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633 lines
17 KiB
633 lines
17 KiB
package conn
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import (
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"encoding/hex"
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"net"
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"testing"
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"time"
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"github.com/fortytw2/leaktest"
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"github.com/gogo/protobuf/proto"
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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/libs/protoio"
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tmp2p "github.com/tendermint/tendermint/proto/tendermint/p2p"
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"github.com/tendermint/tendermint/proto/tendermint/types"
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)
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const maxPingPongPacketSize = 1024 // bytes
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func createTestMConnection(conn net.Conn) *MConnection {
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onReceive := func(chID byte, msgBytes []byte) {
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}
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onError := func(r interface{}) {
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}
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c := createMConnectionWithCallbacks(conn, onReceive, onError)
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c.SetLogger(log.TestingLogger())
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return c
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}
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func createMConnectionWithCallbacks(
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conn net.Conn,
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onReceive func(chID byte, msgBytes []byte),
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onError func(r interface{}),
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) *MConnection {
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cfg := DefaultMConnConfig()
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cfg.PingInterval = 90 * time.Millisecond
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cfg.PongTimeout = 45 * time.Millisecond
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chDescs := []*ChannelDescriptor{{ID: 0x01, Priority: 1, SendQueueCapacity: 1}}
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c := NewMConnectionWithConfig(conn, chDescs, onReceive, onError, cfg)
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c.SetLogger(log.TestingLogger())
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return c
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}
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func TestMConnectionSendFlushStop(t *testing.T) {
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server, client := NetPipe()
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defer server.Close()
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defer client.Close()
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clientConn := createTestMConnection(client)
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err := clientConn.Start()
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require.Nil(t, err)
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defer clientConn.Stop() // nolint:errcheck // ignore for tests
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msg := []byte("abc")
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assert.True(t, clientConn.Send(0x01, msg))
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msgLength := 14
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// start the reader in a new routine, so we can flush
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errCh := make(chan error)
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go func() {
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msgB := make([]byte, msgLength)
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_, err := server.Read(msgB)
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if err != nil {
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t.Error(err)
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return
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}
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errCh <- err
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}()
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// stop the conn - it should flush all conns
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clientConn.FlushStop()
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timer := time.NewTimer(3 * time.Second)
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select {
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case <-errCh:
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case <-timer.C:
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t.Error("timed out waiting for msgs to be read")
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}
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}
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func TestMConnectionSend(t *testing.T) {
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server, client := NetPipe()
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defer server.Close()
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defer client.Close()
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mconn := createTestMConnection(client)
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err := mconn.Start()
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require.Nil(t, err)
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defer mconn.Stop() // nolint:errcheck // ignore for tests
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msg := []byte("Ant-Man")
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assert.True(t, mconn.Send(0x01, msg))
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// Note: subsequent Send/TrySend calls could pass because we are reading from
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// the send queue in a separate goroutine.
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_, err = server.Read(make([]byte, len(msg)))
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if err != nil {
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t.Error(err)
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}
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assert.True(t, mconn.CanSend(0x01))
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msg = []byte("Spider-Man")
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assert.True(t, mconn.TrySend(0x01, msg))
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_, err = server.Read(make([]byte, len(msg)))
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if err != nil {
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t.Error(err)
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}
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assert.False(t, mconn.CanSend(0x05), "CanSend should return false because channel is unknown")
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assert.False(t, mconn.Send(0x05, []byte("Absorbing Man")), "Send should return false because channel is unknown")
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}
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func TestMConnectionReceive(t *testing.T) {
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server, client := NetPipe()
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defer server.Close()
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defer client.Close()
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receivedCh := make(chan []byte)
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errorsCh := make(chan interface{})
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onReceive := func(chID byte, msgBytes []byte) {
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receivedCh <- msgBytes
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}
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onError := func(r interface{}) {
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errorsCh <- r
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}
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mconn1 := createMConnectionWithCallbacks(client, onReceive, onError)
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err := mconn1.Start()
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require.Nil(t, err)
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defer mconn1.Stop() // nolint:errcheck // ignore for tests
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mconn2 := createTestMConnection(server)
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err = mconn2.Start()
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require.Nil(t, err)
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defer mconn2.Stop() // nolint:errcheck // ignore for tests
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msg := []byte("Cyclops")
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assert.True(t, mconn2.Send(0x01, msg))
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select {
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case receivedBytes := <-receivedCh:
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assert.Equal(t, msg, receivedBytes)
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case err := <-errorsCh:
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t.Fatalf("Expected %s, got %+v", msg, err)
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case <-time.After(500 * time.Millisecond):
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t.Fatalf("Did not receive %s message in 500ms", msg)
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}
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}
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func TestMConnectionStatus(t *testing.T) {
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server, client := NetPipe()
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defer server.Close()
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defer client.Close()
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mconn := createTestMConnection(client)
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err := mconn.Start()
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require.Nil(t, err)
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defer mconn.Stop() // nolint:errcheck // ignore for tests
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status := mconn.Status()
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assert.NotNil(t, status)
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assert.Zero(t, status.Channels[0].SendQueueSize)
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}
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func TestMConnectionPongTimeoutResultsInError(t *testing.T) {
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server, client := net.Pipe()
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defer server.Close()
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defer client.Close()
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receivedCh := make(chan []byte)
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errorsCh := make(chan interface{})
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onReceive := func(chID byte, msgBytes []byte) {
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receivedCh <- msgBytes
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}
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onError := func(r interface{}) {
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errorsCh <- r
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}
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mconn := createMConnectionWithCallbacks(client, onReceive, onError)
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err := mconn.Start()
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require.Nil(t, err)
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defer mconn.Stop() // nolint:errcheck // ignore for tests
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serverGotPing := make(chan struct{})
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go func() {
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// read ping
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var pkt tmp2p.Packet
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_, err := protoio.NewDelimitedReader(server, maxPingPongPacketSize).ReadMsg(&pkt)
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require.NoError(t, err)
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serverGotPing <- struct{}{}
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}()
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<-serverGotPing
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pongTimerExpired := mconn.config.PongTimeout + 200*time.Millisecond
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select {
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case msgBytes := <-receivedCh:
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t.Fatalf("Expected error, but got %v", msgBytes)
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case err := <-errorsCh:
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assert.NotNil(t, err)
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case <-time.After(pongTimerExpired):
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t.Fatalf("Expected to receive error after %v", pongTimerExpired)
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}
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}
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func TestMConnectionMultiplePongsInTheBeginning(t *testing.T) {
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server, client := net.Pipe()
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defer server.Close()
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defer client.Close()
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receivedCh := make(chan []byte)
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errorsCh := make(chan interface{})
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onReceive := func(chID byte, msgBytes []byte) {
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receivedCh <- msgBytes
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}
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onError := func(r interface{}) {
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errorsCh <- r
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}
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mconn := createMConnectionWithCallbacks(client, onReceive, onError)
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err := mconn.Start()
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require.Nil(t, err)
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defer mconn.Stop() // nolint:errcheck // ignore for tests
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// sending 3 pongs in a row (abuse)
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protoWriter := protoio.NewDelimitedWriter(server)
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPong{}))
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require.NoError(t, err)
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPong{}))
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require.NoError(t, err)
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPong{}))
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require.NoError(t, err)
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serverGotPing := make(chan struct{})
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go func() {
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// read ping (one byte)
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var packet tmp2p.Packet
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_, err := protoio.NewDelimitedReader(server, maxPingPongPacketSize).ReadMsg(&packet)
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require.NoError(t, err)
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serverGotPing <- struct{}{}
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// respond with pong
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPong{}))
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require.NoError(t, err)
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}()
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<-serverGotPing
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pongTimerExpired := mconn.config.PongTimeout + 20*time.Millisecond
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select {
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case msgBytes := <-receivedCh:
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t.Fatalf("Expected no data, but got %v", msgBytes)
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case err := <-errorsCh:
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t.Fatalf("Expected no error, but got %v", err)
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case <-time.After(pongTimerExpired):
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assert.True(t, mconn.IsRunning())
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}
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}
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func TestMConnectionMultiplePings(t *testing.T) {
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server, client := net.Pipe()
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defer server.Close()
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defer client.Close()
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receivedCh := make(chan []byte)
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errorsCh := make(chan interface{})
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onReceive := func(chID byte, msgBytes []byte) {
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receivedCh <- msgBytes
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}
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onError := func(r interface{}) {
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errorsCh <- r
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}
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mconn := createMConnectionWithCallbacks(client, onReceive, onError)
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err := mconn.Start()
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require.Nil(t, err)
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defer mconn.Stop() // nolint:errcheck // ignore for tests
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// sending 3 pings in a row (abuse)
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// see https://github.com/tendermint/tendermint/issues/1190
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protoReader := protoio.NewDelimitedReader(server, maxPingPongPacketSize)
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protoWriter := protoio.NewDelimitedWriter(server)
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var pkt tmp2p.Packet
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPing{}))
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require.NoError(t, err)
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_, err = protoReader.ReadMsg(&pkt)
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require.NoError(t, err)
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPing{}))
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require.NoError(t, err)
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_, err = protoReader.ReadMsg(&pkt)
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require.NoError(t, err)
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPing{}))
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require.NoError(t, err)
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_, err = protoReader.ReadMsg(&pkt)
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require.NoError(t, err)
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assert.True(t, mconn.IsRunning())
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}
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func TestMConnectionPingPongs(t *testing.T) {
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// check that we are not leaking any go-routines
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defer leaktest.CheckTimeout(t, 10*time.Second)()
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server, client := net.Pipe()
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defer server.Close()
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defer client.Close()
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receivedCh := make(chan []byte)
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errorsCh := make(chan interface{})
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onReceive := func(chID byte, msgBytes []byte) {
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receivedCh <- msgBytes
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}
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onError := func(r interface{}) {
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errorsCh <- r
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}
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mconn := createMConnectionWithCallbacks(client, onReceive, onError)
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err := mconn.Start()
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require.Nil(t, err)
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defer mconn.Stop() // nolint:errcheck // ignore for tests
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serverGotPing := make(chan struct{})
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go func() {
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protoReader := protoio.NewDelimitedReader(server, maxPingPongPacketSize)
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protoWriter := protoio.NewDelimitedWriter(server)
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var pkt tmp2p.PacketPing
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// read ping
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_, err = protoReader.ReadMsg(&pkt)
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require.NoError(t, err)
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serverGotPing <- struct{}{}
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// respond with pong
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPong{}))
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require.NoError(t, err)
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time.Sleep(mconn.config.PingInterval)
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// read ping
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_, err = protoReader.ReadMsg(&pkt)
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require.NoError(t, err)
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serverGotPing <- struct{}{}
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// respond with pong
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_, err = protoWriter.WriteMsg(mustWrapPacket(&tmp2p.PacketPong{}))
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require.NoError(t, err)
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}()
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<-serverGotPing
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<-serverGotPing
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pongTimerExpired := (mconn.config.PongTimeout + 20*time.Millisecond) * 2
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select {
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case msgBytes := <-receivedCh:
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t.Fatalf("Expected no data, but got %v", msgBytes)
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case err := <-errorsCh:
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t.Fatalf("Expected no error, but got %v", err)
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case <-time.After(2 * pongTimerExpired):
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assert.True(t, mconn.IsRunning())
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}
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}
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func TestMConnectionStopsAndReturnsError(t *testing.T) {
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server, client := NetPipe()
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defer server.Close()
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defer client.Close()
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receivedCh := make(chan []byte)
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errorsCh := make(chan interface{})
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onReceive := func(chID byte, msgBytes []byte) {
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receivedCh <- msgBytes
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}
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onError := func(r interface{}) {
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errorsCh <- r
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}
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mconn := createMConnectionWithCallbacks(client, onReceive, onError)
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err := mconn.Start()
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require.Nil(t, err)
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defer mconn.Stop() // nolint:errcheck // ignore for tests
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if err := client.Close(); err != nil {
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t.Error(err)
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}
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select {
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case receivedBytes := <-receivedCh:
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t.Fatalf("Expected error, got %v", receivedBytes)
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case err := <-errorsCh:
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assert.NotNil(t, err)
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assert.False(t, mconn.IsRunning())
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case <-time.After(500 * time.Millisecond):
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t.Fatal("Did not receive error in 500ms")
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}
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}
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func newClientAndServerConnsForReadErrors(t *testing.T, chOnErr chan struct{}) (*MConnection, *MConnection) {
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server, client := NetPipe()
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onReceive := func(chID byte, msgBytes []byte) {}
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onError := func(r interface{}) {}
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// create client conn with two channels
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chDescs := []*ChannelDescriptor{
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{ID: 0x01, Priority: 1, SendQueueCapacity: 1},
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{ID: 0x02, Priority: 1, SendQueueCapacity: 1},
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}
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mconnClient := NewMConnection(client, chDescs, onReceive, onError)
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mconnClient.SetLogger(log.TestingLogger().With("module", "client"))
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err := mconnClient.Start()
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require.Nil(t, err)
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// create server conn with 1 channel
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// it fires on chOnErr when there's an error
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serverLogger := log.TestingLogger().With("module", "server")
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onError = func(r interface{}) {
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chOnErr <- struct{}{}
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}
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mconnServer := createMConnectionWithCallbacks(server, onReceive, onError)
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mconnServer.SetLogger(serverLogger)
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err = mconnServer.Start()
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require.Nil(t, err)
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return mconnClient, mconnServer
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}
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func expectSend(ch chan struct{}) bool {
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after := time.After(time.Second * 5)
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select {
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case <-ch:
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return true
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case <-after:
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return false
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}
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}
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func TestMConnectionReadErrorBadEncoding(t *testing.T) {
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chOnErr := make(chan struct{})
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mconnClient, mconnServer := newClientAndServerConnsForReadErrors(t, chOnErr)
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client := mconnClient.conn
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// Write it.
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_, err := client.Write([]byte{1, 2, 3, 4, 5})
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require.NoError(t, err)
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assert.True(t, expectSend(chOnErr), "badly encoded msgPacket")
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t.Cleanup(func() {
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if err := mconnClient.Stop(); err != nil {
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t.Log(err)
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}
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})
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t.Cleanup(func() {
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if err := mconnServer.Stop(); err != nil {
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t.Log(err)
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}
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})
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}
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func TestMConnectionReadErrorUnknownChannel(t *testing.T) {
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chOnErr := make(chan struct{})
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mconnClient, mconnServer := newClientAndServerConnsForReadErrors(t, chOnErr)
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msg := []byte("Ant-Man")
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// fail to send msg on channel unknown by client
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assert.False(t, mconnClient.Send(0x03, msg))
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// send msg on channel unknown by the server.
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// should cause an error
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assert.True(t, mconnClient.Send(0x02, msg))
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assert.True(t, expectSend(chOnErr), "unknown channel")
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t.Cleanup(func() {
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if err := mconnClient.Stop(); err != nil {
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t.Log(err)
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}
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})
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t.Cleanup(func() {
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if err := mconnServer.Stop(); err != nil {
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t.Log(err)
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}
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})
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}
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func TestMConnectionReadErrorLongMessage(t *testing.T) {
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chOnErr := make(chan struct{})
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chOnRcv := make(chan struct{})
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mconnClient, mconnServer := newClientAndServerConnsForReadErrors(t, chOnErr)
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defer mconnClient.Stop() // nolint:errcheck // ignore for tests
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defer mconnServer.Stop() // nolint:errcheck // ignore for tests
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mconnServer.onReceive = func(chID byte, msgBytes []byte) {
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chOnRcv <- struct{}{}
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}
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client := mconnClient.conn
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protoWriter := protoio.NewDelimitedWriter(client)
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// send msg thats just right
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var packet = tmp2p.PacketMsg{
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ChannelID: 0x01,
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EOF: true,
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Data: make([]byte, mconnClient.config.MaxPacketMsgPayloadSize),
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}
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_, err := protoWriter.WriteMsg(mustWrapPacket(&packet))
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require.NoError(t, err)
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assert.True(t, expectSend(chOnRcv), "msg just right")
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// send msg thats too long
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packet = tmp2p.PacketMsg{
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ChannelID: 0x01,
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EOF: true,
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Data: make([]byte, mconnClient.config.MaxPacketMsgPayloadSize+100),
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}
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_, err = protoWriter.WriteMsg(mustWrapPacket(&packet))
|
|
require.Error(t, err)
|
|
assert.True(t, expectSend(chOnErr), "msg too long")
|
|
}
|
|
|
|
func TestMConnectionReadErrorUnknownMsgType(t *testing.T) {
|
|
chOnErr := make(chan struct{})
|
|
mconnClient, mconnServer := newClientAndServerConnsForReadErrors(t, chOnErr)
|
|
defer mconnClient.Stop() // nolint:errcheck // ignore for tests
|
|
defer mconnServer.Stop() // nolint:errcheck // ignore for tests
|
|
|
|
// send msg with unknown msg type
|
|
_, err := protoio.NewDelimitedWriter(mconnClient.conn).WriteMsg(&types.Header{ChainID: "x"})
|
|
require.NoError(t, err)
|
|
assert.True(t, expectSend(chOnErr), "unknown msg type")
|
|
}
|
|
|
|
func TestMConnectionTrySend(t *testing.T) {
|
|
server, client := NetPipe()
|
|
defer server.Close()
|
|
defer client.Close()
|
|
|
|
mconn := createTestMConnection(client)
|
|
err := mconn.Start()
|
|
require.Nil(t, err)
|
|
defer mconn.Stop() // nolint:errcheck // ignore for tests
|
|
|
|
msg := []byte("Semicolon-Woman")
|
|
resultCh := make(chan string, 2)
|
|
assert.True(t, mconn.TrySend(0x01, msg))
|
|
_, err = server.Read(make([]byte, len(msg)))
|
|
require.NoError(t, err)
|
|
assert.True(t, mconn.CanSend(0x01))
|
|
assert.True(t, mconn.TrySend(0x01, msg))
|
|
assert.False(t, mconn.CanSend(0x01))
|
|
go func() {
|
|
mconn.TrySend(0x01, msg)
|
|
resultCh <- "TrySend"
|
|
}()
|
|
assert.False(t, mconn.CanSend(0x01))
|
|
assert.False(t, mconn.TrySend(0x01, msg))
|
|
assert.Equal(t, "TrySend", <-resultCh)
|
|
}
|
|
|
|
// nolint:lll //ignore line length for tests
|
|
func TestConnVectors(t *testing.T) {
|
|
|
|
testCases := []struct {
|
|
testName string
|
|
msg proto.Message
|
|
expBytes string
|
|
}{
|
|
{"PacketPing", &tmp2p.PacketPing{}, "0a00"},
|
|
{"PacketPong", &tmp2p.PacketPong{}, "1200"},
|
|
{"PacketMsg", &tmp2p.PacketMsg{ChannelID: 1, EOF: false, Data: []byte("data transmitted over the wire")}, "1a2208011a1e64617461207472616e736d6974746564206f766572207468652077697265"},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
tc := tc
|
|
|
|
pm := mustWrapPacket(tc.msg)
|
|
bz, err := pm.Marshal()
|
|
require.NoError(t, err, tc.testName)
|
|
|
|
require.Equal(t, tc.expBytes, hex.EncodeToString(bz), tc.testName)
|
|
}
|
|
}
|
|
|
|
func TestMConnectionChannelOverflow(t *testing.T) {
|
|
chOnErr := make(chan struct{})
|
|
chOnRcv := make(chan struct{})
|
|
|
|
mconnClient, mconnServer := newClientAndServerConnsForReadErrors(t, chOnErr)
|
|
t.Cleanup(stopAll(t, mconnClient, mconnServer))
|
|
|
|
mconnServer.onReceive = func(chID byte, msgBytes []byte) {
|
|
chOnRcv <- struct{}{}
|
|
}
|
|
|
|
client := mconnClient.conn
|
|
protoWriter := protoio.NewDelimitedWriter(client)
|
|
|
|
var packet = tmp2p.PacketMsg{
|
|
ChannelID: 0x01,
|
|
EOF: true,
|
|
Data: []byte(`42`),
|
|
}
|
|
_, err := protoWriter.WriteMsg(mustWrapPacket(&packet))
|
|
require.NoError(t, err)
|
|
assert.True(t, expectSend(chOnRcv))
|
|
|
|
packet.ChannelID = int32(1025)
|
|
_, err = protoWriter.WriteMsg(mustWrapPacket(&packet))
|
|
require.NoError(t, err)
|
|
assert.False(t, expectSend(chOnRcv))
|
|
|
|
}
|
|
|
|
type stopper interface {
|
|
Stop() error
|
|
}
|
|
|
|
func stopAll(t *testing.T, stoppers ...stopper) func() {
|
|
return func() {
|
|
for _, s := range stoppers {
|
|
if err := s.Stop(); err != nil {
|
|
t.Log(err)
|
|
}
|
|
}
|
|
}
|
|
}
|