Machinery for blocking http requests in place, except actual networking

luprex/core/cpp/eng-malloc.hpp

@@ -142,6 +142,9 @@ namespace eng {
 
 // eng::nevernew.  A class containing private operator new and
 // operator delete, making it impossible to 'new' the class.
+// This means the class must be embedded as a field in some other
+// class, and it gets allocated when its enclosing object gets
+// allocated.
 namespace eng {
     class nevernew {
     private: