SOCKET，TCP/UDP,HTTP,https，FTP

Http和Https的区别

http://www.jianshu.com/p/37654eb66b58

HTTP和TCP的区别

http://www.jianshu.com/p/ef1811b3b44e

IP、TCP和HTTP协议

http://www.jianshu.com/p/62e08cdd358c

TCP/IP、HTTP、SOCKET 的联系和区别

http://www.jianshu.com/p/dd4c48eb095c

SOCKET，TCP/UDP,HTTP,FTP

http://www.jianshu.com/p/d2432bb078ea

苹果证书和公钥私钥加密

http://blog.csdn.net/electronmc/article/details/45014591