{"id":917,"date":"2022-02-23T23:14:51","date_gmt":"2022-02-23T15:14:51","guid":{"rendered":"https:\/\/www.xianwaizhiyin.net\/?p=917"},"modified":"2022-06-11T02:42:05","modified_gmt":"2022-06-10T18:42:05","slug":"rtmp%e5%8d%8f%e8%ae%ae%e5%88%86%e6%9e%90-handshake","status":"publish","type":"post","link":"https:\/\/www.xianwaizhiyin.net\/?p=917","title":{"rendered":"RTMP\u534f\u8bae\u5206\u6790-handshake"},"content":{"rendered":"\n<p>rtmp \u662f\u6bd4\u8f83\u6d41\u884c\u7684\u76f4\u64ad\u534f\u8bae\uff0c\u540c\u65f6\u4e5f\u6bd4\u8f83\u53e4\u8001\u3002rtmp \u7684\u6807\u51c6\u6587\u6863 \u4e0b\u8f7d\u5730\u5740\uff1a<a href=\"https:\/\/pan.baidu.com\/s\/1QrlIQM_JeSxH7CvIu9Wagw\">\u767e\u5ea6\u7f51\u76d8<\/a>\uff0c\u63d0\u53d6\u7801\uff1axeiu<\/p>\n\n\n\n<p>RTMP\u6807\u51c6 \u5e76\u6ca1\u6709\u89c4\u5b9a \u5e95\u5c42\u534f\u8bae \u662fTCP \u8fd8\u662fUDP\uff0c\u8fd8\u662f\u5176\u4ed6\u3002\u4e0d\u8fc7\u901a\u5e38RTMP\u670d\u52a1\u5668\u5ba2\u6237\u7aef\u90fd\u662f\u57fa\u4e8e TCP \u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n<p>\u672c\u6587\u4e3b\u8981\u8bb2\u89e3\uff0cRTMP\u534f\u8bae\u91cc\u9762\u7684 handshake\uff08\u63e1\u624b\uff09\u6d41\u7a0b\uff0c\u673a\u5236\uff0c\u4ee5\u53ca\u903b\u8f91\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u670d\u52a1\u5668\u91c7\u7528 SRS \u642d\u5efa\uff0c\u5ba2\u6237\u7aef\u4f7f\u7528 FFmpeg \u63a8\u6d41\uff0c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code class=\"prettyprint\" >ffmpeg.exe -i a.mp4  -c copy -f flv rtmp:\/\/192.168.0.123\/live\/livestream<\/code><\/pre>\n\n\n\n<p>\u4e0b\u56fe\u7684\u6d41\u7a0b\u6458\u53d6\u4e8e\u6807\u51c6\u6587\u6863\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"699\" height=\"594\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/02\/rtmp-handshake-1-1.png\" alt=\"\" class=\"wp-image-921\"\/><\/figure>\n\n\n\n<p>\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0cRTMP \u94fe\u63a5\u7ecf\u5386 3 \u4e2a \u72b6\u6001\u3002<\/p>\n\n\n\n<p><strong>1\uff0cUninitialized<\/strong>\uff0c\u672a\u521d\u59cb\u5316\u72b6\u6001\uff0c\u53ea\u8981\u6ca1\u53d1 C0 \u6216\u8005 S0 \u6570\u636e\u5305\uff0c\u90fd\u662f\u521d\u59cb\u5316\u72b6\u6001\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u8bb2\u89e3\u4e00\u4e0b C0 \u8ddf S0 \u662f\u4ec0\u4e48\uff0c\u5c31\u662f\u4e00\u4e2a8\u4f4d\u7684\u6570\u636e\uff0c\u5355\u5b57\u8282\uff0c\u4ee3\u8868 RTMP \u534f\u8bae\u7684\u7248\u672c\u53f7\u3002C \u662fclient \uff0cS \u4ee3\u8868 Server<\/p>\n\n\n\n<p>\u53d1\u7248\u672c\u6709\u4ec0\u4e48\u7528\u5462\uff1f<\/p>\n\n\n\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5982\u679cC0 \u662f 02 \u4ee3\u8868RTMP2.0 \u7248\u672c\uff0c\u4f46\u662f\u5982\u679c \u670d\u52a1\u5668 \u53ea\u652f\u6301 3.0 \u7248\u672c\u7684RTMP\uff0c\u670d\u52a1\u5668\u5c31\u4f1a\u91c7\u53d6\u5408\u9002\u7684\u52a8\u4f5c\uff0c\u901a\u5e38\u505a\u6cd5\u662f\u7ec8\u7ed3\u8fd9\u4e2a\u94fe\u63a5\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u91c7\u53d6\u5408\u9002\u7684\u52a8\u4f5c\uff0c\u901a\u5e38\u505a\u6cd5\u662f\u7ec8\u7ed3\u8fd9\u4e2a\u94fe\u63a5<\/p><\/blockquote>\n\n\n\n<p>\u8fd9\u53e5\u8bdd\uff0c\u662f\u5bf9\u5e94\u7684\u6807\u51c6\u6587\u6863\u7684\u82f1\u6587\u7ffb\u8bd1\u3002\u6211\u4e2a\u4eba\u7406\u89e3\u4e00\u4e0b\uff0c\u91c7\u53d6\u5408\u9002\u7684\u52a8\u4f5c\uff0c\u5e94\u8be5\u662f\u76f4\u63a5close TCP \u7684sockefd \u6765\u7ec8\u7ed3\u94fe\u63a5\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5 \u5982\u679c\u670d\u52a1\u5668\u53d1 S0 \u56de\u53bb\u4e86\uff0c\u901a\u5e38\u8ddf C0 \u4e00\u6837\uff0c\u5176\u5b9e\u6211\u4e5f\u4e0d\u592a\u61c2\uff0c\u4e3a\u4ec0\u4e48\u8981\u53d1 S0 \u56de\u53bb\uff0c\u65e2\u7136\u90fd\u662f\u8ddfC0\u4e00\u6837\uff0c\u5c11\u4f20\u4e00\u4e2a\u5b57\u8282\u4e0d\u662f\u66f4\u597d\uff1f<\/p>\n\n\n\n<p>\u4e0d\u8fc7\u4ed6\u534f\u8bae\u5c31\u8fd9\u4e48\u8bbe\u8ba1\u7684\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a RTMP \u662f\u57fa\u4e8e TCP \u5b9e\u73b0\uff0c\u6240\u4ee5 C0 \u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a \u5355\u5b57\u8282\u7684 TCP \u5305\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"990\" height=\"741\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/02\/rtmp-handshake-1-2.png\" alt=\"\" class=\"wp-image-922\"\/><\/figure>\n\n\n\n<p><strong>2\uff0cVersion sent<\/strong>\uff0c\u8fd9\u4e2a\u72b6\u6001\u662f\u5ba2\u6237\u7aef\u6536\u5230 S0 \u65f6\u5019\u5c31\u4f1a\u5207\u6362\u5230\u8fd9\u4e2a\u72b6\u6001\u3002\u5bf9\u670d\u52a1\u5668\u800c\u5df2\uff0c\u6536\u5230 C0 \u5c31\u4f1a\u5207\u6362\u5230\u8fd9\u4e2a\u72b6\u6001\u3002<\/p>\n\n\n\n<p>\u4f46\u5b9e\u9645\u4e0a\u5927\u591a\u6570\u7684\u5ba2\u6237\u7aef\u5b9e\u73b0\uff0cC0 + C1 \u662f\u540c\u65f6\u53d1\u9001\u7684\uff0c\u6240\u4ee5 <strong>Version sent<\/strong> \u4e0d\u5b58\u5728\uff0c\u76f4\u63a5\u4f1a\u8df3\u5230 <strong>ACK sent<\/strong> \u72b6\u6001\u3002<\/p>\n\n\n\n<p>\u90a3\u4e2a\u6d41\u7a0b\u56fe\uff0cC0+C1 \u540c\u65f6\u53d1\u9001\u4e0d\u4f1a\u5bfc\u81f4\u95ee\u9898\u3002\u540c\u65f6\u53d1\u9001\u53ef\u4ee5\u63d0\u4ea4\u6548\u7387\uff0c\u4e0d\u9700\u8981\u7b49 S0 \u5230\u4e86 \u518d\u53d1 C1\u3002<\/p>\n\n\n\n<p><strong>3\uff0cAck sent<\/strong> \uff0c\u5ba2\u6237\u7aef\u53d1\u9001 C2 \u4e4b\u540e\u5c31\u4f1a\u53d8\u6210 <code class=\"prettyprint\" >Ack sent<\/code> \u72b6\u6001\uff0c\u670d\u52a1\u5668\u53d1 S2 \u4e4b\u540e\u5c31\u4f1a\u53d8\u6210 <code>Ack sent<\/code> \u72b6\u6001\u3002<\/p>\n\n\n\n<p><strong>4\uff0cHandshake Done<\/strong>\uff0c\u63e1\u624b\u5b8c\u6210\u72b6\u6001\uff0c\u5ba2\u6237\u7aef \u6536\u5230 S2 \u5c31\u63e1\u624b\u5b8c\u6210\u4e86\uff0c\u670d\u52a1\u5668\u662f \u6536\u5230 C2\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>google_ads_content<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>RTMP \u7684\u63e1\u624b\u6d41\u7a0b\u5c31\u662f\u8fd9\u6837\uff0cC0\uff0cS0 \u4e0a\u9762\u5df2\u7ecf\u8bb2\u4e86\uff0c\u5c31\u662f\u534f\u5546\u7248\u672c\u53f7\u3002\u63a5\u4e0b\u6765\u8bb2\u8bb2 C1 \u8ddf S1 \u7684\u683c\u5f0f\uff0c\u5982\u4e0b\u56fe\uff1a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"652\" height=\"276\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/02\/rtmp-handshake-1-3.png\" alt=\"\" class=\"wp-image-923\"\/><\/figure>\n\n\n\n<p>RTMP \u89c4\u5b9a\uff0c\u6240\u6709\u6574\u5f62\u5b57\u6bb5\u90fd\u662f\u7f51\u7edc\u5b57\u8282\u5e8f\uff0c\u4e5f\u5c31\u662f\u5927\u7aef\u5e8f\u3002\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\uff0cC1 \u8ddf S1 \u683c\u5f0f\u662f\u4e00\u6837\u7684\uff0c\u90fd\u53ea\u6709 3\u4e2a\u5b57\u6bb5\u3002<\/p>\n\n\n\n<p>1\uff0ctime\uff0c4\u5b57\u8282\u7684\u65f6\u95f4\u6233\u3002<\/p>\n\n\n\n<p>2\uff0czero\uff0c4\u5b57\u8282\u76840\uff0c\u586b\u5145\u5b57\u6bb5\uff0c\u4e0d\u7528\u7ba1\u3002<\/p>\n\n\n\n<p>3\uff0crandom bytes\uff0c\u968f\u673a\u6570\uff0c1528\u4e2a\u5b57\u8282\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u52a0\u8d77\u6765\uff0cC1 \u8fd9\u4e2a\u6570\u636e\u5305\u4e00\u5171\u662f 1536 \u5b57\u8282\uff0c\u4f1a\u653e\u5728 TCP body \u91cc\u9762\u4f20\u8f93\uff0cTCP MSS\u673a\u5236\u5bfc\u81f4 TCP body \u53ea\u80fd\u653e 1460 \u5b57\u8282\uff0c\u6240\u4ee5\u4f1a\u5206\u6210\u4e24\u4e2a TCP \u5305\u53d1\u9001\u3002\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1070\" height=\"553\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/02\/rtmp-handshake-1-4.png\" alt=\"\" class=\"wp-image-919\"\/><\/figure>\n\n\n\n<p>\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u5230\uff0c\u4e24\u4e2a TCP \u5305\u624d\u5408\u6210\u4e00\u4e2a RTMP \u5305\uff0c\u7b2c\u4e00\u4e2aTCP \u5305\u7684body \u662f 1460 \u5b57\u8282\uff0c\u7b2c\u4e8c\u4e2aTCP \u5305\u7684body \u662f 77 \u5b57\u8282\uff0c\u52a0\u8d77\u6765\u662f 1537\u5b57\u8282\uff0c\u6bd4 C1 \u591a\u4e86\u4e00\u4e2a\u5b57\u8282\uff0c\u4e3a\u4ec0\u4e48\uff1f\u56e0\u4e3a\u591a\u7684\u4e00\u4e2a\u5b57\u8282\u662f C0 \u7684\uff0cC0+C1\u540c\u65f6\u53d1\u9001\u3002<\/p>\n\n\n\n<p>C1 \u91cc\u9762\u7684 time \u5b57\u6bb5\u4e3b\u8981\u662f\u7528\u4e8e\u8ba1\u7b97 RTT \u65f6\u95f4\u7684\uff0c\u628a\u4e00\u4e2a\u672c\u5730\u7684\u65f6\u95f4\u653e\u5728 C1 \u7684time\u91cc\u9762\uff0c\u7136\u540e \u670d\u52a1\u5668 \u6536\u5230 C0+C1 \u4e4b\u540e\uff0c\u4f1a\u7acb\u9a6c\u53d1 S2 \u56de\u53bb\uff0cS2 \u91cc\u9762\u6709\u4e4b\u524d\u7684\u672c\u5730\u65f6\u95f4\uff0c\u8fd9\u6837\u5ba2\u6237\u7aef\u5c31\u80fd\u8ba1\u7b97\u51fa\u4e00\u4e2a\u6765\u56de\u7684\u65f6\u95f4\u3002S1 \u7684\u539f\u7406\u8ddf C1 \u4e00\u6837\u3002<\/p>\n\n\n\n<p>\u7136\u540e\u968f\u673a\u6570\u5e94\u8be5\u662f\u7528\u6765\u52a0\u5bc6\u7684\uff0c\u540e\u7eed\u8865\u5145\uff0c\u6211\u4e5f\u4e0d\u592a\u6e05\u695a\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u6700\u540e\u8fd8\u5269\u4e00\u4e2a\u5305\u672a\u5206\u6790\uff0c\u5c31\u662f C2 \u8ddf S2\uff0c\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"652\" height=\"292\" src=\"https:\/\/www.xianwaizhiyin.net\/wp-content\/uploads\/2022\/02\/rtmp-handshake-1-5.png\" alt=\"\" class=\"wp-image-920\"\/><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u6ce8\u610f\uff0c\u5ba2\u6237\u7aef\u5fc5\u987b\u6536\u5230 S1 \u4e4b\u540e\u624d\u80fd\u53d1 C2\uff0c\u56e0\u4e3a\u5ba2\u6237\u7aef\u9700\u8981\u628a S1 \u5305\u91cc\u7684 time \u586b\u5230 C2 \u7684time\u91cc\u9762\u3002<\/p>\n\n\n\n<p>\u670d\u52a1\u5668\u5fc5\u987b\u6536\u5230C1\u4e4b\u540e\u624d\u80fd\u53d1 S2\uff0c\u56e0\u4e3a\u670d\u52a1\u5668\u9700\u8981\u628a C1 \u5305\u91cc\u7684 time \u586b\u5230 S2 \u7684time\u91cc\u9762\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5 C2\/S2 \u91cc\u9762\u7684 time \u5b57\u6bb5\u7684\u610f\u4e49\u5f88\u660e\u663e\uff0c\u5c31\u662f\u5bf9\u9762\u7684\u672c\u5730\u65f6\u95f4\u3002\u7136\u540e time2 \u662f\u81ea\u5df1\u7684\u672c\u5730\u65f6\u95f4\u3002<\/p>\n\n\n\n<p>\u6700\u540e C2 \u91cc\u9762\u6709\u4e2a random echo\uff0c\u5b58\u7684\u662f\u670d\u52a1\u5668\u5728S1\u53d1\u7684\u7684\u968f\u673a\u6570\uff0c\u53c8echo \u56de\u53bb\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u5176\u5b9e\u6211\u4e5f\u4e0d\u6e05\u695a\u4e3a\u4ec0\u4e48\u8981 echo \u968f\u673a\u6570\u56de\u53bb\uff0c\u56e0\u4e3a\u90fd\u5f00\u59cb\u53d1C2\u4e86\uff0c\u5c31\u4ee3\u8868\u5ba2\u6237\u7aef\u6536\u5230\u670d\u52a1\u5668\u53d1\u7684 S1 \u7684\u968f\u673a\u6570\u4e86\uff0c\u800c\u4e14\u670d\u52a1\u5668\u6536\u5230C2\u4e4b\u540e\uff0c\u4e5f\u80fd\u786e\u8ba4\u5ba2\u6237\u7aef\u5df2\u7ecf\u62ff\u5230\u4e86S1\u7684\u968f\u673a\u6570\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0cRTMP \u4e3a\u4ec0\u4e48\u8981 echo \u968f\u673a\u6570\u6211\u76ee\u524d\u4e0d\u592a\u6e05\u695a\uff0c\u9700\u8981\u770b\u7ee7\u7eed\u770b\u6e90\u7801\u5b9e\u73b0\uff0c\u624d\u77e5\u9053\u968f\u673a\u6570\u7684\u5177\u4f53\u4f5c\u7528\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>\u00a9\u7248\u6743\u6240\u5c5e\uff1a\u77e5\u8bc6\u661f\u7403\uff1a\u5f26\u5916\u4e4b\u97f3\uff0cQQ\uff1a2338195090\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u7b14\u8005\u7684\u6c34\u5e73\u6709\u9650\uff0c \u52a0\u4e4b\u7f16\u5199\u7684\u540c\u65f6\u8fd8\u8981\u53c2\u4e0e\u5f00\u53d1\u5de5\u4f5c\uff0c\u6587\u4e2d\u96be\u514d\u4f1a\u51fa\u73b0\u4e00\u4e9b\u9519\u8bef\u6216\u8005\u4e0d\u51c6\u786e\u7684\u5730\u65b9\uff0c\u6073\u8bf7\u8bfb\u8005\u6279\u8bc4\u6307\u6b63\u3002\u5982\u679c\u8bfb\u8005\u6709\u4efb\u4f55\u5b9d\u8d35\u610f\u89c1\uff0c\u53ef\u4ee5\u52a0\u6211\u5fae\u4fe1 Loken1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>rtmp \u662f\u6bd4\u8f83\u6d41\u884c\u7684\u76f4\u64ad\u534f\u8bae\uff0c\u540c\u65f6\u4e5f\u6bd4\u8f83\u53e4\u8001\u3002rtmp \u7684\u6807\u51c6\u6587\u6863 \u4e0b\u8f7d\u5730\u5740\uff1a\u767e\u5ea6\u7f51\u76d8\uff0c\u63d0\u53d6\u7801\uff1axeiu R 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