Added WSF_CUSTOM_HEADER_FILTER which provide a convenient way to add a custom header from a filter.

Added to wsf_extension WSF_DEBUG_FILTER and WSF_DEBUG_HANDLER that could be convenient to test specific requests
Restructured wsf_extension

library/server/wsf/extension/filter/wsf_debug_filter.e

@@ -0,0 +1,117 @@
+note
+	description: "Summary description for {WSF_DEBUG_FILTER}."
+	date: "$Date: 2013-05-23 21:54:29 +0200 (jeu., 23 mai 2013) $"
+	revision: "$Revision: 92585 $"
+
+class
+	WSF_DEBUG_FILTER
+
+inherit
+	WSF_FILTER
+
+create
+	default_create,
+	make
+
+feature {NONE} -- Initialization
+
+	make (a_output: FILE)
+		do
+			output := a_output
+		end
+
+	output: detachable FILE
+
+feature -- Basic operations
+
+	execute (req: WSF_REQUEST; res: WSF_RESPONSE)
+			-- Execute the filter
+		local
+			s: STRING_8
+		do
+			create s.make (2048)
+			if attached req.content_type as l_type then
+				s.append ("[length=")
+				s.append_natural_64 (req.content_length_value)
+				s.append_character (']')
+				s.append_character (' ')
+				s.append (l_type.debug_output)
+				s.append_character ('%N')
+			end
+
+			append_iterable_to ("Path parameters", req.path_parameters, s)
+			append_iterable_to ("Query parameters", req.query_parameters, s)
+			append_iterable_to ("Form parameters", req.form_parameters, s)
+
+			if not s.is_empty then
+				s.prepend ("**DEBUG**%N")
+				if attached output as o then
+					o.put_string (s)
+				else
+					res.put_error (s)
+				end
+			end
+			execute_next (req, res)
+		end
+
+	append_iterable_to (a_title: READABLE_STRING_8; it: detachable ITERABLE [WSF_VALUE]; s: STRING_8)
+		local
+			n: INTEGER
+		do
+			if it /= Void then
+				across it as c loop
+					n := n + 1
+				end
+				if n > 0 then
+					s.append (a_title)
+					s.append_character (':')
+					s.append_character ('%N')
+					across
+						it as c
+					loop
+						s.append ("  - ")
+						s.append (c.item.url_encoded_name)
+						s.append_character (' ')
+						s.append_character ('{')
+						s.append (c.item.generating_type)
+						s.append_character ('}')
+						s.append_character ('=')
+						s.append (c.item.debug_output.as_string_8)
+						s.append_character ('%N')
+					end
+				end
+			end
+		end
+
+note
+	copyright: "Copyright (c) 1984-2013, Eiffel Software"
+	license: "GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)"
+	licensing_options: "http://www.eiffel.com/licensing"
+	copying: "[
+			This file is part of Eiffel Software's Eiffel Development Environment.
+			
+			Eiffel Software's Eiffel Development Environment is free
+			software; you can redistribute it and/or modify it under
+			the terms of the GNU General Public License as published
+			by the Free Software Foundation, version 2 of the License
+			(available at the URL listed under "license" above).
+			
+			Eiffel Software's Eiffel Development Environment is
+			distributed in the hope that it will be useful, but
+			WITHOUT ANY WARRANTY; without even the implied warranty
+			of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+			See the GNU General Public License for more details.
+			
+			You should have received a copy of the GNU General Public
+			License along with Eiffel Software's Eiffel Development
+			Environment; if not, write to the Free Software Foundation,
+			Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+		]"
+	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

library/server/wsf/extension/handler/wsf_debug_handler.e

@@ -0,0 +1,174 @@
+note
+	description: "Summary description for {WSF_DEBUG_HANDLER}."
+	author: ""
+	date: "$Date: 2013-06-28 16:14:02 +0200 (ven., 28 juin 2013) $"
+	revision: "$Revision: 92754 $"
+
+class
+	WSF_DEBUG_HANDLER
+
+inherit
+	WSF_STARTS_WITH_HANDLER
+		rename
+			execute as execute_starts_with
+		end
+
+	WSF_SELF_DOCUMENTED_HANDLER
+
+	SHARED_HTML_ENCODER
+
+	SHARED_WSF_PERCENT_ENCODER
+		rename
+			percent_encoder as url_encoder
+		export
+			{NONE} all
+		end
+
+	SHARED_EXECUTION_ENVIRONMENT
+		export
+			{NONE} all
+		end
+
+create
+	make,
+	make_hidden
+
+feature {NONE} -- Initialization
+
+	make
+		do
+		end
+
+	make_hidden
+		do
+			make
+			is_hidden := True
+		end
+
+	is_hidden: BOOLEAN
+			-- Current mapped handler should be hidden from self documentation		
+
+feature -- Documentation
+
+	mapping_documentation (m: WSF_ROUTER_MAPPING; a_request_methods: detachable WSF_REQUEST_METHODS): WSF_ROUTER_MAPPING_DOCUMENTATION
+			-- <Precursor>
+		do
+			create Result.make (m)
+			Result.set_is_hidden (is_hidden)
+			Result.add_description ("Debug handler (mainly to return request information)")
+		end
+
+feature -- Access	
+
+	execute_starts_with (a_path: READABLE_STRING_8; req: WSF_REQUEST; res: WSF_RESPONSE)
+		local
+			s: STRING_8
+			p: WSF_PAGE_RESPONSE
+			v: STRING_8
+		do
+			if (create {RT_DEBUGGER}).rt_workbench_wait_for_debugger (1050) then
+			end
+			create s.make (2048)
+			s.append ("**DEBUG**%N")
+			req.set_raw_input_data_recorded (True)
+
+			append_iterable_to ("Meta variables:", req.meta_variables, s)
+			s.append_character ('%N')
+
+			append_iterable_to ("Path parameters", req.path_parameters, s)
+			s.append_character ('%N')
+
+			append_iterable_to ("Query parameters", req.query_parameters, s)
+			s.append_character ('%N')
+
+			append_iterable_to ("Form parameters", req.form_parameters, s)
+			s.append_character ('%N')
+
+			if attached req.content_type as l_type then
+				s.append ("Content: type=" + l_type.debug_output)
+				s.append (" length=")
+				s.append_natural_64 (req.content_length_value)
+				s.append_character ('%N')
+				create v.make (req.content_length_value.to_integer_32)
+				req.read_input_data_into (v)
+				across
+					v.split ('%N') as v_cursor
+				loop
+					s.append ("     |")
+					s.append (v_cursor.item)
+					s.append_character ('%N')
+				end
+			end
+
+			create p.make_with_body (s)
+			p.header.put_content_type_text_plain
+			res.send (p)
+
+		end
+
+feature {NONE} -- Implementation
+
+	append_iterable_to (a_title: READABLE_STRING_8; it: detachable ITERABLE [WSF_VALUE]; s: STRING_8)
+		local
+			n: INTEGER
+			t: READABLE_STRING_8
+			v: READABLE_STRING_8
+		do
+			s.append (a_title)
+			s.append_character (':')
+			if it /= Void then
+				across it as c loop
+					n := n + 1
+				end
+				if n = 0 then
+					s.append (" empty")
+					s.append_character ('%N')
+				else
+					s.append_character ('%N')
+					across
+						it as c
+					loop
+						s.append ("  - ")
+						s.append (c.item.url_encoded_name)
+						t := c.item.generating_type
+						if t.same_string ("WSF_STRING") then
+						else
+							s.append_character (' ')
+							s.append_character ('{')
+							s.append (t)
+							s.append_character ('}')
+						end
+						s.append_character ('=')
+						v := c.item.string_representation.as_string_8
+						if v.has ('%N') then
+							s.append_character ('%N')
+							across
+								v.split ('%N') as v_cursor
+							loop
+								s.append ("     |")
+								s.append (v_cursor.item)
+								s.append_character ('%N')
+							end
+						else
+							s.append (v)
+							s.append_character ('%N')
+						end
+					end
+				end
+			else
+				s.append (" none")
+				s.append_character ('%N')
+			end
+		end
+
+note
+	copyright: "2011-2013, Jocelyn Fiat, Javier Velilla, Olivier Ligot, 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

library/server/wsf/router/filter/wsf_custom_header_filter.e

@@ -0,0 +1,66 @@
+note
+	description: "Summary description for {WSF_CUSTOM_HEADER_FILTER}."
+	date: "$Date: 2013-05-23 21:54:29 +0200 (jeu., 23 mai 2013) $"
+	revision: "$Revision: 92585 $"
+
+class
+	WSF_CUSTOM_HEADER_FILTER
+
+inherit
+	WSF_FILTER
+
+create
+	make
+
+feature {NONE} -- Initialization
+
+	make (n: INTEGER)
+		do
+			create custom_header.make_with_count (n)
+		end
+
+feature -- Access
+
+	custom_header: HTTP_HEADER
+
+feature -- Basic operations
+
+	execute (req: WSF_REQUEST; res: WSF_RESPONSE)
+			-- Execute the filter
+		do
+			res.put_header_lines (custom_header)
+			execute_next (req, res)
+		end
+
+note
+	copyright: "Copyright (c) 1984-2013, Eiffel Software"
+	license: "GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)"
+	licensing_options: "http://www.eiffel.com/licensing"
+	copying: "[
+			This file is part of Eiffel Software's Eiffel Development Environment.
+			
+			Eiffel Software's Eiffel Development Environment is free
+			software; you can redistribute it and/or modify it under
+			the terms of the GNU General Public License as published
+			by the Free Software Foundation, version 2 of the License
+			(available at the URL listed under "license" above).
+			
+			Eiffel Software's Eiffel Development Environment is
+			distributed in the hope that it will be useful, but
+			WITHOUT ANY WARRANTY; without even the implied warranty
+			of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+			See the GNU General Public License for more details.
+			
+			You should have received a copy of the GNU General Public
+			License along with Eiffel Software's Eiffel Development
+			Environment; if not, write to the Free Software Foundation,
+			Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+		]"
+	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