{"id":7233,"date":"2024-03-14T21:04:39","date_gmt":"2024-03-14T12:04:39","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/qt%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%9fudp%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e9%80%81%e5%8f%97%e4%bf%a1%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b\/"},"modified":"2025-08-03T13:28:33","modified_gmt":"2025-08-03T04:28:33","slug":"qt%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%9fudp%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e9%80%81%e5%8f%97%e4%bf%a1%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/qt%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%9fudp%e3%83%87%e3%83%bc%e3%82%bf%e3%81%ae%e9%80%81%e5%8f%97%e4%bf%a1%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b\/","title":{"rendered":"Qt UDP\u901a\u4fe1 \u5b9f\u88c5\u30ac\u30a4\u30c9\uff5c\u30c7\u30fc\u30bf\u9001\u53d7\u4fe1\u306e\u57fa\u672c"},"content":{"rendered":"<p>Qt\u3067UDP\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001QUdpSocket\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u521b\u5efa\u4e00\u4e2aQUdpSocket\u5bf9\u8c61<\/span>\r\nQUdpSocket *udpSocket = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-built_in\">QUdpSocket<\/span>(<span class=\"hljs-keyword\">this<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u7ed1\u5b9a\u672c\u5730\u7aef\u53e3\u7528\u4e8e\u63a5\u6536\u6570\u636e<\/span>\r\nudpSocket-&gt;<span class=\"hljs-built_in\">bind<\/span>(QHostAddress::Any, <span class=\"hljs-number\">1234<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u53d1\u9001\u6570\u636e<\/span>\r\nudpSocket-&gt;<span class=\"hljs-built_in\">writeDatagram<\/span>(<span class=\"hljs-string\">\"Hello UDP\"<\/span>, QHostAddress::LocalHost, <span class=\"hljs-number\">1234<\/span>);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u63a5\u6536\u6570\u636e<\/span>\r\n<span class=\"hljs-built_in\">connect<\/span>(udpSocket, &amp;QUdpSocket::readyRead, <span class=\"hljs-keyword\">this<\/span>, [=](){\r\n    QByteArray datagram;\r\n    datagram.<span class=\"hljs-built_in\">resize<\/span>(udpSocket-&gt;<span class=\"hljs-built_in\">pendingDatagramSize<\/span>());\r\n    QHostAddress sender;\r\n    quint16 senderPort;\r\n\r\n    udpSocket-&gt;<span class=\"hljs-built_in\">readDatagram<\/span>(datagram.<span class=\"hljs-built_in\">data<\/span>(), datagram.<span class=\"hljs-built_in\">size<\/span>(), &amp;sender, &amp;senderPort);\r\n\r\n    <span class=\"hljs-built_in\">qDebug<\/span>() &lt;&lt; <span class=\"hljs-string\">\"Received datagram: \"<\/span> &lt;&lt; datagram;\r\n    <span class=\"hljs-built_in\">qDebug<\/span>() &lt;&lt; <span class=\"hljs-string\">\"From: \"<\/span> &lt;&lt; sender.<span class=\"hljs-built_in\">toString<\/span>() &lt;&lt; <span class=\"hljs-string\">\":\"<\/span> &lt;&lt; senderPort;\r\n});\r\n<\/code><\/pre>\n<p>\u30b3\u30fc\u30c9\u306e\u6700\u521d\u306bQUdpSocket\u30aa\u30d6\u30b8\u30a7\u30af\u30c8udpSocket\u304c\u4f5c\u6210\u3055\u308c\u3001\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3059\u308b\u305f\u3081\u306b\u30ed\u30fc\u30ab\u30eb\u30dd\u30fc\u30c81234\u306b\u30d0\u30a4\u30f3\u30c9\u3055\u308c\u307e\u3057\u305f\u3002\u305d\u306e\u5f8c\u3001writeDatagram\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u30ed\u30fc\u30ab\u30eb\u30db\u30b9\u30c8\u306e1234\u30dd\u30fc\u30c8\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002\u6b21\u306b\u3001readyRead\u30b7\u30b0\u30ca\u30eb\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3057\u3001pendingDatagramSize()\u3067\u30c7\u30fc\u30bf\u306e\u30b5\u30a4\u30ba\u3092\u53d6\u5f97\u3057\u3001readDatagram\u30e1\u30bd\u30c3\u30c9\u3067\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308a\u3001\u53d7\u4fe1\u3057\u305f\u30c7\u30fc\u30bf\u3068\u9001\u4fe1\u5143\u306eIP\u30a2\u30c9\u30ec\u30b9\u304a\u3088\u3073\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qt\u3067UDP\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001QUdpSocket\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002 \/\/ \u521b\u5efa\u4e00\u4e2aQUdpSocket\u5bf9\u8c61 QUdpSocket *udpSocket = ne [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[85,1528,2575,1611,2586],"class_list":["post-7233","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c","tag-qt","tag-udp","tag-1611","tag-2586"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qt UDP\u901a\u4fe1 \u5b9f\u88c5\u30ac\u30a4\u30c9\uff5c\u30c7\u30fc\u30bf\u9001\u53d7\u4fe1\u306e\u57fa\u672c - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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