Callback Before Online Group Message Push

Functional Description

Before a message is pushed to the client, the App business server can receive a request to send the message through this callback. The business server can intercept, modify, or add additional push information to the message as needed.

Precautions

• To enable the callback, you must configure the callback URL and turn on the switch corresponding to this callback protocol. See the Callback Description document for configuration methods.
• The callback direction is an HTTP/HTTPS POST request initiated by OpenIMServer to the App backend.
• After receiving the callback request, the App business server must respond within the timeout period.

Scenarios That May Trigger This Callback

• Group member quits the group.
• Group member is kicked out of the group.
• Group is dismissed.

Timing of Callback

• Before OpenIMServer prepares to push a message to the client.

Interface Description

Request URL Example

Here CallbackCommand is: callbackBeforeGroupOnlinePushCommand

{WEBHOOK_ADDRESS}/callbackBeforeGroupOnlinePushCommand?contenttype=json

Request Package Example

{
  "callbackCommand": "callbackBeforeGroupOnlinePushCommand",
  "platformID": 1,
  "platform": "iOS",
  "clientMsgID": "msg123",
  "sendID": "user789",
  "groupID": "group123",
  "contentType": 1,
  "sessionType": 2,
  "atUserIDList": ["user101", "user102"],
  "content": "Hello, this is a test message"
}

Request Package Field Description

Field	Type	Description
callbackCommand	string	Callback command, here it is the callback before pushing a group message
platformID	int	Platform ID (e.g., 1 for iOS, 2 for Android)
platform	string	Platform name (e.g., iOS, Android)
clientMsgID	string	Client message ID
sendID	string	Sender ID
groupID	string	Group ID (if the message is sent to a group)
contentType	int	Message content type ID
sessionType	int	Session type ID
atUserIDList	array	List of IDs of users being @'ed
content	string	Content of the sent message

Response Package Example

Allow Pushing

Allow the message to be pushed to the client.

{
  "actionCode": 0,
  "errCode": 0,
  "errMsg": "",
  "errDlt": "",
  "nextCode": "",
  "userIDList": ["user123", "user456"],
  "offlinePushInfo": {
    "title": "New Message",
    "desc": "You have a new message",
    "ex": "Extra push info",
    "iOSPushSound": "default",
    "iOSBadgeCount": true,
    "signalInfo": "Signal data"
  }
}

Response Package Field Description

Field	Type	Description
actionCode	0	Indicates whether the business system callback was executed correctly. 0 means the operation was successful.
errCode	5001	Custom error code, ranges from 5000-9999. Set when actionCode is not 0; set when nextCode is 1.
errMsg	"An error message"	Simple error message corresponding to the custom error code.
errDlt	"Detailed error information"	Detailed error information corresponding to the custom error code.
nextCode	1	Next execution instruction, 1 means refusing to continue execution, set when actionCode is 0.
userIDList	array	List of user IDs, indicating users allowed to receive the message.
offlinePushInfo	object	Offline push info object.