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winhttp api和com对象版区别

Posted on 10 5 月 2017 by simon

到底该用哪个接口，微软这么说，api方式：功能齐全，不过调用复杂些；com接口，调用简单，属于一个封装，有部分功能缺失。https://msdn.microsoft.com/zh-cn/library/aa383158(v=vs.85).aspx

C/C++ API COM interface
Advantages
  • Responses can be processed in chunks, which is more efficient.
  • POST operations can also be processed in chunks, speeding processing time.
  • AutoProxy support.
  • Access to the full feature set of WinHTTP.
  • Binary data can easily be handled.
  • Creating an application is easy and requires fewer lines of code than the C/C++ API.
  • The interface can be used by scripting languages.
Disadvantages
  • Processing is more complex.
  • The C/C++ API requires more steps than the COM interface to perform the same actions.
  • Setting up a request takes more code.
  • The COM interface does not provide access to the full feature set of WinHTTP.
  • It is difficult to handle binary data types in some scripting languages, such as VBScript and JScript.
  • The COM interface does not support AutoProxy.
  • Applications must use the COM APARTMENT_THREADED model.
  • Before a response can begin being processed, the entire response must first be received and buffered.

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