preserve dial to itself

p2p/pex/pex_reactor.go

@@ -8,7 +8,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-
 	amino "github.com/tendermint/go-amino"
 	cmn "github.com/tendermint/tendermint/libs/common"
 	"github.com/tendermint/tendermint/p2p"
@@ -411,6 +410,10 @@ func (r *PEXReactor) ensurePeers() {
 		if r.Switch.IsDialingOrExistingAddress(try) {
 			continue
 		}
+		if r.Switch.NodeInfo().ID() == try.ID {
+			continue // we don't want to dial ourselves, usually.
+		}
+
 		// TODO: consider moving some checks from toDial into here
 		// so we don't even consider dialing peers that we want to wait
 		// before dialling again, or have dialed too many times already