+#ifdef FEATURE_CONNECTION_KEEP_ALIVE
+
+/*
+ * Default number of seconds after which an
+ * open connection will no longer be reused.
+ */
+#define DEFAULT_KEEP_ALIVE_TIMEOUT 180
+
+extern void set_keep_alive_timeout(int timeout);
+extern void initialize_reusable_connections(void);
+extern void forget_connection(jb_socket sfd);
+extern void remember_connection(jb_socket sfd,
+ const struct http_request *http,
+ const struct forward_spec *fwd);
+extern int close_unusable_connections(void);
+#endif /* FEATURE_CONNECTION_KEEP_ALIVE */
+