[documentView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.appcorn.se/sample"]]];

Expected Results:

On both requests, the file should be displayed the same way, just as it does with for example DOCX or PDF.

Actual Results:

The first request succeeds without problems, the second request fails with error:
Error Domain=WebKitErrorDomain Code=102 UserInfo=0x4d972b0 "Frame load interrupted"

Regression:

The download script mentioned in the summary supplies the web request with the correct filename in the response headers and downloading a file from OSX Safari results in a filename.pptx-file. The behavior of UIWebView when opening files without extension isn't described in the documentation (with exception of the legacy iWork formats, for example .pages.zip).

I'm simply suggesting that this is a bug, because all other file types works as I expected.

Notes:

I'll leave two copies of a the same sample PPTX-file (from http://openxmldeveloper.org/) on my server:

http://www.appcorn.se/sample.pptx
http://www.appcorn.se/sample