{"id":1010,"date":"2026-08-27T15:33:59","date_gmt":"2026-08-27T15:33:59","guid":{"rendered":"https:\/\/boochlin.com\/?p=1010"},"modified":"2026-09-19T19:27:38","modified_gmt":"2026-09-19T19:27:38","slug":"android-%e7%88%9b%e8%a3%9d%e7%bd%ae%e6%83%b3%e8%b7%91%e4%ba%ba%e8%87%89%e8%be%a8%e8%ad%98-%e7%ac%ac-12-%e7%af%87-%e8%aa%aa%e5%88%b0%e5%ba%95%e9%82%84%e6%98%af%e4%b8%80%e5%8f%b0iot","status":"publish","type":"post","link":"https:\/\/boochlin.com\/?p=1010","title":{"rendered":"Android \u721b\u88dd\u7f6e\u60f3\u8dd1\u4eba\u81c9\u8fa8\u8b5812 \u2013 \u8aaa\u5230\u5e95\u9084\u662f\u4e00\u53f0 IOT\uff1aWebSocket \u7bc7"},"content":{"rendered":"<blockquote>\n<p><strong>\u300c\u5728\u767e\u5143\u7d1a\u9580\u7981\u6a5f\u4e0a\u505a\u7db2\u8def\u901a\u8a0a\uff0c\u6700\u5929\u771f\u7684\u60f3\u6cd5\u5c31\u662f\u4ee5\u70ba\u7db2\u8def\u6c38\u9060\u5f88\u9806\uff1b\u771f\u6b63\u7684\u5de5\u696d\u7d1a\u67b6\u69cb\uff0c\u662f\u628a\u6bcf\u4e00\u5929\u90fd\u7576\u4f5c\u300e\u96a8\u6642\u6703\u65b7\u7db2\u3001\u96a8\u6642\u6703\u88ab\u62d4\u63d2\u982d\u300f\u7684\u4e16\u754c\u672b\u65e5\u4f86\u8a2d\u8a08\u3002\u300d<\/strong><\/p>\n<\/blockquote>\n<p><img decoding=\"async\" src=\"..\/..\/assets\/images\/blog12_breaking_bad_cartoon_1787842240243.jpg\" alt=\"\"><\/p>\n<p>\u524d\u9762\u5e7e\u7bc7\u6211\u5011\u628a\u9ad8\u901a\u9a4d\u9f8d QM215\uff084 \u9846 A53\u30012GB RAM\uff09\u7684\u7cfb\u7d71\u7626\u8eab\u8207\u76f8\u6a5f\u96f6\u8907\u88fd\u69a8\u5230\u4e86\u6975\u81f4\u3002<\/p>\n<p>\u4f46\u7576\u9580\u7981\u6a5f\u639b\u4e0a\u5de5\u5ee0\u5927\u9580\u6642\uff0c\u73fe\u5834\u7684\u7db2\u8def\u6bd4\u6676\u7247\u66f4\u6b98\u9177\uff1a\u88dd\u7f6e\u8eb2\u5728\u4f01\u696d\u5167\u7db2\u6df1\u8655\uff08<code>192.168.1.X<\/code> \u7121\u516c\u7db2 IP\uff09\u3001\u7db2\u8def\u7dda\u96a8\u6642\u88ab\u62d4\u3001DNS \u52d5\u8f12\u5361\u6b7b 30 \u79d2\u3001\u96f2\u7aef\u5f8c\u53f0\u96a8\u6642\u53ef\u80fd\u639b\u6389\u91cd\u555f\u3002<\/p>\n<p>\u5728\u908a\u7de3 IoT \u7cfb\u7d71\u4e2d\uff0cWebSocket \u8207 RESTful API \u5230\u5e95\u8a72\u5982\u4f55\u7cbe\u6e96\u5206\u5de5\uff0c\u505a\u5230\u300c0.1 \u79d2\u5373\u6642\u958b\u9580\u3001\u96f6\u8a18\u61b6\u9ad4\u8ca0\u64d4\u3001\u65b7\u7db2 3 \u5929\u4e5f\u80fd\u7a69\u5065\u91cd\u9023\u300d\uff1f<\/p>\n<hr>\n<h2>\u4e00\u3001 \u70ba\u4ec0\u9ebc\u5fc5\u9808\u7528 WebSocket\uff1f<\/h2>\n<p>\u5728\u908a\u7de3\u88dd\u7f6e\u4e2d\uff0c\u50b3\u7d71 HTTP \u77ed\u8f2a\u8a62\uff08Polling\uff09\u5728\u5de5\u5ee0\u73fe\u5834\u6703\u7acb\u523b\u9047\u5230\u5169\u5927\u6b7b\u7a74\uff1a<\/p>\n<h3>1. \u5ef6\u9072\u8207\u4f3a\u670d\u5668\u7576\u6a5f\u7684\u6b7b\u5faa\u74b0<\/h3>\n<ul>\n<li><strong>5 \u79d2\u8f2a\u8a62\u4e00\u6b21<\/strong>\uff1a\u8a2a\u5ba2\u7ad9\u5728\u9580\u53e3\u6309\u9234\uff0c\u5e73\u5747\u8981\u4e7e\u7b49 2.5 \u79d2\u9580\u624d\u6703\u958b\uff0c\u9ad4\u9a57\u6975\u5dee\u3002<\/li>\n<li><strong>200ms \u8f2a\u8a62\u4e00\u6b21<\/strong>\uff1a\u5168\u5ee0 100 \u53f0\u88dd\u7f6e\u6bcf\u79d2\u7522\u751f 500 \u6b21\u8acb\u6c42\uff0c\u9ad8\u9054 4 \u500b RTT \u7684 TCP\/TLS \u4ea4\u63e1\u77ac\u9593\u6253\u7206\u5730\u7aef\u7684\u5c0f\u4f3a\u670d\u5668\u3002<\/li>\n<\/ul>\n<h3>2. \u5167\u7db2 NAT \u7a7f\u900f\u56f0\u5883<\/h3>\n<p>\u9580\u7981\u6a5f\u6c92\u6709\u516c\u7db2 IP\uff0c\u96f2\u7aef\u4f3a\u670d\u5668\u5b8c\u5168\u7121\u6cd5\u4e3b\u52d5\u767c\u8d77 HTTP POST \u767c\u9001\u958b\u9580\u6307\u4ee4\u3002\u88dd\u7f6e\u5fc5\u9808\u5728\u958b\u6a5f\u6642\u4e3b\u52d5\u5411\u96f2\u7aef\u4f3a\u670d\u5668\u5efa\u7acb WebSocket \u9577\u9023\u7dda\uff0c\u5728\u9632\u706b\u7246\u4e0a\u947f\u51fa\u6c38\u4e45\u96d9\u5411\u901a\u9053\uff08Pinhole\uff09\uff1a<\/p>\n<ul>\n<li><strong>\u4e0b\u884c\u5373\u6642\u63a7\u5236<\/strong>\uff1a0.1 \u79d2\u9060\u7aef\u958b\u9580\u3001\u5373\u6642\u64a4\u92b7\u96e2\u8077\u54e1\u5de5\u7279\u5fb5\u3001\u8a2a\u5ba2\u52d5\u614b\u5bc6\u78bc\u9a57\u8b49\u3002<\/li>\n<li><strong>\u4e0a\u884c\u5373\u6642\u56de\u5831<\/strong>\uff1a\u5237\u81c9\u6253\u5361\u6293\u62cd\u7167\u5373\u6642\u4e0a\u50b3\u3001\u9632\u62c6\u6a5f\u8b66\u5831\u3002<\/li>\n<li><strong>\u901a\u9053\u4fdd\u6d3b<\/strong>\uff1a15 \u79d2\u8f15\u91cf\u5fc3\u8df3\u7dad\u6301\u9632\u706b\u7246\u901a\u9053\u66a2\u901a\u3002<\/li>\n<\/ul>\n<hr>\n<h2>\u4e8c\u3001 \u70ba\u4ec0\u9ebc\u5927\u6a94\u6848\u4e0d\u80fd\u9032 WebSocket\uff1fRESTful API \u7684\u4e0d\u53ef\u66ff\u4ee3\u6027<\/h2>\n<p>\u5982\u679c\u628a\u6240\u6709\u529f\u80fd\u5168\u90e8\u585e\u9032 WebSocket\uff0c\u73fe\u5834\u6703\u7acb\u523b\u5f15\u767c\u56b4\u91cd\u7684\u958b\u9580\u5361\u6b7b\u4e8b\u6545\u3002RESTful API \u6709\u5176\u5c08\u5c6c\u6230\u5834\uff1a<\/p>\n<h3>1. \u7b2c\u4e09\u65b9\u7cfb\u7d71\uff08HR \u8003\u52e4 \/ ERP\uff09\u6a19\u6e96\u7121\u7e2b\u5c0d\u63a5<\/h3>\n<p>\u7531\u5f8c\u53f0\u4f3a\u670d\u5668\u63d0\u4f9b\u6a19\u6e96 RESTful API\uff0c\u5ba2\u6236\u7528\u6700\u719f\u6089\u7684 HTTP \u5373\u53ef\u4e32\u63a5\uff0c\u7121\u9700\u5728\u4ed6\u5011\u7684\u7cfb\u7d71\u7dad\u8b77\u8106\u5f31\u7684\u9577\u9023\u7dda\u3002<\/p>\n<h3>2. 50MB \u97cc\u9ad4\u5347\u7d1a\u8207\u5927\u6a94\u6848\u4e0b\u8f09<\/h3>\n<p>50MB APK \u66f4\u65b0\u6a94\u30013D \u93e1\u982d\u97cc\u9ad4\u8207\u9ad8\u89e3\u6790\u5ea6\u7167\u7247\u6279\u6b21\u4e0b\u8f09\uff0c\u5fc5\u9808\u8d70\u6a19\u6e96 HTTP \u9032\u884c\u5206\u6bb5\u6d41\u5f0f\u50b3\u8f38\u8207\u65b7\u9ede\u7e8c\u50b3\u3002<\/p>\n<h3>3. \u9632\u79a6 TCP \u968a\u9996\u963b\u585e\uff08\u9ad8\u901f\u516c\u8def\u585e\u8eca\u6548\u61c9\uff09<\/h3>\n<p>WebSocket \u5e95\u5c64\u70ba\u55ae\u4e00 TCP \u9023\u7dda\u3002\u82e5\u5c07 50MB \u97cc\u9ad4\u585e\u9032 WebSocket\uff0c\u6703\u77ac\u9593\u4f54\u6eff\u6574\u689d\u9023\u7dda\uff1b\u6b64\u6642\u82e5\u7a81\u767c\u300c\u7dca\u6025\u958b\u9580\u300d\u6307\u4ee4\uff0c<strong>\u958b\u9580\u5c01\u5305\u88ab\u8feb\u6392\u5728 50MB \u6a94\u6848\u5f8c\u9762\u7b49\u5e7e\u5341\u79d2\uff08Head-of-Line Blocking\uff09<\/strong>\uff0c\u5c0e\u81f4\u5927\u9580\u5361\u6b7b\u6253\u4e0d\u958b\uff01<\/p>\n<p><strong>\u5c07\u300c\u5927\u6a94\u6848\u50b3\u8f38\uff08HTTP REST\uff09\u300d\u8207\u300c\u5373\u6642\u4fe1\u4ee4\uff08WebSocket\uff09\u300d\u7269\u7406\u9694\u96e2\uff0c\u662f\u4fdd\u8b49 0.1 \u79d2\u79d2\u958b\u9580\u7684\u95dc\u9375\u5e95\u7dda\u3002<\/strong><\/p>\n<hr>\n<h2>\u4e09\u3001 \u8cc7\u6599\u50b3\u8f38\u5927\u7626\u8eab\uff1a\u70ba\u4f55\u9078\u300cProtobuf over WebSocket\u300d\uff1f<\/h2>\n<h3>1. Base64 \u8b93\u8a18\u61b6\u9ad4\u76f4\u63a5\u7206\u70b8<\/h3>\n<p>\u65e9\u671f\u5c07\u73fe\u5834\u7167\u7247\u8f49\u70ba Base64 \u5b57\u4e32\u585e\u9032 JSON \u50b3\u8f38\uff1a<\/p>\n<ul>\n<li>\u9ad4\u7a4d\u81a8\u8139 33%\uff0c\u6d6a\u8cbb\u7db2\u8def\u983b\u5bec\u3002<\/li>\n<li>\u4e00\u5f35 150KB JPEG \u8f49\u6210 Base64 \u6703\u5728 Java \u8a18\u61b6\u9ad4\u7522\u751f 200KB \u7684 String \u5783\u573e\u3002\u5c16\u5cf0\u671f\u983b\u7e41\u89f8\u767c GC\uff0c\u76f8\u6a5f\u9810\u89bd\u76f4\u63a5\u5f9e 30fps \u6389\u5230\u500b\u4f4d\u6578\u5c0e\u81f4\u4eba\u81c9\u4e1f\u5e40\u3002<\/li>\n<\/ul>\n<h3>2. \u6700\u4f73\u89e3\u7b54\uff1aProtobuf over WebSocket \u5168\u7aef\u5927\u4e00\u7d71<\/h3>\n<p>\u7dad\u6301\u55ae\u4e00 WebSocket \u57e0\u865f\uff0cPayload \u5168\u9762\u63db\u6210 Google Protocol Buffers\uff1a<\/p>\n<pre><code class=\"hljs language-protobuf\">syntax = <span class=\"hljs-string\">&quot;proto3&quot;<\/span>;\n<span class=\"hljs-keyword\">package<\/span> com.edge.ai.gate;\n\n<span class=\"hljs-keyword\">message <\/span><span class=\"hljs-title class_\">PassEventPacket<\/span> {\n  <span class=\"hljs-type\">string<\/span> device_id = <span class=\"hljs-number\">1<\/span>;\n  <span class=\"hljs-type\">int64<\/span> timestamp = <span class=\"hljs-number\">2<\/span>;\n  <span class=\"hljs-type\">string<\/span> user_id = <span class=\"hljs-number\">3<\/span>;\n  <span class=\"hljs-type\">bool<\/span> is_authorized = <span class=\"hljs-number\">4<\/span>;\n\n  <span class=\"hljs-comment\">\/\/ \u539f\u751f\u4e8c\u9032\u4f4d byte \u9663\u5217\u76f4\u5165\uff0c0 Base64\u30010 \u984d\u5916\u5b57\u4e32\u8a18\u61b6\u9ad4\u5783\u573e\uff01<\/span>\n  <span class=\"hljs-type\">bytes<\/span> rgb_image = <span class=\"hljs-number\">5<\/span>;\n  <span class=\"hljs-type\">bytes<\/span> ir_image = <span class=\"hljs-number\">6<\/span>;\n  <span class=\"hljs-type\">bytes<\/span> depth_image = <span class=\"hljs-number\">7<\/span>;\n}<\/code><\/pre>\n<ul>\n<li><strong>\u9580\u7981\u6a5f\u7aef<\/strong>\uff1aJPEG \u4f4d\u5143\u7d44\u76f4\u63a5\u585e\u9032 Protobuf\uff0cJava \u8a18\u61b6\u9ad4\u5783\u573e\u6b78\u96f6\uff0c\u5c01\u5305\u6bd4 JSON \u5c0f 60%\u3002<\/li>\n<li><strong>\u8b66\u885b\u5ba4 Web \u7aef<\/strong>\uff1aChrome \u700f\u89bd\u5668\u539f\u751f <code>new WebSocket()<\/code> \u76f4\u9023\uff0c\u639b\u8f09 <code>protobuf.js<\/code> \u4e00\u884c\u7a0b\u5f0f\u78bc\u89e3\u78bc\uff0c<strong>\u96f6\u984d\u5916\u4ee3\u7406\u4f9d\u8cf4\uff01<\/strong><\/li>\n<\/ul>\n<hr>\n<h2>\u56db\u3001 \u908a\u7de3\u88dd\u7f6e\u7684\u7a69\u5b9a\u6027\u5be6\u6230\uff1a\u55ae\u57f7\u884c\u7dd2\u4e8b\u4ef6\u6392\u968a<\/h2>\n<p>\u7db2\u8def\u9023\u7dda\uff08DNS \u89e3\u6790\u3001TCP \u4ea4\u63e1\u3001\u5fc3\u8df3\uff09\u4ea4\u7531\u5c08\u5c6c <code>HandlerThread<\/code> \u5728\u80cc\u666f\u55ae\u884c\u9053\u4f9d\u5e8f\u6392\u968a\uff1a<\/p>\n<ul>\n<li><strong>UI \u96f6\u5ef6\u9072<\/strong>\uff1aUI \u547c\u53eb\u50c5\u4e1f Message \u6392\u968a\uff0c0.01ms \u7acb\u523b\u8fd4\u56de\u3002<\/li>\n<li><strong>\u5167\u90e8\u72c0\u614b\u5c01\u9589<\/strong>\uff1aSocket \u5be6\u9ad4\u5b8c\u5168\u5c01\u88dd\u5728\u80cc\u666f\u57f7\u884c\u7dd2\u4e2d\uff0c\u514d\u9664\u8907\u96dc\u8de8\u57f7\u884c\u7dd2\u52a0\u9396\u3002<\/li>\n<\/ul>\n<pre><code class=\"hljs language-java\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">WebSocketWorkerManager<\/span> {\n    <span class=\"hljs-keyword\">private<\/span> HandlerThread mWorkerThread;\n    <span class=\"hljs-keyword\">private<\/span> Handler mWorkerHandler;\n\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-type\">void<\/span> <span class=\"hljs-title function_\">init<\/span><span class=\"hljs-params\">()<\/span> {\n        mWorkerThread = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">HandlerThread<\/span>(<span class=\"hljs-string\">&quot;ws-worker-thread&quot;<\/span>);\n        mWorkerThread.start();\n        mWorkerHandler = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Handler<\/span>(mWorkerThread.getLooper()) {\n            <span class=\"hljs-meta\">@Override<\/span>\n            <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-type\">void<\/span> <span class=\"hljs-title function_\">handleMessage<\/span><span class=\"hljs-params\">(Message msg)<\/span> {\n                <span class=\"hljs-comment\">\/\/ \u6240\u6709\u7db2\u8def\u9023\u7dda\u3001\u65b7\u7dda\u91cd\u8a66\u8207\u8cc7\u6599\u767c\u9001\u5168\u5728\u55ae\u4e00\u57f7\u884c\u7dd2\u4f9d\u5e8f\u57f7\u884c<\/span>\n            }\n        };\n    }\n}<\/code><\/pre>\n<hr>\n<h2>\u4e94\u3001 \u5de5\u696d\u7d1a\u96e2\u7dda\u81ea\u6551\uff1a\u65b7\u7db2 3 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SQLite\u3002\u9023\u7dda\u6062\u5fa9\u5f8c\u4ee5\u300c\u6279\u6b21 20 \u7b46\u300d\u975e\u540c\u6b65\u56de\u50b3\uff0c\u7d55\u4e0d\u4f54\u7528\u76f8\u6a5f\u63a8\u8ad6\u8a18\u61b6\u9ad4\u3002<\/li>\n<li><strong>\u767d\u540d\u55ae\u96e2\u7dda\u8a8d\u8b49<\/strong>\uff1a\u7279\u5fb5\u5eab 100% \u672c\u5730\u5132\u5b58\u3002\u5373\u4fbf\u7db2\u8def\u5fb9\u5e95\u65b7\u7d55\uff0c\u9580\u7981\u6a5f\u4f9d\u7136\u80fd\u4ee5 3ms \u901f\u5ea6\u79d2\u7d1a\u5237\u81c9\u958b\u9580\u3002<\/li>\n<\/ol>\n<hr>\n<h2>\u5de5\u63a7 IoT \u901a\u8a0a\u9435\u5247\u8207\u6536\u5de5<\/h2>\n<ol>\n<li><strong>\u4fe1\u4ee4\u8207\u5927\u6a94\u5fc5\u9808\u7269\u7406\u5206\u6d41<\/strong>\uff1aWebSocket \u53ea\u50b3\u4fe1\u4ee4\u8207\u8f15\u91cf\u4e8b\u4ef6\uff0c\u5927\u6a94\u6848\u5805\u6c7a\u8d70 HTTP\u3002<\/li>\n<li><strong>\u4e8c\u9032\u4f4d\u5354\u5b9a\u662f\u8a18\u61b6\u9ad4\u6551\u661f<\/strong>\uff1a\u62d2\u7d55 JSON \u8207 Base64\uff0cProtobuf \u662f\u5f31\u6676\u7247\u7dad\u6301 0-GC 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