update Rocket.md

.idea/workspace.xml

@@ -725,14 +725,14 @@
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Rocket.md

@@ -601,7 +601,6 @@ TCP是一个双向通信协议，通信双方都有能力发送信息，并接
 
 因为当Server端收到Client端的SYN连接请求报文后，可以直接发送SYN+ACK报文。其中ACK报文是用来应答的，SYN报文是用来同步的。但是关闭连接时，当Server端收到FIN报文时，很可能并不会立即关闭SOCKET，所以只能先回复一个ACK报文，告诉Client端，"你发的FIN报文我收到了"。只有等到我Server端所有的报文都发送完了，我才能发送FIN报文，因此不能一起发送。故需要四步握手。
 
-
 ## 数据结构与算法
 
 ### 排序算法