Add get_endpoint in transport vft

This allows QUIC & TLS specific logic to be implemented, and meaningfull
IP/port to be returned when connection is overridden.

Change-Id: Id79c59fe4d7b16d36f0e96ad3e281c4026b5fe65
Signed-off-by: Aloys Augustin <aloaugus@cisco.com>
diff --git a/src/vnet/session/transport.h b/src/vnet/session/transport.h
index 993b8bd..73d7fba 100644
--- a/src/vnet/session/transport.h
+++ b/src/vnet/session/transport.h
@@ -62,6 +62,11 @@
   u8 *(*format_listener) (u8 * s, va_list * args);
   u8 *(*format_half_open) (u8 * s, va_list * args);
 
+  /* External API response */
+
+  void (*get_transport_endpoint) (u32 conn_index, u32 thread_index, ip46_address_t * ip, u16 * port, u8 * is_ip4, u8 is_lcl);
+  void (*get_transport_listener_endpoint) (u32 conn_index, ip46_address_t * ip, u16 * port, u8 * is_ip4, u8 is_lcl);
+
   /*
    * Properties
    */
@@ -86,6 +91,12 @@
 u32 transport_stop_listen (transport_proto_t tp, u32 conn_index);
 void transport_cleanup (transport_proto_t tp, u32 conn_index,
 			u8 thread_index);
+void transport_get_endpoint (transport_proto_t tp, u32 conn_index,
+			     u32 thread_index, ip46_address_t * ip,
+			     u16 * port, u8 * is_ip4, u8 is_lcl);
+void transport_get_listener_endpoint (transport_proto_t tp, u32 conn_index,
+				      ip46_address_t * ip, u16 * port,
+				      u8 * is_ip4, u8 is_lcl);
 
 static inline transport_connection_t *
 transport_get_connection (transport_proto_t tp, u32 conn_index,