extern char *content_type(const struct parsers *v, const char *s, struct client_state *csp);
extern char *content_length(const struct parsers *v, const char *s, struct client_state *csp);
extern char *content_type(const struct parsers *v, const char *s, struct client_state *csp);
extern char *content_length(const struct parsers *v, const char *s, struct client_state *csp);