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家住北京城的肖家家境殷实，平常无奇。肖父（刘子枫 饰）是一个退休的中学校长，肖母（童正维 饰）则是一个街道上爱咋呼的老太太。老两口的生活平淡，悠闲自在，儿女们也多有出息，为邻里羡慕。不过，随着大女儿肖云楚（赵明明 饰）从国外归来，麻烦也接踵而至。一年。习惯就好。TCP is connection-oriented, and a connection must be established between either side before sending data to the other. In TCP/IP protocol, TCP protocol provides reliable connection service, and the connection is initialized by three-way handshake. The purpose of the three-way handshake is to synchronize the serial numbers and acknowledgement numbers of both parties and exchange TCP window size information. The process of shaking hands can be represented by the following figure紫茄听了就喜悦地笑，青莲也咧着嘴巴，端着碟子四处转，让大哥、表姐，又递到淼淼和香荽面前。1977年冬天，徐天和费兵前往县城报名，参加文革后第一次高考。他们是陕西西安插队知青，是关系非常铁的哥们。徐天聪明绝顶，记忆力惊人，出身干部家庭的费兵对他非常佩服。半路上，徐天突然想起忘带公社介绍信，情急之下居然私刻公章，伪造介绍信。虽然顺利报名，却埋下了巨大隐忧。