remove reactor.iterate from dht shutdown

lbrynet/dht/protocol.py

@@ -21,6 +21,7 @@ import msgtypes
 import msgformat
 from contact import Contact
 
+
 reactor = twisted.internet.reactor
 log = logging.getLogger(__name__)
 
@@ -143,7 +144,9 @@ class KademliaProtocol(protocol.DatagramProtocol):
                 del self._sentMessages[message.id]
 
                 if hasattr(df, '_rpcRawResponse'):
-                    # The RPC requested that the raw response message and originating address be returned; do not interpret it
+                    # The RPC requested that the raw response message
+                    # and originating address be returned; do not
+                    # interpret it
                     df.callback((message, address))
                 elif isinstance(message, msgtypes.ErrorMessage):
                     # The RPC request raised a remote exception; raise it locally
@@ -301,19 +304,19 @@ class KademliaProtocol(protocol.DatagramProtocol):
             df.errback(failure.Failure(TimeoutError(remoteContactID)))
         else:
             # This should never be reached
-            print "ERROR: deferred timed out, but is not present in sent messages list!"
+            log.error("deferred timed out, but is not present in sent messages list!")
 
     def stopProtocol(self):
         """ Called when the transport is disconnected.
 
         Will only be called once, after all ports are disconnected.
         """
+        log.info('Stopping dht')
         for key in self._callLaterList.keys():
             try:
                 if key > time.time():
+                    log.info('Cancelling %s', self._callLaterList[key])
                     self._callLaterList[key].cancel()
             except Exception, e:
-                print e
+                log.exception('Failed to cancel %s', self._callLaterList[key])
             del self._callLaterList[key]
-            #TODO: test: do we really need the reactor.iterate() call?
-            reactor.iterate()