C++联合体以及大小端
http://www.cnblogs.com/ziwuge/archive/2010/12/27/1917765.html
http://blog.csdn.net/infoworld/article/details/42131387
http://blog.csdn.net/kuai0705/article/details/20841133
C++单例模式
http://www.cnblogs.com/cxjchen/p/3148582.html
C++内存
http://blog.csdn.net/benny5609/article/details/2217258
http://blog.csdn.net/jack__h/article/details/5419856
网络通信之套接字
http://blog.csdn.net/xuehongnizhao/article/details/50583118
http://blog.csdn.net/ljianhui/article/details/10477427
Java版本:
http://www.cnblogs.com/mengdd/archive/2013/03/10/2952616.html
TCP三次握手与套接字
http://blog.csdn.net/lvyuan30276/article/details/50458572
三次握手四次握手
http://www.cnblogs.com/yuxingfirst/archive/2013/06/30/3163400.html
指针与引用:
http://www.cnblogs.com/dolphin0520/archive/2011/04/03/2004869.html
http://www.cnblogs.com/tracylee/archive/2012/12/04/2801519.html
深拷贝与浅拷贝
http://blog.csdn.net/lpp0900320123/article/details/39007047
C++各种构造函数
http://www.tuicool.com/articles/EjUnYb
拷贝构造函数为什么是引用:
http://www.cnblogs.com/this-543273659/archive/2011/09/18/2180575.html