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Regression: Content-Type from File extension is now case-sensitive, no longer consults registry

Repro:

1. Save a JPEG on your desktop as foo.Jpg

2. Drag drop file to Fiddler

Observe:

- File does not have correct Content-Type response header.

 

File extensions should be treated as case-insensitive when mapping to MIME types (Utilities::ContentTypeForFileExtension).

 

3. Rename a text file to foo.map

4. Drag drop file to Fiddler

Observe:

- File does not have correct Content-Type response header from the registry.

 

It looks like the registry may not be getting consulted properly; perhaps this was done with the introduction of CustomMimeMappings.xml which was presumably added to better support running on Mono/Linux, but Fiddler should still fall back to the Windows registry on Windows.

  • Eric Lawrence
  • Sep 18 2018
Bug
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