458 lines
16 KiB
Go
458 lines
16 KiB
Go
package peers
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import (
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"net"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/discv5"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/t/helpers"
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"github.com/status-im/whisper/whisperv6"
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"github.com/stretchr/testify/require"
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"github.com/stretchr/testify/suite"
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)
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type TopicPoolSuite struct {
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suite.Suite
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peer *p2p.Server
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topicPool *TopicPool
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}
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func TestTopicPoolSuite(t *testing.T) {
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suite.Run(t, new(TopicPoolSuite))
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}
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func (s *TopicPoolSuite) createDiscV5Node(ip net.IP, port uint16) (enode.ID, *discv5.Node) {
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id, err := crypto.GenerateKey()
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s.Require().NoError(err)
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nodeID := enode.PubkeyToIDV4(&id.PublicKey)
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nodeV5 := discv5.NewNode(discv5.PubkeyID(&id.PublicKey), ip, port, port)
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return nodeID, nodeV5
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}
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func (s *TopicPoolSuite) SetupTest() {
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maxCachedPeersMultiplier = 1
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key, _ := crypto.GenerateKey()
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name := common.MakeName("peer", "1.0")
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s.peer = &p2p.Server{
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Config: p2p.Config{
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MaxPeers: 10,
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Name: name,
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ListenAddr: "0.0.0.0:0",
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PrivateKey: key,
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NoDiscovery: true,
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},
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}
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s.Require().NoError(s.peer.Start())
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topic := discv5.Topic("cap=cap1")
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limits := params.NewLimits(1, 2)
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cache, err := newInMemoryCache()
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s.Require().NoError(err)
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s.topicPool = newTopicPool(nil, topic, limits, 100*time.Millisecond, 200*time.Millisecond, cache)
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s.topicPool.running = 1
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// This is a buffered channel to simplify testing.
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// If your test generates more than 10 mode changes,
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// override this `period` field or consume from it
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// using `AssertConsumed()`.
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s.topicPool.period = make(chan time.Duration, 10)
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}
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func (s *TopicPoolSuite) TearDown() {
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s.peer.Stop()
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}
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func (s *TopicPoolSuite) AssertConsumed(channel <-chan time.Duration, expected time.Duration, timeout time.Duration) {
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select {
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case received := <-channel:
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s.Equal(expected, received)
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case <-time.After(timeout):
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s.FailNow("timed out waiting")
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}
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}
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func (s *TopicPoolSuite) TestUsingCache() {
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s.topicPool.limits = params.NewLimits(1, 1)
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s.topicPool.maxCachedPeers = 1
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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nodeID2, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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cached := s.topicPool.cache.GetPeersRange(s.topicPool.topic, 10)
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s.Contains(cached, peer1)
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s.Contains(cached, peer2)
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s.topicPool.ConfirmDropped(s.peer, nodeID2)
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cached = s.topicPool.cache.GetPeersRange(s.topicPool.topic, 10)
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s.Contains(cached, peer1)
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s.Contains(cached, peer2)
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// A peer that drops by itself, should be removed from the cache.
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s.topicPool.ConfirmDropped(s.peer, nodeID1)
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s.Equal([]*discv5.Node{peer2}, s.topicPool.cache.GetPeersRange(s.topicPool.topic, 10))
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}
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func (s *TopicPoolSuite) TestSyncSwitches() {
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nodeID, peer := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer))
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s.topicPool.ConfirmAdded(s.peer, nodeID)
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s.AssertConsumed(s.topicPool.period, s.topicPool.slowMode, time.Second)
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s.NotNil(s.topicPool.connectedPeers[nodeID])
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s.topicPool.ConfirmDropped(s.peer, nodeID)
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s.AssertConsumed(s.topicPool.period, s.topicPool.fastMode, time.Second)
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}
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func (s *TopicPoolSuite) TestTimeoutFastMode() {
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s.topicPool.fastModeTimeout = time.Millisecond * 50
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// set fast mode
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s.topicPool.mu.Lock()
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s.topicPool.setSyncMode(s.topicPool.fastMode)
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s.topicPool.mu.Unlock()
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s.Equal(s.topicPool.fastMode, <-s.topicPool.period)
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// switch to slow mode after `fastModeTimeout`
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select {
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case mode := <-s.topicPool.period:
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s.Equal(s.topicPool.slowMode, mode)
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case <-time.After(s.topicPool.fastModeTimeout * 2):
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s.FailNow("timed out")
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}
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}
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func (s *TopicPoolSuite) TestSetSyncMode() {
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s.topicPool.fastModeTimeout = 0
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// set fast mode
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s.topicPool.setSyncMode(s.topicPool.fastMode)
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s.Equal(s.topicPool.fastMode, <-s.topicPool.period)
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s.Equal(s.topicPool.fastMode, s.topicPool.currentMode)
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// skip setting the same mode
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s.topicPool.setSyncMode(s.topicPool.fastMode)
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select {
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case <-s.topicPool.period:
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s.FailNow("should not have update the mode")
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default:
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// pass
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}
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// switch to slow mode
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cancel := make(chan struct{})
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s.topicPool.fastModeTimeoutCancel = cancel // should be set to nil
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s.topicPool.setSyncMode(s.topicPool.slowMode)
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s.Equal(s.topicPool.slowMode, <-s.topicPool.period)
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s.Equal(s.topicPool.slowMode, s.topicPool.currentMode)
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select {
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case <-cancel:
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s.Nil(s.topicPool.fastModeTimeoutCancel)
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default:
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s.FailNow("cancel should be closed")
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}
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}
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func (s *TopicPoolSuite) TestNewPeerSelectedOnDrop() {
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID2, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID3, peer3 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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// add 3 nodes and confirm connection for 1 and 2
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer3))
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s.Len(s.topicPool.pendingPeers, 3)
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s.Len(s.topicPool.discoveredPeersQueue, 0)
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.Contains(s.topicPool.connectedPeers, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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s.Contains(s.topicPool.connectedPeers, nodeID2)
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s.topicPool.ConfirmAdded(s.peer, nodeID3)
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s.topicPool.ConfirmDropped(s.peer, nodeID3)
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s.Contains(s.topicPool.pendingPeers, nodeID3)
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s.Len(s.topicPool.pendingPeers, 1)
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s.Len(s.topicPool.discoveredPeersQueue, 1)
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// drop peer1
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s.True(s.topicPool.ConfirmDropped(s.peer, nodeID1))
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s.NotContains(s.topicPool.connectedPeers, nodeID1)
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// add peer from the pool
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s.Equal(peer3.ID, s.topicPool.AddPeerFromTable(s.peer).ID)
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s.Len(s.topicPool.pendingPeers, 1)
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s.Len(s.topicPool.discoveredPeersQueue, 0)
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}
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func (s *TopicPoolSuite) TestRequestedDoesntRemove() {
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// max limit is 1 because we test that 2nd peer will stay in local table
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// when we request to drop it
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s.topicPool.limits = params.NewLimits(1, 1)
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s.topicPool.maxCachedPeers = 1
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID2, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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s.False(s.topicPool.connectedPeers[nodeID1].dismissed)
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s.True(s.topicPool.connectedPeers[nodeID2].dismissed)
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s.topicPool.ConfirmDropped(s.peer, nodeID2)
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s.Contains(s.topicPool.pendingPeers, nodeID2)
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s.NotContains(s.topicPool.connectedPeers, nodeID2)
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s.topicPool.ConfirmDropped(s.peer, nodeID1)
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s.NotContains(s.topicPool.pendingPeers, nodeID1)
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s.NotContains(s.topicPool.connectedPeers, nodeID1)
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}
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func (s *TopicPoolSuite) TestTheMostRecentPeerIsSelected() {
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s.topicPool.limits = params.NewLimits(1, 1)
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s.topicPool.maxCachedPeers = 1
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID2, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID3, peer3 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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// after these operations, peer1 is confirmed and peer3 and peer2
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// was added to the pool; peer3 is the most recent one
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer3))
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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s.topicPool.ConfirmAdded(s.peer, nodeID3)
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s.topicPool.ConfirmDropped(s.peer, nodeID2)
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s.topicPool.ConfirmDropped(s.peer, nodeID3)
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// peer1 has dropped
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s.topicPool.ConfirmDropped(s.peer, nodeID1)
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// and peer3 is take from the pool as the most recent
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s.True(s.topicPool.pendingPeers[nodeID2].discoveredTime < s.topicPool.pendingPeers[nodeID3].discoveredTime)
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s.Equal(peer3.ID, s.topicPool.AddPeerFromTable(s.peer).ID)
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}
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func (s *TopicPoolSuite) TestSelectPeerAfterMaxLimit() {
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s.topicPool.limits = params.NewLimits(1, 1)
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s.topicPool.maxCachedPeers = 1
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID2, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID3, peer3 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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s.topicPool.ConfirmDropped(s.peer, nodeID2)
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s.Len(s.topicPool.pendingPeers, 1)
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s.Contains(s.topicPool.pendingPeers, nodeID2)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer3))
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s.Len(s.topicPool.pendingPeers, 2)
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s.Contains(s.topicPool.pendingPeers, nodeID3)
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s.Equal(peer3, s.topicPool.AddPeerFromTable(s.peer))
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}
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func (s *TopicPoolSuite) TestReplacementPeerIsCounted() {
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s.topicPool.limits = params.NewLimits(1, 1)
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s.topicPool.maxCachedPeers = 1
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID2, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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s.topicPool.ConfirmDropped(s.peer, nodeID2)
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s.topicPool.ConfirmDropped(s.peer, nodeID1)
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s.NotContains(s.topicPool.pendingPeers, nodeID1)
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s.NotContains(s.topicPool.connectedPeers, nodeID1)
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s.Contains(s.topicPool.pendingPeers, nodeID2)
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s.topicPool.pendingPeers[nodeID2].added = true
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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s.True(s.topicPool.MaxReached())
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}
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func (s *TopicPoolSuite) TestPeerDontAddTwice() {
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s.topicPool.limits = params.NewLimits(1, 1)
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s.topicPool.maxCachedPeers = 1
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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_, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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// peer2 already added to p2p server no reason to add it again
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s.Nil(s.topicPool.AddPeerFromTable(s.peer))
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}
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func (s *TopicPoolSuite) TestMaxCachedPeers() {
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s.topicPool.limits = params.NewLimits(1, 1)
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s.topicPool.maxCachedPeers = 3
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID2, peer2 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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nodeID3, peer3 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer2))
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer3))
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID2)
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s.topicPool.ConfirmAdded(s.peer, nodeID3)
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s.Equal(3, len(s.topicPool.connectedPeers))
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s.False(s.topicPool.connectedPeers[nodeID1].dismissed)
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s.True(s.topicPool.connectedPeers[nodeID2].dismissed)
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s.True(s.topicPool.connectedPeers[nodeID3].dismissed)
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cached := s.topicPool.cache.GetPeersRange(s.topicPool.topic, 5)
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s.Equal(3, len(cached))
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cachedMap := make(map[discv5.NodeID]*discv5.Node)
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for _, peer := range cached {
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cachedMap[peer.ID] = peer
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}
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s.topicPool.ConfirmDropped(s.peer, nodeID2)
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s.topicPool.ConfirmDropped(s.peer, nodeID3)
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s.Contains(cachedMap, peer1.ID)
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s.Contains(cachedMap, peer2.ID)
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s.Contains(cachedMap, peer3.ID)
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s.Contains(s.topicPool.connectedPeers, nodeID1)
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s.NotContains(s.topicPool.connectedPeers, nodeID2)
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s.NotContains(s.topicPool.connectedPeers, nodeID3)
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s.NotContains(s.topicPool.pendingPeers, nodeID1)
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s.Contains(s.topicPool.pendingPeers, nodeID2)
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s.Contains(s.topicPool.pendingPeers, nodeID3)
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s.True(s.topicPool.maxCachedPeersReached())
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cached = s.topicPool.cache.GetPeersRange(s.topicPool.topic, 5)
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s.Equal(3, len(cached))
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}
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func (s *TopicPoolSuite) TestNewTopicPoolInterface() {
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limits := params.NewLimits(1, 2)
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cache, err := newInMemoryCache()
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s.Require().NoError(err)
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topic := discv5.Topic("cap=cap1")
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t := newTopicPool(nil, topic, limits, 100*time.Millisecond, 200*time.Millisecond, cache)
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s.IsType(&TopicPool{}, t)
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tp := newTopicPool(nil, MailServerDiscoveryTopic, limits, 100*time.Millisecond, 200*time.Millisecond, cache)
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cacheTP := newCacheOnlyTopicPool(tp, &testTrueVerifier{})
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s.IsType(&cacheOnlyTopicPool{}, cacheTP)
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}
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func (s *TopicPoolSuite) TestIgnoreInboundConnection() {
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s.topicPool.limits = params.NewLimits(0, 0)
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s.topicPool.maxCachedPeers = 0
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Contains(s.topicPool.pendingPeers, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.Contains(s.topicPool.pendingPeers, nodeID1)
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s.False(s.topicPool.pendingPeers[nodeID1].dismissed)
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s.NotContains(s.topicPool.connectedPeers, nodeID1)
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}
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func (s *TopicPoolSuite) TestConnectedButRemoved() {
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s.topicPool.limits = params.NewLimits(0, 0)
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s.topicPool.maxCachedPeers = 1
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nodeID1, peer1 := s.createDiscV5Node(s.peer.Self().IP(), 32311)
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s.Require().NoError(s.topicPool.processFoundNode(s.peer, peer1))
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s.Contains(s.topicPool.pendingPeers, nodeID1)
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s.topicPool.ConfirmAdded(s.peer, nodeID1)
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s.Contains(s.topicPool.connectedPeers, nodeID1)
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s.False(s.topicPool.ConfirmDropped(s.peer, nodeID1))
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s.False(s.topicPool.pendingPeers[nodeID1].added)
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}
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func TestServerIgnoresInboundPeer(t *testing.T) {
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topic := discv5.Topic("cap=cap1")
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limits := params.NewLimits(0, 0)
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cache, err := newInMemoryCache()
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require.NoError(t, err)
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topicPool := newTopicPool(nil, topic, limits, 100*time.Millisecond, 200*time.Millisecond, cache)
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topicPool.running = 1
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topicPool.maxCachedPeers = 0
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whisper := whisperv6.New(nil)
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srvkey, err := crypto.GenerateKey()
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require.NoError(t, err)
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server := &p2p.Server{
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Config: p2p.Config{
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MaxPeers: 1,
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Name: "server",
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ListenAddr: ":0",
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PrivateKey: srvkey,
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NoDiscovery: true,
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Protocols: whisper.Protocols(),
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},
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}
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require.NoError(t, server.Start())
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clientkey, err := crypto.GenerateKey()
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require.NoError(t, err)
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client := &p2p.Server{
|
|
Config: p2p.Config{
|
|
MaxPeers: 1,
|
|
Name: "client",
|
|
ListenAddr: ":0",
|
|
PrivateKey: clientkey,
|
|
NoDiscovery: true,
|
|
Protocols: whisper.Protocols(),
|
|
},
|
|
}
|
|
require.NoError(t, client.Start())
|
|
|
|
// add peer to topic pool, as if it was discovered.
|
|
// it will be ignored due to the limit and added to a table of pending peers.
|
|
clientID := enode.PubkeyToIDV4(&clientkey.PublicKey)
|
|
clientNodeV5 := discv5.NewNode(
|
|
discv5.PubkeyID(&clientkey.PublicKey),
|
|
client.Self().IP(),
|
|
uint16(client.Self().UDP()),
|
|
uint16(client.Self().TCP()),
|
|
)
|
|
require.NoError(t, topicPool.processFoundNode(server, clientNodeV5))
|
|
require.Contains(t, topicPool.pendingPeers, clientID)
|
|
require.False(t, topicPool.pendingPeers[clientID].added)
|
|
|
|
errch := helpers.WaitForPeerAsync(server, client.Self().URLv4(), p2p.PeerEventTypeAdd, 5*time.Second)
|
|
// connect to a server from client. client will be an inbound connection for a server.
|
|
client.AddPeer(server.Self())
|
|
select {
|
|
case err := <-errch:
|
|
require.NoError(t, err)
|
|
case <-time.After(10 * time.Second):
|
|
require.FailNow(t, "failed waiting for WaitPeerAsync")
|
|
}
|
|
|
|
// wait some time to confirm that RemovePeer wasn't called on the server object.
|
|
errch = helpers.WaitForPeerAsync(server, client.Self().URLv4(), p2p.PeerEventTypeDrop, time.Second)
|
|
// simulate that event was received by a topic pool.
|
|
// topic pool will ignore this even because it sees that it is inbound connection.
|
|
topicPool.ConfirmAdded(server, clientID)
|
|
require.Contains(t, topicPool.pendingPeers, clientID)
|
|
require.False(t, topicPool.pendingPeers[clientID].dismissed)
|
|
|
|
select {
|
|
case err := <-errch:
|
|
require.EqualError(t, err, "wait for peer: timeout")
|
|
case <-time.After(10 * time.Second):
|
|
require.FailNow(t, "failed waiting for WaitPeerAsync")
|
|
}
|
|
}
|