Module: Chase::HttpParser

Included in:
Server
Defined in:
lib/chase/http_parser.rb

Overview

Handle parsing of incoming http requests

Constant Summary collapse

VALID_METHODS = 
%w(GET POST PUT DELETE PATCH HEAD OPTIONS).freeze
MAPPED_HEADERS = 
{ 'cookie' => 'HTTP_COOKIE', 'if-none-match' => 'IF_NONE_MATCH',
'content-type' => 'CONTENT_TYPE', 'content-length' => 'CONTENT_LENGTH' }.freeze

Instance Method Summary collapse

Instance Method Details

#http_method ⇒ Object 



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# File 'lib/chase/http_parser.rb', line 48

def http_method
  http_parser.http_method
end

#http_parser ⇒ Object 



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# File 'lib/chase/http_parser.rb', line 10

def http_parser
  @parser ||= HTTP::Parser.new.tap do |parser|
    parser.on_headers_complete { @current_header = nil }

    parser.on_url do |url|
      raise HTTP::Parser::Error, 'Invalid method' unless VALID_METHODS.include?(http_method)

      set_env('HTTP_METHOD', http_method)
      set_env('REQUEST_URI', url)
      matches = url.match(/^(([^:\/?#]+):)?(\/\/([^\/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?/)
      matches ||= Hash.new('')
      set_env('PROTOCOL', matches[2])
      set_env('PATH_INFO', matches[5])
      set_env('QUERY_STRING', matches[7])
    end

    parser.on_header_field { |name| @current_header = name }

    parser.on_header_value do |value|
      if key = MAPPED_HEADERS[@current_header.downcase]
        set_env(key, value)
      else
        request.headers[@current_header] = value
      end
    end

    parser.on_body { |body| set_env('POST_CONTENT', body) }

    # parser.on_message_begin do
    #   puts "message begin"
    # end
    #
    # parser.on_message_complete do
    #   puts "message complete"
    # end
  end
end

#set_env(key, value) ⇒ Object 



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# File 'lib/chase/http_parser.rb', line 52

def set_env(key, value)
  request.env[key] = value
end