1 files changed, 17 insertions, 0 deletions
diff --git a/src/netbase.h b/src/netbase.h
index b225f128e7..751f7eb3f0 100644
--- a/src/netbase.h
+++ b/src/netbase.h
@@ -18,6 +18,7 @@
 #include <memory>
 #include <stdint.h>
 #include <string>
+#include <type_traits>
 #include <vector>
 
 extern int nConnectTimeout;
@@ -28,6 +29,22 @@ static const int DEFAULT_CONNECT_TIMEOUT = 5000;
 //! -dns default
 static const int DEFAULT_NAME_LOOKUP = true;
 
+enum class ConnectionDirection {
+    None = 0,
+    In = (1U << 0),
+    Out = (1U << 1),
+    Both = (In | Out),
+};
+static inline ConnectionDirection& operator|=(ConnectionDirection& a, ConnectionDirection b) {
+    using underlying = typename std::underlying_type<ConnectionDirection>::type;
+    a = ConnectionDirection(underlying(a) | underlying(b));
+    return a;
+}
+static inline bool operator&(ConnectionDirection a, ConnectionDirection b) {
+    using underlying = typename std::underlying_type<ConnectionDirection>::type;
+    return (underlying(a) & underlying(b));
+}
+
 class proxyType
 {
 public: