Method and apparatus for virtualizing hardware dongle over a wireless connection
View Patent ↗In a computer system configured to handle I/O signals received by the computer system from input devices and/or output signals output by the computer system, a virtual attachment module includes logic for selecting such that program code for coupling can alter the operating system's selection of I/O devices used for particular I/O device operations, coupling to a wireless I/O device at least for determining whether the wireless I/O device is available, and causing redirection of I/O signals destined to a default I/O device to be to the wireless I/O device, if the program code for coupling determines that the wireless I/O device is available. A virtual connection module could be used to intercept system messages indicating a wireless device is present and connected, determine whether the wireless device is present and/or connected, and determine which intercepted messages to forward, drop, delay or reformulate.
1. A method comprising:
detecting, by an input/output (I/O) routing module executing on a computer system, that a wireless input/output (I/O) device is present on a wireless channel, where the wireless I/O device is not mechanically or electrically attached to the computer system;
in response to the detecting, simulating by the I/O routing module a physical connection of a hardware I/O device to the computer system, thereby causing an operating system of the computer system to route an I/O stream to the I/O routing module;
routing, by the I/O routing module, the I/O stream to the wireless I/O device;
determining that the wireless channel is inoperable and, in response to determining that the wireless channel is inoperable, deferring a notification to the operating system that the wireless I/O device has been disconnected; and
determining that the wireless channel has returned to operability and, in response to determining that the wireless channel has returned to operability, discarding the notification to the operating system that the wireless I/O has been disconnected.
2. The method of claim 1 , where simulating the physical connection comprises simulating the physical connection in response to receiving information describing the wireless I/O device from the wireless I/O device.
3. The method of claim 1 , further comprising:
receiving a token from the wireless I/O device identifying a session with the wireless I/O device;
determining, using the token, that the session is still available; and
reestablishing the session with the wireless I/O device.
4. The method of claim 1 , further comprising:
detecting whether the wireless I/O device is wirelessly connected or disconnected;
intercepting computer system messages related to the connection or disconnection of the wireless I/O device; and
determining whether to forward, drop, delay or reformulate the intercepted message.
5. The method of claim 1 , where deferring the notification to the operating system comprises:
maintaining variables or settings for reestablishing a session with the wireless I/O device.
6. The method of claim 1 , where determining that the wireless channel has returned to operability comprises determining that the wireless channel has returned to operability within less than a threshold time.
7. A computer system comprising:
one or more processors;
memory coupled to the one or more processors and configured to store instructions, which, when executed by the one or more processors, causes the one or more processors to perform operations comprising:
detecting, by an input/output (I/O) routing module executing on the computer system, that a wireless input/output (I/O) device is present, where the wireless I/O device is not mechanically or electrically attached to the computer system;
in response to the detecting, simulating by the I/O routing module a physical connection of a hardware I/O device to the computer system, thereby causing an operating system of the computer system to route an I/O stream to the I/O routing module;
routing, by the I/O routing module, the I/O stream to the wireless I/O device;
determining that the wireless channel is inoperable and, in response to determining that the wireless channel is inoperable, deferring a notification to the operating system that the wireless I/O device has been disconnected; and
determining that the wireless channel has returned to operability and, in response to determining that the wireless channel has returned to operability, discarding the notification to the operating system that the wireless I/O has been disconnected.
8. The system of claim 7 , where simulating the physical connection comprises simulating the physical connection in response to receiving information describing the wireless I/O device from the wireless I/O device.
9. The system of claim 7 , the operations further comprising:
receiving a token from the wireless I/O device identifying a session with the wireless I/O device;
determining, using the token, that the session is still available; and
reestablishing the session with the wireless I/O device.
10. The system of claim 7 , the operations further comprising:
detecting whether the wireless I/O device is present and wirelessly connected;
intercepting computer system messages related to a connection or disconnection of the wireless I/O device; and
determining whether to forward, drop, delay or reformulate the intercepted message.
11. The system of claim 7 , where deferring the notification to the operating system comprises:
maintaining variables or settings for reestablishing a session with the wireless I/O device.
12. The system of claim 7 , where determining that the wireless channel has returned to operability comprises determining that the wireless channel has returned to operability within less than a threshold time.
13. A non-transitory, computer-readable storage medium storing instructions, which, when executed by one or more processors, causes the one or more processors to perform operations comprising:
detecting, by an input/output (I/O) routing module executing on a computer system, that a wireless input/output (I/O) device is present, where the wireless I/O device is not mechanically or electrically attached to the computer system;
in response to the detecting, simulating by the I/O routing module a physical connection of a hardware I/O device to the computer system, thereby causing an operating system of the computer system to route an I/O stream to the I/O routing module;
routing, by the I/O routing module, the I/O stream to the wireless I/O device;
determining that the wireless channel is inoperable and, in response to determining that the wireless channel is inoperable, deferring a notification to the operating system that the wireless I/O device has been disconnected; and
determining that the wireless channel has returned to operability and, in response to determining that the wireless channel has returned to operability, discarding the notification to the operating system that the wireless I/O has been disconnected.
14. The non-transitory, computer-readable storage medium of claim 13 , where simulating the physical connection comprises simulating the physical connection in response to receiving information describing the wireless I/O device from the wireless I/O device.
15. The non-transitory, computer-readable storage medium of claim 13 , the operations further comprising:
receiving a token from the wireless I/O device identifying a session with the wireless I/O device;
determining, using the token, that the session is still available; and
reestablishing the session with the wireless I/O device.
16. The non-transitory, computer-readable storage medium of claim 13 , the operations further comprising:
detecting whether the wireless I/O device is present and wirelessly connected;
intercepting computer system messages related to a connection or disconnection of the wireless I/O device; and
determining whether to forward, drop, delay or reformulate the intercepted message.
17. The non-transitory, computer-readable storage medium of claim 13 , where deferring the notification to the operating system comprises:
maintaining variables or settings for reestablishing a session with the wireless I/O device.
18. The non-transitory, computer-readable storage medium of claim 13 , where determining that the wireless channel has returned to operability comprises determining that the wireless channel has returned to operability within less than a threshold time.