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Invoke a Callback After Delivering Group Messages

Last updated: 2020-06-10 18:37:40

Feature Description

The app backend can use this callback to monitor users’ group messages in real time. Through this callback, the app backend can be notified of the successfully sent group messages so that it can perform required data synchronization.

Precautions

To enable this callback, you must configure the callback URL and toggle on the corresponding protocol. For details on the configuration method, see Third-Party Callback Configuration.
Callback direction: 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 consistent with its own SDKAppID.
For other security-related issues, see Third-Party Callback Overview: Security Considerations.

Callback Triggering Scenarios

An app user sends a group message through the client.
The app admin sends a group message through a RESTful API.

Callback Triggering Time

The callback is triggered after a group message is successfully sent.

API Description

Request URL example

In the following example, 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	The callback URL.
SdkAppid	The SDKAppID assigned by the IM console when an app is created.
CallbackCommand	The value is fixed to Group.CallbackAfterSendMsg.
contenttype	The value is fixed to JSON.
ClientIP	The client IP address, whose format is similar to 127.0.0.1.
OptPlatform	The client platform. For details on the possible values, see the OptPlatform parameter in Third-Party Callback Overview: Callback Protocols.

Request packet example

{
    "CallbackCommand": "Group.CallbackAfterSendMsg", // Callback command
    "GroupId": "@TGS#2J4SZEAEL", // Group ID
    "Type": "Public", // Group type
    "From_Account": "jared", // Sender
    "Operator_Account":"admin", // Request initiator
    "Random": 123456, // Random number
    "MsgSeq": 123, // Message sequence number
    "MsgTime": 1490686222, // Message sending time
    "MsgBody": [ // Message body. For more information, see the TIMMessage message object.
        {
            "MsgType": "TIMTextElem", // Text
            "MsgContent": {
                "Text": "red packet"
            }
        }
    ]
}

Request packet fields

Field	Type	Description
CallbackCommand	String	The callback command.
GroupId	String	The ID of the group that generates group messages.
Type	String	The type of the group that generates group messages, such as Public. For details, see Group Types.
From_Account	String	The UserID of the message sender.
Operator_Account	String	The UserID of the message initiator, based on which the system can identify whether the request is initiated by the admin.
Random	Integer	A 32-bit random number in the message sending request.
MsgSeq	Integer	The message sequence number, which is the unique UserID of a message.
MsgTime	Integer	The message sending timestamp corresponding to the backend server time.
MsgBody	Array	The message body. For details, see Message Format Description.

Response packet example

After data synchronization, the app backend sends a callback response packet.

{
    "ActionStatus": "OK",
    "ErrorInfo": "",
    "ErrorCode": 0 // The result in the response is ignored.
}

Response packet fields

Field	Type	Attribute	Description
ActionStatus	String	Required	The request processing result. OK: succeeded. FAIL: failed.
ErrorCode	Integer	Required	The error code. 0: ignore the result in the response.
ErrorInfo	String	Required	Error information.