摘要： 随着连入网络中的各种设备特别是移动无线设备的增多，有必要在网络中实现一种叫做服务发现的机制使得客户能够动态地、自动地发现其所需的服务并访问它。该文概括了服务发现的主要问题及一般要求，根据服务的组织和发布方式介绍了服务发现机制的4种主要模式，并对比分析了当前较有影响的几种协议和方案；最后，讨论了仍然有待解决的一些问题。

关键词: 服务, 客户, 服务目录, 服务发现

Abstract: With the increasement of devices, especially mobile wireless devices in networks, it is necessary to provide a mechanism of service discovery so that client can discover the needed service automatically and dynamically and then access to it. In this paper, the principal problems of service discovery and common requirements to its are generlized, four leading models of service discovery are introduced according to the organization and publication of services. The analysis and comparison of several available protocols and projects of service discovery are also presented. At last, the open issues about service discovery and conclusion are put forward.

中图分类号: 

• TP393.03