1 files changed, 1 insertions, 0 deletions
diff --git a/src/nng.h b/src/nng.h
index 8b4c33e8..5c1a2322 100644
--- a/src/nng.h
+++ b/src/nng.h
@@ -423,6 +423,7 @@ NNG_DECL void nng_thread_destroy(void *);
 #define NNG_EMSGSIZE		(17)
 #define NNG_ECONNABORTED	(18)
 #define NNG_ECONNRESET		(19)
+#define NNG_ECANCELED		(20)
 
 // NNG_SYSERR is a special code, which allows us to wrap errors from the
 // underlyuing operating system.  We generally prefer to map errors to one