session: fix a crash when using unregistered transport proto

[vpp.git] / src / vnet / session / transport.c

diff --git a/src/vnet/session/transport.c b/src/vnet/session/transport.c
index 54ce917..192a201 100644 (file)
--- a/src/vnet/session/transport.c
+++ b/src/vnet/session/transport.c
@@ -314,6 +314,8 @@ transport_cleanup_half_open (transport_proto_t tp, u32 conn_index)
 int
 transport_connect (transport_proto_t tp, transport_endpoint_cfg_t * tep)
 {
+  if (PREDICT_FALSE (!tp_vfts[tp].connect))
+    return SESSION_E_TRANSPORT_NO_REG;
   return tp_vfts[tp].connect (tep);
 }
 
@@ -343,6 +345,8 @@ u32
 transport_start_listen (transport_proto_t tp, u32 session_index,
                        transport_endpoint_cfg_t *tep)
 {
+  if (PREDICT_FALSE (!tp_vfts[tp].start_listen))
+    return SESSION_E_TRANSPORT_NO_REG;
   return tp_vfts[tp].start_listen (session_index, tep);
 }