公开(公告)号：US08578040B2

公开(公告)日：2013-11-05

申请号：US10640847

申请日：2003-08-14

申请人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

IPC分类号： G06F15/16

CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/163

摘要： A dynamically-enforceable application-controlled quasi-reliable extension to TCP permits a client application to dynamically set a percent loss tolerance for data transmission reliability through network input/output system calls to the TCP, thereby programming the transport layer to optimistically acknowledge non-critical missing frames. The reliability requirement can be dynamically set within TCP to the level of reliability required for specific data frames within the data stream during the data transfer. Based on this loss tolerance specified, the TCP layer makes a determination whether to trigger a retransmission or continue delivering out-of-order frames to the application. A forced acknowledgement frame is sent for each missing packet until the number missing packets causing forced acknowledgments within the current receive buffer frame exceeds the loss tolerance. This process avoids needless retransmissions and permits the TCP data flow and sliding window to advance uninterrupted, thereby providing substantial performance benefits to network throughput.

摘要翻译： 对TCP的动态可执行的应用程序控制的准可靠扩展允许客户端应用程序通过网络输入/输出系统调用TCP动态设置数据传输可靠性的百分比损耗容限，从而编程传输层，以乐观地确认非关键 丢失帧。 可靠性要求可以在TCP内动态设置为在数据传输期间数据流内特定数据帧所需的可靠性水平。 基于指定的丢失容限，TCP层确定是否触发重传，或者继续向应用发送无序帧。 为每个丢失的数据包发送强制确认帧，直到导致当前接收缓冲区帧内的强制确认的数据丢失数据包超过丢失容限。 该过程避免了不必要的重传，并允许TCP数据流和滑动窗口不间断地前进，从而为网络吞吐量提供显着的性能优势。

公开(公告)号：US07483990B2

公开(公告)日：2009-01-27

申请号：US10443667

申请日：2003-05-22

申请人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

发明人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

IPC分类号： G06F15/16

CPC分类号： H04L47/263 ,  H04L47/10 ,  H04L47/193 ,  H04L47/30 ,  H04L67/14 ,  H04L69/16 ,  H04L69/163 ,  H04L69/329

摘要： The server side Transfer Control Protocol is modified so that the server returns a SYNACK message with the window size equal to zero if the server is busy. When a client sends a TCP connection request and receives a synchronization acknowledgement message with the window size equal to zero, the client knows that the server received the connection request and that the server is busy. The client may then send an acknowledgement message to complete the three-way synchronization handshake, thus successfully completing the connection. Thereafter, the client side TCP may probe the server side TCP until a window update message is received from the server. When the server sends a window update message to set the window size to a non-zero size, the client knows that the server is no longer busy and the client application may then use the TCP connection.

摘要翻译： 修改服务器端传输控制协议，以便服务器返回SYNACK消息，如果服务器正忙，则窗口大小等于零。 当客户端发送TCP连接请求并接收到窗口大小等于零的同步确认消息时，客户端知道服务器接收到连接请求，并且服务器正忙。 然后，客户端可以发送确认消息以完成三次同步握手，从而成功地完成连接。 此后，客户端TCP可以探测服务器端TCP，直到从服务器接收到窗口更新消息。 当服务器发送窗口更新消息以将窗口大小设置为非零大小时，客户端知道服务器不再忙，客户端应用程序可能会使用TCP连接。

公开(公告)号：US07236476B2

公开(公告)日：2007-06-26

申请号：US10677656

申请日：2003-10-02

申请人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

IPC分类号： H04Q7/00 ,  H04L12/56

CPC分类号： H04W36/0011 ,  H04W80/06 ,  H04W88/14

摘要： Responsive to detecting a need for a mobile device to transfer out of a first network, requests are sent from the mobile device to a communication endpoint in mSCTP. The first request is to stop transmissions to a first address of said mobile device. The second request is to add an intermediary address of a mobility support service designated for receiving any communications already in transmission when the first request is sent. The communication link for the mobile device is then transitioned from the current address at the first network to a second address at a second network. The first network and the second network are non-intersecting networks. The mobile device then indicates to the mobility support service that the handover from the first network to the second network is complete. The mobility support service responds to the completion by sending a third request in mSCTP to the communication endpoint to continue communication with the mobile client at the second address.

摘要翻译： 响应于检测移动设备从第一网络传出的需求，请求从移动设备发送到mSCTP中的通信端点。 第一个请求是停止对所述移动设备的第一地址的传输。 第二个请求是在发送第一个请求时添加指定用于接收已经在传输中的任何通信的移动性支持服务的中间地址。 然后，用于移动设备的通信链路从第一网络的当前地址转换到第二网络处的第二地址。 第一个网络和第二个网络是不相交的网络。 然后，移动设备向移动性支持服务指示从第一网络到第二网络的切换是完整的。 移动支持服务通过在mSCTP发送第三请求到通信端点来响应完成，以继续与第二地址处的移动客户端通信。

公开(公告)号：US07568030B2

公开(公告)日：2009-07-28

申请号：US12027044

申请日：2008-02-06

申请人： Dwip N Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

发明人： Dwip N Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

IPC分类号： G06F13/00

CPC分类号： G06F9/5027 ,  G06F9/544 ,  G06F2209/5018 ,  G06F2209/508

摘要： A method, system, and program for monitoring thread usage to dynamically control a thread pool are provided. An application running on the server system invokes a listener thread on a listener socket for receiving client requests at the server system and passing the client requests to one of multiple threads waiting in a thread pool. Additionally, the application sends an ioctl call in blocking mode on the listener thread. A TCP layer within the server system detects the listener thread in blocking mode and monitors a thread count of at least one of a number of incoming requests waiting to be processed and a number of said plurality of threads remaining idle in the thread pool over a sample period. Once the TCP layer detects a thread usage event, the ioctl call is returned indicating the thread usage event with the thread count, such that a number of threads in the thread pool may be dynamically adjusted to handle the thread count.

摘要翻译： 提供了一种用于监视线程使用以动态控制线程池的方法，系统和程序。 在服务器系统上运行的应用程序调用侦听器套接字上的侦听器线程，以便在服务器系统上接收客户端请求，并将客户端请求传递给等待线程池的多个线程之一。 此外，应用程序在侦听器线程上以阻塞模式发送ioctl调用。 服务器系统内的TCP层以阻塞模式检测侦听器线程，并且监视等待被处理的多个传入请求中的至少一个的线程计数，并且线程池中的多个线程在一个样本上保持空闲 期。 一旦TCP层检测到线程使用事件，将返回指示线程计数的线程使用事件的ioctl调用，以使线程池中的线程数可以被动态调整以处理线程计数。

公开(公告)号：US20080177829A1

公开(公告)日：2008-07-24

申请号：US12055220

申请日：2008-03-25

申请人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Lilian Sylvia Fernandes ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Lilian Sylvia Fernandes ,  Venkat Venkatsubra

IPC分类号： G06F15/16

CPC分类号： H04L63/08 ,  H04L69/16 ,  H04L69/165

摘要： Data communications through a split connection proxy in a data communications protocol, including receiving in a proxy from a client, asynchronously with respect to any other messages between the client and the proxy, one or more client messages including client message data items including a connection request for a connection between the client and the proxy, destination connection data identifying a destination server, and a message from the client to the destination server; and sending from the proxy to the server, asynchronously with respect to any messages between the client and the proxy and asynchronously with respect to any other messages between the proxy and the server, one or more proxy messages including proxy message data items including a connection request for a connection between the proxy and the destination server and the message from the client to the destination server.

摘要翻译： 通过数据通信协议中的分离连接代理进行的数据通信，包括从客户端接收代理，与客户端和代理之间的任何其他消息异步地，一个或多个客户端消息包括包括连接请求的客户端消息数据项 用于客户端和代理之间的连接，标识目的地服务器的目的地连接数据以及从客户端到目的地服务器的消息; 以及相对于所述客户机和所述代理之间的任何消息异步地从所述代理发送到所述服务器，并且相对于所述代理服务器和所述服务器之间的任何其他消息异步地，一个或多个代理消息包括代理消息数据项，包括连接请求 用于代理和目标服务器之间的连接以及从客户端到目标服务器的消息。

公开(公告)号：US07363369B2

公开(公告)日：2008-04-22

申请号：US10687236

申请日：2003-10-16

申请人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

IPC分类号： G06F13/00

CPC分类号： G06F9/5027 ,  G06F9/544 ,  G06F2209/5018 ,  G06F2209/508

摘要： A method, system, and program for monitoring thread usage to dynamically control a thread pool are provided. An application running on the server system invokes a listener thread on a listener socket for receiving client requests at the server system and passing the client requests to one of multiple threads waiting in a thread pool. Additionally, the application sends an ioctl call in blocking mode on the listener thread. A TCP layer within the server system detects the listener thread in blocking mode and monitors a thread count of at least one of a number of incoming requests waiting to be processed and a number of said plurality of threads remaining idle in the thread pool over a sample period. Once the TCP layer detects a thread usage event, the ioctl call is returned indicating the thread usage event with the thread count, such that a number of threads in the thread pool may be dynamically adjusted to handle the thread count.

摘要翻译： 提供了一种用于监视线程使用以动态控制线程池的方法，系统和程序。 在服务器系统上运行的应用程序调用侦听器套接字上的侦听器线程，以便在服务器系统上接收客户端请求，并将客户端请求传递给线程池中等待的多个线程之一。 此外，应用程序在侦听器线程上以阻塞模式发送ioctl调用。 服务器系统内的TCP层以阻塞模式检测侦听器线程，并且监视等待被处理的多个传入请求中的至少一个的线程计数，并且线程池中的多个线程在一个样本上保持空闲 期。 一旦TCP层检测到线程使用事件，将返回指示线程计数的线程使用事件的ioctl调用，以使线程池中的线程数可以被动态调整以处理线程计数。

公开(公告)号：US07440453B2

公开(公告)日：2008-10-21

申请号：US10988291

申请日：2004-11-12

申请人： Dwip N. Banerjee ,  Ranadip Das ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Ranadip Das ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

IPC分类号： H04L12/28

CPC分类号： H04L61/1511 ,  H04L29/12066 ,  H04L29/12132 ,  H04L43/0811 ,  H04L61/1552

摘要： Determining availability of a destination for computer network communications that include providing on a caching device a destination availability cache comprising at least one cache entry representing availability of a destination and providing, from the caching device to a source, through computer network communications, information indicating the availability of the destination. In typical embodiments, the cache entry comprises a network address of a destination device and a time limitation for the cache entry.

摘要翻译： 确定用于计算机网络通信的目的地的可用性，其包括在高速缓存设备上提供目标可用性缓存，该目的地可用性缓存包括表示目的地的可用性的至少一个缓存条目，并且通过计算机网络通信从缓存设备向源提供指示 目的地的可用性。 在典型实施例中，高速缓存条目包括目的地设备的网络地址和高速缓存条目的时间限制。

公开(公告)号：US20080294795A1

公开(公告)日：2008-11-27

申请号：US12187211

申请日：2008-08-06

申请人： Dwip N. Banerjee ,  Ranadip Das ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Ranadip Das ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

IPC分类号： G06F15/16

CPC分类号： H04L61/1511 ,  H04L29/12066 ,  H04L29/12132 ,  H04L43/0811 ,  H04L61/1552

摘要： Determining availability of a destination for computer network communications that include providing on a caching device a destination availability cache comprising at least one cache entry representing availability of a destination and providing, from the caching device to a source, through computer network communications, information indicating the availability of the destination. In typical embodiments, the cache entry comprises a network address of a destination device and a time limitation for the cache entry.

摘要翻译： 确定用于计算机网络通信的目的地的可用性，其包括在高速缓存设备上提供目标可用性缓存，该目的地可用性缓存包括表示目的地的可用性的至少一个缓存条目，并且通过计算机网络通信从缓存设备向源提供指示 目的地的可用性。 在典型实施例中，高速缓存条目包括目的地设备的网络地址和高速缓存条目的时间限制。

公开(公告)号：US07505484B2

公开(公告)日：2009-03-17

申请号：US10926584

申请日：2004-08-26

申请人： Ketan Priyakant Pancholi ,  Dwip N. Banerjee ,  Deanna Lynn Quigg Brown ,  Venkat Venkatsubra

发明人： Ketan Priyakant Pancholi ,  Dwip N. Banerjee ,  Deanna Lynn Quigg Brown ,  Venkat Venkatsubra

IPC分类号： H04J3/16

CPC分类号： H04L69/166 ,  H04L67/32

摘要： A method, system, and computer program product for optimizing a message size for communication in a communication network are disclosed. The method comprises identifying a connection to a target, sending to a path maximum transmission unit value server (which is not the target) a request for a path maximum transmission unit value for the connection to the target, and, in response to receiving the path maximum transmission unit value for the connection to the target from the server, optimizing a communication by sending to the target a packet having a size in accordance with the value.

摘要翻译： 公开了一种用于优化通信网络中的通信的消息大小的方法，系统和计算机程序产品。 该方法包括识别与目标的连接，向路径发送最大传输单元值服务器（其不是目标）对用于到目标的连接的路径最大传输单元值的请求，并且响应于接收到路径 用于从服务器到目标的连接的最大传输单元值，通过向目标发送具有根据该值的大小的分组来优化通信。

公开(公告)号：US07742419B2

公开(公告)日：2010-06-22

申请号：US12101765

申请日：2008-04-11

申请人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

发明人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

IPC分类号： H04L1/00

CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163

摘要： TCP congestion avoidance is implemented upon retransmission of a packet and is reverted back to the original congestion state upon receipt of an early acknowledgement (ACK), indicating reordering of packets, thereby eliminating a needless restriction on TCP bandwidth. Upon receiving an ACK to a retransmitted packet, it is determined if the ACK resulted from receipt of the original reordered packet or the retransmitted packet, based on the arrival time of the ACK at the sender. If the round-trip-time (RTT) for the retransmitted packet is much lower than the average or current calculated RTT for the network link between sender and receiver, then the retransmission occurred as a result of a reordering event, and the congestion window is restored back to its value prior to the retransmission, thereby permitting the network link to continue operating at its original increased throughput.

摘要翻译： TCP拥塞避免在分组重传时实现，并且在接收到指示重新排序分组的早期确认（ACK）时被恢复到原始拥塞状态，从而消除对TCP带宽的不必要的限制。 在向重传的分组接收到ACK时，基于ACK在发送方的到达时间确定ACK是否从接收到原始重新排序的分组或重传分组而产生。 如果重发分组的往返时间（RTT）远低于发送方和接收方之间的网络链路的平均或当前计算的RTT，则重新发送作为重排序事件的结果，拥塞窗口为 在重传之前恢复其值，从而允许网络链路以其原始增加的吞吐量继续运行。