session tcp: track half open in app wrk

Type: improvement

Do extra checks when establishing an active connect and cleanup pending
connects if application detaches.

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ibe9349db57b313ba2aa5ea3960ef5cf755f5098a
diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index 956bff0..5e0a832 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -293,6 +293,8 @@
 session_t *session_alloc (u32 thread_index);
 void session_free (session_t * s);
 void session_free_w_fifos (session_t * s);
+void session_cleanup_half_open (transport_proto_t tp,
+				session_handle_t ho_handle);
 u8 session_is_valid (u32 si, u8 thread_index);
 
 always_inline session_t *
@@ -462,6 +464,8 @@
 int session_stream_accept_notify (transport_connection_t * tc);
 void session_transport_closing_notify (transport_connection_t * tc);
 void session_transport_delete_notify (transport_connection_t * tc);
+void session_half_open_delete_notify (transport_proto_t tp,
+				      session_handle_t ho_handle);
 void session_transport_closed_notify (transport_connection_t * tc);
 void session_transport_reset_notify (transport_connection_t * tc);
 int session_stream_accept (transport_connection_t * tc, u32 listener_index,