# UnreliableRemoteEvent

Roblox Engine API class from Roblox Studio 0.744.0.7441077 (version-7aaa6838d36c4448).

- Inherits from, nearest first: [BaseRemoteEvent](https://rapi.sleaze.dev/classes/BaseRemoteEvent.md), [Instance](https://rapi.sleaze.dev/classes/Instance.md), [Object](https://rapi.sleaze.dev/classes/Object.md)
- Memory category: Instances
- HTML page: https://rapi.sleaze.dev/classes/UnreliableRemoteEvent/
- Roblox documentation: https://create.roblox.com/docs/reference/engine/classes/UnreliableRemoteEvent

An object which facilitates asynchronous, unordered and unreliable, one-way communication across the client-server boundary. Scripts firing a [`UnreliableRemoteEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) do not yield.

## Methods

### FireAllClients

```luau
UnreliableRemoteEvent:FireAllClients(...: any)
```

- Tags: Capabilities: RemoteEvent

Fires the [`OnClientEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) event for all connected clients. Has a 1000 byte limit to the payload of the event. Events with larger payloads are dropped.

Parameters:

- `arguments`: Values to pass to all [`OnClientEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) events connected to the same [`UnreliableRemoteEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md).

### FireClient

```luau
UnreliableRemoteEvent:FireClient(player: Player, ...: any)
```

- Tags: Capabilities: RemoteEvent

Fires the [`OnClientEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) event for a specific client. Has a 1000 byte limit to the payload of the event. Events with larger payloads are dropped.

Parameters:

- `player`: The client of the [`Player`](https://rapi.sleaze.dev/classes/Player.md) to fire the event to.
- `arguments`: Values to pass to [`OnClientEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) events connected to the same [`UnreliableRemoteEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md).

### FireServer

```luau
UnreliableRemoteEvent:FireServer(...: any)
```

- Tags: Capabilities: RemoteEvent

Fires the [`OnServerEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) event on the server from one connected client. Has a 1000 byte limit to the payload of the event. Events with larger payloads are dropped.

Parameters:

- `arguments`: Values to pass to [`OnServerEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) events connected to the same [`UnreliableRemoteEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md).

## Events

### OnClientEvent

```luau
UnreliableRemoteEvent.OnClientEvent: RBXScriptSignal<(...: any)>
```

- Tags: Capabilities: RemoteEvent

Fires from a [`LocalScript`](https://rapi.sleaze.dev/classes/LocalScript.md) when either [`FireClient()`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) or [`FireAllClients()`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) is called on the same [`UnreliableRemoteEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) instance from a [`Script`](https://rapi.sleaze.dev/classes/Script.md), although this firing is not guaranteed even if one of the above methods are called. This can occur due to packet loss or to maintain optimal engine performance.

### OnRemoteServerEvent

```luau
UnreliableRemoteEvent.OnRemoteServerEvent: RBXScriptSignal<(...: any)>
```

- Tags: Hidden, Roblox engine security, Capabilities: RemoteEvent

### OnServerEvent

```luau
UnreliableRemoteEvent.OnServerEvent: RBXScriptSignal<(player: Player, ...: any)>
```

- Tags: Capabilities: RemoteEvent

Fires from a [`Script`](https://rapi.sleaze.dev/classes/Script.md) when [`FireServer()`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) is called on the same [`UnreliableRemoteEvent`](https://rapi.sleaze.dev/classes/UnreliableRemoteEvent.md) instance from a [`LocalScript`](https://rapi.sleaze.dev/classes/LocalScript.md), although this firing is not guaranteed even if the above methods is called. This can occur due to packet loss or to maintain optimal engine performance.

## Inherited members

- From [Instance](https://rapi.sleaze.dev/classes/Instance.md): `Archivable`, `archivable`, `Attributes`, `AttributesReplicate`, `AttributesSerialize`, `HistoryId`, `Name`, `Parent`, `PredictionMode`, `PropertyStatusStudio`, `RobloxLocked`, `SerializedOverrides`, `SourceAssetId`, `Tags`, `UniqueId`, `numExpectedDirectChildren`, `DataCost`, `Capabilities`, `DefinesCapabilities`, `IsInSandbox`, `Sandboxed`, `AddTag`, `ClearAllChildren`, `Clone`, `Destroy`, `FindFirstAncestor`, `FindFirstAncestorOfClass`, `FindFirstAncestorWhichIsA`, `FindFirstChild`, `FindFirstChildOfClass`, `FindFirstChildWhichIsA`, `FindFirstDescendant`, `GetActor`, `GetAttribute`, `GetAttributeChangedSignal`, `GetAttributes`, `GetChildren`, `GetDebugId`, `GetDescendants`, `GetFullName`, `GetStyled`, `GetStyledPropertyChangedSignal`, `GetTags`, `HasTag`, `IsAncestorOf`, `IsDescendantOf`, `IsPropertyModified`, `QueryDescendants`, `RemoveTag`, `ResetPropertyToDefault`, `SetAttribute`, `WaitForChild`, `Remove`, `children`, `clone`, `destroy`, `findFirstChild`, `getChildren`, `isDescendantOf`, `remove`, `AncestryChanged`, `AttributeChanged`, `ChildAdded`, `ChildRemoved`, `DescendantAdded`, `DescendantRemoving`, `Destroying`, `StyledPropertiesChanged`, `childAdded`
- From [Object](https://rapi.sleaze.dev/classes/Object.md): `ClassName`, `className`, `GetPropertyChangedSignal`, `IsA`, `isA`, `Changed`