* `client_x_forwarded_adder', `client_xtra_adder',
* `content_type', `crumble', `destroy_list', `enlist',
* `flush_socket', `free_http_request', `get_header',
* `client_x_forwarded_adder', `client_xtra_adder',
* `content_type', `crumble', `destroy_list', `enlist',
* `flush_socket', `free_http_request', `get_header',
#define FILTER_SERVER_HEADERS 1
extern long flush_iob(jb_socket fd, struct iob *iob, unsigned int delay);
#define FILTER_SERVER_HEADERS 1
extern long flush_iob(jb_socket fd, struct iob *iob, unsigned int delay);
-extern jb_err add_to_iob(struct iob *iob, const size_t buffer_limit, char *src, long n);
+extern int can_add_to_iob(const struct iob *iob, const size_t buffer_limit, size_t n);
+extern jb_err add_to_iob(struct iob *iob, const size_t buffer_limit, const char *src, long n);
extern void clear_iob(struct iob *iob);
extern jb_err decompress_iob(struct client_state *csp);
extern char *get_header(struct iob *iob);
extern void clear_iob(struct iob *iob);
extern jb_err decompress_iob(struct client_state *csp);
extern char *get_header(struct iob *iob);
extern jb_err update_server_headers(struct client_state *csp);
extern void get_http_time(int time_offset, char *buf, size_t buffer_size);
extern jb_err get_destination_from_headers(const struct list *headers, struct http_request *http);
extern jb_err update_server_headers(struct client_state *csp);
extern void get_http_time(int time_offset, char *buf, size_t buffer_size);
extern jb_err get_destination_from_headers(const struct list *headers, struct http_request *http);