func recvName(sock mangos.Socket, name string) {
var msg []byte
var err error
if msg, err = sock.Recv(); err == nil {
fmt.Printf("%s: RECEIVED: \"%s\"\n", name, string(msg))
}
}
func (t *inprocTran) NewListener(addr string, sock mangos.Socket) (mangos.PipeListener, error) {
if _, err := mangos.StripScheme(t, addr); err != nil {
return nil, err
}
l := &listener{addr: addr, proto: sock.GetProtocol()}
return l, nil
}
func replyLoop(sock mangos.Socket) {
if sendData == nil {
fatalf("No data to send!")
}
for {
msg, err := sock.RecvMsg()
switch err {
case mangos.ErrRecvTimeout:
return
case nil:
default:
fatalf("RecvMsg failed: %v", err)
}
printMsg(msg)
msg.Free()
msg = mangos.NewMessage(len(sendData))
msg.Body = append(msg.Body, sendData...)
err = sock.SendMsg(msg)
if err != nil {
fatalf("SendMsg failed: %v", err)
}
}
}
func sendRecv(sock mangos.Socket, name string) {
for {
sock.SetOption(mangos.OptionRecvDeadline, 100*time.Millisecond)
recvName(sock, name)
time.Sleep(time.Second)
sendName(sock, name)
}
}
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())
}
}
}
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 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 (t wsTran) NewListener(addr string, sock mangos.Socket) (mangos.PipeListener, error) {
proto := sock.GetProtocol()
l, e := t.listener(addr, proto)
if e == nil {
if v, e := sock.GetOption(mangos.OptionMaxRecvSize); e == nil {
l.maxrx = v.(int)
}
l.mux.Handle(l.url.Path, l)
}
return l, e
}
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 (wsTran) NewDialer(addr string, sock mangos.Socket) (mangos.PipeDialer, error) {
iswss := strings.HasPrefix(addr, "wss://")
opts := make(map[string]interface{})
opts[mangos.OptionNoDelay] = true
opts[mangos.OptionKeepAlive] = true
proto := sock.GetProtocol()
maxrx := 0
if v, e := sock.GetOption(mangos.OptionMaxRecvSize); e == nil {
maxrx = v.(int)
}
return &dialer{addr: addr, proto: proto, iswss: iswss, opts: opts, maxrx: maxrx}, nil
}
func recvLoop(sock mangos.Socket) {
for {
msg, err := sock.RecvMsg()
switch err {
case mangos.ErrProtoState:
return
case mangos.ErrRecvTimeout:
return
case nil:
default:
fatalf("RecvMsg failed: %v", err)
}
printMsg(msg)
msg.Free()
}
}
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 sendLoop(sock mangos.Socket) {
if sendData == nil {
fatalf("No data to send!")
}
for {
msg := mangos.NewMessage(len(sendData))
msg.Body = append(msg.Body, sendData...)
err := sock.SendMsg(msg)
if err != nil {
fatalf("SendMsg failed: %v", err)
}
if sendInterval >= 0 {
time.Sleep(time.Duration(sendInterval) * time.Second)
} else {
break
}
}
}
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 serverWorker(sock mangos.Socket, id int) {
var err error
delay := rand.Intn(int(time.Second))
for {
var m *mangos.Message
if m, err = sock.RecvMsg(); err != nil {
return
}
m.Body = make([]byte, 4)
time.Sleep(time.Duration(delay))
binary.BigEndian.PutUint32(m.Body[0:], uint32(id))
if err = sock.SendMsg(m); err != nil {
return
}
}
}
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 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 sendRecvLoop(sock mangos.Socket) {
for {
msg := mangos.NewMessage(len(sendData))
msg.Body = append(msg.Body, sendData...)
err := sock.SendMsg(msg)
if err != nil {
fatalf("SendMsg failed: %v", err)
}
if sendInterval < 0 {
recvLoop(sock)
return
}
now := time.Now()
// maximum wait time is upper bound of recvTimeout and
// sendInterval
if recvTimeout < 0 || recvTimeout > sendInterval {
sock.SetOption(mangos.OptionRecvDeadline,
time.Second*time.Duration(sendInterval))
}
msg, err = sock.RecvMsg()
switch err {
case mangos.ErrRecvTimeout:
case nil:
printMsg(msg)
msg.Free()
default:
fatalf("RecvMsg failed: %v", err)
}
time.Sleep((time.Second * time.Duration(sendInterval)) -
time.Now().Sub(now))
}
}
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()
}
// 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 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 {
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))
}
}
}
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()
}
func (t *inprocTran) NewDialer(addr string, sock mangos.Socket) (mangos.PipeDialer, error) {
if _, err := mangos.StripScheme(t, addr); err != nil {
return nil, err
}
return &dialer{addr: addr, proto: sock.GetProtocol()}, nil
}
func sendName(sock mangos.Socket, name string) {
fmt.Printf("%s: SENDING \"%s\"\n", name, name)
if err := sock.Send([]byte(name)); err != nil {
die("failed sending: %s", err)
}
}