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Editorial Team
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Asked: 2026-05-15T21:41:30+00:00

I want to have Rack serve a specific file with a specific content type.

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I want to have Rack serve a specific file with a specific content type. It’s a .htc file and it needs to be served as text/x-component so that IE will recognize it. In apache I would just do

AddType text/x-component .htc

How can I achieve this with Rack? Currently the file is served by Rack::Static, but I didn’t find an option to set the content type.

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1 Answer

  1. Editorial Team

    You can update your config/initializers/mime_types.rb like this:

    # Be sure to restart your server when you modify this file.

# Add new mime types for use in respond_to blocks:
# Mime::Type.register "text/richtext", :rtf
# Mime::Type.register_alias "text/html", :iphone

Rack::Mime::MIME_TYPES.merge!({
  ".ogg"     => "application/ogg",
  ".ogx"     => "application/ogg",
  ".ogv"     => "video/ogg",
  ".oga"     => "audio/ogg",
  ".mp4"     => "video/mp4",
  ".m4v"     => "video/mp4",
  ".mp3"     => "audio/mpeg",
  ".m4a"     => "audio/mpeg",
  ".htc"     => "text/x-component"
})
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