Reuse http_network library.

Reintroduced HTTPD_STREAM_SOCKET for backward compatibility, and ease of usage.
Added websocket libraries (client, and protocol).

library/server/httpd/network/httpd_socket_factory.e

@@ -0,0 +1,30 @@
+note
+	description: "Summary description for {HTTPD_SOCKET_FACTORY}."
+	date: "$Date$"
+	revision: "$Revision$"
+
+deferred class
+	HTTPD_SOCKET_FACTORY
+
+feature -- Access
+
+	new_client_socket (a_is_secure: BOOLEAN): HTTPD_STREAM_SOCKET
+		do
+			if a_is_secure then
+				create {HTTPD_STREAM_SSL_SOCKET} Result.make_empty
+			else
+				create Result.make_empty
+			end
+		end
+
+note
+	copyright: "2011-2016, Jocelyn Fiat, Javier Velilla, 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