Method: AppMap::Util.select_headers

Defined in:
lib/appmap/util.rb

.select_headers(env) ⇒ Object 



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# File 'lib/appmap/util.rb', line 100

def select_headers(env)
  # Rack prepends HTTP_ to all client-sent headers.
  matching_headers = env
    .select { |k,v| k.start_with? 'HTTP_'}
    .reject { |k,v| v.blank? }
    .each_with_object({}) do |kv, memo|
      key = kv[0].sub(/^HTTP_/, '').split('_').map(&:capitalize).join('-')
      value = kv[1]
      memo[key] = value
    end
  matching_headers.blank? ? nil : matching_headers
end