{"id":273,"date":"2020-05-30T15:36:56","date_gmt":"2020-05-30T07:36:56","guid":{"rendered":"http:\/\/summid.icu\/?p=273"},"modified":"2023-06-01T15:17:52","modified_gmt":"2023-06-01T07:17:52","slug":"computernetworkreview","status":"publish","type":"post","link":"https:\/\/summid.icu\/index.php\/2020\/05\/30\/computernetworkreview\/","title":{"rendered":"\u8ba1\u7b97\u673a\u7f51\u7edc\u590d\u4e60"},"content":{"rendered":"<p><!--more--><\/p>\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u94fe\u8def\u5c42<\/span><\/h1>\n<h2><span style=\"font-size: 18pt; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000;\">\u4ee5\u592a\u7f51\u5e27\u683c\u5f0f<\/span><\/h2>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/Ethernet-frame.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"234\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/Ethernet-frame.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-275\"  sizes=\"auto, (max-width: 567px) 100vw, 567px\" \/><\/div><\/figure>\n\n\n<ul>\n<li>\u5176\u4e2d\u7684\u76ee\u7684\u5730\u5740\u548c\u6e90\u5730\u5740\u662f\u6307\u7f51\u5361\u7684\u786c\u4ef6\u5730\u5740\uff08MAC\u5730\u5740\uff09\uff0c\u957f\u5ea648\u4f4d\uff0c\u662f\u5728\u7f51\u5361\u51fa\u573a\u65f6\u56fa\u5316\u7684\u3002<\/li>\n<li>\u7f51\u5361\u82af\u7247\u6536\u5230\u7684\u6570\u636e\u5c31\u662f\u5982\u4e0a\u6240\u793a\u7684\u4e00\u957f\u4e32\u6570\u636e\uff1b\u5176\u4e2d\u5305\u62ec\u4ee5\u592a\u7f51\u5e27\u5934\uff0cIP\u62a5\u62a5\u5934\uff0c\u4f20\u8f93\u5c42\u534f\u8bae\u6bb5\u6bb5\u5934\u548c\u5e94\u7528\u5c42\u6240\u9700\u6570\u636e\u3002<\/li>\n<li>\u4ee5\u592a\u7f51\u5e27\u7684\u201c\u6570\u636e\u957f\u5ea6\u201d\u89c4\u5b9a\u6700\u5c0f46\u5b57\u8282\uff0c\u6700\u59271500\u5b57\u8282\uff0cARP\u548cRARP\u6570\u636e\u5305\u7684\u957f\u5ea6\u4e0d\u8db346\u5b57\u8282\u8981\u5728\u540e\u9762\u586b\u5145\u3002\u6700\u59271500\u5b57\u8282\u4e5f\u88ab\u79f0\u4e3a\u4ee5\u592a\u7f51\u7684\u6700\u5927\u4f20\u8f93\u5355\u5143\uff08MTU\uff09\uff0c\u4e0d\u540c\u7684\u7f51\u7edc\u7c7b\u578b\u6709\u4e0d\u540c\u7684MTU\u3002<\/li>\n<li>\u4ee5\u592a\u7f51\u5e27\u6700\u540e\u67094\u5b57\u8282\u7684\u5e27\u68c0\u9a8c\u5e8f\u5217\u7801\uff0c\u53d1\u9001\u65b9\u8ba1\u7b97\u5e27\u7684\u5faa\u73af\u5197\u4f59\u6821\u9a8c\uff08CRC\uff09\u503c\uff0c\u628a\u5b83\u5199\u8fdb\u5e27\u91cc\uff0c\u63a5\u6536\u65b9\u91cd\u65b0\u8ba1\u7b97CRC\uff0c\u4e0e\u5e27\u68c0\u9a8c\u5e8f\u5217\u7801\u6bd4\u8f83\uff0c\u5982\u679c\u4e24\u4e2a\u503c\u4e0d\u540c\uff0c\u8bf4\u660e\u6570\u636e\u9519\u8bef\uff0c\u9700\u8981\u91cd\u65b0\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000;\">ARP\u5730\u5740\u89e3\u6790\u534f\u8bae\uff08\u901a\u5e38\u88ab\u5212\u5206\u5728\u7f51\u7edc\u5c42\uff09<\/span><\/h2>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u901a\u8fc7IP\u5730\u5740\u6765\u67e5\u627eMAC\u5730\u5740<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/ARP-frame-1024x250.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"250\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/ARP-frame-1024x250.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-279\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5de5\u4f5c\u6d41\u7a0b\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u672c\u5730\u4e3b\u673a\u5728\u5c40\u57df\u7f51\u4e2d\u5e7f\u64adARP\u8bf7\u6c42\uff0cARP\u8bf7\u6c42\u6570\u636e\u5e27\u4e2d\u5305\u542b\u76ee\u7684\u4e3b\u673a\u7684IP\u5730\u5740\u3002\u610f\u601d\u662f\uff1a\u5982\u679c\u4f60\u662fIP\u5730\u5740\u7684\u62e5\u6709\u8005\uff0c\u8bf7\u5e94\u7b54\u4f60\u7684MAC\u5730\u5740\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u76ee\u7684\u4e3b\u673a\u7684ARP\u5c42\u89e3\u6790\u8fd9\u4efd\u5e7f\u64ad\u62a5\u6587\uff0c\u8bc6\u522b\u51fa\u662f\u8be2\u95ee\u5176MAC\u5730\u5740\u3002\u4e8e\u662f\u53d1\u9001ARP\u5e94\u7b54\u5e27\uff0c\u91cc\u9762\u5305\u542b\u81ea\u5df1\u7684IP\u5730\u5740\u548cMAC\u5730\u5740\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u672c\u5730\u4e3b\u673a\u6536\u5230ARP\u5e94\u7b54\u5e27\u540e\uff0c\u77e5\u9053\u4e86\u76ee\u7684\u5730\u5740\u7684\u786c\u4ef6\u5730\u5740\uff0c\u4e4b\u540e\u7684\u6570\u636e\u62a5\u5c31\u53ef\u4ee5\u4f20\u9001\u4e86\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>RARP\u9006\u5730\u5740\u89e3\u6790\u534f\u8bae\uff1a<\/strong>\u77e5\u9053\u7269\u7406\u5730\u5740\u6765\u67e5\u627eIP\u5730\u5740\u3002<br \/>\u5e94\u7528\uff1a\u5c40\u57df\u7f51\u4e2d\u6709\u4e00\u53f0\u4e3b\u673a\u53ea\u77e5\u9053\u7269\u7406\u5730\u5740\u800c\u4e0d\u77e5\u9053IP\u5730\u5740\uff0c\u90a3\u4e48\u53ef\u4ee5\u901a\u8fc7RARP\u534f\u8bae\u53d1\u51fa\u5f81\u6c42\u81ea\u8eabIP\u5730\u5740\u7684\u5e7f\u64ad\u8bf7\u6c42\uff0c\u7136\u540e\u7531RARP\u670d\u52a1\u5668\u8d1f\u8d23\u56de\u7b54\u3002\u65e0\u76d8\u5de5\u4f5c\u7ad9\u5f15\u5bfc\u65f6\u83b7\u53d6IP\u5730\u5740\u3002<br \/>RARP\u5e27\u4e0eARP\u5e27\u901a\u8fc72\u5b57\u8282\u7684\u5e27\u7c7b\u578b\u5b57\u6bb5\u6765\u533a\u522b\u3002<br \/><\/span><\/p>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ARP\u7f13\u5b58<\/span><\/strong><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ARP\u7f13\u5b58\u672c\u8d28\u4e0a\u662f\u4e00\u4e2aIP\u5730\u5740\u2192MAC\u5730\u5740\u7684\u5bf9\u5e94\u8868\uff0c\u8868\u4e2d\u6bcf\u4e00\u4e2a\u6761\u76ee\u8bb0\u5f55\u4e86\u7f51\u7edc\u4e0a\u5176\u4ed6\u4e3b\u673a\u7684IP\u5730\u5740\u548c\u5bf9\u5e94\u7684MAC\u5730\u5740\u3002\u5f53ARP\u88ab\u8be2\u95ee\u4e00\u4e2a\u5df2\u77e5IP\u5730\u5740\u8282\u70b9\u7684MAC\u5730\u5740\u65f6\uff0c\u5148\u5728ARP\u7f13\u5b58\u4e2d\u67e5\u770b\uff0c\u82e5\u5b58\u5728\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u4e0e\u4e4b\u5bf9\u5e94\u7684MAC\u5730\u5740\uff0c\u82e5\u4e0d\u5b58\u5728\uff0c\u624d\u53d1\u9001ARP\u8bf7\u6c42\u5e7f\u64ad\u3002\u8868\u4e2d\u6bcf\u4e00\u9879\u90fd\u6709TTL\uff08\u751f\u5b58\u65f6\u95f4\uff09\u503c\uff0c\u65f6\u95f4\u5230\u4e86\u8be5\u503c\u540e\uff0c\u8be5\u9879\u88ab\u5220\u9664\uff1b\u5728\u8868\u4e2d\u67e5\u627e\u5230\u67d0\u4e00\u9879\u65f6\uff0c\u5237\u65b0\u8be5\u9879\u7684TTL\u3002ARP\u7f13\u5b58\u65f6\u628a\u53cc\u5203\u5251\uff0c\u867d\u7136\u589e\u52a0\u4e86\u6548\u7387\uff0c\u4f46\u4f1a\u5bfc\u81f4\u5bb9\u6613\u88ab\u7be1\u6539\u653b\u51fb\u3002<\/span><\/p>\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 24pt;\">\u7f51\u7edc\u5c42<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u94fe\u8def\u5c42\u7684\u4efb\u52a1\u662f\u4e24\u8282\u70b9\u95f4\u53ef\u9760\u7684\u6570\u636e\u4f20\u8f93\uff0c\u800c\u7f51\u7edc\u5c42\u7684\u4efb\u52a1\u662f\u4e24\u7aef\u70b9\u95f4\u7684\u6700\u4f73\u8def\u7531\u4f20\u8f93\u6570\u636e\uff08\u4e3b\u673a\u95f4\u7684\u903b\u8f91\u901a\u4fe1\uff09\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6839\u636e\u7aef\u5230\u7aef\u7684\u8bbe\u8ba1\u539f\u5219\uff0cIP\u53ea\u4e3a\u4e3b\u673a\u63d0\u4f9b\u4e00\u79cd\u65e0\u8fde\u63a5\u3001\u4e0d\u53ef\u9760\u3001\u5c3d\u529b\u800c\u4e3a\u7684\u6570\u636e\u62a5\u4f20\u8f93\u670d\u52a1\u3002<\/span><\/p>\n<h2><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 18pt;\">IP\u62a5\u6587\u683c\u5f0f\uff08IPv4\uff09<\/span><\/h2>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/IP-message-format-1024x665.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"665\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/IP-message-format-1024x665.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-283\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9996\u90e8\u7684\u56fa\u5b9a\u90e8\u5206\u4e3a20\u5b57\u8282\uff0c\u52a0\u4e0a\u53ef\u9009\u5b57\u6bb5\uff0c\u9996\u90e8\u6700\u957f\u53ef\u4ee5\u670960\u5b57\u8282\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e0b\u9762\u5206\u522b\u4ecb\u7ecd\u56fa\u5b9a\u90e8\u5206\u7684\u5b57\u6bb5\u542b\u4e49\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">4\u4f4d\u7248\u672c\u534f\u8bae\uff08version\uff09\uff1a\u901a\u4fe1\u53cc\u65b9\u7684IP\u534f\u8bae\u5fc5\u987b\u8981\u8fbe\u5230\u4e00\u81f4\uff0cIPv4\u7684\u7248\u672c\u5c31\u662f4\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">4\u4f4d\u9996\u90e8\u957f\u5ea6\uff08header length\uff09\uff1a\u5b9a\u4e49\u4e86IP\u534f\u8bae\u9996\u90e8\uff08\u62a5\u5934\uff09\u7684\u957f\u5ea6\uff0c\u4ee54\u4e2a\u5b57\u8282\u4e3a\u5355\u4f4d\uff0c\u9996\u90e8\u957f\u5ea6\u8303\u56f4[5\uff0c15]\uff0c\u5373[20\u5b57\u8282\uff0c60\u5b57\u8282]\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">8\u4f4d\u670d\u52a1\u7c7b\u578b\uff08Type Of Service\uff0cTOS\uff09\uff1a3 \u4f4d\u4f18\u5148\u6743\u5b57\u6bb5(\u5df2\u7ecf\u5f03\u7528), 4\u4f4dTOS\u5b57\u6bb5, \u548c\u4e00\u4f4d\u4fdd\u7559\u5b57\u6bb5(\u6b64\u4f4d\u5fc5\u987b\u7f6e0), 4\u4f4dTOS\u5206\u522b\u8868\u793a : \u6700\u5c0f\u5ef6\u8fdf, \u6700\u5927\u541e\u5410\u91cf, \u6700\u9ad8\u53ef\u9760\u6027, \u6700\u5c0f\u6210\u672c\u3002\u8fd9\u56db\u8005\u76f8\u4e92\u51b2\u7a81, \u53ea\u80fd\u6709\u4e00\u4e2a\u7f6e1\u3002\u5bf9\u4e8essh\/telnet\u8fd9\u6837\u7684\u5e94\u7528\u7a0b\u5e8f, \u6700\u5c0f\u5ef6\u65f6\u6bd4\u8f83\u91cd\u8981, \u5bf9\u4e8eftp(\u6587\u4ef6\u4f20\u8f93\u534f\u8bae)\u7c7b\u578b\u7684\u7a0b\u5e8f, \u6700\u5927\u541e\u5410\u91cf\u6bd4\u8f83\u91cd\u8981\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">16\u4f4d\uff08\u5206\u7247\uff09\u6807\u8bc6\uff1a\u5728\u8fdb\u884c\u6570\u636e\u5206\u7247\u91cd\u7ec4\u7684\u65f6\u5019\u8868\u793a\u6570\u636e\u5206\u7247\u5c5e\u4e8e\u90a3\u4e2a\u5b8c\u6574\u7684UDP\u62a5\u6587, \u5177\u4f53\u6765\u8bf4, IP\u5728\u5b58\u50a8\u5668\u4e2d\u7ef4\u6301\u4e00\u4e2a\u8ba1\u6570\u5668, \u6bcf\u4ea7\u751f\u4e00\u4e2a\u6570\u636e\u62a5, \u8ba1\u6570\u5668\u5c31\u52a01, \u5e76\u5c06\u6b64\u503c\u8d4b\u7ed9\u6807\u8bc6\u5b57\u6bb5\u3002\u4f46\u8fd9\u4e2a\u6807\u8bc6\u5e76\u4e0d\u662f\u5e73\u5e38\u7684\u5e8f\u53f7\uff0c\u56e0\u4e3aIP\u662f\u65e0\u8fde\u63a5\uff0c\u4e0d\u53ef\u9760\u670d\u52a1, \u6570\u636e\u62a5\u4e0d\u5b58\u5728\u6309\u5e8f\u63a5\u6536\u7684\u95ee\u9898\u3002\u5f53\u6570\u636e\u62a5\u7531\u4e8e\u957f\u5ea6\u8d85\u8fc7\u94fe\u8def\u5c42\u7684MTU\u800c\u5fc5\u987b\u5206\u7247\u65f6, \u8fd9\u4e2a\u6807\u8bc6\u5b57\u6bb5\u7684\u503c\u5c31\u88ab\u590d\u5236\u5230\u6240\u6709\u7684\u6570\u636e\u62a5\u7247\u7684\u6807\u8bc6\u5b57\u6bb5\u4e2d, \u7b49\u5230\u5bf9\u7aef\u91cd\u7ec4\u7684\u65f6\u5019, \u76f8\u540c\u6807\u8bc6\u7b26\u7684\u503c\u7684\u6570\u636e\u62a5\u5c31\u4f1a\u88ab\u91cd\u65b0\u7ec4\u88c5\u6210\u4e00\u4e2a\u6570\u636e\u62a5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">3\u4f4d\uff08\u5206\u7247\uff09\u6807\u5fd7\uff1a\u9ad8\u4f4d\u672a\u7528\uff0c\u4e2d\u95f4\u4f4dDF\u7f6e1\uff0c\u8868\u793a\u4e0d\u80fd\u8fdb\u884c\u5206\u7247\uff0c\u7f6e0\u624d\u53ef\u4ee5\u8fdb\u884c\u5206\u7247\u64cd\u4f5c\u3002\u6700\u4f4e\u4e3aMF\uff0c\u7f6e1\u8868\u793a\u540e\u9762\u8fd8\u6709\u6570\u636e\u5206\u7247\uff0c\u7f6e0\u8868\u793a\u8fd9\u5df2\u7ecf\u662f\u6700\u540e\u4e00\u4e2a\u6570\u636e\u5206\u7247\u4e86\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">13\u4f4d\u7247\u504f\u79fb\uff1a\u6807\u8bc6\u4e00\u4e2a\u5206\u7247\u5728\u539f\u59cbUDP\u62a5\u6587\u4e2d\u7684\u4f4d\u7f6e\uff0c\u4ee58\u5b57\u8282\u4e3a\u5355\u4f4d\uff0c\u4f8b\u5982\u5c06\u4e00\u4e2a1001\u5b57\u8282\u7684UDP\u62a5\u6587\u6309256\u5b57\u8282\u5206\u7247\u540e\uff0c\u7b2c\u4e00\u7247\u7684\u6570\u636e\u62a5\u7684\u7247\u504f\u79fb\u5c31\u662f0\uff0c\u7b2c\u4e8c\u7247\u6570\u636e\u62a5\u7684\u7247\u504f\u79fb\u5c31\u662f256\/8=32\uff0c\u7b2c\u4e09\u7247\u5c31\u662f512\/8=64\uff0c\u7b2c\u56db\u7247\u5c31\u662f768\/8=96\uff0c\u7b2c\u56db\u7247\u5e76\u6ca1\u6709256\u4e2a\u5b57\u8282\uff0c\u5982\u679c\u5206\u7247\u524d\u7684\u6570\u636e\u4e0d\u80fd\u88ab8\u6574\u9664\uff0c\u90a3\u5206\u7247\u540e\u7684\u6700\u540e\u4e00\u4e2a\u6570\u636e\u5927\u5c0f\u5c31\u662f\u5206\u7247\u524d\u6570\u636e\u62a5\u5927\u5c0f\u9664\u4ee58\u7684\u4f59\u6570\u3002\u6240\u4ee5\u4e0d\u7ba1\u5206\u7247\u524d\u7684\u5927\u5c0f\u80fd\u4e0d\u80fd\u88ab8\u6574\u9664\uff0c\u7247\u504f\u79fb\u6c38\u8fdc\u662f8\u7684\u6574\u6570\u500d\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">8\u4f4dTTL\uff1a\u62a5\u6587\u5728\u7f51\u7edc\u4e2d\u7684\u751f\u5b58\u5468\u671f\uff0c\u5373\u8df3\u6570\uff0c\u6307\u7684\u662f\u80fd\u591f\u7ecf\u8fc7\u591a\u5c11\u8def\u7531\u5668\uff0c\u6bcf\u7ecf\u8fc7\u4e00\u4e2a\u8def\u7531\u5668\u5c31\u6210\u4e3a1\u8df3\uff0c\u8be5\u503c\u5c31\u51cf1\uff0c\u4e3a0\u65f6\u5c31\u88ab\u4e22\u5f03\uff0c\u6700\u5927\u503c\u4e3a2^8-1=255\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">8\u4f4d\u534f\u8bae\uff1a\u6807\u65f6\u4f20\u8f93\u5c42\u4f7f\u7528\u7684\u65f6\u4ec0\u4e48\u534f\u8bae\uff0c\u7528\u4e8e\u6570\u636e\u5206\u7528\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">16\u4f4d\u6821\u9a8c\u548c\uff1a\u4e8c\u8fdb\u5236\u53cd\u7801\u6c42\u548c\uff0c\u7528\u4e8e\u6821\u9a8c\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">32\u4f4d\u6e90\u5730\u5740\/32\u4f4d\u76ee\u7684\u5730\u5740\uff1a\u7528\u4e8e\u6807\u8bc6\u6e90\u7aef\/\u5bf9\u7aef\u4e3b\u673a\uff0c\u8def\u7531\u5668\u5c31\u662f\u6839\u636e\u5bf9\u7aef\u4e3b\u673aIP\u5730\u5740\u8fdb\u884c\u8def\u5f84\u9009\u62e9\u7684\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u53ef\u9009\u5b57\u6bb5\uff08\u4e0d\u5b9a\u957f\uff0c\u6700\u591a40\u5b57\u8282\uff09\uff1a\u57fa\u672c\u5f88\u5c11\u7528\u5230\u3002<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt; color: #000000; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">IP\u5206\u7247<\/span><\/h2>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7531\u4e8e\u8def\u7531\u5668\u8f6c\u53d1\u6570\u636e\u62a5\u65f6\u4e0d\u540c\u7684\u94fe\u8def\u80fd\u591f\u5bb9\u7eb3\u7684\u6570\u636e\u62a5\u7684\u5927\u5c0f\u4e0d\u540c\uff0c\u6240\u4ee5\u5f53\u6570\u636e\u62a5\u4ece\u5927\u7684\u94fe\u8def\u901a\u8fc7\u8def\u7531\u5668\u8f6c\u53d1\u5230\u5c0f\u7684\u94fe\u8def\u4e0a\u65f6\uff0c\u9700\u8981\u8fdb\u884cIP\u5206\u7247\uff0c\u5230\u6700\u540e\u7684\u94fe\u8def\u4e0a\u518d\u7ec4\u5408\u597d\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/IP\u5206\u7247\u4f8b\u9898-1024x581.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"581\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/IP\u5206\u7247\u4f8b\u9898-1024x581.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-286\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6570\u636e\u62a5\u5927\u4e8eMTU\uff0c\u9700\u8981\u5206\u6bb5\uff0c4000B\/1480B\u5411\u4e0a\u53d6\u6574\u7b49\u4e8e3\uff0c\u56e0\u6b64\u9700\u8981\u52063\u7247\u3002<br>\u9664\u4e86\u6700\u540e\u4e00\u7247\uff0c\u524d\u9762\u7684\u5206\u7247\u90fd\u4e3aMTU\u5141\u8bb8\u7684\u6700\u5927\u5206\u7247\u3002<br>\u7b2c\u4e00\u72471480B\u52a0\u4e0a\u9996\u90e820B\u7b49\u4e8e1500B\uff0c\u7247\u504f\u79fb0\u3002<br>\u7b2c\u4e8c\u72471480B\u52a0\u4e0a\u9996\u90e820B\u7b49\u4e8e1500B\uff0c\u7247\u504f\u79fb1480\/8=185\u3002<br>\u7b2c\u4e09\u7247\u8fd8\u5269\u4f591040B\uff0c\u52a0\u4e0a\u9996\u90e820B\u7b49\u4e8e1060B\uff0c\u7247\u504f\u79fb\uff081480+1480\uff09\/8=370\u3002\u8bbe\u7f6eMF=0\uff0c\u6ca1\u6709\u66f4\u591a\u5206\u7247\u3002<br><\/span><\/p>\n<h2><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 18pt; color: #000000;\">IP\u9009\u8def<\/span><\/h2>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">IP\u9009\u8def\uff0c\u5373IP\u5bfb\u8def\uff0c\u5c31\u662f\u6839\u636e\u8def\u7531\u8868\u4e2d\u7684\u8bb0\u5f55\uff0c\u6765\u51b3\u5b9a\u5f53\u524d\u6570\u636e\u62a5\u662f\u76f4\u63a5\u4ea4\u4ed8\uff08\u76ee\u7684\u5730\u5740\u5c5e\u4e8e\u5f53\u524d\u5c40\u57df\u7f51\uff09\u8fd8\u662f\u53d1\u5f80\u4e0b\u4e00\u8df3\u8def\u7531\uff08\u96b6\u5c5e\u4e8e\u4e0d\u540c\u7684\u5c40\u57df\u7f51\uff09\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9009\u8def\u539f\u5219\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u641c\u7d22\u5339\u914d\u7684\u4e3b\u673a\u5730\u5740\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u641c\u7d22\u5339\u914d\u7684\u7f51\u7edc\u5730\u5740\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u641c\u7d22\u9ed8\u8ba4\u8868\u9879\uff08\u4e00\u822c\u662f0.0.0.0\uff09<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5339\u914d\u4e3b\u673a\u5730\u5740\u6b65\u9aa4\u59cb\u7ec8\u53d1\u751f\u5728\u5339\u914d\u7f51\u7edc\u5730\u5740\u6b65\u9aa4\u4e4b\u524d\u3002\u641c\u7d22\u7f51\u7edc\u5730\u5740\u65f6\uff0c\u4f1a\u5c06IP\u5730\u5740\u4e0e\u5b50\u7f51\u63a9\u7801\u76f8\u4e0e\u8fd0\u7b97\uff0c\u770b\u7ed3\u679c\u4e0e\u7f51\u7edc\u5730\u5740\u662f\u5426\u76f8\u540c\u3002<\/span><\/p>\n<h2><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 18pt; color: #000000;\">ICMP\u534f\u8bae<\/span><\/h2>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e00\u4e2a\u65b0\u642d\u5efa\u597d\u7684\u7f51\u7edc\uff0c\u5f80\u5f80\u9700\u8981\u5148\u8fdb\u884c\u4e00\u4e2a\u7b80\u5355\u7684\u6d4b\u8bd5\uff0c\u6765\u9a8c\u8bc1\u7f51\u7edc\u662f\u5426\u901a\u7545\uff0c\u4f46\u662fIP\u534f\u8bae\u5e76\u4e0d\u63d0\u4f9b\u53ef\u9760\u4f20\u8f93\u3002\u5982\u679c\u4e22\u5305\u4e86\uff0cIP\u534f\u8bae\u5e76\u4e0d\u80fd\u901a\u77e5\u4f20\u8f93\u5c42\u662f\u5426\u4e22\u5305\u4ee5\u53ca\u4e22\u5305\u7684\u539f\u56e0\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6240\u4ee5\u6211\u4eec\u5c31\u9700\u8981\u4e00\u79cd\u534f\u8bae\u6765\u5b8c\u6210\u8fd9\u6837\u7684\u529f\u80fd\u2014\u2014ICMP\u534f\u8bae\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ICMP\u534f\u8bae\u7684\u529f\u80fd\u4e3b\u8981\u6709\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u786e\u8ba4IP\u5305\u662f\u5426\u6210\u529f\u5230\u8fbe\u76ee\u6807\u5730\u5740<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u901a\u77e5\u5728\u53d1\u9001\u8fc7\u7a0b\u4e2dIP\u5305\u88ab\u4e22\u5f03\u7684\u539f\u56e0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6ce8\u610f\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ICMP\u662f\u57fa\u4e8eIP\u534f\u8bae\u5de5\u4f5c\u7684\uff0c\u4f46\u662f\u5b83\u5e76\u4e0d\u662f\u4f20\u8f93\u5c42\u7684\u529f\u80fd\uff0c\u56e0\u6b64\u4ecd\u7136\u628a\u5b83\u5f52\u7ed3\u4e3a\u7f51\u7edc\u5c42\u534f\u8bae\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ICMP\u53ea\u80fd\u642d\u914dIPv4\u4f7f\u7528\uff0c\u5982\u679c\u662fIPv6\u7684\u60c5\u51b5\uff0c\u9700\u8981\u4f7f\u7528ICMPv6<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ICMP\u7684\u62a5\u6587\u683c\u5f0f<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/ICMP-message.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"583\" height=\"166\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/ICMP-message.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-289\"  sizes=\"auto, (max-width: 583px) 100vw, 583px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ICMP\u62a5\u6587\u5305\u542b\u5728IP\u6570\u636e\u62a5\u4e2d\uff0cIP\u62a5\u5934\u5728ICMP\u62a5\u6587\u7684\u6700\u524d\u9762\u3002\u4e00\u4e2aICMP\u62a5\u6587\u5305\u62ecIP\u62a5\u5934\uff08\u81f3\u5c1120\u5b57\u8282\uff09\u3001ICMP\u62a5\u5934\uff08\u81f3\u5c118\u5b57\u8282\uff09\u548cICMP\u62a5\u6587\uff08\u5c5e\u4e8eICMP\u62a5\u6587\u7684\u6570\u636e\u90e8\u5206\uff09\u3002\u5f53IP\u62a5\u5934\u4e2d\u7684\u534f\u8bae\u5b57\u6bb5\u4e3a1\u65f6\uff0c\u5c31\u8bf4\u660e\u8fd9\u662f\u4e00\u4e2aICMP\u62a5\u6587\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5b57\u6bb5\u8bf4\u660e\uff1a<\/span><\/p>\n\n\n<table id=\"tablepress-3\" class=\"tablepress tablepress-id-3\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">\u7c7b\u578b<\/th><th class=\"column-2\">\u8bf4\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">\u7c7b\u578b<\/td><td class=\"column-2\">\u53601\u5b57\u8282\uff0c\u6807\u8bc6ICMP\u62a5\u6587\u7684\u7c7b\u578b\uff0c\u4ece\u7c7b\u578b\u503c\u6765\u770bICMP\u62a5\u6587\u53ef\u4ee5\u5206\u4e3a\u4e24\u5927\u7c7b\u3002\u7b2c\u4e00\u7c7b\u662f\u53d6\u503c\u4e3a1~127\u7684\u5dee\u9519\u62a5\u6587\uff0c\u7b2c\u4e8c\u7c7b\u662f\u53d6\u503c128\u4ee5\u4e0a\u7684\u4fe1\u606f\u62a5\u6587<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">\u4ee3\u7801<\/td><td class=\"column-2\">\u53601\u5b57\u8282\uff0c\u6807\u8bc6ICMP\u62a5\u6587\u7684\u4ee3\u7801\u3002\u5b83\u4e0e\u7c7b\u578b\u5b57\u6bb5\u4e00\u8d77\u5171\u540c\u6807\u8bc6\u4e86ICMP\u62a5\u6587\u7684\u8be6\u7ec6\u7c7b\u578b<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">\u6821\u9a8c\u548c<\/td><td class=\"column-2\">\u8fd9\u65f6\u5bf9\u5305\u542bICMP\u62a5\u6587\u6570\u636e\u90e8\u5206\u5728\u5185\u7684\u6574\u4e2aICMP\u6570\u636e\u62a5\u7684\u6821\u9a8c\u548c\uff0c\u4ee5\u68c0\u9a8c\u62a5\u6587\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u662f\u5426\u51fa\u73b0\u4e86\u5dee\u9519\uff08\u5176\u8ba1\u7b97\u65b9\u6cd5\u4e0e\u5728\u6211\u4eec\u4ecb\u7ecdIP\u62a5\u5934\u4e2d\u7684\u6821\u9a8c\u548c\u8ba1\u7b97\u65b9\u6cd5\u662f\u4e00\u6837\u7684\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-3 from cache -->\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">ICMP\u5927\u6982\u5206\u4e3a\u4e24\u7c7b\u62a5\u6587\uff1a<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e00\u7c7b\u662f\u901a\u77e5\u51fa\u9519\u539f\u56e0\uff0c\u4e00\u7c7b\u662f\u7528\u4e8e\u8bca\u65ad\u67e5\u8be2<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7c7b\u578b\u53ca\u542b\u4e49\u5982\u4e0b\uff1a<\/span><\/p>\n\n\n<table id=\"tablepress-4\" class=\"tablepress tablepress-id-4\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">\u7c7b\u578b\uff08\u5341\u8fdb\u5236\uff09<\/th><th class=\"column-2\">\u5185\u5bb9<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">0<\/td><td class=\"column-2\">\u56de\u9001\u5e94\u7b54<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">3<\/td><td class=\"column-2\">\u76ee\u6807\u4e0d\u53ef\u8fbe<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">4<\/td><td class=\"column-2\">\u539f\u70b9\u6291\u5236<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">5<\/td><td class=\"column-2\">\u91cd\u5b9a\u5411\u6216\u6539\u53d8\u8def\u7531<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">8<\/td><td class=\"column-2\">\u56de\u9001\u8bf7\u6c42<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">9<\/td><td class=\"column-2\">\u8def\u7531\u5668\u516c\u544a<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">10<\/td><td class=\"column-2\">\u8def\u7531\u5668\u8bf7\u6c42<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">11<\/td><td class=\"column-2\">\u8d85\u65f6<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">17<\/td><td class=\"column-2\">\u5730\u5740\u5b50\u7f51\u8bf7\u6c42<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">18<\/td><td class=\"column-2\">\u5730\u5740\u5b50\u7f51\u5e94\u7b54<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-4 from cache -->\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5e38\u89c1\u7684ICMP\u62a5\u6587<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u54cd\u5e94\u8bf7\u6c42<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u7528\u7684ping\u64cd\u4f5c\u4e2d\u5c31\u5305\u62ec\u4e86\u54cd\u5e94\u8bf7\u6c42\uff08\u7c7b\u578b\u5b57\u6bb5\u503c\u4e3a8\uff09\u548c\u5e94\u7b54\uff08\u7c7b\u578b\u5b57\u6bb5\u503c\u4e3a0\uff09ICMP\u62a5\u6587\u3002<br>\u4e00\u53f0\u4e3b\u673a\u5411\u4e00\u4e2a\u8282\u70b9\u53d1\u9001\u4e00\u4e2a\u7c7b\u578b\u5b57\u6bb5\u503c\u4e3a8\u7684ICMP\u62a5\u6587\uff0c\u5982\u679c\u9014\u4e2d\u6ca1\u6709\u5f02\u5e38\uff08\u6ca1\u6709\u88ab\u8def\u7531\u4e22\u5f03\uff0c\u76ee\u6807\u4e0d\u56de\u5e94\u6216\u8005\u4f20\u8f93\u5931\u8d25\uff09\uff0c\u5219\u76ee\u6807\u8fd4\u56de\u7c7b\u578b\u5b57\u6bb5\u503c\u4e3a0\u7684ICMP\u62a5\u6587\uff0c\u8bf4\u660e\u8fd9\u53f0\u4e3b\u673a\u5b58\u5728\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u76ee\u6807\u4e0d\u53ef\u8fbe\uff0c\u6e90\u6291\u5236\u548c\u8d85\u65f6\u62a5\u6587<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd9\u4e09\u79cd\u62a5\u6587\u7684\u683c\u5f0f\u662f\u4e00\u6837\u7684\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u76ee\u6807\u4e0d\u53ef\u8fbe\u62a5\u6587\uff08\u7c7b\u578b\u503c\u4e3a3\uff09\u5728\u8def\u7531\u5668\u6216\u4e3b\u673a\u4e0d\u80fd\u4f20\u9012\u6570\u636e\u65f6\u4f7f\u7528\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6e90\u6291\u5236\u62a5\u6587\uff084\uff09\u5219\u5145\u5f53\u4e00\u4e2a\u63a7\u5236\u6d41\u91cf\u7684\u89d2\u8272\uff0c\u901a\u77e5\u4e3b\u673a\u51cf\u5c11\u6570\u636e\u62a5\u6d41\u91cf\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8d85\u65f6\u62a5\u6587\u7684\uff0811\uff09\u7684\u4ee3\u7801\u57df\u6709\u4e24\u79cd\u53d6\u503c\uff1a0\u8868\u793a\u4f20\u8f93\u8d85\u65f6\uff0c1\u8868\u793a\u5206\u6bb5\u91cd\u7ec4\u8d85\u65f6\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65f6\u95f4\u6233\u8bf7\u6c42<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65f6\u95f4\u6233\u8bf7\u6c42\u62a5\u6587\uff0813\uff09\u548c\u65f6\u95f4\u6233\u5e94\u7b54\u62a5\u6587\uff0814\uff09\u7528\u4e8e\u6d4b\u8bd5\u4e24\u53f0\u4e3b\u673a\u4e4b\u95f4\u6570\u636e\u62a5\u6765\u56de\u4e00\u6b21\u7684\u4f20\u8f93\u65f6\u95f4\u3002<\/span><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u4f20\u8f93\u5c42<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7aef\u53e3\u53f7\uff1a\u7528\u4e00\u4e2a16\u4f4d\u7aef\u53e3\u53f7\u8fdb\u884c\u6807\u8bc6\uff0c\u5141\u8bb82^16=65536\u4e2a\u7aef\u53e3\u53f7\u3002\u7aef\u53e3\u53f7\u5177\u6709\u672c\u5730\u610f\u4e49\uff0c\u5373\u7aef\u53e3\u53f7\u53ea\u662f\u4e3a\u4e86<strong>\u6807\u8bc6\u672c\u8ba1\u7b97\u673a\u5e94\u7528\u5c42\u4e2d\u7684\u5404\u8fdb\u7a0b<\/strong>\u3002<\/span><\/p>\n<ul>\n<li>\u719f\u77e5\u7aef\u53e3\/\u4fdd\u7559\u7aef\u53e3\uff08\u670d\u52a1\u7aef\u7aef\u53e3\uff09\uff1a\u6570\u503c\u4e3a0-1023\uff0c\u5f53TCP\/IP\u4e00\u4e9b\u91cd\u8981\u7684\u5e94\u7528\u51fa\u73b0\u65f6\uff0c\u5fc5\u987b\u4e3a\u5b83\u6307\u6d3e\u4e00\u4e2a\u719f\u77e5\u7aef\u53e3\uff0c\u4ee5\u4fbf\u5176\u4ed6\u5e94\u7528\u8fdb\u7a0b\u4e0e\u5176\u4ea4\u4e92\u3002<\/li>\n<li>\u767b\u8bb0\u7aef\u53e3\uff1a\u6570\u503c\u4e3a1024-49151\u3002\u4e3a\u6ca1\u6709\u719f\u77e5\u7aef\u53e3\u53f7\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u7684\uff0c\u4f7f\u7528\u8fd9\u7c7b\u7aef\u53e3\u53f7\u5fc5\u987b\u5728IANA\u767b\u8bb0\uff0c\u4ee5\u9632\u6b62\u91cd\u590d\u3002<\/li>\n<li>\u77ed\u6682\u7aef\u53e3\uff08\u5ba2\u6237\u7aef\u7aef\u53e3\uff09\uff1a\u6570\u503c\u4e3a49152-65536\u3002\u7531\u4e8e\u8fd9\u7c7b\u7aef\u53e3\u53f7\u4ec5\u5728\u5ba2\u6237\u8fdb\u7a0b\u8fd0\u884c\u65f6\u624d\u52a8\u6001\u9009\u62e9\uff0c\u6240\u4ee5\u79f0\u4e3a\u77ed\u6682\u7aef\u53e3\u6216\u4e34\u65f6\u7aef\u53e3\u3002\u901a\u4fe1\u7ed3\u675f\u540e\uff0c\u8be5\u7aef\u53e3\u81ea\u52a8\u7a7a\u95f2\u4e0b\u6765\uff0c\u63d0\u4f9b\u5176\u4ed6\u5ba2\u6237\u8fdb\u7a0b\u4f7f\u7528\u3002<\/li>\n<\/ul>\n\n\n<table id=\"tablepress-5\" class=\"tablepress tablepress-id-5\">\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-1\">\n\t<td class=\"column-1\">\u5e94\u7528\u7a0b\u5e8f<\/td><td class=\"column-2\">FTP<\/td><td class=\"column-3\">TELNET<\/td><td class=\"column-4\">SMTP<\/td><td class=\"column-5\">DNS<\/td><td class=\"column-6\">TFTP<\/td><td class=\"column-7\">HTTP<\/td><td class=\"column-8\">SNMP<\/td>\n<\/tr>\n<tr class=\"row-2\">\n\t<td class=\"column-1\">\u719f\u77e5\u7aef\u53e3\u53f7<\/td><td class=\"column-2\">21<\/td><td class=\"column-3\">23<\/td><td class=\"column-4\">25<\/td><td class=\"column-5\">53<\/td><td class=\"column-6\">69<\/td><td class=\"column-7\">80<\/td><td class=\"column-8\">161<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-5 from cache -->\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5957\u63a5\u5b57\uff1a\u5728\u7f51\u7edc\u4e2d\u91c7\u7528\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u7684\u5957\u63a5\u5b57\u7ec4\u5408\u8bc6\u522b\u7aef\u70b9\uff0c\u5957\u63a5\u5b57\u552f\u4e00\u6807\u8bc6\u4e86\u7f51\u7edc\u4e2d\u4e00\u4e2a\u4e3b\u673a\u548c\u8be5\u4e3b\u673a\u4e2d\u7684\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5957\u63a5\u5b57Socket=\uff08\u4e3b\u673aIP\u5730\u5740\uff0c\u7aef\u53e3\u53f7\uff09<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u8fde\u63a5\uff1a\uff1a={socket1\uff0csocket2}={\uff08IP1\uff1aport1\uff09\uff0c\uff08IP2\uff1aport2\uff09}<\/span><\/p>\n<h2><span style=\"font-size: 18pt; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000;\">UDP\u534f\u8bae<\/span><\/h2>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">UDP\u7684\u4e3b\u8981\u7279\u70b9<\/span><\/strong><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">UDP\u53ea\u5728IP\u6570\u636e\u62a5\u670d\u52a1\u4e4b\u4e0a\u589e\u52a0\u4e86\u590d\u7528\u5206\u7528\u548c\u5dee\u9519\u68c0\u6d4b\u529f\u80fd\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u590d\u7528\u6307\u53d1\u9001\u65b9\u4e0d\u540c\u7684\u5e94\u7528\u8fdb\u7a0b\u90fd\u53ef\u4ee5\u4f7f\u7528\u540c\u4e00\u4e2a\u4f20\u8f93\u5c42\u534f\u8bae\u4f20\u9001\u6570\u636e\u3002\u5206\u7528\u6307\u63a5\u6536\u65b9\u7684\u4f20\u8f93\u5c42\u5728\u5265\u53bb\u62a5\u6587\u7684\u9996\u90e8\u540e\u80fd\u591f\u628a\u8fd9\u4e9b\u6570\u636e\u6b63\u786e\u5730\u4ea4\u4ed8\u7ed9\u76ee\u7684\u5e94\u7528\u8fdb\u7a0b\u3002<\/span><\/p>\n<ul>\n<li>\u4f20\u9001\u6570\u636e\u524d\u65e0\u9700\u5efa\u7acb\u8fde\u63a5\uff0c\u6570\u636e\u5230\u8fbe\u540e\u65e0\u9700\u786e\u8ba4\u3002\u51cf\u5c0f\u5f00\u9500\u548c\u53d1\u9001\u6570\u636e\u4e4b\u524d\u7684\u65f6\u5ef6\u3002<\/li>\n<li>\u4e0d\u4fdd\u8bc1\u53ef\u9760\u4ea4\u4ed8\u3002\uff08\u4ea4\u7531\u5e94\u7528\u5c42\u4fdd\u8bc1\u53ef\u9760\u4ea4\u4ed8\uff09<\/li>\n<li>\u9762\u5411\u62a5\u6587\uff0c\u9002\u5408\u4e00\u6b21\u6027\u4f20\u8f93\u5c11\u91cf\u6570\u636e\u7684\u7f51\u7edc\u5e94\u7528\uff0c\u62a5\u6587\u5934\u90e8\u77ed\uff0c\u4f20\u8f93\u5f00\u9500\u5c0f\u3002<\/li>\n<li>\u65e0\u62e5\u585e\u63a7\u5236\uff0c\u9002\u5408\u5b9e\u65f6\u5e94\u7528\u3002<\/li>\n<li>\u9996\u90e8\u5f00\u9500\u5c0f\uff0c8B\u3002TCP\u662f20B\u3002<\/li>\n<li>\u5e94\u7528\u5c42\u7ed9UDP\u591a\u957f\u7684\u62a5\u6587\uff0cUDP\u53ea\u52a0\u4e0a\u9996\u90e8\u53d1\u9001\u3002\u5373\u4e00\u6b21\u53d1\u9001\u4e00\u4e2a\u5b8c\u6574\u62a5\u6587\u3002<\/li>\n<li>\u652f\u6301\u4e00\u5bf9\u4e00\uff0c\u4e00\u5bf9\u591a\uff0c\u591a\u5bf9\u4e00\uff0c\u591a\u5bf9\u591a\u7684\u4ea4\u4e92\u901a\u4fe1\u3002<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/UDP1-1024x430.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"430\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/UDP1-1024x430.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-306\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">UDP\u62a5\u6587\u6bb5<\/span><\/strong><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">UDP\u6570\u636e\u62a5\u7684\u7ec4\u6210<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/UDP2-1024x282.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"282\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/UDP2-1024x282.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-307\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<h2><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 18pt;\">TCP\u534f\u8bae<\/span><\/h2>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u7684\u4e3b\u8981\u7279\u70b9<\/span><\/strong><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9762\u5411\u8fde\u63a5\uff08\u865a\u8fde\u63a5\uff09\uff0c\u4e0d\u63d0\u4f9b\u5e7f\u64ad\u6216\u591a\u64ad\u670d\u52a1\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6bcf\u4e00\u6761TCP\u8fde\u63a5\u53ea\u80fd\u6709\u4e24\u4e2a\u7aef\u70b9\uff0c\u6bcf\u4e00\u6761TCP\u8fde\u63a5\u53ea\u80fd\u662f\u70b9\u5bf9\u70b9\u7684\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u63d0\u4f9b\u53ef\u9760\u4ea4\u4ed8\u7684\u670d\u52a1\uff0c\u65e0\u5dee\u9519\u3001\u4e0d\u4e22\u5931\u3001\u4e0d\u91cd\u590d\u3001\u6309\u5e8f\u5230\u8fbe\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u63d0\u4f9b\u5168\u53cc\u5de5\u901a\u4fe1\u3002\u4e24\u4e2a\u7aef\u70b9\u90fd\u8bbe\u7f6e\u53d1\u9001\u7f13\u5b58\uff08\u51c6\u5907\u53d1\u9001\u7684\u6570\u636e\u548c\u5df2\u53d1\u9001\u4f46\u672a\u5230\u8fbe\u7684\u6570\u636e\uff09\u548c\u63a5\u53d7\u7f13\u5b58\uff08\u6309\u5e8f\u5230\u8fbe\u4f46\u672a\u88ab\u5e94\u7528\u7a0b\u5e8f\u8bfb\u53d6\u7684\u6570\u636e\u548c\u6ca1\u6309\u5e8f\u5230\u8fbe\u7684\u6570\u636e\uff09\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u62a5\u6587\u6bb5\u5934\u90e8\u957f\uff0c\u4f20\u8f93\u5f00\u9500\u5927\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9762\u5411\u5b57\u8282\u6d41\u3002TCP\u628a\u5e94\u7528\u7a0b\u5e8f\u4ea4\u4e0b\u6765\u7684\u6570\u636e\u770b\u6210\u65e0\u7ed3\u6784\u7684\u5b57\u8282\u6d41\u3002<\/span><\/li>\n<\/ul>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u62a5\u6587\u6bb5<\/span><\/strong><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62a5\u6587\u683c\u5f0f-1024x689.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"689\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62a5\u6587\u683c\u5f0f-1024x689.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-310\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e0b\u9762\u8bf4\u660e\u5404\u5b57\u6bb5\u7684\u4f5c\u7528\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5e8f\u53f7\uff1aTCP\u8fde\u63a5\u4e2d\u4f20\u9001\u7684\u5b57\u8282\u6d41\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5b57\u8282\u90fd\u662f\u6309\u987a\u5e8f\u7f16\u53f7\uff0c\u8be5\u5b57\u6bb5\u8868\u793a\u672c\u62a5\u6587\u6bb5\u6240\u53d1\u9001\u7684\u6570\u636e\u7684<strong>\u7b2c\u4e00\u4e2a\u5b57\u8282\u7684\u5e8f\u53f7<\/strong>\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u786e\u8ba4\u53f7\uff1a<strong>\u671f\u671b<\/strong>\u6536\u5230\u5bf9\u65b9\u4e0b\u4e00\u4e2a\u62a5\u6587\u6bb5\u7684\u7b2c\u4e00\u4e2a\u6570\u636e\u5b57\u8282\u7684\u5e8f\u53f7\u3002\u82e5\u786e\u8ba4\u53f7\u4e3aN\uff0c\u5219\u8bc1\u660e\u5e8f\u53f7N-1\u4e3a\u6b62\u7684\u6240\u6709\u6570\u636e\u5df2\u7ecf\u786e\u8ba4\u6536\u5230\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6570\u636e\u504f\u79fb\uff08<strong>\u9996\u90e8\u957f\u5ea6<\/strong>\uff09\uff1aTCP\u62a5\u6587\u6bb5\u7684\u6570\u636e\u8d77\u59cb\u8ddd\u79bbTCP\u62a5\u6587\u6bb5\u7684\u8d77\u59cb\u5904\u6709\u591a\u8fdc\uff0c\u4ee54B\u4e3a\u5355\u4f4d\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7d27\u6025\u4f4dURG<\/strong>\uff1aURG=1\uff0c\u8868\u660e\u6b64\u62a5\u6587\u6bb5\u6709\u7d27\u6025\u6570\u636e\uff0c\u9ad8\u4f18\u5148\u7ea7\u7684\u6570\u636e\uff0c\u9700\u8981\u5c3d\u5feb\u4f20\u9001\uff0c\u4e0d\u9700\u8981\u5728\u7f13\u5b58\u91cc\u6392\u961f\uff0c\u642d\u914d\u7d27\u6025\u6307\u9488\u5b57\u6bb5\u4f7f\u7528\u3002\u4f18\u5148\u4f20\u9001\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u786e\u8ba4\u4f4dACK<\/strong>\uff1aACK=1\u65f6\u786e\u8ba4\u53f7\u6709\u6548\uff0c\u5efa\u7acb\u8fde\u63a5\u540e\u6240\u6709\u4f20\u9001\u7684\u62a5\u6587\u6bb5\u90fd\u5fc5\u987b\u5c06ACK\u7f6e\u4e3a1\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u63a8\u9001\u4f4dPSH\uff1aPSH=1\u65f6\uff0c\u63a5\u6536\u65b9\u5c3d\u5feb\u4ea4\u4ed8\u63a5\u6536\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e0d\u518d\u7b49\u5f85\u7f13\u5b58\u586b\u6ee1\u518d\u5411\u4e0a\u4ea4\u4ed8\u3002\u4f18\u5148\u4ea4\u4ed8\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u590d\u4f4dRST\uff1aRST=1\u65f6\uff0c\u8868\u660eTCP\u8fde\u63a5\u51fa\u73b0\u4e25\u91cd\u9519\u8bef\uff0c\u5fc5\u987b\u91ca\u653e\u8fde\u63a5\uff0c\u7136\u540e\u91cd\u65b0\u5efa\u7acb\u8fde\u63a5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u540c\u6b65\u4f4dSYN<\/strong>\uff1aSYN=1\u65f6\uff0c\u8868\u660e\u8fd9\u662f\u4e00\u4e2a\u8fde\u63a5\u8bf7\u6c42\/\u8fde\u63a5\u63a5\u53d7\u62a5\u6587\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7ec8\u6b62\u4f4dFIN\uff1aFIN=1\u65f6\uff0c\u91ca\u653e\u8fde\u63a5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7a97\u53e3\uff1a\u6307\u53d1\u9001\u672c\u62a5\u6587\u6bb5\u7684\u4e00\u65b9\u7684<strong>\u63a5\u6536\u7a97\u53e3<\/strong>\uff0c\u5373\u5141\u8bb8\u5bf9\u65b9\u53d1\u9001\u7684\u6570\u636e\u91cf\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u68c0\u9a8c\u548c\uff1a\u68c0\u9a8c\u9996\u90e8\u52a0\u6570\u636e\uff0c\u68c0\u9a8c\u65f6\u4e0eUDP\u4e00\u6837\u52a0\u4e0a12B\u4f2a\u9996\u90e8\uff0c\u534f\u8bae\u5b57\u6bb5\u4e3a6\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7d27\u6025\u6307\u9488\uff1aURG=1\u65f6\u6709\u610f\u4e49\uff0c<\/span><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6307\u672c\u62a5\u6587\u6bb5\u4e2d\u7d27\u6025\u6570\u636e\u7684\u5b57\u8282\u6570\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9009\u9879\uff1a\u6700\u5927\u62a5\u6587\u6bb5\u957f\u5ea6MSS\uff08\u6bcf\u4e00\u4e2aTCP\u62a5\u6587\u6bb5\u4e2d\u7684\u6570\u636e\u5b57\u6bb5\u7684\u6700\u5927\u957f\u5ea6\uff0c\u9ed8\u8ba4536B\uff09\u3001\u7a97\u53e3\u6269\u5927\uff083B\uff09\u3001\u65f6\u95f4\u6233\uff0810B\uff09\u3001\u9009\u62e9\u786e\u8ba4\uff08SACK\uff09\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u5728TCP\u62a5\u6587\u6bb5\u7684\u9996\u90e8\u4e2d\uff0c\u53ea\u6709\u7aef\u53e3\u53f7\u800c\u6ca1\u6709IP\u5730\u5740\u3002\u5f53TCP\u5c06\u5176\u62a5\u6587\u6bb5\u4ea4\u7ed9IP\u5c42\u65f6\uff0cIP\u5982\u4f55\u77e5\u9053\u76ee\u7684IP\u7684\u5730\u5740\u7684\uff1f<\/strong><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7b54\uff1a\u6bd4\u5982HTTP\u8bf7\u6c42\uff0cDNS\u89e3\u6790\u51faIP\u5730\u5740\u540e\u5efa\u7acbsocket\uff0c\u7136\u540e\u8fdb\u884cconnect\u7cfb\u7edf\u8c03\u7528\u7684\u65f6\u5019\uff0cIP\u5730\u5740\u5b9e\u9645\u4e0a\u662f\u4f5c\u4e3a\u53c2\u6570\u4f20\u8fdb\u53bb\u4e86\uff0c\u53ea\u4e0d\u8fc7TCP\u5934\u90e8\u5c01\u88c5\u7684\u65f6\u5019\u6ca1\u653e\u8fdb\u53bb\uff0c\u800c\u662f\u653e\u5728IP\u5934\u91cc\u9762\u4e86\u3002<\/span><\/p>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u8fde\u63a5\u7ba1\u7406<\/span><\/strong><\/p>\n<h3><span style=\"font-size: 14pt; color: #000000; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e09\u6b21\u63e1\u624b\uff08\u7533\u8bf7\u8fde\u63a5\uff09&nbsp;<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u4f20\u8f93\u8fde\u63a5\u5206\u4e3a\u4e09\u4e2a\u9636\u6bb5\uff1a\u8fde\u63a5\u5efa\u7acb\uff0c\u6570\u636e\u4f20\u9001\uff0c\u8fde\u63a5\u91ca\u653e\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u8fde\u63a5\u7684\u7aef\u70b9\u53eb\u505a\u5957\u63a5\u5b57\uff08socket\uff09\u6216\u63d2\u53e3\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u7684\u8fde\u63a5\u548c\u5efa\u7acb\u91c7\u7528\u5ba2\u6237\/\u670d\u52a1\u5668\u65b9\u5f0f\u3002\u4e3b\u52a8\u53d1\u8d77\u8fde\u63a5\u5efa\u7acb\u7684\u5e94\u7528\u8fdb\u7a0b\u53eb\u505a\u5ba2\u6237\uff08Client\uff09\uff0c\u88ab\u52a8\u7b49\u5f85\u8fde\u63a5\u5efa\u7acb\u7684\u5e94\u7528\u8fdb\u7a0b\u53eb\u505a\u670d\u52a1\u5668\uff08Server\uff09\u3002<br>TCP\u4f20\u8f93\u8fde\u63a5\u7684\u5efa\u7acb\u91c7\u7528\u201c\u4e09\u6b21\u63e1\u624b\u201d\u7684\u65b9\u6cd5\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/\u4e09\u6b21\u63e1\u624b-1024x635.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"635\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/\u4e09\u6b21\u63e1\u624b-1024x635.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-314\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u91c7\u7528\u4e09\u6b21\u63e1\u624b\u7684\u65b9\u6cd5\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u9632\u6b62\u62a5\u6587\u6bb5\u5728\u4f20\u8f93\u8fde\u63a5\u5efa\u7acb\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u5dee\u9519\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6b65\u9aa4\u89e3\u6790\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u540c\u6b65\u4f4dSYN=1\uff0c\u968f\u673a\u4ea7\u751f\u4e00\u4e2a\u5e8f\u53f7seq=x\u3002\u5ba2\u6237\u7aef\u53d1\u9001<strong>\u8fde\u63a5\u8bf7\u6c42\u62a5\u6587<\/strong>\uff0c\u65e0\u5e94\u7528\u5c42\u6570\u636e\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', 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18pt;\">\u56db\u6b21\u63e1\u624b\/\u6325\u624b\uff08\u91ca\u653e\u8fde\u63a5\uff09<\/span><\/h3>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/\u56db\u6b21\u63e1\u624b.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"547\" height=\"364\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/\u56db\u6b21\u63e1\u624b.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-316\"  sizes=\"auto, (max-width: 547px) 100vw, 547px\" 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\u9ed1\u4f53;\">\u82e5\u670d\u52a1\u5668\u5df2\u7ecf\u6ca1\u6709\u8981\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u6570\u636e\uff0c\u5176\u5e94\u7528\u8fdb\u7a0b\u53d1\u9001\u8fde\u63a5\u91ca\u653e\u62a5\u6587\u6bb5\uff0c\u7ed3\u675f\u4f4dFIN=1\uff0c\u786e\u8ba4\u4f4dACK=1\uff0c\u5e8f\u53f7seq=w\uff0cack=u+1\uff0c\u670d\u52a1\u5668\u4e3b\u52a8\u5173\u95edTCP\u8fde\u63a5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5ba2\u6237\u7aef\u6536\u5230\u8fde\u63a5\u91ca\u653e\u62a5\u6587\u6bb5\u540e\uff0c\u5fc5\u987b\u53d1\u51fa\u786e\u8ba4\u62a5\u6587\u6bb5\uff0c\u786e\u8ba4\u4f4dACK=1\uff0c\u786e\u8ba4\u53f7ack=w+1\uff0c\u5e8f\u53f7seq=u+1\u3002\u7b49\u5f852MSL\uff08\u65f6\u95f4\u7b49\u5f85\u8ba1\u65f6\u5668\u8bbe\u7f6e\u7684\u6700\u957f\u62a5\u6587\u6bb5\u5bff\u547d\uff0cMSL=2min\uff09\uff0c\u671f\u95f4\u82e5\u518d\u6b21\u6536\u5230\u670d\u52a1\u5668\u53d1\u9001\u7684\u8fde\u63a5\u91ca\u653e\u62a5\u6587\u6bb5\uff08\u5ba2\u6237\u7aef\u786e\u8ba4\u62a5\u6587\u6bb5\u4e22\u5931\uff09\uff0c\u5219\u91cd\u542f\u65f6\u95f4\u7b49\u5f85\u8ba1\u65f6\u5668\u30022MSL\u65f6\u95f4\u540e\u5f7b\u5e95\u5173\u95ed\u8fde\u63a5\u3002\uff08TIME_WAIT)<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 18pt; color: #000000;\">\u8d85\u65f6\u91cd\u4f20\u673a\u5236<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u7684\u53d1\u9001\u65b9\u5728\u91cd\u4f20\u65f6\u95f4\u5185\u6ca1\u6709\u6536\u5230\u786e\u8ba4\u5c31\u91cd\u4f20\u5df2\u53d1\u9001\u7684\u62a5\u6587\u6bb5\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7531\u4e8eTCP\u7684\u4e0b\u5c42\u662f\u4e00\u4e2a\u4e92\u8054\u7f51\u73af\u5883\uff0cIP\u6570\u636e\u62a5\u6240\u9009\u62e9\u7684\u8def\u7531\u53d8\u5316\u5f88\u5927\uff0c\u6240\u4ee5\u8fd0\u8f93\u5c42\u7684\u5f80\u8fd4\u65f6\u5ef6\u7684\u65b9\u5dee\u4e5f\u5f88\u5927\u3002\u4e3a\u4e86\u8ba1\u7b97\u8d85\u65f6\u8ba1\u65f6\u5668\u7684\u91cd\u4f20\u65f6\u95f4\uff0cTCP\u91c7\u7528\u4e00\u79cd\u81ea\u9002\u5e94\u7684\u7b97\u6cd5\uff0c\u52a8\u6001\u6539\u53d8\u91cd\u4f20\u65f6\u95f4RTTs\uff08\u52a0\u6743\u5e73\u5747\u5f80\u8fd4\u65f6\u95f4\uff09\u3002<br>\u8d85\u65f6\u91cd\u4f20\u7b49\u5f85\u65f6\u95f4\u7ed3\u675f\u540e\u624d\u91cd\u4f20\uff0c\u4f7f\u7528\u5197\u4f59\u786e\u8ba4\u65b9\u5f0f\uff0c\u5728\u8d85\u65f6\u4e8b\u4ef6\u53d1\u751f\u4e4b\u524d\uff0c\u77e5\u9053\u53d1\u9001\u65b9\u662f\u5426\u4e22\u5931\u62a5\u6587\u6bb5\u3002<\/span><\/p>\n<h3><span style=\"font-size: 18pt; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000;\"><strong>TCP\u6d41\u91cf\u63a7\u5236<\/strong><\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6d41\u91cf\u63a7\u5236\uff1a\u8ba9\u53d1\u9001\u65b9\u7684\u53d1\u9001\u901f\u7387\u4e0d\u8981\u592a\u5feb\uff0c\u8981\u8ba9\u63a5\u6536\u65b9\u6765\u5f97\u53ca\u63a5\u6536\u3002<br>\u5229\u7528<strong>\u6ed1\u52a8\u7a97\u53e3\u673a\u5236<\/strong>\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u5728TCP\u8fde\u63a5\u4e0a\u5b9e\u73b0\u5bf9\u53d1\u9001\u65b9\u7684\u6d41\u91cf\u63a7\u5236\u3002<br>\u5728\u901a\u4fe1\u8fc7\u7a0b\u4e2d\uff0c\u63a5\u6536\u65b9\u6839\u636e\u81ea\u5df1<strong>\u63a5\u6536\u7f13\u5b58\u7684\u5927\u5c0f<\/strong>\uff0c\u52a8\u6001\u5730\u8c03\u6574\u53d1\u9001\u65b9\u7684\u53d1\u9001\u7a97\u53e3\u5927\u5c0f\uff0c\u5373\u63a5\u6536\u7a97\u53e3rwnd\uff08\u63a5\u6536\u65b9\u8bbe\u7f6e\u786e\u8ba4\u62a5\u6587\u6bb5\u7684\u7a97\u53e3\u5b57\u6bb5\u6765\u5c06rwnd\u901a\u77e5\u7ed9\u53d1\u9001\u65b9\uff09\u3002\u53d1\u9001\u65b9\u7684<strong>\u53d1\u9001\u7a97\u53e3\u53d6\u63a5\u6536\u7a97\u53e3rwnd\u548c\u62e5\u585e\u7a97\u53e3cwnd\u7684\u6700\u5c0f\u503c<\/strong>\u3002<br><\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u6d41\u91cf\u63a7\u5236-1024x666.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"666\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u6d41\u91cf\u63a7\u5236-1024x666.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-318\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u63a5\u6536\u7a97\u53e3\u4e3a0\u65f6\uff0c\u5f53\u63a5\u6536\u5e94\u7528\u7a0b\u5e8f\u8bfb\u53d6\u6536\u6570\u636e\u540e\uff0c\u63a5\u6536\u7a97\u53e3\u6269\u5927\uff0c\u4f46\u53d1\u9001\u65b9\u4e0d\u53d1\u9001\u6570\u636e\uff0c\u5bfc\u81f4\u63a5\u6536\u65b9\u65e0\u6cd5\u53d1\u9001\u786e\u8ba4\u544a\u8bc9\u53d1\u9001\u65b9\u63a5\u6536\u7a97\u53e3\u6269\u5927\uff0c\u53cc\u65b9\u9677\u5165\u6b7b\u9501\u50f5\u5c40\u3002<\/strong><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">TCP\u4e3a\u6bcf\u4e00\u4e2a\u8fde\u63a5\u8bbe\u6709\u4e00\u4e2a\u6301\u7eed\u8ba1\u65f6\u5668\u3002\u53ea\u8981TCP\u8fde\u63a5\u7684\u4e00\u65b9\u6536\u5230\u5bf9\u65b9\u76840\u7a97\u53e3\u901a\u77e5\uff0c\u5c31\u542f\u52a8\u6301\u7eed\u8ba1\u65f6\u5668\u3002<br>\u82e5\u6301\u7eed\u8ba1\u65f6\u5668\u8bbe\u7f6e\u7684\u65f6\u95f4\u5230\u671f\uff0c\u5c31\u53d1\u9001\u4e00\u4e2a<strong>\u96f6\u7a97\u53e3\u63a2\u6d4b\u62a5\u6587\u6bb5<\/strong>\uff08\u4ec5\u643a\u5e261B\u7684\u6570\u636e\uff09\uff0c\u800c\u5bf9\u65b9\u5c31\u5728\u786e\u8ba4\u63a2\u6d4b\u62a5\u6587\u6bb5\u65f6\u7ed9\u51fa\u73b0\u5728\u7684\u7a97\u53e3\u503c\u3002<br>\u82e5\u7a97\u53e3\u4ecd\u7136\u662f0\uff0c\u5219\u63a5\u6536\u5230\u8fd9\u4e2a\u62a5\u6587\u6bb5\u7684\u4e00\u65b9\u5c31\u91cd\u65b0\u8bbe\u7f6e\u6301\u7eed\u8ba1\u65f6\u5668\u3002\u82e5\u7a97\u53e3\u4e0d\u4e3a0\uff0c\u5219\u6b7b\u9501\u50f5\u5c40\u5c31\u88ab\u6253\u7834\u3002<br><\/span><\/p>\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 18pt; color: #000000;\">TCP\u62e5\u585e\u63a7\u5236<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u51fa\u73b0\u62e5\u585e\u7684\u6761\u4ef6\uff1a\u5bf9\u8d44\u6e90\u9700\u6c42\u7684\u603b\u548c&gt;\u53ef\u7528\u8d44\u6e90<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u62e5\u585e\u63a7\u5236\uff1a\u9632\u6b62\u8fc7\u591a\u7684\u6570\u636e\u6ce8\u5165\u5230\u7f51\u7edc\u4e2d\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u62e5\u585e\u63a7\u5236\u4e0e\u6d41\u91cf\u63a7\u5236\u7684\u6027\u8d28\u5bf9\u6bd4<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u62e5\u585e\u63a7\u5236\u6240\u8981\u505a\u7684\u53ea\u6709\u4e00\u4e2a\u524d\u63d0\uff0c\u5c31\u662f\u4f7f\u5f97\u7f51\u7edc\u80fd\u591f\u627f\u53d7\u73b0\u6709\u7684\u7f51\u7edc\u8d1f\u8377\u3002<\/strong><\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u62e5\u585e\u63a7\u5236\u662f\u4e00\u4e2a\u5168\u5c40\u6027\u7684\u8fc7\u7a0b\uff0c\u6d89\u53ca\u7f51\u7edc\u4e2d\u6240\u6709\u7684\u4e3b\u673a\u3001\u6240\u6709\u7684\u8def\u7531\u5668\u4ee5\u53ca\u964d\u4f4e\u7f51\u7edc\u4f20\u8f93\u6027\u80fd\u6709\u5173\u7684\u6240\u6709\u56e0\u7d20\u3002<\/strong><\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u6d41<span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u91cf\u63a7\u5236\u5f80\u5f80\u6307\u5728\u7ed9\u5b9a\u7684\u53d1\u9001\u7aef\u548c\u63a5\u6536\u7aef\u4e4b\u95f4\u7684\u70b9\u5bf9\u70b9\u901a\u4fe1\u91cf\u7684\u63a7\u5236\u3002<\/span><\/strong><\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6d41\u91cf\u63a7\u5236\u6240\u8981\u505a\u7684\u5c31\u662f\u6291\u5236\u53d1\u9001\u7aef\u53d1\u9001\u6570\u636e\u7684\u901f\u7387\uff0c\u4ee5\u4fbf\u63a5\u6536\u7aef\u6765\u5f97\u53ca\u63a5\u6536\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u62e5\u585e\u63a7\u5236\u5f88\u96be\u8bbe\u8ba1\uff0c\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u52a8\u6001\u7684\u95ee\u9898\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53\u524d\u7f51\u7edc\u6b63\u671d\u7740\u9ad8\u901f\u5316\u7684\u65b9\u5411\u53d1\u5c55\uff0c\u5f88\u5bb9\u6613\u51fa\u73b0\u7f13\u5b58\u4e0d\u591f\u5927\u800c\u9020\u6210\u5206\u7ec4\u7684\u4e22\u5931\u3002\u5206\u7ec4\u7684\u4e22\u5931\u662f\u7f51\u7edc\u53d1\u751f\u7684\u5f81\u5146\u800c\u4e0d\u662f\u539f\u56e0\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\uff0c\u6b63\u662f\u62e5\u585e\u63a7\u5236\u672c\u8eab\u6210\u4e3a\u5f15\u8d77\u7f51\u7edc\u6027\u80fd\u6076\u5316\u751a\u81f3\u53d1\u751f\u6b7b\u9501\u7684\u539f\u56e0\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\uff1a<\/strong><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u63a5\u6536\u7a97\u53e3<\/strong>\uff1a\u63a5\u6536\u65b9\u6839\u636e\u63a5\u6536\u7f13\u5b58\u8bbe\u7f6e\u7684\u503c\uff0c\u5e76\u544a\u77e5\u7ed9\u53d1\u9001\u65b9\uff0c\u53cd\u6620\u63a5\u6536\u65b9\u5bb9\u91cf\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u62e5\u585e\u7a97\u53e3<\/strong>\uff1a\u53d1\u9001\u65b9\u6839\u636e\u81ea\u5df1\u4f30\u7b97\u7684\u7f51\u7edc\u62e5\u585e\u6210\u90fd\u800c\u8bbe\u7f6e\u7684\u7a97\u53e3\u503c\uff0c\u53cd\u6620\u7f51\u7edc\u5f53\u524d\u5bb9\u91cf\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62e5\u585e\u63a7\u5236-1024x593.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"593\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62e5\u585e\u63a7\u5236-1024x593.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-320\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 18pt;\">\u6162\u5f00\u59cb\u548c\u62e5\u585e\u907f\u514d<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u6162\u5f00\u59cb\u539f\u7406\uff1a<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5728\u4e3b\u673a\u521a\u521a\u5f00\u59cb\u53d1\u9001\u62a5\u6587\u6bb5\u65f6\u53ef\u5148\u8bbe\u7f6e\u62e5\u585e\u7a97\u53e3cwnd=1\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5728\u6bcf\u6536\u5230\u4e00\u4e2a\u5bf9\u65b0\u7684\u62a5\u6587\u6bb5\u7684\u786e\u8ba4\u540e\uff0c\u5c06\u62e5\u585e\u7a97\u53e3\u52a01\uff0c\u5373\u589e\u52a0\u4e00\u4e2aMSS\u7684\u6570\u503c\u3002\u76f8\u5f53\u4e8e\u6307\u6570\u89c4\u5f8b\u589e\u957f\uff08\u7ffb\u500d\uff09\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7528\u8be5\u65b9\u6cd5\u9010\u6b65\u589e\u5927\u53d1\u9001\u7aef\u7684\u62e5\u585e\u7a97\u53e3cwnd\uff0c\u53ef\u4ee5\u4f7f\u5206\u7ec4\u6ce8\u5165\u7f51\u7edc\u7684\u901f\u7387\u66f4\u5408\u7406\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u62e5\u585e\u907f\u514d\u7b97\u6cd5\u539f\u7406\uff1a<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e3a\u9632\u6b62\u62e5\u585e\u7a97\u53e3cwnd\u7684\u589e\u957f\u5f15\u8d77\u7f51\u7edc\u963b\u585e\uff0c\u9700\u8981\u4e00\u4e2a\u72b6\u6001\u53d8\u91cf\uff0c\u5373\u6162\u5f00\u59cb\u95e8\u9650ssthresh\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53cwnd&lt;ssthresh\u65f6\uff0c\u4f7f\u7528\u6162\u5f00\u59cb\u7b97\u6cd5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53cwnd&gt;ssthresh\u65f6\uff0c\u505c\u6b62\u4f7f\u7528\u6162\u5f00\u59cb\u7b97\u6cd5\uff0c\u6539\u7528\u62e5\u585e\u907f\u514d\u7b97\u6cd5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53cwnd=ssthresh\u65f6\uff0c\u65e2\u53ef\u4ee5\u4f7f\u7528\u6162\u5f00\u59cb\u7b97\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u62e5\u585e\u907f\u514d\u7b97\u6cd5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5176\u4e2d\uff0c\u62e5\u585e\u907f\u514d\u7b97\u6cd5\u7684\u505a\u6cd5\u4e3a\uff0c\u53d1\u9001\u7aef\u7684\u62e5\u585e\u7a97\u53e3cwnd\u6bcf\u7ecf\u8fc7\u4e00\u4e2a\u5f80\u8fd4\u65f6\u5ef6RTT\u5c31\u589e\u52a0\u4e00\u4e2aMSS\u7684\u5927\u5c0f\uff0c\u901a\u5e38\u8868\u73b0\u4e3a\u6309\u7ebf\u6027\u89c4\u5f8b\u589e\u957f\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65e0\u8bba\u5728\u6162\u5f00\u59cb\u9636\u6bb5\u8fd8\u662f\u62e5\u585e\u907f\u514d\u9636\u6bb5\uff0c\u53ea\u8981\u53d1\u9001\u65b9\u5224\u65ad\u7f51\u7edc\u51fa\u73b0\u62e5\u585e\uff08\u8d85\u65f6\uff09\uff0c\u5c31\u628a\u6162\u5f00\u59cb\u95e8\u9650ssthresh\u8bbe\u7f6e\u4e3a\u51fa\u73b0\u62e5\u585e\u65f6\u7684\u62e5\u585e\u7a97\u53e3\u7684\u4e00\u534a\uff08\u4f46\u4e0d\u80fd\u5c0f\u4e8e2\uff09\u3002\u7136\u540e\u628a\u62e5\u585e\u7a97\u53e3\u91cd\u65b0\u8bbe\u5b9a\u4e3a1\uff0c\u6267\u884c\u6162\u5f00\u59cb\u7b97\u6cd5\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62e5\u585e\u63a7\u52361.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1015\" height=\"492\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62e5\u585e\u63a7\u52361.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-324\"  sizes=\"auto, (max-width: 1015px) 100vw, 1015px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62e5\u585e\u63a7\u52362-1024x629.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"629\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u62e5\u585e\u63a7\u52362-1024x629.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-326\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e00\u4e2a\u4f20\u8f93\u8f6e\u6b21\uff1a\u53d1\u9001\u4e86\u4e00\u6279\u62a5\u6587\u6bb5\u5e76\u6536\u5230\u5b83\u4eec\u7684\u786e\u8ba4\u7684\u65f6\u95f4\/\u4e00\u4e2a\u5f80\u8fd4\u65f6\u5ef6RTT\/\u5f00\u59cb\u7684\u53d1\u9001\u4e00\u6279\u62e5\u585e\u7a97\u53e3\u5185\u7684\u62a5\u6587\u6bb5\u5230\u5f00\u59cb\u53d1\u9001\u4e0b\u4e00\u6279\u62e5\u585e\u7a97\u53e3\u5185\u7684\u62a5\u6587\u6bb5\u7684\u65f6\u95f4\u3002<\/span><\/p>\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 18pt;\">\u5feb\u91cd\u4f20\u548c\u5feb\u6062\u590d<\/span><\/h3>\n<p><strong>\u5feb\u91cd\u4f20<\/strong>\uff1a\u9996\u5148\u8981\u6c42\u63a5\u6536\u65b9\u6bcf\u6536\u5230\u4e00\u4e2a\u5931\u5e8f\u7684\u62a5\u6587\u6bb5\u540e\u7acb\u5373\u53d1\u51fa\u786e\u8ba4\uff0c\u8ba9\u53d1\u9001\u65b9\u53ca\u65e9\u77e5\u9053\u6709\u62a5\u6587\u6bb5\u6ca1\u6709\u5230\u8fbe\u63a5\u6536\u65b9\u3002\u53d1\u9001\u65b9\u53ea\u8981\u8fde\u7eed\u6536\u52303\u4e2a\u91cd\u590d\u786e\u8ba4\u5c31\u7acb\u523b\u91cd\u4f20\u5bf9\u65b9\u5c1a\u672a\u6536\u5230\u7684\u62a5\u6587\u6bb5\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u5feb\u91cd\u4f20-1024x573.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"573\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/TCP\u5feb\u91cd\u4f20-1024x573.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-328\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u5feb\u6062\u590d\u7b97\u6cd5\uff1a<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53\u53d1\u9001\u7aef\u6536\u5230\u8fde\u7eed3\u4e2a\u91cd\u590d\u7684ACK\uff0c\u91cd\u65b0\u8bbe\u7f6e\u65b0\u7684\u6162\u5f00\u59cb\u95e8\u9650ssthresh=cwnd\/2\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e0e\u6162\u5f00\u59cb\u4e0d\u540c\u7684\u662f\u62e5\u585e\u7a97\u53e3\u4e0d\u662f\u8bbe\u7f6e\u4e3a1\uff0c\u800c\u662f\u548c\u8bbe\u7f6e\u4e3a\u65b0\u7684\u6162\u5f00\u59cb\u95e8\u9650ssthresh\u4e00\u6837\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u82e5\u53d1\u9001\u7a97\u53e3\u503c\u8fd8\u5141\u8bb8\u53d1\u9001\u62a5\u6587\u6bb5\uff0c\u5c31\u6309\u62e5\u585e\u907f\u514d\u7b97\u6cd5\u7ee7\u7eed\u53d1\u9001\u62a5\u6587\u6bb5\u3002<\/span><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 24pt;\">\u5e94\u7528\u5c42<\/span><\/h1>\n<h2><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 18pt;\">DNS\u534f\u8bae<\/span><\/h2>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u679c\u8bf4ARP\u534f\u8bae\u662f\u7528\u6765\u5c06IP\u5730\u5740\u8f6c\u6362\u4e3aMAC\u5730\u5740\uff0c\u90a3\u4e48DNS\u534f\u8bae\u5219\u662f\u7528\u6765\u5c06\u57df\u540d\u8f6c\u6362\u4e3aIP\u5730\u5740\uff08\u4e5f\u53ef\u4ee5\u5c06IP\u5730\u5740\u8f6c\u6362\u4e3a\u76f8\u5e94\u7684\u57df\u540d\uff09\u3002<\/span><\/p>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">DNS\u57df\u540d\u7ed3\u6784<\/span><\/strong><\/p>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u57df\u540d\u7684\u5c42\u6b21\u7ed3\u6784<\/span><\/strong><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u57df\u540d\u7cfb\u7edf\u5fc5\u987b\u8981\u4fdd\u6301\u552f\u4e00\u6027\u3002\u4e3a\u4e86\u8fbe\u5230\u552f\u4e00\u6027\u7684\u76ee\u7684\uff0c\u56e0\u7279\u7f51\u5728\u547d\u540d\u7684\u65f6\u5019\u91c7\u7528\u4e86\u5c42\u6b21\u7ed3\u6784\u7684\u547d\u540d\u65b9\u6cd5\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6bcf\u4e00\u4e2a\u57df\u540d\u90fd\u662f\u4e00\u4e2a\u6807\u53f7\u5e8f\u5217\uff08labels\uff09\uff0c\u7528\u5b57\u6bcd\uff08A-Z, a-z\uff0c\u5927\u5c0f\u5199\u7b49\u4ef7\uff09\u3001\u6570\u5b57\uff080-9\uff09\u548c\u8fde\u63a5\u7b26\uff08-\uff09\u7ec4\u6210\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6807\u53f7\u5e8f\u5217\u603b\u957f\u5ea6\u4e0d\u80fd\u8d85\u8fc7255\u4e2a\u5b57\u7b26\uff0c\u5b83\u7531\u70b9\u597d\u5206\u5272\u6210\u4e00\u4e2a\u4e2a\u6807\u53f7\uff08label\uff09\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6bcf\u4e2a\u6807\u53f7\u5e94\u8be5\u572863\u4e2a\u5b57\u7b26\u4e4b\u5185\uff0c\u6bcf\u4e2a\u6807\u53f7\u90fd\u53ef\u4ee5\u770b\u6210\u4e00\u4e2a\u5c42\u6b21\u7684\u57df\u540d\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7ea7\u522b\u4f4e\u7684\u57df\u540d\u5199\u5728\u5de6\u8fb9\uff0c\u7ea7\u522b\u9ad8\u7684\u57df\u540d\u5199\u5728\u53f3\u8fb9\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u57df\u540d\u670d\u52a1\u4e3b\u8981\u662f\u57fa\u4e8eUDP\u5b9e\u73b0\u7684\uff0c\u670d\u52a1\u5668\u7684\u7aef\u53e3\u53f7\u4e3a53\u3002<\/strong><\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5173\u4e8e\u57df\u540d\u7684\u5c42\u6b21\u7ed3\u6784\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/\u57df\u540d\u5c42\u6b21\u7ed3\u6784.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"566\" height=\"212\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/\u57df\u540d\u5c42\u6b21\u7ed3\u6784.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-332\"  sizes=\"auto, (max-width: 566px) 100vw, 566px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e3e\u4f8b\uff1awww.baidu.com<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">com\uff1a\u4e00\u7ea7\u57df\u540d\uff0c\u8868\u793a\u8fd9\u662f\u4e00\u4e2a\u4f01\u4e1a\u57df\u540d\u3002\u540c\u7ea7\u7684\u8fd8\u6709net\uff08\u7f51\u7edc\u63d0\u4f9b\u5546\uff09\uff0corg\uff08\u975e\u76c8\u5229\u7ec4\u7ec7\uff09\u7b49\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">baidu\uff1a\u4e8c\u7ea7\u57df\u540d\uff0c\u6307\u516c\u53f8\u540d\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">www\uff1a\u4e07\u7ef4\u7f51\uff0c\u53ea\u662f\u4e00\u79cd\u4e60\u60ef\u7528\u6cd5\u3002<\/span><\/li>\n<\/ul>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', 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style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 18pt;\">FTP\u534f\u8bae<\/span><\/h2>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6587\u4ef6\u4f20\u8f93\u534f\u8bae\uff08FTP\uff09\u4f5c\u4e3a\u7f51\u7edc\u5171\u4eab\u6587\u4ef6\u7684\u4f20\u8f93\u534f\u8bae\uff0c\u5728\u7f51\u7edc\u5e94\u7528\u8f6f\u4ef6\u4e2d\u5177\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u3002FTP\u7684\u76ee\u6807\u662f\u63d0\u9ad8\u6587\u4ef6\u7684\u5171\u4eab\u6027\u548c\u53ef\u9760\u9ad8\u6548\u5730\u4f20\u9001\u6570\u636e\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">FTP\u662fTCP\/IP\u534f\u8bae\u7ec4\u4e2d\u7684\u534f\u8bae\u4e4b\u4e00\u3002FTP\u534f\u8bae\u5305\u62ec\u4e24\u4e2a\u7ec4\u6210\u90e8\u5206\uff0c\u5176\u4e00\u4e3aFTP\u670d\u52a1\u5668\uff0c\u5176\u4e8c\u4e3aFTP\u5ba2\u6237\u7aef\u3002\u5176\u4e2dFTP\u670d\u52a1\u5668\u7528\u6765\u5b58\u50a8\u6587\u4ef6\uff0c\u7528\u6237\u53ef\u4ee5\u4f7f\u7528FTP\u5ba2\u6237\u7aef\u901a\u8fc7FTP\u534f\u8bae\u8bbf\u95ee\u4f4d\u4e8eFTP\u670d\u52a1\u5668\u4e0a\u7684\u8d44\u6e90\u3002\u7531\u4e8eFTP\u4f20\u8f93\u6548\u7387\u975e\u5e38\u9ad8\uff0c\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93\u5927\u7684\u6587\u4ef6\u65f6\uff0c\u4e00\u822c\u91c7\u7528\u8be5\u534f\u8bae\u3002<br>\u9ed8\u8ba4\u60c5\u51b5\u4e0bFTP\u534f\u8bae\u4f7f\u7528TCP\u7aef\u53e3\u4e2d\u768420\u548c21\u8fd9\u4e24\u4e2a\u7aef\u53e3\uff0c\u5176\u4e2d20\u7528\u4e8e\u4f20\u8f93\u6570\u636e\uff0c21\u7528\u4e8e\u4f20\u8f93\u63a7\u5236\u4fe1\u606f\u3002\u4f46\u662f\uff0c\u662f\u5426\u4f7f\u752820\u4f5c\u4e3a\u4f20\u8f93\u6570\u636e\u7684\u7aef\u53e3\u4e0eFTP\u4f7f\u7528\u7684\u4f20\u8f93\u6a21\u5f0f\u6709\u5173\uff0c\u5982\u679c\u91c7\u7528\u4e3b\u52a8\u6a21\u5f0f\uff0c\u90a3\u4e48\u6570\u636e\u4f20\u8f93\u7aef\u53e3\u5c31\u662f20\uff1b\u5982\u679c\u91c7\u7528\u88ab\u52a8\u6a21\u5f0f\uff0c\u5219\u5177\u4f53\u6700\u7ec8\u4f7f\u7528\u54ea\u4e2a\u7aef\u53e3\u8981\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u534f\u5546\u51b3\u5b9a\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u5de5\u4f5c\u65b9\u5f0f<\/strong><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>Port\uff08\u4e3b\u52a8\u6a21\u5f0f\uff09<\/strong><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">FTP\u5ba2\u6237\u7aef\u9996\u5148\u548cFTP\u670d\u52a1\u5668\u768421\u7aef\u53e3\u5efa\u7acb\u8fde\u63a5\uff0c\u901a\u8fc7\u8fd9\u4e2a\u901a\u9053\u53d1\u9001\u547d\u4ee4\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u63a5\u6536\u6570\u636e\u7684\u65f6\u5019\u5728\u8fd9\u4e2a\u901a\u9053\u4e0a\u53d1\u9001PORT\u547d\u4ee4\u3002PORT\u547d\u4ee4\u5305\u542b\u4e86\u5ba2\u6237\u7aef\u7528\u4ec0\u4e48\u7aef\u53e3\u63a5\u6536\u6570\u636e\u3002\u5728\u4f20\u9001\u6570\u636e\u7684\u65f6\u5019\uff0c\u670d\u52a1\u5668\u7aef\u901a\u8fc7\u81ea\u5df1\u7684TCP 20\u7aef\u53e3\u8fde\u63a5\u81f3\u5ba2\u6237\u7aef\u7684\u6307\u5b9a\u7aef\u53e3\u53d1\u9001\u6570\u636e\u3002FTP\u670d\u52a1\u5668\u5fc5\u987b\u548c\u5ba2\u6237\u7aef\u5efa\u7acb\u4e00\u4e2a\u65b0\u7684\u8fde\u63a5\u6765\u4f20\u9001\u6570\u636e\u3002<\/span><\/p>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">Passive\uff08\u88ab\u52a8\u6a21\u5f0f\uff09<\/span><\/strong><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5728\u5efa\u7acb\u63a7\u5236\u901a\u9053\u7684\u65f6\u5019\u548c\u4e3b\u52a8\u6a21\u5f0f\u7c7b\u4f3c\uff0c\u4f46\u5efa\u7acb\u8fde\u63a5\u540e\u53d1\u9001\u7684\u4e0d\u662fPORT\u547d\u4ee4\uff0c\u800c\u662fPASV\u547d\u4ee4\u3002FTP\u670d\u52a1\u5668\u7aef\u6536\u5230PASV\u547d\u4ee4\u540e\uff0c\u968f\u673a\u6253\u5f00\u4e00\u4e2a\u9ad8\u7aef\u7aef\u53e3\uff08\u7aef\u53e3\u53f7\u5927\u4e8e1024\uff09\u5e76\u4e14\u901a\u77e5\u5ba2\u6237\u7aef\u5728\u8fd9\u4e2a\u7aef\u53e3\u4e0a\u4f20\u9001\u6570\u636e\u7684\u8bf7\u6c42\uff0c\u5ba2\u6237\u7aef\u8fde\u63a5FTP\u670d\u52a1\u5668\u6b64\u7aef\u53e3\uff0c\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u901a\u9053\uff0c\u7136\u540eFTP\u670d\u52a1\u5668\u5c06\u901a\u8fc7\u8fd9\u4e2a\u7aef\u53e3\u8fdb\u884c\u6570\u636e\u7684\u4f20\u9001\u3002<\/span><\/p>\n<h2><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 18pt; color: #000000;\">HTTP\u534f\u8bae<\/span><\/h2>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">HTTP\u534f\u8bae\uff08\u8d85\u6587\u672c\u4f20\u8f93\u534f\u8bae\uff09\u662f\u7528\u4e8e\u4ece\u4e07\u7ef4\u7f51\u670d\u52a1\u5668\u4f20\u8f93\u8d85\u6587\u672c\u5230\u672c\u5730\u6d4f\u89c8\u5668\u7684\u4f20\u9001\u534f\u8bae\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">HTTP\u662f\u57fa\u4e8eTCP\/IP\u901a\u4fe1\u534f\u8bae\u6765\u4f20\u9012\u6570\u636e\u7684\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">HTTP\u534f\u8bae\u5de5\u4f5c\u4e8e\u5ba2\u6237\u7aef-\u670d\u52a1\u7aef\u67b6\u6784\u4e0a\u3002\u6d4f\u89c8\u5668\u4f5c\u4e3aHTTP\u5ba2\u6237\u7aef\u901a\u8fc7URL\u5411HTTP\u670d\u52a1\u7aef\u5373WEB\u670d\u52a1\u5668\u53d1\u9001\u6240\u6709\u8bf7\u6c42\u3002Web\u670d\u52a1\u5668\u6839\u636e\u63a5\u6536\u5230\u7684\u8bf7\u6c42\uff0c\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u54cd\u5e94\u4fe1\u606f\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u4e3b\u8981\u7279\u70b9<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7b80\u5355\u5feb\u901f\uff1a\u5ba2\u6237\u5411\u670d\u52a1\u5668\u8bf7\u6c42\u670d\u52a1\u65f6\uff0c\u53ea\u9700\u4f20\u9001\u8bf7\u6c42\u65b9\u6cd5\u548c\u8def\u5f84\u3002\u8bf7\u6c42\u65b9\u6cd5\u5e38\u7528\u7684\u6709GET\u3001HEAD\u3001POST\u3002\u6bcf\u79cd\u65b9\u6cd5\u89c4\u5b9a\u4e86\u5ba2\u6237\u4e0e\u670d\u52a1\u5668\u8054\u7cfb\u7684\u7c7b\u578b\u3002\u7531\u4e8eHTTP\u534f\u8bae\u7b80\u5355\uff0c\u4f7f\u5f97HTTP\u670d\u52a1\u5668\u7684\u7a0b\u5e8f\u89c4\u6a21\u5c0f\uff0c\u56e0\u800c\u901a\u4fe1\u901f\u5ea6\u5f88\u5feb\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7075\u6d3b\uff1aHTTP\u5141\u8bb8\u4f20\u8f93\u4efb\u610f\u7c7b\u578b\u7684\u6570\u636e\u5bf9\u8c61\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65e0\u8fde\u63a5\uff1a\u65e0\u8fde\u63a5\u7684\u542b\u4e49\u65f6\u9650\u5236\u6bcf\u6b21\u8fde\u63a5\u53ea\u5904\u7406\u4e00\u4e2a\u8bf7\u6c42\u3002\u670d\u52a1\u5668\u5904\u7406\u5b8c\u5ba2\u6237\u7684\u8bf7\u6c42\uff0c\u5e76\u6536\u5230\u5ba2\u6237\u7684\u5e94\u7b54\u540e\uff0c\u5373\u65ad\u5f00\u8fde\u63a5\u3002\u8282\u7701\u4f20\u8f93\u65f6\u95f4\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65e0\u72b6\u6001\uff1aHTTP\u534f\u8bae\u65f6\u65e0\u72b6\u6001\u534f\u8bae\u3002\u65e0\u72b6\u6001\u65f6\u6307\u534f\u8bae\u5bf9\u4e8b\u7269\u5904\u7406\u6ca1\u6709\u8bb0\u5fc6\u80fd\u529b\u3002\u7f3a\u5c11\u72b6\u6001\u610f\u5473\u7740\u5982\u679c\u540e\u7eed\u5904\u7406\u9700\u8981\u524d\u9762\u7684\u4fe1\u606f\uff0c\u5219\u5b83\u5fc5\u987b\u91cd\u4f20\uff0c\u8fd9\u6837\u53ef\u80fd\u5bfc\u81f4\u6bcf\u6b21\u8fde\u63a5\u4f20\u9001\u7684\u6570\u636e\u91cf\u589e\u5927\u3002\u4f46\u53e6\u4e00\u65b9\u9762\uff0c\u5728\u670d\u52a1\u5668\u4e0d\u9700\u8981\u5148\u524d\u4fe1\u606f\u65f6\u5b83\u7684\u5e94\u7b54\u5c31\u8f83\u5feb\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u652f\u6301B\/S\u53caC\/S\u6a21\u5f0f\u3002<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 14pt; color: #000000;\"><strong>HTTP\u4e4b\u8bf7\u6c42\u6d88\u606fRequest<\/strong><\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u4e2aHTTP\u8bf7\u6c42\u5230\u670d\u52a1\u5668\u7684\u8bf7\u6c42\u6d88\u606f\u5305\u62ec\u4ee5\u4e0b\u683c\u5f0f\uff1a<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u8bf7\u6c42\u884c\uff08request line\uff09\u3001\u8bf7\u6c42\u5934\u90e8\uff08header\uff09\uff0c\u7a7a\u884c\u548c\u8bf7\u6c42\u6570\u636e\u56db\u4e2a\u90e8\u5206\u7ec4\u6210\u3002<\/strong><\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"932\" height=\"361\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-339\"  sizes=\"auto, (max-width: 932px) 100vw, 932px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"894\" height=\"542\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-340\"  sizes=\"auto, (max-width: 894px) 100vw, 894px\" \/><\/div><\/figure>\n\n\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7b2c\u4e00\u90e8\u5206\uff1a\u8bf7\u6c42\u884c\uff0c\u7528\u6765\u8bf4\u660e\u8bf7\u6c42\u7c7b\u578b\uff0c\u8981\u8bbf\u95ee\u7684\u8d44\u6e90\u4ee5\u53ca\u6240\u4f7f\u7528\u7684HTTP\u7248\u672c\u3002<\/span><\/strong><br><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7b2c\u4e8c\u90e8\u5206\uff1a\u8bf7\u6c42\u5934\u90e8\uff0c\u7d27\u63a5\u7740\u8bf7\u6c42\u884c\uff08\u5373\u7b2c\u4e00\u884c\uff09\u4e4b\u540e\u7684\u90e8\u5206\uff0c\u7528\u6765\u8bf4\u660e\u670d\u52a1\u5668\u8981\u4f7f\u7528\u7684\u9644\u52a0\u4fe1\u606f\u3002<br><\/span><\/strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4ece\u7b2c\u4e8c\u884c\u8d77\u4e3a\u8bf7\u6c42\u5934\u90e8\uff0cHOST\u5c06\u6307\u51fa\u8bf7\u6c42\u7684\u76ee\u7684\u5730\u3002User-Agent\uff0c\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u811a\u672c\u90fd\u80fd\u8bbf\u95ee\u5b83\uff0c\u5b83\u662f\u6d4f\u89c8\u5668\u7c7b\u578b\u68c0\u6d4b\u903b\u8f91\u7684\u91cd\u8981\u57fa\u7840\u3002\u8be5\u4fe1\u606f\u7531\u6d4f\u89c8\u5668\u6765\u5b9a\u4e49\uff0c\u5e76\u4e14\u5728\u6bcf\u4e2a\u8bf7\u6c42\u4e2d\u81ea\u52a8\u53d1\u9001\u7b49\u7b49\u3002<br><strong>\u7b2c\u4e09\u90e8\u5206\uff1a\u7a7a\u884c\uff0c\u8bf7\u6c42\u5934\u90e8\u540e\u9762\u7684\u7a7a\u884c\u65f6\u5fc5\u987b\u7684\u3002<\/strong><br>\u5373\u4f7f\u7b2c\u56db\u90e8\u5206\u7684\u8bf7\u6c42\u6570\u636e\u4e3a\u7a7a\uff0c\u4e5f\u5fc5\u987b\u7531\u7a7a\u884c\u3002<br><strong>\u7b2c\u56db\u90e8\u5206\uff1a\u8bf7\u6c42\u6570\u636e\uff0c\u4e5f\u53eb\u4e3b\u4f53\uff0c\u53ef\u4ee5\u6dfb\u52a0\u4efb\u610f\u7684\u5176\u4ed6\u6570\u636e\u3002<\/strong><br>\u8fd9\u4e2a\u4f8b\u5b50\u7684\u8bf7\u6c42\u6570\u636e\u4e3a\u7a7a\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"908\" height=\"580\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-342\"  sizes=\"auto, (max-width: 908px) 100vw, 908px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u4e00\u90e8\u5206<\/strong>\uff1a\u8bf7\u6c42\u884c\uff0c\u7b2c\u4e00\u884c\u660e\u4e86\u65f6POST\u8bf7\u6c42\uff0c\u4ee5\u53ca\u7248\u672c\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u4e8c\u90e8\u5206<\/strong>\uff1a\u8bf7\u6c42\u5934\u90e8\uff0c\u7b2c\u4e8c\u884c\u81f3\u7b2c\u516d\u884c\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u4e09\u90e8\u5206<\/strong>\uff1a\u7a7a\u884c\uff0c\u7b2c\u4e03\u884c\u7684\u7a7a\u884c\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u56db\u90e8\u5206<\/strong>\uff1a\u8bf7\u6c42\u6570\u636e\uff0c\u7b2c\u516b\u884c\u3002<\/span><\/p>\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 14pt; color: #000000;\">HTTP\u4e4b\u54cd\u5e94\u6d88\u606fResponse<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u670d\u52a1\u5668\u63a5\u6536\u5e76\u5904\u7406\u5ba2\u6237\u7aef\u53d1\u8fc7\u6765\u7684\u8bf7\u6c42\u540e\u4f1a\u8fd4\u56de\u4e00\u4e2aHTTP\u7684\u54cd\u5e94\u6d88\u606f\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">HTTP\u54cd\u5e94\u4e5f\u7531\u56db\u4e2a\u90e8\u5206\u7ec4\u6210\uff0c\u5206\u522b\u662f\uff1a\u72b6\u6001\u884c\u3001\u6d88\u606f\u62a5\u5934\u3001\u7a7a\u884c\u548c\u54cd\u5e94\u6b63\u6587\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"601\" height=\"596\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-344\"  sizes=\"auto, (max-width: 601px) 100vw, 601px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u4e00\u90e8\u5206<\/strong>\uff1a\u72b6\u6001\u884c\uff0c\u7531HTTP\u534f\u8bae\u7248\u672c\u53f7\uff0c\u72b6\u6001\u7801\uff0c\u72b6\u6001\u6d88\u606f\u4e09\u90e8\u5206\u7ec4\u6210\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u4e8c\u90e8\u5206<\/strong>\uff1a\u6d88\u606f\u62a5\u5934\uff0c\u7528\u6765\u8bf4\u660e\u5ba2\u6237\u7aef\u8981\u4f7f\u7528\u7684\u4e00\u4e9b\u9644\u52a0\u4fe1\u606f\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u4e09\u90e8\u5206<\/strong>\uff1a\u7a7a\u884c\uff0c\u662f\u5fc5\u987b\u6709\u7684\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7b2c\u56db\u90e8\u5206<\/strong>\uff1a\u54cd\u5e94\u6b63\u6587\uff0c\u670d\u52a1\u5668\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u7684\u6587\u672c\u4fe1\u606f\u3002<\/span><\/p>\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 14pt; color: #000000;\">HTTP\u4e4b\u72b6\u6001\u7801<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u72b6\u6001\u4ee3\u7801\u6709\u4e09\u4f4d\u6570\u5b57\u7ec4\u6210\uff0c\u7b2c\u4e00\u4e2a\u6570\u5b57\u5b9a\u4e49\u4e86\u54cd\u5e94\u7684\u7c7b\u522b\uff0c\u5171\u5206\u4e94\u79cd\u7c7b\u522b\uff1a<br><strong>1xx\uff1a\u6307\u793a\u4fe1\u606f\u2014\u2014\u8bf7\u6c42\u5df2\u63a5\u6536\uff0c\u7ee7\u7eed\u5904\u7406\u3002<\/strong><br><strong>2xx\uff1a\u6210\u529f\u2014\u2014\u8bf7\u6c42\u5df2\u88ab\u6210\u529f\u63a5\u6536\u3001\u7406\u89e3\u3001\u63a5\u53d7\u3002<\/strong><br><strong>3xx\uff1a\u91cd\u5b9a\u5411\u2014\u2014\u8981\u5b8c\u6210\u8bf7\u6c42\u5fc5\u987b\u8fdb\u884c\u66f4\u8fdb\u4e00\u6b65\u7684\u64cd\u4f5c\u3002<\/strong><br><strong>4xx\uff1a\u5ba2\u6237\u7aef\u9519\u8bef\u2014\u2014\u8bf7\u6c42\u6709\u8bed\u6cd5\u9519\u8bef\u6216\u65e0\u6cd5\u5b9e\u73b0\u3002<\/strong><br><strong>5xx\uff1a\u670d\u52a1\u5668\u7aef\u9519\u8bef\u2014\u2014\u670d\u52a1\u5668\u672a\u80fd\u5b9e\u73b0\u5408\u6cd5\u7684\u8bf7\u6c42\u3002<\/strong><br><\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP4.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"942\" height=\"671\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/HTTP4.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-347\"  sizes=\"auto, (max-width: 942px) 100vw, 942px\" \/><\/div><\/figure>\n\n\n<h3><span style=\"color: #000000; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 14pt;\">HTTP\u8bf7\u6c42\u65b9\u6cd5<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6839\u636eHTTP\u6807\u51c6\uff0cHTTP\u8bf7\u6c42\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u8bf7\u6c42\u65b9\u6cd5\u3002<br>HTTP1.0\u5b9a\u4e49\u4e86\u4e09\u79cd\u8bf7\u6c42\u65b9\u6cd5\uff1aGET,POST\u548cHEAD\u65b9\u6cd5\u3002<br>HTTP1.1\u65b0\u589e\u4e86\u4e94\u79cd\u8bf7\u6c42\u65b9\u6cd5\uff1aOPTIONS,PUT,DELETE,TRACE\u548cCONNECT\u65b9\u6cd5\u3002<br><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">GET \u2014\u2014\u8bf7\u6c42\u6307\u5b9a\u7684\u9875\u9762\u4fe1\u606f\uff0c\u5e76\u8fd4\u56de\u5b9e\u4f53\u4e3b\u4f53\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">HEAD\u2014\u2014\u7c7b\u4f3c\u4e8eGET\u8bf7\u6c42\uff0c\u53ea\u4e0d\u8fc7\u8fd4\u56de\u7684\u54cd\u5e94\u4e2d\u6ca1\u6709\u5177\u4f53\u7684\u5185\u5bb9\uff0c\u7528\u4e8e\u83b7\u53d6\u62a5\u5934\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">POST\u2014\u2014\u5411\u5236\u5b9a\u8d44\u6e90\u63d0\u4ea4\u6570\u636e\u8fdb\u884c\u5904\u7406\u8bf7\u6c42\uff08\u4f8b\u5982\u63d0\u4ea4\u8868\u5355\u6216\u8005\u4e0a\u4f20\u6587\u4ef6\uff09\u3002\u6570\u636e\u88ab\u5305\u542b\u5728\u8bf7\u6c42\u4f53\u4e2d\u3002POST\u53ef\u80fd\u4f1a\u5bfc\u81f4\u65b0\u7684\u8d44\u6e90\u7684\u5efa\u7acb\u548c\/\u6216\u5df2\u6709\u8d44\u6e90\u7684\u4fee\u6539\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">PUT\u2014\u2014\u4ece\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u4f20\u9001\u7684\u6570\u636e\u53d6\u4ee3\u6307\u5b9a\u7684\u6587\u6863\u7684\u5185\u5bb9\u3002<br>DELETE\u2014\u2014\u8bf7\u6c42\u670d\u52a1\u5668\u5220\u9664\u6307\u5b9a\u7684\u9875\u9762\u3002<br>CONNECT\u2014\u2014HTTP\/1.1\u534f\u8bae\u4e2d\u9884\u7559\u7ed9\u80fd\u591f\u5c06\u8fde\u63a5\u6539\u4e3a\u7ba1\u9053\u65b9\u5f0f\u7684\u4ee3\u7406\u670d\u52a1\u5668\u3002<br>OPTIOINS\u2014\u2014\u5141\u8bb8\u5ba2\u6237\u7aef\u67e5\u770b\u670d\u52a1\u5668\u7684\u6027\u80fd\u3002<br>TRACE\u2014\u2014\u56de\u663e\u670d\u52a1\u5668\u6536\u5230\u7684\u8bf7\u6c42\uff0c\u4e3b\u8981\u7528\u4e8e\u6d4b\u8bd5\u6216\u8bca\u65ad\u3002<\/span><\/p>\n<h3><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 14pt;\">HTTP\u5de5\u4f5c\u539f\u7406<\/span><\/h3>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">HTTP\u8bf7\u6c42\/\u54cd\u5e94\u6b65\u9aa4\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5ba2\u6237\u7aef\u8fde\u63a5\u5230Web\u670d\u52a1\u5668<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e00\u4e2aHTTP\u5ba2\u6237\u7aef\uff0c\u901a\u5e38\u662f\u6d4f\u89c8\u5668\uff0c\u4e0eWeb\u670d\u52a1\u5668\u7684HTTP\u7aef\u53e3\uff08\u9ed8\u8ba4\u4e3a80\uff09\u5efa\u7acb\u4e00\u4e2aTCP\u5957\u63a5\u5b57\u8fde\u63a5\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u53d1\u9001HTTP\u8bf7\u6c42<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u901a\u8fc7TCP\u5957\u63a5\u5b57\uff0c\u5ba2\u6237\u7aef\u5411Web\u670d\u52a1\u5668\u53d1\u9001\u4e00\u4e2a\u6587\u672c\u7684\u8bf7\u6c42\u62a5\u6587\uff0c\u4e00\u4e2a\u8bf7\u6c42\u62a5\u6587\u7531\u8bf7\u6c42\u884c\u3001\u8bf7\u6c42\u5934\u90e8\u3001\u7a7a\u884c\u548c\u8bf7\u6c42\u6570\u636e4\u90e8\u5206\u7ec4\u6210\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u670d\u52a1\u5668\u63a5\u53d7\u8bf7\u6c42\u5e76\u8fd4\u56deHTTP\u54cd\u5e94<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">Web\u670d\u52a1\u5668\u89e3\u6790\u8bf7\u6c42\uff0c\u5b9a\u4f4d\u8bf7\u6c42\u8d44\u6e90\u3002\u670d\u52a1\u5668\u5c06\u8d44\u6e90\u526f\u672c\u5199\u5230TCP\u5957\u63a5\u5b57\uff0c\u7531\u5ba2\u6237\u7aef\u8bfb\u53d6\u3002\u4e00\u4e2a\u54cd\u5e94\u7531\u72b6\u6001\u884c\u3001\u54cd\u5e94\u5934\u90e8\u3001\u7a7a\u884c\u548c\u54cd\u5e94\u6570\u636e4\u90e8\u5206\u7ec4\u6210\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u91ca\u653eTCP\u8fde\u63a5<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', 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