csutil is an library that is convenient for users to do network programing. Users may just call Client/Serverclass to arrive to your purpose.

1. Client/Server provides nonblock network programming
2. Client/Server deals with network data, users may just pay attention to users' data
3. Separate Network Processing and Storing, users can define his own storing
4. Multithread processing, which can arrive to high performance

1. cd csutil/demo/server && make && ./server
2. cd csutil/demo/client && make && ./client

1. Provide storing base on memory or disk
2. Distrubted processing