Handle Cookies easily with Retrofit/OkHttp

AddCookiesInterceptor.java

/**
 * This interceptor put all the Cookies in Preferences in the Request.
 * Your implementation on how to get the Preferences MAY VARY.
 * <p>
 * Created by tsuharesu on 4/1/15.
 */
public class AddCookiesInterceptor implements Interceptor {

    @Override
    public Response intercept(Chain chain) throws IOException {
        Request.Builder builder = chain.request().newBuilder();
        HashSet<String> preferences = (HashSet) Preferences.getDefaultPreferences().getStringSet(Preferences.PREF_COOKIES, new HashSet<>());
        for (String cookie : preferences) {
            builder.addHeader("Cookie", cookie);
            Log.v("OkHttp", "Adding Header: " + cookie); // This is done so I know which headers are being added; this interceptor is used after the normal logging of OkHttp
        }

        return chain.proceed(builder.build());
    }
}

ReceivedCookiesInterceptor.java

/**
 * This Interceptor add all received Cookies to the app DefaultPreferences.
 * Your implementation on how to save the Cookies on the Preferences MAY VARY.
 * <p>
 * Created by tsuharesu on 4/1/15.
 */
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()) {
            HashSet<String> cookies = new HashSet<>();

            for (String header : originalResponse.headers("Set-Cookie")) {
              cookies.add(header);
            }

            Preferences.getDefaultPreferences().edit()
                    .putStringSet(Preferences.PREF_COOKIES, cookies)
                    .apply();
        }

        return originalResponse;
    }
}

RestClient.java

/**
 * Somewhere you create a new OkHttpClient and use it on all your requests.
 */
OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.interceptors().add(new AddCookiesInterceptor());
okHttpClient.interceptors().add(new ReceivedCookiesInterceptor());

Hey please can u provide an overall to how to implement this in singleton way.

Look elsewhere on how to use as a singleton. I use Dagger to inject my OkHttpClient, for example.

with lib 'com.squareup.okhttp3:okhttp-urlconnection:3.2.0' it as simple as just add
JavaNetCookieJar jncj = new JavaNetCookieJar(CookieHandler.getDefault());
OkHttpClient.Builder()
.cookieJar(jncj)
.build();

I had some problems with this implementation, because you send back the cookies exactly as you get them, but it can append that there are more cookies with the same name, in my case the server sent me two phpsessid and it ended up with Unauthorized user. We need a cookie manager so marcinOz implementation is more accurate. And I would add that this is also for older version of okhttp-urlconnection.

This works create. Thanks buddy.

Thanks

https://gist.github.com/nikhiljha/52d45ca69a8415c6990d2a63f61184ff

I made a one size fits all, drag and drop approach based off of your gist.

This will "just work" and shouldn't require any work on your part (I hope).

Enjoy!

Thank you nikhiliha & tsuharesu
Your code saved my day

Thanks!

cool

is that means the app runs without worrying statefull web app sessions?

for (String cookie : preferences) { builder.addHeader("Cookie", cookie); Log.v("OkHttp", "Adding Header: " + cookie); // This is done so I know which headers are being added; this interceptor is used after the normal logging of OkHttp }
so a request has multi Cookie ?

cool thanks

Hey bro session id getting refreshed again and again what might be the reason. ?

Thank you so muuuuuch! For some reason, answer from SO https://stackoverflow.com/a/36865953/2098493 didn't work for me and also https://github.com/franmontiel/PersistentCookieJar.

Your solution persists server request cookie even if app is destroyed! :) I'm so happy. Finally found the right one.

Kotlin version with helper methods to create OkHttp client and Retrofit instance: https://gist.github.com/nikhiljha/52d45ca69a8415c6990d2a63f61184ff#gistcomment-2310417

Thank

@arvi can you please let me know how can you do that. persists server request cookie even if app is destroyed!. This one

Please the cookies are of which type e.g strings e.t.c cos i need that to create a custom response for retrofit

How to get url in AddCookiesInterceptor

Thanks

I used above steps to store the cookie then add on request.
Worked on actively on login and continue use.
But once close and open the app not worked.
(Once restart the comes CSRF token invalid issue.)

https://github.com/manimaran96/Spell4Wiki/