net: convert standalone IsSelectableSocket() to Sock::IsSelectable()

This makes the callers mockable.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/util/sock.h b/src/util/sock.h
index 9ec53ec91d..ab9c6737c6 100644
--- a/src/util/sock.h
+++ b/src/util/sock.h
@@ -133,6 +133,12 @@ public:
      */
     [[nodiscard]] virtual int GetSockName(sockaddr* name, socklen_t* name_len) const;
 
+    /**
+     * Check if the underlying socket can be used for `select(2)` (or the `Wait()` method).
+     * @return true if selectable
+     */
+    [[nodiscard]] virtual bool IsSelectable() const;
+
     using Event = uint8_t;
 
     /**
@@ -267,8 +273,6 @@ private:
     void Close();
 };
 
-bool IsSelectableSocket(const SOCKET& s);
-
 /** Return readable error string for a network error code */
 std::string NetworkErrorString(int err);