Table of Contents
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ℹ️ About webhooks
Webhooks enable Ondato to send real-time notifications about changes in your resources. These notifications are sent as POST requests to your server immediately after the event occurs, and the request body includes information about the resource.
🔐 Security
Ondato uses HTTPS to transmit these notifications in the form of a JSON payload.
🛒 Ordering
Ondato delivers events asynchronously. Therefore, you might receive them out of order and need to handle them accordingly.
📫 Webhook IP addresses
All webhook requests will originate from the following IP addresses:
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20.31.10.47 20.31.227.231 20.76.229.117 20.76.229.248 213.226.187.101 |
Please ensure that you whitelist the above IPs to receive webhook notifications.
🔃 Retry logic
Upon sending a webhook notification, we are waiting for a success response for 30 seconds. Otherwise, if your endpoint does not respond, the webhook is queued for retry.
We use an exponential backoff retry policy for event delivery. The attempt to resend the notifications is according to the following schedule on a best effort basis:
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If the endpoint responds within 3 minutes, we will attempt to remove the event from the retry queue on a best-effort basis. However, duplicates may still be received.
A small degree of randomization is incorporated into all retry steps and may selectively skip certain retries if an endpoint is offline for an extended period or seems overloaded.
The maximum number of retry attempts is 30.
When Event Grid is unable to deliver an event within a specific time frame or after attempting to deliver the event a certain number of times, the event is dropped.
❔ How to start receiving webhooks?
To begin receiving event notifications in your application, you need to follow these steps:
1️⃣ Identify the events you want to monitor.
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📄 Please see a full list of events in this section here: https://ondato.atlassian.net/wiki/spaces/PUB/pages/2296184995/Webhooks#%F0%9F%AA%84-Webhook-types. |
2️⃣ Create a webhook endpoint as an HTTP endpoint on your local server.
3️⃣ Handle requests from Ondato.
4️⃣ Deploy your webhook endpoint to make it publicly accessible via an HTTPS URL.
5️⃣ Contact the Ondato support team to register the publicly accessible HTTPS URL and provide a list of events you would like to monitor.
Please note that we also support multiple URLs for sending webhooks.
😶🌫️ Requirements for webhook endpoint
Ondato needs to know where to send information about events. To receive webhooks, you must create a webhook endpoint and provide us with a publicly accessible HTTPS URL that meets the following criteria:
1️⃣ URL format: https://<your-website-name>/<your-webhook-endpoint>
2️⃣ URL must support
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3️⃣ URL must be secure (HTTPS protocol).
4️⃣ URL must support one of the available authentication flows:
basic| username, passwordoAuth2| clientID, clientSecret, tokenUrlHMAC| client-side verification
🔑 Handling webhook events with HMAC Authentication
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To begin receiving webhook events with HMAC Authentication, you need to first obtain your secret from Ondato. |
🐾 HMAC webhook verification steps:
1️⃣ In a web request, you would receive the Ondato-Signature header.
Request header example:
Ondato-Signature: t=1712825621, s=7026783cfd8b88a2652f23e789f1ec7de02b7c6ef8362892fe743fead4bab71d
2️⃣ Parse the value t from the header - timestamp
For a given example:
1712825621
3️⃣ Get the received body/json string - json
4️⃣ Join to a single string $"{timestamp}.{json}" - message
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Joining to a single string may vary depending on your programming environment. |
5️⃣ Using secret, compute HMACSHA256 hash (lower case) for message - computedHash
6️⃣ Parse the value s from the header - signature
For a given example:
7026783cfd8b88a2652f23e789f1ec7de02b7c6ef8362892fe743fead4bab71d
7️⃣ Compare the computedHash with the signature - they should match.
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Events sent by Ondato will have a body in the following structure: |
Property | Description | ||||||||||||
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| Webhook ID | ||||||||||||
| Internal ID to identify you in the Ondato system. | ||||||||||||
| Date and time when the webhook was generated. | ||||||||||||
| Date and time when the webhook was delivered.
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| Status of the webhook if it was delivered or not. Possible values are true/ false.
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| Depending on the webhook type property, the payload always returns the same information you could obtain from the
For example, the webhook type is
/identifications/{id}.Information about each event payload is here. | ||||||||||||
| Type of the webhook. It consists of two parts (the first part identifies the service and the second one, the event): |
🪄 Webhook types
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You have the option to configure various webhook types that can trigger a message to registered webhooks. |
🆔 Identity Verification (IDV) webhooks
👤 KYC Identification webhooks
🏢 KYB identification webhooks
🧾 Form webhooks
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The Form webhook events outlined below will provide details on the progress of form steps, excluding form values. |