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Remove non-lowercase headers in Rails default configuration (fixes #541) #551

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Remove non-lowercase headers in Rails default configuration (fixes #541) #551

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9 changes: 6 additions & 3 deletions lib/secure_headers/railtie.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -22,9 +22,12 @@ class Railtie < Rails::Railtie
ActiveSupport.on_load(:action_controller) do
include SecureHeaders

unless Rails.application.config.action_dispatch.default_headers.nil?
conflicting_headers.each do |header|
Rails.application.config.action_dispatch.default_headers.delete(header)
default_headers = Rails.application.config.action_dispatch.default_headers
unless default_headers.nil?
default_headers.each_key do |header|
if conflicting_headers.include?(header.downcase)
default_headers.delete(header)
end
end
end
end
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