Policy-Based Payload Delivery for Transport Protocols

• US 20180063216A1
• Filed: 10/23/2017
• Published: 03/01/2018
• Est. Priority Date: 04/23/2014
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Subramanian, Vijaynarayanan, Sudhaakar, Raghuram S., Maluf, David A.
• Granted Patent: US 10,362,083 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 16/24565 Triggers; Constraints
• CPC Class Codes: H04L 41/0246 Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols
• CPC Class Codes: H04L 65/765 intermediate
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

Information describing a rule to be applied to a traffic stream is received at an edge network device. The traffic stream is received at the edge network device. A schema is applied to the traffic stream at the edge network device. It is determined that a rule triggering condition has been met. The rule is applied to the traffic stream, at the edge network device, in response to the rule triggering condition having been met. At least one of determining that the rule triggering event has taken place or applying the rule is performed based on the applied schema.

Claims

1. A method comprising:

receiving, at an edge network device, information describing a query to be executed against a specific file type received over a traffic stream at the edge network device;

receiving the traffic stream at the edge network device;

parsing data in the received traffic stream at the edge network device;

determining, in response to the parsing, that the data in the received data stream comprises data of the specific file type;

decoding, at the edge network device, the data in the received traffic stream according to the specific file type; and

executing, at the edge network device, the query against the decoded data.

2. The method of claim 1, wherein the specific file type comprises a comma separate value file,

wherein decoding the data in the received traffic stream comprises decoding the data as comma separate value data comprising a plurality of columns and a plurality of rows;

and

wherein executing the query comprises searching for a value stored at an intersection of one of the plurality of rows and one of the plurality of columns.

3. The method of claim 1, wherein the specific file type comprises a text file,

wherein decoding the data in the received traffic stream comprises decoding the data as text data comprising a character string, and

wherein executing the query comprises searching for the character string in the text data.

4. The method of claim 1, wherein the specific file type comprises an Extensible Markup Language (XML) file,

wherein decoding the data in the received traffic stream comprises decoding the data as one or more of structured data, unstructured data or XML tags, and

wherein executing the query comprises searching for a value in the one or more of the structured data, unstructured data or XML tags.

5. The method of claim 1, wherein the specific file type comprises a JavaScript Object Notation (JSON) file,

wherein decoding the data in the received traffic stream comprises decoding the data as JSON object formatted data, and

wherein executing the query comprises searching for a value in the JSON object formatted data.

6. The method of claim 1, wherein the specific file type comprises a Hypertext Mark-up Language (HTML) file,

wherein decoding the data in the received traffic stream comprises decoding the data as one or more of HTML tags or HTML content, and

wherein executing the query comprises searching for a value in the HTML tags or HTML content.

7. The method of claim 1, further comprising:

receiving a result of the query; and

forwarding the data in the received traffic stream to a backend server in response to receiving the result.

8. An apparatus comprising:

a network interface configured to enable communication over a network on behalf of an edge network device; and

a processor coupled to the network interface, and configured to;

receive, via the network interface, information describing a query to be executed against a specific file type received over a traffic stream;

receive, via the network interface, the traffic stream;

parse data in the received traffic stream;

determine, in response to the parsing, that the data in the received data stream comprises data of the specific file type;

decode the data in the received traffic stream according to the specific file type; and

execute the query against the decoded data.

9. The apparatus of claim 8, wherein the specific file type comprises a comma separate value file,

wherein the processor is configured to decode the data as comma separate value data comprising a plurality of columns and a plurality of rows;

and

wherein the processor is configured to execute the query by searching for a value stored at an intersection of one of the plurality of rows and one of the plurality of columns.

10. The apparatus of claim 8, wherein the specific file type comprises a text file,

wherein the processor is configured to decode the data as text data comprising a character string, and

wherein the processor is configured to execute the query by searching for the character string in the text data.

11. The apparatus of claim 8, wherein the specific file type comprises an Extensible Markup Language (XML) file,

wherein the processor is configured to decode the data as one or more of structured data, unstructured data or XML tags, and

wherein the processor is configured to execute the query by searching for a value in the one or more of the structured data, unstructured data or XML tags.

12. The apparatus of claim 8, wherein the specific file type comprises a JavaScript Object Notation (JSON) file,

wherein the processor is configured to decode the data as JSON object formatted data, and

wherein the processor is configured to execute the query by searching for a value in the JSON object formatted data.

13. The apparatus of claim 8, wherein the specific file type comprises a Hypertext Mark-up Language (HTML) file,

wherein the processor is configured to decode the data as one or more of HTML tags or HTML content, and

wherein the processor is configured to execute the query by searching for a value in the HTML tags or HTML content.

14. The apparatus of claim 8, wherein the processor is further configured to:

receive a result of the query; and

forward, via the network interface, the data in the received traffic stream to a backend server in response to receiving the result.

15. One or more computer readable storage media encoded with software comprising computer executable instructions and when the software is executed operable to:

receive, at an edge network device, information describing a query to be executed against a specific file type received over a traffic stream at the edge network device;

receive the traffic stream at the edge network device;

parse data in the received traffic stream at the edge network device;

determine, in response to the parsing, that the data in the received data stream comprises data of the specific file type;

decode, at the edge network device, the data in the received traffic stream according to the specific file type; and

execute, at the edge network device, the query against the decoded data.

16. The computer readable storage media of claim 15, wherein the specific file type comprises a comma separate value file,

wherein the instructions operable to decode the data in the received traffic stream comprise instructions operable to decode the data as comma separate value data comprising a plurality of columns and a plurality of rows;

and

wherein the instructions operable to execute the query comprise instructions operable to search for a value stored at an intersection of one of the plurality of rows and one of the plurality of columns.

17. The computer readable storage media of claim 15, wherein the specific file type comprises a text file,

wherein the instructions operable to decode the data in the received traffic stream comprise instructions operable to decode the data as text data comprising a character string, and

wherein the instructions operable to execute the query comprise instructions operable to search for the character string in the text data.

18. The computer readable storage media of claim 15, wherein the specific file type comprises an Extensible Markup Language (XML) file,

wherein the instructions operable to decode the data in the received traffic stream comprise instructions operable to decode the data as one or more of structured data, unstructured data or XML tags, and

wherein the instructions operable to execute the query comprise instructions operable to search for a value in the one or more of the structured data, unstructured data or XML tags.

19. The computer readable storage media of claim 15, wherein the specific file type comprises a JavaScript Object Notation (JSON) file,

wherein the instructions operable to decode the data in the received traffic stream comprise instructions operable to decode the data as JSON object formatted data, and

wherein the instructions operable to execute the query comprise instructions operable to search for a value in the JSON object formatted data.

20. The computer readable storage media of claim 15, wherein the specific file type comprises a Hypertext Mark-up Language (HTML) file,

wherein the instructions operable to decode the data in the received traffic stream comprise instructions operable to decode the data as one or more of HTML tags or HTML content, and

wherein the instructions operable to execute the query comprise instructions operable to search for a value in the HTML tags or HTML content.