From ec9a2b02eac01a41098b6de4cc01d1de17b26c59 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Fri, 23 Mar 2018 17:51:45 +0200
Subject: [PATCH] Verify mDNS devices before dumping  // Issue #1381

---
 platformio/util.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/platformio/util.py b/platformio/util.py
index 09f5e52e..c0adb874 100644
--- a/platformio/util.py
+++ b/platformio/util.py
@@ -530,9 +530,10 @@ def get_mdns_services():
         for service in mdns.get_services():
             properties = None
             try:
-                assert str(service.properties)
+                if service.properties:
+                    json.dumps(service.properties)
                 properties = service.properties
-            except (AssertionError, UnicodeError):
+            except UnicodeDecodeError:
                 pass
 
             items.append({