dex: redesign p2p network topology

- Let p2p server support direct connection and group connection.
- Introduce node meta table to maintain IP of all nodes in node set,
  in memory and let nodes in the network can sync this table.
- Let peerSet able to manage direct connections to notary set and dkg set.

The mechanism to refresh the network topology when configuration round
change is not done yet.

1 files changed, 2 insertions, 2 deletions

diff --git a/p2p/discover/table_util_test.go b/p2p/discover/table_util_test.go
index 20238aabc..7e149b22c 100644
--- a/p2p/discover/table_util_test.go
+++ b/p2p/discover/table_util_test.go
@@ -75,10 +75,10 @@ func intIP(i int) net.IP {
 
 // fillBucket inserts nodes into the given bucket until it is full.
 func fillBucket(tab *Table, n *node) (last *node) {
-	ld := enode.LogDist(tab.self().ID(), n.ID())
+	ld := enode.LogDist(tab.Self().ID(), n.ID())
 	b := tab.bucket(n.ID())
 	for len(b.entries) < bucketSize {
-		b.entries = append(b.entries, nodeAtDistance(tab.self().ID(), ld, intIP(ld)))
+		b.entries = append(b.entries, nodeAtDistance(tab.Self().ID(), ld, intIP(ld)))
 	}
 	return b.entries[bucketSize-1]
 }