Does Azure Notification Hub Support iOS VoIP Push Notifications?

Naresh Khuriwal 20

I am using the paid service of Azure Notification Hub to send regular push notifications and VoIP push notifications. Regular push notifications are working fine for both Android and iOS. However, VoIP push notifications are not functioning on iOS.

I have updated the required payload and header parameters according to the documentation, but the notifications are still being sent as normal messages instead of VoIP messages.

For Android, VoIP push notifications are working as expected.

Could someone confirm if Azure Notification Hub supports iOS VoIP push notifications? If yes, are there specific configurations or steps I need to follow to enable it?

1 answer

Shree Hima Bindu Maganti 815 Reputation points Microsoft Vendor

2024-11-18T08:42:11.9966667+00:00
Hi @Naresh Khuriwal ,
Welcome to the Microsoft Q&A Platform!
Azure Notification Hub does support iOS VoIP push notifications, but certain specific configurations are required to ensure they are sent correctly.
APNs VoIP Certificate

Use a VoIP-specific APNs certificate generated from the Apple Developer portal.

Upload the .p12 file to Azure Notification Hub.

Include content-available: 1 in the payload to indicate background processing.
{ "aps": { "content-available": 1, "alert": { "title": "Incoming Call", "body": "You have an incoming call." } } }

Headers

Set the following headers:

apns-push-type: voip

apns-priority: 10

apns-topic: <Bundle Identifier>.voip

Bundle Identifier

Ensure the app’s Bundle Identifier matches the apns-topic.

Device Token:

Use a VoIP-specific device token generated with

pushRegistry.desiredPushTypes = [.voIP]

Test with APNs

Use tools like curl to test VoIP push notifications directly with APNs.

Azure Notification Hub Logs

Enable and review diagnostic logs in the Azure portal for errors or mismatches.
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Shree Hima Bindu Maganti 815 Reputation points Microsoft Vendor

2024-11-19T01:26:56.7733333+00:00

Hi @Naresh Khuriwal ,

Following up to see if you have chance to check my previous response and help us with requested information to check and assist you further on this.

Naresh Khuriwal 20 Reputation points

2024-11-19T02:22:44.88+00:00

Hi @Shree Hima Bindu Maganti

Thanks for quick response.

I already using the same this that you suggest. For reference I am sending few logs here

When I am sending the voip request then this is the body and headers nd got the response message_id from gateway

But device side I nothing is received

{"aps":{"content-available":1,"alert":{"title":"New Alert","body":"You have a new update. Please check your app for details."}}} Array ( [0] => Authorization: SharedAccessSignature sr=https%3a%2f%2fstarcloudpushhub.servicebus.windows.net%2fstarspushhub-01%2fmessages%3fapi-version%3d2016-07&sig=R2%2FAZ2FGRvXoNhDm2umhE4AdhE1EdfvcHHKhUH%2FiJkY%3D&se=1731986346&skn=DefaultFullSharedAccessSignature [1] => Content-Type: application/json;charset=utf-8 [2] => ServiceBusNotification-Format: apple [3] => ServiceBusNotification-Tags: sundeep_voip_push_token_202411130852 [4] => ServiceBusNotification-Apns-Push-Type: voip [5] => ServiceBusNotification-Apns-Topic: com.messaging.stars.voip [6] => ServiceBusNotification-Apns-Priority: 10 ) Notification sent successfully! Message ID: NH-20241119021906571-d1c4986ffb674affa271e3ecb3ab83e3-09

But when i check the telemetry data of this Message ID:

NH-20241119021906571-d1c4986ffb674affa271e3ecb3ab83e3-09

then this is the response I am getting

<NotificationBody>{"aps":{"alert":{"title":"New Alert","body":"You have a new update. Please check your app for details."},"content-available":1}}</NotificationBody> <Tags>sundeep_voip_push_token_202411130852</Tags> <TargetPlatforms>apple</TargetPlatforms> <ApnsOutcomeCounts> <Outcome> <Name>WrongToken</Name> <Count>1</Count> </Outcome> </ApnsOutcomeCounts> <PnsErrorDetailsUri> https://pushpnsfb5b0fa8a06c9f4e.blob.core.windows.net/00000000000000112575/20241119/1ea72d7377704ac7aace68b246ae1daf.xml?skoid=3f74b6e9-2c61-4a6f-b56f-a6574d2e994e&sktid=33e01921-4d64-4f8c-a055-5bdaffd5e33d&skt=2024-11-19T01%3A54%3A17Z&ske=2024-11-25T01%3A59%3A17Z&sks=b&skv=2021-08-06&sv=2021-08-06&st=2024-11-19T01%3A53%3A39Z&se=2024-11-25T01%3A58%3A39Z&sr=b&sp=r&sig=Toqhsyetacc4Qvvl0BNbSFTMm8se6lAwnw5Gd2owKkw%3D </PnsErrorDetailsUri> </NotificationDetails>

Can you suggest me what I am doing wrong here and voip token I am using the same one that is already working if I use the Apple voip service.

Shree Hima Bindu Maganti 815 Reputation points Microsoft Vendor

2024-11-19T08:46:44.5666667+00:00

Hi @Naresh Khuriwal ,
Thanks for quick response.
It seems the issue is with the VoIP token you're using. The APNs error "WrongToken" suggests that the token you're sending is not valid for VoIP push notifications.
Verify the VoIP Token: Ensure you're using a VoIP-specific token, not a regular push token. VoIP tokens are typically provided by PKPushRegistry in iOS.

Check the APNs Topic: The ServiceBusNotification-Apns-Topic should be com.messaging.stars.voip (your bundle ID + .voip).

Check the Certificate/Key: Ensure your VoIP APNs certificate or APNs key is correctly configured in Azure Notification Hub and matches the one set in the Apple Developer Portal.

Examine the Error Details: The error details in the provided URI (PnsErrorDetailsUri) will show why APNs rejected the token (like an invalid token format or expired certificate).

Shree Hima Bindu Maganti 815 Reputation points Microsoft Vendor

2024-11-20T03:42:42.7566667+00:00

Hi @Naresh Khuriwal ,

Following up to see if you have chance to check my previous response and help us with requested information to check and assist you further on this.

Naresh Khuriwal 20 Reputation points

2024-11-21T02:18:02.41+00:00

Thank you for the detailed response. We have been successfully using the iOS VoIP push service for several years without any issues. Recently, we migrated to using Azure Notification Hub for sending both standard and VoIP push notifications. While standard push notifications are working perfectly, we are encountering issues specifically with iOS VoIP push notifications.

We have ensured that the token and APNs topic remain the same as what was previously used with the iOS service. The only changes made for Azure Notification Hub were adding a few headers and updating the payload body as required.

Despite these adjustments, the VoIP push notifications are not being delivered correctly. Instead, they are being treated and delivered as standard push notifications (test messages).

Could you please provide further guidance on why this might be happening? Are there any additional configurations or considerations specific to Azure Notification Hub for VoIP push notifications that we might have missed?

Thank you for your support.

Shree Hima Bindu Maganti 815 Reputation points Microsoft Vendor

2024-11-21T04:40:57.3533333+00:00

Hi @Naresh Khuriwal ,

Thanks for quick response.
The issue you're facing indicates that the VoIP push notifications sent via Azure Notification Hub are being treated as standard notifications instead of VoIP notifications. This usually happens due to incorrect configuration of headers or payloads required specifically for VoIP notifications in APNs.
Set the apns-push-type Header

Ensure ServiceBusNotification-Apns-Push-Type is explicitly set to voip.

Use the correct topic: <bundle-identifier>.voip (e.g., com.messaging.stars.voip).

Ensure the payload includes content-available: 1 and avoid fields like sound or badge.

{ "aps": { "content-available": 1 } }

Confirm that the uploaded APNs certificate or key supports VoIP notifications.

Test the VoIP token with APNs directly using tools like curl or Pusher to verify the configuration.

Check the logs at PnsErrorDetailsUri to identify any header or topic mismatches.

Shree Hima Bindu Maganti 815 Reputation points Microsoft Vendor

2024-11-22T04:50:14.0166667+00:00

Hi @Naresh Khuriwal ,

Following up to see if you have chance to check my previous response and help us with requested information to check and assist you further on this.
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Does Azure Notification Hub Support iOS VoIP Push Notifications?

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