115501 2013-05-01 17:38:56 -0700 ResourceResponse might let non-lower-cased MIME types into WebCore 2013-05-02 09:21:52 -0700 1 1 1 Unclassified WebKit Page Loading 528+ (Nightly build) Unspecified Unspecified NEW P2 Normal --- 1 thorton webkit-unassigned ap darin oldest_to_newest 883682 0 thorton 2013-05-01 17:38:56 -0700 I don't see any code that ensures that the MIME type which ResourceResponseMac's ResourceResponse::platformLazyInit extracts from NSURLResponse (via -MIMEType) is lower-cased, but much of WebCore depends on MIME types being lower-cased. It seems like it would be ideal to fix this in a cross-platform way, somewhere above ResourceResponse::platformLazyInit (maybe ResourceResponseBase::lazyInit, I don't know... and also in ResourceResponseBase::setMimeType). 883721 1 ap 2013-05-01 22:05:39 -0700 I am not sure if it's ResourceResponse responsibility to change what is sent by the server. For example, we should probably report the actual type in Web Inspector, which would be impossible if we lowercased the type here. 883812 2 darin 2013-05-02 09:21:52 -0700 It’s too bad, since ResourceResponse is a convenient bottleneck. Worth thinking through where else it would be practical to do the case insensitivity or canonicalization.