Define new NNG_ESTATE for dealing with protocol state errors.

This error code is set when a cooked mode protocol cannot support
an operation yet.  For example, it makes no sense to recv() a
reply on a REQ socket if no request has been sent yet.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/nng.c b/src/nng.c
index 49671935..7c6c403f 100644
--- a/src/nng.c
+++ b/src/nng.c
@@ -166,6 +166,9 @@ nng_strerror(int num)
 	case NNG_EADDRINUSE:
 		return ("Address in use");
 
+	case NNG_ESTATE:
+		return ("Incorrect state");
+
 	default:
 		return ("Unknown error");
 	}