new tmtc unix udp bridge

osal/linux/TmTcUnixUdpBridge.h

@@ -0,0 +1,48 @@
+#ifndef FRAMEWORK_OSAL_LINUX_TMTCUNIXUDPBRIDGE_H_
+#define FRAMEWORK_OSAL_LINUX_TMTCUNIXUDPBRIDGE_H_
+
+#include <framework/tmtcservices/AcceptsTelecommandsIF.h>
+#include <framework/tmtcservices/TmTcBridge.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/udp.h>
+
+class TmTcUnixUdpBridge: public TmTcBridge {
+	friend class TcUnixUdpPollingTask;
+public:
+	// The ports chosen here should not be used by any other process.
+	// List of used ports on Linux: /etc/services
+	static constexpr uint16_t DEFAULT_UDP_SERVER_PORT = 7301;
+	static constexpr uint16_t DEFAULT_UDP_CLIENT_PORT = 7302;
+
+	TmTcUnixUdpBridge(object_id_t objectId, object_id_t tcDestination,
+			object_id_t tmStoreId, object_id_t tcStoreId,
+			uint16_t serverPort = 0xFFFF,uint16_t clientPort = 0xFFFF);
+	virtual~ TmTcUnixUdpBridge();
+
+	void checkAndSetClientAddress(sockaddr_in clientAddress);
+
+protected:
+	virtual ReturnValue_t sendTm(const uint8_t * data, size_t dataLen) override;
+
+private:
+	int serverSocket = 0;
+
+	const int serverSocketOptions = 0;
+
+	struct sockaddr_in clientAddress;
+	socklen_t clientAddressLen = 0;
+
+	struct sockaddr_in serverAddress;
+	socklen_t serverAddressLen = 0;
+
+	//! Access to the client address is mutex protected as it is set
+	//! by another task.
+	MutexIF* mutex;
+
+	void handleSocketError();
+	void handleBindError();
+	void handleSendError();
+};
+
+#endif /* FRAMEWORK_OSAL_LINUX_TMTCUNIXUDPBRIDGE_H_ */