{"id":6214,"date":"2025-06-01T14:31:53","date_gmt":"2025-06-04T06:34:52","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6214"},"modified":"2025-06-04T14:31:53","modified_gmt":"2025-06-04T06:34:52","slug":"%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8node-js%e6%9e%84%e5%bb%baudp%e5%ae%a2%e6%88%b7%e7%ab%af-%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/node-js\/%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8node-js%e6%9e%84%e5%bb%baudp%e5%ae%a2%e6%88%b7%e7%ab%af-%e6%9c%8d%e5%8a%a1%e5%99%a8\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3 Node.js\uff1a\u69cb\u5efa\u9ad8\u6548\u7684 UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668"},"content":{"rendered":"

<\/p>\n

\u4f7f\u7528 Node.js \u69cb\u5efa\u9ad8\u6548\u7684 UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668<\/h1>\n

Node.js \u662f\u4e00\u500b\u5f37\u5927\u4e14\u5ee3\u53d7\u6b61\u8fce\u7684 JavaScript \u57f7\u884c\u74b0\u5883\uff0c\u9069\u7528\u65bc\u69cb\u5efa\u5404\u7a2e\u7db2\u8def\u61c9\u7528\u7a0b\u5f0f\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5229\u7528 Node.js \u7684\u7db2\u8def\u6a21\u7d44\uff0c\u8f15\u9b06\u69cb\u5efa\u9ad8\u6548\u7684 UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u3002<\/p>\n

\u4ec0\u9ebc\u662f UDP\uff1f<\/h2>\n

UDP\uff08\u7528\u6236\u8cc7\u6599\u5831\u5354\u5b9a\uff09\u662f\u4e00\u7a2e\u91cd\u8981\u7684\u7db2\u8def\u5354\u5b9a\uff0c\u5ee3\u6cdb\u7528\u65bc\u9ad8\u6548\u7684\u8cc7\u6599\u50b3\u8f38\u3002\u8207 TCP\uff08\u50b3\u8f38\u63a7\u5236\u5354\u5b9a\uff09\u4e0d\u540c\uff0cUDP \u4e0d\u9700\u8981\u5efa\u7acb\u9023\u63a5\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u9700\u8981\u5feb\u901f\u50b3\u8f38\u5927\u91cf\u8cc7\u6599\u7684\u5834\u666f\u4e2d\u8868\u73fe\u512a\u7570\u3002\u96d6\u7136 UDP \u4e0d\u6703\u78ba\u8a8d\u8cc7\u6599\u7684\u9001\u9054\uff0c\u4f46\u5176\u4f4e\u5ef6\u9072\u7279\u6027\u4f7f\u5176\u6210\u70ba\u5373\u6642\u901a\u8a0a\u3001\u7dda\u4e0a\u904a\u6232\u7b49\u61c9\u7528\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n

Node.js \u4e2d\u7684\u7db2\u8def\u6a21\u7d44\u6982\u8ff0<\/h2>\n

Node.js \u7684\u7db2\u8def\u6a21\u7d44\u63d0\u4f9b\u4e86\u65b9\u4fbf\u7684 API\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5275\u5efa\u548c\u7ba1\u7406\u7db2\u8def\u9023\u63a5\u3002\u7121\u8ad6\u662f TCP \u9084\u662f UDP\uff0c\u9019\u500b\u6a21\u7d44\u90fd\u80fd\u5e6b\u52a9\u4f60\u5feb\u901f\u642d\u5efa\u4f3a\u670d\u5668\u548c\u5ba2\u6236\u7aef\u3002<\/p>\n

\u69cb\u5efa UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7684\u6b65\u9a5f<\/h2>\n

\u8981\u69cb\u5efa\u4e00\u500b\u7c21\u55ae\u7684 UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\uff0c\u6211\u5011\u9996\u5148\u9700\u8981\u5275\u5efa\u4e00\u500b UDP \u5957\u63a5\u5b57\uff0c\u7136\u5f8c\u7d81\u5b9a\u5230\u6307\u5b9a\u7684\u7aef\u53e3\u865f\u3002<\/p>\n

“`javascript
\nconst dgram = require(‘dgram’);
\nconst socket = dgram.createSocket(‘udp4’);<\/p>\n

socket.bind(1234, () => {
\n console.log(‘UDP \u4f3a\u670d\u5668\u5df2\u555f\u52d5\uff0c\u76e3\u807d\u7aef\u53e3 1234’);
\n});
\n“`<\/p>\n

\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 `send` \u65b9\u6cd5\u5c07\u8cc7\u6599\u767c\u9001\u5230\u6307\u5b9a\u7684\u5730\u5740\u548c\u7aef\u53e3\u3002<\/p>\n

“`javascript
\nconst message = Buffer.from(‘Hello World!’);<\/p>\n

socket.send(message, 0, message.length, 1234, ‘localhost’, (err) => {
\n if (err) {
\n console.log(‘\u767c\u9001\u932f\u8aa4:’, err);
\n } else {
\n console.log(‘\u8a0a\u606f\u5df2\u767c\u9001\uff01’);
\n }
\n});
\n“`<\/p>\n

\u6700\u5f8c\uff0c\u6211\u5011\u9700\u8981\u4f7f\u7528 `on` \u65b9\u6cd5\u4f86\u63a5\u6536\u4f86\u81ea\u5ba2\u6236\u7aef\u7684\u8cc7\u6599\u3002<\/p>\n

“`javascript
\nsocket.on(‘message’, (message, remote) => {
\n console.log(`\u63a5\u6536\u5230\u4f86\u81ea {remote.address}:<\/span>{remote.port} \u7684\u8a0a\u606f – ${message}`);
\n});
\n“`<\/p>\n

\u900f\u904e\u9019\u4e9b\u7c21\u55ae\u7684\u6b65\u9a5f\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u69cb\u5efa\u4e00\u500b\u57fa\u672c\u7684 UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u3002<\/p>\n

\u7e3d\u7d50<\/h2>\n

\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 Node.js \u7684\u7db2\u8def\u6a21\u7d44\u4f86\u69cb\u5efa\u9ad8\u6548\u7684 UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u3002\u6211\u5011\u9996\u5148\u4e86\u89e3\u4e86 UDP \u5354\u5b9a\u7684\u7279\u6027\uff0c\u63a5\u8457\u6df1\u5165\u63a2\u8a0e\u4e86 Node.js \u7684\u7db2\u8def\u6a21\u7d44\uff0c\u4e26\u5be6\u969b\u793a\u7bc4\u4e86 UDP \u5ba2\u6236\u7aef\u8207\u4f3a\u670d\u5668\u7684\u642d\u5efa\u904e\u7a0b\u3002\u901a\u904e\u9019\u4e9b\u77e5\u8b58\uff0c\u4f60\u5c07\u80fd\u5920\u66f4\u597d\u5730\u61c9\u7528 Node.js \u9032\u884c\u7db2\u8def\u958b\u767c\u3002<\/p>\n

—<\/p>\n

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\u6587\u7ae0\u6458\u8981:\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Node.js\u6784\u5efaUDP\u5ba2\u6237\u7aef\/\u670d\u52a1\u5668\uff0c\u4e26\u89e3\u91cb\u5982\u4f55\u4f7f\u7528\u7f51\u7edc\u6a21\u5757\u4f86\u6784\u5efaUDP\u5ba2\u6237\u7aef\/\u670d\u52a1\u5668\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[193,192],"tags":[191,190],"class_list":["post-6214","post","type-post","status-publish","format-standard","hentry","category-node","category-node-js","tag-node","tag-node-js"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1Ce","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=6214"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6214\/revisions"}],"predecessor-version":[{"id":6215,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6214\/revisions\/6215"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=6214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=6214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=6214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}