Updating a transport stack in a content centric network

• US 10,404,537 B2
• Filed: 06/11/2018
• Issued: 09/03/2019
• Est. Priority Date: 05/13/2016
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Fox, Kevin C., Scott, Glenn C.
• Primary Examiner(s): Shin, Kyung H
• Application Number:
  US16/005,091
• Publication Number:
  US 20180295025A1
• Time in Patent Office: 449 Days
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04L 41/0816 the condition being an adaptation, e.g. in response to network events
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/146 Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding
• CPC Class Codes: H04L 67/63 Routing a service request depending on the request content or context
• CPC Class Codes: H04L 69/26 Special purpose or proprietary protocols or architectures network applications for proprietary or special purpose networking environments H04L67/12
• CPC Class Codes: H04L 69/321 Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers

Abstract

One embodiment provides a transport stack updating system that facilitates updating a component of a transport stack of a computer system. During operation, the system sets, by a component of the transport stack, a state of the component as quiesced in response to receiving a pause message. A component in the quiesced state is precluded from processing an interest or a content object. The system determines whether the pause message triggers a rejection passes an acknowledgment message of the pause message up the transport stack. The acknowledgment message indicates that the pause message has been successfully processed by a respective component of the transport stack.

Claims

1. A method comprising:

at a content centric network node including a transport stack having a plurality of components;

sending a pause message down the transport stack while the plurality of components are processing interests and/or content objects, wherein the pause message precludes one or more components of the plurality of components from processing the interests and/or the content objects;

after sending the pause message, sending an update message down the transport stack, wherein the update message provides an update for the transport stack while the one or more components are precluded from processing the interests and/or the content objects; and

after sending the update message, sending a resume message down the transport stack, wherein the resume message causes the one or more components to resume processing the interests and/or the content objects in accordance with the update.

2. The method of claim 1, wherein the update message adds a new component to the transport stack.

3. The method of claim 1, wherein the pause message precludes the one or more components from processing the interests and/or the content objects in a specified namespace.

4. The method of claim 1, further comprising:

at the content centric network node;

sending an acknowledgment message up the transport stack, wherein the acknowledgment message indicates that the pause message has been successfully processed by the one or more components.

5. The method of claim 1, further comprising:

at the content centric network node;

sending a pause failure message up the transport stack, wherein the pause failure message indicates that the pause message has not been successfully processed by the one or more components.

6. The method of claim 5, further comprising:

at the content centric network node;

after a period of time, resending the pause message down the transport stack.

7. The method of claim 1, wherein sending the pause message, update message, and resume message includes sending the pause message, update message, and resume message using an administrator agent.

8. The method of claim 1, wherein sending the pause message includes sending the pause message in response to determining that the transport stack is to be updated.

9. The method of claim 1, wherein the pause message causes the one or more components to enter a quiesced state.

10. The method of claim 1, wherein the pause message includes a lifetime upon expiry of which the one or more components resume processing the interests and/or the content objects.

11. An apparatus comprising:

a memory configured to store instructions for updating a transport stack having a plurality of components; and

a processor in communication with the memory, wherein the processor is configured to;

send a pause message down the transport stack while the plurality of components are processing interests and/or content objects, wherein the pause message precludes one or more components of the plurality of components from processing the interests and/or the content objects;

after sending the pause message, send an update message down the transport stack, wherein the update message provides an update for the transport stack while the one or more components are precluded from processing the interests and/or the content objects; and

after sending the update message, send a resume message down the transport stack, wherein the resume message causes the one or more components to resume processing the interests and/or the content objects in accordance with the update.

12. The apparatus of claim 11, wherein the update message adds a new component to the transport stack.

13. The apparatus of claim 11, wherein the pause message precludes the one or more components from processing the interests and/or the content objects in a specified namespace.

14. The apparatus of claim 11, wherein the processor is further configured to:

send an acknowledgment message up the transport stack, wherein the acknowledgment message indicates that the pause message has been successfully processed by the one or more components.

15. The apparatus of claim 11, wherein the processor is further configured to:

send a pause failure message up the transport stack, wherein the pause failure message indicates that the pause message has not been successfully processed by the one or more components.

16. One or more non-transitory computer-readable storage media storing instructions that, when executed by a processor of a content centric network node including a transport stack having a plurality of components, cause the processor to:

send a pause message down the transport stack while the plurality of components are processing interests and/or content objects, wherein the pause message precludes one or more components of the plurality of components from processing the interests and/or the content objects;

after sending the pause message, send an update message down the transport stack, wherein the update message provides an update for the transport stack while the one or more components are precluded from processing the interests and/or the content objects; and

after sending the update message, send a resume message down the transport stack, wherein the resume message causes the one or more components to resume processing the interests and/or the content objects in accordance with the update.

17. The one or more non-transitory computer-readable storage media of claim 16, wherein the update message adds a new component to the transport stack.

18. The one or more non-transitory computer-readable storage media of claim 16, wherein the pause message precludes the one or more components from processing the interests and/or the content objects in a specified namespace.

19. The one or more non-transitory computer-readable storage media of claim 16, wherein the instructions further cause the processor to:

send an acknowledgment message up the transport stack, wherein the acknowledgment message indicates that the pause message has been successfully processed by the one or more components.

20. The one or more non-transitory computer-readable storage media of claim 16, wherein the instructions further cause the processor to:

send a pause failure message up the transport stack, wherein the pause failure message indicates that the pause message has not been successfully processed by the one or more components.