Pulling the Message Extension of a One-to-One Message

Feature Overview
App admins and conversation members can pull the message extension of a one-to-one message. Message extension is a set of custom key-value pairs.
Note
To use this feature, you need to purchase the Premium edition and enable the Set message extension feature on the Login and Message page in the Chat console.
Up to 300 key-value pairs can be set for each one-to-one message.
For one-to-one messages for which key-value pairs are set, they need to be specified to support message extension when being sent. For operation details, see Sending One-to-One Messages to One User.
Sample request URL
https://xxxxxx/v4/openim_msg_ext_http_svc/get_key_values?sdkappid=88888888&identifier=admin&usersig=xxx&random=99999999&contenttype=json
Request parameters
The following table describes the modified parameters when this API is called. For other parameters, see RESTful API Overview.
Parameter
Description
xxxxxx
Domain name corresponding to the country/region where your SDKAppID is located.
China: console.tim.qq.com
Singapore: adminapisgp.im.qcloud.com
Seoul: adminapikr.im.qcloud.com
Frankfurt: adminapiger.im.qcloud.com
Silicon Valley: adminapiusa.im.qcloud.com
Jakarta: adminapiidn.im.qcloud.com
v4/openim_msg_ext_http_svc/get_key_values
Request API
sdkappid
SDKAppID assigned by the Chat console when an app is created
identifier
App admin account. For more information, see the App Admin section in Login Authentication.
usersig
Signature generated by the app admin account. For details, see Generating UserSig.
random
A random 32-bit unsigned integer ranging from 0 to 4294967295.
contenttype
Request format, which should always be json.
Maximum call frequency
200 calls per second
Sample request
Basic format
Pull the message extension of a one-to-one message whose MsgKey is 44739199_12_1665388280:
{
    "From_Account": "62768",
    "To_Account": "116400",
    "MsgKey": "44739199_12_1665388280"
}
Pull the message extension of a one-to-one message whose MsgKey is 44739199_12_1665388280 and Seq is greater than or equal to 2:
{
    "From_Account": "62768",
    "To_Account": "116400",
    "MsgKey": "44739199_12_1665388280",
    "StartSeq": 2
}
Request fields
Field
Type
Required
Description
From_Account
String
No
UserID of the sender (used to specify the message sender)
To_Account
String
Yes
UserID of the recipient
MsgKey
String
Yes
Unique identifier of the one-to-one message. For how to obtain the MsgKey of the message, see the API for sending one-to-one messages to one user.
StartSeq
Integer
No
Message extension will be pulled for messages whose Seq is greater than or equal to StartSeq.
Sample response
{
    "ErrorCode": 0,
    "ErrorInfo": "",
    "ActionStatus": "OK",
    "CompleteFlag": 1,
    "LatestSeq": 2,
    "ClearSeq": 0,
    "ExtensionList": [
        {
            "Key": "k1",
            "Value": "v1",
            "Seq": 1
        },
        {
            "Key": "k2",
            "Value": "v2",
            "Seq": 1
        },
        {
            "Key": "k3",
            "Value": "v3",
            "Seq": 2
        }
    ]
}
Response fields
Field
Type
Description
ActionStatus
String
Request result. OK: successful. FAIL: failed
ErrorCode
Integer
Error code. 0: Successful. Other values: Failed
ErrorInfo
String
Error information
ExtensionList
Array
List of key-value pairs returned, where the key-value pairs are sorted by Seq. Up to 200 key-value pairs can be returned per pull. If there are more than 200 key-value pairs, they need to be pulled in batches based on StartSeq.
CompleteFlag
Integer
1: All key-value pairs are returned. 0: Not all key-value pairs are returned.
LatestSeq
Integer
Latest Seq of the backend, which is the maximum value of Seq among all key-value pairs.
ClearSeq
Integer
Seq for the clearing operation. All key-value pairs whose Seq is less than or equal to ClearSeq must be deleted locally on the client.
Error Codes
The returned HTTP status code for this API is always 200 unless a network error (such as error 502) occurs. The specific error code and details can be found in the response fields ErrorCode and ErrorInfo respectively.
For public error codes (60000 to 79999), see Error Codes.
The following table describes the error codes specific to this API:
Error Code
Description
10002
Internal server error. Try again.
10004
Invalid parameter. Check the error description and troubleshoot the issue.
10008
Invalid request: The request is not an Premium edition plan request.
23004
The one-to-one message does not exist.

Feature Overview
Error Codes

Parameter	Description
xxxxxx	Domain name corresponding to the country/region where your SDKAppID is located. China: `console.tim.qq.com` Singapore: `adminapisgp.im.qcloud.com` Seoul: `adminapikr.im.qcloud.com` Frankfurt: `adminapiger.im.qcloud.com` Silicon Valley: `adminapiusa.im.qcloud.com` Jakarta: `adminapiidn.im.qcloud.com`
v4/openim_msg_ext_http_svc/get_key_values	Request API
sdkappid	SDKAppID assigned by the Chat console when an app is created
identifier	App admin account. For more information, see the App Admin section in Login Authentication.
usersig	Signature generated by the app admin account. For details, see Generating UserSig.
random	A random 32-bit unsigned integer ranging from 0 to 4294967295.
contenttype	Request format, which should always be `json`.

Field	Type	Required	Description
From_Account	String	No	`UserID` of the sender (used to specify the message sender)
To_Account	String	Yes	`UserID` of the recipient
MsgKey	String	Yes	Unique identifier of the one-to-one message. For how to obtain the `MsgKey` of the message, see the API for sending one-to-one messages to one user.
StartSeq	Integer	No	Message extension will be pulled for messages whose `Seq` is greater than or equal to `StartSeq`.

Error Code	Description
10002	Internal server error. Try again.
10004	Invalid parameter. Check the error description and troubleshoot the issue.
10008	Invalid request: The request is not an Premium edition plan request.
23004	The one-to-one message does not exist.