GUSI 2.0.5 has a non-functional getsockname() if you use Open Transport. For now the workaround is to only enable MacTCP sockets.

jackjansen · jackjansen · commit 9cfce18c4f73 · 2000-05-10T15:15:54.000Z
diff --git a/Mac/Python/gusiconfig.cpp b/Mac/Python/gusiconfig.cpp
@@ -48,7 +48,8 @@ void GUSISetupFactories()
 #ifdef GUSISetupFactories_BeginHook
 	GUSISetupFactories_BeginHook
 #endif
-	GUSIwithInetSockets();
+//	GUSIwithInetSockets();
+	GUSIwithMTInetSockets();
 #ifdef GUSISetupFactories_EndHook
 	GUSISetupFactories_EndHook
 #endif
