adding __str__ to make export to har nicer

libmproxy/flow.py

@@ -812,6 +812,11 @@ class ClientConnect(controller.Msg):
     def __eq__(self, other):
         return self._get_state() == other._get_state()
 
+    def __str__(self):
+        if self.address:
+            return "%s:%d"%(self.address[0],self.address[1])
+        return "None"
+
     def _load_state(self, state):
         self.close = True
         self.error = state["error"]