Make LocalDiscovery work for SPTPS packets.

diff --git a/src/net_packet.c b/src/net_packet.c
index 1159231..012085e 100644 (file)
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -143,16 +143,15 @@ static void send_mtu_probe_handler(void *data) {
                memset(packet.data, 0, 14);
                randomize(packet.data + 14, len - 14);
                packet.len = len;
-               if(i >= 4 && n->mtuprobes <= 10)
-                       packet.priority = -1;
-               else
-                       packet.priority = 0;
+               packet.priority = 0;
+               n->status.broadcast = i >= 4 && n->mtuprobes <= 10 && n->prevedge;
 
                logger(DEBUG_TRAFFIC, LOG_INFO, "Sending MTU probe length %d to %s (%s)", len, n->name, n->hostname);
 
                send_udppacket(n, &packet);
        }
 
+       n->status.broadcast = false;
        n->probe_counter = 0;
        gettimeofday(&n->probe_time, NULL);
 
@@ -734,9 +733,7 @@ static void send_udppacket(node_t *n, vpn_packet_t *origpkt) {
        const sockaddr_t *sa;
        int sock;
 
-       /* Overloaded use of priority field: -1 means local broadcast */
-
-       if(origpriority == -1 && n->prevedge)
+       if(n->status.broadcast)
                choose_broadcast_address(n, &sa, &sock);
        else
                choose_udp_address(n, &sa, &sock);
@@ -788,7 +785,10 @@ bool send_sptps_data(void *handle, uint8_t type, const char *data, size_t len) {
        const sockaddr_t *sa;
        int sock;
 
-       choose_udp_address(to, &sa, &sock);
+       if(to->status.broadcast)
+               choose_broadcast_address(to, &sa, &sock);
+       else
+               choose_udp_address(to, &sa, &sock);
 
        if(sendto(listen_socket[sock].udp.fd, data, len, 0, &sa->sa, SALEN(sa->sa)) < 0 && !sockwouldblock(sockerrno)) {
                if(sockmsgsize(sockerrno)) {

diff --git a/src/node.h b/src/node.h
index e704ba8..1c9f230 100644 (file)
--- a/src/node.h
+++ b/src/node.h
@@ -37,7 +37,8 @@ typedef struct node_status_t {
        unsigned int indirect:1;                /* 1 if this node is not directly reachable by us */
        unsigned int sptps:1;                   /* 1 if this node supports SPTPS */
        unsigned int udp_confirmed:1;           /* 1 if the address is one that we received UDP traffic on */
-       unsigned int unused:24;
+       unsigned int broadcast:1;               /* 1 if the next UDP packet should be broadcast to the local network */
+       unsigned int unused:23;
 } node_status_t;
 
 typedef struct node_t {