# API Notes: CFNetwork framework

The full API is described in Apple’s documentation, both the C and Objective-C APIs are available (but see the API Notes below).

These bindings are accessed through the `CFNetwork` package (that is, `import CFNetwork`).

## API Notes

- `CFHTTPReadStreamSetRedirectsAutomatically`

  This API was removed in macOS 10.15.

- `CFNetServiceGetProtocolSpecificInformation`

  This API was removed in macOS 10.15.

- `CFNetServiceSetProtocolSpecificInformation`

  This API was removed in macOS 10.15.

- `CFNetworkExecuteProxyAutoConfigurationScript` and `CFNetworkExecuteProxyAutoConfigurationURL`

  The `context` argument can be an arbitrary Python object.

- `CFHostSetClient`

  The `context` argument can be an arbitrary Python object, in particular the creation of a `CFHostClientContext` is performed by the bridge and is not exposed to Python.

- CFNetServicesSetClient`

  The `context` argument can be an arbitrary Python object, in particular the creation of a `CFNetServiceClientContext` is performed by the bridge and is not exposed to Python.