Added system setting(agent_screen_timer) for selection of JavaScript timer: setTimeout or EventSource for the agent screen

git-svn-id: svn://192.168.202.10@3407 3d104415-ff17-0410-8863-d5cf3c621b8a

agc_2-X/trunk/www/agc/sse.php

@@ -0,0 +1,9 @@
+<?php
+header('Content-Type: text/event-stream');
+header('Cache-Control: no-cache');
+
+$time = date('r');
+// If the connection closes, retry in 1 second
+echo "retry: {$_GET['refresh_interval']}\n";
+echo "data: The server time is: {$time}\n\n";
+flush();