The discovery messages contain essential specifics about the device or one of its services: its type, identifier, and a pointer (network location) to more detailed information. A control point can actively search for devices of interest or listen passively to Discovery Service messages. The device advertise its services to the network using SSDP alive messages. The discovery protocol or the Simple Service Discovery Protocol ( SSDP). DiscoveryĪfter device addressing, the next step into UPnP networking is device discovery. This can be achieved using a lookup into Dynamic Host Configuration Protocol ( DHCP) server or assign an IP address using AutoIP. To be part of the network, the device must have a unique IP address assigned. This point is related to device IP address assignment. The UPnP specification consists mainly of six phases: Addressing The UPnP is based on a client-server concept, where UPnP control points (clients) search for UPnP servers (devices) that provide different standard services. It involves a lot of standards and technologies such as: The UPnP architecture allows device-to-device networking of electronic devices such as mobile phones, personal computers, Smart TVs (Connected TV) and other type of home network appliance. The Universal Plug and Play ( UPnP) concept is a plug-and-play extension that is a technology for dynamically connecting devices to each other without the need for physical device configuration or user intervention. Universal Plug and Play (UPnP) Architecture overview What is the relation between UPnP and DLNA. Detailed information about Smart TV features such as Universal Plug and Play (UPNP) and Digital Living Network Alliance (DLNA)
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