How to use RPCCall method of rpctype Package

Best Syzkaller code snippet using rpctype.RPCCall

fuzzer.go

Source:fuzzer.go

...388	////389	// SaveSnapshot (async) then immediately close connection390	// We assume the connection is closed before SaveSnapshot runs; yes, this may be a race condition...391	fuzzer.manager.Close()392	rpctype.RPCCallAsync(globalManagerAddr, "Manager.SaveSnapshot", aName, nil)393	// Wait until SaveSnapshot finished then continue394	// - Poll manager via transient connection (i.e., RPCCall)395	// - Set connection timeout so that when snapshot is reloaded, it doesn't wait indefinitely for a response396	saveSnapIsFinished := false397	rCheckSaveSnapDone := &rpctype.BoolRes{B: false}398	backOffN := float64(0)399	for !saveSnapIsFinished {400		// Exponential backoff the re-connection to a max of 1 second401		backOffUnits := math.Min(1000, 20*math.Pow(1.25, backOffN))402		totalTime := time.Duration(backOffUnits) * time.Millisecond403		time.Sleep(totalTime)404		backOffN++405		//log.Logf(1, "****** fuzzer.cmdManagerToSaveSnapshot: checking if SaveSnapshot is done... ******\n")406		if err := rpctype.RPCCallTimeout(10*time.Millisecond, globalManagerAddr, "Manager.CheckIsSaveSnapDone", aName, rCheckSaveSnapDone); err != nil {407			//log.Logf(1, "****** fuzzer.cmdManagerToSaveSnapshot: Manager.CheckIsSaveSnapDone call failed; trying again... ******\n")408		}409		saveSnapIsFinished = rCheckSaveSnapDone.B410		//log.Logf(1, "****** fuzzer.cmdManagerToSaveSnapshot: CheckIsSaveSnapDone returned %t ******\n", saveSnapIsFinished)411	}412	// Reconnect413	log.Logf(1, "dialing manager at %v", globalManagerAddr)414	tmpManager, err := rpctype.NewRPCClient(globalManagerAddr)415	if err != nil {416		log.Fatalf("failed to connect to manager: %v ", err)417	}418	fuzzer.manager = tmpManager419	isWaitingTest = false ////420	log.Logf(1, "****** fuzzer.cmdManagerToSaveSnapshot: SaveSnapshot done! ******\n")421	// Check whether to enable Kasper for this run422	log.Logf(1, "****** fuzzer.cmdManagerToSaveSnapshot: Sending CheckEnableKasper to manager... ******\n")423	rCheckEnableSpec := &rpctype.BoolRes{B: false}424	if err := fuzzer.manager.Call("Manager.CheckEnableKasper", aName, rCheckEnableSpec); err != nil {425		log.Fatalf("****** Manager.CheckEnableKasper call failed: %v ******", err)426	}427	log.Logf(1, "****** fuzzer.cmdManagerToSaveSnapshot: CheckEnableKasper done! ******\n")428	return rCheckEnableSpec.B429}430// This should be called with the rpc mutex locked431func (fuzzer *Fuzzer) cmdManagerToLoadSnapshot() {432	aName := &rpctype.NameArg{Name: fuzzer.name}433	log.Logf(1, "****** fuzzer.cmdManagerToLoadSnapshot: Sending LoadSnapshot to manager (async)... ******\n")434	////435	isWaitingTest := true436	go func() {437		for isWaitingTest {438			log.Logf(1, "****** fuzzer.cmdManagerToLoadSnapshot: waiting for LoadSnapshot... ******\n")439			time.Sleep(2 * time.Second)440		}441	}()442	////443	fuzzer.manager.Close()444	rpctype.RPCCallAsync(globalManagerAddr, "Manager.LoadSnapshot", aName, nil)445	time.Sleep(1 * time.Hour)446	log.Fatalf("****** ERROR: cmdManagerToLoadSnapshot SHOULD NOT RETURN ******")447	isWaitingTest = false ////448}449func (fuzzer *Fuzzer) addInputFromAnotherFuzzer(inp rpctype.RPCInput) {450	p, err := fuzzer.target.Deserialize(inp.Prog, prog.NonStrict)451	if err != nil {452		log.Fatalf("failed to deserialize prog from another fuzzer: %v", err)453	}454	sig := hash.Hash(inp.Prog)455	sign := inp.Signal.Deserialize()456	fuzzer.addInputToCorpus(p, sign, sig)457}458func (fuzzer *FuzzerSnapshot) chooseProgram(r *rand.Rand) *prog.Prog {...

hub.go

Source:hub.go

...88		a.Corpus = a.Corpus[:max]89	}90	// Hub.Connect request can be very large, so do it on a transient connection91	// (rpc connection buffers never shrink).92	if err := rpctype.RPCCall(hc.cfg.HubAddr, "Hub.Connect", a, nil); err != nil {93		return nil, err94	}95	hub, err := rpctype.NewRPCClient(hc.cfg.HubAddr)96	if err != nil {97		return nil, err98	}99	hc.hubCorpus = hubCorpus100	hc.fresh = false101	return hub, nil102}103func (hc *HubConnector) sync(hub *rpctype.RPCClient, corpus [][]byte) error {104	a := &rpctype.HubSyncArgs{105		Client:  hc.cfg.HubClient,106		Key:     hc.cfg.HubKey,...

api.go

Source:api.go

...85	RPCTypeCall   RPCType = 086	RPCTypeReturn RPCType = 187	RPCTypeCancel RPCType = 288)89type RPCCall struct {90	ID   string91	Key  uint3292	Data map[string][]byte93}94type RPCReturn struct {95	Key     uint3296	Err     string97	ErrCode int98}99type RPCCancel struct {100	Key uint32101}...

RPCCall

Using AI Code Generation

1import (2type Args struct {3}4type Quotient struct {5}6func main() {

RPCCall

Using AI Code Generation

1import (2type Args struct {3}4type Quotient struct {5}6func main() {7	client, err := rpc.DialHTTP("tcp", "localhost:1234")8	if err != nil {9		fmt.Println("Error in dialing:", err)10	}11	args := Args{17, 8}12	err = client.Call("Arith.Multiply", args, &reply)13	if err != nil {14		fmt.Println("Error in Arith.Multiply:", err)15	}16	fmt.Printf("Arith: %d*%d=%d17	err = client.Call("Arith.Divide", args, &quo)18	if err != nil {19		fmt.Println("Error in Arith.Divide:", err)20	}21	fmt.Printf("Arith: %d/%d=%d remainder %d22}23import (24type Arith struct {25}26type Args struct {27}28type Quotient struct {29}30func (t *Arith) Multiply(args *Args, reply *int) error {

RPCCall

Using AI Code Generation

1import (2type Args struct {3}4func main() {5	client, err := rpc.DialHTTP("tcp", "localhost:1234")6	if err != nil {7		log.Fatal("dialing:", err)8	}9	args := Args{7, 8}10	err = client.Call("Arith.Multiply", args, &reply)11	if err != nil {12		log.Fatal("arith error:", err)13	}14	fmt.Printf("Arith: %d*%d=%d15	quotient := new(Quotient)16	divCall := client.Go("Arith.Divide", args, quotient, nil)17}

RPCCall

Using AI Code Generation

1import (2type Args struct {3}4type Quotient struct {5}6func (t *Arith) Multiply(args *Args, reply *int) error {7}8func (t *Arith) Divide(args *Args, quo *Quotient) error {9    if args.B == 0 {10        return fmt.Errorf("divide by zero")11    }12}13func main() {14    server := rpc.NewServer()15    arith := new(Arith)16    server.Register(arith)17    l, e := net.Listen("tcp", ":1234")18    if e != nil {19        log.Fatal("listen error:", e)20    }21    go server.Accept(l)22    time.Sleep(1000 * time.Millisecond)23    client, err := rpc.Dial("tcp", "

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