Refactor option handling APIs.

This makes the APIs use string keys, and largely eliminates the use of
integer option IDs altogether.  The underlying registration for options
is also now a bit richer, letting protcols and transports declare the
actual options they use, rather than calling down into each entry point
carte blanche and relying on ENOTSUP.

This code may not be as fast as the integers was, but it is more intuitive,
easier to extend, and is not on any hot code paths.  (If you're diddling
options on a hot code path you're doing something wrong.)

1 files changed, 13 insertions, 10 deletions

diff --git a/src/core/defs.h b/src/core/defs.h
index 4d8e6ffb..ff02b28b 100644
--- a/src/core/defs.h
+++ b/src/core/defs.h
@@ -32,16 +32,19 @@ typedef struct nng_event    nni_event;
 typedef struct nng_notify   nni_notify;
 
 // These are our own names.
-typedef struct nni_socket    nni_sock;
-typedef struct nni_ep        nni_ep;
-typedef struct nni_pipe      nni_pipe;
-typedef struct nni_tran      nni_tran;
-typedef struct nni_tran_ep   nni_tran_ep;
-typedef struct nni_tran_pipe nni_tran_pipe;
-
-typedef struct nni_proto_sock_ops nni_proto_sock_ops;
-typedef struct nni_proto_pipe_ops nni_proto_pipe_ops;
-typedef struct nni_proto          nni_proto;
+typedef struct nni_socket           nni_sock;
+typedef struct nni_ep               nni_ep;
+typedef struct nni_pipe             nni_pipe;
+typedef struct nni_tran             nni_tran;
+typedef struct nni_tran_ep          nni_tran_ep;
+typedef struct nni_tran_ep_option   nni_tran_ep_option;
+typedef struct nni_tran_pipe        nni_tran_pipe;
+typedef struct nni_tran_pipe_option nni_tran_pipe_option;
+
+typedef struct nni_proto_sock_ops    nni_proto_sock_ops;
+typedef struct nni_proto_pipe_ops    nni_proto_pipe_ops;
+typedef struct nni_proto_sock_option nni_proto_sock_option;
+typedef struct nni_proto             nni_proto;
 
 typedef struct nni_plat_mtx nni_mtx;
 typedef struct nni_plat_cv  nni_cv;