SYSTEMS AND METHODS FOR REAL-TIME ENDPOINT APPLICATION FLOW CONTROL WITH NETWORK STRUCTURE COMPONENT

• US 20100121972A1
• Filed: 10/07/2009
• Published: 05/13/2010
• Est. Priority Date: 10/08/2008
• Status: Active Grant

• Current Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Original Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Inventors: Samuels, Allen R., Collins, Henry
• Granted Patent: US 8,589,579 B2
• Time in Patent Office: Days
• US Class Current: 709/231
• CPC Class Codes: H04J 3/047 Distributors with transistors or integrated circuits
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 41/0896 Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities flow or congestion control using dynamic resource allocation, e.g. in-call renegotiation, H04L47/76
• CPC Class Codes: H04L 41/0897 by horizontal or vertical scaling of resources, or by migrating entities, e.g. virtual resources or entities
• CPC Class Codes: H04L 43/0817 by checking functioning
• CPC Class Codes: H04L 43/0829 Packet loss
• CPC Class Codes: H04L 43/0852 Delays
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/26 using explicit feedback to the source, e.g. choke packets
• CPC Class Codes: H04L 47/28 in relation to timing considerations
• CPC Class Codes: H04L 47/30 in combination with information about buffer occupancy at either end or at transit nodes
• CPC Class Codes: H04L 47/36 by determining packet size, e.g. maximum transfer unit [MTU]
• CPC Class Codes: H04L 47/38 by adapting coding or compression rate
• CPC Class Codes: H04L 49/90 Buffering arrangements
• CPC Class Codes: H04W 28/24 Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]

Abstract

The present solution is directed towards systems and methods to more efficiently control a flow of a data stream traversing at least one intermediary on a network between a client and a server. A sender transmits a first message, comprising a first value of a bandwidth between the first intermediary and a second intermediary determined by the sender, to a first intermediary. The first intermediary establishes a next value of the bandwidth between the first intermediary and the second intermediary. The sender receives from the first intermediary responsive to the first message a second message comprising the established next value of the bandwidth between the first intermediary and the second intermediary. A data transfer manager of the sender, responsive to the second message determines a size of a portion of data queued for transmission to transmit to the first intermediary and a time for transmitting the portion of data queued.

Claims

1. A method to more efficiently control flow of a data stream communicated via a network between a client and a server and traversing at least one intermediary, the method comprising:

transmitting, by a sender to a first intermediary, a first message comprising a first value of a bandwidth between the first intermediary and a second intermediary determined by a first network model of the sender;

establishing, by the first intermediary via a second network model of the first intermediary, a next value of the bandwidth between the first intermediary and the second intermediary;

receiving, by the sender from the first intermediary responsive to the first message, a second message comprising the established next value of the bandwidth between the first intermediary and the second intermediary; and

determining, by a data transfer manager of the sender responsive to an update to the first network model based on the second message, a size of a portion of data queued for transmission to transmit to the first intermediary and a time for transmitting the portion of data queued to the first intermediary.

2. The method of claim 1, wherein the sender comprises one of a server or a client.

3. The method of claim 1, further comprising establishing by the first intermediary, the next value of the bandwidth responsive to a difference between the first value of the bandwidth from the first network model of the sender and a current value of the bandwidth of the second network model of the first intermediary.

4. The method of claim 1, further comprising transmitting, by the sender to the first intermediary, the first message further comprising a compression ratio of data compressed by the first intermediary;

and receiving, by the sender from the first intermediary, the second message further comprising a next compression ratio of data compressed by the first intermediary.

5. The method of claim 1, further comprising transmitting, by the sender to the first intermediary, a third message comprising a first backlog value of an amount of data to be sent as identified by the first network model of the sender;

and receiving, by the sender from the first intermediary, a fourth message comprising a next backlog value of an amount of data to be sent as identified by the second network model.

6. The method of a claim 1, further comprising establishing, by the first intermediary, the next value of the bandwidth between the first intermediary and the second intermediary using a difference in time of arrival of two compressed data packets sent consecutively by the second intermediary.

7. The method of claim 1, further comprising transmitting, by the sender, the portion of data queued for transmission comprising a portion of real-time data.

8. The method of claim 1, further comprising transmitting, by the sender, updates from the first network model to the first intermediary via a message transmitted with the determined portion of data.

9. A method to more efficiently control flow of a data stream communicated via a network between a client and a server and traversing a first and a second intermediary, the method comprising steps of:

transmitting, by a sender to a first intermediary based on a first network model of the sender, a first message comprising a first bandwidth value of the bandwidth between a first intermediary and a second intermediary and a first compression ratio value of data compressed by the first intermediary;

establishing, by the first intermediary via a second network model of the first intermediary, a next compression ratio value of a compression ratio of data compressed by the first intermediary and a next bandwidth value between the first intermediary and the second intermediary;

receiving, by the sender from the first intermediary, a second message comprising one of a next value of the bandwidth between the first intermediary and the second intermediary or a next compression ratio value of the data compressed by the first intermediary; and

determining, by a data transfer manager of the sender responsive to updates to the first network model based on the second message, a size of a portion of data queued for transmission to transmit to the first intermediary and a time for transmitting the portion of data queued to the intermediary.

10. The method of claim 10, wherein the sender comprises one of a server or a client.

11. The method of claim 10, further comprising:

transmitting, by the sender, the first message further comprising a first backlog value of an amount of data to be sent;

establishing, by the first intermediary, a next backlog value of an amount of data to be sent to the first intermediary by the sender; and

receiving, by the sender, the second message further comprising the established next backlog value.

12. The method of a claim 10, further comprising establishing, by the first intermediary, the next value of the bandwidth between the first intermediary and the second intermediary using a difference in time of arrival of two compressed data packets received by the first intermediary and sent consecutively by the second intermediary.

13. The method of claim 10, further comprising the transmitting, by the sender, the portion of data queued for transmission comprising a portion of real-time data.

14. The method of claim 10, further comprising transmitting, by the sender, the portion of data queued for transmission comprising a portion of bulk data.

15. A system to more efficiently control flow of a data stream communicated via a network between a client and a server and traversing at least one intermediary, the system comprising:

a sender transmitting via a network to a first intermediary a first message comprising a first value of a bandwidth between the first intermediary and a second intermediary determined by a first network model of the sender;

a second network model of the first intermediary establishing a next value of the bandwidth between the first intermediary and the second intermediary, the first intermediary sending to the sender a second message comprising the established next value of the bandwidth between the first intermediary and the second intermediary; and

a data transfer manager of the sender, in response to updates to the first network model based on the second message, determining a size of a portion of data queued for transmission to transmit to the first intermediary and a time for transmitting the portion of data queued to the first intermediary.

16. The system of claim 16, further comprising a first compression engine on the first intermediary performing one of compression or decompression of a data stream communicated from a second compression engine of the second intermediary.

17. The system of claim 16, wherein the sender comprises one of a server or a client.

18. The system of claim 16, wherein the second network model of first intermediary established the next value of the bandwidth responsive to a difference between the first value of the bandwidth from the first network model of the sender and a current value of the bandwidth of the second network model of the first intermediary.

19. The system of claim 16, wherein the sender transmits to the first intermediary, via the first message a first compression ratio value for data compressed by the first intermediary;

and receiving, by the sender from the first intermediary, via the second message a next compression ratio value for data compressed by the first intermediary.

20. The system of claim 16, wherein the sender transmits to the first intermediary, a third message comprising a first backlog value of an amount of data to be sent as identified by the first network model of the sender;

and receiving, by the sender from the first intermediary, a fourth message comprising a next backlog value of an amount of data to be sent as identified by the second network model.