{"id":1966,"date":"2026-06-06T15:35:07","date_gmt":"2026-06-06T07:35:07","guid":{"rendered":"https:\/\/www.52runoob.com\/?p=1966"},"modified":"2026-06-06T15:35:09","modified_gmt":"2026-06-06T07:35:09","slug":"linux-%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%ef%bc%9a%e4%bc%a0%e8%be%93%e5%b1%82-tcp%ef%bc%88%e4%b8%80%ef%bc%89-tcp-%e5%9f%ba%e7%a1%80%e4%b8%8e%e8%bf%9e%e6%8e%a5%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.52runoob.com\/index.php\/2026\/06\/06\/linux-%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%ef%bc%9a%e4%bc%a0%e8%be%93%e5%b1%82-tcp%ef%bc%88%e4%b8%80%ef%bc%89-tcp-%e5%9f%ba%e7%a1%80%e4%b8%8e%e8%bf%9e%e6%8e%a5%e7%ae%a1%e7%90%86\/","title":{"rendered":"Linux \u7f51\u7edc\u7f16\u7a0b\uff1a\u4f20\u8f93\u5c42 TCP\uff08\u4e00\uff09\u2014\u2014 TCP \u57fa\u7840\u4e0e\u8fde\u63a5\u7ba1\u7406"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Linux \u7f51\u7edc\u7f16\u7a0b\uff1a\u4f20\u8f93\u5c42 TCP\uff08\u4e00\uff09\u2014\u2014 TCP \u57fa\u7840\u4e0e\u8fde\u63a5\u7ba1\u7406<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Linux \u7f51\u7edc\u7f16\u7a0b\u4e2d\uff0c\u4f20\u8f93\u5c42\u534f\u8bae\u4e3b\u8981\u5305\u62ec <strong>TCP\uff08Transmission Control Protocol\uff09<\/strong> \u548c <strong>UDP\uff08User Datagram Protocol\uff09<\/strong>\u3002\u5176\u4e2d TCP \u662f\u4e92\u8054\u7f51\u6700\u5e38\u7528\u7684\u4f20\u8f93\u534f\u8bae\u4e4b\u4e00\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e Web\u3001\u6570\u636e\u5e93\u3001\u90ae\u4ef6\u3001\u6587\u4ef6\u4f20\u8f93\u7b49\u573a\u666f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u7bc7\u5c06\u8be6\u7ec6\u4ecb\u7ecd TCP \u7684\u57fa\u672c\u6982\u5ff5\u3001\u7279\u70b9\u3001\u62a5\u6587\u683c\u5f0f\u3001\u4e09\u6b21\u63e1\u624b\u4e0e\u56db\u6b21\u6325\u624b\uff0c\u4e3a\u540e\u7eed Socket \u7f16\u7a0b\u6253\u4e0b\u57fa\u7840\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e00\u3001\u4ec0\u4e48\u662f TCP\uff1f<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">TCP\uff08Transmission Control Protocol\uff0c\u4f20\u8f93\u63a7\u5236\u534f\u8bae\uff09\u662f\u4e00\u79cd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9762\u5411\u8fde\u63a5\uff08Connection-Oriented\uff09<\/li>\n\n\n\n<li>\u53ef\u9760\u4f20\u8f93\uff08Reliable\uff09<\/li>\n\n\n\n<li>\u5b57\u8282\u6d41\uff08Byte Stream\uff09<\/li>\n\n\n\n<li>\u5168\u53cc\u5de5\u901a\u4fe1\uff08Full Duplex\uff09<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7684\u4f20\u8f93\u5c42\u534f\u8bae\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f4d\u4e8e TCP\/IP \u534f\u8bae\u6808\u4e2d\u7684\u4f20\u8f93\u5c42\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5e94\u7528\u5c42\n  \u2193\nHTTP\u3001FTP\u3001SMTP\n  \u2193\nTCP\n  \u2193\nIP\n  \u2193\n\u6570\u636e\u94fe\u8def\u5c42\n  \u2193\n\u7269\u7406\u5c42\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e8c\u3001TCP \u7684\u7279\u70b9<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u9762\u5411\u8fde\u63a5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u4fe1\u53cc\u65b9\u5728\u4f20\u8f93\u6570\u636e\u524d\u5fc5\u987b\u5148\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7c7b\u4f3c\u4e8e\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6253\u7535\u8bdd\n\u2193\n\u62e8\u53f7\n\u2193\n\u63a5\u901a\n\u2193\n\u5f00\u59cb\u804a\u5929\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">TCP \u4e5f\u662f\u5982\u6b64\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5ba2\u6237\u7aef\n\u2193\n\u5efa\u7acb\u8fde\u63a5\n\u2193\n\u670d\u52a1\u7aef\n\u2193\n\u6570\u636e\u4f20\u8f93\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u53ef\u9760\u4f20\u8f93<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u4fdd\u8bc1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u4e0d\u4e22\u5931<\/li>\n\n\n\n<li>\u6570\u636e\u4e0d\u91cd\u590d<\/li>\n\n\n\n<li>\u6570\u636e\u6309\u987a\u5e8f\u5230\u8fbe<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9e\u73b0\u673a\u5236\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e8f\u5217\u53f7\uff08Sequence Number\uff09<\/li>\n\n\n\n<li>\u786e\u8ba4\u5e94\u7b54\uff08ACK\uff09<\/li>\n\n\n\n<li>\u8d85\u65f6\u91cd\u4f20<\/li>\n\n\n\n<li>\u6ed1\u52a8\u7a97\u53e3<\/li>\n\n\n\n<li>\u6d41\u91cf\u63a7\u5236<\/li>\n\n\n\n<li>\u62e5\u585e\u63a7\u5236<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u9762\u5411\u5b57\u8282\u6d41<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u4e0d\u5173\u5fc3\u6570\u636e\u8fb9\u754c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nsend(sock,&quot;Hello&quot;,5,0);\nsend(sock,&quot;World&quot;,5,0);\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u80fd\u6536\u5230\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nHelloWorld\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u4e5f\u53ef\u80fd\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nHel\nloWorld\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nTCP\u6ca1\u6709\u6d88\u606f\u8fb9\u754c\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5e94\u7528\u5c42\u9700\u8981\u81ea\u884c\u5904\u7406\u6570\u636e\u5305\u8fb9\u754c\u95ee\u9898\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u5168\u53cc\u5de5\u901a\u4fe1<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u7aef\u53ef\u540c\u65f6\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5ba2\u6237\u7aef \u2190\u2192 \u670d\u52a1\u7aef\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u65b9\u4e92\u4e0d\u5f71\u54cd\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e09\u3001TCP \u4e0e UDP \u5bf9\u6bd4<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u6027<\/th><th>TCP<\/th><th>UDP<\/th><\/tr><\/thead><tbody><tr><td>\u662f\u5426\u8fde\u63a5<\/td><td>\u662f<\/td><td>\u5426<\/td><\/tr><tr><td>\u662f\u5426\u53ef\u9760<\/td><td>\u662f<\/td><td>\u5426<\/td><\/tr><tr><td>\u662f\u5426\u6392\u5e8f<\/td><td>\u4fdd\u8bc1<\/td><td>\u4e0d\u4fdd\u8bc1<\/td><\/tr><tr><td>\u662f\u5426\u91cd\u4f20<\/td><td>\u652f\u6301<\/td><td>\u4e0d\u652f\u6301<\/td><\/tr><tr><td>\u4f20\u8f93\u901f\u5ea6<\/td><td>\u8f83\u6162<\/td><td>\u8f83\u5feb<\/td><\/tr><tr><td>\u5934\u90e8\u5927\u5c0f<\/td><td>20~60\u5b57\u8282<\/td><td>8\u5b57\u8282<\/td><\/tr><tr><td>\u5e94\u7528\u573a\u666f<\/td><td>Web\u3001\u6570\u636e\u5e93<\/td><td>\u89c6\u9891\u3001\u76f4\u64ad\u3001\u6e38\u620f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u56db\u3001TCP \u62a5\u6587\u6bb5\u7ed3\u6784<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u9996\u90e8\u6700\u5c0f\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n20\u5b57\u8282\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n 0                   15 16                  31\n+----------------------+----------------------+\n|     \u6e90\u7aef\u53e3           |     \u76ee\u6807\u7aef\u53e3         |\n+----------------------+----------------------+\n|            \u5e8f\u5217\u53f7 Sequence Number           |\n+---------------------------------------------+\n|            \u786e\u8ba4\u53f7 Acknowledgment Number      |\n+---------------------------------------------+\n|\u5934\u957f|\u4fdd\u7559|\u63a7\u5236\u4f4d|         \u7a97\u53e3\u5927\u5c0f           |\n+---------------------------------------------+\n|      \u6821\u9a8c\u548c          |      \u7d27\u6025\u6307\u9488         |\n+---------------------------------------------+\n|              \u9009\u9879 Option                    |\n+---------------------------------------------+\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e94\u3001\u91cd\u8981\u5b57\u6bb5\u8be6\u89e3<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u6e90\u7aef\u53e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d1\u9001\u65b9\u7aef\u53e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n52345\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u76ee\u6807\u7aef\u53e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a5\u6536\u65b9\u7aef\u53e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n80\n443\n3306\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u5e8f\u5217\u53f7\uff08SEQ\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u4e3a\u6bcf\u4e2a\u5b57\u8282\u7f16\u53f7\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nSeq = 1000\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8868\u793a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u4ece1000\u5f00\u59cb\u53d1\u9001\u6570\u636e\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u7528\u4e8e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6392\u5e8f<\/li>\n\n\n\n<li>\u4e22\u5305\u68c0\u6d4b<\/li>\n\n\n\n<li>\u91cd\u4f20\u63a7\u5236<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u786e\u8ba4\u53f7\uff08ACK\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8868\u793a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5df2\u7ecf\u6536\u5230\u7684\u6570\u636e\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nACK = 2000\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8bf4\u660e\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n1999\u4e4b\u524d\u7684\u6570\u636e\u90fd\u6536\u5230\u4e86\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u4e0b\u4e00\u6b21\u8bf7\u53d1\u9001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n2000\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u4e4b\u540e\u7684\u6570\u636e\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u516d\u3001TCP \u63a7\u5236\u4f4d\uff08Flags\uff09<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u6709\u516d\u4e2a\u6838\u5fc3\u6807\u5fd7\u4f4d\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6807\u5fd7\u4f4d<\/th><th>\u542b\u4e49<\/th><\/tr><\/thead><tbody><tr><td>SYN<\/td><td>\u5efa\u7acb\u8fde\u63a5<\/td><\/tr><tr><td>ACK<\/td><td>\u786e\u8ba4<\/td><\/tr><tr><td>FIN<\/td><td>\u5173\u95ed\u8fde\u63a5<\/td><\/tr><tr><td>RST<\/td><td>\u91cd\u7f6e\u8fde\u63a5<\/td><\/tr><tr><td>PSH<\/td><td>\u63a8\u9001\u6570\u636e<\/td><\/tr><tr><td>URG<\/td><td>\u7d27\u6025\u6570\u636e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e03\u3001\u4e09\u6b21\u63e1\u624b\uff08Three-Way Handshake\uff09<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u5efa\u7acb\u8fde\u63a5\u65f6\u9700\u8981\u4e09\u6b21\u63e1\u624b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u9700\u8981\u4e09\u6b21\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u76ee\u7684\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u786e\u8ba4\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5ba2\u6237\u7aef\u53d1\u9001\u80fd\u529b\n\u5ba2\u6237\u7aef\u63a5\u6536\u80fd\u529b\n\u670d\u52a1\u7aef\u53d1\u9001\u80fd\u529b\n\u670d\u52a1\u7aef\u63a5\u6536\u80fd\u529b\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5747\u6b63\u5e38\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e00\u6b21\u63e1\u624b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nSYN=1\nSeq=x\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u53d1\u9001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6211\u8981\u5efa\u7acb\u8fde\u63a5\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nSYN_SENT\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b21\u63e1\u624b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\u6536\u5230\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd4\u56de\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nSYN=1\nACK=1\nSeq=y\nAck=x+1\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8868\u793a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6536\u5230\u4f60\u7684\u8bf7\u6c42\n\u6211\u4e5f\u540c\u610f\u5efa\u7acb\u8fde\u63a5\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nSYN_RCVD\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e09\u6b21\u63e1\u624b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\u6536\u5230\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u6b21\u53d1\u9001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nACK=1\nAck=y+1\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8868\u793a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6536\u5230\u4f60\u7684\u786e\u8ba4\n\u8fde\u63a5\u5efa\u7acb\u6210\u529f\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nESTABLISHED\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\u6536\u5230\u540e\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nESTABLISHED\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u6b21\u63e1\u624b\u8fc7\u7a0b\u56fe<\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5ba2\u6237\u7aef                         \u670d\u52a1\u7aef\n\n   SYN=x\n  -----------&gt;\n                    \n\n          SYN=y ACK=x+1\n  &amp;lt;-----------\n\n   ACK=y+1\n  -----------&gt;\n\n\u8fde\u63a5\u5efa\u7acb\u6210\u529f\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u516b\u3001\u4e3a\u4ec0\u4e48\u4e0d\u662f\u4e24\u6b21\u63e1\u624b\uff1f<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\u53d1\u9001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nSYN\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e\u7f51\u7edc\u5ef6\u8fdf\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5f88\u4e45\u4ee5\u540e\u624d\u5230\u8fbe\u670d\u52a1\u7aef\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\u65e9\u5df2\u653e\u5f03\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4ec5\u4e24\u6b21\u63e1\u624b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\u4f1a\u8bef\u8ba4\u4e3a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5ba2\u6237\u7aef\u4ecd\u7136\u9700\u8981\u8fde\u63a5\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u800c\u5efa\u7acb\u65e0\u6548\u8fde\u63a5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e09\u6b21\u63e1\u624b\u7684\u4f5c\u7528\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u786e\u8ba4\u5ba2\u6237\u7aef\u786e\u5b9e\u6536\u5230\u670d\u52a1\u7aef\u54cd\u5e94\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u907f\u514d\u5386\u53f2\u8fde\u63a5\u8bf7\u6c42\u9020\u6210\u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e5d\u3001Linux \u67e5\u770b\u4e09\u6b21\u63e1\u624b<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u6293\u5305\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nsudo tcpdump -i eth0 tcp\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nsudo tcpdump -i any port 80\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5178\u578b\u8f93\u51fa\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nS\nS.\n.\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u542b\u4e49\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nS   -&gt; SYN\nS.  -&gt; SYN+ACK\n.   -&gt; ACK\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u3001\u56db\u6b21\u6325\u624b\uff08Four-Way Handshake\uff09<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u662f\u5168\u53cc\u5de5\u901a\u4fe1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u65b9\u90fd\u8981\u72ec\u7acb\u5173\u95ed\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u9700\u8981\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u56db\u6b21\u6325\u624b\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e00\u6b21\u6325\u624b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nFIN=1\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8868\u793a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6211\u6ca1\u6709\u6570\u636e\u53d1\u9001\u4e86\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nFIN_WAIT_1\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b21\u6325\u624b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nACK\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8868\u793a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6536\u5230\u5173\u95ed\u8bf7\u6c42\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nCLOSE_WAIT\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\u8fdb\u5165\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nFIN_WAIT_2\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u4e09\u6b21\u6325\u624b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\u5904\u7406\u5b8c\u5269\u4f59\u6570\u636e\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d1\u9001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nFIN\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8868\u793a\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6211\u4e5f\u5173\u95ed\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nLAST_ACK\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c\u56db\u6b21\u6325\u624b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nACK\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u56de\u590d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nTIME_WAIT\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nCLOSED\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u6b21\u6325\u624b\u8fc7\u7a0b\u56fe<\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u5ba2\u6237\u7aef                         \u670d\u52a1\u7aef\n\nFIN\n---------&gt;\n\n        ACK\n&amp;lt;---------\n\n        FIN\n&amp;lt;---------\n\nACK\n---------&gt;\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e00\u3001TIME_WAIT \u72b6\u6001<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f88\u591a\u5f00\u53d1\u8005\u4f1a\u53d1\u73b0\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nnetstat -ant\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u51fa\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nTIME_WAIT\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5927\u91cf\u5b58\u5728\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u9700\u8981 TIME_WAIT\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fdd\u8bc1\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\u6700\u540e\u4e00\u4e2a ACK\n\u80fd\u591f\u6210\u529f\u5230\u8fbe\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c ACK \u4e22\u5931\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\u4f1a\u91cd\u53d1\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nFIN\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\u8fd8\u80fd\u5904\u7406\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">TIME_WAIT \u65f6\u957f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Linux\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n2MSL\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u901a\u5e38\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n60\u79d2\u5de6\u53f3\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ncat \/proc\/sys\/net\/ipv4\/tcp_fin_timeout\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e8c\u3001TCP \u72b6\u6001\u8f6c\u6362\u56fe<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e38\u89c1\u72b6\u6001\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nLISTEN\n\u2193\nSYN_RCVD\n\u2193\nESTABLISHED\n\u2193\nFIN_WAIT_1\n\u2193\nFIN_WAIT_2\n\u2193\nTIME_WAIT\n\u2193\nCLOSED\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u670d\u52a1\u7aef\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nLISTEN\n\u2193\nSYN_RCVD\n\u2193\nESTABLISHED\n\u2193\nCLOSE_WAIT\n\u2193\nLAST_ACK\n\u2193\nCLOSED\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e09\u3001Linux \u67e5\u770b TCP \u72b6\u6001<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\u8fde\u63a5\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nss -ant\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nnetstat -ant\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u793a\u4f8b\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nLISTEN\nESTAB\nTIME_WAIT\nCLOSE_WAIT\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770b\u7edf\u8ba1\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nss -s\n\n<\/pre><\/div>\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u51fa\uff1a<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nTCP:\nestab 15\nclosed 230\ntimewait 40\n\n<\/pre><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u56db\u3001\u9762\u8bd5\u9ad8\u9891\u95ee\u9898<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">TCP \u4e3a\u4ec0\u4e48\u53ef\u9760\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b54\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e8f\u5217\u53f7<\/li>\n\n\n\n<li>ACK\u786e\u8ba4<\/li>\n\n\n\n<li>\u8d85\u65f6\u91cd\u4f20<\/li>\n\n\n\n<li>\u6ed1\u52a8\u7a97\u53e3<\/li>\n\n\n\n<li>\u6d41\u91cf\u63a7\u5236<\/li>\n\n\n\n<li>\u62e5\u585e\u63a7\u5236<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u662f\u4e09\u6b21\u63e1\u624b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u786e\u8ba4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53cc\u65b9\u53d1\u9001\u80fd\u529b\u6b63\u5e38<\/li>\n\n\n\n<li>\u53cc\u65b9\u63a5\u6536\u80fd\u529b\u6b63\u5e38<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e76\u9632\u6b62\u5386\u53f2\u8fde\u63a5\u8bf7\u6c42\u9020\u6210\u9519\u8bef\u8fde\u63a5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u662f\u56db\u6b21\u6325\u624b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u5168\u53cc\u5de5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u65b9\u5173\u95ed\u53d1\u9001\u901a\u9053\u9700\u8981\u5206\u522b\u901a\u77e5\uff0c\u56e0\u6b64\u9700\u8981\u56db\u6b21\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">TIME_WAIT \u4e3a\u4ec0\u4e48\u5b58\u5728\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4fdd\u8bc1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6700\u540e ACK \u53ef\u91cd\u53d1<\/li>\n\n\n\n<li>\u8001\u8fde\u63a5\u62a5\u6587\u5f7b\u5e95\u6d88\u5931<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u907f\u514d\u5f71\u54cd\u65b0\u7684\u8fde\u63a5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u603b\u7ed3<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">TCP \u662f Linux \u7f51\u7edc\u7f16\u7a0b\u4e2d\u6700\u91cd\u8981\u7684\u4f20\u8f93\u5c42\u534f\u8bae\u4e4b\u4e00\uff0c\u5176\u6838\u5fc3\u7279\u5f81\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9762\u5411\u8fde\u63a5<\/li>\n\n\n\n<li>\u53ef\u9760\u4f20\u8f93<\/li>\n\n\n\n<li>\u5b57\u8282\u6d41<\/li>\n\n\n\n<li>\u5168\u53cc\u5de5\u901a\u4fe1<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u70b9\u638c\u63e1\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>TCP \u62a5\u6587\u7ed3\u6784<\/li>\n\n\n\n<li>\u5e8f\u5217\u53f7\u4e0e\u786e\u8ba4\u53f7<\/li>\n\n\n\n<li>\u516d\u5927\u63a7\u5236\u4f4d<\/li>\n\n\n\n<li>\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5<\/li>\n\n\n\n<li>\u56db\u6b21\u6325\u624b\u65ad\u5f00\u8fde\u63a5<\/li>\n\n\n\n<li>TIME_WAIT \u72b6\u6001\u539f\u7406<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u7406\u89e3\u8fd9\u4e9b\u57fa\u7840\u77e5\u8bc6\u540e\uff0c\u5b66\u4e60 <code>socket()<\/code>\u3001<code>bind()<\/code>\u3001<code>listen()<\/code>\u3001<code>accept()<\/code>\u3001<code>connect()<\/code> \u7b49 Linux Socket API \u65f6\u4f1a\u66f4\u52a0\u5bb9\u6613\u3002\u4e0b\u4e00\u7bc7\u901a\u5e38\u4f1a\u6df1\u5165 TCP \u7684\u53ef\u9760\u4f20\u8f93\u673a\u5236\uff0c\u5305\u62ec\u6ed1\u52a8\u7a97\u53e3\u3001\u6d41\u91cf\u63a7\u5236\u3001\u62e5\u585e\u63a7\u5236\u548c\u91cd\u4f20\u673a\u5236\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u7f51\u7edc\u7f16\u7a0b\uff1a\u4f20\u8f93\u5c42 TCP\uff08\u4e00\uff09\u2014\u2014 TCP \u57fa\u7840\u4e0e\u8fde\u63a5\u7ba1\u7406 \u5728 Li&#8230; <a class=\"more-link\" href=\"https:\/\/www.52runoob.com\/index.php\/2026\/06\/06\/linux-%e7%bd%91%e7%bb%9c%e7%bc%96%e7%a8%8b%ef%bc%9a%e4%bc%a0%e8%be%93%e5%b1%82-tcp%ef%bc%88%e4%b8%80%ef%bc%89-tcp-%e5%9f%ba%e7%a1%80%e4%b8%8e%e8%bf%9e%e6%8e%a5%e7%ae%a1%e7%90%86\/\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-1966","post","type-post","status-publish","format-standard","hentry","category-linux"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/1966","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/comments?post=1966"}],"version-history":[{"count":1,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/1966\/revisions"}],"predecessor-version":[{"id":1967,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/posts\/1966\/revisions\/1967"}],"wp:attachment":[{"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/media?parent=1966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/categories?post=1966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52runoob.com\/index.php\/wp-json\/wp\/v2\/tags?post=1966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}