reflect changes in Rack::Utils::HTTP_STATUS_CODES

Applications may want to alter the message associated with HTTP
status codes in Rack::Utils::HTTP_STATUS_CODES.  Avoid memoizing
status lines ahead-of-time

Note: this introduces a minor performance regression, but ought to
be unnoticeable unless you're running "Hello world"-type apps.

1 files changed, 7 insertions, 8 deletions

diff --git a/lib/unicorn/http_response.rb b/lib/unicorn/http_response.rb
index 016dac8..a42303e 100644
--- a/lib/unicorn/http_response.rb
+++ b/lib/unicorn/http_response.rb
@@ -10,15 +10,12 @@
 # is the job of Rack, with the exception of the "Date" and "Status" header.
 module Unicorn::HttpResponse
 
-  # Every standard HTTP code mapped to the appropriate message.
-  CODES = Rack::Utils::HTTP_STATUS_CODES.inject({}) { |hash,(code,msg)|
-    hash[code] = "#{code} #{msg}"
-    hash
-  }
   CRLF = "\r\n"
 
+  # internal API, code will always be common-enough-for-even-old-Rack
   def err_response(code, response_start_sent)
-    "#{response_start_sent ? '' : 'HTTP/1.1 '}#{CODES[code]}\r\n\r\n"
+    "#{response_start_sent ? '' : 'HTTP/1.1 '}" \
+      "#{code} #{Rack::Utils::HTTP_STATUS_CODES[code]}\r\n\r\n"
   end
 
   # writes the rack_response to socket as an HTTP response
@@ -26,9 +23,11 @@ module Unicorn::HttpResponse
                           response_start_sent=false)
     hijack = nil
 
-    http_response_start = response_start_sent ? '' : 'HTTP/1.1 '
     if headers
-      buf = "#{http_response_start}#{CODES[status.to_i] || status}\r\n" \
+      code = status.to_i
+      msg = Rack::Utils::HTTP_STATUS_CODES[code]
+      start = response_start_sent ? ''.freeze : 'HTTP/1.1 '.freeze
+      buf = "#{start}#{msg ? %Q(#{code} #{msg}) : status}\r\n" \
             "Date: #{httpdate}\r\n" \
             "Connection: close\r\n"
       headers.each do |key, value|