Fixed issues in WGI_REQUEST's invariant

Fixed issues with guessing the default format for REST handling
Fixed issue with .._ROUTING_.. component.

library/server/ewsgi/specification/request/wgi_request.e

@@ -96,6 +96,16 @@ feature -- Access: CGI meta variables
 		deferred
 		end
 
+	meta_string_variable (a_name: READABLE_STRING_GENERAL): detachable READABLE_STRING_32
+			-- Environment variable related to `a_name'
+		require
+			a_name_valid: a_name /= Void and then not a_name.is_empty
+		do
+			if attached meta_variable (a_name) as val then
+				Result := val.as_string
+			end
+		end
+
 	meta_variables: ITERATION_CURSOR [WGI_VALUE]
 			-- These variables are specific to requests made with HTTP.
 			-- Interpretation of these variables may depend on the value of
@@ -687,10 +697,10 @@ invariant
 	query_string_attached: query_string /= Void
 	remote_addr_attached: remote_addr /= Void
 
-	same_orig_path_info: orig_path_info ~ meta_variable ({WGI_META_NAMES}.orig_path_info)
+	same_orig_path_info: orig_path_info ~ meta_string_variable ({WGI_META_NAMES}.orig_path_info)
-	same_path_info: path_info ~ meta_variable ({WGI_META_NAMES}.path_info)
+	same_path_info: path_info ~ meta_string_variable ({WGI_META_NAMES}.path_info)
 
-	path_info_identical: path_info ~ meta_variable ({WGI_META_NAMES}.path_info)
+	path_info_identical: path_info ~ meta_string_variable ({WGI_META_NAMES}.path_info)
 
 note
 	copyright: "2011-2011, Eiffel Software and others"

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

@@ -185,14 +185,6 @@ feature -- Access: CGI meta parameters
 			Result := meta_variables_table.item (a_name)
 		end
 
-	meta_string_variable (a_name: READABLE_STRING_GENERAL): detachable READABLE_STRING_32
-			-- CGI meta variable related to `a_name'
-		do
-			if attached meta_variables_table.item (a_name) as val then
-				Result := val.as_string
-			end
-		end
-
 	meta_string_variable_or_default (a_name: READABLE_STRING_GENERAL; a_default: READABLE_STRING_32; use_default_when_empty: BOOLEAN): READABLE_STRING_32
 			-- Value for meta parameter `a_name'
 			-- If not found, return `a_default'
@@ -325,8 +317,6 @@ feature -- Access: HTTP_* CGI meta parameters - 1.1
 			-- Contents of the Host: header from the current request, if there is one.
 		do
 			Result := meta_string_variable ({WGI_META_NAMES}.http_host)
-		ensure
-			Result /= Void
 		end
 
 	http_referer: detachable READABLE_STRING_32

library/server/request/rest/src/uri/rest_request_uri_routing_handler_i.e

@@ -31,7 +31,7 @@ feature -- Execution
 
 	execute (ctx: C; req: WGI_REQUEST; res: WGI_RESPONSE_BUFFER)
 		do
-			Precursor {REST_REQUEST_HANDLER} (ctx, req, res)
+			Precursor {REQUEST_URI_ROUTING_HANDLER_I} (ctx, req, res)
 		end
 
 	execute_application (ctx: C; req: WGI_REQUEST; res: WGI_RESPONSE_BUFFER)

library/server/request/rest/src/uri_template/rest_request_uri_template_routing_handler_i.e

@@ -38,7 +38,7 @@ feature -- Execution
 
 	execute (ctx: C; req: WGI_REQUEST; res: WGI_RESPONSE_BUFFER)
 		do
-			Precursor {REST_REQUEST_HANDLER} (ctx, req, res)
+			Precursor {REQUEST_URI_TEMPLATE_ROUTING_HANDLER_I} (ctx, req, res)
 		end
 
 	execute_application (ctx: C; req: WGI_REQUEST; res: WGI_RESPONSE_BUFFER)

library/server/request/router/src/request_handler_context.e

@@ -98,6 +98,8 @@ feature -- Query
 								end
 								i := i + 1
 							end
+						else
+							Result := s
 						end
 						l_accept_lst.forth
 					end