package client import ( "context" "encoding/json" "fmt" "net/http" "net/http/httptest" "sort" "strconv" "strings" "sync" "testing" "time" "github.com/gorilla/websocket" "github.com/nspcc-dev/neo-go/pkg/config/netmode" "github.com/nspcc-dev/neo-go/pkg/core/transaction" "github.com/nspcc-dev/neo-go/pkg/network/payload" "github.com/nspcc-dev/neo-go/pkg/rpc/request" "github.com/nspcc-dev/neo-go/pkg/util" "github.com/stretchr/testify/require" "go.uber.org/atomic" ) func TestWSClientClose(t *testing.T) { srv := initTestServer(t, "") wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) wsc.Close() } func TestWSClientSubscription(t *testing.T) { var cases = map[string]func(*WSClient) (string, error){ "blocks": func(wsc *WSClient) (string, error) { return wsc.SubscribeForNewBlocks(nil) }, "transactions": func(wsc *WSClient) (string, error) { return wsc.SubscribeForNewTransactions(nil, nil) }, "notifications": func(wsc *WSClient) (string, error) { return wsc.SubscribeForExecutionNotifications(nil, nil) }, "executions": func(wsc *WSClient) (string, error) { return wsc.SubscribeForTransactionExecutions(nil) }, } t.Run("good", func(t *testing.T) { for name, f := range cases { t.Run(name, func(t *testing.T) { srv := initTestServer(t, `{"jsonrpc": "2.0", "id": 1, "result": "55aaff00"}`) wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) wsc.getNextRequestID = getTestRequestID require.NoError(t, wsc.Init()) id, err := f(wsc) require.NoError(t, err) require.Equal(t, "55aaff00", id) }) } }) t.Run("bad", func(t *testing.T) { for name, f := range cases { t.Run(name, func(t *testing.T) { srv := initTestServer(t, `{"jsonrpc": "2.0", "id": 1, "error":{"code":-32602,"message":"Invalid Params"}}`) wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) wsc.getNextRequestID = getTestRequestID require.NoError(t, wsc.Init()) _, err = f(wsc) require.Error(t, err) }) } }) } func TestWSClientUnsubscription(t *testing.T) { type responseCheck struct { response string code func(*testing.T, *WSClient) } var cases = map[string]responseCheck{ "good": {`{"jsonrpc": "2.0", "id": 1, "result": true}`, func(t *testing.T, wsc *WSClient) { // We can't really subscribe using this stub server, so set up wsc internals. wsc.subscriptions["0"] = true err := wsc.Unsubscribe("0") require.NoError(t, err) }}, "all": {`{"jsonrpc": "2.0", "id": 1, "result": true}`, func(t *testing.T, wsc *WSClient) { // We can't really subscribe using this stub server, so set up wsc internals. wsc.subscriptions["0"] = true err := wsc.UnsubscribeAll() require.NoError(t, err) require.Equal(t, 0, len(wsc.subscriptions)) }}, "not subscribed": {`{"jsonrpc": "2.0", "id": 1, "result": true}`, func(t *testing.T, wsc *WSClient) { err := wsc.Unsubscribe("0") require.Error(t, err) }}, "error returned": {`{"jsonrpc": "2.0", "id": 1, "error":{"code":-32602,"message":"Invalid Params"}}`, func(t *testing.T, wsc *WSClient) { // We can't really subscribe using this stub server, so set up wsc internals. wsc.subscriptions["0"] = true err := wsc.Unsubscribe("0") require.Error(t, err) }}, "false returned": {`{"jsonrpc": "2.0", "id": 1, "result": false}`, func(t *testing.T, wsc *WSClient) { // We can't really subscribe using this stub server, so set up wsc internals. wsc.subscriptions["0"] = true err := wsc.Unsubscribe("0") require.Error(t, err) }}, } for name, rc := range cases { t.Run(name, func(t *testing.T) { srv := initTestServer(t, rc.response) wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) wsc.getNextRequestID = getTestRequestID require.NoError(t, wsc.Init()) rc.code(t, wsc) }) } } func TestWSClientEvents(t *testing.T) { var ok bool // Events from RPC server testchain. var events = []string{ `{"jsonrpc":"2.0","method":"transaction_executed","params":[{"container":"0xe1cd5e57e721d2a2e05fb1f08721b12057b25ab1dd7fd0f33ee1639932fdfad7","trigger":"Application","vmstate":"HALT","gasconsumed":"22910000","stack":[],"notifications":[{"contract":"0x1b4357bff5a01bdf2a6581247cf9ed1e24629176","eventname":"contract call","state":{"type":"Array","value":[{"type":"ByteString","value":"dHJhbnNmZXI="},{"type":"Array","value":[{"type":"ByteString","value":"dpFiJB7t+XwkgWUq3xug9b9XQxs="},{"type":"ByteString","value":"MW6FEDkBnTnfwsN9bD/uGf1YCYc="},{"type":"Integer","value":"1000"}]}]}},{"contract":"0x1b4357bff5a01bdf2a6581247cf9ed1e24629176","eventname":"transfer","state":{"type":"Array","value":[{"type":"ByteString","value":"dpFiJB7t+XwkgWUq3xug9b9XQxs="},{"type":"ByteString","value":"MW6FEDkBnTnfwsN9bD/uGf1YCYc="},{"type":"Integer","value":"1000"}]}}]}]}`, `{"jsonrpc":"2.0","method":"notification_from_execution","params":[{"container":"0xe1cd5e57e721d2a2e05fb1f08721b12057b25ab1dd7fd0f33ee1639932fdfad7","contract":"0x1b4357bff5a01bdf2a6581247cf9ed1e24629176","eventname":"contract call","state":{"type":"Array","value":[{"type":"ByteString","value":"dHJhbnNmZXI="},{"type":"Array","value":[{"type":"ByteString","value":"dpFiJB7t+XwkgWUq3xug9b9XQxs="},{"type":"ByteString","value":"MW6FEDkBnTnfwsN9bD/uGf1YCYc="},{"type":"Integer","value":"1000"}]}]}}]}`, `{"jsonrpc":"2.0","method":"transaction_executed","params":[{"container":"0xf97a72b7722c109f909a8bc16c22368c5023d85828b09b127b237aace33cf099","trigger":"Application","vmstate":"HALT","gasconsumed":"6042610","stack":[],"notifications":[{"contract":"0xe65ff7b3a02d207b584a5c27057d4e9862ef01da","eventname":"contract call","state":{"type":"Array","value":[{"type":"ByteString","value":"dHJhbnNmZXI="},{"type":"Array","value":[{"type":"ByteString","value":"MW6FEDkBnTnfwsN9bD/uGf1YCYc="},{"type":"ByteString","value":"IHKCdK+vw29DoHHTKM+j5inZy7A="},{"type":"Integer","value":"123"}]}]}},{"contract":"0xe65ff7b3a02d207b584a5c27057d4e9862ef01da","eventname":"transfer","state":{"type":"Array","value":[{"type":"ByteString","value":"MW6FEDkBnTnfwsN9bD/uGf1YCYc="},{"type":"ByteString","value":"IHKCdK+vw29DoHHTKM+j5inZy7A="},{"type":"Integer","value":"123"}]}}]}]}`, fmt.Sprintf(`{"jsonrpc":"2.0","method":"block_added","params":[%s]}`, b1Verbose), `{"jsonrpc":"2.0","method":"event_missed","params":[]}`, } srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { if req.URL.Path == "/ws" && req.Method == "GET" { var upgrader = websocket.Upgrader{} ws, err := upgrader.Upgrade(w, req, nil) require.NoError(t, err) for _, event := range events { err = ws.SetWriteDeadline(time.Now().Add(2 * time.Second)) require.NoError(t, err) err = ws.WriteMessage(1, []byte(event)) if err != nil { break } } ws.Close() return } })) wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) wsc.getNextRequestID = getTestRequestID wsc.cache.initDone = true // Our server mock is restricted, so perform initialisation manually. wsc.cache.network = netmode.UnitTestNet for range events { select { case _, ok = <-wsc.Notifications: case <-time.After(time.Second): t.Fatal("timeout waiting for event") } require.True(t, ok) } select { case _, ok = <-wsc.Notifications: case <-time.After(time.Second): t.Fatal("timeout waiting for event") } // Connection closed by server. require.False(t, ok) } func TestWSExecutionVMStateCheck(t *testing.T) { // Will answer successfully if request slips through. srv := initTestServer(t, `{"jsonrpc": "2.0", "id": 1, "result": "55aaff00"}`) wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) wsc.getNextRequestID = getTestRequestID require.NoError(t, wsc.Init()) filter := "NONE" _, err = wsc.SubscribeForTransactionExecutions(&filter) require.Error(t, err) wsc.Close() } func TestWSFilteredSubscriptions(t *testing.T) { var cases = []struct { name string clientCode func(*testing.T, *WSClient) serverCode func(*testing.T, *request.Params) }{ {"blocks", func(t *testing.T, wsc *WSClient) { primary := 3 _, err := wsc.SubscribeForNewBlocks(&primary) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.BlockFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Equal(t, 3, filt.Primary) }, }, {"transactions sender", func(t *testing.T, wsc *WSClient) { sender := util.Uint160{1, 2, 3, 4, 5} _, err := wsc.SubscribeForNewTransactions(&sender, nil) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.TxFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Equal(t, util.Uint160{1, 2, 3, 4, 5}, *filt.Sender) require.Nil(t, filt.Signer) }, }, {"transactions signer", func(t *testing.T, wsc *WSClient) { signer := util.Uint160{0, 42} _, err := wsc.SubscribeForNewTransactions(nil, &signer) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.TxFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Nil(t, filt.Sender) require.Equal(t, util.Uint160{0, 42}, *filt.Signer) }, }, {"transactions sender and signer", func(t *testing.T, wsc *WSClient) { sender := util.Uint160{1, 2, 3, 4, 5} signer := util.Uint160{0, 42} _, err := wsc.SubscribeForNewTransactions(&sender, &signer) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.TxFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Equal(t, util.Uint160{1, 2, 3, 4, 5}, *filt.Sender) require.Equal(t, util.Uint160{0, 42}, *filt.Signer) }, }, {"notifications contract hash", func(t *testing.T, wsc *WSClient) { contract := util.Uint160{1, 2, 3, 4, 5} _, err := wsc.SubscribeForExecutionNotifications(&contract, nil) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.NotificationFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Equal(t, util.Uint160{1, 2, 3, 4, 5}, *filt.Contract) require.Nil(t, filt.Name) }, }, {"notifications name", func(t *testing.T, wsc *WSClient) { name := "my_pretty_notification" _, err := wsc.SubscribeForExecutionNotifications(nil, &name) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.NotificationFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Equal(t, "my_pretty_notification", *filt.Name) require.Nil(t, filt.Contract) }, }, {"notifications contract hash and name", func(t *testing.T, wsc *WSClient) { contract := util.Uint160{1, 2, 3, 4, 5} name := "my_pretty_notification" _, err := wsc.SubscribeForExecutionNotifications(&contract, &name) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.NotificationFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Equal(t, util.Uint160{1, 2, 3, 4, 5}, *filt.Contract) require.Equal(t, "my_pretty_notification", *filt.Name) }, }, {"executions", func(t *testing.T, wsc *WSClient) { state := "FAULT" _, err := wsc.SubscribeForTransactionExecutions(&state) require.NoError(t, err) }, func(t *testing.T, p *request.Params) { param := p.Value(1) filt := new(request.ExecutionFilter) require.NoError(t, json.Unmarshal(param.RawMessage, filt)) require.Equal(t, "FAULT", filt.State) }, }, } for _, c := range cases { t.Run(c.name, func(t *testing.T) { srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { if req.URL.Path == "/ws" && req.Method == "GET" { var upgrader = websocket.Upgrader{} ws, err := upgrader.Upgrade(w, req, nil) require.NoError(t, err) err = ws.SetReadDeadline(time.Now().Add(2 * time.Second)) require.NoError(t, err) req := request.In{} err = ws.ReadJSON(&req) require.NoError(t, err) params := request.Params(req.RawParams) c.serverCode(t, ¶ms) err = ws.SetWriteDeadline(time.Now().Add(2 * time.Second)) require.NoError(t, err) err = ws.WriteMessage(1, []byte(`{"jsonrpc": "2.0", "id": 1, "result": "0"}`)) require.NoError(t, err) ws.Close() } })) wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) wsc.getNextRequestID = getTestRequestID wsc.cache.network = netmode.UnitTestNet c.clientCode(t, wsc) wsc.Close() }) } } func TestNewWS(t *testing.T) { srv := initTestServer(t, "") t.Run("good", func(t *testing.T) { c, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) c.getNextRequestID = getTestRequestID c.cache.network = netmode.UnitTestNet require.NoError(t, c.Init()) }) t.Run("bad URL", func(t *testing.T) { _, err := NewWS(context.TODO(), strings.TrimPrefix(srv.URL, "http://"), Options{}) require.Error(t, err) }) } func TestWSConcurrentAccess(t *testing.T) { var ids struct { lock sync.RWMutex m map[int]struct{} } ids.m = make(map[int]struct{}) srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { if req.URL.Path == "/ws" && req.Method == "GET" { var upgrader = websocket.Upgrader{} ws, err := upgrader.Upgrade(w, req, nil) require.NoError(t, err) for { err = ws.SetReadDeadline(time.Now().Add(2 * time.Second)) require.NoError(t, err) _, p, err := ws.ReadMessage() if err != nil { break } r := request.NewIn() err = json.Unmarshal(p, r) if err != nil { t.Fatalf("Cannot decode request body: %s", req.Body) } i, err := strconv.Atoi(string(r.RawID)) require.NoError(t, err) ids.lock.Lock() ids.m[i] = struct{}{} ids.lock.Unlock() var response string // Different responses to catch possible unmarshalling errors connected with invalid IDs distribution. switch r.Method { case "getblockcount": response = fmt.Sprintf(`{"id":%s,"jsonrpc":"2.0","result":123}`, r.RawID) case "getversion": response = fmt.Sprintf(`{"id":%s,"jsonrpc":"2.0","result":{"network":42,"tcpport":20332,"wsport":20342,"nonce":2153672787,"useragent":"/NEO-GO:0.73.1-pre-273-ge381358/"}}`, r.RawID) case "getblockhash": response = fmt.Sprintf(`{"id":%s,"jsonrpc":"2.0","result":"0x157ca5e5b8cf8f84c9660502a3270b346011612bded1514a6847f877c433a9bb"}`, r.RawID) } err = ws.SetWriteDeadline(time.Now().Add(2 * time.Second)) require.NoError(t, err) err = ws.WriteMessage(1, []byte(response)) if err != nil { break } } ws.Close() return } })) t.Cleanup(srv.Close) wsc, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) batchCount := 100 completed := atomic.NewInt32(0) for i := 0; i < batchCount; i++ { go func() { _, err := wsc.GetBlockCount() require.NoError(t, err) completed.Inc() }() go func() { _, err := wsc.GetBlockHash(123) require.NoError(t, err) completed.Inc() }() go func() { _, err := wsc.GetVersion() require.NoError(t, err) completed.Inc() }() } require.Eventually(t, func() bool { return int(completed.Load()) == batchCount*3 }, time.Second, 100*time.Millisecond) ids.lock.RLock() require.True(t, len(ids.m) > batchCount) idsList := make([]int, 0, len(ids.m)) for i := range ids.m { idsList = append(idsList, i) } ids.lock.RUnlock() sort.Ints(idsList) require.Equal(t, 1, idsList[0]) require.Less(t, idsList[len(idsList)-1], batchCount*3+1) // batchCount*requestsPerBatch+1 wsc.Close() } func TestWSDoubleClose(t *testing.T) { srv := initTestServer(t, "") c, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) require.NotPanics(t, func() { c.Close() c.Close() }) } func TestWS_RequestAfterClose(t *testing.T) { srv := initTestServer(t, "") c, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) c.Close() require.NotPanics(t, func() { _, err = c.GetBlockCount() }) require.Error(t, err) require.True(t, strings.Contains(err.Error(), "connection lost before registering response channel")) } func TestWSClient_ConnClosedError(t *testing.T) { t.Run("standard closing", func(t *testing.T) { srv := initTestServer(t, `{"jsonrpc": "2.0", "id": 1, "result": 123}`) c, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) // Check client is working. _, err = c.GetBlockCount() require.NoError(t, err) err = c.GetError() require.NoError(t, err) c.Close() err = c.GetError() require.NoError(t, err) }) t.Run("malformed request", func(t *testing.T) { srv := initTestServer(t, "") c, err := NewWS(context.TODO(), httpURLtoWS(srv.URL), Options{}) require.NoError(t, err) defaultMaxBlockSize := 262144 _, err = c.SubmitP2PNotaryRequest(&payload.P2PNotaryRequest{ MainTransaction: &transaction.Transaction{ Script: make([]byte, defaultMaxBlockSize*3), }, FallbackTransaction: &transaction.Transaction{}, }) require.Error(t, err) err = c.GetError() require.Error(t, err) require.True(t, strings.Contains(err.Error(), "failed to read JSON response (timeout/connection loss/malformed response)"), err.Error()) }) }