lib/mizuno/rack_handler.rb
def servlet_to_rack(request)
            # The Rack request that we will pass on.
            env = Hash.new

            # Map Servlet bits to Rack bits.
            env['REQUEST_METHOD'] = request.getMethod
            env['QUERY_STRING'] = request.getQueryString.to_s
            env['SERVER_NAME'] = request.getServerName
            env['SERVER_PORT'] = request.getServerPort.to_s
            env['rack.version'] = Rack::VERSION
            env['rack.url_scheme'] = request.getScheme
            env['HTTP_VERSION'] = request.getProtocol
            env["SERVER_PROTOCOL"] = request.getProtocol
            env['REMOTE_ADDR'] = request.getRemoteAddr
            env['REMOTE_HOST'] = request.getRemoteHost

            # request.getPathInfo seems to be blank, so we're using the URI.
            env['REQUEST_PATH'] = request.getRequestURI
            env['PATH_INFO'] = request.getRequestURI
            env['SCRIPT_NAME'] = ""

            # Rack says URI, but it hands off a URL.
            env['REQUEST_URI'] = request.getRequestURL.to_s

            # Java chops off the query string, but a Rack application will
            # expect it, so we'll add it back if present
            env['REQUEST_URI'] << "?#{env['QUERY_STRING']}" \
                if env['QUERY_STRING']

            # JRuby is like the matrix, only there's no spoon or fork().
            env['rack.multiprocess'] = false
            env['rack.multithread'] = true
            env['rack.run_once'] = false

            # The input stream is a wrapper around the Java InputStream.
            env['rack.input'] = @server.rewindable(request)

            # Force encoding if we're on Ruby 1.9
            env['rack.input'].set_encoding(Encoding.find("ASCII-8BIT")) \
                if env['rack.input'].respond_to?(:set_encoding)

            # Populate the HTTP headers.
            request.getHeaderNames.each do |header_name|
                header = header_name.to_s.upcase.tr('-', '_')
                env["HTTP_#{header}"] = request.getHeader(header_name)
            end

            # Rack Weirdness: HTTP_CONTENT_TYPE and HTTP_CONTENT_LENGTH
            # both need to have the HTTP_ part dropped.
            env["CONTENT_TYPE"] = env.delete("HTTP_CONTENT_TYPE") \
                if env["HTTP_CONTENT_TYPE"]
            env["CONTENT_LENGTH"] = env.delete("HTTP_CONTENT_LENGTH") \
                if env["HTTP_CONTENT_LENGTH"]

            # Route errors through the logger.
            env['rack.errors'] ||= @server.logger
            env['rack.logger'] ||= @server.logger

            # All done, hand back the Rack request.
            return(env)
        end
def servlet_to_rack(request)
            # The Rack request that we will pass on.
            env = Hash.new

            # Map Servlet bits to Rack bits.
            env['REQUEST_METHOD'] = request.getMethod
            env['QUERY_STRING'] = request.getQueryString.to_s
            env['SERVER_NAME'] = request.getServerName
            env['SERVER_PORT'] = request.getServerPort.to_s
            env['rack.version'] = Rack::VERSION
            env['rack.url_scheme'] = request.getScheme
            env['HTTP_VERSION'] = request.getProtocol
            env["SERVER_PROTOCOL"] = request.getProtocol
            env['REMOTE_ADDR'] = request.getRemoteAddr
            env['REMOTE_HOST'] = request.getRemoteHost

            # request.getPathInfo seems to be blank, so we're using the URI.
            env['REQUEST_PATH'] = request.getRequestURI
            env['PATH_INFO'] = request.getRequestURI
            env['SCRIPT_NAME'] = ""

            # Rack says URI, but it hands off a URL.
            env['REQUEST_URI'] = request.getRequestURL.to_s

            # Java chops off the query string, but a Rack application will
            # expect it, so we'll add it back if present
            env['REQUEST_URI'] << "?#{env['QUERY_STRING']}" \
                if env['QUERY_STRING']

            # JRuby is like the matrix, only there's no spoon or fork().
            env['rack.multiprocess'] = false
            env['rack.multithread'] = true
            env['rack.run_once'] = false

            # The input stream is a wrapper around the Java InputStream.
            env['rack.input'] = @server.rewindable(request)

            # Force encoding if we're on Ruby 1.9
            env['rack.input'].set_encoding(Encoding.find("ASCII-8BIT")) \
                if env['rack.input'].respond_to?(:set_encoding)

            # Populate the HTTP headers.
            request.getHeaderNames.each do |header_name|
                header = header_name.to_s.upcase.tr('-', '_')
                env["HTTP_#{header}"] = request.getHeader(header_name)
            end

            # Rack Weirdness: HTTP_CONTENT_TYPE and HTTP_CONTENT_LENGTH
            # both need to have the HTTP_ part dropped.
            env["CONTENT_TYPE"] = env.delete("HTTP_CONTENT_TYPE") \
                if env["HTTP_CONTENT_TYPE"]
            env["CONTENT_LENGTH"] = env.delete("HTTP_CONTENT_LENGTH") \
                if env["HTTP_CONTENT_LENGTH"]

            # Route errors through the logger.
            env['rack.errors'] ||= @server.logger
            env['rack.logger'] ||= @server.logger

            # All done, hand back the Rack request.
            return(env)
        end
Turns a Servlet request into a Rack request hash.