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我從UDP客戶端接收數據時遇到問題。我使用的代碼是:QUdpSocket讀取問題
MyUDP::MyUDP(QObject *parent) :
QObject(parent)
{
socket = new QUdpSocket(this);
socket->bind(QHostAddress("192.168.1.10"),2000);
connect(socket, SIGNAL(readyRead()), this, SLOT(readyRead()));
qDebug() << "Socket establert";
}
void MyUDP::HelloUDP()
{
QByteArray Data;
Data.append("R");
socket->writeDatagram(Data, QHostAddress("192.168.1.110"), 5001);
qDebug() << "Enviat datagrama";
}
void MyUDP::readyRead()
{
QByteArray buffer;
buffer.resize(socket->pendingDatagramSize());
QHostAddress sender;
quint16 senderPort;
socket->readDatagram(buffer.data(), buffer.size(), &sender, &senderPort);
qDebug() << "Message from: " << sender.toString();
qDebug() << "Message port: " << senderPort;
qDebug() << "Message: " << buffer;
qDebug() << "Size: " << buffer.size();
qDebug() << "Pending datagrams: " << socket->hasPendingDatagrams();
QString str(buffer);
QString res = str.toAscii().toHex(); qDebug() << res;
}
的問題是,在Wireshark的我收到這個數據(所有數據):
Internet Protocol Version 4, Src: 192.168.1.110, Dst: 192.168.1.10
User Datagram Protocol, Src Port: 5001, Dst Port: 2000
Data (20 bytes)
Data: 58bf80000059bf800000410000000053bf800000
[Length: 20]
但在我的應用程序的控制檯輸出我收到此trunkated數據:
Message from: "192.168.1.110"
Message port: 5001
Message: "X¿
Size: 20
Pending datagrams: false
"58bf80"
您可以看到只接收到第一部分數據「58bf80」。看來數據報沒有任何限制,並且套接字運行良好。我不明白可能發生了什麼。
在此先感謝。