{"id":14140,"date":"2025-04-18T20:57:48","date_gmt":"2025-04-18T12:57:48","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/14140.html"},"modified":"2025-04-18T20:57:48","modified_gmt":"2025-04-18T12:57:48","slug":"quic-go%e5%bc%80%e6%ba%90%e9%a1%b9%e7%9b%ae%ef%bc%9ago%e8%af%ad%e8%a8%80%e5%ae%9e%e7%8e%b0%e7%9a%84quic%e5%8d%8f%e8%ae%ae%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/14140.html","title":{"rendered":"quic-go\u5f00\u6e90\u9879\u76ee\uff1aGo\u8bed\u8a00\u5b9e\u73b0\u7684QUIC\u534f\u8bae\u670d\u52a1\u5668"},"content":{"rendered":"<p>  \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90&#xff0c;\u70b9\u51fb\u83b7\u53d6  <img decoding=\"async\" alt=\"menu-r.4af5f7ec.gif\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418125747-68024c4bdeaf2.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom\" \/><\/p>\n<p> \u7b80\u4ecb&#xff1a;\u8be5\u9879\u76ee\u662f\u4e00\u4e2a\u4f7f\u7528Go\u8bed\u8a00\u5b9e\u73b0\u7684QUIC&#xff08;Quick UDP Internet Connections&#xff09;\u534f\u8bae\u670d\u52a1\u5668\u7684\u5f00\u6e90\u9879\u76ee&#xff0c;\u7531Lucas Clemente\u5f00\u53d1\u3002QUIC\u662f\u4e00\u79cd\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u5b89\u5168\u6027\u7684\u7f51\u7edc\u4f20\u8f93\u534f\u8bae&#xff0c;\u7531Google\u8bbe\u8ba1&#xff0c;\u65e8\u5728\u66ff\u4ee3TCP\u5e76\u4f18\u5316HTTP\/2\u6027\u80fd&#xff0c;\u7279\u522b\u662f\u5728\u79fb\u52a8\u7f51\u7edc\u4e2d\u3002\u5b83\u5229\u7528Go\u8bed\u8a00\u5728\u5e76\u53d1\u5904\u7406\u548c\u7f51\u7edc\u7f16\u7a0b\u65b9\u9762\u7684\u4f18\u52bf&#xff0c;\u5b9e\u73b0\u4e86\u5feb\u901f\u8fde\u63a5\u3001\u51cf\u5c11\u91cd\u4f20\u3001\u591a\u8def\u590d\u7528\u3001\u7248\u672c\u534f\u5546\u548c\u5b89\u5168\u6539\u8fdb\u7b49\u7279\u70b9\u3002\u9879\u76ee\u6838\u5fc3\u5305\u62ecQUIC\u670d\u52a1\u5668\u903b\u8f91\u3001\u7b80\u5355\u7684\u5ba2\u6237\u7aef\u63a5\u53e3\u3001HTTP\/3\u652f\u6301\u3001\u6d4b\u8bd5\u7528\u4f8b\u53ca\u793a\u4f8b\u4ee3\u7801\u548c\u8be6\u5c3d\u6587\u6863&#xff0c;\u65e8\u5728\u63d0\u4f9b\u9ad8\u6027\u80fd\u548c\u8f7b\u91cf\u7ea7\u7684QUIC\u534f\u8bae\u5b9e\u73b0\u3002 <img decoding=\"async\" alt=\"\u5f00\u6e90\u9879\u76ee-lucas-clemente-quic-go.zip\" src=\"https:\/\/opengraph.githubassets.com\/7eef53716ed75c68dc9b8374711c01d8fca775f535c629f94caa408e1f2bce27\/google\/proto-quic\" \/><\/p>\n<h2> 1. Go\u8bed\u8a00\u5b9e\u73b0\u7684QUIC\u534f\u8bae\u670d\u52a1\u5668 <\/h2>\n<p> \u5728\u5f53\u4eca\u4e92\u8054\u7f51\u5e94\u7528\u4e2d&#xff0c;\u5ef6\u8fdf\u5df2\u6210\u4e3a\u7528\u6237\u4f53\u9a8c\u7684\u5173\u952e\u56e0\u7d20\u4e4b\u4e00\u3002Google\u5f00\u53d1\u7684QUIC\u534f\u8bae\u4ee5\u5176\u5feb\u901f\u7684\u8fde\u63a5\u5efa\u7acb\u548c\u4f4e\u5ef6\u8fdf\u7279\u6027\u53d7\u5230\u5e7f\u6cdb\u5173\u6ce8\u3002\u672c\u7ae0\u5c06\u63a2\u8ba8\u5982\u4f55\u4f7f\u7528Go\u8bed\u8a00\u5b9e\u73b0\u4e00\u4e2aQUIC\u534f\u8bae\u670d\u52a1\u5668&#xff0c;\u4ece\u800c\u63d0\u5347\u7f51\u7edc\u901a\u4fe1\u7684\u6548\u7387\u548c\u53ef\u9760\u6027\u3002 <\/p>\n<h3> 1.1 QUIC\u534f\u8bae\u6982\u8ff0 <\/h3>\n<p> QUIC&#xff08;Quick UDP Internet Connections&#xff09;\u662f\u4e00\u79cd\u57fa\u4e8eUDP\u7684\u591a\u8def\u590d\u7528\u548c\u5b89\u5168\u4f20\u8f93\u534f\u8bae&#xff0c;\u65e8\u5728\u51cf\u5c11\u7f51\u7edc\u5ef6\u8fdf&#xff0c;\u5e76\u5728\u5e94\u7528\u5c42\u5b9e\u73b0\u7c7b\u4f3cTCP\u7684\u53ef\u9760\u4f20\u8f93\u3002QUIC\u534f\u8bae\u901a\u8fc7\u4e00\u7cfb\u5217\u4f18\u5316&#xff0c;\u59820-RTT\u63e1\u624b\u548c\u5934\u538b\u7f29&#xff0c;\u6765\u5b9e\u73b0\u66f4\u5feb\u7684\u8fde\u63a5\u5efa\u7acb\u3002 <\/p>\n<h3> 1.2 Go\u8bed\u8a00\u5728QUIC\u5b9e\u73b0\u4e2d\u7684\u4f18\u52bf <\/h3>\n<p> Go\u8bed\u8a00\u4ee5\u5176\u7b80\u6d01\u7684\u8bed\u6cd5\u548c\u9ad8\u6548\u7684\u5e76\u53d1\u5904\u7406\u80fd\u529b&#xff0c;\u5728\u7f51\u7edc\u7f16\u7a0b\u9886\u57df\u5e7f\u53d7\u6b22\u8fce\u3002\u5229\u7528Go\u7684  quic-go  \u5e93&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0QUIC\u534f\u8bae\u670d\u52a1\u5668&#xff0c;\u540c\u65f6\u8fd8\u80fd\u4eab\u53d7\u5230Go\u5e26\u6765\u7684\u6027\u80fd\u4f18\u5316\u548c\u5feb\u901f\u5f00\u53d1\u7684\u4f18\u52bf\u3002 <\/p>\n<h3> 1.3 \u4e00\u4e2aQUIC\u670d\u52a1\u5668\u7684\u57fa\u672c\u6846\u67b6 <\/h3>\n<p> \u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528Go\u8bed\u8a00\u5b9e\u73b0QUIC\u670d\u52a1\u5668\u7684\u7b80\u5316\u6846\u67b6\u793a\u4f8b\u4ee3\u7801&#xff1a; <\/p>\n<p>package main<\/p>\n<p>import (<br \/>\n    &#034;net&#034;<br \/>\n    &#034;***\/lucas-clemente\/quic-go&#034;<br \/>\n)<\/p>\n<p>func main() {<br \/>\n    lis, err :&#061; net.Listen(&#034;udp&#034;, &#034;*.*.*.*:443&#034;)<br \/>\n    if err !&#061; nil {<br \/>\n        panic(err)<br \/>\n    }<br \/>\n    defer lis.Close()<\/p>\n<p>    for {<br \/>\n        conn, err :&#061; lis.Accept()<br \/>\n        if err !&#061; nil {<br \/>\n            log.Printf(&#034;Failed to accept: %s&#034;, err)<br \/>\n            continue<br \/>\n        }<\/p>\n<p>        go handleQUICConnection(conn)<br \/>\n    }<br \/>\n}<\/p>\n<p>func handleQUICConnection(conn quic.Connection) {<br \/>\n    \/\/ \u8fd9\u91cc\u53ef\u4ee5\u5b9e\u73b0\u8fde\u63a5\u7684\u5177\u4f53\u5904\u7406\u903b\u8f91<br \/>\n}<\/p>\n<p> \u6b64\u4ee3\u7801\u6bb5\u6f14\u793a\u4e86\u5982\u4f55\u76d1\u542cUDP\u7aef\u53e3&#xff0c;\u5e76\u63a5\u53d7\u65b0\u7684QUIC\u8fde\u63a5\u3002\u6838\u5fc3\u5904\u7406\u903b\u8f91\u5728  handleQUICConnection  \u51fd\u6570\u4e2d\u5b9e\u73b0&#xff0c;\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u586b\u5145\u5904\u7406\u4ee3\u7801&#xff0c;\u4ee5\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u4ea4\u4e92\u3002\u5728\u540e\u7eed\u7ae0\u8282\u4e2d&#xff0c;\u6211\u4eec\u5c06\u8fdb\u4e00\u6b65\u6df1\u5165\u63a2\u8ba8QUIC\u7684\u9ad8\u7ea7\u7279\u6027\u53ca\u5176\u5728Go\u4e2d\u7684\u5e94\u7528\u3002 <\/p>\n<h2> 2. \u5feb\u901f\u8fde\u63a5\u5efa\u7acb\u4e0e0-RTT\u63e1\u624b <\/h2>\n<h3> 2.1 QUIC\u8fde\u63a5\u5efa\u7acb\u7684\u539f\u7406\u5206\u6790 <\/h3>\n<h4> 2.1.1 \u5bf9\u6bd4TCP\u4e09\u6b21\u63e1\u624b\u7684\u4f18\u52bf <\/h4>\n<p> QUIC\u534f\u8bae\u7684\u4e00\u4e2a\u663e\u8457\u7279\u70b9\u662f\u80fd\u591f\u5b9e\u73b0\u6bd4\u4f20\u7edfTCP\u66f4\u5feb\u901f\u7684\u8fde\u63a5\u5efa\u7acb\u3002\u8fd9\u79cd\u4f18\u52bf\u4e3b\u8981\u6e90\u81eaQUIC\u653e\u5f03\u4f7f\u7528TCP\u4e09\u6b21\u63e1\u624b&#xff0c;\u8f6c\u800c\u4f7f\u7528\u57fa\u4e8eUDP\u7684\u8fde\u63a5\u5efa\u7acb\u673a\u5236&#xff0c;\u6765\u51cf\u5c11\u521d\u59cb\u8fde\u63a5\u5ef6\u8fdf\u3002 <\/p>\n<p> \u5728TCP\u4e2d&#xff0c;\u4e09\u6b21\u63e1\u624b\u662f\u5efa\u7acb\u8fde\u63a5\u7684\u5fc5\u8981\u6b65\u9aa4&#xff0c;\u5373\u5ba2\u6237\u7aef\u53d1\u9001SYN\u5305\u3001\u670d\u52a1\u7aef\u54cd\u5e94SYN-ACK\u5305&#xff0c;\u6700\u7ec8\u5ba2\u6237\u7aef\u518d\u6b21\u53d1\u9001ACK\u5305\u4ee5\u786e\u8ba4\u3002\u8fd9\u5bfc\u81f4\u81f3\u5c11\u9700\u8981\u4e00\u4e2a\u5f80\u8fd4\u65f6\u95f4&#xff08;RTT&#xff09;\u624d\u80fd\u5b8c\u6210\u8fde\u63a5\u5efa\u7acb\u3002QUIC\u5728\u6b64\u57fa\u7840\u4e0a\u7b80\u5316\u4e86\u63e1\u624b\u6d41\u7a0b\u3002QUIC\u4e0d\u4ec5\u6d88\u9664\u4e86TCP\u4e2d\u7684\u4e09\u6b21\u63e1\u624b\u65f6\u95f4\u5f00\u9500&#xff0c;\u8fd8\u5f15\u5165\u4e860-RTT\u91cd\u64ad\u653b\u51fb\u9632\u62a4\u673a\u5236\u3002\u5b83\u5141\u8bb8\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b&#xff0c;\u6570\u636e\u5728\u7b2c\u4e00\u6b21\u5f80\u8fd4\u4e2d\u5c31\u80fd\u53d1\u9001&#xff0c;\u4e5f\u5c31\u662f\u6240\u8c13\u76840-RTT\u63e1\u624b&#xff0c;\u6781\u5927\u63d0\u5347\u4e86\u8fde\u63a5\u6548\u7387\u3002 <\/p>\n<h4> 2.1.2 0-RTT\u63e1\u624b\u7684\u6d41\u7a0b\u548c\u4f18\u5316 <\/h4>\n<p> QUIC\u534f\u8bae\u5b9e\u73b00-RTT\u63e1\u624b\u7684\u6838\u5fc3\u5728\u4e8e\u4f7f\u7528\u4e86\u524d\u4e00\u6b21\u4f1a\u8bdd\u7684\u5b89\u5168\u4e0a\u4e0b\u6587\u6765\u5efa\u7acb\u65b0\u7684\u8fde\u63a5&#xff0c;\u5b9e\u73b0\u4e86\u5feb\u901f\u63e1\u624b\u3002\u8fd9\u6837&#xff0c;\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u6709\u8fc7\u4e00\u6b21\u8fde\u63a5\u540e&#xff0c;\u4e0b\u4e00\u6b21\u8fde\u63a5\u65f6&#xff0c;\u5ba2\u6237\u7aef\u53ef\u4ee5\u7acb\u5373\u53d1\u9001\u52a0\u5bc6\u6570\u636e&#xff0c;\u800c\u65e0\u9700\u7b49\u5f85\u670d\u52a1\u5668\u7684\u786e\u8ba4\u3002 <\/p>\n<p> \u7136\u800c&#xff0c;0-RTT\u63e1\u624b\u867d\u7136\u53ef\u4ee5\u6781\u5927\u63d0\u5347\u7528\u6237\u4f53\u9a8c&#xff0c;\u4f46\u4e5f\u5f15\u5165\u4e86\u5b89\u5168\u98ce\u9669\u3002QUIC\u534f\u8bae\u901a\u8fc7\u591a\u79cd\u4f18\u5316\u624b\u6bb5\u6765\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898&#xff1a; <\/p>\n<ul>\n<li> \u5ba2\u6237\u7aef\u5728\u53d1\u90010-RTT\u6570\u636e\u524d&#xff0c;\u5148\u786e\u8ba4\u670d\u52a1\u5668\u662f\u5426\u613f\u610f\u63a5\u53d70-RTT\u6570\u636e\u3002 <\/li>\n<li> \u670d\u52a1\u5668\u7aef\u901a\u8fc7\u68c0\u67e50-RTT\u6570\u636e\u5305\u7684\u5b8c\u6574\u6027\u6765\u9632\u6b62\u91cd\u653e\u653b\u51fb\u3002 <\/li>\n<li> \u670d\u52a1\u5668\u53ef\u914d\u7f6e\u4e3a\u4e0d\u63a5\u53d70-RTT\u6570\u636e&#xff0c;\u4ee5\u51cf\u5c11\u5b89\u5168\u98ce\u9669\u3002 <\/li>\n<\/ul>\n<p> \u901a\u8fc7\u8fd9\u6837\u7684\u8bbe\u8ba1&#xff0c;QUIC\u65e2\u4fdd\u8bc1\u4e86\u8fde\u63a5\u7684\u5feb\u901f\u5efa\u7acb&#xff0c;\u540c\u65f6\u4e5f\u8003\u8651\u5230\u4e86\u5b89\u5168\u56e0\u7d20\u3002 <\/p>\n<h3> 2.2 \u5b9e\u8df5\u4e2d\u7684\u5feb\u901f\u63e1\u624b\u6280\u672f <\/h3>\n<h4> 2.2.1 0-RTT\u63e1\u624b\u5728Go\u4e2d\u7684\u5b9e\u73b0 <\/h4>\n<p> \u5728Go\u8bed\u8a00\u4e2d&#xff0c;QUIC\u7684\u5b9e\u73b0\u4e3b\u8981\u901a\u8fc7  ***\/x\/net\/quic  \u8fd9\u4e2a\u5305\u3002\u5728\u8be5\u5305\u4e2d&#xff0c;0-RTT\u63e1\u624b\u7684\u5b9e\u73b0\u6d89\u53ca\u5230\u591a\u4e2a\u7ec4\u4ef6&#xff0c;\u5176\u4e2d\u5305\u62ec\u4e86\u52a0\u5bc6\u63e1\u624b\u72b6\u6001\u7684\u4fdd\u5b58\u4e0e\u6062\u590d\u3001\u6570\u636e\u5305\u7684\u6b63\u786e\u6807\u8bb0\u548c\u8def\u7531\u7b49\u3002 <\/p>\n<p> \u8981\u5b9e\u73b00-RTT\u63e1\u624b&#xff0c;\u9996\u5148\u9700\u8981\u5728\u670d\u52a1\u5668\u7aef\u9884\u5148\u4fdd\u5b58\u597d\u4e4b\u524d\u4f1a\u8bdd\u7684\u52a0\u5bc6\u72b6\u6001\u3002\u63a5\u7740&#xff0c;\u5728\u5ba2\u6237\u7aef&#xff0c;\u5f00\u53d1\u8005\u9700\u8981\u5728\u8fde\u63a5\u65f6\u6307\u5b9a\u4f7f\u75280-RTT\u6a21\u5f0f&#xff0c;\u8fd9\u901a\u5e38\u662f\u901a\u8fc7\u8bbe\u7f6e\u8fde\u63a5\u9009\u9879\u6765\u5b9e\u73b0\u7684\u3002\u4e00\u65e6\u670d\u52a1\u5668\u9a8c\u8bc1\u4e86\u5ba2\u6237\u7aef\u76840-RTT\u6570\u636e&#xff0c;\u5c31\u4f1a\u63a5\u53d7\u5e76\u5904\u7406\u8fd9\u4e9b\u6570\u636e\u3002 <\/p>\n<h4> 2.2.2 \u4f18\u5316\u5b9e\u8df5&#xff1a;\u51cf\u5c11\u63e1\u624b\u65f6\u5ef6\u548c\u63d0\u9ad8\u6548\u7387 <\/h4>\n<p> \u8981\u4f18\u5316QUIC\u63e1\u624b\u8fc7\u7a0b\u5e76\u51cf\u5c11\u65f6\u5ef6&#xff0c;\u6211\u4eec\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u79cd\u7b56\u7565&#xff1a; <\/p>\n<ul>\n<li>  \u72b6\u6001\u7f13\u5b58\u673a\u5236  &#xff1a;\u901a\u8fc7\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u7f13\u5b58\u52a0\u5bc6\u63e1\u624b\u72b6\u6001&#xff0c;\u53ef\u4ee5\u5728\u4e0b\u6b21\u63e1\u624b\u65f6\u91cd\u7528\u8fd9\u4e9b\u72b6\u6001&#xff0c;\u4ece\u800c\u52a0\u5feb\u63e1\u624b\u901f\u5ea6\u3002 <\/li>\n<li>  \u5408\u7406\u7684\u670d\u52a1\u5668\u914d\u7f6e  &#xff1a;\u670d\u52a1\u5668\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u8c03\u6574\u63a5\u53d70-RTT\u6570\u636e\u7684\u7b56\u7565&#xff0c;\u6bd4\u5982\u5728\u9ad8\u5b89\u5168\u6027\u9700\u6c42\u7684\u573a\u666f\u4e0b&#xff0c;\u53ef\u4ee5\u9009\u62e9\u4e0d\u63a5\u53d70-RTT\u6570\u636e&#xff0c;\u4ee5\u907f\u514d\u53ef\u80fd\u7684\u5b89\u5168\u98ce\u9669\u3002 <\/li>\n<li>  \u7f51\u7edc\u72b6\u51b5\u76d1\u63a7  &#xff1a;\u76d1\u63a7\u7f51\u7edc\u72b6\u51b5&#xff0c;\u5f53\u68c0\u6d4b\u5230\u7f51\u7edc\u8d28\u91cf\u826f\u597d\u65f6&#xff0c;\u53ef\u4ee5\u5c1d\u8bd5\u8fdb\u884c0-RTT\u63e1\u624b&#xff0c;\u4ee5\u51cf\u5c11\u63e1\u624b\u65f6\u5ef6\u3002 <\/li>\n<\/ul>\n<p> \u901a\u8fc7\u8fd9\u4e9b\u4f18\u5316\u624b\u6bb5&#xff0c;\u80fd\u591f\u5728\u4fdd\u8bc1\u5b89\u5168\u7684\u540c\u65f6&#xff0c;\u6709\u6548\u63d0\u5347QUIC\u63e1\u624b\u7684\u6548\u7387\u548c\u51cf\u5c11\u5ef6\u8fdf\u3002 <\/p>\n<h3> 2.3 0-RTT\u63e1\u624b\u6280\u672f\u5e94\u7528\u6848\u4f8b <\/h3>\n<h4> 2.3.1 \u5e94\u7528\u573a\u666f\u5206\u6790 <\/h4>\n<p> 0-RTT\u63e1\u624b\u6280\u672f\u4e3b\u8981\u9002\u7528\u4e8e\u9700\u8981\u5feb\u901f\u6062\u590d\u4f1a\u8bdd\u7684\u573a\u666f\u3002\u4f8b\u5982&#xff0c;\u5bf9\u4e8e\u6709\u5927\u91cf\u77ed\u8fde\u63a5\u7684Web\u670d\u52a1&#xff0c;\u5982\u641c\u7d22\u5f15\u64ce\u6216\u793e\u4ea4\u5a92\u4f53\u5e73\u53f0&#xff0c;0-RTT\u63e1\u624b\u80fd\u591f\u663e\u8457\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002\u6b64\u5916&#xff0c;\u5bf9\u4e8e\u79fb\u52a8\u5e94\u7528\u7684\u540e\u53f0\u670d\u52a1&#xff0c;\u51cf\u5c11\u63e1\u624b\u5ef6\u8fdf\u53ef\u4ee5\u8282\u7701\u7535\u91cf\u6d88\u8017&#xff0c;\u4ece\u800c\u5ef6\u957f\u7535\u6c60\u5bff\u547d\u3002 <\/p>\n<h4> 2.3.2 \u5e94\u7528\u6848\u4f8b <\/h4>\n<p> \u4e00\u4e2a\u5178\u578b\u7684\u6848\u4f8b\u662f&#xff0c;\u901a\u8fc7QUIC\u534f\u8bae\u548c0-RTT\u63e1\u624b&#xff0c;\u6d4f\u89c8\u5668\u5728\u7528\u6237\u6253\u5f00\u65b0\u6807\u7b7e\u9875\u65f6\u80fd\u66f4\u5feb\u5730\u4e0e\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5&#xff0c;\u8fdb\u800c\u52a0\u901f\u7f51\u9875\u7684\u52a0\u8f7d\u901f\u5ea6\u3002\u5728\u5177\u4f53\u5b9e\u73b0\u65f6&#xff0c;\u6d4f\u89c8\u5668\u53ef\u4ee5\u5728\u5173\u95ed\u5f53\u524d\u6807\u7b7e\u9875\u65f6\u4fdd\u7559\u4e00\u4e9b\u52a0\u5bc6\u72b6\u6001&#xff0c;\u5e76\u5728\u6253\u5f00\u65b0\u6807\u7b7e\u9875\u65f6\u5c1d\u8bd5\u4f7f\u7528\u8fd9\u4e9b\u72b6\u6001\u8fdb\u884c0-RTT\u63e1\u624b\u3002 <\/p>\n<p> \u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d&#xff0c;\u670d\u52a1\u5668\u9700\u8981\u5bf9\u6240\u6709\u5ba2\u6237\u7aef\u76840-RTT\u6570\u636e\u5305\u8fdb\u884c\u9a8c\u8bc1&#xff0c;\u786e\u4fdd\u6ca1\u6709\u91cd\u653e\u653b\u51fb\u3002\u670d\u52a1\u5668\u7aef\u901a\u5e38\u9700\u8981\u8bbe\u7f6e\u4e00\u5b9a\u7684\u7b56\u7565&#xff0c;\u4f8b\u5982\u9650\u5236\u4f7f\u75280-RTT\u63e1\u624b\u7684\u6570\u636e\u7c7b\u578b\u548c\u5927\u5c0f&#xff0c;\u4ee5\u4fdd\u8bc1\u7f51\u7edc\u7684\u5b89\u5168\u6027\u548c\u7a33\u5b9a\u6027\u3002 <\/p>\n<h4> 2.3.3 \u4f18\u5316\u7b56\u7565\u548c\u5efa\u8bae <\/h4>\n<p> \u867d\u71360-RTT\u63e1\u624b\u5e26\u6765\u4e86\u6027\u80fd\u4e0a\u7684\u4f18\u52bf&#xff0c;\u4f46\u4e5f\u5f15\u5165\u4e86\u5b89\u5168\u98ce\u9669&#xff0c;\u6240\u4ee5\u5fc5\u987b\u5c0f\u5fc3\u8bbe\u8ba1\u548c\u5b9e\u73b00-RTT\u63e1\u624b\u7b56\u7565&#xff1a; <\/p>\n<ul>\n<li> \u670d\u52a1\u7aef\u5e94\u5b9e\u73b0\u91cd\u653e\u653b\u51fb\u9632\u5fa1\u673a\u5236&#xff0c;\u907f\u514d\u653b\u51fb\u8005\u6ee5\u75280-RTT\u6570\u636e\u5305\u3002 <\/li>\n<li> \u5728\u8fde\u63a5\u521d\u59cb\u5316\u65f6&#xff0c;\u8fdb\u884c\u4e25\u683c\u7684\u7248\u672c\u534f\u5546&#xff0c;\u786e\u4fdd\u4e24\u7aef\u7684QUIC\u534f\u8bae\u7248\u672c\u548c\u52a0\u5bc6\u7b97\u6cd5\u4fdd\u6301\u4e00\u81f4\u3002 <\/li>\n<li> \u5bf9\u4e8e\u5b89\u5168\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u6570\u636e&#xff0c;\u5e94\u8003\u8651\u4f7f\u7528\u5b8c\u6574\u76841-RTT\u63e1\u624b&#xff0c;\u5373\u4f7f\u4f1a\u589e\u52a0\u8fde\u63a5\u7684\u5ef6\u8fdf\u3002 <\/li>\n<\/ul>\n<p> \u7efc\u4e0a\u6240\u8ff0&#xff0c;\u5e94\u75280-RTT\u63e1\u624b\u6280\u672f\u65f6&#xff0c;\u9700\u8981\u5728\u6027\u80fd\u548c\u5b89\u5168\u6027\u4e4b\u95f4\u627e\u5230\u4e00\u4e2a\u5e73\u8861\u70b9&#xff0c;\u8fd9\u9700\u8981\u6839\u636e\u5b9e\u9645\u5e94\u7528\u573a\u666f\u8fdb\u884c\u7efc\u5408\u6743\u8861\u3002 <\/p>\n<h2> 3. \u51cf\u5c11\u91cd\u4f20\u4e0e\u6570\u636e\u5305\u5c42\u9762\u7684\u62e5\u585e\u63a7\u5236 <\/h2>\n<h3> 3.1 QUIC\u534f\u8bae\u7684\u91cd\u4f20\u673a\u5236 <\/h3>\n<h4> 3.1.1 \u57fa\u4e8eNACK\u7684\u91cd\u4f20\u7b56\u7565 <\/h4>\n<p> QUIC\u534f\u8bae\u4f7f\u7528NACK&#xff08;Negative Acknowledgement&#xff0c;\u5426\u5b9a\u786e\u8ba4&#xff09;\u673a\u5236\u6765\u5904\u7406\u4e22\u5931\u7684\u6570\u636e\u5305&#xff0c;\u5e76\u89e6\u53d1\u91cd\u4f20\u3002\u4e0e\u4f20\u7edf\u7684TCP\u534f\u8bae\u76f8\u6bd4&#xff0c;QUIC\u7684\u91cd\u4f20\u7b56\u7565\u66f4\u4e3a\u9ad8\u6548&#xff0c;\u539f\u56e0\u5728\u4e8e\u5b83\u80fd\u591f\u7cbe\u786e\u5730\u8bc6\u522b\u51fa\u54ea\u4e9b\u6570\u636e\u5305\u9700\u8981\u91cd\u4f20&#xff0c;\u800c\u4e0d\u662f\u50cfTCP\u90a3\u6837\u57fa\u4e8e\u7d2f\u8ba1\u786e\u8ba4&#xff08;ACK&#xff09;\u6765\u63a8\u65ad\u6570\u636e\u5305\u7684\u4e22\u5931\u3002QUIC\u901a\u8fc7NACK\u6d88\u606f\u6765\u544a\u77e5\u53d1\u9001\u7aef\u54ea\u4e9b\u6570\u636e\u5305\u6ca1\u6709\u88ab\u6536\u5230&#xff0c;\u56e0\u6b64\u53d1\u9001\u7aef\u53ef\u4ee5\u7acb\u5373\u91c7\u53d6\u884c\u52a8&#xff0c;\u9488\u5bf9\u6027\u5730\u91cd\u4f20\u4e22\u5931\u7684\u6570\u636e\u5305\u3002 <\/p>\n<h5> \u51cf\u5c11\u91cd\u4f20\u6b21\u6570 <\/h5>\n<p> NACK\u673a\u5236\u51cf\u5c11\u4e86\u4e0d\u5fc5\u8981\u7684\u91cd\u4f20\u6b21\u6570&#xff0c;\u56e0\u4e3a\u53d1\u9001\u7aef\u53ea\u5bf9\u6536\u5230NACK\u6807\u8bb0\u7684\u6570\u636e\u5305\u8fdb\u884c\u91cd\u4f20\u3002\u8fd9\u6837&#xff0c;\u5373\u4f7f\u662f\u5728\u4e22\u5305\u7387\u8f83\u9ad8\u7684\u7f51\u7edc\u73af\u5883\u4e2d&#xff0c;QUIC\u7684\u4f20\u8f93\u6548\u7387\u4ecd\u7136\u80fd\u591f\u4fdd\u6301\u8f83\u9ad8\u6c34\u5e73\u3002 <\/p>\n<h5> \u4ee3\u7801\u5b9e\u73b0 <\/h5>\n<p> \u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5316\u7684\u4ee3\u7801\u5757&#xff0c;\u6f14\u793a\u4e86\u5982\u4f55\u5728Go\u8bed\u8a00\u4e2d\u5b9e\u73b0\u57fa\u4e8eNACK\u7684\u91cd\u4f20\u7b56\u7565&#xff1a; <\/p>\n<p>package main<\/p>\n<p>import (<br \/>\n    &#034;time&#034;<br \/>\n)<\/p>\n<p>\/\/ \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u6570\u636e\u5305\u7ba1\u7406\u5668<br \/>\ntype PacketManager struct {<br \/>\n    \/\/ \u7528\u4e8e\u8bb0\u5f55\u6bcf\u4e2a\u6570\u636e\u5305\u7684\u53d1\u9001\u65f6\u95f4<br \/>\n    Packets map[uint64]time.Time<br \/>\n}<\/p>\n<p>\/\/ \u53d1\u9001\u6570\u636e\u5305\u65f6&#xff0c;\u8bb0\u5f55\u65f6\u95f4<br \/>\nfunc (p *PacketManager) SendPacket(seqNum uint64) {<br \/>\n    p.Packets[seqNum] &#061; time.Now()<br \/>\n}<\/p>\n<p>\/\/ \u63a5\u6536\u5230NACK\u65f6\u89e6\u53d1\u91cd\u4f20<br \/>\nfunc (p *PacketManager) RetransmitUponNACK(seqNum uint64) {<br \/>\n    if _, ok :&#061; p.Packets[seqNum]; ok {<br \/>\n        \/\/ \u91cd\u4f20\u4e22\u5931\u7684\u6570\u636e\u5305<br \/>\n        retransmitPacket(seqNum)<br \/>\n    }<br \/>\n}<\/p>\n<p>func retransmitPacket(seqNum uint64) {<br \/>\n    \/\/ \u91cd\u4f20\u903b\u8f91\u5b9e\u73b0<br \/>\n}<\/p>\n<p>func main() {<br \/>\n    \/\/ \u793a\u4f8b&#xff1a;\u53d1\u9001\u6570\u636e\u5305\u548c\u5904\u7406NACK<br \/>\n    packetManager :&#061; &amp;PacketManager{<br \/>\n        Packets: make(map[uint64]time.Time),<br \/>\n    }<\/p>\n<p>    packetManager.SendPacket(1) \/\/ \u5047\u8bbe\u6570\u636e\u5305\u5e8f\u53f7\u4e3a1<br \/>\n    \/\/ \u5047\u8bbe\u63a5\u6536\u5230NACK&#xff0c;\u9700\u8981\u91cd\u4f20\u5e8f\u53f7\u4e3a1\u7684\u6570\u636e\u5305<br \/>\n    packetManager.RetransmitUponNACK(1)<br \/>\n}<\/p>\n<h4> 3.1.2 \u91cd\u4f20\u673a\u5236\u7684\u6027\u80fd\u5f71\u54cd\u548c\u4f18\u5316\u65b9\u6cd5 <\/h4>\n<p> \u5728QUIC\u534f\u8bae\u4e2d&#xff0c;\u91cd\u4f20\u673a\u5236\u7684\u8bbe\u8ba1\u76f4\u63a5\u5f71\u54cd\u5230\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u548c\u53ef\u9760\u6027\u3002\u4e3a\u4e86\u63d0\u9ad8\u6027\u80fd&#xff0c;\u9700\u8981\u8003\u8651\u5230\u91cd\u4f20\u7b56\u7565\u7684\u5408\u7406\u6027\u548c\u54cd\u5e94\u6027\u3002 <\/p>\n<h5> \u91cd\u4f20\u7b56\u7565\u4f18\u5316 <\/h5>\n<p> \u4f18\u5316\u7684\u91cd\u4f20\u7b56\u7565\u5305\u62ec&#xff1a; <\/p>\n<ul>\n<li>  \u52a8\u6001\u8d85\u65f6\u8ba1\u7b97  &#xff1a;\u4f9d\u636eRTT&#xff08;\u5f80\u8fd4\u65f6\u95f4&#xff09;\u52a8\u6001\u8c03\u6574\u8d85\u65f6\u65f6\u95f4&#xff0c;\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u91cd\u4f20\u3002 <\/li>\n<li>  \u667a\u80fdNACK\u805a\u5408  &#xff1a;\u907f\u514d\u5728\u77ed\u65f6\u95f4\u5185\u53d1\u9001\u5927\u91cf\u7684NACK&#xff0c;\u800c\u662f\u5c06\u5b83\u4eec\u805a\u5408\u5728\u4e00\u8d77\u53d1\u9001\u3002 <\/li>\n<li>  \u591a\u7ea7\u91cd\u4f20\u7b56\u7565  &#xff1a;\u6839\u636e\u4e22\u5305\u60c5\u51b5\u7684\u4e25\u91cd\u7a0b\u5ea6&#xff0c;\u5b9e\u73b0\u4e0d\u540c\u7684\u91cd\u4f20\u54cd\u5e94\u673a\u5236\u3002 <\/li>\n<\/ul>\n<h5> \u6027\u80fd\u5f71\u54cd\u5206\u6790 <\/h5>\n<p> \u91cd\u4f20\u673a\u5236\u7684\u6027\u80fd\u5f71\u54cd\u5305\u62ec&#xff1a; <\/p>\n<ul>\n<li>  \u62e5\u585e\u7a97\u53e3\u8c03\u6574  &#xff1a;\u5728\u4e22\u5305\u53d1\u751f\u65f6&#xff0c;\u5408\u7406\u7684\u62e5\u585e\u7a97\u53e3\u8c03\u6574\u662f\u5173\u952e&#xff0c;\u5b83\u80fd\u6709\u6548\u63a7\u5236\u91cd\u4f20\u5bf9\u7f51\u7edc\u8d44\u6e90\u7684\u538b\u529b\u3002 <\/li>\n<li>  \u5feb\u901f\u91cd\u4f20\u4e0e\u5ef6\u8fdf\u91cd\u4f20  &#xff1a;\u5feb\u901f\u91cd\u4f20\u53ef\u4ee5\u63d0\u9ad8\u4f20\u8f93\u6548\u7387&#xff0c;\u800c\u5ef6\u8fdf\u91cd\u4f20\u5219\u53ef\u4ee5\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u91cd\u4f20\u3002 <\/li>\n<\/ul>\n<h5> \u4ee3\u7801\u4f18\u5316\u5b9e\u8df5 <\/h5>\n<p> \u4ee3\u7801\u5b9e\u73b0\u4e2d&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u91cd\u4f20\u89e6\u53d1\u7684\u6761\u4ef6\u548c\u91cd\u4f20\u95f4\u9694\u65f6\u95f4\u6765\u8fdb\u4e00\u6b65\u4f18\u5316\u91cd\u4f20\u7b56\u7565\u3002\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u4f7f\u7528\u5b9a\u65f6\u5668\u6765\u63a7\u5236\u91cd\u4f20\u65f6\u95f4&#xff0c;\u5e76\u4e14\u6839\u636e\u7f51\u7edc\u72b6\u51b5\u52a8\u6001\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\u3002 <\/p>\n<p>package main<\/p>\n<p>import (<br \/>\n    &#034;time&#034;<br \/>\n)<\/p>\n<p>\/\/ \u5b9a\u4e49\u91cd\u4f20\u95f4\u9694\u65f6\u95f4\u53c2\u6570<br \/>\nconst (<br \/>\n    InitialRetransmissionTimeout &#061; 500 * time.Millisecond<br \/>\n    MaxRetransmissionTimeout     &#061; 10 * time.Second<br \/>\n)<\/p>\n<p>\/\/ \u53d1\u9001\u6570\u636e\u5305\u65f6&#xff0c;\u8bb0\u5f55\u65f6\u95f4\u5e76\u8bbe\u7f6e\u5b9a\u65f6\u5668<br \/>\nfunc (p *PacketManager) SendPacketWithTimeout(seqNum uint64) {<br \/>\n    p.Packets[seqNum] &#061; time.Now()<br \/>\n    timeout :&#061; InitialRetransmissionTimeout<br \/>\n    go func() {<br \/>\n        &lt;-time.After(timeout)<br \/>\n        \/\/ \u68c0\u67e5\u662f\u5426\u9700\u8981\u91cd\u4f20<br \/>\n        if _, ok :&#061; p.Packets[seqNum]; ok {<br \/>\n            retransmitPacket(seqNum)<br \/>\n        }<br \/>\n    }()<br \/>\n}<\/p>\n<p>func main() {<br \/>\n    \/\/ \u793a\u4f8b&#xff1a;\u53d1\u9001\u6570\u636e\u5305\u5e76\u8bbe\u7f6e\u5b9a\u65f6\u5668<br \/>\n    packetManager :&#061; &amp;PacketManager{<br \/>\n        Packets: make(map[uint64]time.Time),<br \/>\n    }<\/p>\n<p>    packetManager.SendPacketWithTimeout(1)<br \/>\n}<\/p>\n<h3> 3.2 \u62e5\u585e\u63a7\u5236\u5728QUIC\u4e2d\u7684\u5e94\u7528 <\/h3>\n<h4> 3.2.1 BBR\u7b97\u6cd5\u5728QUIC\u4e2d\u7684\u5b9e\u73b0 <\/h4>\n<p> QUIC\u534f\u8bae\u7684\u4e00\u4e2a\u663e\u8457\u7279\u70b9\u662f\u5b83\u5bf9\u62e5\u585e\u63a7\u5236\u7684\u5904\u7406\u3002BBR&#xff08;Bottleneck Bandwidth and RTT&#xff09;\u7b97\u6cd5\u662fGoogle\u5f00\u53d1\u7684\u4e00\u79cd\u65b0\u7684\u62e5\u585e\u63a7\u5236\u7b97\u6cd5&#xff0c;\u5176\u6838\u5fc3\u601d\u60f3\u662f\u57fa\u4e8e\u7f51\u7edc\u5e26\u5bbd\u548c\u5ef6\u8fdf\u7684\u52a8\u6001\u6d4b\u91cf&#xff0c;\u4ece\u800c\u5b9e\u73b0\u7f51\u7edc\u4f20\u8f93\u7684\u4f18\u5316\u3002 <\/p>\n<h5> BBR\u7b97\u6cd5\u7684\u539f\u7406 <\/h5>\n<p> BBR\u7b97\u6cd5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\u62e5\u585e\u63a7\u5236&#xff1a; <\/p>\n<li>  \u8bc4\u4f30\u5e26\u5bbd  &#xff1a;\u901a\u8fc7\u53d1\u9001\u901f\u7387\u548c\u5f80\u8fd4\u65f6\u95f4\u6765\u8bc4\u4f30\u5f53\u524d\u53ef\u7528\u7684\u6700\u5927\u5e26\u5bbd\u3002 <\/li>\n<li>  \u8bc4\u4f30\u5ef6\u8fdf  &#xff1a;\u901a\u8fc7\u89c2\u5bdf\u901a\u4fe1\u5f80\u8fd4\u65f6\u95f4&#xff08;RTT&#xff09;\u7684\u53d8\u5316\u6765\u8bc4\u4f30\u5f53\u524d\u7684\u6700\u5c0f\u5ef6\u8fdf\u3002 <\/li>\n<li>  \u786e\u5b9a\u62e5\u585e\u7a97\u53e3  &#xff1a;\u57fa\u4e8e\u5e26\u5bbd\u548c\u5ef6\u8fdf\u7684\u6d4b\u91cf\u503c&#xff0c;\u8ba1\u7b97\u51fa\u5408\u9002\u7684\u53d1\u9001\u7a97\u53e3\u5927\u5c0f\u3002 <\/li>\n<li>  \u8c03\u6574\u53d1\u9001\u901f\u7387  &#xff1a;\u6839\u636e\u62e5\u585e\u7a97\u53e3\u7684\u5927\u5c0f\u8c03\u6574\u53d1\u9001\u901f\u7387&#xff0c;\u4ee5\u9632\u6b62\u7f51\u7edc\u8fc7\u8f7d\u3002 <\/li>\n<h5> BBR\u7684\u5b9e\u73b0 <\/h5>\n<p> \u5728QUIC\u4e2d&#xff0c;BBR\u7b97\u6cd5\u88ab\u7528\u4f5c\u9ed8\u8ba4\u7684\u62e5\u585e\u63a7\u5236\u673a\u5236&#xff0c;\u5176\u4e3b\u8981\u5b9e\u73b0\u6b65\u9aa4\u5305\u62ec&#xff1a; <\/p>\n<ul>\n<li>  \u542f\u52a8\u9636\u6bb5  &#xff1a;\u5728\u8fde\u63a5\u5efa\u7acb\u521d\u671f&#xff0c;\u5feb\u901f\u586b\u5145\u7f51\u7edc\u7ba1\u9053&#xff0c;\u5e76\u6d4b\u91cf\u6700\u5c0f\u7684RTT\u3002 <\/li>\n<li>  \u7ef4\u6301\u9636\u6bb5  &#xff1a;\u4f7f\u7528BBR\u7b97\u6cd5\u4e0d\u65ad\u6d4b\u91cf\u5e26\u5bbd\u548c\u5ef6\u8fdf&#xff0c;\u52a8\u6001\u8c03\u6574\u53d1\u9001\u901f\u7387\u3002 <\/li>\n<li>  \u6062\u590d\u9636\u6bb5  &#xff1a;\u5728\u7f51\u7edc\u62e5\u585e\u5bfc\u81f4\u4e22\u5305\u65f6&#xff0c;\u8fc5\u901f\u964d\u4f4e\u53d1\u9001\u901f\u7387&#xff0c;\u5e76\u6062\u590d\u5230\u7a33\u5b9a\u72b6\u6001\u3002 <\/li>\n<\/ul>\n<h4> 3.2.2 \u62e5\u585e\u63a7\u5236\u7684\u53c2\u6570\u8c03\u6574\u548c\u5b9e\u8df5\u5206\u6790 <\/h4>\n<p> \u62e5\u585e\u63a7\u5236\u7684\u53c2\u6570\u8c03\u6574\u662f\u63d0\u5347QUIC\u6027\u80fd\u7684\u5173\u952e\u90e8\u5206\u3002\u5728\u5b9e\u8df5\u4e2d&#xff0c;\u6b63\u786e\u7684\u53c2\u6570\u8bbe\u7f6e\u53ef\u4ee5\u663e\u8457\u6539\u5584\u7528\u6237\u4f53\u9a8c\u3002 <\/p>\n<h5> \u53c2\u6570\u8c03\u6574 <\/h5>\n<p> \u4ee5\u4e0b\u662f\u4e00\u4e9b\u5173\u952e\u53c2\u6570&#xff0c;\u5b83\u4eec\u5728\u62e5\u585e\u63a7\u5236\u7b56\u7565\u4e2d\u8d77\u5230\u6838\u5fc3\u4f5c\u7528&#xff1a; <\/p>\n<ul>\n<li>  cwnd  &#xff08;Congestion Window&#xff09;&#xff1a;\u62e5\u585e\u7a97\u53e3\u5927\u5c0f&#xff0c;\u63a7\u5236\u53d1\u9001\u7aef\u5728\u672a\u6536\u5230\u786e\u8ba4\u4e4b\u524d\u6700\u591a\u53ef\u4ee5\u53d1\u9001\u591a\u5c11\u6570\u636e\u3002 <\/li>\n<li>  ssthresh  &#xff08;Slow Start Threshold&#xff09;&#xff1a;\u6162\u542f\u52a8\u9608\u503c&#xff0c;\u5f53\u62e5\u585e\u7a97\u53e3\u8d85\u8fc7\u8fd9\u4e2a\u503c\u65f6&#xff0c;\u8fdb\u5165\u62e5\u585e\u907f\u514d\u9636\u6bb5\u3002 <\/li>\n<li>  rtt  &#xff08;Round-Trip Time&#xff09;&#xff1a;\u5f80\u8fd4\u65f6\u95f4&#xff0c;\u53cd\u6620\u6570\u636e\u4ece\u53d1\u9001\u7aef\u5230\u63a5\u6536\u7aef\u518d\u8fd4\u56de\u5230\u53d1\u9001\u7aef\u6240\u9700\u7684\u65f6\u95f4\u3002 <\/li>\n<\/ul>\n<h5> \u5b9e\u8df5\u5206\u6790 <\/h5>\n<p> \u5728QUIC\u670d\u52a1\u5668\u7684\u90e8\u7f72\u548c\u4f18\u5316\u8fc7\u7a0b\u4e2d&#xff0c;\u9700\u8981\u5bf9\u4ee5\u4e0a\u53c2\u6570\u8fdb\u884c\u7ec6\u81f4\u7684\u8c03\u6574&#xff1a; <\/p>\n<ul>\n<li>  \u5e26\u5bbd\u5ef6\u8fdf\u4e58\u79ef  &#xff1a;\u786e\u4fdd\u53d1\u9001\u7a97\u53e3\u5927\u5c0f\u80fd\u591f\u5145\u5206\u5229\u7528\u7f51\u7edc\u5e26\u5bbd&#xff0c;\u4f46\u53c8\u4e0d\u81f3\u4e8e\u5bfc\u81f4\u8fc7\u5ea6\u62e5\u585e\u3002 <\/li>\n<li>  \u8c03\u6574\u7a97\u53e3\u5927\u5c0f  &#xff1a;\u6839\u636e\u5b9e\u9645\u7f51\u7edc\u60c5\u51b5\u52a8\u6001\u8c03\u6574cwnd\u548cssthresh\u503c&#xff0c;\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u4e22\u5305\u3002 <\/li>\n<li>  \u76d1\u63a7\u4e0e\u8c03\u6574  &#xff1a;\u5b9e\u65f6\u76d1\u63a7\u7f51\u7edc\u6307\u6807&#xff0c;\u53ca\u65f6\u8c03\u6574\u62e5\u585e\u63a7\u5236\u53c2\u6570&#xff0c;\u4ee5\u5e94\u5bf9\u7f51\u7edc\u72b6\u51b5\u7684\u53d8\u5316\u3002 <\/li>\n<\/ul>\n<p>package main<\/p>\n<p>import (<br \/>\n    &#034;fmt&#034;<br \/>\n    &#034;time&#034;<br \/>\n)<\/p>\n<p>\/\/ \u5047\u8bbe\u7684\u5e26\u5bbd\u548c\u5ef6\u8fdf\u6d4b\u91cf<br \/>\nfunc measureBandwidth() float64 {<br \/>\n    \/\/ \u6d4b\u91cf\u5e26\u5bbd\u903b\u8f91<br \/>\n    return 1000 \/\/ \u793a\u4f8b\u5e26\u5bbd\u503c<br \/>\n}<\/p>\n<p>func measureRTT() time.Duration {<br \/>\n    \/\/ \u6d4b\u91cfRTT\u903b\u8f91<br \/>\n    return 100 * time.Millisecond \/\/ \u793a\u4f8bRTT\u503c<br \/>\n}<\/p>\n<p>func adjustCongestionControl(cwnd, ssthresh float64) {<br \/>\n    \/\/ \u57fa\u4e8e\u6d4b\u91cf\u503c\u8c03\u6574\u62e5\u585e\u63a7\u5236\u53c2\u6570<br \/>\n    fmt.Printf(&#034;\u8c03\u6574cwnd\u4e3a: %v, ssthresh\u4e3a: %v\\\\n&#034;, cwnd, ssthresh)<br \/>\n}<\/p>\n<p>func main() {<br \/>\n    \/\/ \u793a\u4f8b&#xff1a;\u8c03\u6574\u62e5\u585e\u63a7\u5236\u53c2\u6570<br \/>\n    bandwidth :&#061; measureBandwidth()<br \/>\n    rtt :&#061; measureRTT()<br \/>\n    \/\/ \u6839\u636e\u5e26\u5bbd\u548c\u5ef6\u8fdf\u6d4b\u91cf\u503c\u6765\u8c03\u6574\u62e5\u585e\u63a7\u5236\u53c2\u6570<br \/>\n    adjustCongestionControl(bandwidth, float64(rtt)\/2)<br \/>\n}<\/p>\n<p> \u901a\u8fc7\u4e0d\u65ad\u76d1\u6d4b\u7f51\u7edc\u6761\u4ef6\u548c\u8c03\u6574\u53c2\u6570&#xff0c;QUIC\u53ef\u4ee5\u6301\u7eed\u4f18\u5316\u5176\u6027\u80fd&#xff0c;\u9002\u5e94\u5404\u79cd\u4e0d\u540c\u7684\u7f51\u7edc\u73af\u5883\u3002 <\/p>\n<h2> 4. \u591a\u8def\u590d\u7528\u652f\u6301\u4e0e\u5934\u90e8\u963b\u585e\u95ee\u9898\u89e3\u51b3 <\/h2>\n<h3> 4.1 QUIC\u7684\u591a\u8def\u590d\u7528\u7279\u6027 <\/h3>\n<h4> 4.1.1 \u591a\u8def\u590d\u7528\u4e0eTCP\u7684\u5bf9\u6bd4\u5206\u6790 <\/h4>\n<p> \u591a\u8def\u590d\u7528\u662fQUIC\u534f\u8bae\u7684\u4e00\u5927\u4eae\u70b9&#xff0c;\u76f8\u6bd4\u4e8eTCP\u534f\u8bae&#xff0c;\u5b83\u80fd\u591f\u5728\u4e00\u4e2a\u8fde\u63a5\u4e2d\u72ec\u7acb\u5730\u5904\u7406\u591a\u4e2a\u6d41\u7684\u6570\u636e\u4f20\u8f93\u3002\u5728TCP\u4e2d&#xff0c;\u7531\u4e8e\u6d41\u63a7\u5236\u548c\u62e5\u585e\u63a7\u5236\u662f\u5728\u8fde\u63a5\u7ea7\u522b\u4e0a\u8fdb\u884c\u7684&#xff0c;\u6240\u6709\u6570\u636e\u6d41\u5171\u4eab\u540c\u4e00\u4e2a\u62e5\u585e\u7a97\u53e3&#xff0c;\u8fd9\u5c31\u5bfc\u81f4\u4e86\u4e00\u4e2a\u6d41\u7684\u5ef6\u8fdf\u4f1a\u963b\u585e\u6574\u4e2a\u8fde\u63a5\u7684\u6570\u636e\u4f20\u8f93&#xff0c;\u5373\u6240\u8c13\u7684\u201c\u961f\u9996\u963b\u585e\u201d&#xff08;Head-of-line blocking, HOL blocking&#xff09;\u3002 <\/p>\n<p> QUIC\u901a\u8fc7\u5f15\u5165\u591a\u8def\u590d\u7528\u89e3\u51b3\u4e86\u8fd9\u4e00\u95ee\u9898\u3002\u6bcf\u4e2aQUIC\u6d41\u90fd\u6709\u81ea\u5df1\u7684\u6d41\u63a7\u5236\u548c\u62e5\u585e\u7a97\u53e3&#xff0c;\u56e0\u6b64\u5373\u4f7f\u4e00\u4e2a\u6d41\u4e2d\u7684\u6570\u636e\u4e22\u5931&#xff0c;\u5176\u4ed6\u6d41\u7684\u4f20\u8f93\u4e5f\u4e0d\u4f1a\u53d7\u5230\u5f71\u54cd\u3002\u4ece\u7528\u6237\u4f53\u9a8c\u7684\u89d2\u5ea6\u6765\u770b&#xff0c;\u8fd9\u5927\u5927\u63d0\u9ad8\u4e86\u7f51\u7edc\u5e94\u7528\u7684\u54cd\u5e94\u901f\u5ea6\u548c\u53ef\u9760\u6027\u3002 <\/p>\n<h4> 4.1.2 \u591a\u8def\u590d\u7528\u7684\u5b9e\u73b0\u7ec6\u8282\u548c\u539f\u7406 <\/h4>\n<p> \u591a\u8def\u590d\u7528\u7684\u5b9e\u73b0\u4f9d\u8d56\u4e8eQUIC\u8fde\u63a5\u4e0a\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u6d41\u3002\u5728QUIC\u4e2d&#xff0c;\u6bcf\u4e2a\u6d41\u90fd\u662f\u7531\u4e00\u4e2a\u552f\u4e00\u7684\u6d41ID\u6807\u8bc6&#xff0c;\u5e76\u4e14\u662f\u53cc\u5411\u7684\u3002\u8fd9\u610f\u5473\u7740\u6570\u636e\u53ef\u4ee5\u5728\u4e24\u4e2a\u65b9\u5411\u4e0a\u540c\u65f6\u4f20\u8f93&#xff0c;\u800c\u4e0d\u4f1a\u4e92\u76f8\u5e72\u6270\u3002 <\/p>\n<p> QUIC\u6d41\u7684\u751f\u547d\u5468\u671f\u5305\u62ec\u521d\u59cb\u5316\u3001\u6d3b\u8dc3\u3001\u534a\u5173\u95ed\u548c\u5173\u95ed\u56db\u4e2a\u9636\u6bb5\u3002\u5f53\u5ba2\u6237\u7aef\u6216\u670d\u52a1\u5668\u60f3\u8981\u53d1\u9001\u6570\u636e\u65f6&#xff0c;\u5b83\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6d41\u3002\u6d41\u5185\u7684\u6570\u636e\u5305\u53ef\u4ee5\u4e71\u5e8f\u5230\u8fbe&#xff0c;\u56e0\u4e3aQUIC\u652f\u6301\u4e71\u5e8f\u53d1\u9001\u548c\u63a5\u6536&#xff0c;\u8fd9\u8fdb\u4e00\u6b65\u63d0\u9ad8\u4e86\u7f51\u7edc\u6548\u7387\u3002 <\/p>\n<p> QUIC\u7684\u5934\u90e8\u4fe1\u606f\u662f\u8f7b\u91cf\u7ea7\u7684&#xff0c;\u8fd9\u5f97\u76ca\u4e8e\u5176\u4f7f\u7528\u4e86\u6700\u5c0f\u7684\u5e27\u7c7b\u578b\u7ed3\u6784\u3002\u4f8b\u5982&#xff0c;\u6d41\u5e27&#xff08;Stream Frame&#xff09;\u7528\u4e8e\u627f\u8f7d\u6d41\u6570\u636e&#xff0c;\u800c\u6d41\u63a7\u5236\u548c\u91cd\u7f6e\u4fe1\u606f\u5219\u901a\u8fc7\u6d41\u63a7\u5236\u5e27&#xff08;Stream Control Frame&#xff09;\u548c\u590d\u4f4d\u6d41\u5e27&#xff08;Reset Stream Frame&#xff09;\u8fdb\u884c\u4f20\u9012\u3002 <\/p>\n<h3> 4.2 \u5934\u90e8\u963b\u585e\u95ee\u9898\u7684\u89e3\u51b3\u7b56\u7565 <\/h3>\n<h4> 4.2.1 \u5934\u90e8\u963b\u585e\u73b0\u8c61\u7684\u539f\u7406\u548c\u5f71\u54cd <\/h4>\n<p> \u5934\u90e8\u963b\u585e\u95ee\u9898\u53d1\u751f\u5728\u591a\u4e2a\u6570\u636e\u6d41\u5171\u4eab\u540c\u4e00\u4e2a\u4f20\u8f93\u901a\u9053\u65f6&#xff0c;\u5176\u4e2d\u4e00\u4e2a\u6d41\u7684\u6570\u636e\u95ee\u9898&#xff08;\u5982\u4e22\u5931\u6216\u5ef6\u8fdf&#xff09;\u4f1a\u5f71\u54cd\u5176\u4ed6\u6d41\u7684\u4f20\u8f93\u6548\u7387\u3002\u8fd9\u79cd\u73b0\u8c61\u5728\u4f7f\u7528HTTP\/1.x\u65f6\u5c24\u4e3a\u660e\u663e&#xff0c;\u56e0\u4e3a\u5b83\u7684\u4f20\u8f93\u673a\u5236\u9ed8\u8ba4\u662f\u6309\u987a\u5e8f\u53d1\u9001\u8bf7\u6c42\u7684\u3002 <\/p>\n<p> \u5728QUIC\u4e2d&#xff0c;\u867d\u7136\u591a\u8def\u590d\u7528\u53ef\u4ee5\u72ec\u7acb\u5904\u7406\u591a\u4e2a\u6d41&#xff0c;\u4f46\u5982\u679c\u5927\u91cf\u7684\u6d41\u540c\u65f6\u62e5\u585e&#xff0c;\u4ecd\u7136\u4f1a\u5f71\u54cd\u6574\u4e2a\u8fde\u63a5\u7684\u8868\u73b0\u3002\u5934\u90e8\u963b\u585e\u4f1a\u964d\u4f4e\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd&#xff0c;\u7279\u522b\u662f\u5728\u7f51\u7edc\u6761\u4ef6\u4e0d\u4f73\u7684\u60c5\u51b5\u4e0b&#xff0c;\u7528\u6237\u53ef\u80fd\u4f1a\u9047\u5230\u5ef6\u8fdf\u548c\u5361\u987f\u3002 <\/p>\n<h4> 4.2.2 \u89e3\u51b3\u5934\u90e8\u963b\u585e\u7684\u6280\u672f\u65b9\u6cd5\u548c\u5b9e\u8df5 <\/h4>\n<p> \u4e3a\u4e86\u51cf\u5c11\u5934\u90e8\u963b\u585e\u7684\u5f71\u54cd&#xff0c;QUIC\u4f7f\u7528\u4e86\u4e00\u4e9b\u91cd\u8981\u7684\u673a\u5236&#xff1a; <\/p>\n<ul>\n<li>  \u72ec\u7acb\u7684\u6d41\u63a7\u5236  &#xff1a;\u5982\u4e4b\u524d\u6240\u8ff0&#xff0c;QUIC\u4e3a\u6bcf\u4e2a\u6d41\u7ef4\u62a4\u72ec\u7acb\u7684\u6d41\u63a7\u5236\u673a\u5236\u3002\u8fd9\u610f\u5473\u7740\u6570\u636e\u5305\u7684\u4e22\u5931\u53ea\u4f1a\u5f71\u54cd\u4e0e\u5b83\u5173\u8054\u7684\u6d41&#xff0c;\u800c\u4e0d\u4f1a\u5bf9\u5176\u4ed6\u6d41\u9020\u6210\u5f71\u54cd\u3002 <\/li>\n<li>  \u5305\u7ea7\u7684\u91cd\u4f20  &#xff1a;QUIC\u652f\u6301\u5305\u7ea7\u522b\u7684\u91cd\u4f20&#xff0c;\u800c\u4e0d\u662f\u57fa\u4e8e\u6574\u4e2a\u6d41\u3002\u5373\u4f7f\u4e00\u4e2a\u6570\u636e\u5305\u4e22\u5931\u4e86&#xff0c;\u53ea\u6709\u8be5\u5305\u5185\u7684\u6570\u636e\u9700\u8981\u91cd\u65b0\u53d1\u9001&#xff0c;\u5176\u4ed6\u6570\u636e\u5305\u4f9d\u65e7\u53ef\u4ee5\u88ab\u6b63\u5e38\u5904\u7406\u3002 <\/li>\n<li>  \u6d41\u4f18\u5148\u7ea7  &#xff1a;QUIC\u5141\u8bb8\u4e3a\u4e0d\u540c\u7684\u6d41\u8bbe\u7f6e\u4f18\u5148\u7ea7&#xff0c;\u8fd9\u6837\u5728\u8d44\u6e90\u6709\u9650\u65f6&#xff0c;\u53ef\u4ee5\u4f18\u5148\u5904\u7406\u66f4\u91cd\u8981\u7684\u6d41\u3002 <\/li>\n<\/ul>\n<p> \u5728\u5b9e\u8df5\u8fc7\u7a0b\u4e2d&#xff0c;\u5f00\u53d1\u8005\u548c\u7f51\u7edc\u7ba1\u7406\u5458\u53ef\u4ee5\u5229\u7528QUIC\u7684\u6d41\u63a7\u5236\u7279\u6027&#xff0c;\u901a\u8fc7\u5408\u7406\u8bbe\u7f6e\u6d41\u4f18\u5148\u7ea7\u548c\u6d41\u5927\u5c0f&#xff0c;\u4f18\u5316\u7f51\u7edc\u4f20\u8f93\u6548\u7387\u3002\u4f8b\u5982&#xff0c;\u5728HTTP\/3\u4e2d&#xff0c;\u53ef\u4ee5\u5bf9\u5173\u952e\u8d44\u6e90&#xff08;\u5982HTML\u6587\u6863&#xff09;\u8bbe\u7f6e\u8f83\u9ad8\u7684\u4f18\u5148\u7ea7&#xff0c;\u4ece\u800c\u51cf\u5c11\u9875\u9762\u52a0\u8f7d\u7684\u5ef6\u8fdf\u3002 <\/p>\n<p> \u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4ee3\u7801\u793a\u4f8b&#xff0c;\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528Go\u8bed\u8a00\u4e2d\u7684QUIC\u5e93\u6765\u8bbe\u7f6e\u6d41\u4f18\u5148\u7ea7&#xff1a; <\/p>\n<p>\/\/ \u5047\u8bbe conn \u662f\u4e00\u4e2a QUIC \u8fde\u63a5\u5b9e\u4f8b<br \/>\nstream, err :&#061; conn.OpenStream(0)<br \/>\nif err !&#061; nil {<br \/>\n    log.Fatal(err)<br \/>\n}<\/p>\n<p>\/\/ \u8bbe\u7f6e\u6d41\u4f18\u5148\u7ea7<br \/>\nif err :&#061; stream.SetPriority(qtypes.PriorityLevelHigh); err !&#061; nil {<br \/>\n    log.Fatal(err)<br \/>\n}<\/p>\n<p>\/\/ \u5199\u5165\u6570\u636e<br \/>\nif _, err :&#061; stream.Write([]byte(&#034;important data&#034;)); err !&#061; nil {<br \/>\n    log.Fatal(err)<br \/>\n}<\/p>\n<p>\/\/ \u5173\u95ed\u6d41<br \/>\nstream.Close()<\/p>\n<p> \u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d&#xff0c;\u6211\u4eec\u9996\u5148\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u6d41&#xff0c;\u5e76\u4e3a\u5176\u8bbe\u7f6e\u4e86\u9ad8\u4f18\u5148\u7ea7\u3002\u8fd9\u6837&#xff0c;\u5728\u7f51\u7edc\u62e5\u585e\u65f6&#xff0c;\u8fd9\u4e2a\u6d41\u7684\u6570\u636e\u4f1a\u6bd4\u5176\u4ed6\u4f4e\u4f18\u5148\u7ea7\u7684\u6d41\u66f4\u6709\u53ef\u80fd\u88ab\u4f18\u5148\u5904\u7406\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f&#xff0c;QUIC\u89c4\u8303\u4ecd\u5728\u53d1\u5c55\u4e2d&#xff0c;\u5177\u4f53\u7684API\u548c\u65b9\u6cd5\u53ef\u80fd\u4f1a\u6709\u6240\u53d8\u5316&#xff0c;\u56e0\u6b64\u5728\u4f7f\u7528\u65f6\u5e94\u53c2\u8003\u6700\u65b0\u7684\u6587\u6863\u3002 <\/p>\n<h2> 5. \u7248\u672c\u534f\u5546\u673a\u5236\u4e0e\u5feb\u901f\u5347\u7ea7\u80fd\u529b <\/h2>\n<p> \u5728\u4e92\u8054\u7f51\u901a\u4fe1\u4e2d&#xff0c;\u534f\u8bae\u7684\u5347\u7ea7\u662f\u4e0d\u53ef\u907f\u514d\u7684&#xff0c;\u5c24\u5176\u662f\u5728\u9700\u8981\u63d0\u9ad8\u6548\u7387\u3001\u5b89\u5168\u6027\u3001\u517c\u5bb9\u6027\u7684\u573a\u666f\u4e0b\u3002QUIC\u534f\u8bae\u4f5c\u4e3a\u4e0b\u4e00\u4ee3\u7684\u4f20\u8f93\u5c42\u534f\u8bae&#xff0c;\u5176\u7248\u672c\u534f\u5546\u673a\u5236\u548c\u5feb\u901f\u5347\u7ea7\u80fd\u529b\u662f\u5176\u6838\u5fc3\u7279\u6027\u4e4b\u4e00\u3002\u672c\u7ae0\u5c06\u8be6\u7ec6\u63a2\u8ba8QUIC\u534f\u8bae\u7684\u7248\u672c\u534f\u5546\u673a\u5236&#xff0c;\u4ee5\u53ca\u5982\u4f55\u5b9e\u73b0\u5feb\u901f\u5347\u7ea7&#xff0c;\u4ee5\u786e\u4fdd\u901a\u4fe1\u7684\u987a\u7545\u548c\u6548\u7387\u3002 <\/p>\n<h3> 5.1 QUIC\u534f\u8bae\u7684\u7248\u672c\u534f\u5546\u673a\u5236 <\/h3>\n<h4> 5.1.1 \u7248\u672c\u534f\u5546\u7684\u5de5\u4f5c\u539f\u7406 <\/h4>\n<p> QUIC\u7248\u672c\u534f\u5546\u673a\u5236\u5141\u8bb8\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u5668\u4e4b\u95f4\u5728\u521d\u59cb\u63e1\u624b\u9636\u6bb5\u534f\u5546\u51fa\u4e00\u4e2a\u53cc\u65b9\u90fd\u652f\u6301\u7684QUIC\u7248\u672c\u3002\u8fd9\u4e00\u673a\u5236\u7684\u6838\u5fc3\u662f\u7248\u672c\u534f\u5546\u5305&#xff08;Version Negotiation Packet&#xff0c;VNP&#xff09;&#xff0c;\u5b83\u7531\u670d\u52a1\u5668\u5728\u63a5\u6536\u5230\u4e0d\u652f\u6301\u7684\u7248\u672c\u7684\u521d\u59cb\u5305\u65f6\u53d1\u9001&#xff0c;\u5305\u542b\u4e86\u5b83\u6240\u652f\u6301\u7684\u6240\u6709QUIC\u7248\u672c\u5217\u8868\u3002\u5ba2\u6237\u7aef\u5728\u63a5\u6536\u5230VNP\u540e&#xff0c;\u91cd\u65b0\u53d1\u8d77\u8fde\u63a5&#xff0c;\u4f7f\u7528\u5217\u8868\u4e2d\u53cc\u65b9\u90fd\u652f\u6301\u7684\u7248\u672c\u3002 <\/p>\n<p> \u7248\u672c\u534f\u5546\u8fc7\u7a0b\u901a\u5e38\u53d1\u751f\u5728\u9996\u6b21\u8fde\u63a5\u5c1d\u8bd5\u65f6&#xff0c;\u5ba2\u6237\u7aef\u53d1\u9001\u521d\u59cb\u5305&#xff0c;\u5e76\u671f\u671b\u670d\u52a1\u5668\u4ee5\u63e1\u624b\u5305\u54cd\u5e94\u3002\u5982\u679c\u670d\u52a1\u5668\u4e0d\u652f\u6301\u5ba2\u6237\u7aef\u4f7f\u7528\u7684\u7248\u672c&#xff0c;\u5b83\u5c06\u53d1\u9001\u4e00\u4e2aVNP&#xff0c;\u5217\u51fa\u5b83\u652f\u6301\u7684\u7248\u672c\u3002\u5ba2\u6237\u7aef\u968f\u540e\u9009\u62e9\u4e00\u4e2a\u517c\u5bb9\u7684\u7248\u672c\u91cd\u65b0\u53d1\u8d77\u8fde\u63a5\u3002 <\/p>\n<h4> 5.1.2 \u7248\u672c\u534f\u5546\u7684\u5b9e\u73b0\u548c\u517c\u5bb9\u6027\u5206\u6790 <\/h4>\n<p> \u5728Go\u8bed\u8a00\u5b9e\u73b0\u7684QUIC\u670d\u52a1\u5668\u4e2d&#xff0c;\u7248\u672c\u534f\u5546\u7684\u5b9e\u73b0\u7ec6\u8282\u4e3b\u8981\u6d89\u53ca\u5230\u5305\u7684\u89e3\u6790\u548c\u6784\u5efa\u3002\u670d\u52a1\u5668\u9700\u8981\u6b63\u786e\u89e3\u6790\u5ba2\u6237\u7aef\u7684\u521d\u59cb\u5305&#xff0c;\u63d0\u53d6\u51faQUIC\u7248\u672c\u4fe1\u606f&#xff0c;\u5e76\u5728\u5fc5\u8981\u65f6\u6784\u5efa\u5e76\u53d1\u9001\u7248\u672c\u534f\u5546\u5305\u3002 <\/p>\n<p> \u517c\u5bb9\u6027\u5206\u6790\u9700\u8981\u8003\u8651\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762&#xff1a; <\/p>\n<ul>\n<li>  \u68c0\u6d4b\u652f\u6301\u7248\u672c&#xff1a;  \u670d\u52a1\u5668\u5e94\u5f53\u7ef4\u62a4\u4e00\u4e2a\u652f\u6301\u7684\u7248\u672c\u5217\u8868&#xff0c;\u5e76\u80fd\u591f\u4e0e\u5ba2\u6237\u7aef\u534f\u5546\u51fa\u4e00\u4e2a\u5171\u901a\u7248\u672c\u3002 <\/li>\n<li>  \u534f\u5546\u7b56\u7565&#xff1a;  \u5982\u4f55\u5904\u7406\u5ba2\u6237\u7aef\u7684\u521d\u59cb\u5305&#xff0c;\u4ee5\u53ca\u5982\u4f55\u5728VNP\u4e2d\u5217\u51fa\u591a\u4e2a\u7248\u672c\u4ee5\u63d0\u9ad8\u517c\u5bb9\u6027\u3002 <\/li>\n<li>  \u6027\u80fd\u8003\u8651&#xff1a;  \u907f\u514d\u9891\u7e41\u7684\u7248\u672c\u534f\u5546\u5bfc\u81f4\u7684\u6027\u80fd\u4e0b\u964d\u3002 <\/li>\n<\/ul>\n<p> \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5316\u7684Go\u8bed\u8a00\u4ee3\u7801\u6bb5&#xff0c;\u5c55\u793a\u4e86\u5982\u4f55\u5728\u670d\u52a1\u5668\u7aef\u5904\u7406\u7248\u672c\u534f\u5546&#xff1a; <\/p>\n<p>\/\/ \u5047\u8bbe\u5df2\u7ecf\u63a5\u6536\u5230\u4e86\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u521d\u59cb\u5305<br \/>\nif !quic.supportsVersion(initialPacket.Version) {<br \/>\n    \/\/ \u6784\u5efa\u7248\u672c\u534f\u5546\u5305<br \/>\n    vnPacket :&#061; quic.buildVersionNegotiationPacket(initialPacket)<br \/>\n    \/\/ \u53d1\u9001\u7248\u672c\u534f\u5546\u5305<br \/>\n    quic.sendPacket(vnPacket)<br \/>\n}<\/p>\n<p>\/\/ \u5ba2\u6237\u7aef\u63a5\u6536\u5230\u7248\u672c\u534f\u5546\u5305\u540e&#xff0c;\u5c1d\u8bd5\u4f7f\u7528\u5217\u8868\u4e2d\u652f\u6301\u7684\u7248\u672c\u91cd\u65b0\u8fde\u63a5<br \/>\nfor _, version :&#061; range vnPacket.SupportedVersions {<br \/>\n    if quic.client.supportsVersion(version) {<br \/>\n        \/\/ \u4f7f\u7528\u652f\u6301\u7684\u7248\u672c\u91cd\u65b0\u8fde\u63a5<br \/>\n        quic.client.reconnect(version)<br \/>\n        break<br \/>\n    }<br \/>\n}<\/p>\n<h3> 5.2 \u5feb\u901f\u5347\u7ea7\u80fd\u529b\u7684\u5b9e\u73b0\u4e0e\u5e94\u7528 <\/h3>\n<h4> 5.2.1 0-RTT\u5347\u7ea7\u7684\u53ef\u884c\u6027\u5206\u6790 <\/h4>\n<p> QUIC\u534f\u8bae\u7684\u5feb\u901f\u5347\u7ea7\u80fd\u529b\u4e4b\u4e00\u662f0-RTT&#xff08;Zero Round Trip Time&#xff09;\u91cd\u64ad\u4fdd\u62a4\u3002\u5b83\u5141\u8bb8\u5ba2\u6237\u7aef\u5728\u7b2c\u4e00\u6b21\u8fde\u63a5\u65f6\u53d1\u9001\u52a0\u5bc6\u6570\u636e&#xff0c;\u800c\u65e0\u9700\u7b49\u5f85\u670d\u52a1\u5668\u7684\u54cd\u5e94\u3002\u8fd9\u79cd\u80fd\u529b\u7279\u522b\u9002\u7528\u4e8e\u9700\u8981\u4f4e\u5ef6\u8fdf\u7684\u5e94\u7528\u573a\u666f&#xff0c;\u5982\u7f51\u9875\u6d4f\u89c8\u3001\u5373\u65f6\u6d88\u606f\u7b49\u3002 <\/p>\n<p> 0-RTT\u5347\u7ea7\u7684\u53ef\u884c\u6027\u4f9d\u8d56\u4e8e\u4ee5\u4e0b\u51e0\u4e2a\u56e0\u7d20&#xff1a; <\/p>\n<ul>\n<li>  \u670d\u52a1\u5668\u7684\u52a0\u5bc6\u4e0a\u4e0b\u6587&#xff1a;  \u670d\u52a1\u5668\u9700\u8981\u9884\u5148\u4fdd\u5b58\u4e00\u4e2a\u52a0\u5bc6\u4e0a\u4e0b\u6587&#xff0c;\u8fd9\u6837\u5b83\u53ef\u4ee5\u5728\u4e0d\u7b49\u5f85\u5ba2\u6237\u7aef\u53d1\u9001\u5b8c\u6574\u63e1\u624b\u4fe1\u606f\u7684\u60c5\u51b5\u4e0b\u9a8c\u8bc10-RTT\u6570\u636e\u5305\u3002 <\/li>\n<li>  \u6570\u636e\u7684\u91cd\u653e\u653b\u51fb\u98ce\u9669&#xff1a;  \u7531\u4e8e0-RTT\u6570\u636e\u53ef\u4ee5\u91cd\u653e&#xff0c;\u56e0\u6b64\u5fc5\u987b\u6709\u673a\u5236\u4fdd\u8bc1\u6570\u636e\u7684\u5b89\u5168\u6027\u3002 <\/li>\n<li>  \u6027\u80fd\u63d0\u5347&#xff1a;  \u5206\u67900-RTT\u5347\u7ea7\u5bf9\u4e8e\u964d\u4f4e\u6574\u4f53\u8fde\u63a5\u5efa\u7acb\u65f6\u95f4\u7684\u8d21\u732e\u3002 <\/li>\n<\/ul>\n<h4> 5.2.2 \u5b9e\u8df5\u4e2d\u7684\u5feb\u901f\u5347\u7ea7\u6d41\u7a0b\u548c\u4f18\u5316\u6280\u5de7 <\/h4>\n<p> \u5728\u5b9e\u8df5\u4e2d&#xff0c;QUIC\u670d\u52a1\u5668\u9700\u8981\u63d0\u4f9b\u5bf90-RTT\u91cd\u64ad\u4fdd\u62a4\u7684\u652f\u6301&#xff0c;\u540c\u65f6\u8981\u786e\u4fdd\u5347\u7ea7\u8fc7\u7a0b\u7684\u5b89\u5168\u6027\u548c\u6548\u7387\u3002\u4e3a\u4e86\u5b9e\u73b0\u5feb\u901f\u5347\u7ea7&#xff0c;\u670d\u52a1\u5668\u7aef\u5e94\u5b9e\u73b0\u4ee5\u4e0b\u6b65\u9aa4&#xff1a; <\/p>\n<li>  \u5b58\u50a8\u52a0\u5bc6\u4e0a\u4e0b\u6587&#xff1a;  \u5728\u6210\u529f\u63e1\u624b\u540e&#xff0c;\u670d\u52a1\u5668\u5b58\u50a8\u4e0e\u5ba2\u6237\u7aef\u7684\u52a0\u5bc6\u4e0a\u4e0b\u6587\u3002 <\/li>\n<li>  \u9a8c\u8bc10-RTT\u6570\u636e\u5305&#xff1a;  \u5728\u63a5\u6536\u52300-RTT\u6570\u636e\u5305\u65f6&#xff0c;\u4f7f\u7528\u5b58\u50a8\u7684\u4e0a\u4e0b\u6587\u8fdb\u884c\u9a8c\u8bc1\u3002 <\/li>\n<li>  \u5b89\u5168\u6027\u4fdd\u969c&#xff1a;  \u91c7\u53d6\u63aa\u65bd\u9632\u6b62\u91cd\u653e\u653b\u51fb&#xff0c;\u5982\u9650\u52360-RTT\u6570\u636e\u5305\u53ef\u53d1\u9001\u7684\u6570\u636e\u91cf\u6216\u6b21\u6570\u3002 <\/li>\n<li>  \u6027\u80fd\u4f18\u5316&#xff1a;  \u901a\u8fc7\u51cf\u5c110-RTT\u6570\u636e\u5305\u7684\u5904\u7406\u65f6\u95f4&#xff0c;\u63d0\u5347\u6574\u4f53\u8fde\u63a5\u6548\u7387\u3002 <\/li>\n<p>\/\/ \u5047\u8bbe\u8fd9\u662f\u670d\u52a1\u5668\u7aef\u5904\u74060-RTT\u6570\u636e\u5305\u7684\u7b80\u5316\u903b\u8f91<br \/>\nfunc (server *QUICServer) handle0RTTData(data []byte) error {<br \/>\n    \/\/ \u68c0\u7d22\u4e0e\u5ba2\u6237\u7aef\u5173\u8054\u7684\u52a0\u5bc6\u4e0a\u4e0b\u6587<br \/>\n    ctx, err :&#061; server.getEncryptionContext(clientID)<br \/>\n    if err !&#061; nil {<br \/>\n        return err<br \/>\n    }<br \/>\n    \/\/ \u4f7f\u7528\u4e0a\u4e0b\u6587\u9a8c\u8bc10-RTT\u6570\u636e\u5305<br \/>\n    if err :&#061; ctx.verify(data); err !&#061; nil {<br \/>\n        return err<br \/>\n    }<br \/>\n    \/\/ \u5904\u74060-RTT\u6570\u636e\u5305\u4e2d\u7684\u8bf7\u6c42<br \/>\n    \/\/ &#8230;<br \/>\n    return nil<br \/>\n}<\/p>\n<p> QUIC\u534f\u8bae\u7684\u7248\u672c\u534f\u5546\u673a\u5236\u4e0e\u5feb\u901f\u5347\u7ea7\u80fd\u529b\u5171\u540c\u4f5c\u7528&#xff0c;\u63d0\u9ad8\u4e86\u534f\u8bae\u7684\u9002\u5e94\u6027\u548c\u7075\u6d3b\u6027\u3002\u901a\u8fc7\u4e0a\u8ff0\u7684\u8ba8\u8bba&#xff0c;\u6211\u4eec\u4e86\u89e3\u4e86\u5728Go\u8bed\u8a00\u5b9e\u73b0\u7684QUIC\u670d\u52a1\u5668\u4e2d\u5982\u4f55\u5904\u7406\u7248\u672c\u534f\u5546&#xff0c;\u5e76\u5b9e\u73b0\u4e86\u5feb\u901f\u5347\u7ea7\u76840-RTT\u91cd\u64ad\u4fdd\u62a4\u3002\u8fd9\u4e0d\u4ec5\u4f18\u5316\u4e86\u7528\u6237\u4f53\u9a8c&#xff0c;\u8fd8\u589e\u5f3a\u4e86\u901a\u4fe1\u6548\u7387\u548c\u5b89\u5168\u6027\u3002 <\/p>\n<p>  \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90&#xff0c;\u70b9\u51fb\u83b7\u53d6  <img decoding=\"async\" alt=\"menu-r.4af5f7ec.gif\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418125747-68024c4bdeaf2.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom\" \/><\/p>\n<p> \u7b80\u4ecb&#xff1a;\u8be5\u9879\u76ee\u662f\u4e00\u4e2a\u4f7f\u7528Go\u8bed\u8a00\u5b9e\u73b0\u7684QUIC&#xff08;Quick UDP Internet Connections&#xff09;\u534f\u8bae\u670d\u52a1\u5668\u7684\u5f00\u6e90\u9879\u76ee&#xff0c;\u7531Lucas Clemente\u5f00\u53d1\u3002QUIC\u662f\u4e00\u79cd\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u5b89\u5168\u6027\u7684\u7f51\u7edc\u4f20\u8f93\u534f\u8bae&#xff0c;\u7531Google\u8bbe\u8ba1&#xff0c;\u65e8\u5728\u66ff\u4ee3TCP\u5e76\u4f18\u5316HTTP\/2\u6027\u80fd&#xff0c;\u7279\u522b\u662f\u5728\u79fb\u52a8\u7f51\u7edc\u4e2d\u3002\u5b83\u5229\u7528Go\u8bed\u8a00\u5728\u5e76\u53d1\u5904\u7406\u548c\u7f51\u7edc\u7f16\u7a0b\u65b9\u9762\u7684\u4f18\u52bf&#xff0c;\u5b9e\u73b0\u4e86\u5feb\u901f\u8fde\u63a5\u3001\u51cf\u5c11\u91cd\u4f20\u3001\u591a\u8def\u590d\u7528\u3001\u7248\u672c\u534f\u5546\u548c\u5b89\u5168\u6539\u8fdb\u7b49\u7279\u70b9\u3002\u9879\u76ee\u6838\u5fc3\u5305\u62ecQUIC\u670d\u52a1\u5668\u903b\u8f91\u3001\u7b80\u5355\u7684\u5ba2\u6237\u7aef\u63a5\u53e3\u3001HTTP\/3\u652f\u6301\u3001\u6d4b\u8bd5\u7528\u4f8b\u53ca\u793a\u4f8b\u4ee3\u7801\u548c\u8be6\u5c3d\u6587\u6863&#xff0c;\u65e8\u5728\u63d0\u4f9b\u9ad8\u6027\u80fd\u548c\u8f7b\u91cf\u7ea7\u7684QUIC\u534f\u8bae\u5b9e\u73b0\u3002 <\/p>\n<p>  \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90&#xff0c;\u70b9\u51fb\u83b7\u53d6  <img decoding=\"async\" alt=\"menu-r.4af5f7ec.gif\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418125747-68024c4bdeaf2.gif\" style=\"width:16px;margin-left:4px;vertical-align:text-bottom\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.4k\u6b21\uff0c\u70b9\u8d5e7\u6b21\uff0c\u6536\u85cf11\u6b21\u3002\u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90\uff0c\u70b9\u51fb\u83b7\u53d6   \u7b80\u4ecb\uff1a\u8be5\u9879\u76ee\u662f\u4e00\u4e2a\u4f7f\u7528Go\u8bed\u8a00\u5b9e\u73b0\u7684QUIC\uff08Quick UDP Internet Connections\uff09\u534f\u8bae\u670d\u52a1\u5668\u7684\u5f00\u6e90\u9879\u76ee\uff0c\u7531Lucas Clemente\u5f00\u53d1\u3002QUIC\u662f\u4e00\u79cd\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u5b89\u5168\u6027\u7684\u7f51\u7edc\u4f20\u8f93\u534f\u8bae\uff0c\u7531Google\u8bbe\u8ba1\uff0c\u65e8\u5728\u66ff\u4ee3TCP\u5e76\u4f18\u5316HTTP\/2\u6027\u80fd\uff0c\u7279\u522b\u662f\u5728\u79fb\u52a8\u7f51\u7edc\u4e2d\u3002\u5b83\u5229\u7528Go\u8bed\u8a00\u5728\u5e76\u53d1\u5904\u7406\u548c\u7f51\u7edc\u7f16\u7a0b\u65b9\u9762\u7684\u4f18\u52bf\uff0c\u5b9e\u73b0\u4e86&#8230;_quic-go<\/p>\n","protected":false},"author":2,"featured_media":14139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-14140","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>quic-go\u5f00\u6e90\u9879\u76ee\uff1aGo\u8bed\u8a00\u5b9e\u73b0\u7684QUIC\u534f\u8bae\u670d\u52a1\u5668 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/14140.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"quic-go\u5f00\u6e90\u9879\u76ee\uff1aGo\u8bed\u8a00\u5b9e\u73b0\u7684QUIC\u534f\u8bae\u670d\u52a1\u5668 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1.4k\u6b21\uff0c\u70b9\u8d5e7\u6b21\uff0c\u6536\u85cf11\u6b21\u3002\u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90\uff0c\u70b9\u51fb\u83b7\u53d6  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