Simplified EWSGI interfaces

Renamed WGI_RESPONSE_BUFFER as WGI_RESPONSE to avoid confusion
Removed EWF_HEADER and removed related caller from WGI implementation,
   now this is only part of WSF library
Added wgi_version, wgi_implementation and wgi_connector to the WGI_REQUEST interface
   to give more information to the user
Added back WGI_CONNECTOR to WGI specification, mainly because of `{WGI_REQUEST}.wgi_connector'
   simplified WGI_CONNECTOR to contain for now only `name' and `version'
   if the implementation of connector inherit from WGI_CONNECTOR (recommended)
   this might gives more access to the user using a reverse assignment for specific needs
   (but this usage is not recommended due to portability issue on other connector)
Removed useless connector.ecf since now EWF/WGI library provides the helper classes

library/server/ewsgi/src/helper/wgi_request_from_table.e

@@ -19,10 +19,11 @@ create
 
 feature {NONE} -- Initialization
 
-	make (a_vars: HASH_TABLE [READABLE_STRING_8, READABLE_STRING_8]; a_input: like input)
+	make (a_vars: HASH_TABLE [READABLE_STRING_8, READABLE_STRING_8]; a_input: like input; a_wgi_connector: like wgi_connector)
 		require
 			vars_attached: a_vars /= Void
 		do
+			wgi_connector := a_wgi_connector
 			input := a_input
 			set_meta_variables (a_vars)
 
@@ -34,6 +35,14 @@ feature -- Access: Input
 	input: WGI_INPUT_STREAM
 			-- Server input channel
 
+feature -- EWSGI access
+
+	wgi_version: STRING = "0.1"
+
+	wgi_implementation: STRING = "Eiffel Web Framework 0.1"
+
+	wgi_connector: WGI_CONNECTOR
+
 feature -- Access: CGI meta parameters
 
 	meta_variables: HASH_TABLE [READABLE_STRING_8, READABLE_STRING_8]

library/server/ewsgi/src/helper/wgi_response_stream.e

@@ -1,17 +1,16 @@
 note
 	description: "[
-			Response buffer
+			WGI Response implemented using stream buffer
 
 		]"
-	specification: "EWSGI specification https://github.com/Eiffel-World/Eiffel-Web-Framework/wiki/EWSGI-specification"
 	date: "$Date$"
 	revision: "$Revision$"
 
 class
-	WGI_RESPONSE_STREAM_BUFFER
+	WGI_RESPONSE_STREAM
 
 inherit
-	WGI_RESPONSE_BUFFER
+	WGI_RESPONSE
 
 create
 	make
@@ -76,34 +75,12 @@ feature -- Status setting
 
 feature -- Header output operation		
 
-	write_headers_string (a_headers: READABLE_STRING_8)
+	write_headers (a_headers: READABLE_STRING_8)
 		do
 			write (a_headers)
 			header_committed := True
 		end
 
-	write_header (a_status_code: INTEGER; a_headers: detachable ARRAY [TUPLE [key: READABLE_STRING_8; value: READABLE_STRING_8]])
-			-- Send headers with status `a_status', and headers from `a_headers'
-		local
-			h: EWF_HEADER
-			i,n: INTEGER
-		do
-			set_status_code (a_status_code)
-			create h.make
-			if a_headers /= Void then
-				from
-					i := a_headers.lower
-					n := a_headers.upper
-				until
-					i > n
-				loop
-					h.put_header_key_value (a_headers[i].key, a_headers[i].value)
-					i := i + 1
-				end
-			end
-			write_headers_string (h.string)
-		end
-
 feature -- Output operation
 
 	write_string (s: READABLE_STRING_8)