{"id":656,"date":"2023-04-16T17:29:45","date_gmt":"2023-04-16T09:29:45","guid":{"rendered":"http:\/\/120.55.184.7\/?p=656"},"modified":"2025-04-19T00:38:56","modified_gmt":"2025-04-18T16:38:56","slug":"kcp-%e5%9f%ba%e4%ba%8eudp%e7%9a%84%e5%8f%af%e9%9d%a0%e4%bc%a0%e8%be%93%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/beijian99.top\/?p=656","title":{"rendered":"KCP &#8211; \u57fa\u4e8eUDP\u7684\u53ef\u9760\u4f20\u8f93\u534f\u8bae"},"content":{"rendered":"\n<p>KCP\uff08Kernel Control Protocol\uff09\u662f\u4e00\u79cd\u57fa\u4e8eUDP\u7684\u53ef\u9760\u4f20\u8f93\u534f\u8bae\uff0c\u65e8\u5728\u901a\u8fc7\u4f18\u5316\u91cd\u4f20\u673a\u5236\u548c\u6d41\u91cf\u63a7\u5236\u5b9e\u73b0\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u541e\u5410\u91cf\u7684\u6570\u636e\u4f20\u8f93\u3002\u4ee5\u4e0b\u4ece\u6838\u5fc3\u7279\u6027\u3001\u6280\u672f\u5b9e\u73b0\u3001\u5e94\u7528\u573a\u666f\u7b49\u7ef4\u5ea6\u8be6\u7ec6\u4ecb\u7ecd\uff1a<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e00\u3001\u6838\u5fc3\u7279\u6027<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5feb\u901f\u91cd\u4f20\u673a\u5236<\/strong><br>KCP\u5728\u68c0\u6d4b\u5230\u4e22\u5305\u65f6\u65e0\u9700\u7b49\u5f85\u8d85\u65f6\uff0c\u800c\u662f\u901a\u8fc7\u7edf\u8ba1\u8fde\u7eedACK\u8df3\u8fc7\u7684\u6b21\u6570\uff08\u5982\u6536\u52303\u6b21\u5197\u4f59ACK\uff09\u7acb\u5373\u89e6\u53d1\u91cd\u4f20\u3002\u76f8\u6bd4TCP\u7684RTO\uff08\u91cd\u4f20\u8d85\u65f6\u65f6\u95f4\uff09\u7ffb\u500d\u7b56\u7565\uff0cKCP\u4ec5\u5c06RTO\u4e58\u4ee51.5\uff0c\u663e\u8457\u964d\u4f4e\u5ef6\u8fdf\u3002<\/li>\n\n\n\n<li><strong>\u9009\u62e9\u6027\u91cd\u4f20<\/strong><br>TCP\u4e22\u5305\u65f6\u4f1a\u91cd\u4f20\u540e\u7eed\u6240\u6709\u6570\u636e\u5305\uff0c\u800cKCP\u4ec5\u91cd\u4f20\u5b9e\u9645\u4e22\u5931\u7684\u5305\uff0c\u51cf\u5c11\u5e26\u5bbd\u6d6a\u8d39\u3002\u63a5\u6536\u7aef\u901a\u8fc7\u6ed1\u52a8\u7a97\u53e3\u548c\u5e8f\u53f7\u673a\u5236\uff08<code>sn<\/code>\u3001<code>una<\/code>\u5b57\u6bb5\uff09\u5b9e\u73b0\u6570\u636e\u5305\u7684\u6709\u5e8f\u91cd\u7ec4\u3002<\/li>\n\n\n\n<li><strong>\u975e\u5ef6\u8fdfACK<\/strong><br>TCP\u4e3a\u63d0\u9ad8\u5e26\u5bbd\u5229\u7528\u7387\u4f1a\u5ef6\u8fdf\u53d1\u9001ACK\uff0c\u5bfc\u81f4RTT\uff08\u5f80\u8fd4\u65f6\u95f4\uff09\u8ba1\u7b97\u4e0d\u51c6\u786e\u3002KCP\u5141\u8bb8\u7acb\u5373\u53d1\u9001ACK\uff0c\u52a0\u901f\u4e22\u5305\u5224\u65ad\u3002<\/li>\n\n\n\n<li><strong>\u6df7\u5408\u6d41\u63a7\u6a21\u5f0f<\/strong><br>\u6b63\u5e38\u6a21\u5f0f\u4e0bKCP\u91c7\u7528\u7c7b\u4f3cTCP\u7684\u516c\u5e73\u9000\u8ba9\uff08\u62e5\u585e\u63a7\u5236\u3001\u6162\u542f\u52a8\uff09\uff0c\u4f46\u5728\u5b9e\u65f6\u6027\u8981\u6c42\u9ad8\u7684\u573a\u666f\u53ef\u5173\u95ed\u62e5\u585e\u63a7\u5236\uff0c\u4f18\u5148\u4fdd\u8bc1\u6d41\u901f\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e8c\u3001\u6280\u672f\u5b9e\u73b0<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u534f\u8bae\u7ed3\u6784<\/strong><br>KCP\u6570\u636e\u5305\u5934\u90e8\u5305\u542b\u5173\u952e\u5b57\u6bb5\uff1a<br>\u2022 <code>conv<\/code>\uff1a\u4f1a\u8bdd\u6807\u8bc6\u7b26\uff0c\u786e\u4fdd\u53cc\u65b9\u901a\u4fe1\u4e00\u81f4<br>\u2022 <code>cmd<\/code>\uff1a\u6307\u4ee4\u7c7b\u578b\uff08\u5982ACK\u3001\u6570\u636e\u63a8\u9001\uff09<br>\u2022 <code>sn<\/code>\uff1a\u5e8f\u5217\u53f7\uff0c\u7528\u4e8e\u6392\u5e8f\u548c\u91cd\u4f20<br>\u2022 <code>wnd<\/code>\uff1a\u63a5\u6536\u7a97\u53e3\u5927\u5c0f\uff0c\u63a7\u5236\u6d41\u91cf<\/li>\n\n\n\n<li><strong>\u786e\u5b9a\u6027\u8ba1\u7b97<\/strong><br>\u6240\u6709\u5ba2\u6237\u7aef\u9700\u4fdd\u8bc1\u76f8\u540c\u7684\u521d\u59cb\u72b6\u6001\u548c\u64cd\u4f5c\u5e8f\u5217\u5904\u7406\u903b\u8f91\uff0c\u907f\u514d\u56e0\u6d6e\u70b9\u6570\u8fd0\u7b97\u6216\u968f\u673a\u79cd\u5b50\u5dee\u5f02\u5bfc\u81f4\u540c\u6b65\u95ee\u9898\u3002<\/li>\n\n\n\n<li><strong>\u4e0eUDP\u96c6\u6210<\/strong><br>KCP\u672c\u8eab\u4e0d\u5904\u7406\u5e95\u5c42\u4f20\u8f93\uff0c\u9700\u7528\u6237\u5b9e\u73b0UDP\u6536\u53d1\u903b\u8f91\u3002\u4f8b\u5982\u5728Go\u4e2d\u901a\u8fc7<code>kcp-go<\/code>\u5e93\u5c01\u88c5\uff0c\u652f\u6301FEC\uff08\u524d\u5411\u7ea0\u9519\uff09\u548c\u52a0\u5bc6\uff08AES\u3001Salsa20\uff09\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e09\u3001\u5e94\u7528\u573a\u666f<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b9e\u65f6\u6e38\u620f<\/strong><br>MOBA\u3001FPS\u7b49\u5bf9\u5ef6\u8fdf\u654f\u611f\u7684\u6e38\u620f\u91c7\u7528KCP\uff0c\u5982\u300a\u738b\u8005\u8363\u8000\u300b\u901a\u8fc7KCP\u964d\u4f4e\u64cd\u4f5c\u5ef6\u8fdf\u81f330-50ms\u3002<\/li>\n\n\n\n<li><strong>\u89c6\u9891\u76f4\u64ad\u4e0e\u901a\u4fe1<\/strong><br>\u7f51\u6613\u4e91\u97f3\u4e50\u76f4\u64ad\u4f7f\u7528KCP\u51cf\u5c11\u5361\u987f\uff0c\u4fdd\u969c\u5b9e\u65f6\u97f3\u753b\u540c\u6b65\u3002<\/li>\n\n\n\n<li><strong>\u7269\u8054\u7f51\uff08IoT\uff09<\/strong><br>\u5c0f\u7c73IoT\u8bbe\u5907\u5229\u7528KCP\u5728\u5f31\u7f51\u73af\u5883\u4e0b\u4fdd\u6301\u7a33\u5b9a\u8fde\u63a5\uff0c\u964d\u4f4e\u6570\u636e\u4f20\u8f93\u5ef6\u8fdf\u3002<\/li>\n\n\n\n<li><strong>\u7f51\u7edc\u52a0\u901f\u5de5\u5177<\/strong><br>Shadowsocks\u7684KCP\u53d8\u4f53\u4f18\u5316\u8de8\u56fd\u7f51\u7edc\u4f20\u8f93\uff0c\u63d0\u5347\u4ee3\u7406\u901f\u5ea6\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u56db\u3001\u6027\u80fd\u4f18\u5316\u5efa\u8bae<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u53c2\u6570\u8c03\u4f18<\/strong><br>\u2022 <code>nodelay<\/code>\uff1a\u542f\u7528\u5feb\u901f\u6a21\u5f0f\uff08\u7acb\u5373\u53d1\u9001\u6570\u636e\uff09<br>\u2022 <code>interval<\/code>\uff1a\u8c03\u6574\u5237\u65b0\u95f4\u9694\uff08\u9ed8\u8ba420ms\uff0c\u53ef\u7f29\u77ed\u81f310ms\uff09<br>\u2022 <code>resend<\/code>\uff1a\u8bbe\u7f6e\u5feb\u901f\u91cd\u4f20\u9608\u503c\uff08\u59822\u6b21\u5197\u4f59ACK\u89e6\u53d1\uff09<\/li>\n\n\n\n<li><strong>\u5e26\u5bbd\u4e0e\u5ef6\u8fdf\u6743\u8861<\/strong><br>KCP\u901a\u5e38\u6bd4TCP\u591a\u6d88\u801710%-20%\u5e26\u5bbd\uff0c\u4f46\u5e73\u5747\u5ef6\u8fdf\u964d\u4f4e30%-40%\uff0c\u6700\u5927\u5ef6\u8fdf\u51cf\u5c113\u500d\u3002<\/li>\n\n\n\n<li><strong>\u524d\u5411\u7ea0\u9519\uff08FEC\uff09<\/strong><br>\u901a\u8fc7Reed-Solomon\u7f16\u7801\u6dfb\u52a0\u5197\u4f59\u5305\uff0c\u5141\u8bb8\u63a5\u6536\u7aef\u5728\u4e22\u5305\u65f6\u6062\u590d\u6570\u636e\uff0c\u51cf\u5c11\u91cd\u4f20\u9700\u6c42\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e94\u3001\u4f18\u7f3a\u70b9\u5bf9\u6bd4<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th><strong>\u7ef4\u5ea6<\/strong><\/th><th><strong>KCP<\/strong><\/th><th><strong>TCP<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>\u5ef6\u8fdf<\/strong><\/td><td>\u4f4e\uff08\u5feb\u901f\u91cd\u4f20\u3001\u975e\u5ef6\u8fdfACK\uff09<\/td><td>\u9ad8\uff08\u4f9d\u8d56\u8d85\u65f6\u91cd\u4f20\u3001\u5ef6\u8fdfACK\uff09<\/td><\/tr><tr><td><strong>\u5e26\u5bbd\u6548\u7387<\/strong><\/td><td>\u8f83\u4f4e\uff08\u5197\u4f59ACK\u3001\u9009\u62e9\u6027\u91cd\u4f20\uff09<\/td><td>\u9ad8\uff08\u62e5\u585e\u63a7\u5236\u4f18\u5316\uff09<\/td><\/tr><tr><td><strong>\u9002\u7528\u573a\u666f<\/strong><\/td><td>\u5b9e\u65f6\u6e38\u620f\u3001\u76f4\u64ad\u3001\u5f31\u7f51\u73af\u5883<\/td><td>\u6587\u4ef6\u4f20\u8f93\u3001\u7f51\u9875\u6d4f\u89c8<\/td><\/tr><tr><td><strong>\u5f00\u53d1\u590d\u6742\u5ea6<\/strong><\/td><td>\u9700\u5904\u7406UDP NAT\u7a7f\u900f\u3001\u81ea\u5b9a\u4e49\u6d41\u63a7<\/td><td>\u7cfb\u7edf\u5185\u7f6e\uff0c\u5f00\u7bb1\u5373\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u516d\u3001\u5f00\u6e90\u5b9e\u73b0<\/strong><\/h3>\n\n\n\n<p><a href=\"https:\/\/github.com\/xtaci\/kcp-go\">xtaci\/kcp-go: A Crypto-Secure Reliable-UDP Library for golang with FEC<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>KCP\uff08Kernel Control Protocol\uff09\u662f\u4e00\u79cd\u57fa\u4e8eUDP\u7684\u53ef\u9760\u4f20\u8f93\u534f\u8bae\uff0c\u65e8\u5728\u901a\u8fc7\u4f18\u5316\u91cd\u4f20\u673a\u5236\u548c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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