From 91dd7efd565c75afc1df924eb7d1707c23a046b5 Mon Sep 17 00:00:00 2001
From: Felix <felix.divo@gmail.com>
Date: Wed, 9 Jun 2021 11:13:41 +0200
Subject: [PATCH 1/4] Supress exception occuring in NIXNET
 _detect_available_configs()

---
 can/interfaces/nixnet.py | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/can/interfaces/nixnet.py b/can/interfaces/nixnet.py
index 993c215dd..4593bddb5 100644
--- a/can/interfaces/nixnet.py
+++ b/can/interfaces/nixnet.py
@@ -225,18 +225,23 @@ def shutdown(self):
     @staticmethod
     def _detect_available_configs():
         configs = []
-        nixnet_system = system.System()
-        for can_intf in nixnet_system.intf_refs_can:
-            logger.info("Channel index %d: %s", can_intf.port_num, str(can_intf))
-            configs.append(
-                {
-                    "interface": "nixnet",
-                    "channel": str(can_intf),
-                    "can_term_available": can_intf.can_term_cap
-                    == constants.CanTermCap.YES,
-                }
-            )
-        nixnet_system.close()
+
+        try:
+            with system.System() as nixnet_system:
+                for interface in nixnet_system.intf_refs_can:
+                    cahnnel = str(interface)
+                    logger.debug("Found channel index %d: %s", interface.port_num, cahnnel)
+                    configs.append(
+                        {
+                            "interface": "nixnet",
+                            "channel": cahnnel,
+                            "can_term_available": interface.can_term_cap
+                            == constants.CanTermCap.YES,
+                        }
+                    )
+        except XnetNotFoundError as error:
+            logger.debug("An error occured while searching for configs: %s", str(error))
+
         return configs
 
 

From b964949da48f8f328d311307941033851176921e Mon Sep 17 00:00:00 2001
From: Felix <felix.divo@gmail.com>
Date: Wed, 9 Jun 2021 09:14:30 +0000
Subject: [PATCH 2/4] Format code with black

---
 can/interfaces/nixnet.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/can/interfaces/nixnet.py b/can/interfaces/nixnet.py
index 4593bddb5..0bb9c3235 100644
--- a/can/interfaces/nixnet.py
+++ b/can/interfaces/nixnet.py
@@ -230,7 +230,9 @@ def _detect_available_configs():
             with system.System() as nixnet_system:
                 for interface in nixnet_system.intf_refs_can:
                     cahnnel = str(interface)
-                    logger.debug("Found channel index %d: %s", interface.port_num, cahnnel)
+                    logger.debug(
+                        "Found channel index %d: %s", interface.port_num, cahnnel
+                    )
                     configs.append(
                         {
                             "interface": "nixnet",

From 7520d215dca722437cfaf929d145464fd6619748 Mon Sep 17 00:00:00 2001
From: Felix <felix.divo@gmail.com>
Date: Wed, 9 Jun 2021 11:19:31 +0200
Subject: [PATCH 3/4] fix error import

---
 can/interfaces/nixnet.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/can/interfaces/nixnet.py b/can/interfaces/nixnet.py
index 4593bddb5..e7296dbab 100644
--- a/can/interfaces/nixnet.py
+++ b/can/interfaces/nixnet.py
@@ -19,7 +19,7 @@
 
 if sys.platform == "win32":
     try:
-        from nixnet import session, types, constants, errors, system, database
+        from nixnet import session, types, constants, errors, system, database, XnetError
     except ImportError:
         logger.error("Error, NIXNET python module cannot be loaded.")
         raise ImportError()
@@ -239,7 +239,7 @@ def _detect_available_configs():
                             == constants.CanTermCap.YES,
                         }
                     )
-        except XnetNotFoundError as error:
+        except XnetError as error:
             logger.debug("An error occured while searching for configs: %s", str(error))
 
         return configs

From d61590daa5eae24249c46aaef69e012ad38a23a0 Mon Sep 17 00:00:00 2001
From: Felix <felix.divo@gmail.com>
Date: Wed, 9 Jun 2021 09:20:44 +0000
Subject: [PATCH 4/4] Format code with black

---
 can/interfaces/nixnet.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/can/interfaces/nixnet.py b/can/interfaces/nixnet.py
index fd392840c..f50daf4c9 100644
--- a/can/interfaces/nixnet.py
+++ b/can/interfaces/nixnet.py
@@ -19,7 +19,15 @@
 
 if sys.platform == "win32":
     try:
-        from nixnet import session, types, constants, errors, system, database, XnetError
+        from nixnet import (
+            session,
+            types,
+            constants,
+            errors,
+            system,
+            database,
+            XnetError,
+        )
     except ImportError:
         logger.error("Error, NIXNET python module cannot be loaded.")
         raise ImportError()