Esempio n. 1
0
func (srv *LspServer) loopServe() {
	var closeAllReply chan error
	for {
		select {
		case p := <-srv.netReadChan:
			srv.handleUdpPacket(p)
		case msg := <-srv.appWriteChan:
			if conn := srv.getConnById(msg.ConnId); conn != nil {
				conn.sendChan <- msg
			}
		case id := <-srv.closeChan:
			if conn := srv.getConnById(id); conn != nil {
				conn.closeChan <- nil
			}
		case closeAllReply = <-srv.closeAllChan:
			srv.stop = true
			for _, v := range srv.connMap {
				v.closeChan <- nil
			}
		case id := <-srv.removeConnChan:
			if conn := srv.getConnById(id); conn != nil {
				delete(srv.connMap, conn.addr.String())
				lsplog.Vlogf(2, "[server] remove connection: %v\n", conn.addr.String())
			}
			if srv.stop && len(srv.connMap) == 0 {
				lsplog.Vlogf(1, "[server] serve stop running\n")
				if closeAllReply != nil {
					closeAllReply <- nil
				}
				return
			}
		}
	}
}
Esempio n. 2
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func newLspClient(hostport string, params *LspParams) (*LspClient, error) {
	if params == nil {
		params = &LspParams{5, 2000}
	}
	addr, err := lspnet.ResolveUDPAddr("udp", hostport)
	if lsplog.CheckReport(1, err) {
		return nil, err
	}
	udpConn, err := lspnet.DialUDP("udp", nil, addr)
	if err != nil {
		lsplog.Vlogf(1, "[client] connect to %v failed: %v\n", addr.String(), err)
		return nil, err
	} else {
		lsplog.Vlogf(1, "[client] connected to %v\n", addr.String())
	}
	removeChan := make(chan uint16)
	appReadChan := make(chan *LspMsg)
	conn := newLspConn(params, udpConn, addr, 0, appReadChan, removeChan)
	cli := &LspClient{
		client{
			udpConn:        udpConn,
			addr:           addr,
			conn:           conn,
			netReadChan:    make(chan *LspMsg),
			appWriteChan:   make(chan *LspMsg),
			appReadChan:    appReadChan,
			connIdChan:     make(chan uint16, 1),
			removeConnChan: removeChan,
			closeChan:      make(chan error),
		},
	}
	go cli.loopServe()
	go cli.loopRead()
	return cli, nil
}
Esempio n. 3
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// Wait until server has signaled it is done
func (ts *SynchTestSystem) WaitServer() {
	lsplog.Vlogf(6, "Waiting for server\n")
	select {
	case d := <-ts.TChan:
		ts.Tester.Logf("Test reached time limit of %d waiting for server", d)
		ts.Tester.FailNow()
	case <-ts.S2MChan:
	}
	lsplog.Vlogf(6, "Got signal from server\n")
}
Esempio n. 4
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// Enable network & then Wait until it signals that it is done
func (ts *SynchTestSystem) SynchNetwork() {
	lsplog.Vlogf(6, "Enabling Network\n")
	ts.M2NChan <- true
	lsplog.Vlogf(6, "Waiting for network\n")
	select {
	case d := <-ts.TChan:
		ts.Tester.Logf("Test reached time limit of %d waiting for network", d)
		ts.Tester.FailNow()
	case <-ts.N2MChan:
	}
	lsplog.Vlogf(6, "Got signal from network\n")
}
Esempio n. 5
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// Wait until clients have that they're done
func (ts *SynchTestSystem) WaitClients() {
	lsplog.Vlogf(6, "Waiting for clients\n")
	for i := 0; i < ts.Nclients; i++ {
		select {
		case d := <-ts.TChan:
			ts.Tester.Logf("Test reached time limit of %d waiting for client", d)
			ts.Tester.FailNow()
		case <-ts.C2MChan:
		}
	}

	lsplog.Vlogf(6, "Got signals from all clients\n")
}
Esempio n. 6
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func (con *UDPConn) Write(b []byte) (int, error) {
	ncon := con.ncon
	if dropit(writeDropPercent) {
		lsplog.Vlogf(5, "UDP: DROPPING written packet of length %v\n", len(b))
		// Make it look like write was successful
		return len(b), nil
	} else {
		n, err := ncon.Write(b)
		lsplog.Vlogf(5, "UDP: Wrote packet of length %v\n", n)
		return n, err
	}
	return 0, nil
}
Esempio n. 7
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func (con *UDPConn) WriteToUDP(b []byte, addr *UDPAddr) (int, error) {
	ncon := con.ncon
	naddr := &net.UDPAddr{IP: addr.IP, Port: addr.Port}
	if dropit(writeDropPercent) {
		lsplog.Vlogf(5, "UDP: DROPPING written packet of length %v\n", len(b))
		// Make it look like write was successful
		return len(b), nil
	} else {
		n, err := ncon.WriteToUDP(b, naddr)
		lsplog.Vlogf(5, "UDP: Wrote packet of length %v", n)
		return n, err
	}
	return 0, nil
}
Esempio n. 8
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// Function to coordinate tests
func (ts *SynchTestSystem) Master() {
	// Wait until server and all clients are ready
	ts.WaitServer()
	ts.WaitClients()
	lsplog.Vlogf(4, "Server + all clients started.  Shut off network\n")
	ts.SynchNetwork()
	// Network Off
	// Enable client writes
	if ts.Mode != doservertoclient {
		ts.ReadyClients()
		ts.WaitClients()
	}
	// Do fast close of client.  The calls will not be able to complete
	if ts.Mode == doclienttoserver {
		ts.ReadyClients()
	}
	if ts.Mode != doservertoclient {
		// Turn on network and delay
		ts.SynchNetwork()
		if ts.Mode == doclienttoserver {
			ts.WaitClients()
		}
		ts.SynchNetwork()
		// Network off
		// Enable server reads
		ts.ReadyServer()
		ts.WaitServer()
	}
	// Do server writes
	if ts.Mode != doclienttoserver {
		ts.ReadyServer()
		ts.WaitServer()
	}
	// Do fast close of server.  The calls will not be able to complete
	if ts.Mode != doroundtrip {
		ts.ReadyServer()
	}
	if ts.Mode != doclienttoserver {
		// Turn on network
		ts.SynchNetwork()
		if ts.Mode != doroundtrip {
			// If did quick close, should get responses from server
			ts.WaitServer()
		}
		// Network off again
		ts.SynchNetwork()
		// Enable client reads
		ts.ReadyClients()
		ts.WaitClients()
		// Enable client closes
		ts.ReadyClients()
		ts.WaitClients()
	}
	// Final close by server
	if ts.Mode == doroundtrip {
		ts.ReadyServer()
		ts.WaitServer()
	}
	// Made it!
}
Esempio n. 9
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// Have client generate n messages and check that they are echoed.
func (ts *TestSystem) runclient(clienti int) {
	if clienti > ts.NClients {
		ts.Tester.Logf("Invalid client number %d\n", clienti)
		ts.Tester.FailNow()
	}
	cli := ts.Clients[clienti]
	for i := 0; i < ts.NMessages && ts.RunFlag; i++ {
		wt := ts.Rgen.Intn(100)
		werr := cli.Write(i2b(i + wt))
		if werr != nil {
			ts.Tester.Logf("Client write got error '%s'\n",
				werr.Error())
			ts.RunFlag = false
			ts.Tester.FailNow()
		}

		b := cli.Read()
		if b == nil {
			ts.Tester.Logf("Client read got error\n")
			ts.RunFlag = false
			ts.Tester.FailNow()
		}
		v := b2i(b)
		if v != wt+i {
			ts.Tester.Logf("Client got %d.  Expected %d\n",
				v, i+wt)
			ts.RunFlag = false
			ts.Tester.FailNow()
		}
	}
	cli.Close()
	lsplog.Vlogf(0, "Client #%d completed %d messages\n", clienti, ts.NMessages)
	ts.CChan <- 0
}
Esempio n. 10
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func (ts *TestSystem) runtest(timeoutms int) {
	lspnet.SetWriteDropPercent(ts.DropPercent)
	if ts.Description != "" {
		fmt.Printf("Testing: %s\n", ts.Description)
	}
	go ts.runserver()
	for i := 0; i < ts.NClients; i++ {
		go ts.runclient(i)
	}
	go ts.runtimeout(timeoutms)
	for i := 0; i < ts.NClients; i++ {
		v := <-ts.CChan
		if v < 0 {
			ts.RunFlag = false
			ts.Tester.Logf("Test timed out after %f secs\n",
				float64(timeoutms)/1000.0)
			ts.Tester.FailNow()
		}
	}
	ts.RunFlag = false
	lsplog.Vlogf(0, "Passed: %d clients, %d messages/client, %.2f maxsleep, %.2f drop rate\n",
		ts.NClients, ts.NMessages,
		float64(ts.MaxSleepMilliseconds)/1000.0,
		float64(ts.DropPercent)/100.0)
	lsplog.SetVerbose(DefaultVerbosity)
	lspnet.SetWriteDropPercent(0)
}
Esempio n. 11
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func (conn *lspConn) udpWrite(msg *LspMsg) {
	result, err := json.Marshal(msg)
	if err != nil {
		lsplog.Vlogf(3, "[conn] Marshal failed: %s\n", err.Error())
		return
	}
	switch conn.whichSide {
	case ClientSide:
		_, err = conn.udpConn.Write(result)
	case ServerSide:
		_, err = conn.udpConn.WriteToUDP(result, conn.addr)
	}
	if err != nil {
		lsplog.Vlogf(3, "[conn] udpWrite failed: %s\n", err.Error())
	}
}
Esempio n. 12
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func newLspServer(port int, params *LspParams) (*LspServer, error) {
	if params == nil {
		params = &LspParams{5, 2000}
	}
	hostport := fmt.Sprintf("localhost:%v", port)
	addr, err := lspnet.ResolveUDPAddr("udp", hostport)
	if lsplog.CheckReport(1, err) {
		return nil, err
	}
	udpconn, err := lspnet.ListenUDP("udp", addr)
	if lsplog.CheckReport(1, err) {
		return nil, err
	} else {
		lsplog.Vlogf(1, "[server] listen on %v\n", addr.String())
	}
	srv := &LspServer{
		server{
			nextConnId:     1,
			params:         params,
			connMap:        make(map[string]*lspConn),
			udpConn:        udpconn,
			udpAddr:        addr,
			netReadChan:    make(chan *udpPacket),
			appWriteChan:   make(chan *LspMsg),
			appReadChan:    make(chan *LspMsg),
			closeChan:      make(chan uint16),
			closeAllChan:   make(chan chan error),
			removeConnChan: make(chan uint16),
		},
	}
	go srv.loopServe()
	go srv.loopRead()
	return srv, nil
}
Esempio n. 13
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func NewLspClient(hostport string, params *LspParams) (*LspClient, error) {
	cli, err := newLspClient(hostport, params)
	if err != nil {
		lsplog.Vlogf(1, "[client] create failure: %v", err)
		return nil, err
	}
	return cli, nil
}
Esempio n. 14
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func (con *UDPConn) ReadFromUDP(b []byte) (n int, addr *UDPAddr, err error) {
	var buffer [2000]byte
	ncon := con.ncon
	var naddr *net.UDPAddr
	n, naddr, err = ncon.ReadFromUDP(buffer[0:])
	if dropit(readDropPercent) {
		lsplog.Vlogf(5, "UDP: DROPPING read packet of length %v\n", n)
	} else {
		lsplog.Vlogf(6, "UDP: Read packet of length %v\n", n)
		copy(b, buffer[0:])
	}
	if naddr == nil {
		addr = nil
	} else {
		addr = &UDPAddr{IP: naddr.IP, Port: naddr.Port}
	}
	return n, addr, err
}
Esempio n. 15
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// Turn network off and on
func (ts *SynchTestSystem) RunNetwork() {
	// Network initially on
	lspnet.SetWriteDropPercent(0)
	for ts.RunFlag {
		lsplog.Vlogf(4, "Network running.  Waiting for master\n")
		<-ts.M2NChan
		lsplog.Vlogf(4, "Turning off network\n")
		lspnet.SetWriteDropPercent(100)
		ts.N2MChan <- true

		lsplog.Vlogf(4, "Network off.  Waiting for master\n")
		<-ts.M2NChan
		lsplog.Vlogf(4, "Turning network on and delaying\n")
		lspnet.SetWriteDropPercent(0)
		ts.N2MChan <- true
		ts.synchdelay(2.0)
	}
	lsplog.Vlogf(4, "Network handler exiting\n")
}
Esempio n. 16
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func (cli *LspClient) loopRead() {
	conn := cli.udpConn
	var buf [2000]byte
	for {
		n, _, err := conn.ReadFromUDP(buf[0:])
		if err != nil {
			lsplog.Vlogf(3, "[client] ReadFromUDP error: %s\n", err.Error())
			continue
		}
		var msg LspMsg
		err = json.Unmarshal(buf[0:n], &msg)
		if err != nil {
			lsplog.Vlogf(3, "[client] Unmarshal error: %s\n", err.Error())
			continue
		}
		cli.netReadChan <- &msg
		lsplog.Vlogf(5, "[client] received udp packet\n")
	}
}
Esempio n. 17
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func (conn *lspConn) receive(msg *LspMsg) {
	switch msg.Type {
	case MsgDATA:
		if msg.SeqNum == conn.nextRecvSeqNum {
			conn.recvBuf.Insert(msg)
			conn.nextRecvSeqNum++
			conn.lastAck = genAckMsg(conn.connId, msg.SeqNum)
			// conn.send(conn.lastAck)
		} else {
			lsplog.Vlogf(4, "[conn] ignore data, connId=%v, seqnum=%v, expected=%v\n",
				conn.connId, msg.SeqNum, conn.nextRecvSeqNum)
		}
		conn.udpWrite(conn.lastAck)
	case MsgACK:
		if conn.sendBuf.Empty() {
			lsplog.Vlogf(4, "[conn] ignore ack, nothing to send\n")
			return
		}
		b, _ := conn.sendBuf.Front()
		expect := b.(*LspMsg)
		if msg.SeqNum == expect.SeqNum {
			conn.sendBuf.Remove()
			if msg.SeqNum == 0 {
				conn.connId = msg.ConnId
				lsplog.Vlogf(2, "[conn] connection confirmed, ConnId=%v\n", conn.connId)
			}
			if !conn.sendBuf.Empty() {
				r, _ := conn.sendBuf.Front()
				m := r.(*LspMsg)
				conn.udpWrite(m)
			}
		} else {
			conn.udpWrite(expect)
			lsplog.Vlogf(4, "[conn] ignore ack, ConnId=%v, seqnum=%v, expected=%v\n",
				conn.connId, msg.SeqNum, expect.SeqNum)
		}
		if conn.sendBuf.Empty() && conn.closed {
			conn.writeDone <- nil
		}
	}
}
Esempio n. 18
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func (srv *LspServer) handleUdpPacket(p *udpPacket) {
	msg := p.msg
	addr := p.addr
	hostport := addr.String()
	conn := srv.connMap[hostport]
	switch msg.Type {
	case MsgCONNECT:
		if conn != nil {
			lsplog.Vlogf(5, "[server] Duplicate connect request from: %s\n", hostport)
			return
		}
		conn = newLspConn(srv.params, srv.udpConn, addr,
			srv.nextConnId, srv.appReadChan, srv.removeConnChan)
		srv.nextConnId++
		srv.connMap[hostport] = conn
	case MsgDATA:
		conn.recvChan <- msg
	case MsgACK:
		conn.recvChan <- msg
	default:
		lsplog.Vlogf(5, "[server] Invalid packet, hostport=%v\n", hostport)
	}
}
Esempio n. 19
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func (srv *LspServer) loopRead() {
	conn := srv.udpConn
	var buf [2000]byte
	for {
		n, addr, err := conn.ReadFromUDP(buf[0:])
		if err != nil {
			lsplog.Vlogf(3, "[server] ReadFromUDP error: %s\n", err.Error())
			continue
		}
		var msg LspMsg
		err = json.Unmarshal(buf[0:n], &msg)
		if err != nil {
			lsplog.Vlogf(3, "[server] Unmarshal error: %s\n", err.Error())
			continue
		}
		packet := &udpPacket{
			msg:  &msg,
			addr: addr,
		}
		srv.netReadChan <- packet
		lsplog.Vlogf(5, "[server] received udp packet\n")
	}
}
Esempio n. 20
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func runserver(srv *lsp.LspServer) {
	for {
		// Read from client
		id, payload, rerr := srv.Read()
		if rerr != nil {
			fmt.Printf("Connection %d has died.  Error message %s\n", id, rerr.Error())
		} else {
			s := string(payload)
			lsplog.Vlogf(6, "Connection %d.  Received '%s'\n", id, s)
			payload = []byte(strings.ToUpper(s))
			// Echo back to client
			srv.Write(id, payload)
		}
	}
}
Esempio n. 21
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func (cli *LspClient) loopServe() {
	var connid uint16 = 0
	for {
		select {
		case msg := <-cli.netReadChan:
			cli.conn.recvChan <- msg
			if connid == 0 {
				connid = msg.ConnId
				cli.connIdChan <- connid
			}
		case msg := <-cli.appWriteChan:
			cli.conn.sendChan <- msg
		case <-cli.removeConnChan:
			lsplog.Vlogf(1, "[client] exit\n")
			return
		case <-cli.closeChan:
			cli.closeChan <- nil
		}
	}
}
Esempio n. 22
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func (conn *lspConn) serve() {
	params := conn.params
	interval := time.Duration(params.EpochMilliseconds) * time.Millisecond
	timeout := time.After(interval)
	for {
		var first *LspMsg
		var readChan chan<- *LspMsg
		if !conn.recvBuf.Empty() {
			b, _ := conn.recvBuf.Front()
			first = b.(*LspMsg)
			readChan = conn.readChan
		}
		select {
		case msg := <-conn.sendChan:
			if !conn.closed {
				conn.send(msg)
			} else {
				lsplog.Vlogf(2, "connection already closed, ignore send msg")
			}
		case msg := <-conn.recvChan:
			conn.lastTime = time.Now()
			conn.receive(msg)
		case readChan <- first:
			conn.recvBuf.Remove()
		case <-conn.closeChan:
			conn.closed = true
		case <-timeout:
			if conn.epochTrigger() {
				timeout = time.After(interval)
			} else {
				return
			}
		case <-conn.writeDone:
			conn.removeChan <- conn.connId
			return
		}
	}
}
Esempio n. 23
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// Time Out test
func (ts *SynchTestSystem) RunTimeout(epochfraction float64) {
	lsplog.Vlogf(6, "Setting test to timeout after %.2f epochs\n", epochfraction)
	ts.synchdelay(epochfraction)
	ts.RunFlag = false
	ts.TChan <- int(epochfraction)
}
Esempio n. 24
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func NewAuxTestSystem(t *testing.T, nclients int, mode int, maxepochs int,
	params *LspParams) {
	fmt.Printf("Testing: Mode %s, %d clients\n", ModeName[mode], nclients)
	ts := new(AuxTestSystem)
	ts.Mode = mode
	ts.Params = params
	ts.ClientChan = make(chan bool)
	ts.ServerChan = make(chan bool)
	ts.TimeChan = make(chan bool)
	ts.Clients = make([]*LspClient, nclients)
	ts.Nclients = nclients
	ts.Nmessages = 10
	ts.Rgen = *rand.New(rand.NewSource(time.Now().Unix()))
	ts.Port = randport(ts.Rgen)
	ts.RunFlag = true
	ts.Tester = t
	go ts.BuildServer()
	for i := 0; i < nclients; i++ {
		go ts.BuildClient(i)
	}
	go ts.runtimeout(float64(maxepochs))

	switch ts.Mode {
	case doclientstop:
		// Wait for server or timer to complete
		select {
		case sok := <-ts.ServerChan:
			if !sok {
				ts.Tester.Logf("Server error\n")
				ts.Tester.FailNow()
			}
		case <-ts.TimeChan:
			ts.Tester.Logf("Test timed out waiting for server\n")
			ts.Tester.FailNow()
		}
		lsplog.Vlogf(0, "Server completed\n")
		// Wait for the clients
		for i := 0; i < nclients; i++ {
			select {
			case c*k := <-ts.ClientChan:
				if !c*k {
					ts.Tester.Logf("Client error\n")
					ts.Tester.FailNow()
				}
			case <-ts.TimeChan:
				ts.Tester.Logf("Test timed out waiting for client\n")
				ts.Tester.FailNow()
			}
		}
		lsplog.Vlogf(0, "Clients completed\n")
	default: // Includes stopserver
		// Wait for the clients
		for i := 0; i < nclients; i++ {
			select {
			case c*k := <-ts.ClientChan:
				if !c*k {
					ts.Tester.Logf("Client error\n")
					ts.Tester.FailNow()
				}
			case <-ts.TimeChan:
				ts.Tester.Logf("Test timed out waiting for client\n")
				ts.Tester.FailNow()
			}
		}
		// Wait for server or timer to complete
		select {
		case sok := <-ts.ServerChan:
			if !sok {
				ts.Tester.Logf("Server error\n")
				ts.Tester.FailNow()
			}
		case <-ts.TimeChan:
			ts.Tester.Logf("Test timed out waiting for server\n")
			ts.Tester.FailNow()
		}
	}
	lsplog.SetVerbose(AuxDefaultVerbosity)
}
Esempio n. 25
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func (srv *LspServer) closeAll() {
	err := make(chan error)
	srv.closeAllChan <- err
	<-err
	lsplog.Vlogf(1, "[server] all connection closed\n")
}
Esempio n. 26
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// Create server and and run test
func (ts *SynchTestSystem) RunServer() {
	var err error
	ts.Server, err = NewLspServer(ts.Port, ts.Params)
	if err != nil {
		ts.Tester.Logf("Couldn't create server on port %d\n", ts.Port)
		ts.Tester.FailNow()
	}
	lsplog.Vlogf(1, "Server created on port %d\n", ts.Port)
	ts.S2MChan <- true
	// Read
	if ts.Mode != doservertoclient {
		lsplog.Vlogf(4, "Server waiting to read\n")
		<-ts.M2SChan
		lsplog.Vlogf(3, "Server reading messages\n")
		// Receive messages from client
		// Track number received from each client
		rcvdCount := make([]int, ts.Nclients)
		n := ts.Nmessages * ts.Nclients
		for m := 0; m < n; m++ {
			id, b, err := ts.Server.Read()
			if err != nil {
				ts.Tester.Log("Server failed to read\n")
				ts.Tester.Fail()
			}
			v := synchb2i(b)
			ts.MapLock.Lock()
			clienti, found := ts.ClientMap[id]
			ts.MapLock.Unlock()
			if !found || clienti >= ts.Nclients {
				ts.Tester.Logf("Server received message from unknown client #%d\n", id)
				ts.Tester.FailNow()
			}
			rc := rcvdCount[clienti]
			if rc >= ts.Nmessages {
				ts.Tester.Logf("Server has received too many messages from client #%d\n", id)
				ts.Tester.FailNow()
			}
			ev := ts.Data[clienti][rc]
			if v != ev {
				ts.Tester.Logf("Server received element #%v, value %v from connection %v.  Expected %v\n",
					rc, v, id, ev)
				ts.Tester.Fail()
			}
			lsplog.Vlogf(6, "Server received element #%v, value %v from connection %v.  Expected %v\n",
				rc, v, id, ev)
			rcvdCount[clienti] = rc + 1
		}
		lsplog.Vlogf(3, "Server read all %v messages from clients\n", n)
		ts.S2MChan <- true
	}
	// Write
	if ts.Mode != doclienttoserver {
		lsplog.Vlogf(4, "Server waiting to write\n")
		<-ts.M2SChan
		lsplog.Vlogf(3, "Server writing messages\n")
		// Track number sent to each client
		sentCount := make([]int, ts.Nclients)
		n := ts.Nmessages * ts.Nclients
		for nsent := 0; nsent < n; {
			var clienti int
			// Choose random client
			found := false
			for !found {
				clienti = ts.Rgen.Intn(ts.Nclients)
				found = sentCount[clienti] < ts.Nmessages
			}
			id := ts.Clients[clienti].ConnId()
			sc := sentCount[clienti]
			v := ts.Data[clienti][sc]
			err := ts.Server.Write(id, synchi2b(v))
			if err != nil {
				ts.Tester.Logf("Server could not send value %v  (#%d) to client %d (ID %v)\n",
					v, sc, clienti, id)
				ts.Tester.Fail()
			}
			sentCount[clienti] = sc + 1
			nsent++
		}
		lsplog.Vlogf(3, "Server wrote all %v messages to clients\n", n)
		ts.S2MChan <- true
	}
	lsplog.Vlogf(4, "Server waiting to close\n")
	<-ts.M2SChan
	lsplog.Vlogf(4, "Server closing\n")
	ts.Server.CloseAll()
	lsplog.Vlogf(4, "Server closed\n")
	ts.S2MChan <- false
}
Esempio n. 27
0
// Create client and and run test
func (ts *SynchTestSystem) RunClient(clienti int) {
	hostport := fmt.Sprintf("localhost:%d", ts.Port)
	cli, err := NewLspClient(hostport, ts.Params)
	if err != nil {
		ts.Tester.Logf("Couldn't create client %d to server at %s\n",
			clienti, hostport)
		ts.Tester.FailNow()
	}
	ts.Clients[clienti] = cli
	id := cli.ConnId()
	ts.MapLock.Lock()
	ts.ClientMap[id] = clienti
	ts.MapLock.Unlock()
	lsplog.Vlogf(1, "Client %d created with id %d to server at %s\n",
		clienti, id, hostport)
	ts.C2MChan <- true

	// Write
	if ts.Mode != doservertoclient {
		lsplog.Vlogf(4, "Client %d (id %d) waiting to write\n", clienti, id)
		<-ts.M2CChan
		lsplog.Vlogf(3, "Client %d (id %d) writing messages\n", clienti, id)
		for nsent := 0; nsent < ts.Nmessages; nsent++ {
			v := ts.Data[clienti][nsent]
			cli.Write(synchi2b(v))
			if err != nil {
				ts.Tester.Logf("Client %d (id %d) could not send value %v\n",
					clienti, id, v)
				ts.Tester.Fail()
			}
		}
		lsplog.Vlogf(3, "Client %d (id %d) wrote all %v messages to server\n",
			clienti, id, ts.Nmessages)
		ts.C2MChan <- true
	}

	// Read
	if ts.Mode != doclienttoserver {
		lsplog.Vlogf(4, "Client %d (id %d) waiting to read\n", clienti, id)
		<-ts.M2CChan
		lsplog.Vlogf(4, "Client %d (id %d) reading messages\n", clienti, id)
		// Receive messages from server
		for nrcvd := 0; nrcvd < ts.Nmessages; nrcvd++ {
			b := cli.Read()
			if b == nil {
				ts.Tester.Logf("Client %d (id %d) failed to read value #%d\n",
					clienti, id, nrcvd)
				ts.Tester.Fail()
			}
			v := synchb2i(b)
			ev := ts.Data[clienti][nrcvd]
			if v != ev {
				ts.Tester.Logf("Client %d (id %d) received element #%v, value %v.  Expected %v\n",
					clienti, id, nrcvd, v, ev)
				ts.Tester.Fail()
			}
			lsplog.Vlogf(6, "Client %d (id %d) received element #%v, value %v.  Expected %v\n",
				clienti, id, nrcvd, v, ev)
		}
		lsplog.Vlogf(3, "Client %d (id %d) read all %v messages from servers\n",
			clienti, id, ts.Nmessages)
		ts.C2MChan <- true
	}
	lsplog.Vlogf(4, "Client %d (id %d) waiting to close\n", clienti, id)
	<-ts.M2CChan
	lsplog.Vlogf(4, "Client %d (id %d) closing\n", clienti, id)
	cli.Close()
	lsplog.Vlogf(4, "Client %d (id %d) done\n", clienti, id)
	ts.C2MChan <- false
}
Esempio n. 28
0
// Let server proceed
func (ts *SynchTestSystem) ReadyServer() {
	lsplog.Vlogf(6, "Enabling server\n")
	ts.M2SChan <- true
}
Esempio n. 29
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// Let clients proceed
func (ts *SynchTestSystem) ReadyClients() {
	lsplog.Vlogf(6, "Enabling clients\n")
	for i := 0; i < ts.Nclients; i++ {
		ts.M2CChan <- true
	}
}
Esempio n. 30
0
// Time Out test
func (ts *AuxTestSystem) runtimeout(epochfraction float64) {
	lsplog.Vlogf(6, "Setting test to timeout after %.2f epochs\n", epochfraction)
	ts.auxdelay(epochfraction)
	ts.RunFlag = false
	ts.TimeChan <- true
}