created common OSAL stuff to unify UDP code

osal/common/TcpIpBase.cpp

@@ -0,0 +1,52 @@
+#include "TcpIpBase.h"
+
+#ifdef __unix__
+
+#include <unistd.h>
+
+#endif
+
+TcpIpBase::TcpIpBase() {
+    closeSocket(serverSocket);
+}
+
+TcpIpBase::~TcpIpBase() {
+#ifdef _WIN32
+    WSACleanup();
+#endif
+}
+
+
+int TcpIpBase::closeSocket(socket_t socket) {
+#ifdef _WIN32
+    return closesocket(socket);
+#elif defined(__unix__)
+    return close(socket)
+#endif
+}
+
+int TcpIpBase::getLastSocketError() {
+#ifdef _WIN32
+    return WSAGetLastError();
+#elif defined(__unix__)
+    return errno;
+#endif
+}
+
+ReturnValue_t TcpIpBase::initialize() {
+#ifdef _WIN32
+    /* Initiates Winsock DLL. */
+    WSAData wsaData;
+    WORD wVersionRequested = MAKEWORD(2, 2);
+    int err = WSAStartup(wVersionRequested, &wsaData);
+    if (err != 0) {
+        /* Tell the user that we could not find a usable Winsock DLL. */
+#if FSFW_CPP_OSTREAM_ENABLED == 1
+        sif::error << "TmTcWinUdpBridge::TmTcWinUdpBridge: WSAStartup failed with error: " <<
+                err << std::endl;
+#endif
+        return HasReturnvaluesIF::RETURN_FAILED;
+    }
+#endif
+    return HasReturnvaluesIF::RETURN_OK;
+}