dex: remove node table (#330)

* dex: remove node table
Node table is not so useful, go back to rely on kademlia
* p2p: fix direct dial still have resolve delay

1 files changed, 0 insertions, 121 deletions

diff --git a/dex/nodetable_test.go b/dex/nodetable_test.go
deleted file mode 100644
index 06078a0d8..000000000
--- a/dex/nodetable_test.go
+++ /dev/null
@@ -1,121 +0,0 @@
-package dex
-
-import (
-	"crypto/ecdsa"
-	"net"
-	"testing"
-	"time"
-
-	"github.com/dexon-foundation/dexon/common"
-	"github.com/dexon-foundation/dexon/crypto"
-	"github.com/dexon-foundation/dexon/p2p/enode"
-	"github.com/dexon-foundation/dexon/p2p/enr"
-)
-
-func TestNodeTable(t *testing.T) {
-	table := newNodeTable()
-	ch := make(chan newRecordsEvent)
-	table.SubscribeNewRecordsEvent(ch)
-
-	records1 := []*enr.Record{
-		randomNode().Record(),
-		randomNode().Record(),
-	}
-
-	records2 := []*enr.Record{
-		randomNode().Record(),
-		randomNode().Record(),
-	}
-
-	go table.AddRecords(records1)
-
-	select {
-	case newRecords := <-ch:
-		m := map[common.Hash]struct{}{}
-		for _, record := range newRecords.Records {
-			m[rlpHash(record)] = struct{}{}
-		}
-
-		if len(m) != len(records1) {
-			t.Errorf("len mismatch: got %d, want: %d",
-				len(m), len(records1))
-		}
-
-		for _, record := range records1 {
-			if _, ok := m[rlpHash(record)]; !ok {
-				t.Errorf("expected record (%s) not exists", rlpHash(record))
-			}
-		}
-	case <-time.After(1 * time.Second):
-		t.Error("did not receive new records event within one second")
-	}
-
-	go table.AddRecords(records2)
-	select {
-	case newRecords := <-ch:
-		m := map[common.Hash]struct{}{}
-		for _, record := range newRecords.Records {
-			m[rlpHash(record)] = struct{}{}
-		}
-
-		if len(m) != len(records2) {
-			t.Errorf("len mismatch: got %d, want: %d",
-				len(m), len(records2))
-		}
-
-		for _, record := range records2 {
-			if _, ok := m[rlpHash(record)]; !ok {
-				t.Errorf("expected record (%s) not exists", rlpHash(record))
-			}
-		}
-	case <-time.After(1 * time.Second):
-		t.Error("did not receive new records event within one second")
-	}
-
-	var records []*enr.Record
-	records = append(records, records1...)
-	records = append(records, records2...)
-	allRecords := table.Records()
-	if len(allRecords) != len(records) {
-		t.Errorf("all metas num mismatch: got %d, want %d",
-			len(records), len(allRecords))
-	}
-
-	for _, r := range records {
-		n, err := enode.New(enode.V4ID{}, r)
-		if err != nil {
-			t.Errorf(err.Error())
-		}
-		if rlpHash(r) != rlpHash(table.GetNode(n.ID()).Record()) {
-			t.Errorf("record (%s) mismatch", n.ID().String())
-		}
-	}
-}
-
-func randomNode() *enode.Node {
-	var err error
-	var privkey *ecdsa.PrivateKey
-	for {
-		privkey, err = crypto.GenerateKey()
-		if err == nil {
-			break
-		}
-	}
-	var r enr.Record
-	r.Set(enr.IP(net.IP{}))
-	r.Set(enr.UDP(0))
-	r.Set(enr.TCP(0))
-	if err := enode.SignV4(&r, privkey); err != nil {
-		panic(err)
-	}
-	node, err := enode.New(enode.V4ID{}, &r)
-	if err != nil {
-		panic(err)
-
-	}
-	return node
-}
-
-func randomID() enode.ID {
-	return randomNode().ID()
-}