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diff --git a/src/content/posts/计算机网络/TCP四次挥手.md b/src/content/posts/计算机网络/TCP四次挥手.md
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+++ b/src/content/posts/计算机网络/TCP四次挥手.md
@@ -0,0 +1,12 @@
+---
+title: 说说TCP四次挥手
+published: 2025-09-16
+description: ''
+image: ''
+tags: [计算机网络,TCP四次挥手]
+category: '计算机网络'
+draft: false 
+lang: ''
+---
+
+
diff --git a/src/content/posts/计算机网络/说说TCP拥塞控制.md b/src/content/posts/计算机网络/说说TCP拥塞控制.md
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--- /dev/null
+++ b/src/content/posts/计算机网络/说说TCP拥塞控制.md
@@ -0,0 +1,49 @@
+---
+title: 说说TCP拥塞控制步骤
+published: 2025-09-16
+description: ''
+image: ''
+tags: [TCP拥塞控制,TCP,计算机网络]
+category: '计算机网络'
+draft: false 
+lang: ''
+---
+![](https://blog.meowrain.cn/api/i/2025/09/16/rcsxk4-1.webp)
+# 慢启动
+发送方在连接建立初期，缓慢地增加数据发送速率。
+![](https://blog.meowrain.cn/api/i/2025/09/16/s4e9am-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s8f7jc-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s8kg4t-1.webp)
+
+# 拥塞避免
+![](https://blog.meowrain.cn/api/i/2025/09/16/s8m7zi-1.webp)
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/s8x9i0-1.webp)
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/s90p0f-1.webp)
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/s91r9m-1.webp)
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/s942bz-1.webp)
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/s954fw-1.webp)
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/s97ozk-1.webp)
+
+# 拥塞发生
+![](https://blog.meowrain.cn/api/i/2025/09/16/s996bt-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9j62w-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9k9xw-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9mcew-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9o1fm-1.webp)
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9pnms-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9qvtz-1.webp)
+# 快速恢复
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9tjrb-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/s9udvm-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/sa4di7-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/sa6axn-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/sa858d-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/sa92ie-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/saaosr-1.webp)
\ No newline at end of file
diff --git a/src/content/posts/计算机网络/说说TCP的三次握手.md b/src/content/posts/计算机网络/说说TCP的三次握手.md
new file mode 100644
index 0000000..4a913dc
--- /dev/null
+++ b/src/content/posts/计算机网络/说说TCP的三次握手.md
@@ -0,0 +1,33 @@
+---
+title: 说说TCP的三次握手
+published: 2025-09-16
+description: ''
+image: ''
+tags: [TCP,计算机网络]
+category: '计算机网络'
+draft: false 
+lang: ''
+---
+
+# 流程
+客户端给服务端发送一个SYN（同步序列号消息）给服务器，服务器收到后回复一个SYN + ACK（同步序列编号-确认）消息，最后客户端再发送一个ACK(确认)消息确认服务器已经收到了SYN-ACK消息，从而完成三次握手，建立起可靠的TCP连接。
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/qkipdz-1.webp)
+
+# 为什么需要三次握手
+- 避免历史错误连接的建立，减少通信双方不必要的资源消耗
+- 帮助通信双方同步初始化序列号
+
+> 所以为什么三次能解决历史错误连接的问题？
+网络情况可能比较复杂，发送方第一次发送请求后，可能由于网络原因被阻塞住了，这个时候发送方可能又会再次发送请求，如果说握手只有两次，那么接收方只能拒绝或者接受，但是无法分清请求是旧的还是新的
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/qz2t5q-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/qzb8ro-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/r2w1yc-1.webp)
+![](https://blog.meowrain.cn/api/i/2025/09/16/qnblw0-1.webp)
+
+
+![](https://blog.meowrain.cn/api/i/2025/09/16/r3b7la-1.webp)
+
+# 为什么不是四次握手
+中间的syn + ack把两步合并了，精简了连接过程。
\ No newline at end of file