connection between 2 systems and bug fixes (#14)

sdv_services/uds_unix_sockets/watchdog.h

@@ -0,0 +1,47 @@
+/********************************************************************************
+* Copyright (c) 2025-2026 ZF Friedrichshafen AG
+*
+* This program and the accompanying materials are made available under the
+* terms of the Apache License Version 2.0 which is available at
+* https://www.apache.org/licenses/LICENSE-2.0
+*
+* SPDX-License-Identifier: Apache-2.0
+*
+* Contributors:
+*   Denisa Ros - initial API and implementation
+********************************************************************************/
+
+#if defined(__unix__)
+#ifndef UDS_UNIX_SOCKETS_WATCHDOG_H
+#define UDS_UNIX_SOCKETS_WATCHDOG_H
+
+#include <map>
+#include <memory>
+#include <mutex>
+
+class CUnixSocketsConnectionWatchDog
+{
+public:
+    template<typename T>
+    void AddConnection(const std::shared_ptr<T>& connection)
+    {
+        if (!connection)
+        {
+            return;
+        }
+
+        AddConnectionImpl(std::static_pointer_cast<void>(connection));
+    }
+
+    void RemoveConnection(const void* connection);
+    void Clear();
+
+private:
+    void AddConnectionImpl(const std::shared_ptr<void>& connection);
+
+    std::mutex m_Mutex;
+    std::map<const void*, std::shared_ptr<void>> m_Connections;
+};
+
+#endif // UDS_UNIX_SOCKETS_WATCHDOG_H
+#endif // defined(__unix__)