func main() {
var iaddr string
flag.StringVar(&iaddr, "iaddr", "tcp://localhost:5555", "input data port")
var oaddr string
flag.StringVar(&oaddr, "oaddr", "tcp://localhost:5556", "output data port")
flag.Parse()
isck, err := pull.NewSocket()
if err != nil {
log.Fatalf("error creating a nanomsg socket: %v\n", err)
}
defer isck.Close()
isck.AddTransport(ipc.NewTransport())
isck.AddTransport(tcp.NewTransport())
osck, err := push.NewSocket()
if err != nil {
log.Fatalf("error creating output port: %v\n", err)
}
defer osck.Close()
osck.AddTransport(ipc.NewTransport())
osck.AddTransport(tcp.NewTransport())
log.Printf("dialing %s ...\n", iaddr)
err = isck.Dial(iaddr)
if err != nil {
log.Fatalf("error dialing: %v\n", err)
}
log.Printf("dialing %s ... [done]\n", iaddr)
log.Printf("dialing %s ...\n", oaddr)
err = osck.Dial(oaddr)
if err != nil {
log.Fatalf("error dialing: %v\n", err)
}
log.Printf("dialing %s ... [done]\n", oaddr)
for {
msg, err := isck.Recv()
if err != nil {
if err == io.EOF || err == mangos.ErrClosed {
log.Printf("received EOF: %v\n", err)
break
}
log.Fatalf("error receiving data: %v\n", err)
}
log.Printf("recv: %v\n", string(msg))
omsg := bytes.Repeat(msg, 2)
err = osck.Send(omsg)
if err != nil {
log.Fatalf("error sending data: %v\n", err)
}
}
}
func server(url string) {
var sock mangos.Socket
var err error
var msg []byte
if sock, err = surveyor.NewSocket(); err != nil {
die("can't get new surveyor socket: %s", err)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Listen(url); err != nil {
die("can't listen on surveyor socket: %s", err.Error())
}
err = sock.SetOption(mangos.OptionSurveyTime, time.Second/2)
if err != nil {
die("SetOption(): %s", err.Error())
}
for {
time.Sleep(time.Second)
fmt.Println("SERVER: SENDING DATE SURVEY REQUEST")
if err = sock.Send([]byte("DATE")); err != nil {
die("Failed sending survey: %s", err.Error())
}
for {
if msg, err = sock.Recv(); err != nil {
break
}
fmt.Printf("SERVER: RECEIVED \"%s\" SURVEY RESPONSE\n",
string(msg))
}
fmt.Println("SERVER: SURVEY OVER")
}
}
func main() {
var addr string
flag.StringVar(&addr, "addr", "tcp://localhost:5555", "input data port")
flag.Parse()
sck, err := pull.NewSocket()
if err != nil {
log.Fatalf("error creating a nanomsg socket: %v\n", err)
}
defer sck.Close()
sck.AddTransport(ipc.NewTransport())
sck.AddTransport(tcp.NewTransport())
log.Printf("dialing %s ...\n", addr)
err = sck.Dial(addr)
if err != nil {
log.Fatalf("error dialing: %v\n", err)
}
log.Printf("dialing %s ... [done]\n", addr)
for {
msg, err := sck.Recv()
if err != nil {
if err == io.EOF || err == mangos.ErrClosed {
log.Printf("received EOF: %v\n", err)
break
}
log.Fatalf("error receiving from bus: %v\n", err)
}
log.Printf("recv: %v\n", string(msg))
}
}
func server(url string, nworkers int) {
var sock mangos.Socket
var err error
var wg sync.WaitGroup
rand.Seed(time.Now().UnixNano())
if sock, err = rep.NewSocket(); err != nil {
die("can't get new rep socket: %s", err)
}
if err = sock.SetOption(mangos.OptionRaw, true); err != nil {
die("can't set raw mode: %s", err)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Listen(url); err != nil {
die("can't listen on rep socket: %s", err.Error())
}
wg.Add(nworkers)
fmt.Printf("Starting %d workers\n", nworkers)
for id := 0; id < nworkers; id++ {
go func(id int) {
defer wg.Done()
serverWorker(sock, id)
}(id)
}
wg.Wait()
}
func newBusNode(addr string) (busNode, error) {
var err error
var node busNode
sock, err := bus.NewSocket()
if err != nil {
return node, err
}
node.sock = sock
node.sock.AddTransport(ipc.NewTransport())
node.sock.AddTransport(tcp.NewTransport())
err = node.sock.Listen("tcp://127.0.0.1:0")
if err != nil {
return node, err
}
err = node.sock.Dial(addr)
if err != nil {
return node, err
}
return node, err
}
func node0(url string) {
var sock mangos.Socket
var err error
var msg []byte
if sock, err = rep.NewSocket(); err != nil {
die("can't get new rep socket: %s", err)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Listen(url); err != nil {
die("can't listen on rep socket: %s", err.Error())
}
for {
// Could also use sock.RecvMsg to get header
msg, err = sock.Recv()
if string(msg) == "DATE" { // no need to terminate
fmt.Println("NODE0: RECEIVED DATE REQUEST")
d := date()
fmt.Printf("NODE0: SENDING DATE %s\n", d)
err = sock.Send([]byte(d))
if err != nil {
die("can't send reply: %s", err.Error())
}
}
}
}
func client(url string, name string) {
var sock mangos.Socket
var err error
var msg []byte
if sock, err = sub.NewSocket(); err != nil {
die("can't get new sub socket: %s", err.Error())
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Dial(url); err != nil {
die("can't dial on sub socket: %s", err.Error())
}
// Empty byte array effectively subscribes to everything
err = sock.SetOption(mangos.OptionSubscribe, []byte(""))
if err != nil {
die("cannot subscribe: %s", err.Error())
}
for {
if msg, err = sock.Recv(); err != nil {
die("Cannot recv: %s", err.Error())
}
fmt.Printf("CLIENT(%s): RECEIVED %s\n", name, string(msg))
}
}
func testDevLoop(t *testing.T, addr string) {
s1, err := pair.NewSocket()
if err != nil {
t.Errorf("Failed to open S1: %v", err)
return
}
defer s1.Close()
s1.AddTransport(tcp.NewTransport())
s1.AddTransport(inproc.NewTransport())
s1.AddTransport(ipc.NewTransport())
s1.AddTransport(tlstcp.NewTransport())
s1.AddTransport(ws.NewTransport())
s1.AddTransport(wss.NewTransport())
options := make(map[string]interface{})
if strings.HasPrefix(addr, "wss://") || strings.HasPrefix(addr, "tls+tcp://") {
options[mangos.OptionTLSConfig] = srvCfg
}
if err := s1.ListenOptions(addr, options); err != nil {
t.Errorf("Failed listening to %s: %v", addr, err)
return
}
if err := mangos.Device(s1, s1); err != nil {
t.Errorf("Device failed: %v", err)
return
}
RunTests(t, addr, deviceCaseClient())
}
func client(url string, name string) {
var sock mangos.Socket
var err error
var msg []byte
if sock, err = respondent.NewSocket(); err != nil {
die("can't get new respondent socket: %s", err.Error())
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Dial(url); err != nil {
die("can't dial on respondent socket: %s", err.Error())
}
for {
if msg, err = sock.Recv(); err != nil {
die("Cannot recv: %s", err.Error())
}
fmt.Printf("CLIENT(%s): RECEIVED \"%s\" SURVEY REQUEST\n",
name, string(msg))
d := date()
fmt.Printf("CLIENT(%s): SENDING DATE SURVEY RESPONSE\n", name)
if err = sock.Send([]byte(d)); err != nil {
die("Cannot send: %s", err.Error())
}
}
}
// AddTransports adds all known transports to the given socket.
func AddTransports(sock mangos.Socket) {
sock.AddTransport(tcp.NewTransport())
sock.AddTransport(inproc.NewTransport())
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tlstcp.NewTransport())
sock.AddTransport(ws.NewTransport())
sock.AddTransport(wss.NewTransport())
}
func newSocket() mangos.Socket {
socket, err := pair.NewSocket()
if err != nil {
log.Fatalf("Node %s: Cannot create socket: %s\n", node, err.Error())
}
socket.AddTransport(ipc.NewTransport())
socket.AddTransport(tcp.NewTransport())
socket.SetOption(mangos.OptionRecvDeadline, 10*time.Second)
return socket
}
func testDevChain(t *testing.T, addr1 string, addr2 string, addr3 string) {
// This tests using multiple devices across a few transports.
// It looks like this: addr1->addr2->addr3 <==> addr3->addr2->addr1
var err error
s := make([]mangos.Socket, 5)
for i := 0; i < 5; i++ {
if s[i], err = pair.NewSocket(); err != nil {
t.Errorf("Failed to open S1_1: %v", err)
return
}
defer s[i].Close()
s[i].AddTransport(tcp.NewTransport())
s[i].AddTransport(inproc.NewTransport())
s[i].AddTransport(tlstcp.NewTransport())
s[i].AddTransport(ipc.NewTransport())
s[i].AddTransport(ws.NewTransport())
}
if err = s[0].Listen(addr1); err != nil {
t.Errorf("s[0] Listen: %v", err)
return
}
if err = s[1].Dial(addr2); err != nil {
t.Errorf("s[1] Dial: %v", err)
return
}
if err = s[2].Listen(addr2); err != nil {
t.Errorf("s[2] Listen: %v", err)
return
}
if err = s[3].Dial(addr3); err != nil {
t.Errorf("s[3] Dial: %v", err)
return
}
if err = s[4].Listen(addr3); err != nil {
t.Errorf("s[4] Listen: %v", err)
return
}
if err = mangos.Device(s[0], s[1]); err != nil {
t.Errorf("s[0],s[1] Device: %v", err)
return
}
if err = mangos.Device(s[2], s[3]); err != nil {
t.Errorf("s[2],s[3] Device: %v", err)
return
}
if err = mangos.Device(s[4], nil); err != nil {
t.Errorf("s[4] Device: %v", err)
return
}
RunTests(t, addr1, deviceCaseClient())
}
func node0(url string) {
var sock mangos.Socket
var err error
if sock, err = pair.NewSocket(); err != nil {
die("can't get new pair socket: %s", err)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Listen(url); err != nil {
die("can't listen on pair socket: %s", err.Error())
}
sendRecv(sock, "node0")
}
func newSocket(url, protocol string) (sock mangos.Socket, err error) {
var str string
switch protocol {
case "bus":
sock, err = bus.NewSocket()
str = "bus.NewSocket: "
case "pair":
sock, err = pair.NewSocket()
str = "pair.NewSocket: "
case "push":
sock, err = push.NewSocket()
str = "push.NewSocket: "
case "pull":
sock, err = pull.NewSocket()
str = "pull.NewSocket: "
case "pub":
sock, err = pub.NewSocket()
str = "pub.NewSocket: "
case "sub":
sock, err = sub.NewSocket()
str = "sub.NewSocket: "
case "request":
sock, err = req.NewSocket()
str = "request.NewSocket: "
case "reply":
sock, err = rep.NewSocket()
str = "reply.NewSocket: "
case "surveyor":
sock, err = surveyor.NewSocket()
str = "surveyor.NewSocket: "
case "respondent":
sock, err = respondent.NewSocket()
str = "respondent.NewSocket: "
}
if err != nil {
s := fmt.Sprintf(str+" %s", err)
return nil, errors.New(s)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
return sock, nil
}
func node1(url string, msg string) {
var sock mangos.Socket
var err error
if sock, err = push.NewSocket(); err != nil {
die("can't get new push socket: %s", err.Error())
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Dial(url); err != nil {
die("can't dial on push socket: %s", err.Error())
}
fmt.Printf("NODE1: SENDING \"%s\"\n", msg)
if err = sock.Send([]byte(msg)); err != nil {
die("can't send message on push socket: %s", err.Error())
}
sock.Close()
}
func node0(url string) {
var sock mangos.Socket
var err error
var msg []byte
if sock, err = pull.NewSocket(); err != nil {
die("can't get new pull socket: %s", err)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Listen(url); err != nil {
die("can't listen on pull socket: %s", err.Error())
}
for {
// Could also use sock.RecvMsg to get header
msg, err = sock.Recv()
fmt.Printf("NODE0: RECEIVED \"%s\"\n", msg)
}
}
func (b *sysbus) init() error {
sck, err := bus.NewSocket()
if err != nil {
b.Errorf("error creating a nanomsg socket: %v\n", err)
return err
}
b.sck = sck
b.sck.AddTransport(ipc.NewTransport())
b.sck.AddTransport(tcp.NewTransport())
err = b.sck.Listen(BusAddr)
if err != nil {
return err
}
return err
}
func server(url string) {
var sock mangos.Socket
var err error
if sock, err = pub.NewSocket(); err != nil {
die("can't get new pub socket: %s", err)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Listen(url); err != nil {
die("can't listen on pub socket: %s", err.Error())
}
for {
// Could also use sock.RecvMsg to get header
d := date()
fmt.Printf("SERVER: PUBLISHING DATE %s\n", d)
if err = sock.Send([]byte(d)); err != nil {
die("Failed publishing: %s", err.Error())
}
time.Sleep(time.Second)
}
}
func node(args []string) {
var sock mangos.Socket
var err error
var msg []byte
var x int
if sock, err = bus.NewSocket(); err != nil {
die("bus.NewSocket: %s", err)
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Listen(args[2]); err != nil {
die("sock.Listen: %s", err.Error())
}
// wait for everyone to start listening
time.Sleep(time.Second)
for x = 3; x < len(args); x++ {
if err = sock.Dial(args[x]); err != nil {
die("socket.Dial: %s", err.Error())
}
}
// wait for everyone to join
time.Sleep(time.Second)
fmt.Printf("%s: SENDING '%s' ONTO BUS\n", args[1], args[1])
if err = sock.Send([]byte(args[1])); err != nil {
die("sock.Send: %s", err.Error())
}
for {
if msg, err = sock.Recv(); err != nil {
die("sock.Recv: %s", err.Error())
}
fmt.Printf("%s: RECEIVED \"%s\" FROM BUS\n", args[1],
string(msg))
}
}
func clientWorker(url string, id int) {
var sock mangos.Socket
var m *mangos.Message
var err error
if sock, err = req.NewSocket(); err != nil {
die("can't get new req socket: %s", err.Error())
}
// Leave this in Cooked mode!
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Dial(url); err != nil {
die("can't dial on req socket: %s", err.Error())
}
// send an empty messsage
m = mangos.NewMessage(1)
if err = sock.SendMsg(m); err != nil {
die("can't send request: %s", err.Error())
}
if m, err = sock.RecvMsg(); err != nil {
die("can't recv reply: %s", err.Error())
}
sock.Close()
if len(m.Body) != 4 {
die("bad response len: %d", len(m.Body))
}
worker := binary.BigEndian.Uint32(m.Body[0:])
L.Lock()
fmt.Printf("Client: %4d Server: %4d\n", id, worker)
L.Unlock()
}
func node1(url string) {
var sock mangos.Socket
var err error
var msg []byte
if sock, err = req.NewSocket(); err != nil {
die("can't get new req socket: %s", err.Error())
}
sock.AddTransport(ipc.NewTransport())
sock.AddTransport(tcp.NewTransport())
if err = sock.Dial(url); err != nil {
die("can't dial on req socket: %s", err.Error())
}
fmt.Printf("NODE1: SENDING DATE REQUEST %s\n", "DATE")
if err = sock.Send([]byte("DATE")); err != nil {
die("can't send message on push socket: %s", err.Error())
}
if msg, err = sock.Recv(); err != nil {
die("can't receive date: %s", err.Error())
}
fmt.Printf("NODE1: RECEIVED DATE %s\n", string(msg))
sock.Close()
}