1 files changed, 4 insertions, 0 deletions
diff --git a/src/sub.hpp b/src/sub.hpp
index 0ea1fc4..44fbc9c 100644
--- a/src/sub.hpp
+++ b/src/sub.hpp
@@ -32,6 +32,10 @@ namespace zmq
         sub_t (class ctx_t *parent_, uint32_t tid_);
         ~sub_t ();
 
+    protected:
+
+        int xsetsockopt (int option_, const void *optval_, size_t optvallen_);
+
     private:
 
         sub_t (const sub_t&);