| 411 | } |
| 412 | |
| 413 | int go_back_two_req(reader_t *const reader) { |
| 414 | /* go back two requests |
| 415 | return 0 on successful, non-zero otherwise |
| 416 | */ |
| 417 | if (go_back_one_req(reader) == 0) { |
| 418 | return go_back_one_req(reader); |
| 419 | } else { |
| 420 | return 1; |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * read one request from reader precede current position, |