limit master requests using masterupdatefrequency

git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@2786 e016b1c5-ed68-44aa-a2f7-31cac88cffde

source/src/serverbrowser.cpp

@@ -531,8 +531,13 @@ void clearservers()
     servers.deletecontentsp();
 }
 
+VARP(masterupdatefrequency, 1, 60*60, 24*60*60);
+
 void updatefrommaster()
 {
+    static int lastupdate = 0;
+    if(lastupdate && lastmillis-lastupdate<masterupdatefrequency*1000) return;
+
     uchar buf[32000];
     uchar *reply = retrieveservers(buf, sizeof(buf));
     if(!*reply || strstr((char *)reply, "<html>") || strstr((char *)reply, "<HTML>")) conoutf("master server not replying");
@@ -551,6 +556,7 @@ void updatefrommaster()
         execute((char *)reply);
 
         if(curserver) addserver(curname, curport);
+        lastupdate = lastmillis;
     }
 }