Qt broadcastreceiver가 Linux에서 보낸 사람과 작동하지 않습니다. 발신자는 c로 작성됩니다.Linux에서 C의 UDP 발신자 및 Windows의 Qt에서 수신자가 작동하지 않습니까?
나는 창문에 리눅스에서 데이터를 수신하는 동안 문제가있을 수 있습니다 무엇
C.
에 리눅스 수신기 제대로 작동 확인도 Qt는 broadcastsender입니다 창에 Qt는 broadcastsender와 Qt는 브로드 캐스트 리시버 테스트했습니다.여기에 같은 코드가 있습니다.
송신기 (Qt는/윈도우) MAIN.CPP
#include <QApplication>
#include "receiver.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
Receiver receiver;
receiver.show();
return app.exec();
}
receiver.h
#ifndef RECEIVER_H
#define RECEIVER_H
#include <QtGui>
#include <QtNetwork/QUdpSocket>
#include <QWidget>
class Receiver : public QWidget
{
Q_OBJECT
public:
Receiver(QWidget *parent = 0);
private slots:
void processPendingDatagrams();
private:
QLabel *statusLabel;
QPushButton *quitButton;
QUdpSocket *udpSocket;
};
#endif
receiver.cpp
#include <QtGui>
#include <QtNetwork>
#include "receiver.h"
#define PORT 45454
Receiver::Receiver(QWidget *parent): QWidget(parent)
{
statusLabel = new QLabel(tr("Listening for broadcasted messages"));
statusLabel->setWordWrap(true);
quitButton = new QPushButton(tr("&Quit"));
udpSocket = new QUdpSocket(this);
bool b = udpSocket->bind(QHostAddress::Any,PORT, QUdpSocket::ShareAddress);
connect(udpSocket, SIGNAL(readyRead()), this, SLOT(processPendingDatagrams()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
QHBoxLayout *buttonLayout = new QHBoxLayout;
buttonLayout->addStretch(1);
buttonLayout->addWidget(quitButton);
buttonLayout->addStretch(1);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(statusLabel);
mainLayout->addLayout(buttonLayout);
setLayout(mainLayout);
setWindowTitle(tr("Broadcast Receiver"));
}
void Receiver::processPendingDatagrams()
{
while (udpSocket->hasPendingDatagrams())
{
QByteArray datagram;
datagram.resize(udpSocket->pendingDatagramSize());
udpSocket->readDatagram(datagram.data(), datagram.size());
statusLabel->setText(statusLabel->text() + tr("Received datagram: \"%1\"").arg(datagram.data()));
}
}
broadcastreceiver.pro
sender.c (C/리눅스)
#include <stdio.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#define BUFLEN 512
#define NPACK 10
#define PORT 45454
#define SRV_IP "xxx.xxx.xxx.xxx"
void diep(char *s)
{
perror(s);
exit(1);
}
int main(void)
{
struct sockaddr_in si_other;
int s, i, slen=sizeof(si_other);
char buf[BUFLEN];
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
{
diep("socket");
printf("\n\tSocket error\n");
}
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(PORT);
if (inet_aton(SRV_IP, &si_other.sin_addr)==0)
{
fprintf(stderr, "inet_aton() failed\n");
printf("\n\tInet_aton error\n");
exit(1);
}
for (i=0;; i++)
{
printf("Sending packet %d\n", i);
sprintf(buf, "This is packet %d\n", i);
if (sendto(s, buf, BUFLEN, 0, &si_other, slen)==-1)
{
diep("sendto()");
printf("\n\tSendto error\n");
}
printf("Data written on (IP = %s and port : %d\n\n",inet_ntoa(si_other.sin_addr),ntohs(si_other.sin_port));
sleep(1);
}
close(s);
return 0;
}
안부, Gurmeet
Windows에서도 방화벽을 해제했지만 여전히 작동하지 않습니다. –