[http协议](web/http.md) [http和https区别](web/http%E5%92%8Chttps%E5%8C%BA%E5%88%AB.md) [Cookie和session](web/Cookie%E5%92%8Csession.md) [TCP三次握手、4次挥手](web/TCP%E4%B8%89%E6%AC%A1%E6%8F%A1%E6%89%8B%E3%80%814%E6%AC%A1%E6%8F%A1%E6%89%8B.md) [TCP的time_wait和close_wait](web/TCP%E7%9A%84time_wait%E5%92%8Cclose_wait.md)