# Transport client backward compatibility

**URL:** https://discuss.elastic.co/t/transport-client-backward-compatibility/49157
**Category:** Elasticsearch
**Created:** [May 4, 2016, 11:22am UTC](https://discuss.elastic.co/t/transport-client-backward-compatibility/49157 "2016-05-04T11:22:18Z")
**Posts on this page:** 5
**Page:** 1

<div class="post-metadata">

### Author: ![Shoham\_Ben\_Shitrit](https://avatars.discourse-cdn.com/v4/letter/s/ba9def/32.png) [@Shoham\_Ben\_Shitrit](https://discuss.elastic.co/u/Shoham_Ben_Shitrit)
#### Post date: [May 4, 2016, 11:22am UTC](https://discuss.elastic.co/t/transport-client-backward-compatibility/49157/1 "2016-05-04T11:22:18Z")

</div>

Will 2.2/2.3 Elastic Java transport client work on 1.5.1/1.7 versions?  
And the same in 5, will it have backward compatibility for versions 2.x and 1.x?

---

<div class="post-metadata">

### Author: ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [May 4, 2016, 11:37am UTC](https://discuss.elastic.co/t/transport-client-backward-compatibility/49157/2 "2016-05-04T11:37:33Z")

</div>

No.

For 5.0 we will release a REST java client.

---

<div class="post-metadata">

### Author: ![Shoham\_Ben\_Shitrit](https://avatars.discourse-cdn.com/v4/letter/s/ba9def/32.png) [@Shoham\_Ben\_Shitrit](https://discuss.elastic.co/u/Shoham_Ben_Shitrit)
#### Post date: [May 4, 2016, 11:59am UTC](https://discuss.elastic.co/t/transport-client-backward-compatibility/49157/3 "2016-05-04T11:59:11Z")

</div>

OK thank you, so for now if I want multiple versions support I'm better off with regular HTTP requests

---

<div class="post-metadata">

### Author: ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [May 4, 2016, 12:22pm UTC](https://discuss.elastic.co/t/transport-client-backward-compatibility/49157/4 "2016-05-04T12:22:55Z")

</div>

Yes. I ended up building my own client which covers only a few APIs I was needing.

[https://github.com/dadoonet/fscrawler/tree/master/src/main/java/fr/pilato/elasticsearch/crawler/fs/client](https://github.com/dadoonet/fscrawler/tree/master/src/main/java/fr/pilato/elasticsearch/crawler/fs/client)

Not ideal... I'll definitely replace all that when the official REST client will be out.

---

<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 10:54pm UTC](https://discuss.elastic.co/t/transport-client-backward-compatibility/49157/5 "2017-07-05T22:54:00Z")

</div>