ikev2: Send INVALID_MAJOR_VERSION notify using the same exchange type and MID

This is per RFC 7296, section 1.5.

diff --git a/src/libcharon/network/receiver.c b/src/libcharon/network/receiver.c
index acdba34..67a2529 100644 (file)
--- a/src/libcharon/network/receiver.c
+++ b/src/libcharon/network/receiver.c
@@ -176,8 +176,8 @@ static void send_notify(message_t *request, int major, exchange_type_t exchange,
        if (major == IKEV2_MAJOR_VERSION)
        {
                response->set_request(response, FALSE);
+               response->set_message_id(response, request->get_message_id(request));
        }
-       response->set_message_id(response, 0);
        ike_sa_id = request->get_ike_sa_id(request);
        ike_sa_id->switch_initiator(ike_sa_id);
        response->set_ike_sa_id(response, ike_sa_id);
@@ -520,7 +520,8 @@ static job_requeue_t receive_packets(private_receiver_t *this)
                        break;
                default:
 #ifdef USE_IKEV2
-                       send_notify(message, IKEV2_MAJOR_VERSION, INFORMATIONAL,
+                       send_notify(message, IKEV2_MAJOR_VERSION,
+                                               message->get_exchange_type(message),
                                                INVALID_MAJOR_VERSION, chunk_empty);
 #elif defined(USE_IKEV1)
                        send_notify(message, IKEV1_MAJOR_VERSION, INFORMATIONAL_V1,