From 0ae7a12b6b479d8a72b375507bc1f6bee35ab04c Mon Sep 17 00:00:00 2001
From: Nils <>
Date: Fri, 17 Apr 2020 17:51:34 +0200
Subject: [PATCH] failsafe for session root blocking

---
 engine/nsmservercontrol.py | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/engine/nsmservercontrol.py b/engine/nsmservercontrol.py
index 3f7a7d8..60c7f5e 100644
--- a/engine/nsmservercontrol.py
+++ b/engine/nsmservercontrol.py
@@ -566,14 +566,20 @@ class NsmServerControl(object):
         self._setPause(True)
         ready = False
         while not ready:
-            data, addr = self.sock.recvfrom(1024)
-            msg = _IncomingMessage(data)
+            try:
+                data, addr = self.sock.recvfrom(1024)
+                msg = _IncomingMessage(data)
 
-            if msg.oscpath == "/nsm/gui/session/root":
-                sessionRoot = msg.params[0]
-                ready = True
-            else:
-                self._queue.append(msg)
+                if msg.oscpath == "/nsm/gui/session/root":
+                    sessionRoot = msg.params[0]
+                    ready = True
+                else:
+                    self._queue.append(msg)
+
+            except BlockingIOError: #happens while no data is received. Has nothing to do with blocking or not.
+                continue
+            except socket.timeout:
+                continue
 
         logger.info(f"Session root directory is {sessionRoot}")
         self._setPause(False)