{"id":6362,"date":"2025-06-02T13:52:59","date_gmt":"2025-06-04T06:42:58","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6362"},"modified":"2025-06-04T13:52:59","modified_gmt":"2025-06-04T06:42:58","slug":"%e4%ba%86%e8%a7%a3%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8node-js%e4%b8%ad%e7%9a%84dgram%e5%ba%93%e9%80%b2%e8%a1%8cudp%e9%80%9a%e4%bf%a1","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%e4%b8%ad%e7%9a%84dgram%e5%ba%93%e9%80%b2%e8%a1%8cudp%e9%80%9a%e4%bf%a1\/","title":{"rendered":"2025 \u6700\u65b0\u7248\uff1a\u5982\u4f55\u5728 Node.js \u4e2d\u4f7f\u7528 dgram \u5eab\u9032\u884c\u9ad8\u6548\u7684 UDP \u901a\u4fe1"},"content":{"rendered":"

<\/p>\n

\u5982\u4f55\u5728 Node.js \u4e2d\u4f7f\u7528 dgram \u5eab\u9032\u884c\u9ad8\u6548\u7684 UDP \u901a\u4fe1<\/h1>\n

Node.js \u662f\u4e00\u500b\u5ee3\u53d7\u6b61\u8fce\u7684 JavaScript \u74b0\u5883\uff0c\u53ef\u4ee5\u7528\u65bc\u958b\u767c\u8de8\u5e73\u53f0\u7684\u61c9\u7528\u7a0b\u5f0f\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u500b\u5f37\u5927\u7684\u6a21\u7d44\u7cfb\u7d71\uff0c\u8b93\u958b\u767c\u8005\u8f15\u9b06\u69cb\u5efa\u529f\u80fd\u5f37\u5927\u7684\u61c9\u7528\u7a0b\u5f0f\u3002\u5176\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u6a21\u7d44\u662f dgram\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u800c\u5f37\u5927\u7684 API\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u5728 Node.js \u4e2d\u4f7f\u7528 UDP \u901a\u4fe1\u3002<\/p>\n

UDP\uff08\u7528\u6236\u8cc7\u6599\u5831\u5354\u5b9a\uff09\u662f\u4e00\u7a2e\u7121\u9023\u63a5\u7684\u5354\u5b9a\uff0c\u80fd\u8b93\u61c9\u7528\u7a0b\u5f0f\u5728\u7db2\u7d61\u4e0a\u5feb\u901f\u50b3\u8f38\u6578\u64da\u3002\u8207 TCP\uff08\u50b3\u8f38\u63a7\u5236\u5354\u5b9a\uff09\u4e0d\u540c\uff0cUDP \u4e0d\u9700\u8981\u5efa\u7acb\u9023\u63a5\uff0c\u4e5f\u4e0d\u6703\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u901f\u5ea6\u4e0a\u5177\u6709\u512a\u52e2\uff0c\u96d6\u7136\u5728\u53ef\u9760\u6027\u4e0a\u6709\u6240\u6b20\u7f3a\u3002<\/p>\n

## \u5275\u5efa UDP Socket<\/p>\n

dgram \u6a21\u7d44\u5141\u8a31\u958b\u767c\u8005\u5275\u5efa UDP socket\uff0c\u4e26\u63a5\u6536\u8207\u767c\u9001\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u4e00\u500b\u57fa\u672c\u7684 UDP socket \u7684\u7bc4\u4f8b\uff1a<\/p>\n

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

socket.on(‘message’, (msg, rinfo) => {
\n console.log(`Received message: {msg} from<\/span>{rinfo.address}:{rinfo.port}`);
\n});<\/p>\n

socket.bind(3000, () => {
\n console.log(‘Socket is listening on port 3000’);
\n});
\n“`<\/p>\n

\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b UDP socket\uff0c\u4e26\u8a2d\u5b9a\u5728 3000 \u7aef\u53e3\u4e0a\u76e3\u807d\u4f86\u81ea\u5ba2\u6236\u7aef\u7684\u6d88\u606f\u3002\u4e00\u65e6\u6536\u5230\u6d88\u606f\uff0c\u5c31\u6703\u6253\u5370\u51fa\u6d88\u606f\u5167\u5bb9\u53ca\u5176\u4f86\u6e90\u5730\u5740\u3002<\/p>\n

## \u767c\u9001\u6578\u64da<\/p>\n

\u8981\u767c\u9001\u6578\u64da\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 `dgram.send()` \u65b9\u6cd5\u3002\u4ee5\u4e0b\u7bc4\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u767c\u9001\u4e00\u689d\u6d88\u606f\uff1a<\/p>\n

“`javascript
\nconst message = Buffer.from(‘Hello World!’);
\nconst port = 3000;
\nconst address = ‘127.0.0.1’;<\/p>\n

socket.send(message, port, address, (err) => {
\n if (err) {
\n console.error(`Error:<\/span>{err}`);
\n } else {
\n console.log(‘Message sent successfully!’);
\n }
\n});
\n“`<\/p>\n

\u9019\u6bb5\u7a0b\u5f0f\u78bc\u6703\u5c07\u4e00\u689d\u6d88\u606f\u767c\u9001\u5230\u672c\u5730\u4e3b\u6a5f\u7684 3000 \u7aef\u53e3\u3002<\/p>\n

## \u932f\u8aa4\u6392\u9664<\/p>\n

\u5728\u4f7f\u7528 dgram \u6a21\u7d44\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5617\u8a66\u767c\u9001\u5230\u4e00\u500b\u672a\u555f\u52d5\u7684 socket\uff0c\u6703\u5c0e\u81f4\u932f\u8aa4\u3002\u78ba\u4fdd\u5728\u767c\u9001\u6578\u64da\u524d\uff0csocket \u5df2\u7d93\u88ab\u6b63\u78ba\u5730\u7d81\u5b9a\u3002<\/p>\n

## \u5ef6\u4f38\u61c9\u7528<\/p>\n

\u4f7f\u7528 dgram \u6a21\u7d44\uff0c\u4f60\u53ef\u4ee5\u69cb\u5efa\u5404\u7a2e\u61c9\u7528\uff0c\u4f8b\u5982\u5373\u6642\u804a\u5929\u61c9\u7528\u3001\u904a\u6232\u4f3a\u670d\u5668\u6216\u5be6\u6642\u6578\u64da\u50b3\u8f38\u670d\u52d9\u3002\u9019\u4e9b\u61c9\u7528\u90fd\u80fd\u5145\u5206\u5229\u7528 UDP \u7684\u901f\u5ea6\u512a\u52e2\uff0c\u9069\u7528\u65bc\u9700\u8981\u5feb\u901f\u50b3\u8f38\u800c\u4e0d\u5fc5\u904e\u65bc\u95dc\u6ce8\u6578\u64da\u5b8c\u6574\u6027\u7684\u5834\u666f\u3002<\/p>\n

\u7e3d\u7684\u4f86\u8aaa\uff0cdgram \u6a21\u7d44\u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u800c\u9ad8\u6548\u7684 API\uff0c\u53ef\u4ee5\u4f7f\u958b\u767c\u8005\u5728 Node.js \u4e2d\u8f15\u9b06\u5be6\u73fe UDP \u901a\u4fe1\u3002\u82e5\u60f3\u6df1\u5165\u4e86\u89e3\u66f4\u591a Python \u6216 Node.js \u7684\u6559\u5b78\u8cc7\u6e90\uff0c\u5efa\u8b70\u67e5\u95b1 [\u9019\u88e1\u7684\u76f8\u95dc\u6587\u7ae0](https:\/\/vocus.cc) \u4f86\u63d0\u5347\u4f60\u7684\u958b\u767c\u6280\u80fd\u3002<\/p>\n

## Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/p>\n

**Q1: UDP \u8207 TCP \u7684\u4e3b\u8981\u5340\u5225\u662f\u4ec0\u9ebc\uff1f**
\nA1: UDP \u662f\u7121\u9023\u63a5\u7684\u5354\u5b9a\uff0c\u50b3\u8f38\u901f\u5ea6\u5feb\u4f46\u4e0d\u4fdd\u8b49\u6578\u64da\u5b8c\u6574\u6027\uff1b\u800c TCP \u662f\u6709\u9023\u63a5\u7684\u5354\u5b9a\uff0c\u50b3\u8f38\u901f\u5ea6\u8f03\u6162\u4f46\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u53ef\u9760\u6027\u3002<\/p>\n

**Q2: \u5982\u4f55\u8655\u7406 dgram \u6a21\u7d44\u4e2d\u7684\u932f\u8aa4\uff1f**
\nA2: \u53ef\u4ee5\u5728\u767c\u9001\u6578\u64da\u6642\u7684\u56de\u8abf\u51fd\u6578\u4e2d\u6aa2\u67e5\u932f\u8aa4\uff0c\u4e26\u901a\u904e `console.error()` \u8f38\u51fa\u932f\u8aa4\u4fe1\u606f\u4ee5\u9032\u884c\u6392\u67e5\u3002<\/p>\n

**Q3: dgram \u6a21\u7d44\u9069\u5408\u7528\u65bc\u54ea\u4e9b\u61c9\u7528\u5834\u666f\uff1f**
\nA3: dgram \u6a21\u7d44\u975e\u5e38\u9069\u5408\u7528\u65bc\u9700\u8981\u5feb\u901f\u6578\u64da\u50b3\u8f38\u7684\u61c9\u7528\uff0c\u5982\u5373\u6642\u901a\u8a0a\u3001\u7dda\u4e0a\u904a\u6232\u548c\u6d41\u5a92\u9ad4\u670d\u52d9\u7b49\u3002
\n—<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6458\u8981:\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Node.js\u4e2d\u7684dgram\u5e93\u9032\u884cUDP\u901a\u4fe1\uff0cdgram\u5eab\u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u7684API\uff0c\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u8f15\u9b06\u5730\u5efa\u7acbUDP\u670d\u52d9\u5668\u548c\u5ba2\u6236\u7aef\uff0c\u4e26\u901a\u904eUDP\u5354\u8b70\u9032\u884c\u6578\u64da\u50b3\u8f38\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-6362","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\/pcFK27-1EC","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6362","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=6362"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6362\/revisions"}],"predecessor-version":[{"id":6363,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6362\/revisions\/6363"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=6362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=6362"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=6362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}