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    • 10. 发明授权
    • System for the reliable, fast, low-latency communication of object state
updates over a computer network by combining lossy and lossless
communications
    • 通过组合有损和无损通信在计算机网络上进行可靠,快速,低延迟的对象状态更新通信的系统
    • US6006254A
    • 1999-12-21
    • US920585
    • 1997-08-29
    • Richard C. WatersDavid Anderson
    • Richard C. WatersDavid Anderson
    • G06F13/00G06F9/52H04L12/18H04L29/06G06F15/16
    • H04L12/1868H04L67/38H04L69/164H04L69/16
    • A system for fast, efficient and reliable communication of object state irmation among a group of processes combines the use of a fast, but lossy and thus unreliable communications channel to the group of processes and a server coupled to the group for providing data which has been lost in the multicasting. In one embodiment, a central server supports reliability and rapid joining while using UDP multicast messaging to achieve rapid interaction and low bandwidth. Differential messages are sent over the lossy channel to compactly describe how to compute the new state of an object from any of several previous states. Such a description can be interpreted even if some number of prior descriptions were not received, greatly reducing the need for explicit, round-trip message repairs while also conserving bandwidth. In one embodiment, the central server communicates with each member of the group over a reliable channel to robustly detect and repair objects affected by lost messages.
    • 用于在一组进程之间快速,有效和可靠地传送对象状态信息的系统将使用快速但有损且因此不可靠的通信信道与该组进程组合,以及耦合到该组的服务器提供已经被 丢失在组播中。 在一个实施例中,中央服务器支持可靠性和快速加入,同时使用UDP多播消息传递来实现快速交互和低带宽。 差分消息通过有损通道发送以紧凑地描述如何从几个先前状态中的任一状态计算对象的新状态。 即使没有接收到一些先前的描述,也可以解释这样的描述,大大减少了显式的往返消息修复的需要,同时也节省了带宽。 在一个实施例中,中央服务器通过可靠信道与组中的每个成员进行通信,以鲁棒地检测和修复受丢失消息影响的对象。