Implemented more user friendly WSF_RESPONSE

i.e allow to change the status code and the header as long as no content is really sent back to the client

This requires an addition WGI_RESPONSE, new post_commit_action: PROCEDURE [...]

library/server/ewsgi/connectors/nino/src/wgi_nino_connector.e

@@ -133,10 +133,10 @@ feature -- Server
 			res: detachable WGI_NINO_RESPONSE_STREAM
 		do
 			create req.make (env, create {WGI_NINO_INPUT_STREAM}.make (a_socket), Current)
-			create res.make (create {WGI_NINO_OUTPUT_STREAM}.make (a_socket), Void)
+			create res.make (create {WGI_NINO_OUTPUT_STREAM}.make (a_socket), create {WGI_NINO_ERROR_STREAM}.make_stderr (a_socket.descriptor.out))
 			req.set_meta_string_variable ("RAW_HEADER_DATA", a_headers_text)
 			service.execute (req, res)
-			res.commit
+			res.push
 		end
 
 note

library/server/ewsgi/connectors/nino/src/wgi_nino_error_stream.e

@@ -0,0 +1,70 @@
+note
+	description: "Summary description for WGI_CGI_ERROR_STREAM."
+	legal: "See notice at end of class."
+	status: "See notice at end of class."
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	WGI_NINO_ERROR_STREAM
+
+inherit
+	WGI_ERROR_STREAM
+
+create
+	make,
+	make_stderr,
+	make_stdout
+
+feature {NONE} -- Initialization
+
+	make (a_identifier: READABLE_STRING_8; a_file: PLAIN_TEXT_FILE)
+		do
+			identifier := a_identifier
+			output := a_file
+		end
+
+	make_stderr (a_identifier: READABLE_STRING_8)
+		do
+			make (a_identifier, io.error)
+		end
+
+	make_stdout (a_identifier: READABLE_STRING_8)
+		do
+			make (a_identifier, io.error)
+		end
+
+feature -- Access
+
+	identifier: READABLE_STRING_8
+
+	output: FILE
+
+feature -- Error
+
+	put_error (a_message: READABLE_STRING_8)
+		local
+			s: STRING
+		do
+			create s.make (a_message.count + identifier.count + 4)
+			s.append_character ('[')
+			s.append (identifier)
+			s.append_character (']')
+			s.append_character (' ')
+			s.append (a_message)
+			s.append_character ('%N')
+				-- Display it at once.
+			output.put_string (s)
+		end
+
+note
+	copyright: "2011-2011, Eiffel Software and others"
+	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
+	source: "[
+			Eiffel Software
+			5949 Hollister Ave., Goleta, CA 93117 USA
+			Telephone 805-685-1006, Fax 805-685-6869
+			Website http://www.eiffel.com
+			Customer support http://support.eiffel.com
+		]"
+end