HTTP If-Match Header

By: Dusty Arlia
Published on Monday, June 16, 2014, 06:49 PM
Last Updated on Saturday, July 11, 2015 at 2:35 PM
Total Updates: 2

The value of the If-Match HTTP header tells the web server to only perform the action if the client supplied entity matches the same entity on itself. This is mainly for request methods like PUT to only update a resource if it has not been modified since the user last updated it.

Here is an example:

If-Match: "737060cd8c284d8af7ad3082f209582d"