add service result code to log (#544)

* add service result code to log

* add diagnostics to log output
Co-authored-by: Randolph Busch <randolph.busch@ticos.ch>

asyncua/client/ua_client.py

@@ -156,8 +156,8 @@ class UASocketProtocol(asyncio.Protocol):
         data = data.copy()
         typeid = nodeid_from_binary(data)
         if typeid == ua.FourByteNodeId(ua.ObjectIds.ServiceFault_Encoding_DefaultBinary):
-            self.logger.warning("ServiceFault from server received %s", context)
             hdr = struct_from_binary(ua.ResponseHeader, data)
+            self.logger.warning("ServiceFault (%s, diagnostics: %s) from server received %s", hdr.ServiceResult.name, hdr.ServiceDiagnostics, context)
             hdr.ServiceResult.check()
             return False
         return True