finsihed tcpip refactoring for linux udp

osal/common/tcpipCommon.cpp

@@ -0,0 +1,36 @@
+#include "tcpipCommon.h"
+
+void tcpip::determineErrorStrings(Protocol protocol, ErrorSources errorSrc, std::string &protStr,
+        std::string &srcString) {
+    if(protocol == Protocol::TCP) {
+        protStr = "TCP";
+    }
+    else if(protocol == Protocol::UDP) {
+        protStr = "UDP";
+    }
+    else {
+        protStr = "Unknown protocol";
+    }
+
+    if(errorSrc == ErrorSources::SETSOCKOPT_CALL) {
+        srcString = "setsockopt call";
+    }
+    else if(errorSrc == ErrorSources::SOCKET_CALL) {
+        srcString = "socket call";
+    }
+    else if(errorSrc == ErrorSources::LISTEN_CALL) {
+        srcString = "listen call";
+    }
+    else if(errorSrc == ErrorSources::ACCEPT_CALL) {
+        srcString = "accept call";
+    }
+    else if(errorSrc == ErrorSources::RECVFROM_CALL) {
+        srcString = "recvfrom call";
+    }
+    else if(errorSrc == ErrorSources::GETADDRINFO_CALL) {
+        srcString = "getaddrinfo call";
+    }
+    else {
+        srcString = "unknown call";
+    }
+}