[Update] 修复child shutdown可能的bug

coco/interactive.py

@@ -263,7 +263,7 @@ class InteractiveServer:
         self.display_banner()
         while True:
             try:
-                opt = net_input(self.client, prompt='Opt>', before=1)
+                opt = net_input(self.client, prompt='Opt> ', before=1)
                 rv = self.dispatch(opt)
                 if rv is self._sentinel:
                     break

coco/models.py

@@ -264,8 +264,11 @@ class WSProxy:
 
     def close(self):
         self.stop_event.set()
-        self.child.shutdown(1)
-        self.child.close()
+        try:
+            self.child.shutdown(1)
+            self.child.close()
+        except OSError:
+            pass
         logger.debug("Proxy {} closed".format(self))