1 files changed, 4 insertions, 0 deletions
diff --git a/src/nng.h b/src/nng.h
index 92c2f396..f45c5bff 100644
--- a/src/nng.h
+++ b/src/nng.h
@@ -583,6 +583,10 @@ enum nng_flag_enum {
 // Options.
 #define NNG_OPT_SOCKNAME "socket-name"
 #define NNG_OPT_RAW "raw"
+#define NNG_OPT_PROTO "protocol"
+#define NNG_OPT_PROTONAME "protocol-name"
+#define NNG_OPT_PEER "peer"
+#define NNG_OPT_PEERNAME "peer-name"
 #define NNG_OPT_RECVBUF "recv-buffer"
 #define NNG_OPT_SENDBUF "send-buffer"
 #define NNG_OPT_RECVFD "recv-fd"