ceremonyclient/go-libp2p/p2p/test/negotiation/muxer_test.go

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package negotiation
import (
"context"
"crypto/rand"
"fmt"
"testing"
"github.com/libp2p/go-libp2p"
"github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/libp2p/go-libp2p/core/protocol"
"github.com/libp2p/go-libp2p/core/sec/insecure"
"github.com/libp2p/go-libp2p/p2p/muxer/yamux"
"github.com/libp2p/go-libp2p/p2p/security/noise"
tls "github.com/libp2p/go-libp2p/p2p/security/tls"
"github.com/libp2p/go-libp2p/p2p/transport/tcp"
"github.com/stretchr/testify/require"
)
var (
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yamuxOpt = libp2p.Muxer("/yamux", yamux.DefaultTransport)
anotherYamuxOpt = libp2p.Muxer("/another-yamux", yamux.DefaultTransport)
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)
type testcase struct {
Name string
ServerPreference []libp2p.Option
ClientPreference []libp2p.Option
Error string
Expected protocol.ID
}
type security struct {
Name string
Option libp2p.Option
}
func TestMuxerNegotiation(t *testing.T) {
testcases := []testcase{
{
Name: "server and client have the same preference",
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ServerPreference: []libp2p.Option{yamuxOpt, anotherYamuxOpt},
ClientPreference: []libp2p.Option{yamuxOpt, anotherYamuxOpt},
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Expected: "/yamux",
},
{
Name: "client only supports one muxer",
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ServerPreference: []libp2p.Option{yamuxOpt, anotherYamuxOpt},
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ClientPreference: []libp2p.Option{yamuxOpt},
Expected: "/yamux",
},
{
Name: "server only supports one muxer",
ServerPreference: []libp2p.Option{yamuxOpt},
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ClientPreference: []libp2p.Option{anotherYamuxOpt, yamuxOpt},
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Expected: "/yamux",
},
{
Name: "client preference preferred",
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ServerPreference: []libp2p.Option{yamuxOpt, anotherYamuxOpt},
ClientPreference: []libp2p.Option{anotherYamuxOpt, yamuxOpt},
Expected: "/another-yamux",
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},
{
Name: "no preference overlap",
ServerPreference: []libp2p.Option{yamuxOpt},
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ClientPreference: []libp2p.Option{anotherYamuxOpt},
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Error: "failed to negotiate stream multiplexer: protocols not supported",
},
}
clientID, _, err := crypto.GenerateEd25519Key(rand.Reader)
require.NoError(t, err)
serverID, _, err := crypto.GenerateEd25519Key(rand.Reader)
require.NoError(t, err)
securities := []security{
{Name: "noise", Option: libp2p.Security("/noise", noise.New)},
{Name: "tls", Option: libp2p.Security("/tls", tls.New)},
{Name: "insecure", Option: libp2p.Security("/insecure", insecure.NewWithIdentity)},
}
for _, tc := range testcases {
tc := tc
for _, sec := range securities {
sec := sec
t.Run(fmt.Sprintf("%s: %s", sec.Name, tc.Name), func(t *testing.T) {
server, err := libp2p.New(
libp2p.Identity(serverID),
sec.Option,
libp2p.ChainOptions(tc.ServerPreference...),
libp2p.Transport(tcp.NewTCPTransport),
libp2p.ListenAddrStrings("/ip4/127.0.0.1/tcp/0"),
)
require.NoError(t, err)
client, err := libp2p.New(
libp2p.Identity(clientID),
sec.Option,
libp2p.ChainOptions(tc.ClientPreference...),
libp2p.Transport(tcp.NewTCPTransport),
libp2p.NoListenAddrs,
)
require.NoError(t, err)
err = client.Connect(context.Background(), peer.AddrInfo{ID: server.ID(), Addrs: server.Addrs()})
if tc.Error != "" {
require.Error(t, err)
require.ErrorContains(t, err, tc.Error)
return
}
require.NoError(t, err)
conns := client.Network().ConnsToPeer(server.ID())
require.Len(t, conns, 1, "expected exactly one connection")
require.Equal(t, tc.Expected, conns[0].ConnState().StreamMultiplexer)
})
}
}
}