> ## Documentation Index
> Fetch the complete documentation index at: https://easyaf.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# ResponseSnapshotHandlerBase

> Base class for Response Snapshot handlers that enable testing with real captured HTTP responses.

## Definition

**Assembly:** CloudNimble.Breakdance.Assemblies.dll

**Namespace:** CloudNimble.Breakdance.Assemblies.Http

**Inheritance:** System.Net.Http.DelegatingHandler

## Syntax

```csharp theme={"dark"}
CloudNimble.Breakdance.Assemblies.Http.ResponseSnapshotHandlerBase
```

## Summary

Base class for Response Snapshot handlers that enable testing with real captured HTTP responses.

## Remarks

Response Snapshots are real HTTP responses captured from actual API calls and stored as files.
This allows testing against real response data without hitting live endpoints or polluting
third-party services with test data.

Use [ResponseSnapshotCaptureHandler](/breakdance/api-reference/CloudNimble/Breakdance/Assemblies/Http/ResponseSnapshotCaptureHandler) to capture responses from live APIs,
then use [ResponseSnapshotReplayHandler](/breakdance/api-reference/CloudNimble/Breakdance/Assemblies/Http/ResponseSnapshotReplayHandler) to replay those responses in tests.

## Constructors

### <Icon icon="hammer" iconType="duotone" color="#419AC5" size={24} className="mr-2" /> .ctor

Creates a new [ResponseSnapshotHandlerBase](/breakdance/api-reference/CloudNimble/Breakdance/Assemblies/Http/ResponseSnapshotHandlerBase) with the specified snapshot storage path.

#### Syntax

```csharp theme={"dark"}
public ResponseSnapshotHandlerBase(string responseSnapshotsPath)
```

#### Parameters

| Name                    | Type     | Description                                           |
| ----------------------- | -------- | ----------------------------------------------------- |
| `responseSnapshotsPath` | `string` | Root folder path for storing response snapshot files. |

#### Examples

```csharp theme={"dark"}
var handler = new ResponseSnapshotReplayHandler("TestData/Snapshots");
var client = new HttpClient(handler);
```

## Properties

### <Icon icon="tag" iconType="duotone" color="#419AC5" size={24} className="mr-2" /> ResponseSnapshotsPath

Gets the root folder path where response snapshot files are stored.

#### Syntax

```csharp theme={"dark"}
public string ResponseSnapshotsPath { get; private set; }
```

#### Property Value

Type: `string`

## Methods

### <Icon icon="thumbtack" iconType="duotone" color="#419AC5" size={24} className="mr-2" /> GetFileExtensionString

Maps the MediaType header in the [HttpRequestMessage](https://learn.microsoft.com/dotnet/api/system.net.http.httprequestmessage) to a known list of file extensions.

#### Syntax

```csharp theme={"dark"}
public static string GetFileExtensionString(System.Net.Http.HttpRequestMessage request)
```

#### Parameters

| Name      | Type                                 | Description             |
| --------- | ------------------------------------ | ----------------------- |
| `request` | `System.Net.Http.HttpRequestMessage` | The request to examine. |

#### Returns

Type: `string`
The file extension string for the request's Accept header.

#### Exceptions

| Exception               | Description                  |
| ----------------------- | ---------------------------- |
| `ArgumentNullException` | Thrown when request is null. |

### <Icon icon="thumbtack" iconType="duotone" color="#419AC5" size={24} className="mr-2" /> GetResponseMediaTypeString

Maps the file extension in the specified path to a known list of media types.

#### Syntax

```csharp theme={"dark"}
public static string GetResponseMediaTypeString(string filePath)
```

#### Parameters

| Name       | Type     | Description               |
| ---------- | -------- | ------------------------- |
| `filePath` | `string` | The file path to examine. |

#### Returns

Type: `string`
The MIME type string for the file extension.