Qt开发——TCP协议下的socket通信

#-------------------------------------------------
#
# Project created by QtCreator 2015-10-02T18:16:54
#
#-------------------------------------------------

QT       += core network

QT       -= gui

TARGET = tcp
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

HEADERS += server.h

#ifndef SERVER_H
#define SERVER_H

#endif // SERVER_H

#include <QObject>

#include <QTcpServer>
#include <QTcpSocket>
class Server: public QObject
{
Q_OBJECT
private:
QTcpServer *server;
QTcpSocket *socket;
public:
Server();
~Server();
public slots:
void getSocket();
void print();
};

#include <QCoreApplication>
#include <server.h>

Server::Server()
{
server = new QTcpServer();
server->listen(QHostAddress::Any, 12345);
QObject::connect(server, SIGNAL(newConnection()), this, SLOT(getSocket()));
}
void Server::getSocket()
{
socket = server->nextPendingConnection();
QObject::connect(socket, SIGNAL(readyRead()), this, SLOT(print()));
}
void Server::print()
{
QByteArray content= socket->readAll();
qDebug() << "This is message transmitted with Tcp:";
qDebug() << content;
qDebug() << "end.";
}

Server::~Server()
{
delete server;
}

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
Server x;
QTcpSocket client;
client.connectToHost("127.0.0.1", 12345);
client.write("haha");
return a.exec();
}