为了实现自定义的协议，或定制众所周知的协议的实现，程序员需要掌握基本的socket基础结构的工作知识。
To implement custom protocols, or to customize implementation of well-known protocols, a programmer needs a working knowledge of the basic socket infrastructure.
类型必须是完全类型，即必须是内置类型或者是已经定义的程序员自定义类型。
The type must be a complete type: it must either be a built-in type or a programmer-defined type that has already been defined.
我是一个网站开发者，自定义的程序员，图形设计师，互联网有一手有15年以上的经验，和业务，经营顾问。
I am a website developer, custom programmer, graphic designer, a Internet marketer with over 15 years of experience, and a business to business consultant.
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