2025年udp广播模式发送指令（udp广播发送数据）

科技前沿 • 2025-04-28 16:47 • 阅读 44
大家好，我是讯享网，很高兴认识大家。
void createUdpAndSendData() { 讯享网</span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 创建UDP对象</span> <span style="color: rgba(0, 0, 255, 1)">if</span>(udp ==<span style="color: rgba(0, 0, 0, 1)"> nullptr) { udp </span>= <span style="color: rgba(0, 0, 255, 1)">new</span> QUdpSocket(<span style="color: rgba(0, 0, 255, 1)">this</span><span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 第一种方式，绑定当前默认网卡来发送广播 </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> udp-&gt;bind(52110, QUdpSocket::ShareAddress); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 第二种方式，绑定指定网卡</span> QHostAddress ip1(<span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">10.10.13.132</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">); udp</span>-&gt;bind(ip1, <span style="color: rgba(128, 0, 128, 1)">52110</span><span style="color: rgba(0, 0, 0, 1)">, QUdpSocket::ShareAddress); connect(udp, </span>&amp;QUdpSocket::readyRead, <span style="color: rgba(0, 0, 255, 1)">this</span>, &amp;<span style="color: rgba(0, 0, 0, 1)">MyWifiSelect::readSocketData); } </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 发送广播</span> QByteArray data = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Hello,I'm on line!</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">; udp</span>-&gt;writeDatagram(data.data(), data.size(), QHostAddress::Broadcast, <span style="color: rgba(128, 0, 128, 1)">52110</span><span style="color: rgba(0, 0, 0, 1)">); 
 } void dropUdp() {
讯享网 </span><span style="color: rgba(0, 0, 255, 1)">if</span><span style="color: rgba(0, 0, 0, 1)"> (udp) { </span><span style="color: rgba(0, 0, 255, 1)">delete</span><span style="color: rgba(0, 0, 0, 1)"> udp; udp </span>=<span style="color: rgba(0, 0, 0, 1)"> nullptr; } 
 } void readData() { 讯享网</span><span style="color: rgba(0, 0, 255, 1)">while</span> (udp-&gt;<span style="color: rgba(0, 0, 0, 1)">hasPendingDatagrams()) { QNetworkDatagram data </span>= udp-&gt;<span style="color: rgba(0, 0, 0, 1)">receiveDatagram(); QString s </span>=<span style="color: rgba(0, 0, 0, 1)"> data.data(); } 
 }
讯享网
2025年udp广播模式发送指令（udp广播发送数据）

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