| 摘要 |
A method, apparatus, and system are described for accessing networked devices without accessible network addresses via Virtual IP (VIP) addresses. The system consists of a first Device Services Controller (DSC), featuring a Host Controller component that can make available a virtual network interface and corresponding virtual IP address (VIP) and having a first conduit manager to create a first outgoing TCP/IP conduit connection to a device service manager (DSM). When networking traffic arrives at the virtual networking interface with the associated VIP, the Host Controller component automatically processes and forwards that traffic to the DSM. The DSM processes and relays traffic from the first outgoing TCP/IP conduitconnection to a second DSC, which has a Device Controller component and a second conduit manager to create a second direct outgoing TCP/IP conduit connection to the DSM. An IP redirector in the DSM receives communication traffic from the first established TCP/IP conduit connection from the first DSC and then routes the communication traffic down the second established TCP/IP conduit connection to the second DSC based on a Virtual IP address to real IP address mapping stored in the registry of the DSM. The Host Controller component processes and delivers the network traffic from the DSM to the appropriate local networked device and if appropriate send back any return traffic back to the DSM, which will return it to the first DSC for delivery to the originating network device, Using this mechanism, it is possible for two networked devices on separate networks to communicate even if there does not exist a route to the network address of the target device.
|
