HDMLHandheld Device Markup Language is used to format content for Web-enabled mobile phones. HDML is Openwave's (formerly known as phone.com) proprietary language, which can only be viewed on mobile phones that use Openwave browsers.
HDML came before the WAP standard was created. It uses Openwave's Handheld Device Transport Protocol (HDTP), instead of WAP.
Phones access HDML sites the following way:
Once the URL is typed into the phone, the phone sends the request to Openwave's UP.Link gateway. The gateway sends a HTTP request to the Web server. The Web servers returns the page via HTTP back to the Openwave UP.Link gateway. The gateway sends the data via HDTP to the wireless carrier's network and down to the phone.
HDML and the Openwave gateway are most popular throughout North America. In Europe, WML and the Nokia WAP gateway and browser are the emerging standard. However, some versions of Openwave browsers do interpret basic WML.
To serve HDML pages, administrators must add the text/x-hdml mime type to their Web servers.
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
Webopedia's student apps roundup will help you to better organize your class schedule and stay on top of assignments and homework. Read More »List of Free Shorten URL Services
A URL shortener is a way to make a long Web address shorter. Try this list of free services. Read More »Top 10 Tech Terms of 2015
The most popular Webopedia definitions of 2015. Read More »
The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »Computer Architecture Study Guide
Webopedia's computer architecture study guide is an introduction to system design basics. It describes parts of a computer system and their... Read More »What Are Network Topologies?
Network Topology refers to layout of a network. How different nodes in a network are connected to each other and how they communicate is... Read More »