anzeige.c: query dns more often to make entries in bind quasi-permanent (?)

1 files changed, 10 insertions, 0 deletions

diff --git a/anzeige.c b/anzeige.c
index 7e89295..a1ad81f 100644
--- a/anzeige.c
+++ b/anzeige.c
@@ -10,6 +10,7 @@
 #include <pthread.h>
 #include <signal.h>
 #include <time.h>
+#include <netdb.h>
 
 #include "fonts.h"
 #include "input_gadgets.h"
@@ -20,6 +21,7 @@ void handle_signals(int signo);
 
 t_scroll_data scroll_data;
 time_t next_update = 0;
+time_t next_dns_query = 0;
 
 int main(int argc, char **argv)
 {
@@ -80,6 +82,7 @@ int main(int argc, char **argv)
     }
     if ((time(NULL) >= next_update) && (scroll_data . update == 0)) {
       next_update = time(NULL) + 600; // 10 minutes ahead
+      next_dns_query = time(NULL) + 30; // 1/2 minute ahead
 
       memset(text_buffer, 0, TEXT_BUFFER_LENGTH);
 
@@ -148,6 +151,13 @@ int main(int argc, char **argv)
         );
       scroll_data . update = 1;
     }
+    if (time(NULL) >= next_dns_query) {
+      next_dns_query = time(NULL) + 30; // 1/2 minute ahead
+      gethostbyname("wetter.mb.fh-jena.de");
+      gethostbyname("api.met.no");
+      gethostbyname("opendata.dwd.de");
+      gethostbyname("kpi.ddns.eckner.net");
+    }
 
     usleep(100000);
   }