{"id":46587,"date":"2023-12-11T15:09:13","date_gmt":"2023-12-11T07:09:13","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=46587"},"modified":"2023-12-11T15:09:13","modified_gmt":"2023-12-11T07:09:13","slug":"tcp-%e4%b8%89%e6%ac%a1%e6%8f%a1%e6%89%8b%e5%92%8c%e5%9b%9b%e6%ac%a1%e6%8c%a5%e6%89%8b%ef%bc%9f-5","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/tcp-%e4%b8%89%e6%ac%a1%e6%8f%a1%e6%89%8b%e5%92%8c%e5%9b%9b%e6%ac%a1%e6%8c%a5%e6%89%8b%ef%bc%9f-5\/","title":{"rendered":"TCP \u4e09\u6b21\u63e1\u624b\u548c\u56db\u6b21\u6325\u624b\uff1f"},"content":{"rendered":"

“`” \u4e3a\u4e86\u51c6\u786e\u65e0\u8bef\u5730\u628a\u6570\u636e\u9001\u8fbe\u76ee\u6807\u5904\uff0cTCP\u534f\u8bae\u91c7\u7528\u4e86\u4e09\u6b21\u63e1\u624b\u7b56\u7565\u3002<\/p>\n

<h3>2.1 TCP \u4e09\u6b21\u63e1\u624b\u6f2b\u753b\u56fe\u89e3<\/h3><\/p>\n

\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u4e0b\u9762\u7684\u4e24\u4e2a\u673a\u5668\u4eba\u901a\u8fc73\u6b21\u63e1\u624b\u786e\u5b9a\u4e86\u5bf9\u65b9\u80fd\u6b63\u786e\u63a5\u6536\u548c\u53d1\u9001\u6d88\u606f(\u56fe\u7247\u6765\u6e90\uff1a\u300a\u56fe\u89e3HTTP\u300b)\u3002<img alt=""TCP\u4e09\u6b21\u63e1\u624b"" src=""https:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/2019\/7\/\u4e09\u6b21\u63e1\u624b.png"" style=""width: 100%;""><\/p>\n

<strong>\u7b80\u5355\u793a\u610f\u56fe\uff1a<\/strong><img alt=""TCP\u4e09\u6b21\u63e1\u624b"" src=""https:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/2019\/7\/\u4e09\u6b21\u63e1\u624b2.png"" style=""width: 100%;""><\/p>\n

<ul><li>\u5ba2\u6237\u7aef\u2013\u53d1\u9001\u5e26\u6709 SYN \u6807\u5fd7\u7684\u6570\u636e\u5305\u2013\u4e00\u6b21\u63e1\u624b\u2013\u670d\u52a1\u7aef<\/li><li>\u670d\u52a1\u7aef\u2013\u53d1\u9001\u5e26\u6709 SYN\/ACK \u6807\u5fd7\u7684\u6570\u636e\u5305\u2013\u4e8c\u6b21\u63e1\u624b\u2013\u5ba2\u6237\u7aef<\/li><li>\u5ba2\u6237\u7aef\u2013\u53d1\u9001\u5e26\u6709\u5e26\u6709 ACK \u6807\u5fd7\u7684\u6570\u636e\u5305\u2013\u4e09\u6b21\u63e1\u624b\u2013\u670d\u52a1\u7aef<\/li><\/ul><\/p>\n

<h3>2.2 \u4e3a\u4ec0\u4e48\u8981\u4e09\u6b21\u63e1\u624b<\/h3><\/p>\n

<strong>\u4e09\u6b21\u63e1\u624b\u7684\u76ee\u7684\u662f\u5efa\u7acb\u53ef\u9760\u7684\u901a\u4fe1\u4fe1\u9053\uff0c\u8bf4\u5230\u901a\u8baf\uff0c\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u6570\u636e\u7684\u53d1\u9001\u4e0e\u63a5\u6536\uff0c\u800c\u4e09\u6b21\u63e1\u624b\u6700\u4e3b\u8981\u7684\u76ee\u7684\u5c31\u662f\u53cc\u65b9\u786e\u8ba4\u81ea\u5df1\u4e0e\u5bf9\u65b9\u7684\u53d1\u9001\u4e0e\u63a5\u6536\u662f\u6b63\u5e38\u7684\u3002<\/strong><\/p>\n

\u7b2c\u4e00\u6b21\u63e1\u624b\uff1aClient \u4ec0\u4e48\u90fd\u4e0d\u80fd\u786e\u8ba4\uff1bServer \u786e\u8ba4\u4e86\u5bf9\u65b9\u53d1\u9001\u6b63\u5e38\uff0c\u81ea\u5df1\u63a5\u6536\u6b63\u5e38<\/p>\n

\u7b2c\u4e8c\u6b21\u63e1\u624b\uff1aClient \u786e\u8ba4\u4e86\uff1a\u81ea\u5df1\u53d1\u9001\u3001\u63a5\u6536\u6b63\u5e38\uff0c\u5bf9\u65b9\u53d1\u9001\u3001\u63a5\u6536\u6b63\u5e38\uff1bServer \u786e\u8ba4\u4e86\uff1a\u5bf9\u65b9\u53d1\u9001\u6b63\u5e38\uff0c\u81ea\u5df1\u63a5\u6536\u6b63\u5e38<\/p>\n

\u7b2c\u4e09\u6b21\u63e1\u624b\uff1aClient \u786e\u8ba4\u4e86\uff1a\u81ea\u5df1\u53d1\u9001\u3001\u63a5\u6536\u6b63\u5e38\uff0c\u5bf9\u65b9\u53d1\u9001\u3001\u63a5\u6536\u6b63\u5e38\uff1bServer \u786e\u8ba4\u4e86\uff1a\u81ea\u5df1\u53d1\u9001\u3001\u63a5\u6536\u6b63\u5e38\uff0c\u5bf9\u65b9\u53d1\u9001\u3001\u63a5\u6536\u6b63\u5e38<\/p>\n

\u6240\u4ee5\u4e09\u6b21\u63e1\u624b\u5c31\u80fd\u786e\u8ba4\u53cc\u53d1\u6536\u53d1\u529f\u80fd\u90fd\u6b63\u5e38\uff0c\u7f3a\u4e00\u4e0d\u53ef\u3002<\/p>\n

<h3>2.3 \u4e3a\u4ec0\u4e48\u8981\u4f20\u56de SYN<\/h3><\/p>\n

\u63a5\u6536\u7aef\u4f20\u56de\u53d1\u9001\u7aef\u6240\u53d1\u9001\u7684 SYN \u662f\u4e3a\u4e86\u544a\u8bc9\u53d1\u9001\u7aef\uff0c\u6211\u63a5\u6536\u5230\u7684\u4fe1\u606f\u786e\u5b9e\u5c31\u662f\u4f60\u6240\u53d1\u9001\u7684\u4fe1\u53f7\u4e86\u3002<\/p>\n

<blockquote>SYN \u662f TCP\/IP \u5efa\u7acb\u8fde\u63a5\u65f6\u4f7f\u7528\u7684\u63e1\u624b\u4fe1\u53f7\u3002\u5728\u5ba2\u6237\u673a\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u6b63\u5e38\u7684 TCP \u7f51\u7edc\u8fde\u63a5\u65f6\uff0c\u5ba2\u6237\u673a\u9996\u5148\u53d1\u51fa\u4e00\u4e2a SYN \u6d88\u606f\uff0c\u670d\u52a1\u5668\u4f7f\u7528 SYN-ACK \u5e94\u7b54\u8868\u793a\u63a5\u6536\u5230\u4e86\u8fd9\u4e2a\u6d88\u606f\uff0c\u6700\u540e\u5ba2\u6237\u673a\u518d\u4ee5 ACK(Acknowledgement[\u6c49\u8bd1\uff1a\u786e\u8ba4\u5b57\u7b26 ,\u5728\u6570\u636e\u901a\u4fe1\u4f20\u8f93\u4e2d\uff0c\u63a5\u6536\u7ad9\u53d1\u7ed9\u53d1\u9001\u7ad9\u7684\u4e00\u79cd\u4f20\u8f93\u63a7\u5236\u5b57\u7b26\u3002\u5b83\u8868\u793a\u786e\u8ba4\u53d1\u6765\u7684\u6570\u636e\u5df2\u7ecf\u63a5\u53d7\u65e0\u8bef\u3002 ]\uff09\u6d88\u606f\u54cd\u5e94\u3002\u8fd9\u6837\u5728\u5ba2\u6237\u673a\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u624d\u80fd\u5efa\u7acb\u8d77\u53ef\u9760\u7684TCP\u8fde\u63a5\uff0c\u6570\u636e\u624d\u53ef\u4ee5\u5728\u5ba2\u6237\u673a\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u4f20\u9012\u3002<\/p><\/blockquote><\/p>\n

<h3>2.4 \u4f20\u4e86 SYN,\u4e3a\u5565\u8fd8\u8981\u4f20 ACK<\/h3><\/p>\n

<p>\u53cc\u65b9\u901a\u4fe1\u65e0\u8bef\u5fc5\u987b\u662f\u4e24\u8005\u4e92\u76f8\u53d1\u9001\u4fe1\u606f\u90fd\u65e0\u8bef\u3002\u4f20\u4e86 SYN\uff0c\u8bc1\u660e\u53d1\u9001\u65b9\u5230\u63a5\u6536\u65b9\u7684\u901a\u9053\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u662f\u63a5\u6536\u65b9\u5230\u53d1\u9001\u65b9\u7684\u901a\u9053\u8fd8\u9700\u8981 ACK \u4fe1\u53f7\u6765\u8fdb\u884c\u9a8c\u8bc1\u3002<\/p>\n

<img alt=""TCP\u56db\u6b21\u6325\u624b"" src=""https:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/2019\/7\/TCP\u56db\u6b21\u6325\u624b.png"" style=""width: 100%;""><\/p>\n

\u65ad\u5f00\u4e00\u4e2a TCP \u8fde\u63a5\u5219\u9700\u8981\u201c\u56db\u6b21\u6325\u624b\u201d\uff1a<\/p>\n

<ul><li>\u5ba2\u6237\u7aef-\u53d1\u9001\u4e00\u4e2a FIN\uff0c\u7528\u6765\u5173\u95ed\u5ba2\u6237\u7aef\u5230\u670d\u52a1\u5668\u7684\u6570\u636e\u4f20\u9001<\/li><li>\u670d\u52a1\u5668-\u6536\u5230\u8fd9\u4e2a FIN\uff0c\u5b83\u53d1\u56de\u4e00 \u4e2a ACK\uff0c\u786e\u8ba4\u5e8f\u53f7\u4e3a\u6536\u5230\u7684\u5e8f\u53f7\u52a01 \u3002\u548c SYN \u4e00\u6837\uff0c\u4e00\u4e2a FIN \u5c06\u5360\u7528\u4e00\u4e2a\u5e8f\u53f7<\/li><li>\u670d\u52a1\u5668-\u5173\u95ed\u4e0e\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\uff0c\u53d1\u9001\u4e00\u4e2aFIN\u7ed9\u5ba2\u6237\u7aef<\/li><li>\u5ba2\u6237\u7aef-\u53d1\u56de ACK \u62a5\u6587\u786e\u8ba4\uff0c\u5e76\u5c06\u786e\u8ba4\u5e8f\u53f7\u8bbe\u7f6e\u4e3a\u6536\u5230\u5e8f\u53f7\u52a01<\/li><\/ul><\/p>\n

<h3>2.5 \u4e3a\u4ec0\u4e48\u8981\u56db\u6b21\u6325\u624b<\/h3><\/p>\n

\u4efb\u4f55\u4e00\u65b9\u90fd\u53ef\u4ee5\u5728\u6570\u636e\u4f20\u9001\u7ed3\u675f\u540e\u53d1\u51fa\u8fde\u63a5\u91ca\u653e\u7684\u901a\u77e5\uff0c\u5f85\u5bf9\u65b9\u786e\u8ba4\u540e\u8fdb\u5165\u534a\u5173\u95ed\u72b6\u6001\u3002\u5f53\u53e6\u4e00\u65b9\u4e5f\u6ca1\u6709\u6570\u636e\u518d\u53d1\u9001\u7684\u65f6\u5019\uff0c\u5219\u53d1\u51fa\u8fde\u63a5\u91ca\u653e\u901a\u77e5\uff0c\u5bf9\u65b9\u786e\u8ba4\u540e\u5c31\u5b8c\u5168\u5173\u95ed\u4e86TCP\u8fde\u63a5\u3002<\/p>\n

\u4e3e\u4e2a\u4f8b\u5b50\uff1aA \u548c B \u6253\u7535\u8bdd\uff0c\u901a\u8bdd\u5373\u5c06\u7ed3\u675f\u540e\uff0cA \u8bf4\u201c\u6211\u6ca1\u5565\u8981\u8bf4\u7684\u4e86\u201d\uff0cB\u56de\u7b54\u201c\u6211\u77e5\u9053\u4e86\u201d\uff0c\u4f46\u662f B \u53ef\u80fd\u8fd8\u4f1a\u6709\u8981\u8bf4\u7684\u8bdd\uff0cA \u4e0d\u80fd\u8981\u6c42 B \u8ddf\u7740\u81ea\u5df1\u7684\u8282\u594f\u7ed3\u675f\u901a\u8bdd\uff0c\u4e8e\u662f B \u53ef\u80fd\u53c8\u5df4\u62c9\u5df4\u62c9\u8bf4\u4e86\u4e00\u901a\uff0c\u6700\u540e B \u8bf4\u201c\u6211\u8bf4\u5b8c\u4e86\u201d\uff0cA \u56de\u7b54\u201c\u77e5\u9053\u4e86\u201d\uff0c\u8fd9\u6837\u901a\u8bdd\u624d\u7b97\u7ed3\u675f\u3002<\/p>\n

\u4e0a\u9762\u8bb2\u7684\u6bd4\u8f83\u6982\u62ec\uff0c\u63a8\u8350\u4e00\u7bc7\u8bb2\u7684\u6bd4\u8f83\u7ec6\u81f4\u7684\u6587\u7ae0\uff1a[https:\/\/blog.csdn.net\/qzcsu\/article\/details\/72861891<\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” \u4e3a\u4e86\u51c6\u786e\u65e0\u8bef\u5730\u628a\u6570\u636e\u9001\u8fbe\u76ee\u6807\u5904\uff0cTCP\u534f\u8bae\u91c7\u7528\u4e86\u4e09\u6b21\u63e1\u624b\u7b56\u7565\u3002 <h3& […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-46587","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/46587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=46587"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/46587\/revisions"}],"predecessor-version":[{"id":46588,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/46587\/revisions\/46588"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=46587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=46587"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=46587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}