BANDWIDTH OPTIMIZATION FOR REMOTE DESKTOP PROTOCOL

• US 20130136125A1
• Filed: 11/29/2011
• Published: 05/30/2013
• Est. Priority Date: 11/29/2011
• Status: Active Grant

• Current Assignee: Dell Marketing Corporation (Dell Technologies Inc.)
• Original Assignee: Wyse Technology Incorporated (Dell Technologies Inc.)
• Inventors: Jain, Goutham Vastimal, Basha P R, Khader, Desai, Paramtap
• Granted Patent: US 8,681,813 B2
• Time in Patent Office: Days
• US Class Current: 370/392
• CPC Class Codes: G06F 15/167 using a common memory, e.g. mailbox
• CPC Class Codes: H04L 47/38 by adapting coding or compression rate
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/025 for remote control or remote monitoring of applications
• CPC Class Codes: H04L 67/08 specially adapted for terminal emulation, e.g. Telnet
• CPC Class Codes: H04L 67/60 Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources admission control or resource allocation H04L47/70
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion

Abstract

The processing of a first data stream to generate a second stream conforming to a remote desktop protocol (RDP) is described. Operations may include facilitating storage of first data from the first stream at a first index indicated in the first stream, facilitating retrieval of second data from a second index included in the first stream, and facilitating generation of the second stream conforming to the RDP and including the first and second data. Additionally, the processing of a third data stream conforming to the RDP to stream a fourth stream is described. Operations include facilitating processing of the third stream to identify a package data unit (PDU), facilitating storing of a hash value corresponding to the PDU, and facilitating generating an altered PDU for inclusion in the fourth stream and including an index identifying a location in memory storing the hash value.

Claims

1. A method for processing a first data stream received from a remote server to generate a second data stream conforming to a remote desktop protocol (RDP), the method comprising:

facilitating processing of the first data stream received from the remote server to retrieve package data units (PDUs) associated with packet data,

wherein each PDU associated with packet data has a header including an index value related to the packet data and indicative of a storage location;

in response to receiving a first PDU including first packet data, the method comprising;

facilitating decompression of the first packet data using a decompression algorithm; and

facilitating storage of the decompressed first packet data in a location of a memory cache corresponding to the index value included in the header of the first PDU;

in response to receiving a second PDU, facilitating retrieval of second packet data from a location of the memory cache corresponding to the index value included in the header of the second PDU;

facilitating generation of the second data stream conforming to the RDP and including the decompressed first packet data and the retrieved second packet data; and

facilitating streaming of the generated second data stream conforming to the RDP to a local client.

2. The method of claim 1, wherein prior to facilitating processing of the first data stream, the method comprises:

facilitating interception of a connection request transmitted from the local client to establish a streaming connection conforming to the RDP with the remote server, the connection request identifying the remote server; and

in response to facilitating interception of the connection request, facilitating establishment of a streaming connection with the remote server identified in the connection request to receive the first data stream from the remote server.

3. The method of claim 1, wherein the first data stream does not conform to the RDP.

4. The method of claim 1, wherein prior to facilitating processing of the first data stream, the method comprises:

facilitating decryption of the first data stream received from the remote server; and

facilitating bulk decompression of the decrypted first data stream, following the facilitating decryption of the first data stream,

wherein the facilitating generation of the second data stream comprises facilitating generation of the second data stream including the decompressed first packet data, the retrieved second packet data, and at least one PDU, from the bulk decompressed decrypted first data stream, that is not associated with packet data.

5. The method of claim 1, wherein the first packet data is first image data, and wherein the facilitating decompression of the first packet data comprises facilitating decompression of the first image data using a JPEG image decompression algorithm having one of a visually lossy, visually lossless, and lossless decompression mode.

6. A method for processing a first data stream conforming to a remote desktop protocol (RDP) to stream a second data stream to a remote client device, the method comprising:

facilitating processing of the first data stream conforming to the RDP to identify package data units (PDUs) including packet data and, for each PDU including packet data, to calculate a hash value from the packet data;

facilitating a search, in a memory cache storing hash values, for a stored hash value matching the hash value calculated from the packet data, for each PDU including packet data;

facilitating selectively storing in a location of the memory cache the hash value calculated from the packet data of a PDU, if the search fails to find a stored hash value matching the calculated hash value;

facilitating selectively compressing the packet data of the PDU, if the search fails to find a stored hash value matching the calculated hash value;

facilitating generating an altered PDU for each PDU of the first data stream including packet data,

wherein the altered PDU includes a header having an index value indicative of the location in the memory cache storing the hash value calculated from the packet data or of a location in the memory cache storing the hash value matching the hash value calculated from the packet data, and

wherein the altered PDU selectively includes the compressed packet data, if the search fails to find a stored hash value matching the calculated hash value; and

facilitating streaming to the remote client device the second data stream including the generated altered PDU for each PDU of the first data stream including packet data.

7. The method of claim 6, wherein prior to facilitating processing of the first data stream, the method comprises:

facilitating establishing a first streaming connection to the remote client device, in response to receiving a connection request from the remote client device,

wherein the connection request identifies the RDP server, and

wherein the identified RDP server is a local RDP server; and

facilitating establishing a second streaming connection to the RDP server identified in the connection request, in response to receiving the connection request from the remote client.

8. The method of claim 6, wherein the second data stream does not conform to the RDP.

9. The method of claim 6, wherein prior to facilitating streaming of the second data stream, the method comprises:

facilitating generating a data stream including the generated altered PDU for each PDU of the first data stream including packet data, and at least one PDU of the first data stream that does not include packet data;

facilitating bulk compression of the generated data stream; and

facilitating encryption of the bulk compressed generated data stream as the second data stream.

10. The method of claim 6, wherein the facilitating selectively compressing the packet data comprises facilitating selectively compressing the packet data using a JPEG image compression algorithm having one of a visually lossy, visually lossless, and lossless compression mode.

11. A machine-readable storage medium encoded with instructions executable by one or more processors to perform one or more operations for processing a first data stream received from a remote server to generate a second data stream conforming to a remote desktop protocol (RDP), the one or more operations comprising:

facilitating processing of the first data stream received from the remote server to retrieve package data units (PDUs) associated with packet data,

wherein each PDU associated with packet data has a header including an index value related to the packet data and indicative of a storage location;

in response to receiving a first PDU including first packet data, the one or more operations comprising;

facilitating decompression of the first packet data using a decompression algorithm; and

facilitating storage of the decompressed first packet data in a location of a memory cache corresponding to the index value included in the header of the first PDU;

in response to receiving a second PDU, facilitating retrieval of second packet data from a location of the memory cache corresponding to the index value included in the header of the second PDU;

facilitating generation of the second data stream conforming to the RDP and including the decompressed first packet data and the retrieved second packet data; and

facilitating streaming of the generated second data stream conforming to the RDP to a local client.

12. The machine-readable storage medium of claim 11, wherein prior to facilitating processing of the first data stream, the one or more operations further comprise:

facilitating interception of a connection request transmitted from the local client to establish a streaming connection conforming to the RDP with the remote server, the connection request identifying the remote server; and

in response to facilitating interception of the connection request, facilitating establishment of a streaming connection with the remote server identified in the connection request to receive the first data stream from the remote server.

13. The machine-readable storage medium of claim 11, wherein the first data stream does not conform to the RDP.

14. The machine-readable storage medium of claim 11, wherein prior to facilitating processing of the first data stream, the one or more operations further comprise:

facilitating decryption of the first data stream received from the remote server; and

facilitating bulk decompression of the decrypted first data stream, following the facilitating decryption of the first data stream,

wherein the facilitating generation of the second data stream comprises facilitating generation of the second data stream including the decompressed first packet data, the retrieved second packet data, and at least one PDU, from the bulk decompressed decrypted first data stream, that is not associated with packet data.

15. The machine-readable storage medium of claim 11, wherein the first packet data is first image data, and wherein the facilitating decompression of the first packet data comprises facilitating decompression of the first image data using a JPEG image decompression algorithm having one of a visually lossy, visually lossless, and lossless decompression mode.

16. A machine-readable storage medium encoded with instructions executable by one or more processors to perform one or more operations for processing a first data stream conforming to a remote desktop protocol (RDP) to stream a second data stream to a remote client device, the one or more operations comprising:

facilitating processing of the first data stream conforming to the RDP to identify package data units (PDUs) including packet data and, for each PDU including packet data, to calculate a hash value from the packet data;

facilitating a search, in a memory cache storing hash values, for a stored hash value matching the hash value calculated from the packet data, for each PDU including packet data;

facilitating selectively storing in a location of the memory cache the hash value calculated from the packet data of a PDU, if the search fails to find a stored hash value matching the calculated hash value;

facilitating selectively compressing the packet data of the PDU, if the search fails to find a stored hash value matching the calculated hash value;

facilitating generating an altered PDU for each PDU of the first data stream including packet data,

wherein the altered PDU includes a header having an index value indicative of the location in the memory cache storing the hash value calculated from the packet data or of a location in the memory cache storing the hash value matching the hash value calculated from the packet data, and

wherein the altered PDU selectively includes the compressed packet data, if the search fails to find a stored hash value matching the calculated hash value; and

facilitating streaming to the remote client device the second data stream including the generated altered PDU for each PDU of the first data stream including packet data.

17. The machine-readable storage medium of claim 16, wherein prior to facilitating processing of the first data stream, the one or more operations further comprise:

facilitating establishing a first streaming connection to the remote client device, in response to receiving a connection request from the remote client device,

wherein the connection request identifies the RDP server, and

wherein the identified RDP server is a local RDP server; and

facilitating establishing a second streaming connection to the RDP server identified in the connection request, in response to receiving the connection request from the remote client.

18. The machine-readable storage medium of claim 16, wherein the second data stream does not conform to the RDP.

19. The machine-readable storage medium of claim 16, wherein prior to facilitating streaming of the second data stream, the one or more operations further comprise:

facilitating generating a data stream including the generated altered PDU for each PDU of the first data stream including packet data, and at least one PDU of the first data stream that does not include packet data;

facilitating bulk compression of the generated data stream; and

facilitating encryption of the bulk compressed generated data stream as the second data stream.

20. The machine-readable storage medium of claim 16, wherein the facilitating selectively compressing the packet data comprises facilitating selectively compressing the packet data using a JPEG image compression algorithm having one of a visually lossy, visually lossless, and lossless compression mode.

21. A hardware apparatus for processing a first data stream received from a remote server to generate a second data stream conforming to a remote desktop protocol (RDP), the hardware apparatus comprising:

one or more modules configured to perform one or more operations comprising;

facilitating processing of the first data stream received from the remote server to retrieve package data units (PDUs) associated with packet data,

wherein each PDU associated with packet data has a header including an index value related to the packet data and indicative of a storage location;

in response to receiving a first PDU including first packet data, the one or more operations comprising;

facilitating decompression of the first packet data using a decompression algorithm; and

facilitating storage of the decompressed first packet data in a location of a memory cache corresponding to the index value included in the header of the first PDU;

in response to receiving a second PDU, facilitating retrieval of second packet data from a location of the memory cache corresponding to the index value included in the header of the second PDU;

facilitating generation of the second data stream conforming to the RDP and including the decompressed first packet data and the retrieved second packet data; and

facilitating streaming of the generated second data stream conforming to the RDP to a local client.

22. The hardware apparatus of claim 21, wherein the one or more operations comprise, prior to facilitating processing of the first data stream:

facilitating interception of a connection request transmitted from the local client to establish a streaming connection conforming to the RDP with the remote server, the connection request identifying the remote server; and

in response to facilitating interception of the connection request, facilitating establishment of a streaming connection with the remote server identified in the connection request to receive the first data stream from the remote server.

23. The hardware apparatus of claim 21, wherein the first data stream does not conform to the RDP.

24. The hardware apparatus of claim 21, wherein prior to facilitating processing of the first data stream, the one or more operations further comprise:

facilitating decryption of the first data stream received from the remote server; and

facilitating bulk decompression of the decrypted first data stream, following the facilitating decryption of the first data stream,

wherein the facilitating generation of the second data stream comprises facilitating generation of the second data stream including the decompressed first packet data, the retrieved second packet data, and at least one PDU, from the bulk decompressed decrypted first data stream, that is not associated with packet data.

25. The hardware apparatus of claim 21, wherein the first packet data is first image data, and wherein the facilitating decompression of the first packet data comprises facilitating decompression of the first image data using a JPEG image decompression algorithm having one of a visually lossy, visually lossless, and lossless decompression mode.

26. A hardware apparatus for processing a first data stream conforming to a remote desktop protocol (RDP) to stream a second data stream to a remote client device, the hardware apparatus comprising:

one or more modules configured to perform one or more operations comprising;

facilitating processing of the first data stream conforming to the RDP to identify package data units (PDUs) including packet data and, for each PDU including packet data, to calculate a hash value from the packet data;

facilitating a search, in a memory cache storing hash values, for a stored hash value matching the hash value calculated from the packet data, for each PDU including packet data;

facilitating selectively storing in a location of the memory cache the hash value calculated from the packet data of a PDU, if the search fails to find a stored hash value matching the calculated hash value;

facilitating selectively compressing the packet data of the PDU, if the search fails to find a stored hash value matching the calculated hash value;

facilitating generating an altered PDU for each PDU of the first data stream including packet data,

wherein the altered PDU includes a header having an index value indicative of the location in the memory cache storing the hash value calculated from the packet data or of a location in the memory cache storing the hash value matching the hash value calculated from the packet data, and

wherein the altered PDU selectively includes the compressed packet data, if the search fails to find a stored hash value matching the calculated hash value; and

facilitating streaming to the remote client device the second data stream including the generated altered PDU for each PDU of the first data stream including packet data.

27. The hardware apparatus of claim 26, wherein prior to facilitating processing of the first data stream, the one or more operations comprise:

facilitating establishing a first streaming connection to the remote client device, in response to receiving a connection request from the remote client device,

wherein the connection request identifies the RDP server, and

wherein the identified RDP server is a local RDP server; and

facilitating establishing a second streaming connection to the RDP server identified in the connection request, in response to receiving the connection request from the remote client.

28. The hardware apparatus of claim 26, wherein the second data stream does not conform to the RDP.

29. The hardware apparatus of claim 26, wherein prior to facilitating streaming of the second data stream, the one or more operations comprise:

facilitating generating a data stream including the generated altered PDU for each PDU of the first data stream including packet data, and at least one PDU of the first data stream that does not include packet data;

facilitating bulk compression of the generated data stream; and

facilitating encryption of the bulk compressed generated data stream as the second data stream.

30. The hardware apparatus of claim 26, wherein the facilitating selectively compressing the packet data comprises facilitating selectively compressing the packet data using a JPEG image compression algorithm having one of a visually lossy, visually lossless, and lossless compression mode.

31. An apparatus for processing a first data stream received from a remote server to generate a second data stream conforming to a remote desktop protocol (RDP), the apparatus comprising:

means for facilitating processing of the first data stream received from the remote server to retrieve package data units (PDUs) associated with packet data,

wherein each PDU associated with packet data has a header including an index value related to the packet data and indicative of a storage location;

means for, in response to receiving a first PDU including first packet data, performing operations comprising;

facilitating decompression of the first packet data using a decompression algorithm; and

facilitating storage of the decompressed first packet data in a location of a memory cache corresponding to the index value included in the header of the first PDU;

means for, in response to receiving a second PDU, facilitating retrieval of second packet data from a location of the memory cache corresponding to the index value included in the header of the second PDU;

means for facilitating generation of the second data stream conforming to the RDP and including the decompressed first packet data and the retrieved second packet data; and

means for facilitating streaming of the generated second data stream conforming to the RDP to a local client.

32. The apparatus of claim 31, further comprising:

means for, prior to facilitating processing of the first data stream, facilitating interception of a connection request transmitted from the local client to establish a streaming connection conforming to the RDP with the remote server, the connection request identifying the remote server; and

means for, in response to facilitating interception of the connection request, facilitating establishment of a streaming connection with the remote server identified in the connection request to receive the first data stream from the remote server.

33. The apparatus of claim 31, wherein the first data stream does not conform to the RDP.

34. The apparatus of claim 31, further comprising:

means for, prior to facilitating processing of the first data stream, facilitating decryption of the first data stream received from the remote server; and

means for facilitating bulk decompression of the decrypted first data stream, following the facilitating decryption of the first data stream,

wherein the means for facilitating generation of the second data stream comprise means for facilitating generation of the second data stream including the decompressed first packet data, the retrieved second packet data, and at least one PDU, from the bulk decompressed decrypted first data stream, that is not associated with packet data.

35. The apparatus of claim 31, wherein the first packet data is first image data, and wherein the means for facilitating decompression of the first packet data comprise means for facilitating decompression of the first image data using a JPEG image decompression algorithm having one of a visually lossy, visually lossless, and lossless decompression mode.

36. An apparatus for processing a first data stream conforming to a remote desktop protocol (RDP) to stream a second data stream to a remote client device, the apparatus comprising:

means for facilitating processing of the first data stream conforming to the RDP to identify package data units (PDUs) including packet data and, for each PDU including packet data, to calculate a hash value from the packet data;

means for facilitating a search, in a memory cache storing hash values, for a stored hash value matching the hash value calculated from the packet data, for each PDU including packet data;

means for facilitating selectively storing in a location of the memory cache the hash value calculated from the packet data of a PDU, if the search fails to find a stored hash value matching the calculated hash value;

means for facilitating selectively compressing the packet data of the PDU, if the search fails to find a stored hash value matching the calculated hash value;

means for facilitating generating an altered PDU for each PDU of the first data stream including packet data,

wherein the altered PDU includes a header having an index value indicative of the location in the memory cache storing the hash value calculated from the packet data or of a location in the memory cache storing the hash value matching the hash value calculated from the packet data, and

wherein the altered PDU selectively includes the compressed packet data, if the search fails to find a stored hash value matching the calculated hash value; and

means for facilitating streaming to the remote client device the second data stream including the generated altered PDU for each PDU of the first data stream including packet data.

37. The apparatus of claim 36, further comprising:

means for, prior to facilitating processing of the first data stream, facilitating establishing a first streaming connection to the remote client device, in response to receiving a connection request from the remote client device,

wherein the connection request identifies the RDP server, and

wherein the identified RDP server is a local RDP server; and

means for facilitating establishing a second streaming connection to the RDP server identified in the connection request, in response to receiving the connection request from the remote client.

38. The apparatus of claim 36, wherein the second data stream does not conform to the RDP.

39. The apparatus of claim 36, further comprising:

means for, prior to facilitating streaming of the second data stream, facilitating generating a data stream including the generated altered PDU for each PDU of the first data stream including packet data, and at least one PDU of the first data stream that does not include packet data;

means for facilitating bulk compression of the generated data stream; and

means for facilitating encryption of the bulk compressed generated data stream as the second data stream.

40. The apparatus of claim 36, wherein the means for facilitating selectively compressing the packet data comprise means for facilitating selectively compressing the packet data using a JPEG image compression algorithm having one of a visually lossy, visually lossless, and lossless compression mode.