Download An Ambient Computing System
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Figure 4.5: MetaOS Edge SOAPServer maps this new address to the given port, and sends a response to the remote client containing this address in a deviceID message. The remote client can issue messages and participate as a MetaOS device. Messages sent asynchronously to this device first reach the SOAPServer device, which then consults its table to translate the given destination address to an IP address and port. The message is then delivered to the remote client using the same XML-RPC or SOAP-style calls. 4.4 Edge The ambient edges act as conduits for messages between the devices and the hub in an MetaOS domain. The edge initializes a connection to the hub, initializes devices, and routes messages between the devices and the hub. 46