The Bot Connector service exchanges information between between bot and channel (user) by passing an Activity object. The most common type of activity is message, but there are other activity types that can be used to communicate various types of information to a bot or channel.
Activity types in the Bot Connector service
The following activity types are supported by the Bot Connector service.
|message||Represents a communication between bot and user.|
|conversationUpdate||Indicates that the bot was added to a conversation, other members were added to or removed from the conversation, or conversation metadata has changed.|
|contactRelationUpdate||Indicates that the bot was added or removed from a user's contact list.|
|typing||Indicates that the user or bot on the other end of the conversation is compiling a response.|
|ping||Represents an attempt to determine whether a bot's endpoint is accessible.|
|deleteUserData||Indicates to a bot that a user has requested that the bot delete any user data it may have stored.|
|endOfConversation||Indicates the end of a conversation.|
Your bot will send message activities to communicate information to and receive message activities from users. Some messages may be plain text, while others may contain richer content such as media attachments, buttons, and cards or channel-specific data. For information about commonly-used message properties, see Create messages. For information about how to send and receive messages, see Send and receive messages.
A bot receives a conversationUpdate activity whenever it has been added to a conversation, other members have been added to or removed from a conversation, or conversation metadata has changed.
If members have been added to the conversation, the activity's
addedMembers property will identify the new members. If members have been removed from the conversation, the
removedMembers property will identify the removed members.
If your bot receives a conversationUpdate activity indicating that a user has joined the conversation, you may choose to respond by sending a welcome message to that user.
A bot receives a contactRelationUpdate activity whenever it is added to or removed from a user's contact list. The value of the activity's
action property (add | remove) indicates whether the bot has been added or removed from the user's contact list.
A bot receives a typing activity to indicate that the user is typing a response. A bot may send a typing activity to indicate to the user that it is working to fulfill a request or compile a response.
A bot receives a ping activity to determine whether its endpoint is accessible. The bot should respond with HTTP status code 200 (OK), 403 (Forbidden), or 401 (Unauthorized).
A bot receives a deleteUserData activity when a user requests deletion of any data that the bot has previously persisted for him or her. If your bot receives this type of activity, it should delete any personally identifiable information (PII) that it has previously stored for the user that made the request.
A bot receives an endOfConversation activity to indicate that the user has ended the conversation. A bot may send an endOfConversation activity to indicate to the user that the conversation is ending.