Drunk_bear64

public class ReceivedCookiesInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
        Response originalResponse = chain.proceed(chain.request());
        if (!originalResponse.headers("Set-Cookie").isEmpty()) {
            // ...
         }
        return originalResponse;
    }
}

OkHttpClient.Builder okHttpClient = new OkHttpClient().newBuilder();
okHttpClient.interceptors().add(new ReceivedCookiesInterceptor());
            
retrofit = new Retrofit.Builder()
                 .baseUrl(BASE_URL)
                 .client(okHttpClient.build())
                 .addConverterFactory(GsonConverterFactory.create())
                 .build();