Download binary fie from OKHTTP-open source projects square/okhttp

I am using OKHTTP client for networking in my android application.

This example shows how to upload binary file. I would like to know how to get inputstream of binary file downloading with OKHTTP client.

Here is the listing of the example :

public class InputStreamRequestBody extends RequestBody {

private InputStream inputStream;
private MediaType mediaType;

public static RequestBody create(final MediaType mediaType, final InputStream inputStream) {


    return new InputStreamRequestBody(inputStream, mediaType);
}

private InputStreamRequestBody(InputStream inputStream, MediaType mediaType) {
    this.inputStream = inputStream;
    this.mediaType = mediaType;
}

@Override
public MediaType contentType() {
    return mediaType;
}

@Override
public long contentLength() {
    try {
        return inputStream.available();
    } catch (IOException e) {
        return 0;
    }
}

@Override
public void writeTo(BufferedSink sink) throws IOException {
    Source source = null;
    try {
        source = Okio.source(inputStream);
        sink.writeAll(source);
    } finally {
        Util.closeQuietly(source);
    }
 }
}

Current code for simple get request is:

OkHTTPClient client = new OkHttpClient();
request = new Request.Builder().url("URL string here")
                    .addHeader("X-CSRFToken", csrftoken)
                    .addHeader("Content-Type", "application/json").build();
            response = getClient().newCall(request).execute();

Now how do I convert the response to Inputstream. Something similar to response from Apache HTTP Client like this for OKHTTP response:

InputStream is = response.getEntity().getContent();

EDIT:

Accepted answer from below. My modified code:

    request = new Request.Builder().url(urlString).build();
    response = getClient().newCall(request).execute();

    InputStream is = response.body().byteStream();

    BufferedInputStream input = new BufferedInputStream(is);
    OutputStream output = new FileOutputStream(file);

    byte[] data = new byte[1024];

    long total = 0;

    while ((count = input.read(data)) != -1) {
        total += count;
        output.write(data, 0, count);
    }

    output.flush();
    output.close();
    input.close();