Shulou(Shulou.com)06/01 Report--

# include "server.h"

# include "ui_server.h"

Server::Server (QWidget * parent):

QWidget (parent)

Ui (new Ui::Server)

{

Port = 666,

Socket = new QUdpSocket (this); contains the QUdpSocket class in the .h file, and adds a pointer to the project where network,socket is defined in the .h file

/ / if the binding mode is different according to the system, select the mode through conditional compilation

# ifdef Q_OS_LINUX

Socket- > bind (port, QUdpSocket::ShareAddress)

# else / / Q_OS_WIN32

Socket- > bind (port, QUdpSocket::ReuseAddressHint)

# endif

Connect (socket, SIGNAL (readyRead ()

This, SLOT (readPendingDatagrams ())

Ui- > setupUi (this)

}

Server::~Server ()

{

Delete ui

}

Void Server::readPendingDatagrams () / / start reading data

{

While (socket- > hasPendingDatagrams ())

{

QByteArray datagram

Datagram.resize (socket- > pendingDatagramSize ()); / / obtain the length of the packet through socket

Socket- > readDatagram (datagram.data (), datagram.size ())

DecodeMessage (datagram); / / parse the message

}

}

Void Server::decodeMessage (const QByteArray & ba)

{

QDataStream stream (ba)

QString nick, message

Stream > > nick > > message; / / first read out the first string, assigned to nick (that is, the name), and the second to the message content

ShowMessage (nick, message)

}

/ / used to package messages

QByteArray Server::encodeMessage (const QString & nick, const QString & message) const

{

QByteArray ba

QDataStream stream (& ba, QIODevice::WriteOnly)

Stream text (), / / get the user name

Ui- > textEdit- > toPlainText (); / / get the message

Socket- > writeDatagram (ba, QHostAddress::Broadcast, port); / / initialize Datagram

}

Void Server::showMessage (const QString & nick, const QString & message)

{

QString line = tr ("% 1 says:% 2") .arg (nick) .arg (message)

Ui- > textBrowser- > append (line)

Ui- > textEdit- > clear ()

}

Void Server::on_pushButton_clicked ()

{

SendMessage ()

}

Here is only the .cpp file, which is the logical part of the core. As for the rest, I hope the reader will finish it on his own.

The name of the class used above is Server. In fact, the communication between the two machines does not need a server, as long as it is within a network segment.

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