func main() {
lbbroker := &lbbroker_t{}
lbbroker.frontend, _ = zmq.NewSocket(zmq.ROUTER)
lbbroker.backend, _ = zmq.NewSocket(zmq.ROUTER)
defer lbbroker.frontend.Close()
defer lbbroker.backend.Close()
lbbroker.frontend.Bind("ipc://frontend.ipc")
lbbroker.backend.Bind("ipc://backend.ipc")
for client_nbr := 0; client_nbr < NBR_CLIENTS; client_nbr++ {
go client_task()
}
for worker_nbr := 0; worker_nbr < NBR_WORKERS; worker_nbr++ {
go worker_task()
}
// Queue of available workers
lbbroker.workers = make([]string, 0, 10)
// Prepare reactor and fire it up
lbbroker.reactor = zmq.NewReactor()
lbbroker.reactor.AddSocket(lbbroker.backend, zmq.POLLIN,
func(e zmq.State) error { return handle_backend(lbbroker) })
lbbroker.reactor.Run(-1)
}
func New(primary bool, local, remote string) (bstar *Bstar, err error) {
bstar = &Bstar{}
// Initialize the Binary Star
bstar.Reactor = zmq.NewReactor()
if primary {
bstar.state = state_PRIMARY
} else {
bstar.state = state_BACKUP
}
// Create publisher for state going to peer
bstar.statepub, err = zmq.NewSocket(zmq.PUB)
bstar.statepub.Bind(local)
// Create subscriber for state coming from peer
bstar.statesub, err = zmq.NewSocket(zmq.SUB)
bstar.statesub.SetSubscribe("")
bstar.statesub.Connect(remote)
// Set-up basic reactor events
bstar.Reactor.AddChannelTime(time.Tick(bstar_HEARTBEAT), 1,
func(i interface{}) error { return bstar.send_state() })
bstar.Reactor.AddSocket(bstar.statesub, zmq.POLLIN,
func(e zmq.State) error { return bstar.recv_state() })
return
}
func main() {
srv := &clonesrv_t{
port: 5556,
kvmap: make(map[string]*kvmsg.Kvmsg),
}
// Set up our clone server sockets
srv.snapshot, _ = zmq.NewSocket(zmq.ROUTER)
srv.snapshot.Bind(fmt.Sprint("tcp://*:", srv.port))
srv.publisher, _ = zmq.NewSocket(zmq.PUB)
srv.publisher.Bind(fmt.Sprint("tcp://*:", srv.port+1))
srv.collector, _ = zmq.NewSocket(zmq.PULL)
srv.collector.Bind(fmt.Sprint("tcp://*:", srv.port+2))
// Register our handlers with reactor
reactor := zmq.NewReactor()
reactor.AddSocket(srv.snapshot, zmq.POLLIN,
func(e zmq.State) error { return snapshots(srv) })
reactor.AddSocket(srv.collector, zmq.POLLIN,
func(e zmq.State) error { return collector(srv) })
reactor.AddChannelTime(time.Tick(1000*time.Millisecond), 1,
func(v interface{}) error { return flush_ttl(srv) })
log.Println(reactor.Run(100 * time.Millisecond)) // precision: .1 seconds
}
func Example_multiple_contexts() {
chQuit := make(chan interface{})
chReactor := make(chan bool)
addr1 := "tcp://127.0.0.1:9997"
addr2 := "tcp://127.0.0.1:9998"
serv_ctx1, err := zmq.NewContext()
if checkErr(err) {
return
}
serv1, err := serv_ctx1.NewSocket(zmq.REP)
if checkErr(err) {
return
}
err = serv1.Bind(addr1)
if checkErr(err) {
return
}
defer func() {
serv1.Close()
serv_ctx1.Term()
}()
serv_ctx2, err := zmq.NewContext()
if checkErr(err) {
return
}
serv2, err := serv_ctx2.NewSocket(zmq.REP)
if checkErr(err) {
return
}
err = serv2.Bind(addr2)
if checkErr(err) {
return
}
defer func() {
serv2.Close()
serv_ctx2.Term()
}()
new_service := func(sock *zmq.Socket, addr string) {
socket_handler := func(state zmq.State) error {
msg, err := sock.RecvMessage(0)
if checkErr(err) {
return err
}
_, err = sock.SendMessage(addr, msg)
if checkErr(err) {
return err
}
return nil
}
quit_handler := func(interface{}) error {
return errors.New("quit")
}
defer func() {
chReactor <- true
}()
reactor := zmq.NewReactor()
reactor.AddSocket(sock, zmq.POLLIN, socket_handler)
reactor.AddChannel(chQuit, 1, quit_handler)
err = reactor.Run(100 * time.Millisecond)
fmt.Println(err)
}
go new_service(serv1, addr1)
go new_service(serv2, addr2)
time.Sleep(time.Second)
// default context
sock1, err := zmq.NewSocket(zmq.REQ)
if checkErr(err) {
return
}
sock2, err := zmq.NewSocket(zmq.REQ)
if checkErr(err) {
return
}
err = sock1.Connect(addr1)
if checkErr(err) {
return
}
err = sock2.Connect(addr2)
if checkErr(err) {
return
}
_, err = sock1.SendMessage(addr1)
if checkErr(err) {
return
}
_, err = sock2.SendMessage(addr2)
if checkErr(err) {
return
}
msg, err := sock1.RecvMessage(0)
fmt.Println(err, msg)
msg, err = sock2.RecvMessage(0)
fmt.Println(err, msg)
err = sock1.Close()
if checkErr(err) {
return
}
err = sock2.Close()
if checkErr(err) {
return
}
// non-default contexts
ctx1, err := zmq.NewContext()
if checkErr(err) {
return
}
ctx2, err := zmq.NewContext()
if checkErr(err) {
return
}
sock1, err = ctx1.NewSocket(zmq.REQ)
if checkErr(err) {
return
}
sock2, err = ctx2.NewSocket(zmq.REQ)
if checkErr(err) {
return
}
err = sock1.Connect(addr1)
if checkErr(err) {
return
}
err = sock2.Connect(addr2)
if checkErr(err) {
return
}
_, err = sock1.SendMessage(addr1)
if checkErr(err) {
return
}
_, err = sock2.SendMessage(addr2)
if checkErr(err) {
return
}
msg, err = sock1.RecvMessage(0)
fmt.Println(err, msg)
msg, err = sock2.RecvMessage(0)
fmt.Println(err, msg)
err = sock1.Close()
if checkErr(err) {
return
}
err = sock2.Close()
if checkErr(err) {
return
}
err = ctx1.Term()
if checkErr(err) {
return
}
err = ctx2.Term()
if checkErr(err) {
return
}
// close(chQuit) doesn't work because the reactor removes closed channels, instead of acting on them
chQuit <- true
<-chReactor
chQuit <- true
<-chReactor
fmt.Println("Done")
// Output:
// <nil> [tcp://127.0.0.1:9997 tcp://127.0.0.1:9997]
// <nil> [tcp://127.0.0.1:9998 tcp://127.0.0.1:9998]
// <nil> [tcp://127.0.0.1:9997 tcp://127.0.0.1:9997]
// <nil> [tcp://127.0.0.1:9998 tcp://127.0.0.1:9998]
// quit
// quit
// Done
}
func Example_test_security_plain() {
time.Sleep(100 * time.Millisecond)
handler, err := zmq.NewSocket(zmq.REP)
if checkErr(err) {
return
}
err = handler.Bind("inproc://zeromq.zap.01")
if checkErr(err) {
return
}
doHandler := func(state zmq.State) error {
msg, err := handler.RecvMessage(0)
if err != nil {
return err // Terminating
}
version := msg[0]
sequence := msg[1]
// domain := msg[2]
// address := msg[3]
identity := msg[4]
mechanism := msg[5]
username := msg[6]
password := msg[7]
if version != "1.0" {
return errors.New("version != 1.0")
}
if mechanism != "PLAIN" {
return errors.New("mechanism != PLAIN")
}
if identity != "IDENT" {
return errors.New("identity != IDENT")
}
if username == "admin" && password == "password" {
handler.SendMessage(version, sequence, "200", "OK", "anonymous", "")
} else {
handler.SendMessage(version, sequence, "400", "Invalid username or password", "", "")
}
return nil
}
doQuit := func(i interface{}) error {
err := handler.Close()
checkErr(err)
fmt.Println("Handler closed")
return errors.New("Quit")
}
quit := make(chan interface{})
reactor := zmq.NewReactor()
reactor.AddSocket(handler, zmq.POLLIN, doHandler)
reactor.AddChannel(quit, 0, doQuit)
go func() {
reactor.Run(100 * time.Millisecond)
fmt.Println("Reactor finished")
quit <- true
}()
defer func() {
quit <- true
<-quit
close(quit)
}()
// Server socket will accept connections
server, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = server.SetIdentity("IDENT")
if checkErr(err) {
return
}
err = server.SetPlainServer(1)
if checkErr(err) {
return
}
err = server.Bind("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
// Check PLAIN security with correct username/password
client, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = client.SetPlainUsername("admin")
if checkErr(err) {
return
}
err = client.SetPlainPassword("password")
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
bounce(server, client, false)
err = client.Close()
if checkErr(err) {
return
}
// Check PLAIN security with badly configured client (as_server)
// This will be caught by the plain_server class, not passed to ZAP
client, err = zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
client.SetPlainServer(1)
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
err = client.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
err = server.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
bounce(server, client, true)
client.SetLinger(0)
err = client.Close()
if checkErr(err) {
return
}
err = server.Close()
checkErr(err)
fmt.Println("Done")
// Output:
// 5 error
// Done
// Handler closed
// Reactor finished
}
func Example_test_security_null() {
time.Sleep(100 * time.Millisecond)
handler, err := zmq.NewSocket(zmq.REP)
if checkErr(err) {
return
}
err = handler.Bind("inproc://zeromq.zap.01")
if checkErr(err) {
return
}
doHandler := func(state zmq.State) error {
msg, err := handler.RecvMessage(0)
if err != nil {
return err // Terminating
}
version := msg[0]
sequence := msg[1]
domain := msg[2]
// address := msg[3]
// identity := msg[4]
mechanism := msg[5]
if version != "1.0" {
return errors.New("version != 1.0")
}
if mechanism != "NULL" {
return errors.New("mechanism != NULL")
}
if domain == "TEST" {
handler.SendMessage(version, sequence, "200", "OK", "anonymous", "")
} else {
handler.SendMessage(version, sequence, "400", "BAD DOMAIN", "", "")
}
return nil
}
doQuit := func(i interface{}) error {
err := handler.Close()
checkErr(err)
fmt.Println("Handler closed")
return errors.New("Quit")
}
quit := make(chan interface{})
reactor := zmq.NewReactor()
reactor.AddSocket(handler, zmq.POLLIN, doHandler)
reactor.AddChannel(quit, 0, doQuit)
go func() {
reactor.Run(100 * time.Millisecond)
fmt.Println("Reactor finished")
quit <- true
}()
defer func() {
quit <- true
<-quit
close(quit)
}()
// We bounce between a binding server and a connecting client
server, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
client, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
// We first test client/server with no ZAP domain
// Libzmq does not call our ZAP handler, the connect must succeed
err = server.Bind("tcp://127.0.0.1:9683")
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9683")
if checkErr(err) {
return
}
bounce(server, client, false)
server.Unbind("tcp://127.0.0.1:9683")
client.Disconnect("tcp://127.0.0.1:9683")
// Now define a ZAP domain for the server; this enables
// authentication. We're using the wrong domain so this test
// must fail.
err = server.SetZapDomain("WRONG")
if checkErr(err) {
return
}
err = server.Bind("tcp://127.0.0.1:9687")
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9687")
if checkErr(err) {
return
}
err = client.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
err = server.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
bounce(server, client, true)
server.Unbind("tcp://127.0.0.1:9687")
client.Disconnect("tcp://127.0.0.1:9687")
// Now use the right domain, the test must pass
err = server.SetZapDomain("TEST")
if checkErr(err) {
return
}
err = server.Bind("tcp://127.0.0.1:9688")
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9688")
if checkErr(err) {
return
}
bounce(server, client, false)
server.Unbind("tcp://127.0.0.1:9688")
client.Disconnect("tcp://127.0.0.1:9688")
err = client.Close()
checkErr(err)
err = server.Close()
checkErr(err)
fmt.Println("Done")
// Output:
// 5 error
// Done
// Handler closed
// Reactor finished
}
func Example_test_security_curve() {
time.Sleep(100 * time.Millisecond)
// Generate new keypairs for this test
client_public, client_secret, err := zmq.NewCurveKeypair()
if checkErr(err) {
return
}
server_public, server_secret, err := zmq.NewCurveKeypair()
if checkErr(err) {
return
}
handler, err := zmq.NewSocket(zmq.REP)
if checkErr(err) {
return
}
err = handler.Bind("inproc://zeromq.zap.01")
if checkErr(err) {
return
}
doHandler := func(state zmq.State) error {
msg, err := handler.RecvMessage(0)
if err != nil {
return err // Terminating
}
version := msg[0]
sequence := msg[1]
// domain := msg[2]
// address := msg[3]
identity := msg[4]
mechanism := msg[5]
client_key := msg[6]
client_key_text := zmq.Z85encode(client_key)
if version != "1.0" {
return errors.New("version != 1.0")
}
if mechanism != "CURVE" {
return errors.New("mechanism != CURVE")
}
if identity != "IDENT" {
return errors.New("identity != IDENT")
}
if client_key_text == client_public {
handler.SendMessage(version, sequence, "200", "OK", "anonymous", "")
} else {
handler.SendMessage(version, sequence, "400", "Invalid client public key", "", "")
}
return nil
}
doQuit := func(i interface{}) error {
err := handler.Close()
checkErr(err)
fmt.Println("Handler closed")
return errors.New("Quit")
}
quit := make(chan interface{})
reactor := zmq.NewReactor()
reactor.AddSocket(handler, zmq.POLLIN, doHandler)
reactor.AddChannel(quit, 0, doQuit)
go func() {
reactor.Run(100 * time.Millisecond)
fmt.Println("Reactor finished")
quit <- true
}()
defer func() {
quit <- true
<-quit
close(quit)
}()
// Server socket will accept connections
server, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = server.SetCurveServer(1)
if checkErr(err) {
return
}
err = server.SetCurveSecretkey(server_secret)
if checkErr(err) {
return
}
err = server.SetIdentity("IDENT")
if checkErr(err) {
return
}
server.Bind("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
err = server.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
// Check CURVE security with valid credentials
client, err := zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = client.SetCurveServerkey(server_public)
if checkErr(err) {
return
}
err = client.SetCurvePublickey(client_public)
if checkErr(err) {
return
}
err = client.SetCurveSecretkey(client_secret)
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
bounce(server, client, false)
err = client.Close()
if checkErr(err) {
return
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with a garbage server key
// This will be caught by the curve_server class, not passed to ZAP
garbage_key := "0000111122223333444455556666777788889999"
client, err = zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = client.SetCurveServerkey(garbage_key)
if checkErr(err) {
return
}
err = client.SetCurvePublickey(client_public)
if checkErr(err) {
return
}
err = client.SetCurveSecretkey(client_secret)
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
err = client.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
bounce(server, client, true)
client.SetLinger(0)
err = client.Close()
if checkErr(err) {
return
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with a garbage client secret key
// This will be caught by the curve_server class, not passed to ZAP
client, err = zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = client.SetCurveServerkey(server_public)
if checkErr(err) {
return
}
err = client.SetCurvePublickey(garbage_key)
if checkErr(err) {
return
}
err = client.SetCurveSecretkey(client_secret)
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
err = client.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
bounce(server, client, true)
client.SetLinger(0)
err = client.Close()
if checkErr(err) {
return
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with a garbage client secret key
// This will be caught by the curve_server class, not passed to ZAP
client, err = zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = client.SetCurveServerkey(server_public)
if checkErr(err) {
return
}
err = client.SetCurvePublickey(client_public)
if checkErr(err) {
return
}
err = client.SetCurveSecretkey(garbage_key)
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
err = client.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
bounce(server, client, true)
client.SetLinger(0)
err = client.Close()
if checkErr(err) {
return
}
time.Sleep(100 * time.Millisecond)
// Check CURVE security with bogus client credentials
// This must be caught by the ZAP handler
bogus_public, bogus_secret, _ := zmq.NewCurveKeypair()
client, err = zmq.NewSocket(zmq.DEALER)
if checkErr(err) {
return
}
err = client.SetCurveServerkey(server_public)
if checkErr(err) {
return
}
err = client.SetCurvePublickey(bogus_public)
if checkErr(err) {
return
}
err = client.SetCurveSecretkey(bogus_secret)
if checkErr(err) {
return
}
err = client.Connect("tcp://127.0.0.1:9998")
if checkErr(err) {
return
}
err = client.SetRcvtimeo(time.Second)
if checkErr(err) {
return
}
bounce(server, client, true)
client.SetLinger(0)
err = client.Close()
if checkErr(err) {
return
}
// Shutdown
err = server.Close()
checkErr(err)
fmt.Println("Done")
// Output:
// 5 error
// 5 error
// 5 error
// 5 error
// Done
// Handler closed
// Reactor finished
}