Join Event

This event object is used when a bot joins a team/group or 1:N message room.
It occurs in the following cases, where an event object whose type property is "join" is sent.

When a bot creates a message room using the API
When a bot is invited to a team/group or 1:N message room
When a user creates a message room with a bot included.

Request {#join-event-request}

Parameter	Type	Required	Description
type	string	Y	Set this parameter to "join".
source	object	Y	The subject that sent a callback message.
source.channelId	string	Y	The message room ID to which the bot was invited.
source.domainId	number	Y	The domain ID to which the bot was invited.
issuedTime	string	Y	The date and time when the event occurred, in RFC 3339 format.

Request example {#join-event-request-example}

POST /callback HTTP/1.1Host: YOUR_SERVER_HOST_NAMEContent-type: application/json; charset=UTF-8X-WORKS-Signature: 9crxWhZ9aQO/9ruUM4MH3dF/WRGYRhj0vSR4cRyJfHQ=X-WORKS-BotId: 123{  "type": "join",  "source": {    "channelId": "12345",    "domainId": 40029600  },  "issuedTime":"2022-01-04T05:16:05Z"}

Response (customer's server receiving messages -> message server) {#join-event-response}

It should return HTTP status 200 if successful.
The HTTP request sent by a callback is not resent even if it failed.

Response {#join-event-response-example}

HTTP/1.1 200 OKContent-Type: application/jsonServer: YOUR_SERVER_HOST_NAMEContent-Length: 0