Merge branch 'master' into develop

3 files changed, 7 insertions, 1 deletions

diff --git a/sleekxmpp/xmlstream/resolver.py b/sleekxmpp/xmlstream/resolver.py
index 455ab8d0..0d7a8c0d 100644
--- a/sleekxmpp/xmlstream/resolver.py
+++ b/sleekxmpp/xmlstream/resolver.py
@@ -254,6 +254,7 @@ def get_SRV(host, port, service, proto='tcp', resolver=None):
              by SRV priorities and weights.
     """
     if resolver is None:
+        log.warning("DNS: dnspython not found. Can not use SRV lookup.")
         return [(host, port)]
 
     log.debug("DNS: Querying SRV records for %s" % host)
diff --git a/sleekxmpp/xmlstream/scheduler.py b/sleekxmpp/xmlstream/scheduler.py
index 70e36f24..f68af081 100644
--- a/sleekxmpp/xmlstream/scheduler.py
+++ b/sleekxmpp/xmlstream/scheduler.py
@@ -172,7 +172,8 @@ class Scheduler(object):
                 else:
                     updated = True
                     self.schedule_lock.acquire()
-                    self.schedule.append(newtask)
+                    if newtask is not None:
+                        self.schedule.append(newtask)
                 finally:
                     if updated:
                         self.schedule = sorted(self.schedule,
diff --git a/sleekxmpp/xmlstream/xmlstream.py b/sleekxmpp/xmlstream/xmlstream.py
index 3baa5b80..49f33933 100644
--- a/sleekxmpp/xmlstream/xmlstream.py
+++ b/sleekxmpp/xmlstream/xmlstream.py
@@ -954,6 +954,10 @@ class XMLStream(object):
         else:
             self.__filters[mode].append(handler)
 
+    def del_filter(self, mode, handler):
+        """Remove an incoming or outgoing filter."""
+        self.__filters[mode].remove(handler)
+
     def add_handler(self, mask, pointer, name=None, disposable=False,
                     threaded=False, filter=False, instream=False):
         """A shortcut method for registering a handler using XML masks.