Class: Thin::Headers

Inherits:
Object
  • Object
show all
Defined in:
lib/thin/headers.rb

Overview

Store HTTP header name-value pairs direcly to a string and allow duplicated entries on some names.

Constant Summary collapse

HEADER_FORMAT = 
"%s: %s\r\n".freeze
ALLOWED_DUPLICATES = 
%w(set-cookie set-cookie2 warning www-authenticate).freeze
CR_OR_LF = 
/[\r\n]/.freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Headers

Returns a new instance of Headers.



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# File 'lib/thin/headers.rb', line 13

def initialize
  @sent = {}
  @out = []
end

Instance Method Details

#[]=(key, value) ⇒ Object

Add key: value pair to the headers. Ignore if already sent and no duplicates are allowed for this key.



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# File 'lib/thin/headers.rb', line 21

def []=(key, value)
  downcase_key = key.downcase
  if !@sent.has_key?(downcase_key) || ALLOWED_DUPLICATES.include?(downcase_key)
    @sent[downcase_key] = true
    value = case value
            when Time
              value.httpdate
            when NilClass
              return
            when CR_OR_LF
              raise InvalidHeader, "Header contains CR or LF"
            else
              value.to_s
            end
    @out << HEADER_FORMAT % [key, value]
  end
end

#has_key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/thin/headers.rb', line 39

def has_key?(key)
  @sent[key.downcase]
end

#to_s ⇒ Object 



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# File 'lib/thin/headers.rb', line 43

def to_s
  @out.join
end