content_length()
  public
  
    
    
Returns an Integer object which represents the
HTTP Content-Length: header field, or
nil if that field was not provided.
   
  
    Show source    
    
      
  def content_length
    return nil unless key?('Content-Length')
    len = self['Content-Length'].slice(/\d+/) or
        raise Net::HTTPHeaderSyntaxError, 'wrong Content-Length format'
    len.to_i
  end