Submit Feedback
Legacy Knowledge Base
Published Sep. 10, 2025

What file upload protocol is used by Liferay?

Written By

Jorge Diaz

How To articles are not official guidelines or officially supported documentation. They are community-contributed content and may not always reflect the latest updates to Liferay DXP. We welcome your feedback to improve How To articles!

While we make every effort to ensure this Knowledge Base is accurate, it may not always reflect the most recent updates or official guidelines.We appreciate your understanding and encourage you to reach out with any feedback or concerns.

Legacy Article

You are viewing an article from our legacy "FastTrack" publication program, made available for informational purposes. Articles in this program were published without a requirement for independent editing or verification and are provided"as is" without guarantee.

Before using any information from this article, independently verify its suitability for your situation and project.

Issue

We need information about the file upload protocol that is used by Liferay in the file upload functionality from the users' browsers.

This information is necessary to fix some network issues in the firewall and other related elements.

Environment

  • Any Liferay version

Resolution

In order to upload files from users' browsers, Liferay uses the Apache Commons FileUpload library (external link)

The Apache Commons FileUpload library uploads files using the HTTP protocol, following the RFC 1867, "Form-based File Upload in HTML" (external link), that is, HTTP POST requests with "multipart/form-data".

For example, this library is used at the following Liferay code of the file upload functionality:

Additional Information

 

 

Did this article resolve your issue ?
Legacy Knowledge Base
Did this article resolve your issue ?