update scripts/servers to display server version

lib/network.py

@@ -120,18 +120,21 @@ def parse_servers(result):
                 elif re.match("p\d*", v):
                     pruning_level = v[1:]
                 if pruning_level == '': pruning_level = '0'
-        try:
-            is_recent = util.normalize_version(version) >= util.normalize_version(PROTOCOL_VERSION)
-        except Exception as e:
-            print_error(e)
-            is_recent = False
-
-        if out and is_recent:
+        if out:
             out['pruning'] = pruning_level
+            out['version'] = version
             servers[host] = out
-
     return servers
 
+def filter_version(servers):
+    def is_recent(version):
+        try:
+            return util.normalize_version(version) >= util.normalize_version(PROTOCOL_VERSION)
+        except Exception as e:
+            return False
+    return {k: v for k, v in servers.items() if is_recent(v.get('version'))}
+
+
 def filter_protocol(hostmap, protocol = 's'):
     '''Filters the hostmap for those implementing protocol.
     The result is a list in serialized form.'''
@@ -574,7 +577,7 @@ class Network(util.DaemonThread):
                 self.on_notify_header(interface, result)
         elif method == 'server.peers.subscribe':
             if error is None:
-                self.irc_servers = parse_servers(result)
+                self.irc_servers = filter_version(parse_servers(result))
                 self.notify('servers')
         elif method == 'server.banner':
             if error is None: