Recommit parts of "Minor fixes in MDNS code to make sure it does work after the recent loop tightening."

Author: wtoorop

src/context.c

@@ -3569,10 +3569,12 @@ _get_context_settings(getdns_context* context)
 		return NULL;
 
 	/* int fields */
+	/* the timeouts are stored as uint64, but the value maximum used in
+	   practice is 6553500ms, so we just trim the value to be on the safe side. */
 	if (   getdns_dict_set_int(result, "timeout",
-	                           context->timeout)
+	                           (context->timeout > 0xFFFFFFFFull) ? 0xFFFFFFFF: (uint32_t) context->timeout)
 	    || getdns_dict_set_int(result, "idle_timeout",
-	                           context->idle_timeout)
+	                           (context->idle_timeout > 0xFFFFFFFFull) ? 0xFFFFFFFF : (uint32_t) context->idle_timeout)
 	    || getdns_dict_set_int(result, "limit_outstanding_queries",
 	                           context->limit_outstanding_queries)
             || getdns_dict_set_int(result, "dnssec_allowed_skew",

src/util-internal.c

@@ -862,7 +862,7 @@ _getdns_create_call_reporting_dict(
 				return NULL;
 			}
 		} else{
-			uint32_t idle_timeout = netreq->upstream->keepalive_timeout;
+			uint32_t idle_timeout = (uint32_t) netreq->upstream->keepalive_timeout;
 			if (getdns_dict_set_int( netreq_debug, "idle timeout in ms", idle_timeout)) {
 				getdns_dict_destroy(netreq_debug);
 				return NULL;