# Sniffer disconnect client connection \[Rest API\]

**URL:** <https://discuss.elastic.co/t/sniffer-disconnect-client-connection-rest-api/212463>\
**Category:** Elasticsearch\
**Created:** [December 19, 2019, 9:45am UTC](https://discuss.elastic.co/t/sniffer-disconnect-client-connection-rest-api/212463 "2019-12-19T09:45:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![AsfK](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/asfk/32/58995_2.png) [@AsfK](https://discuss.elastic.co/u/AsfK)\
**Post date:** [December 19, 2019, 9:45am UTC](https://discuss.elastic.co/t/sniffer-disconnect-client-connection-rest-api/212463/1 "2019-12-19T09:45:14Z")

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Hi

I'm setting up a High Level Rest API conenction (7.4.\*) and all seems fine till I added a sniffer:

```
RestClientBuilder restClientBuilder = RestClient.builder(hosts)
		.setHttpClientConfigCallback(httpClientBuilder -> httpClientBuilder
				.setDefaultCredentialsProvider(credentialsProvider));
RestHighLevelClient restHighLevelClient = new RestHighLevelClient(restClientBuilder);

```

till this code all works fine and the connection stay established:

 ![withoutSniffer](https://us1.discourse-cdn.com/elastic/original/3X/f/c/fc964474489a73f479ffbf6b853b49ac525fc0a3.png)

**BUT** adding a sniffer cause connection refused after few minues (1-2):

`sniffer = Sniffer.builder(restHighLevelClient.getLowLevelClient()).build();`

 ![WithSnifferAfterFewminutes](https://us1.discourse-cdn.com/elastic/original/3X/c/f/cf037920123dfe15462ad52da1fdb756bfaa8dca.png)

Any idea why it's happen and what would I do?

Maven ES Version: 7.4.1  
ES on machine: 7.4.2

Thanks!

---

<div class="post-metadata">

**Author:** ![AsfK](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/asfk/32/58995_2.png) [@AsfK](https://discuss.elastic.co/u/AsfK)\
**Post date:** [December 24, 2019, 9:26am UTC](https://discuss.elastic.co/t/sniffer-disconnect-client-connection-rest-api/212463/2 "2019-12-24T09:26:44Z")

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Someone?

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<div class="post-metadata">

**Author:** ![AsfK](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/asfk/32/58995_2.png) [@AsfK](https://discuss.elastic.co/u/AsfK)\
**Post date:** [January 7, 2020, 6:21am UTC](https://discuss.elastic.co/t/sniffer-disconnect-client-connection-rest-api/212463/3 "2020-01-07T06:21:25Z")

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I got an answer from ES support,

There is a bug in 7.4.1, please use 7.4.2.. just FYI..

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<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:** [February 4, 2020, 6:26am UTC](https://discuss.elastic.co/t/sniffer-disconnect-client-connection-rest-api/212463/4 "2020-02-04T06:26:40Z")

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