Added Transport close method
diff --git a/ndn-cpp/c/transport/UdpTransport.h b/ndn-cpp/c/transport/UdpTransport.h
index 262d5ec..ef113b2 100644
--- a/ndn-cpp/c/transport/UdpTransport.h
+++ b/ndn-cpp/c/transport/UdpTransport.h
@@ -39,6 +39,11 @@
   return ndn_SocketTransport_receive(&self->base, buffer, bufferLength, nBytes);
 }
 
+static inline ndn_Error ndn_UdpTransport_close(struct ndn_UdpTransport *self)
+{
+  return ndn_SocketTransport_close(&self->base);
+}
+
 #ifdef	__cplusplus
 }
 #endif