IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Websocket output plugin

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Websocket output plugin

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Plugin version: v3.1.0
Released on: 2024-01-11
Changelog

For other versions, see the Versioned plugin docs.

Installation

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For plugins not bundled by default, it is easy to install by running bin/logstash-plugin install logstash-output-websocket. See Working with plugins for more details.

Getting Help

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For questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github. For the list of Elastic supported plugins, please consult the Elastic Support Matrix.

Description

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This output runs a websocket server and publishes any messages to all connected websocket clients.

You can connect to it with ws://<host\>:<port\>/

If no clients are connected, any messages received are ignored.

Websocket Output Configuration Options

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This plugin supports the following configuration options plus the Common Options described later.

Setting	Input type	Required
`host`	string	No
`port`	number	No

Also see Common Options for a list of options supported by all output plugins.

`host`

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Value type is string
Default value is "0.0.0.0"

The address to serve websocket data from

`port`

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Value type is number
Default value is 3232

The port to serve websocket data from

Common Options

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The following configuration options are supported by all output plugins:

Setting	Input type	Required
`codec`	codec	No
`enable_metric`	boolean	No
`id`	string	No

`codec`

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Value type is codec
Default value is "plain"

The codec used for output data. Output codecs are a convenient method for encoding your data before it leaves the output without needing a separate filter in your Logstash pipeline.

`enable_metric`

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Value type is boolean
Default value is true

Disable or enable metric logging for this specific plugin instance. By default we record all the metrics we can, but you can disable metrics collection for a specific plugin.

`id`

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Value type is string
There is no default value for this setting.

Add a unique ID to the plugin configuration. If no ID is specified, Logstash will generate one. It is strongly recommended to set this ID in your configuration. This is particularly useful when you have two or more plugins of the same type. For example, if you have 2 websocket outputs. Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.

output {
  websocket {
    id => "my_plugin_id"
  }
}

Variable substitution in the id field only supports environment variables and does not support the use of values from the secret store.

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