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rick-smith2386 avatar image
rick-smith2386 asked ·

Recieve SMS using C#

How can I receive SMS using C#

So I can send SMS using the api. But can't seem to find a way to receive them. Is it even possible? At this point I think I need something like ngrok? But Im not sure where to start.

Thanks In Advance
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Tyler Liu avatar image
Tyler Liu answered ·
If you want to receive sms in real time, check this:  https://github.com/ringcentral/ringcentral-csharp-client/blob/master/RingCentral.Test/SubscripotionT... It is powered by PubNub, so you don't need ngrok.

Alternatively, you can check WebHook which does require a public address:  https://github.com/ringcentral/ringcentral-csharp-client/blob/master/RingCentral.Test/WebHookTest.cs

Or if you don't need real time sms notification, you can retrieve sms via HTTP GET /restapi/v1.0/account/~/extension/~/message-store

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rick-smith2386 avatar image
rick-smith2386 answered ·
Tyler

Thanks again! I will try these.
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rick-smith2386 avatar image
rick-smith2386 answered ·
Tyler

Hmm I just plugged it in and tried the PubNub variant, It has an error can't quite figure out.

 await subscription.Register(); //Throws Object Reference not set to instance of object...



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Throws Object Reference not set to instance of object
Which object did it mean?

Maybe you can provide more information, preferably the full code snippet.
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Thanks. It appears to be Subscription is the problem, here is the code

ublic async void MessageNotifications()
        {
            RestClient rc = new RestClient("XXXNNNN", "XXXNNN123");           
            var subscription = rc.Restapi().Subscription().New();
            subscription.EventFilters.Add("/restapi/v1.0/account/~/extension/~/message-store");
            var presenceCount = 0;
            subscription.PresenceEvent += (sender, args) => {
                presenceCount += 1;
                Console.WriteLine(args.Message);
            };
            var messageCount = 0;
            var messageNotificationCount = 0;
            subscription.NotificationEvent += (sender, args) => {
                messageCount += 1;
                var message = args.message;
                Console.WriteLine(message);
                dynamic jObject = JObject.Parse(message);
                var eventString = (string)jObject.@event;
                if (new Regex("/account/\\d+/extension/\\d+/message-store").Match(eventString).Success)
                {
                    messageNotificationCount += 1;
                    var bodyString = JsonConvert.SerializeObject(jObject.body);
                    var messageEvent = JsonConvert.DeserializeObject<MessageEvent>(bodyString);
                //For now just show it...  
               txtIncomingSMS.text =  bodyString;
                   
                }
            };
            var statusCount = 0;
            subscription.StatusEvent += (sender, args) => {
                statusCount += 1;
                Console.WriteLine(args.Message);
            };
            await subscription.Register(); //Throws Object Reference not set to instance of object
}


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At this point, and based on  almost non-existent documentation I am making wild guesses here;
I think what is missing from this is - PubNubMessaging.Core;  . Am I in the ball park? Where is this thing located I tried PubNub.com but could not really find any reference to Pubnubmessaging.core.

Thanks again?


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You code seems pretty fine to me because it is just the code from the test cases.

At the moment I have no idea why it doesn't work. Let me write a program to reproduce the issue.
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I have written a sample project and it runs pretty smooth without the "Object Reference not set to instance of object" error.  https://github.com/tylerlong/RingCentralPasswordFlow/tree/PubNub

Could you please have a try? Pay attention it is the PubNub branch instead of master branch.

The code is pretty simple:  https://github.com/tylerlong/RingCentralPasswordFlow/blob/PubNub/RingCentralPasswordFlow/Program.cs#...
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Phong Vu avatar image
Phong Vu answered ·
Hi Rick,

Alternatively, check out this quick start for what you want to achieve.

https://developers.ringcentral.com/guide/notifications/quick-start/pubnub/c-sharp
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