Add nng_sub0_subscribe and friends.

These are new functions that replace `NNG_OPT_SUBSCRIBE` and
`NNG_OPT_UNSUBSCRIBE`.  They are provided here as a transition
aid before those options are removed in NNG 2.0.

1 files changed, 18 insertions, 0 deletions

diff --git a/src/core/socket.c b/src/core/socket.c
index bf550a24..241b0401 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -889,12 +889,30 @@ nni_sock_proto_pipe_ops(nni_sock *sock)
 	return (&sock->s_pipe_ops);
 }
 
+struct nni_proto_sock_ops *
+nni_sock_proto_ops(nni_sock *sock)
+{
+	return (&sock->s_sock_ops);
+}
+
+struct nni_proto_ctx_ops *
+nni_ctx_proto_ops(nni_ctx *ctx)
+{
+	return (&ctx->c_ops);
+}
+
 void *
 nni_sock_proto_data(nni_sock *sock)
 {
 	return (sock->s_data);
 }
 
+void *
+nni_ctx_proto_data(nni_ctx *ctx)
+{
+	return (ctx->c_data);
+}
+
 int
 nni_sock_add_listener(nni_sock *s, nni_listener *l)
 {