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230 lines
6.0 KiB
230 lines
6.0 KiB
package p2p_test
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import (
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"context"
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"io"
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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/stretchr/testify/require"
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"github.com/tendermint/tendermint/internal/p2p"
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"github.com/tendermint/tendermint/internal/p2p/conn"
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"github.com/tendermint/tendermint/libs/log"
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)
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// Transports are mainly tested by common tests in transport_test.go, we
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// register a transport factory here to get included in those tests.
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func init() {
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testTransports["mconn"] = func(t *testing.T) p2p.Transport {
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transport := p2p.NewMConnTransport(
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log.TestingLogger(),
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conn.DefaultMConnConfig(),
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[]*p2p.ChannelDescriptor{{ID: chID, Priority: 1}},
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p2p.MConnTransportOptions{},
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)
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err := transport.Listen(p2p.Endpoint{
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Protocol: p2p.MConnProtocol,
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IP: net.IPv4(127, 0, 0, 1),
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Port: 0, // assign a random port
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})
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require.NoError(t, err)
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t.Cleanup(func() {
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require.NoError(t, transport.Close())
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})
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return transport
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}
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}
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func TestMConnTransport_AcceptBeforeListen(t *testing.T) {
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transport := p2p.NewMConnTransport(
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log.TestingLogger(),
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conn.DefaultMConnConfig(),
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[]*p2p.ChannelDescriptor{{ID: chID, Priority: 1}},
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p2p.MConnTransportOptions{
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MaxAcceptedConnections: 2,
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},
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)
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t.Cleanup(func() {
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_ = transport.Close()
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})
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_, err := transport.Accept()
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require.Error(t, err)
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require.NotEqual(t, io.EOF, err) // io.EOF should be returned after Close()
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}
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func TestMConnTransport_AcceptMaxAcceptedConnections(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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transport := p2p.NewMConnTransport(
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log.TestingLogger(),
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conn.DefaultMConnConfig(),
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[]*p2p.ChannelDescriptor{{ID: chID, Priority: 1}},
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p2p.MConnTransportOptions{
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MaxAcceptedConnections: 2,
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},
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)
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t.Cleanup(func() {
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_ = transport.Close()
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})
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err := transport.Listen(p2p.Endpoint{
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Protocol: p2p.MConnProtocol,
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IP: net.IPv4(127, 0, 0, 1),
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})
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require.NoError(t, err)
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require.NotEmpty(t, transport.Endpoints())
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endpoint := transport.Endpoints()[0]
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// Start a goroutine to just accept any connections.
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acceptCh := make(chan p2p.Connection, 10)
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go func() {
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for {
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conn, err := transport.Accept()
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if err != nil {
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return
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}
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acceptCh <- conn
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}
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}()
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// The first two connections should be accepted just fine.
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dial1, err := transport.Dial(ctx, endpoint)
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require.NoError(t, err)
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defer dial1.Close()
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accept1 := <-acceptCh
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defer accept1.Close()
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require.Equal(t, dial1.LocalEndpoint(), accept1.RemoteEndpoint())
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dial2, err := transport.Dial(ctx, endpoint)
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require.NoError(t, err)
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defer dial2.Close()
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accept2 := <-acceptCh
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defer accept2.Close()
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require.Equal(t, dial2.LocalEndpoint(), accept2.RemoteEndpoint())
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// The third connection will be dialed successfully, but the accept should
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// not go through.
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dial3, err := transport.Dial(ctx, endpoint)
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require.NoError(t, err)
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defer dial3.Close()
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select {
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case <-acceptCh:
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require.Fail(t, "unexpected accept")
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case <-time.After(time.Second):
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}
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// However, once either of the other connections are closed, the accept
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// goes through.
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require.NoError(t, accept1.Close())
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accept3 := <-acceptCh
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defer accept3.Close()
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require.Equal(t, dial3.LocalEndpoint(), accept3.RemoteEndpoint())
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}
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func TestMConnTransport_Listen(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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testcases := []struct {
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endpoint p2p.Endpoint
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ok bool
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}{
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// Valid v4 and v6 addresses, with mconn and tcp protocols.
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{p2p.Endpoint{Protocol: p2p.MConnProtocol, IP: net.IPv4zero}, true},
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{p2p.Endpoint{Protocol: p2p.MConnProtocol, IP: net.IPv4(127, 0, 0, 1)}, true},
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{p2p.Endpoint{Protocol: p2p.MConnProtocol, IP: net.IPv6zero}, true},
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{p2p.Endpoint{Protocol: p2p.MConnProtocol, IP: net.IPv6loopback}, true},
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{p2p.Endpoint{Protocol: p2p.TCPProtocol, IP: net.IPv4zero}, true},
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// Invalid endpoints.
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{p2p.Endpoint{}, false},
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{p2p.Endpoint{Protocol: p2p.MConnProtocol, Path: "foo"}, false},
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{p2p.Endpoint{Protocol: p2p.MConnProtocol, IP: net.IPv4zero, Path: "foo"}, false},
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}
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for _, tc := range testcases {
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tc := tc
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t.Run(tc.endpoint.String(), func(t *testing.T) {
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t.Cleanup(leaktest.Check(t))
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ctx, cancel = context.WithCancel(ctx)
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defer cancel()
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transport := p2p.NewMConnTransport(
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log.TestingLogger(),
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conn.DefaultMConnConfig(),
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[]*p2p.ChannelDescriptor{{ID: chID, Priority: 1}},
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p2p.MConnTransportOptions{},
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)
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// Transport should not listen on any endpoints yet.
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require.Empty(t, transport.Endpoints())
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// Start listening, and check any expected errors.
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err := transport.Listen(tc.endpoint)
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if !tc.ok {
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require.Error(t, err)
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return
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}
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require.NoError(t, err)
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// Check the endpoint.
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endpoints := transport.Endpoints()
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require.Len(t, endpoints, 1)
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endpoint := endpoints[0]
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require.Equal(t, p2p.MConnProtocol, endpoint.Protocol)
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if tc.endpoint.IP.IsUnspecified() {
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require.True(t, endpoint.IP.IsUnspecified(),
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"expected unspecified IP, got %v", endpoint.IP)
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} else {
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require.True(t, tc.endpoint.IP.Equal(endpoint.IP),
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"expected %v, got %v", tc.endpoint.IP, endpoint.IP)
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}
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require.NotZero(t, endpoint.Port)
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require.Empty(t, endpoint.Path)
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dialedChan := make(chan struct{})
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var peerConn p2p.Connection
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go func() {
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// Dialing the endpoint should work.
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var err error
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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peerConn, err = transport.Dial(ctx, endpoint)
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require.NoError(t, err)
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close(dialedChan)
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}()
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conn, err := transport.Accept()
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require.NoError(t, err)
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_ = conn.Close()
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<-dialedChan
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// closing the connection should not error
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require.NoError(t, peerConn.Close())
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// try to read from the connection should error
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_, _, err = peerConn.ReceiveMessage()
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require.Error(t, err)
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// Trying to listen again should error.
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err = transport.Listen(tc.endpoint)
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require.Error(t, err)
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// close the transport
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_ = transport.Close()
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// Dialing the closed endpoint should error
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_, err = transport.Dial(ctx, endpoint)
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require.Error(t, err)
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})
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}
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}
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