extern int afb_hreq_unprefix(struct afb_hreq *request, const char *prefix, size_t length);
extern int afb_hreq_valid_tail(struct afb_hreq *request);
extern int afb_hreq_unprefix(struct afb_hreq *request, const char *prefix, size_t length);
extern int afb_hreq_valid_tail(struct afb_hreq *request);