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The following callback data describes the structure of messages sent from user to PA.
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These include: text, picture, video, contact, URL and location. Excluding file type, all message types are supported for sending from bot to user and from user to bot. In such cases the flow will be as follows. Since some of the message validations take place on the server while the others take place on the client, some messages may only fail after reaching the client. If Viber is unable to deliver the message to the client it will try to deliver it for up to 14 days. This means that several callbacks can be received for a single message. If the message recipient is using their Viber account on multiple devices, each of the devices will return a delivered and a seen status. An example welcome message would look like this. To learn more about this event and when is it triggered see Conversation started in the callbacks section.
#VIBER VERSION 40 FREE DOWNLOAD FOR ANDROID HOW TO#
How to Spy on Viber Messages Without Having Access to the Phone? The Viber API allows sending messages to users only after they subscribe to the account. The receiver parameter is not mandatory in this case. See sending a welcome message below for more information. This will trigger an unsubscribed callback. The user will have the option to unsubscribe from the PA. This means that if a user had a conversation with a service and then chose to unsubscribe and subscribe again, a new conversation will be started without any information related to the old conversation. Sending the first message will not trigger a subscribe callback, only a message callback see receive message from user section. Subscribing can take place if the user sends a message to the bot - when a user sends its first message to a bot the user will be automatically subscribed to the bot. There will be a retry attempt after 5 seconds, and then another after 1 minute and 5 seconds.īefore an account can send messages to a user, the user will need to subscribe to the account. In case the webhook is offline Viber will re-try to deliver the callback until HTTP status code is received.
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Each callback will contain a signature on the JSON passed to the callback. The API supports up to user id per request and those users must be subscribed to the account. This request can be sent twice during a 12 hours period for each user ID. The account admin will be able to edit most of these details from his Viber client. The place holders can appear anywhere in the message, even in tracking data.
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For example this should be a part of the full JSON body. Every user must be subscribed and have a valid user id. This mandatory parameter defines the recipients for the message. The Broadcast API is used to send messages to multiple recipients with a rate limit of requests in a 10 seconds window.