diff options
| -rw-r--r-- | src/libserver/maps/map.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/libserver/maps/map.c b/src/libserver/maps/map.c index 2226a96d3..e0e714d5a 100644 --- a/src/libserver/maps/map.c +++ b/src/libserver/maps/map.c @@ -317,6 +317,7 @@ rspamd_http_map_process_next_check(struct rspamd_map *map, gboolean has_last_modified) { static const time_t interval_mult = 4; /* Reduced from 16 to be more responsive */ + static const time_t min_respectful_interval = 5; time_t next_check; time_t effective_interval = map_check_interval; @@ -374,6 +375,23 @@ rspamd_http_map_process_next_check(struct rspamd_map *map, return next_check; } +/** + * Calculate respectful polling interval to avoid DoS'ing servers with cache validation + * @param map_check_interval user configured interval + * @return effective interval that respects server resources + */ +static inline time_t +rspamd_map_get_respectful_interval(time_t map_check_interval) +{ + static const time_t min_respectful_interval = 5; /* Minimum 5 seconds to be respectful */ + static const time_t interval_mult = 4; /* Multiplier for respectful minimum */ + + if (map_check_interval < min_respectful_interval) { + return min_respectful_interval * interval_mult; + } + return map_check_interval; +} + static int http_map_finish(struct rspamd_http_connection *conn, struct rspamd_http_message *msg) |