Systems and methods for replication of test results in a network environment

• US 9,218,266 B2
• Filed: 07/19/2013
• Issued: 12/22/2015
• Est. Priority Date: 07/23/2012
• Status: Active Grant

• Current Assignee: Infosys Limited
• Original Assignee: Infosys Limited
• Inventors: Dhanapal, Karthikeyan Balaji, Siddaramappa, Harsha, Paul, Sanjoy
• Primary Examiner(s): Rampuria, Satish
• Application Number:
  US13/946,776
• Publication Number:
  US 20140026123A1
• Time in Patent Office: 886 Days
• Field of Search: 717124-135
• US Class Current: 1/1
• CPC Class Codes: G06F 11/3664 Environments for testing or debugging software
• CPC Class Codes: H04L 41/0686 Additional information in the notification, e.g. enhancement of specific meta-data
• CPC Class Codes: H04L 41/069 using logs of notifications; Post-processing of notifications
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04L 43/55 Testing of service level quality, e.g. simulating service usage

Abstract

Systems and methods for replication of test results in a network environment are disclosed. Methods described may include recording network traffic in a first instance of a test case by a network emulator node emplaced in the network environment, recording a time at which a connection open at the network emulator node completes a communication task, and deriving an order of task completion for each extant open connection thereby, and detecting the occurrence of one or more events, such as a packet drop, a packet retransmission, or a packet delay, among other events. Replication, as described, additionally involves recording the nature of the event and identification information associated with the packet to which the event is detected to have occurred; and associating the one or more events with each of the packets recorded, on the basis of the identification information and event recording.

Claims

1. A method for replication of test results in a network environment, the method comprising:

recording, by a network management computing device, a test case comprising a plurality of communication tasks over a plurality of network connections and involving network traffic comprising one or more data packets, one or more state changes associated with the one or more data packets, and a time of communication task completion for each of the plurality of communication tasks;

determining, by the network management computing device, an order of communication task completion based on the recorded time of communication task completion for each of the plurality of communication tasks;

detecting, by the network management computing device, one or more network events based on the state changes associated with the one or more data packets, the state changes comprising a packet drop, a packet retransmission, a packet delay, a packet duplication, packet reordering, a change in the connection'"'"'s IP address, or a disruption in a radio link;

determining, by the network management computing device, a network event type for each of the detected one or more network events based on identification information associated with the one or more data packets for which the state changes are detected, wherein the identification information comprises input identification data based on the order of communication task completion; and

associating, by the network management computing device, the detected one or more network events with each one of the one or more data packets based on the identification information.

2. The method as set forth in claim 1, wherein the identification information further comprises a connection protocol, a packet count number, a sequence number of the packet, a size of the packet or a port number to which the packet is addressed, wherein the packet count number is relative to the temporal position of the packet counting from the start of the network traffic, and the sequence number comprises a measure of bytes passed before the arrival of the packet.

3. The method as set forth in claim 1, wherein the completion of each one of the plurality of communication tasks is triggered based on satisfying at least one of a connection closure condition or a connection idling condition wherein the connection is in an idle state for longer than a predefined threshold time.

4. The method as set forth in claim 1, further comprising:

replicating, by the network management computing device, the network traffic in a second test case, wherein the replicating further comprises applying the one or more events to the one or more data packets associated with each of the detected one or more networks events.

5. The method as set forth in claim 4, further comprising:

detecting, by the network management computing device, a deviation in the network traffic in the second test case from the recorded network traffic.

6. The method as set forth in claim 4, further comprising:

mapping, by the network management computing device, one or more data packets in the second test case to one or more data packets in the recorded network traffic; and

applying, by the network management computing device, the one or more network events to the mapped one or more data packets in the second test case.

7. The method as set forth in claim 4, further comprising:

selecting, by the network management computing device, at least one of the one or more data packets in the second test case for the application of one or more network events by establishing a relationship between the one or more data packets in the second test case and at least one corresponding data packet of the one or more data packets in the recorded network traffic.

8. A network management computing device comprising:

a processor;

a memory coupled to the processor which is configured to be capable of executing programmed instructions comprising and stored in the memory to;

record a test case comprising a plurality of communications tasks over a plurality of network connections and involving network traffic comprising one or more data packets, one or more state changes associated with the one or more data packets, and a time of communication task completion for each of the plurality of communication tasks;

determine an order of communication task completion based on the recorded time of communication task completion for each of the plurality of communication tasks;

detect one or more network events based on the state changes associated with the one or more data packets, the state changes comprising a packet drop, a packet retransmission, a packet delay, a packet duplication, packet reordering, a change in the connection'"'"'s IP address, or a disruption in a radio link;

determine a network event type for each of the detected one or more network events, based on identification information associated with the one or more data packets for which the state changes are detected, wherein the identification information comprises input identification data based on the order of communication task completion; and

associate the detected one or more network events with each one of the one or more data packets based on the identification information.

9. The device as set forth in claim 8, wherein the identification information further comprises a connection protocol, a packet count number, a sequence number of the packet, a size of the packet or a port number to which the packet is addressed, wherein the packet count number is relative to the temporal position of the packet counting from the start of the network traffic, and the sequence number comprises a measure of bytes passed before the arrival of the packet.

10. The device as set forth in claim 8, wherein the completion of each one of the plurality of communication tasks is triggered based on satisfying at least one of a connection closure condition or a connection idling condition wherein the connection is in an idle state for longer than a predefined threshold time.

11. The device as set forth in claim 8, wherein the processor is further configured to be capable of executing programmed instructions comprising and stored in the memory to:

replicate the network traffic in a second test case, wherein the replicating further comprises applying the detected one or more events to one or more data packets associated with each of the one or more events recorded.

12. The device as set forth in claim 11, wherein the processor is further configured to be capable of executing programmed instructions comprising and stored in the memory to:

detect a deviation in the network traffic in the second test case from the recorded network traffic.

13. The device as set forth in claim 11, wherein the processor is further configured to be capable of executing programmed instructions comprising and stored in the memory to:

map one or more data packets in the second test case to one or more data packets in the recorded network traffic; and

apply the one or more network events to the mapped one or more data packets in the second test case.

14. The device as set forth in claim 11, wherein one or more packets are the processor is further configured to be capable of executing programmed instructions comprising and stored in the memory to:

select at least one of the one or more data packets in the second test case for the application of one or more network events by establishing a relationship between the one or more data packets in the second test case and at least one corresponding data packet of the one or more data packets in the recorded network traffic.

15. A non-transitory computer readable medium having stored thereon instructions for replication of test results in a network environment comprising machine executable code which when executed by at least one processor, causes the processor to perform steps comprising:

recording a test case comprising a plurality of communication tasks over a plurality of network connections and involving network traffic comprising one or more data packets, one or more state changes associated with the one or more data packets, and a time of communication task completion for each of the plurality of communication tasks;

determining an order of communication task completion based on the recorded time of communication task completion for each of the plurality of communication tasks;

detecting one or more network events based on the state changes associated with the one or more data packets, the state changes comprising a packet drop, a packet retransmission, a packet delay, a packet duplication, packet reordering, a change in the connection'"'"'s IP address, or a disruption in a radio link;

determining a network event type for each of the detected one or more network events based on identification information associated with the one or more data packets for which the state changes are detected, wherein the identification information comprises input identification data based on the order of communication task completion; and

associating the detected one or more network events with each one of the one or more data packets based on the identification information.

16. The medium as set forth in claim 15, wherein the identification information further comprises a connection protocol, a packet count number, a sequence number of the packet, a size of the packet or a port number to which the packet is addressed, wherein the packet count number is relative to the temporal position of the packet counting from the start of the network traffic, and the sequence number comprises a measure of bytes passed before the arrival of the packet.

17. The medium as set forth in claim 15, wherein the completion of each one of the plurality of communication tasks is triggered based on satisfying at least one of a connection closure condition or a connection idling condition wherein the connection is in an idle state for longer than a predefined threshold time.

18. The medium as set forth in claim 15, further having stored thereon instructions that when executed by the processor cause the processor to perform steps further comprising:

replicating the network traffic in a second test case, wherein the replicating further comprises applying the detected one or more events to the one or more data packets associated with each of the one or more events.

19. The medium as set forth in claim 18, further having stored thereon instructions that when executed by the processor cause the processor to perform steps further comprising:

detecting a deviation in the network traffic in the second test case from the recorded network traffic.

20. The medium as set forth in claim 18, further having stored thereon instructions that when executed by the processor cause the processor to perform steps further comprising:

mapping one or more data packets in the second test case to the one or more data packets in the recorded network traffic; and

applying the one or more network events to the mapped one or more data packets in the second test case.

21. The medium as set forth in claim 18, further having stored thereon instructions that when executed by the processor cause the processor to perform steps further comprising:

selecting at least one of the one or more data packets in the second test case for the application of one or more network events by establishing a relationship between the one or more data packets in the second test case and at least one corresponding data packet of the one or more data packets in the recorded network traffic.