> ## Documentation Index
> Fetch the complete documentation index at: https://cometchat-013b37f0.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Transient Messages

Transient messages are messages that are sent in real-time only and are not saved or tracked anywhere. The receiver of the message will only receive the message if he is online and these messages cannot be retrieved later.

## Send a Transient Message

You can use the `sendTransientMessage()` method to send a transient message to a user or in a group. The receiver will receive this information in the `onTransientMessageReceived()` method of the `MessageListener` class. In order to send the transient message, you need to use the `TransientMessage` class.

<Tabs>
  <Tab title="Swift">
    ```swift theme={null}
    let receiverId = "cometchat-uid-2";
    let data = ["LIVE_REACTION","heart"]
    let transientMessage = TransientMessage(receiverID: receiverId, receiverType: .user, data: data)
    CometChat.sendTransientMessage(message: transientMessage)
    ```
  </Tab>

  <Tab title="Objective C">
    ```objc theme={null}
    NSString *receiverId = @"cometchat-uid-2";
    NSArray *arr = [[NSArray arrayWithObjects: @"LIVE_REACTION",@"heart"];
    let transientMessage = TransientMessage(receiverID: receiverId, receiverType: .user, data: data)
    CometChat.sendTransientMessage(message: transientMessage)
    ```
  </Tab>
</Tabs>

## Real-time Transient Messages

*In other words, as a recipient, how do I know when someone sends a transient message?*

In order to receive incoming transient messages, you must add protocol conformance `CometChatMessageDelegate` as Shown Below :

<Tabs>
  <Tab title="Swift">
    ```swift theme={null}
    extension ViewController: CometChatMessageDelegate {
      public func onTransisentMessageReceived(_ message: TransientMessage) {
            print("TransientMessage received successfully: " + message.stringValue())
        }
    }
    ```
  </Tab>

  <Tab title="Objective C">
    ```objc theme={null}
    -(void)onTransisentMessageReceived:(TransientMessage *)message {
        NSlog(@"TransientMessage received successfully:%@", [message stringValue]);
    }
    ```
  </Tab>
</Tabs>

The `TransientMessage` class consists of the below parameters:

| Parameter        | Information                                                                                                                          |
| ---------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
| **sender**       | An object of the `User` class holding all the information. related to the sender of the transient message.                           |
| **receiverId**   | Unique Id of the receiver. This can be the Id of the group or the user the transient message is sent to.                             |
| **receiverType** | This parameter indicates if the transient message is to be sent to a user or a group. The possible values are: 1. `.user` 2.`.group` |
| **data**         | A Dictionary to provide data.                                                                                                        |