+#ifdef FEATURE_CONNECTION_SHARING
+extern void set_keep_alive_timeout(unsigned int timeout);
+extern void initialize_reusable_connections(void);
+extern void forget_connection(jb_socket sfd);
+extern void remember_connection(const struct reusable_connection *connection);
+extern int close_unusable_connections(void);
+#endif /* FEATURE_CONNECTION_SHARING */