楼主说的这三个是ACE提供给我们已经做好的例子，楼主可以参考一下，比较简单，我就不翻译了。
JAWS -- This is a high-performance HTTP 1.0 web server
written with ACE. It illustrates a number of sophisticated ACE
concurrency and event demultiplexing strategies.
. JAWS2 is an implementation of HTTP/1.0 similar to JAWS. It has
no HTTP/1.1 features. It extends JAWS to add a more
flexible I/O and concurrency framework utilizing strategies.
. JAWS3 is a framework that provides a state-machine interface
to developing a server, but it does not implement HTTP.
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JAWS -- This is a high-performance HTTP 1.0 web server
written with ACE. It illustrates a number of sophisticated ACE
concurrency and event demultiplexing strategies.
. JAWS2 is an implementation of HTTP/1.0 similar to JAWS. It has
no HTTP/1.1 features. It extends JAWS to add a more
flexible I/O and concurrency framework utilizing strategies.
. JAWS3 is a framework that provides a state-machine interface
to developing a server, but it does not implement HTTP.