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After a User Joins a Group/

After a User Joins a Group

Feature Overview

This callback allows you to view the messages of group member join on the application backend in real time. Specifically, it notifies the application backend of group join so that the app can sync data as necessary.

Notes

To enable this callback, you must configure a callback URL and toggle on the corresponding protocol. For more information on the configuration method, see Callback Configuration.
During this callback, the IM backend initiates an HTTP POST request to the app backend.
After receiving the callback request, the app backend must check whether the SDKAppID contained in the request URL is the SDKAppID of the app.
For more security considerations, see the Security Considerations section in Third-Party Callback Overview.

Callback Triggering Scenarios

An app user sends a request to join the group on the client, and the request is approved.
An app user successfully invites another user to join the group on the client.
The app admin adds a user to a group through the RESTful API.

Callback Triggering Timing

This callback will be triggered after a user requests to join a group and successfully joins the group.
This callback will be triggered after a user is invited by another member and successfully joins the group.
This callback will be triggered after a user is added to a group by the app admin through the RESTful API.

API Calling Description

Sample request URL

In the following sample, the callback URL configured in the app is https://www.example.com. Example:
https://www.example.com?SdkAppid=$SDKAppID&CallbackCommand=$CallbackCommand&contenttype=json&ClientIP=$ClientIP&OptPlatform=$OptPlatform

Request parameters

Parameter
Description
https
The request protocol is HTTPS, and the request method is POST.
www.example.com
Callback URL
SdkAppid
The SDKAppID assigned by the IM console when the app is created
CallbackCommand
Fixed value: Group.CallbackAfterNewMemberJoin.
contenttype
Fixed value: JSON.
ClientIP
Client IP, such as 127.0.0.1
OptPlatform
Client platform. For valid values, see the description of OptPlatform in the Callback Protocols section of Third-Party Callback Overview.

Sample request

{
    "CallbackCommand": "Group.CallbackAfterNewMemberJoin", // Callback command
    "GroupId" : "@TGS#2J4SZEAEL",
    "Type": "Public", // Group type
    "JoinType": "Apply", // Group joining mode. Valid values: `Apply` (group join upon request); `Invited` (group join by invitation).
    "Operator_Account": "leckie", // Operator
    "NewMemberList": [ // List of new members in the group
        {
            "Member_Account": "jared"
        },
        {
            "Member_Account": "tommy"
        }
    ],
    "EventTime":"1670574414123"// Event trigger timestamp in milliseconds		
}

Request fields

Field
Type
Description
CallbackCommand
String
Callback command
GroupId
String
Group ID
Type
String
Type of the group to be created (for more information, see Group System), such as Public.
JoinType
String
Group joining mode. Valid values: Apply (group join upon request); Invited (group join by invitation).
Operator_Account
String
UserID of the request sender
NewMemberList
Array
Set of UserID values of new group members
EventTime
Integer
Event trigger timestamp in milliseconds

Sample response

A response is returned after the app backend syncs the data.
{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0 // Ignore the response result
}

Response fields

Field
Type
Required
Description
ActionStatus
String
Yes
Request result. OK: successful; FAIL: failed
ErrorCode
Integer
Yes
Error code. The value 0 indicates to allow ignoring the response result.
ErrorInfo
String
Yes
Error information

References

Third-Party Callback Overview
Callback After a User Leaves a Group
Callback for Online and Offline Status of Audio-Video Group Members
RESTful API: Adding Group Members