ikev1: Skip unusable IPComp proposals

Fixes #661.

diff --git a/src/libcharon/encoding/payloads/sa_payload.c b/src/libcharon/encoding/payloads/sa_payload.c
index 59dac21..407038a 100644 (file)
--- a/src/libcharon/encoding/payloads/sa_payload.c
+++ b/src/libcharon/encoding/payloads/sa_payload.c
@@ -369,7 +369,7 @@ METHOD(sa_payload_t, get_ipcomp_proposals, linked_list_t*,
                }
                if (proposal_number != current_proposal)
                {       /* start of a new proposal */
-                       if (espah && ipcomp)
+                       if (espah && ipcomp && ipcomp->get_cpi(ipcomp, NULL))
                        {       /* previous proposal is valid */
                                break;
                        }