Callback after Member Changed

Feature Description
The App backend can view call member status changes in real time through this callback.	
Must-Knows
To enable the callback, you must configure the callback URL via the REST API and turn on the switch corresponding to this callback protocol. For the configuration method, see Callback Configuration Settings.
The direction of the callback is that the Call backend initiates an HTTP POST request to the App backend.
After receiving a callback request, the App backend needs to verify whether the value of the SDKAppID parameter in the request URL is its own SDKAppID.
Callback Triggering Scenarios
Status changes of members caused by operations such as connect, hang up, etc. performed by App users through the client will trigger this callback.
Callback Triggering Timing
After the call member status changes.
API Description
Sample Request URL
In the following example, the callback URL configured for the App is https://www.example.com.
Example:
https://www.example.com?SdkAppid=$SDKAppID&CallbackCommand=$CallbackCommand&contenttype=json&ClientIP=$ClientIP&OptPlatform=$OptPlatform
Request Parameters
Parameters
Overview
https
The request protocol is HTTPS, and the request method is POST.
www.example.com
Callback URL
SdkAppid
Assigned SDKAppID in the Chat console when creating an application
CallbackCommand
Fixed as Call.CallbackAfterMemberChanged
contenttype
The value is fixed as json
ClientIP
Client IP address, in the format of 127.0.0.1
OptPlatform
Client platform. For the parameter values, see the description of the OptPlatform parameter in the Third-Party Callback Overview: Callback Protocol﻿
Sample Request Packet
{
    "CallbackCommand":"Call.CallbackAfterMemberChanged",
    "CallId":"055662e1-bc8a-469c-a334-1126c8c17d58",
    "UserList":[
        {
            "User_Account":"user1",
            "Status":"Calling"
        },
        {
            "User_Account":"user2",
            "Status":"Calling"
        }
    ],
    "ChangedUserList":[
        {
            "User_Account":"user2",
            "ActionType":"Answer"  // Answer: Answer; Reject: Reject; NotAnswer: Unanswered; Hangup: Hang up; Join: Proactively Join; Offline: Offline (heartbeat expiry); Invite: Invite; Cancel_Invite: Cancel invitation;
        }
    ]
    "EventTime":1740464128807
}
Request Packet Fields
Field
Type
Overview
CallbackCommand
String
Callback command
CallId
String
Call ID
UserList
Array
Call Member List
User_Account
String
Calling User ID
Status
String
Call status: 
Calling : on a call 
Waiting : waiting for connection
ChangedUserList
Array
Member list
 ChangedUserList.User_Account
String
User ID of the member whose status has changed
 ActionType 
 String 
Change operation that causes changes
Accept:  Answer
Reject:  Deny
NotAnswer:  Unanswered
Hang Up:  Hang up
Join:  Join in Call
Offline:  Offline
Invited:   Invite to join a call by caller
Canncel_Invite:  Cancel Invite by caller
EventTime
Integer
Event-triggered timestamp in milliseconds
Sample Response Packet
The response packet is returned after the App backend synchronizes the data.
{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0 // Ignore callback result
}
Response Packet Fields
Field
Type
Required
Overview
ActionStatus
String
Required
Request processing result. OK: processing successful; FAIL: processing failed.
ErrorInfo
String
Required
Error message.
ErrorCode
Integer
Required
Error code. Enter 0 here to ignore the callback result.
References
﻿Webhook Overview﻿
REST API: Retrieve real-time call status﻿

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Parameters	Overview
https	The request protocol is HTTPS, and the request method is POST.
www.example.com	Callback URL
SdkAppid	Assigned SDKAppID in the Chat console when creating an application
CallbackCommand	Fixed as `Call.CallbackAfterMemberChanged`
contenttype	The value is fixed as `json`
ClientIP	Client IP address, in the format of `127.0.0.1`
OptPlatform	Client platform. For the parameter values, see the description of the OptPlatform parameter in the Third-Party Callback Overview: Callback Protocol

Field	Type	Overview
CallbackCommand	String	Callback command
CallId	String	Call ID
UserList	Array	Call Member List
User_Account	String	Calling User ID
Status	String	Call status: `Calling` : on a call `Waiting` : waiting for connection
ChangedUserList	Array	Member list
ChangedUserList.User_Account	String	User ID of the member whose status has changed
ActionType	String	Change operation that causes changes `Accept`: Answer `Reject`: Deny `NotAnswer`: Unanswered `Hang Up`: Hang up `Join`: Join in Call `Offline`: Offline `Invited`: Invite to join a call by caller `Canncel_Invite`: Cancel Invite by caller
EventTime	Integer	Event-triggered timestamp in milliseconds

Field	Type	Required	Overview
ActionStatus	String	Required	Request processing result. OK: processing successful; FAIL: processing failed.
ErrorInfo	String	Required	Error message.
ErrorCode	Integer	Required	Error code. Enter 0 here to ignore the callback result.

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Feature Description

Must-Knows

Callback Triggering Scenarios

Callback Triggering Timing

API Description

Sample Request URL

Request Parameters

Sample Request Packet

Request Packet Fields

Sample Response Packet

Response Packet Fields

References