Make sure connection is added to m.protoConn and m.rawConn before it's Start()ed (fixes #2034)

internal/model/model.go

@@ -983,6 +983,8 @@ func (m *Model) AddConnection(rawConn io.Closer, protoConn protocol.Connection)
 	}
 	m.rawConn[deviceID] = rawConn
 
+	protoConn.Start()
+
 	cm := m.clusterConfig(deviceID)
 	protoConn.ClusterConfig(cm)
 

internal/model/model_test.go

@@ -242,6 +242,9 @@ func (FakeConnection) Close() error {
 	return nil
 }
 
+func (f FakeConnection) Start() {
+}
+
 func (f FakeConnection) ID() protocol.DeviceID {
 	return f.id
 }