The PubNub Data Stream Network powers low-latency secure messaging on every device, at massive scale.
PubNub BLOCKS makes the network programmable, executing your application logic on data as it passes over the network, removing the need to deploy and scale app servers.
// send a message
pubnub.publish({
channel: 'chatChannel',
message: { foo : 'bar' }
}, function ( status, response ) {
console.log( status.error, response )
})Dictionary<string, string> sendMessage = new Dictionary<string, string>();
sendMessage.Add("foo", "bar");
pubnub.Publish<string>(
channel:"chatChannel",
message: sendMessage,
userCallback: DisplayPublishReturnMessage,
errorCallback: DisplayErrorMessage);- (void)client:(PubNub *)client didReceiveStatus:(PNStatus *)status {
if (status.operation == PNSubscribeOperation && status.category == PNConnectedCategory) {
[self.client publish: @{@"foo": @"bar"} toChannel: @"chatChannel"
withCompletion:^(PNPublishStatus *publishStatus) {
if (!publishStatus.isError) {
NSLog(@"Published!");
}
else {
NSLog(@"Publish did fail with error: %@",
status.errorData.data?: status.errorData.information);
}
}];
}
}func client(client: PubNub, didReceiveStatus status: PNStatus) {
if status.operation == .SubscribeOperation && status.category == .PNConnectedCategory {
client.publish(["foo": "bar"], toChannel: "chatChannel",
withCompletion: { (publishStatus) in
if !publishStatus.error {
print("Published!")
}
else {
print("Publish did fail with error: \(status.errorData.data ?? status.errorData.information)")
}
})
}
}Map message = new HashMap();
message.put("foo", "bar");
pubnub.publish()
.channel("chatChannel")
.message(message)
.async(new PNCallback<PNPublishResult>() {
@Override
public void onResponse(PNPublishResult result, PNStatus status) {
if (status.isError()) {
System.out.println(status);
} else {
System.out.println("Published!");
}
}
});export default request => {
request.message.hello = 'world!'
return request.ok()
}// receive a message
pubnub.subscribe({ channels: ['chatChannel'] })
pubnub.addListener({
message: function (message) {
console.log(message)
}
})pubnub.Subscribe<string>(
channel: "chatChannel",
subscribeCallback: (result) => { Console.WriteLine(result); },
connectCallback: DisplaySubscribeConnectStatusMessage,
errorCallback: DisplayErrorMessage);[self.client addListener:self];
[self.client subscribeToChannels: @[@"chatChannel"] withPresence:NO];
- (void)client:(PubNub *)client didReceiveMessage:(PNMessageResult *)message {
NSLog(@"%@", message.data.message);
}client.addListener(self)
client.subscribeToChannels(["chatChannel"], withPresence: false)
func client(client: PubNub, didReceiveMessage message: PNMessageResult) {
print("\(message.data.message)")
}pubnub.addListener(new SubscribeCallback() {
@Override
public void message(PubNub pubnub, PNMessageResult message) {
System.out.println(message);
}
});
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