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subscriber.go
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/
subscriber.go
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package main
import (
"log"
"os"
"os/signal"
"github.com/Suited-Entertainment/nexus/v3/examples/newclient"
"github.com/Suited-Entertainment/nexus/v3/wamp"
)
const exampleTopic = "example.hello"
func main() {
logger := log.New(os.Stdout, "SUBSCRIBER> ", 0)
// Connect subscriber client with requested socket type and serialization.
subscriber, err := newclient.NewClient(logger)
if err != nil {
logger.Fatal(err)
}
defer subscriber.Close()
// Define function to handle events received.
eventHandler := func(event *wamp.Event) {
logger.Println("Received", exampleTopic, "event")
if len(event.Arguments) != 0 {
logger.Println(" Event Message:", event.Arguments[0])
}
}
// Subscribe to topic.
err = subscriber.Subscribe(exampleTopic, eventHandler, nil)
if err != nil {
logger.Fatal("subscribe error:", err)
}
logger.Println("Subscribed to", exampleTopic)
// Wait for CTRL-c or client close while handling events.
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, os.Interrupt)
select {
case <-sigChan:
case <-subscriber.Done():
logger.Print("Router gone, exiting")
return // router gone, just exit
}
// Unsubscribe from topic.
if err = subscriber.Unsubscribe(exampleTopic); err != nil {
logger.Fatal("Failed to unsubscribe:", err)
}
}