# CustomRpcHeaders Field

Namespace: [Qlik.Engine.Communication.IO](https://help.qlik.com/en-US/sense-developer/November2024/Subsystems/NetSDKAPIref/Content/Qlik.Engine.Communication.IO.htm)  
Assembly: Qlik.Engine.dll

Dictionary containing custom headers that will be included in all JSON-RPC calls to the engine.

## Syntax

```
public static Dictionary<string, string> CustomRpcHeaders
```

## Returns

| Type | Description |
| --- | --- |
| System.Collections.Generic.Dictionary&lt;System.String, System.String&gt; |  |