Get Message Extension for One-to-One and Group Chat

Retrieve the extension information of a specific message based on the Message ID.

Request Method

POST: https://data center domain/message/expansion/query.json

Rate Limit: 100 requests per second

Signature Rule: All server API requests require signature verification. For details, refer to API Request Signature.

Body Parameters

The HTTP request body data format is application/x-www-form-urlencoded, supporting the following HTTP form parameters:

Parameter	Type	Required	Description
msgUID	String	Yes	The unique identifier of the message, which can be obtained through the Post-messaging Callback feature. For details, refer to Post-messaging Callback.
pageNo	Int	No	Page number. By default, 300 extension entries are returned.

Request Example

POST /message/expansion/query.json HTTP/1.1
Host: api.rong-api.com
App-Key: uwd1c0sxdlx2
Nonce: 14314
Timestamp: 1585127132438
Signature: 890b422b75c1c5cb706e4f7921df1d94e69c17f4
Content-Type: application/x-www-form-urlencoded

msgUID=BRGM-DEN2-01E4-BN66

Response

The HTTP response body contains a JSON object with the following structure:

Return Value	Return Type	Description
code	Int	Return code. 200 indicates success.
extraContent	Object	The content of the message extension, represented as a JSON structure of Key-Value pairs, e.g., {"type":"3"}. The Key can be up to 32 characters long, supporting uppercase and lowercase English letters, numbers, and special characters + = - _. Chinese characters are not supported. The Value can be up to 4096 characters long.

Response Example

HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8

{
    "code": 200,
    "extraContent": {
        "kkk314": {
            "v": "vvv314",
            "ts": 33831605613
        },
        "kkk313": {
            "v": "vvv313",
            "ts": 33831605588
        }
    }
}