Fix: Source, header and config file disagreed about which mcast group to join.

2 files changed, 6 insertions, 3 deletions

diff --git a/opentracker.conf.sample b/opentracker.conf.sample
index 491c88a..3cd30dc 100644
--- a/opentracker.conf.sample
+++ b/opentracker.conf.sample
@@ -138,9 +138,11 @@
 # livesync.cluster.listen 192.168.0.1:9696
 #
 #      Note that two udp sockets will be opened. One on ip address 0.0.0.0
-#      port 9696, that will join the multicast group 224.0.42.23 for incoming
+#      port 9696, that will join the multicast group 224.0.23.5 for incoming
 #      udp packets and one on ip address 192.168.0.1 port 9696 for outgoing
-#      udp packets.
+#      udp packets. The group is the same for every opentracker, so a cluster
+#      is kept to itself by the node_ip list below and by the ttl of 1 that
+#      keeps packets on the local link.
 #
 #      As of now one and only one ip address must be given, if opentracker
 #      was built with the WANT_SYNC_LIVE feature.
diff --git a/src/ot_livesync.h b/src/ot_livesync.h
index 4bd3af0..d8d20b3 100644
--- a/src/ot_livesync.h
+++ b/src/ot_livesync.h
@@ -7,7 +7,8 @@
 #include "trackerlogic.h"
 
 /*
-  Syncing is done as udp packets in the multicast domain 224.0.42.5 port 9696
+  Syncing is done as udp packets in the multicast group 224.0.23.5, on the
+  port livesync.cluster.listen names, 9696 by default
 
   Each tracker should join the multicast group and send its live sync packets
   to that group, using a ttl of 1