--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libervia/frontends/bridge/bridge_frontend.py	Fri Jun 02 14:12:38 2023 +0200
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+
+
+# SAT communication bridge
+# Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+class BridgeException(Exception):
+    """An exception which has been raised from the backend and arrived to the frontend."""
+
+    def __init__(self, name, message="", condition=""):
+        """
+
+        @param name (str): full exception class name (with module)
+        @param message (str): error message
+        @param condition (str) : error condition
+        """
+        super().__init__()
+        self.fullname = str(name)
+        self.message = str(message)
+        self.condition = str(condition) if condition else ""
+        self.module, __, self.classname = str(self.fullname).rpartition(".")
+
+    def __str__(self):
+        return self.classname + (f": {self.message}" if self.message else "")
+
+    def __eq__(self, other):
+        return self.classname == other