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116 lines
3.1 KiB
116 lines
3.1 KiB
package p2p_test
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import (
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"errors"
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"testing"
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gogotypes "github.com/gogo/protobuf/types"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/p2p"
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)
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type TestMessage = gogotypes.StringValue
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func echoReactor(channel *p2p.Channel) {
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for {
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select {
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case envelope := <-channel.In():
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channel.Out() <- p2p.Envelope{
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To: envelope.From,
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Message: &TestMessage{Value: envelope.Message.(*TestMessage).Value},
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}
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case <-channel.Done():
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return
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}
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}
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}
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func TestRouter(t *testing.T) {
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logger := log.TestingLogger()
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network := p2p.NewMemoryNetwork(logger)
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transport := network.GenerateTransport()
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chID := p2p.ChannelID(1)
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// Start some other in-memory network nodes to communicate with, running
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// a simple echo reactor that returns received messages.
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peers := []p2p.PeerAddress{}
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for i := 0; i < 3; i++ {
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peerTransport := network.GenerateTransport()
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peerRouter := p2p.NewRouter(logger.With("peerID", i), map[p2p.Protocol]p2p.Transport{
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p2p.MemoryProtocol: peerTransport,
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}, nil)
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peers = append(peers, peerTransport.Endpoints()[0].PeerAddress())
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channel, err := peerRouter.OpenChannel(chID, &TestMessage{})
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require.NoError(t, err)
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defer channel.Close()
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go echoReactor(channel)
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err = peerRouter.Start()
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require.NoError(t, err)
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defer func() { require.NoError(t, peerRouter.Stop()) }()
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}
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// Start the main router and connect it to the peers above.
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router := p2p.NewRouter(logger, map[p2p.Protocol]p2p.Transport{
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p2p.MemoryProtocol: transport,
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}, peers)
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channel, err := router.OpenChannel(chID, &TestMessage{})
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require.NoError(t, err)
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peerUpdates := router.SubscribePeerUpdates()
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err = router.Start()
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require.NoError(t, err)
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defer func() {
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channel.Close()
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peerUpdates.Close()
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require.NoError(t, router.Stop())
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}()
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// Wait for peers to come online, and ping them as they do.
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for i := 0; i < len(peers); i++ {
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peerUpdate := <-peerUpdates.Updates()
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peerID := peerUpdate.PeerID
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require.Equal(t, p2p.PeerUpdate{
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PeerID: peerID,
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Status: p2p.PeerStatusUp,
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}, peerUpdate)
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channel.Out() <- p2p.Envelope{To: peerID, Message: &TestMessage{Value: "hi!"}}
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assert.Equal(t, p2p.Envelope{
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From: peerID,
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Message: &TestMessage{Value: "hi!"},
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}, (<-channel.In()).Strip())
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}
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// We then submit an error for a peer, and watch it get disconnected.
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channel.Error() <- p2p.PeerError{
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PeerID: peers[0].NodeID(),
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Err: errors.New("test error"),
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Severity: p2p.PeerErrorSeverityCritical,
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}
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peerUpdate := <-peerUpdates.Updates()
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require.Equal(t, p2p.PeerUpdate{
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PeerID: peers[0].NodeID(),
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Status: p2p.PeerStatusDown,
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}, peerUpdate)
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// We now broadcast a message, which we should receive back from only two peers.
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channel.Out() <- p2p.Envelope{
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Broadcast: true,
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Message: &TestMessage{Value: "broadcast"},
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}
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for i := 0; i < len(peers)-1; i++ {
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envelope := <-channel.In()
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require.NotEqual(t, peers[0].NodeID(), envelope.From)
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require.Equal(t, &TestMessage{Value: "broadcast"}, envelope.Message)
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}
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select {
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case envelope := <-channel.In():
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t.Errorf("unexpected message: %v", envelope)
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default:
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}
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}
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