diff -r 45382e1c0be0 -r 47faf2ac32d0 pvl/verkko/hosts.py
--- a/pvl/verkko/hosts.py	Wed Oct 24 18:10:42 2012 +0300
+++ b/pvl/verkko/hosts.py	Wed Oct 24 18:13:14 2012 +0300
@@ -203,7 +203,6 @@
             return html.input(type='text', name=filter, value=value)
 
         def render_cell (attr, value, cssclass=True, filter=None, htmlvalue=None) :
-            
             if htmlvalue :
                 cell = htmlvalue
             else :
@@ -451,3 +450,73 @@
 
             html.a(href=self.url())(html('«'), 'Back') if self.filters else None,
         )
+
+import json
+import time
+
+def dt2ts (dt) :
+    return int(time.mktime(dt.timetuple()))
+
+def ts2dt (ts) :
+    return datetime.datetime.fromtimestamp(ts)
+
+class RealtimeHandler (web.Handler) :
+    TITLE = "Pseudo-Realtime hosts.."
+    JS = (
+        #"/static/jquery/jquery.js",
+        'http://code.jquery.com/jquery-1.8.2.js',
+        '/static/hosts.js',
+    )
+
+    def process (self) :
+        hosts = self.db.query(Host).order_by(Host.last_seen.desc())
+        t = self.request.args.get('t')
+        
+        if t :
+            t = ts2dt(int(t))
+
+            # update
+            hosts = hosts.filter(Host.last_seen > t)
+            hosts = list(hosts)
+            hosts.reverse()
+            
+            if hosts :
+                t = hosts[-1].last_seen
+                hosts = [{'id': host.id, 't': dt2ts(host.last_seen), 'ip': host.ip, 'mac': host.mac} for host in hosts]
+            
+            else :
+                hosts = []
+
+            data = dict(
+                t       = dt2ts(t),
+                hosts   = hosts,
+            )
+
+            return web.Response(json.dumps(data), mimetype='text/json')
+
+        else :
+            self.hosts = hosts.limit(10)
+
+            # XXX: testing
+            self.hosts = self.hosts.offset(1)
+
+            self.t = self.hosts[0].last_seen
+
+    def render (self) :
+        params = dict(
+            url     = self.url(),
+            t       = dt2ts(self.t),
+        )
+        params = json.dumps(params)
+
+        return (
+            html.input(type='submit', id='refresh', value="Refresh", _selfclosing=False),
+            html.ul(id='hosts')(
+                html.li(id=host.id)("{host.ip} / {host.mac}".format(host=host)) for host in self.hosts
+            ),
+            html.script(type='text/javascript')("""
+$(document).ready(hosts_realtime({params}));
+""".format(params=params)
+            )
+        )
+