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Web Services Dynamic Discovery

Overview#

Web Services Dynamic Discovery (WS-Discovery) is a technical WS-Specifications that defines a multicast Discovery Mechanism protocol to locate services on a Local Area Network.

Web Services Dynamic Discovery operates over TCP and UDP port 3702 and uses IP multicast address 239.255.255.250.

Web Services Dynamic Discovery the name suggests, the actual communication between nodes is done using web services standards, notably SOAP-over-UDP.

Various components in Microsoft's Windows Vista operating system use WS-Discovery, e.g. "People near me". WS-Discovery is an integral part of Windows Rally technologies and Devices Profile for Web Services.

Web Services Dynamic Discovery is the component WSDMON in Windows 7 and later Windows Clients automatically discover WSD-enabled network printers, which show in Network in Windows Explorer, and can be installed by double-clicking on them. In Windows 8 or later installation is automatic. WS-Discovery is enabled by default in networked HP printers since circa 2008.

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