Plug and play device redirection for remote systems
First Claim
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1. A method of supporting a client device, the method comprising:
- recognizing the client device as connected to the client computer, wherein the client device is connected to a remote client computer, and wherein the client computer is communicatively connected to a server computer;
installing a real device driver at the client computer;
sending device specific information related to the client device to the server computer to allow for the creation of a remote device instance on the server computer; and
receiving redirected I/O request packet (IRP) commands from the server computer at the remote client computer to control the client device, wherein the client device is identified as the remote device instance in I/O control (IOCTL) code in the IRP commands, wherein the redirected IRP commands from the server computer bypass the real device driver and directly control the client device.
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Abstract
A remote access system connects a server computer with one or more client computers, where devices are connected locally at the client computers. The devices are recognized by the client computers and a device driver is provided for each connected and recognized device. A virtual driver is created at the server computer from information specific to the device, such that the virtual driver acts as an actual driver to an application on the server computer. The application through the virtual driver is able to recognize and provide commands to the connected device.
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Citations
16 Claims
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1. A method of supporting a client device, the method comprising:
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recognizing the client device as connected to the client computer, wherein the client device is connected to a remote client computer, and wherein the client computer is communicatively connected to a server computer; installing a real device driver at the client computer; sending device specific information related to the client device to the server computer to allow for the creation of a remote device instance on the server computer; and receiving redirected I/O request packet (IRP) commands from the server computer at the remote client computer to control the client device, wherein the client device is identified as the remote device instance in I/O control (IOCTL) code in the IRP commands, wherein the redirected IRP commands from the server computer bypass the real device driver and directly control the client device. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling a device connected to a client computer by a server computer comprising:
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receiving at the server computer, a device notification identifying that a device is connected to the client computer; receiving, at the server computer, information specifically related to the device; creating a remote device instance at the server computer, wherein the remote device instance is specific to the device; establishing communication between the client computer and server computer through a virtual channel; and communicating I/O request packet (IRP) commands from the server computer to the device through the virtual channel, wherein the client device is identified as the remote device instance in I/O control (IOCTL) code in the IRP commands, wherein the communicated IRP commands from the server computer bypass a real device driver at the client computer and directly control the device. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A remote access system comprising:
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a server computer; a client computer supported by the server computer; a device connected to the client computer; a device driver specific to the device and installed in the client computer; and a remote device instance in the server computer that is created based on the device, and acts as the device driver in communicating with an application in the server computer, the application providing I/O request packet (IRP) commands to the remote device instance to control the device, wherein the client device is identified as the remote device instance in I/O control (IOCTL) code in the IRP commands and wherein the IRP commands from the server computer bypass a real device driver at the client computer and directly control the client device. - View Dependent Claims (13, 14, 15, 16)
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Specification