Throttle the rate of UDP_INFO messages.

[tinc] / src / protocol_misc.c

diff --git a/src/protocol_misc.c b/src/protocol_misc.c
index 5fde833..d76ab09 100644 (file)
--- a/src/protocol_misc.c
+++ b/src/protocol_misc.c
@@ -31,6 +31,7 @@
 #include "xalloc.h"
 
 int maxoutbufsize = 0;
+int udp_info_interval = 5;
 
 /* Status and error notification routines */
 
@@ -167,8 +168,15 @@ bool send_udp_info(node_t *from, node_t *to) {
        if(!to->status.reachable)
                return true;
 
-       if(from == myself && to->connection)
-               return true;
+       if(from == myself) {
+               if(to->connection)
+                       return true;
+
+               struct timeval elapsed;
+               timersub(&now, &to->udp_info_sent, &elapsed);
+               if(elapsed.tv_sec < udp_info_interval)
+                       return true;
+       }
 
        if((myself->options | from->options | to->options) & OPTION_TCPONLY)
                return true;
@@ -188,6 +196,9 @@ bool send_udp_info(node_t *from, node_t *to) {
        free(from_address);
        free(from_port);
 
+       if(from == myself)
+               to->udp_info_sent = now;
+
        return x;
 }