Retain Cookie during redirect. Ref: http://stackoverflow.com/questions/1621499/why-cant-i-set-a-cookie-and-redirect @okhttp

CookieRedirectInterceptor.java

import java.io.IOException;

import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;

/**
 * Created by sha on 23/1/16.
 */
public class CookieRedirectInterceptor implements Interceptor {

    String cookies = "";
    String redirectURL = "";

    @Override
    public Response intercept(Chain chain) throws IOException {
        Request request = chain.request();
        Response response = null;

        if (request.url().toString().equals(redirectURL)) {
            Request requestWithCookies = request.newBuilder()
                    .addHeader("Cookie", cookies).build();

            response = chain.proceed(requestWithCookies);
        } else {
            response = chain.proceed(request);
            if (response.isRedirect()) {
                this.redirectURL = response.header("Location", "");
                this.cookies = response.header("Set-Cookie", "");
            }
        }
        
        return response;
    }
}