Added https support with Net implementation.

Added notion of default HTTP_CLIENT, to be able to build portable code among http client implementation.

library/network/http_client/tests/test.e

@@ -13,16 +13,40 @@ feature -- Init
 			if attached null.new_session ("http://example.com/") as l_sess then
 				check not l_sess.is_available end
 			end
+			test_get_with_authentication
 			test_http_client
 		end
 
+	test_get_with_authentication
+		local
+			cl: DEFAULT_HTTP_CLIENT
+			sess: HTTP_CLIENT_SESSION
+			ctx: HTTP_CLIENT_REQUEST_CONTEXT
+		do
+				-- GET REQUEST WITH AUTHENTICATION, see http://browserspy.dk/password.php
+				-- check header WWW-Authenticate is received (authentication successful)
+			create cl
+			sess := cl.new_session ("http://browserspy.dk")
+			sess.set_credentials ("test", "test")
+			create ctx.make_with_credentials_required
+			if attached sess.get ("/password-ok.php", ctx) as res then
+				if attached {READABLE_STRING_8} res.body as l_body then
+					assert ("Fetch all body, including closing html tag", l_body.has_substring ("</html>"))
+				else
+					assert ("has body", False)
+				end
+			end
+		end
+
 	test_http_client
 			-- New test routine
 		local
-			sess: LIBCURL_HTTP_CLIENT_SESSION
+			cl: DEFAULT_HTTP_CLIENT
+			sess: HTTP_CLIENT_SESSION
 			h: STRING_8
 		do
-			create sess.make ("http://www.google.com")
+			create cl
+			sess := cl.new_session ("http://www.google.com")
 			if attached sess.get ("/search?q=eiffel", Void) as res then
 				assert ("Get returned without error", not res.error_occurred)
 				create h.make_empty