动态IP获取

自己用ARM9实现了网络摄像头

但是家里拨号到ip老是变，导致公网外部老是访问不了。

所以想了一下，本来想用邮箱做IP记录

 现在直接用php实现

<?php
if(isset($_GET["chk"]))
{
  $file_pointer = fopen("ip","w");
  fwrite($file_pointer,$_SERVER["REMOTE_ADDR"]);
  fclose($file_pointer);

  echo $_SERVER["REMOTE_ADDR"];
}else{
  echo file_get_contents("ip");
}

?> 

嵌入式里面每隔5分钟访问ip.php?chk=c

QT嵌入式代码

qsetip.h

#ifndef QSETIP_H

#define QSETIP_H

#include <QUrl>

#include <QNetworkRequest>

#include <QNetworkReply>

#include <QDebug>

class QSetIp : public QObject

{

    Q_OBJECT

private:

    QUrl url;

    QNetworkAccessManager* qnam;

    QNetworkReply *reply;

    int httpGetId;

    bool httpRequestAborted;

public:

    explicit QSetIp(QObject *parent = 0);

    void startRequest(QUrl url);

signals:

    void httpFinish(QString result);

public slots:

    void httpFinished();

};

#endif // QSETIP_H

qsetip.cpp

#include "qsetip.h"

QSetIp::QSetIp(QObject *parent) :

        QObject(parent)

{

}

void QSetIp::startRequest(QUrl url)

{

    qnam = new QNetworkAccessManager(this);

    reply = qnam->get(QNetworkRequest(url));

    connect(reply, SIGNAL(finished()), this, SLOT(httpFinished()));

}

void QSetIp::httpFinished()

{

    if (httpRequestAborted) {

        QString html = reply->readAll();

        httpFinish(html);

        qDebug()<< html;

        reply = 0;

    }

}

在程序启动 加入

QTimer *timer = new QTimer(this);

connect(timer, SIGNAL(timeout()), this, SLOT(runGet()));

timer->start(5000);

建立slot

void MainWindow::runGet()

{

    setIpClass = new QSetIp(this);

    setIpClass->startRequest(QUrl("http://www.xxxxxx.com/ip.php?chk=1"));

}