transport: cleanup

- move transport specific types to transport_types
- add transport wrapper functions for interaction with transport
protocol vfts

Change-Id: I93f70d884585fc2f41c4a605e310c80e8a8972f2
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/tls/tls.c b/src/vnet/tls/tls.c
index 3f21e6e..ed12378 100644
--- a/src/vnet/tls/tls.c
+++ b/src/vnet/tls/tls.c
@@ -739,12 +739,12 @@
 
 /* *INDENT-OFF* */
 const static transport_proto_vft_t tls_proto = {
-  .open = tls_connect,
+  .connect = tls_connect,
   .close = tls_disconnect,
-  .bind = tls_start_listen,
+  .start_listen = tls_start_listen,
+  .stop_listen = tls_stop_listen,
   .get_connection = tls_connection_get,
   .get_listener = tls_listener_get,
-  .unbind = tls_stop_listen,
   .tx_type = TRANSPORT_TX_INTERNAL,
   .service_type = TRANSPORT_SERVICE_APP,
   .format_connection = format_tls_connection,