diff --git a/ndn-cpp/transport/transport.cpp b/ndn-cpp/transport/transport.cpp
index cbcb659..feb1345 100644
--- a/ndn-cpp/transport/transport.cpp
+++ b/ndn-cpp/transport/transport.cpp
@@ -25,6 +25,11 @@
   throw logic_error("unimplemented");
 }
 
+bool Transport::getIsConnected()
+{
+  throw logic_error("unimplemented");
+}
+
 void Transport::close()
 {
 }