{"id":120,"date":"2026-08-26T10:35:11","date_gmt":"2026-08-26T02:35:11","guid":{"rendered":"https:\/\/www.xiaoxindong.cloud\/?p=120"},"modified":"2026-08-26T10:35:12","modified_gmt":"2026-08-26T02:35:12","slug":"tcp%e4%b8%89%e6%ac%a1%e6%8f%a1%e6%89%8b%ef%bc%8c%e5%9b%9b%e6%ac%a1%e6%8c%a5%e6%89%8b","status":"publish","type":"post","link":"https:\/\/www.xiaoxindong.cloud\/?p=120","title":{"rendered":"TCP\u4e09\u6b21\u63e1\u624b\uff0c\u56db\u6b21\u6325\u624b"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u628a TCP \u60f3\u6210\u4e24\u4e2a\u4eba\u6253\u7535\u8bdd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e09\u6b21\u63e1\u624b\uff1a\u5148\u786e\u8ba4\u201c\u80fd\u4e0d\u80fd\u901a\u8bdd\u201d<\/li>\n\n\n\n<li>\u56db\u6b21\u6325\u624b\uff1a\u518d\u786e\u8ba4\u201c\u80fd\u4e0d\u80fd\u5b89\u5168\u6302\u7535\u8bdd\u201d<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u6b21\u63e1\u624b\uff1a\u5efa\u7acb\u8fde\u63a5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A \u8981\u548c B \u901a\u8bdd\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>A \u2192 B\uff1a<code>SYN<\/code>\n<ul class=\"wp-block-list\">\n<li>\u201c\u4f60\u5728\u5417\uff1f\u6211\u60f3\u8fde\u63a5\u4f60\u3002\u201d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>B \u2192 A\uff1a<code>SYN + ACK<\/code>\n<ul class=\"wp-block-list\">\n<li>\u201c\u6211\u5728\uff0c\u6536\u5230\u4e86\u4f60\u7684\u8bf7\u6c42\uff1b\u6211\u4e5f\u51c6\u5907\u597d\u4e86\uff0c\u4f60\u80fd\u542c\u5230\u6211\u5417\uff1f\u201d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>A \u2192 B\uff1a<code>ACK<\/code>\n<ul class=\"wp-block-list\">\n<li>\u201c\u80fd\u542c\u5230\uff0c\u8fde\u63a5\u5efa\u7acb\u3002\u201d<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e4b\u6240\u4ee5\u4e0d\u662f\u4e24\u6b21\uff0c\u662f\u56e0\u4e3a\u4e24\u6b21\u53ea\u80fd\u8bc1\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A \u80fd\u53d1\u5230 B<\/li>\n\n\n\n<li>B \u80fd\u6536\u5230 A<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u8fd8\u4e0d\u80fd\u53ef\u9760\u8bc1\u660e B \u53d1\u56de\u53bb\u7684\u786e\u8ba4\uff0cA \u662f\u5426\u771f\u7684\u6536\u5230\u3002\u7b2c\u4e09\u6b21\u786e\u8ba4\u8865\u4e0a\u4e86\u8fd9\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53e3\u8bc0\uff1a<strong>\u8bf7\u6c42 \u2192 \u540c\u610f\u5e76\u53cd\u95ee \u2192 \u786e\u8ba4\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u56db\u6b21\u6325\u624b\uff1a\u5173\u95ed\u8fde\u63a5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u662f\u5168\u53cc\u5de5\u7684\uff1aA\u3001B \u4e24\u8fb9\u90fd\u53ef\u4ee5\u72ec\u7acb\u53d1\u9001\u6570\u636e\u3002\u6240\u4ee5\u201c\u6211\u4e0d\u53d1\u4e86\u201d\u4e0d\u7b49\u4e8e\u201c\u4f60\u4e5f\u4e0d\u53d1\u4e86\u201d\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>A \u2192 B\uff1a<code>FIN<\/code>\n<ul class=\"wp-block-list\">\n<li>\u201c\u6211\u8fd9\u8fb9\u6ca1\u6570\u636e\u8981\u53d1\u4e86\uff0c\u51c6\u5907\u5173\u95ed\u3002\u201d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>B \u2192 A\uff1a<code>ACK<\/code>\n<ul class=\"wp-block-list\">\n<li>\u201c\u6536\u5230\u3002\u4e0d\u8fc7\u6211\u53ef\u80fd\u8fd8\u6709\u6570\u636e\u6ca1\u53d1\u5b8c\u3002\u201d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>B \u2192 A\uff1a<code>FIN<\/code>\n<ul class=\"wp-block-list\">\n<li>\u201c\u73b0\u5728\u6211\u4e5f\u53d1\u5b8c\u4e86\uff0c\u53ef\u4ee5\u5173\u95ed\u3002\u201d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>A \u2192 B\uff1a<code>ACK<\/code>\n<ul class=\"wp-block-list\">\n<li>\u201c\u6536\u5230\uff0c\u6b63\u5f0f\u7ed3\u675f\u3002\u201d<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u53e3\u8bc0\uff1a<strong>\u6211\u4e0d\u53d1\u4e86 \u2192 \u6536\u5230 \u2192 \u6211\u4e5f\u4e0d\u53d1\u4e86 \u2192 \u6536\u5230\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u63e1\u624b\u4e09\u6b21\u3001\u6325\u624b\u56db\u6b21\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u63e1\u624b\u65f6\uff0cB \u7684\u201c\u786e\u8ba4\u6536\u5230\u201d\u4e0e\u201c\u6211\u4e5f\u8981\u5efa\u7acb\u8fde\u63a5\u201d\u901a\u5e38\u53ef\u4ee5\u5408\u5728\u4e00\u6761 <code>SYN + ACK<\/code> \u91cc\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6325\u624b\u65f6\uff0cB \u6536\u5230 A \u7684 <code>FIN<\/code> \u540e\uff0c\u53ef\u80fd\u8fd8\u6709\u5269\u4f59\u6570\u636e\uff0c\u56e0\u6b64\u53ea\u80fd\u5148\u56de <code>ACK<\/code>\uff1b\u7b49\u5b83\u53d1\u5b8c\u6570\u636e\uff0c\u624d\u80fd\u53e6\u53d1 <code>FIN<\/code>\u3002\u4e8e\u662f\u901a\u5e38\u662f\u56db\u6b21\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8865\u5145\u4e00\u4e2a\u5e38\u89c1\u70b9\uff1a\u4e3b\u52a8\u5173\u95ed\u7684\u4e00\u65b9\u6700\u540e\u4f1a\u7b49\u4e00\u5c0f\u6bb5\u65f6\u95f4\uff08<code>TIME_WAIT<\/code>\uff09\uff0c\u907f\u514d\u6700\u540e\u7684\u786e\u8ba4\u5305\u4e22\u5931\uff0c\u5e76\u8ba9\u7f51\u7edc\u4e2d\u5ef6\u8fdf\u7684\u65e7\u62a5\u6587\u81ea\u7136\u6d88\u5931\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53ef\u4ee5\u628a TCP \u60f3\u6210\u4e24\u4e2a\u4eba\u6253\u7535\u8bdd\uff1a \u4e09\u6b21\u63e1\u624b\uff1a\u5efa\u7acb\u8fde\u63a5 A \u8981\u548c B \u901a\u8bdd\u3002 \u4e4b\u6240\u4ee5\u4e0d\u662f\u4e24\u6b21\uff0c\u662f\u56e0\u4e3a\u4e24\u6b21\u53ea\u80fd\u8bc1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-120","post","type-post","status-publish","format-standard","hentry","category-5"],"_links":{"self":[{"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=\/wp\/v2\/posts\/120","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=120"}],"version-history":[{"count":1,"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=\/wp\/v2\/posts\/120\/revisions"}],"predecessor-version":[{"id":121,"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=\/wp\/v2\/posts\/120\/revisions\/121"}],"wp:attachment":[{"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaoxindong.cloud\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}