Add a cache of recently seen addresses.

[tinc] / src / net_packet.c

diff --git a/src/net_packet.c b/src/net_packet.c
index 2175180..7bd619f 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -30,6 +30,7 @@
 #include LZO1X_H
 #endif
 
+#include "address_cache.h"
 #include "cipher.h"
 #include "conf.h"
 #include "connection.h"
@@ -153,7 +154,13 @@ static void udp_probe_h(node_t *n, vpn_packet_t *packet, length_t len) {
        /* It's a valid reply: now we know bidirectional communication
           is possible using the address and socket that the reply
           packet used. */
-       n->status.udp_confirmed = true;
+       if(!n->status.udp_confirmed) {
+               n->status.udp_confirmed = true;
+               fprintf(stderr, "Updating address cache...\n");
+               if (!n->address_cache)
+                       n->address_cache = open_address_cache(n);
+               reset_address_cache(n->address_cache, &n->address);
+       }
 
        // Reset the UDP ping timer.
        n->udp_ping_sent = now;