公开(公告)号：US10320696B2

公开(公告)日：2019-06-11

申请号：US15443835

申请日：2017-02-27

Applicant: Citrix Systems, Inc.

Inventor： Ashwin Jagadish ,  Saravana Annamalaisami ,  Muthukumar Shunmugiah ,  Mohit Prakash Saxena

IPC: H04L12/805 ,  H04L29/08 ,  H04L12/46

Abstract: Systems and methods of providing fine grained control over MSS values of transport layer connections. A device intermediary to a plurality of clients and a plurality of servers can identify a first MSS value based on a MTU value of a VLAN interface responsive to a request to establish a transport layer connection. Device determines that a MSS value of the VLAN is less than the first MSS value. Device updates, responsive to the determination, the first MSS value to a second MSS value corresponding to the MSS value of the VLAN. Device determines that an MSS value specified by a profile configured for a virtual server of the device is less than the second MSS value. Device updates the second MSS value to the MSS value of the profile responsive to determining that the MSS value specified by the profile is less than the second MSS value.

公开(公告)号：US09894008B2

公开(公告)日：2018-02-13

申请号：US14464585

申请日：2014-08-20

Applicant: Citrix Systems, Inc.

Inventor： Mohit Prakash Saxena ,  Ramanjaneyulu Y Talla ,  Saravana Annamalaisami ,  Ashwin Jagadish ,  Muthukumar Shunmugiah

IPC: H04L12/863 ,  H04L12/935 ,  H04L12/805

CPC classification number: H04L47/6295 ,  H04L47/365 ,  H04L47/628 ,  H04L49/3072

Abstract: This disclosure is directed generally to systems and methods for implementation of Jumbo frames in an existing network stack. In some embodiments, a connection handler of a device receives data having a size greater than an Ethernet frame size. That data includes header data and payload data. The device partitions the data into segments including a first segment and a second segment. The first segment includes the header data and a first portion of the payload data, while the second segment includes a second portion of the payload data. The device stores the first and second segments in first and second network buffers, respectively, of a pool of network buffers. The device forms a packet chain of the first and second network buffers having a size greater than the Ethernet frame size. The device transmits the packet chain via a network connection.

公开(公告)号：US09866529B2

公开(公告)日：2018-01-09

申请号：US14245514

申请日：2014-04-04

Applicant: Citrix Systems, Inc.

Inventor： Krishna Khanal ,  Ashwin Jagadish ,  Saravana Annamalaisami

IPC: G06F15/16 ,  H04L29/06

CPC classification number: H04L63/0272 ,  H04L63/0428 ,  H04L63/08

Abstract: The systems and methods of the present solution are directed to providing Entity Tag persistency by a device intermediary to a client and a plurality of servers. An intermediary device between a client and one or more back-end servers can receive an entity requested by the client from an origin server that provides the requested content. The intermediary device can encode the back-end server information onto an ETag of the entity, cache the entity with the encoded ETag and serve the entity with the encoded ETag to the client. In this way, when the client attempts to validate the entity by sending a request including the encoded ETag to the intermediary device, the intermediary device decodes the encoded ETag to extract the identity of the backend server and sends the request to validate the entity to the identified server that originally sent the entity that included the requested content.

公开(公告)号：US09769288B2

公开(公告)日：2017-09-19

申请号：US13858002

申请日：2013-04-06

Applicant: Citrix Systems, Inc.

Inventor： Varun Taneja ,  Mahesh Mylarappa ,  Saravana Annamalaisami

IPC: G06F15/16 ,  H04L29/06 ,  H04L29/08 ,  H04L12/807

CPC classification number: H04L69/16 ,  H04L47/27 ,  H04L69/326

Abstract: The present disclosure relates to methods and systems for dynamically changing an advertised window for a transport layer connection. A device can receive data from a server destined for an application. The device identifies the size of the application buffer corresponding to the application and advertises the application buffer size as a window size to the server. The device stores the data in the device memory. The device then determines the memory usage by comparing the memory usage to one or more predetermined thresholds. If the device determines that the memory usage is below a first predetermined threshold, the device can implement an aggressive dynamic receive buffering policy in which the device increases the advertised window size by a first increment. If the device determines that the memory usage is above the first threshold and below a second threshold, the device executes a more conservative dynamic receive buffering policy.

公开(公告)号：US09363328B2

公开(公告)日：2016-06-07

申请号：US14469194

申请日：2014-08-26

Applicant: Citrix Systems, Inc.

Inventor： Jagannath Raghu ,  Saravana Annamalaisami ,  Roy Rajan

IPC: G06F15/16 ,  H04L29/08 ,  H04L29/06

CPC classification number: H04L67/2823 ,  H04L67/02 ,  H04L67/2804 ,  H04L67/2819 ,  H04L67/42

Abstract: The present solution is directed towards a policy-based intermediary that dynamically and flexibly injects content in responses between a client and a server based on one or more policies. The present solution addresses the challenges of injecting content in a client-server transaction. The intermediary determines when and what content to inject into a response of a client-server transaction based on a request and/or response policy. The injected content may include timestamp and/or variable tracking of different events in a client-server transaction. For example, when an intermediary appliance is deployed in a system to accelerate system performance and improve user experience, the appliance may inject content based on policy to monitor the acceleration performance of the deployed appliance.

Abstract translation: 本解决方案针对基于策略的中介，其基于一个或多个策略来动态地和灵活地在客户端和服务器之间的响应中注入内容。 本解决方案解决了在客户端 - 服务器事务中注入内容的挑战。 中介确定根据请求和/或响应策略注入到客户机 - 服务器事务的响应中的何时和什么内容。 注入的内容可以包括客户端 - 服务器事务中的不同事件的时间戳和/或可变跟踪。 例如，当中间设备部署在系统中以加速系统性能并改善用户体验时，设备可以基于策略来注入内容以监视所部署的设备的加速性能。

公开(公告)号：US20150222475A1

公开(公告)日：2015-08-06

申请号：US14689933

申请日：2015-04-17

Applicant: Citrix Systems, Inc.

Inventor： Saravana Annamalaisami ,  Raveendra Holla ,  Nishant Kumar Jain ,  Sharvari Mithyantha ,  Dhiraj Gedam

IPC: H04L12/24

CPC classification number: H04L41/0213 ,  H04L41/042 ,  H04L41/046 ,  H04L67/10 ,  H04L67/288

Abstract: The present disclosure is directed towards systems and methods for supporting Simple Network Management Protocol (SNMP) request operations over clustered networking devices. The system includes a cluster that includes a plurality of intermediary devices and an SNMP agent executing on a first intermediary device of the plurality of intermediary devices. The SNMP agent receives an SNMP GETNEXT request for an entity. Responsive to receipt of the SNMP GETNEXT request, the SNMP agent requests a next entity from each intermediary device of the plurality of intermediary devices of the cluster. To respond to the SNMP request, the SNMP agent selects a lexicographically minimum entity. The SNMP agent may select the lexicographically minimum entity from a plurality of next entities received via responses from each intermediary device of the plurality of intermediary devices.

Abstract translation: 本公开涉及用于支持通过集群网络设备的简单网络管理协议（SNMP）请求操作的系统和方法。 该系统包括一组包括多个中间装置和在多个中间装置的第一中介装置上执行的SNMP代理。 SNMP代理接收一个实体的SNMP GETNEXT请求。 响应于接收到SNMP GETNEXT请求，SNMP代理从集群的多个中间设备的每个中间设备请求下一个实体。 为了响应SNMP请求，SNMP代理选择一个字典最小实体。 SNMP代理可以从通过多个中间设备的每个中间设备的响应接收的多个下一个实体中选择词典上的最小实体。

公开(公告)号：US20140303934A1

公开(公告)日：2014-10-09

申请号：US13858010

申请日：2013-04-06

Applicant: CITRIX SYSTEMS, INC.

Inventor： Mahesh Mylarappa ,  Meghashree Iyengar ,  Saravana Annamalaisami ,  Rajesh Joshi

IPC: G06F11/30

CPC classification number: H04L67/2819 ,  G06F11/006 ,  G06F11/3006 ,  G06F11/3089 ,  G06F11/3409 ,  G06F11/3419 ,  G06F11/3433 ,  G06F11/3495 ,  G06F2201/875 ,  G06F2201/88 ,  H04L43/026 ,  H04L43/06 ,  H04L43/08 ,  H04L67/2804

Abstract: The present disclosure is directed towards systems and methods for application performance measurement. A device may receive a first document for transmission to a client, comprising instructions for the client to transmit a request for an embedded object. A flow monitor executed the device may generate a unique identification associated with the first document, the unique identification identifying a first access of the first document, and transmit the first document and unique identification to the client. The device may receive, from the client, a request for the embedded object comprising the unique identification, and transmit, to a server, the request for the embedded object at a transmit time. The device may receive, from the server, the embedded object at a receipt time, and may transmit a performance record comprising an identification of the object, the server, the transmit time, the receipt time, and the unique identification to a data collector.

Abstract translation: 本公开涉及用于应用性能测量的系统和方法。 设备可以接收用于传输到客户端的第一文档，包括用于客户端发送对嵌入对象的请求的指令。 所执行的流量监视器可以生成与第一文档相关联的唯一标识，唯一标识识别第一文档的第一访问，并将第一文档和唯一标识发送给客户端。 该设备可以从客户端接收包括唯一标识的嵌入式对象的请求，并在发送时间向服务器发送对嵌入对象的请求。 设备可以在接收时从服务器接收嵌入对象，并且可以向数据收集器发送包括对象的标识，服务器，发送时间，接收时间和唯一标识的性能记录。

公开(公告)号：US10757146B2

公开(公告)日：2020-08-25

申请号：US15876847

申请日：2018-01-22

Applicant: Citrix Systems, Inc.

Inventor： Saravana Annamalaisami ,  Krishna Khanal ,  Varun Taneja ,  Mahesh Mylarappa

IPC: H04L12/707 ,  H04L29/06 ,  H04L29/08

Abstract: The present invention is directed towards systems and methods for multipath transmission control protocol connection (MPTCP) management. A first device, intermediary between a second device and a third device, may establish a protocol control structure responsive to establishment of a MPTCP session between the first device and the second device. The first device may maintain, via the protocol control structure, an identification of a plurality of subflows comprising transmission control protocol (TCP) connections in the MPTCP session between the first device and the second device. The first device may convert or translate, via the protocol control structure, subflow-specific sequence identifiers of packets transmitted via each of the plurality of subflows, to sequence identifiers unique across the plurality of subflows and identifying related packets from each subflows to be processed at the third device. The third device may receive the packets with the converted sequence identifiers in a single TCP connection.

公开(公告)号：US20180027098A1

公开(公告)日：2018-01-25

申请号：US15676483

申请日：2017-08-14

Applicant: Citrix Systems, Inc.

Inventor： Varun Taneja ,  Mahesh Mylarappa ,  Saravana Annamalaisami

IPC: H04L29/06 ,  H04L29/08 ,  H04L12/807

CPC classification number: H04L69/16 ,  H04L47/27 ,  H04L69/326

Abstract: The present disclosure relates to methods and systems for dynamically changing an advertised window for a transport layer connection. A device can receive data from a server destined for an application. The device identifies the size of the application buffer corresponding to the application and advertises the application buffer size as a window size to the server. The device stores the data in the device memory. The device then determines the memory usage by comparing the memory usage to one or more predetermined thresholds. If the device determines that the memory usage is below a first predetermined threshold, the device can implement an aggressive dynamic receive buffering policy in which the device increases the advertised window size by a first increment. If the device determines that the memory usage is above the first threshold and below a second threshold, the device executes a more conservative dynamic receive buffering policy.

公开(公告)号：US20170230300A1

公开(公告)日：2017-08-10

申请号：US15443835

申请日：2017-02-27

Applicant: Citrix Systems, Inc.

Inventor： Ashwin Jagadish ,  Saravana Annamalaisami ,  Muthukumar Shunmugiah ,  Mohit Prakash Saxena

IPC: H04L12/805 ,  H04L29/08 ,  H04L12/46

CPC classification number: H04L47/365 ,  H04L12/4641 ,  H04L69/326

Abstract: Systems and methods of providing fine grained control over MSS values of transport layer connections. A device intermediary to a plurality of clients and a plurality of servers can identify a first MSS value based on a MTU value of a VLAN interface responsive to a request to establish a transport layer connection. Device determines that a MSS value of the VLAN is less than the first MSS value. Device updates, responsive to the determination, the first MSS value to a second MSS value corresponding to the MSS value of the VLAN. Device determines that an MSS value specified by a profile configured for a virtual server of the device is less than the second MSS value. Device updates the second MSS value to theMSS value of the profile responsive to determining that the MSS value specified by the profile is less than the second MSS value.