diff options
| -rw-r--r-- | networking/isrv.h | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/networking/isrv.h b/networking/isrv.h index 4c7e01d..a42fd41 100644 --- a/networking/isrv.h +++ b/networking/isrv.h @@ -23,7 +23,32 @@ int isrv_register_fd(isrv_state_t *state, int peer, int fd); void isrv_close_fd(isrv_state_t *state, int fd); int isrv_register_peer(isrv_state_t *state, void *param); -/* driver */ +/* Driver: + * + * Select on listen_fd for <linger_timeout> (or forever if 0). + * + * If we time out and we have no peers, exit. + * If we have peers, call do_timeout(peer_param), + * if it returns !0, peer is removed. + * + * If listen_fd is active, accept new connection ("peer"), + * call new_peer() on it, and if it returns 1, + * and add it to fds to select on. + * Now, select will wait for <timeout>, not <linger_timeout> + * (as long as we we have more than zero clients). + * + * If a peer's fd is active, we call do_rd() on it if read + * mask bit was set, + * and then do_wr() if write mask bit was also set. + * If either returns !0, peer is removed. + * Reaching this place also resets timeout counter for this peer. + * + * Note that peer must indicate that he wants to be selected + * for read and/or write using isrv_want_rd()/isrv_want_wr() + * [can be called in new_peer() or in do_rd()/do_wr()]. + * If it never wants to be selected for write, do_wr() + * will never be called (can be NULL). + */ void isrv_run( int listen_fd, int (*new_peer)(isrv_state_t *state, int fd), |