Simple http client demo

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 1 // httpclientdemo.h 2 #ifndef HTTPCLIENTDEMO_H 3 #define HTTPCLIENTDEMO_H 4  5 #include <QMainWindow> 6 #include <QTcpSocket> 7  8 namespace Ui { 9 class HttpClientDemo;10 }11 12 class HttpClientDemo : public QMainWindow13 {14     Q_OBJECT15 16 public:17     explicit HttpClientDemo(QWidget *parent = 0);18     ~HttpClientDemo();19 20 private:21     Ui::HttpClientDemo *ui;22     QTcpSocket *tcpSocket;23     QString addr;24 25 private slots:26     void onConnected();27     void onReadyRead();28     void onDisconnected();29     void on_ClearButton_clicked();30     void on_OKButton_clicked();31 };32 33 #endif // HTTPCLIENTDEMO_H

 1 // httpclientdemo.cpp 2 #include "httpclientdemo.h" 3 #include "ui_httpclientdemo.h" 4  5 #include <QDebug> 6 #include <QFile> 7  8 HttpClientDemo::HttpClientDemo(QWidget *parent) : 9     QMainWindow(parent),10     ui(new Ui::HttpClientDemo)11 {12     ui->setupUi(this);13 14     tcpSocket = new QTcpSocket(this);15     connect(tcpSocket, SIGNAL(connected()), this, SLOT(onConnected()));16     connect(tcpSocket, SIGNAL(readyRead()), this, SLOT(onReadyRead()));17     connect(tcpSocket, SIGNAL(disconnected()), this, SLOT(onDisconnected()));18 }19 20 void HttpClientDemo::onConnected()21 {22     qDebug() << "Connected..";23     QString head = "GET / HTTP/1.1\r\n"24                    "Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8\r\n"25                    // Not to compress26                    // "Accept-Encoding:gzip, deflate, sdch\r\n"27                    "Accept-Language:zh-CN,zh;q=0.8\r\n"28                    "Connection:keep-alive\r\n"29                    "Host:";30     head += addr + "\r\n"31                    "Upgrade-Insecure-Requests:1\r\n"32                    "User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36\r\n\r\n";33     QByteArray tmp = head.toLatin1();34     tcpSocket->write(tmp.data());35 }36 37 void HttpClientDemo::onReadyRead()38 {39     // Absolute path40     QFile file("D:\\Workspace\\Qt\\HttpClientDemo\\index.txt");41     file.open(QIODevice::Append | QIODevice::Text);42     QTextStream out(&file);43     qDebug() << "Ready read..";44     out << tcpSocket->readAll();45     out.flush();46     file.close();47 }48 49 void HttpClientDemo::onDisconnected()50 {51     qDebug() << "Disconnected..";52 }53 54 HttpClientDemo::~HttpClientDemo()55 {56     delete ui;57 }58 59 void HttpClientDemo::on_ClearButton_clicked()60 {61     ui->IpLineEdit->setText(QString());62 }63 64 void HttpClientDemo::on_OKButton_clicked()65 {66     addr = ui->IpLineEdit->text();67     tcpSocket->connectToHost(addr, 80);68 }

 1 // main.cpp 2 #include "httpclientdemo.h" 3 #include <QApplication> 4  5 int main(int argc, char *argv[]) 6 { 7     QApplication a(argc, argv); 8     HttpClientDemo w; 9     w.show();10 11     return a.exec();12 }

Simple http client demo