Don't set IKEv2 only header flags when using IKEv1

diff --git a/src/libcharon/encoding/message.c b/src/libcharon/encoding/message.c
index 91d7f3df9b7962af49a27ff3473a65f99d66a19d..6640b7696a41e80abfd25034809cf6088ec125a1 100644 (file)
--- a/src/libcharon/encoding/message.c
+++ b/src/libcharon/encoding/message.c
@@ -1315,10 +1315,13 @@ METHOD(message_t, generate, status_t,
                                                                                   this->minor_version);
        ike_header->set_exchange_type(ike_header, this->exchange_type);
        ike_header->set_message_id(ike_header, this->message_id);
-       ike_header->set_response_flag(ike_header, !this->is_request);
-       ike_header->set_version_flag(ike_header, this->version_flag);
-       ike_header->set_initiator_flag(ike_header,
+       if (this->major_version == IKEV2_MAJOR_VERSION)
+       {
+               ike_header->set_response_flag(ike_header, !this->is_request);
+               ike_header->set_version_flag(ike_header, this->version_flag);
+               ike_header->set_initiator_flag(ike_header,
                                                this->ike_sa_id->is_initiator(this->ike_sa_id));
+       }
        ike_header->set_initiator_spi(ike_header,
                                                this->ike_sa_id->get_initiator_spi(this->ike_sa_id));
        ike_header->set_responder_spi(ike_header,