How do you prevent Retrofit from automatically following a 302

Question

I have an authentication call that i\'m trying to make using Retrofit on Android. The call returns a 302 to either a success or failure page. The original 302 response brings ba

Answer 1

I was in a similar situation to yours. Basically all we need is to capture the "Set-Cookie" header that your server returns before redirecting. This is how I handled it using OkHTTP:

final OkHttpClient client = new OkHttpClient();
CookieHandler handler = client.getCookieHandler();
CookieManager manager = new CookieManager();
handler.setDefault(manager);

//boilerplate:
RequestBody formData = new FormEncodingBuilder()
        .add("req_username", username)
        .add("req_password", password).build();
Request request = new Request.Builder().url(LOGIN_URL).post(formData).build();
Response response = client.newCall(request).execute();
if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

// print our cookies:
List  cookies = manager.getCookieStore().getCookies();
for(HttpCookie cookie : cookies) {
    Log.v(TAG, cookie.getName() + "=" + cookie.getValue());
}