# Simple example for using curl to log a message to Logstash using the HTTP input plugin?

**URL:** <https://discuss.elastic.co/t/simple-example-for-using-curl-to-log-a-message-to-logstash-using-the-http-input-plugin/327964>\
**Category:** Logstash\
**Created:** [March 17, 2023, 6:26pm UTC](https://discuss.elastic.co/t/simple-example-for-using-curl-to-log-a-message-to-logstash-using-the-http-input-plugin/327964 "2023-03-17T18:26:41Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [March 17, 2023, 11:03pm UTC](https://discuss.elastic.co/t/simple-example-for-using-curl-to-log-a-message-to-logstash-using-the-http-input-plugin/327964/2 "2023-03-17T23:03:39Z")

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> [@jba](#):
>
> "error"=\>{"type"=\>"mapper\_parsing\_exception", "reason"=\>"object mapping for [host] tried to parse field [host] as object, but found a concrete value"}}}`

See [this](https://discuss.elastic.co/t/getting-illegal-state-exception-error-while-pushing-logs-to-elasticsearch/290029/2) thread, which explains the issue and discusses possible fixes.

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