This plugin was made to dispatch an action calling a URL. It could be useful to integrate (call-out to) some kind of systems or process.

Basically it executes a request to a URL with the build parameters.

The request is made as a job execution in Jenkins and depending of the HTTP response the job could be marked as failed (configurable). For example, responses such as 404 and 500 could make the job fail. When a job fails it will log the response to help identify the problem.

The request may be as an HTTP GET or POST mode, by choosing the HTTP mode. If it was not informed, it will use the default from global settings whose default is POST.  

Configure Global Settings

Configure Build Step in your Jenkins job

HTTP Request Parameters

Parameters are escaped which means if you try to pass another value inside a value, it will not happen.

In the example below, the key "name" will be passed with a value of "jenkins&os=linux". Note that "os" is not a parameter - it is part of the value). At the HTTP server-side no parameter named "os" will exist. 

Every execution will log all parameters. Be careful to not pass private information such as passwords or personal information.  

Change Log

https://github.com/jenkinsci/http-request-plugin/releases