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Diffstat (limited to 'src/protocol/pair0/pair.c')
-rw-r--r--src/protocol/pair0/pair.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/protocol/pair0/pair.c b/src/protocol/pair0/pair.c
index 2fb42df5..87900793 100644
--- a/src/protocol/pair0/pair.c
+++ b/src/protocol/pair0/pair.c
@@ -129,6 +129,11 @@ pair0_pipe_start(void *arg)
pair0_pipe *p = arg;
pair0_sock *s = p->psock;
+ if (nni_pipe_peer(p->npipe) != NNI_PROTO_PAIR_V0) {
+ // Peer protocol mismatch.
+ return (NNG_EPROTO);
+ }
+
nni_mtx_lock(&s->mtx);
if (s->ppipe != NULL) {
nni_mtx_unlock(&s->mtx);