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alt
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ruby21
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lib64
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ruby
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gems
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2.1.0
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gems
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rack-1.6.4
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lib
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rack
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files >> //opt/alt/ruby21/lib64/ruby/gems/2.1.0/gems/rack-1.6.4/lib/rack/cascade.rb
module Rack # Rack::Cascade tries a request on several apps, and returns the # first response that is not 404 or 405 (or in a list of configurable # status codes). class Cascade NotFound = [404, {CONTENT_TYPE => "text/plain"}, []] attr_reader :apps def initialize(apps, catch=[404, 405]) @apps = []; @has_app = {} apps.each { |app| add app } @catch = {} [*catch].each { |status| @catch[status] = true } end def call(env) result = NotFound last_body = nil @apps.each do |app| # The SPEC says that the body must be closed after it has been iterated # by the server, or if it is replaced by a middleware action. Cascade # replaces the body each time a cascade happens. It is assumed that nil # does not respond to close, otherwise the previous application body # will be closed. The final application body will not be closed, as it # will be passed to the server as a result. last_body.close if last_body.respond_to? :close result = app.call(env) last_body = result[2] break unless @catch.include?(result[0].to_i) end result end def add(app) @has_app[app] = true @apps << app end def include?(app) @has_app.include? app end alias_method :<<, :add end end
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