[](key)
            click to toggle source
          
          
          
  
            
            Returns the header field corresponding to the case-insensitive key. For
example, a key of “Content-Type” might return “text/html”
            
            
            
               
               
def [](key)
  a = @header[key.downcase] or return nil
  a.join(', ')
end
             
             
            
           
          
          
         
      
        
          
          
          
            []=(key, val)
            click to toggle source
          
          
          
  
            
            Sets the header field corresponding to the case-insensitive key.
            
            
            
               
               
def []=(key, val)
  unless val
    @header.delete key.downcase
    return val
  end
  @header[key.downcase] = [val]
end
             
             
            
           
          
          
         
      
        
          
          
          
            add_field(key, val)
            click to toggle source
          
          
          
  
            
            - Ruby 1.8.3
- 
Adds header field instead of replace. Second argument valmust
be a String. See also []=,
[] and get_fields.
 request.add_field 'X-My-Header', 'a'
p request['X-My-Header']              
p request.get_fields('X-My-Header')   
request.add_field 'X-My-Header', 'b'
p request['X-My-Header']              
p request.get_fields('X-My-Header')   
request.add_field 'X-My-Header', 'c'
p request['X-My-Header']              
p request.get_fields('X-My-Header')   
               
               
def add_field(key, val)
  if @header.key?(key.downcase)
    @header[key.downcase].push val
  else
    @header[key.downcase] = [val]
  end
end
             
             
            
           
          
          
         
      
        
          
          
          
            basic_auth(account, password)
            click to toggle source
          
          
          
  
            
            Set the Authorization: header for “Basic” authorization.
            
            
            
               
               
def basic_auth(account, password)
  @header['authorization'] = [basic_encode(account, password)]
end
             
             
            
           
          
          
         
      
        
          
          
          
            canonical_each()
            click to toggle source
          
          
          
  
            
            
            
            
          
          
          
          
          
         
      
        
          
          
          
            chunked?()
            click to toggle source
          
          
          
  
            
            Returns “true” if the “transfer-encoding” header is present and set to
“chunked”.  This is an HTTP/1.1 feature, allowing the  the content to be
sent in “chunks” without at the outset stating the entire content length.
            
            
            
               
               
def chunked?
  return false unless @header['transfer-encoding']
  field = self['Transfer-Encoding']
  (/(?:\A|[^\-\w])chunked(?![\-\w])/i =~ field) ? true : false
end
             
             
            
           
          
          
         
      
        
          
          
          
            connection_close?()
            click to toggle source
          
          
          
  
            
            
            
            
            
               
               
def connection_close?
  tokens(@header['connection']).include?('close') or
  tokens(@header['proxy-connection']).include?('close')
end
             
             
            
           
          
          
         
      
        
          
          
          
            connection_keep_alive?()
            click to toggle source
          
          
          
  
            
            
            
            
            
               
               
def connection_keep_alive?
  tokens(@header['connection']).include?('keep-alive') or
  tokens(@header['proxy-connection']).include?('keep-alive')
end
             
             
            
           
          
          
         
      
        
          
          
          
            content_length()
            click to toggle source
          
          
          
  
            
            Returns an Integer object which represents the Content-Length: header field
or nil if that field is not provided.
            
            
            
               
               
def content_length
  return nil unless key?('Content-Length')
  len = self['Content-Length'].slice(/\d+/) or
      raise HTTPHeaderSyntaxError, 'wrong Content-Length format'
  len.to_i
end
             
             
            
           
          
          
         
      
        
          
          
          
            content_length=(len)
            click to toggle source
          
          
          
  
            
            
            
            
            
               
               
def content_length=(len)
  unless len
    @header.delete 'content-length'
    return nil
  end
  @header['content-length'] = [len.to_i.to_s]
end
             
             
            
           
          
          
         
      
        
          
          
          
            content_range()
            click to toggle source
          
          
          
  
            
            Returns a Range object which represents Content-Range: header field. This
indicates, for a partial entity body, where this fragment fits inside the
full entity body, as range of byte offsets.
            
            
            
               
               
def content_range
  return nil unless @header['content-range']
  m = %r<bytes\s+(\d+)-(\d+)/(\d+|\*)>i.match(self['Content-Range']) or
      raise HTTPHeaderSyntaxError, 'wrong Content-Range format'
  m[1].to_i .. m[2].to_i + 1
end
             
             
            
           
          
          
         
      
        
          
          
          
            content_type()
            click to toggle source
          
          
          
  
            
            Returns a content type string such as “text/html”. This method returns nil
if Content-Type: header field does not exist.
            
            
            
               
               
def content_type
  return nil unless main_type()
  if sub_type()
  then "#{main_type()}/#{sub_type()}"
  else main_type()
  end
end
             
             
            
           
          
          
         
      
        
          
          
          
            content_type=(type, params = {})
            click to toggle source
          
          
          
  
            
            
            
            
          
          
          
          
          
         
      
        
          
          
          
            delete(key)
            click to toggle source
          
          
          
  
            
            Removes a header field.
            
            
            
               
               
def delete(key)
  @header.delete(key.downcase)
end
             
             
            
           
          
          
         
      
        
          
          
          
            each()
            click to toggle source
          
          
          
  
            
            
            
            
          
          
          
          
          
         
      
        
          
          
          
            each_capitalized()
            click to toggle source
          
          
          
  
            
            As for each_header,
except the keys are provided in capitalized form.
            
            
            
               
               
def each_capitalized
  @header.each do |k,v|
    yield capitalize(k), v.join(', ')
  end
end
             
             
            
           
          
          
          
          
         
      
        
          
          
          
            each_capitalized_name()
            click to toggle source
          
          
          
  
            
            Iterates for each capitalized header names.
            
            
            
               
               
def each_capitalized_name(&block)   
  @header.each_key do |k|
    yield capitalize(k)
  end
end
             
             
            
           
          
          
         
      
        
      
        
          
          
          
            each_key()
            click to toggle source
          
          
          
  
            
            
            
            
          
          
          
          
          
         
      
        
          
          
          
            each_name()
            click to toggle source
          
          
          
  
            
            Iterates for each header names.
            
            
            
               
               
def each_name(&block)   
  @header.each_key(&block)
end
             
             
            
           
          
          
          
          
         
      
        
          
          
          
            each_value()
            click to toggle source
          
          
          
  
            
            Iterates for each header values.
            
            
            
               
               
def each_value   
  @header.each_value do |va|
    yield va.join(', ')
  end
end
             
             
            
           
          
          
         
      
        
          
          
          
            fetch(key, *args)
            click to toggle source
          
          
          
  
            
            Returns the header field corresponding to the case-insensitive key. Returns
the default value args, or the result of the block, or raises
an IndexErrror if there's no header field named key See
Hash#fetch
            
            
            
               
               
def fetch(key, *args, &block)   
  a = @header.fetch(key.downcase, *args, &block)
  a.kind_of?(Array) ? a.join(', ') : a
end
             
             
            
           
          
          
         
      
        
      
        
          
          
          
            get_fields(key)
            click to toggle source
          
          
          
  
            
            - Ruby 1.8.3
- 
Returns an array of header field strings corresponding to the
case-insensitive key.  This method allows you to get
duplicated header fields without any processing.  See also [].
 p response.get_fields('Set-Cookie')
  #=> ["session=al98axx; expires=Fri, 31-Dec-1999 23:58:23",
       "query=rubyscript; expires=Fri, 31-Dec-1999 23:58:23"]
p response['Set-Cookie']
  #=> "session=al98axx; expires=Fri, 31-Dec-1999 23:58:23, query=rubyscript; expires=Fri, 31-Dec-1999 23:58:23"
               
               
def get_fields(key)
  return nil unless @header[key.downcase]
  @header[key.downcase].dup
end
             
             
            
           
          
          
         
      
        
      
        
          
          
          
            key?(key)
            click to toggle source
          
          
          
  
            
            true if key header exists.
            
            
            
               
               
def key?(key)
  @header.key?(key.downcase)
end
             
             
            
           
          
          
         
      
        
          
          
          
            main_type()
            click to toggle source
          
          
          
  
            
            Returns a content type string such as “text”. This method returns nil if
Content-Type: header field does not exist.
            
            
            
               
               
def main_type
  return nil unless @header['content-type']
  self['Content-Type'].split(';').first.to_s.split('/')[0].to_s.strip
end
             
             
            
           
          
          
         
      
        
          
          
          
            proxy_basic_auth(account, password)
            click to toggle source
          
          
          
  
            
            Set Proxy-Authorization: header for “Basic” authorization.
            
            
            
               
               
def proxy_basic_auth(account, password)
  @header['proxy-authorization'] = [basic_encode(account, password)]
end
             
             
            
           
          
          
         
      
        
          
          
          
            range()
            click to toggle source
          
          
          
  
            
            Returns an Array of Range objects which represents Range: header field, or
nil if there is no such header.
            
            
            
               
               
def range
  return nil unless @header['range']
  self['Range'].split(/,/).map {|spec|
    m = /bytes\s*=\s*(\d+)?\s*-\s*(\d+)?/i.match(spec) or
            raise HTTPHeaderSyntaxError, "wrong Range: #{spec}"
    d1 = m[1].to_i
    d2 = m[2].to_i
    if    m[1] and m[2] then  d1..d2
    elsif m[1]          then  d1..-1
    elsif          m[2] then -d2..-1
    else
      raise HTTPHeaderSyntaxError, 'range is not specified'
    end
  }
end
             
             
            
           
          
          
         
      
        
          
          
          
            range=(r, e = nil)
            click to toggle source
          
          
          
  
            
            
            
            
          
          
          
          
          
         
      
        
          
          
          
            range_length()
            click to toggle source
          
          
          
  
            
            The length of the range represented in Content-Range: header.
            
            
            
               
               
def range_length
  r = content_range() or return nil
  r.end - r.begin
end
             
             
            
           
          
          
         
      
        
          
          
          
            set_content_type(type, params = {})
            click to toggle source
          
          
          
  
            
            Set Content-Type: header field by type and
params. type must be a String,
params must be a Hash.
            
            
            
               
               
def set_content_type(type, params = {})
  @header['content-type'] = [type + params.map{|k,v|"; #{k}=#{v}"}.join('')]
end
             
             
            
           
          
          
          
          
         
      
        
      
        
          
          
          
            set_range(r, e = nil)
            click to toggle source
          
          
          
  
            
            Set Range: header from Range (arg r) or beginning index and length from it
(arg idx&len).
req.range = (0..1023)
req.set_range 0, 1023
            
            
            
               
               
def set_range(r, e = nil)
  unless r
    @header.delete 'range'
    return r
  end
  r = (r...r+e) if e
  case r
  when Numeric
    n = r.to_i
    rangestr = (n > 0 ? "0-#{n-1}" : "-#{-n}")
  when Range
    first = r.first
    last = r.last
    last -= 1 if r.exclude_end?
    if last == -1
      rangestr = (first > 0 ? "#{first}-" : "-#{-first}")
    else
      raise HTTPHeaderSyntaxError, 'range.first is negative' if first < 0
      raise HTTPHeaderSyntaxError, 'range.last is negative' if last < 0
      raise HTTPHeaderSyntaxError, 'must be .first < .last' if first > last
      rangestr = "#{first}-#{last}"
    end
  else
    raise TypeError, 'Range/Integer is required'
  end
  @header['range'] = ["bytes=#{rangestr}"]
  r
end
             
             
            
           
          
          
          
          
         
      
        
          
          
          
            sub_type()
            click to toggle source
          
          
          
  
            
            Returns a content type string such as “html”. This method returns nil if
Content-Type: header field does not exist or sub-type is not given (e.g.
“Content-Type: text”).
            
            
            
               
               
def sub_type
  return nil unless @header['content-type']
  main, sub = *self['Content-Type'].split(';').first.to_s.split('/')
  return nil unless sub
  sub.strip
end
             
             
            
           
          
          
         
      
        
          
          
          
            to_hash()
            click to toggle source
          
          
          
  
            
            Returns a Hash consist of header names and values.
            
            
            
               
               
def to_hash
  @header.dup
end
             
             
            
           
          
          
         
      
        
          
          
          
            type_params()
            click to toggle source
          
          
          
  
            
            Returns content type parameters as a Hash as like {“charset” =>
“iso-2022-jp”}.
            
            
            
               
               
def type_params
  result = {}
  list = self['Content-Type'].to_s.split(';')
  list.shift
  list.each do |param|
    k, v = *param.split('=', 2)
    result[k.strip] = v.strip
  end
  result
end