+extern int afb_hreq_init_context(struct afb_hreq *hreq);
+
+extern int afb_hreq_init_cookie(int port, const char *path, int maxage);
+
+extern void afb_hreq_reply_static(struct afb_hreq *hreq, unsigned status, size_t size, const char *buffer, ...);
+
+extern void afb_hreq_reply_copy(struct afb_hreq *hreq, unsigned status, size_t size, const char *buffer, ...);
+
+extern void afb_hreq_reply_free(struct afb_hreq *hreq, unsigned status, size_t size, char *buffer, ...);
+
+extern void afb_hreq_reply_empty(struct afb_hreq *hreq, unsigned status, ...);