---
title: MCSessionSendDataMode.unreliable
framework: multipeerconnectivity
role: symbol
role_heading: Case
path: multipeerconnectivity/mcsessionsenddatamode/unreliable
---

# MCSessionSendDataMode.unreliable

Messages to peers should be sent immediately without socket-level queueing. If a message cannot be sent immediately, it should be dropped. The order of messages is not guaranteed.

## Declaration

```swift
case unreliable
```

## Discussion

Discussion Use this message type for data that ceases to be relevant if delayed, such as real-time gaming data.

## See Also

### Constants

- [MCSessionSendDataMode.reliable](multipeerconnectivity/mcsessionsenddatamode/reliable.md)