This is the official PubNub Go SDK repository.
PubNub takes care of the infrastructure and APIs needed for the realtime communication layer of your application. Work on your app's logic and let PubNub handle sending and receiving data across the world in less than 100ms.
- Go (1.9+)
You will need the publish and subscribe keys to authenticate your app. Get your keys from the Admin Portal.
-
Integrate PubNub into your project using the
gocommand:go get github.com/pubnub/go
If you encounter dependency issues, use the
dep ensurecommand to resolve them. -
Create a new file and add the following code:
func main() { config := pubnub.NewConfigWithUserId("userId") config.SubscribeKey = "mySubscribeKey" config.PublishKey = "myPublishKey" pn := pubnub.NewPubNub(config) }
listener := pubnub.NewListener()
doneConnect := make(chan bool)
donePublish := make(chan bool)
msg := map[string]interface{}{
"msg": "Hello world",
}
go func() {
for {
select {
case status := <-listener.Status:
switch status.Category {
case pubnub.PNDisconnectedCategory:
// This event happens when radio / connectivity is lost
case pubnub.PNConnectedCategory:
// Connect event. You can do stuff like publish, and know you'll get it.
// Or just use the connected event to confirm you are subscribed for
// UI / internal notifications, etc
doneConnect <- true
case pubnub.PNReconnectedCategory:
// Happens as part of our regular operation. This event happens when
// radio / connectivity is lost, then regained.
}
case message := <-listener.Message:
// Handle new message stored in message.message
if message.Channel != "" {
// Message has been received on channel group stored in
// message.Channel
} else {
// Message has been received on channel stored in
// message.Subscription
}
if msg, ok := message.Message.(map[string]interface{}); ok {
fmt.Println(msg["msg"])
}
/*
log the following items with your favorite logger
- message.Message
- message.Subscription
- message.Timetoken
*/
donePublish <- true
case <-listener.Presence:
// handle presence
}
}
}()
pn.AddListener(listener)In this code, publishing a message is triggered when the subscribe call is finished successfully. The Publish() method uses the msg variable that is used in the following code.
msg := map[string]interface{}{
"msg": "Hello world!"
}
pn.Subscribe().
Channels([]string{"hello_world"}).
Execute()
<-doneConnect
response, status, err := pn.Publish().
Channel("hello_world").Message(msg).Execute()
if err != nil {
// Request processing failed.
// Handle message publish error
}If you need help or have a general question, contact [email protected].
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