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e83c3ccc47
* p2p/enr: add entries for for IPv4/IPv6 separation This adds entry types for "ip6", "udp6", "tcp6" keys. The IP type stays around because removing it would break a lot of code and force everyone to care about the distinction. * p2p/enode: track IPv4 and IPv6 address separately LocalNode predicts the local node's UDP endpoint and updates the record. This change makes it predict IPv4 and IPv6 endpoints separately since they can now be in the record at the same time. * p2p/enode: implement base64 text format * all: switch to enode.Parse(...) This allows passing base64-encoded node records to all the places that previously accepted enode:// URLs. The URL format is still supported. * cmd/bootnode, p2p: log node URL instead of ENR ...and return the base64 record in NodeInfo.
123 lines
3.7 KiB
Go
123 lines
3.7 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package enode
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import (
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"math/rand"
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"net"
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"testing"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/p2p/enr"
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"github.com/stretchr/testify/assert"
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)
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func newLocalNodeForTesting() (*LocalNode, *DB) {
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db, _ := OpenDB("")
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key, _ := crypto.GenerateKey()
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return NewLocalNode(db, key), db
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}
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func TestLocalNode(t *testing.T) {
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ln, db := newLocalNodeForTesting()
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defer db.Close()
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if ln.Node().ID() != ln.ID() {
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t.Fatal("inconsistent ID")
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}
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ln.Set(enr.WithEntry("x", uint(3)))
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var x uint
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if err := ln.Node().Load(enr.WithEntry("x", &x)); err != nil {
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t.Fatal("can't load entry 'x':", err)
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} else if x != 3 {
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t.Fatal("wrong value for entry 'x':", x)
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}
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}
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func TestLocalNodeSeqPersist(t *testing.T) {
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ln, db := newLocalNodeForTesting()
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defer db.Close()
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if s := ln.Node().Seq(); s != 1 {
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t.Fatalf("wrong initial seq %d, want 1", s)
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}
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ln.Set(enr.WithEntry("x", uint(1)))
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if s := ln.Node().Seq(); s != 2 {
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t.Fatalf("wrong seq %d after set, want 2", s)
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}
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// Create a new instance, it should reload the sequence number.
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// The number increases just after that because a new record is
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// created without the "x" entry.
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ln2 := NewLocalNode(db, ln.key)
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if s := ln2.Node().Seq(); s != 3 {
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t.Fatalf("wrong seq %d on new instance, want 3", s)
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}
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// Create a new instance with a different node key on the same database.
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// This should reset the sequence number.
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key, _ := crypto.GenerateKey()
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ln3 := NewLocalNode(db, key)
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if s := ln3.Node().Seq(); s != 1 {
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t.Fatalf("wrong seq %d on instance with changed key, want 1", s)
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}
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}
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// This test checks behavior of the endpoint predictor.
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func TestLocalNodeEndpoint(t *testing.T) {
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var (
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fallback = &net.UDPAddr{IP: net.IP{127, 0, 0, 1}, Port: 80}
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predicted = &net.UDPAddr{IP: net.IP{127, 0, 1, 2}, Port: 81}
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staticIP = net.IP{127, 0, 1, 2}
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)
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ln, db := newLocalNodeForTesting()
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defer db.Close()
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// Nothing is set initially.
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assert.Equal(t, net.IP(nil), ln.Node().IP())
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assert.Equal(t, 0, ln.Node().UDP())
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assert.Equal(t, uint64(1), ln.Node().Seq())
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// Set up fallback address.
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ln.SetFallbackIP(fallback.IP)
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ln.SetFallbackUDP(fallback.Port)
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assert.Equal(t, fallback.IP, ln.Node().IP())
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assert.Equal(t, fallback.Port, ln.Node().UDP())
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assert.Equal(t, uint64(2), ln.Node().Seq())
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// Add endpoint statements from random hosts.
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for i := 0; i < iptrackMinStatements; i++ {
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assert.Equal(t, fallback.IP, ln.Node().IP())
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assert.Equal(t, fallback.Port, ln.Node().UDP())
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assert.Equal(t, uint64(2), ln.Node().Seq())
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from := &net.UDPAddr{IP: make(net.IP, 4), Port: 90}
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rand.Read(from.IP)
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ln.UDPEndpointStatement(from, predicted)
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}
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assert.Equal(t, predicted.IP, ln.Node().IP())
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assert.Equal(t, predicted.Port, ln.Node().UDP())
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assert.Equal(t, uint64(3), ln.Node().Seq())
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// Static IP overrides prediction.
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ln.SetStaticIP(staticIP)
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assert.Equal(t, staticIP, ln.Node().IP())
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assert.Equal(t, fallback.Port, ln.Node().UDP())
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assert.Equal(t, uint64(4), ln.Node().Seq())
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}
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