基于托管完成端口的流媒体交换矩阵模型

在设计服务器数目较多的流媒体业务时,如果客户端在多个服务器之间频繁切换,不仅会加重服务器的负担,还会增大对动态变化的客户组的管理难度.流媒体交换矩阵通过转发流媒体数据包,在两者之间建立映射关系,较好地解决了这一问题.为提高流媒体交换矩阵对数据包的转发速率,在对两种典型的网络模型进行比较之后,提出结合.NET平台,以托管完成端口机制作为流媒体交换矩阵的底层网络I/O模型.经测试,不仅可有效提高对数据包的转发速率,而且做到了跨平台实现,扩大了流媒体交换矩阵产品的应用范围.

Streaming switcher model by managed I/O completion port

When clients switch between multi-servers in multimedia applications which have a lot of servers, it not only burdens the data-provided servers, but also increases the difficulty of managing client groups. Streaming switcher resolved this problem well by es- tablishing mapping-relationship between clients and servers via retranslate multimedia data package. In order to accelerate the retranslate rate of the streaming switcher, a model is provided by managed I/O completion port mechanism on. NET platform. The test result show the package receive-retranslate rate is increased and the code can run across platforms to extend the applied area.