qt5base-lts/tests/manual/wasm/network/echo_server/main.cpp
Lucie Gérard ea7a3105de Use SPDX license identifiers
Amends commit 05fc3aef53.
Some files were still missing.

Task-number: QTBUG-67283
Change-Id: I78b3cbf31138192805b7e186337c6fda4ac844aa
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-11-15 07:50:17 +00:00

81 lines
2.9 KiB
C++

// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtCore>
#include <QtNetwork>
const int timeout = 60 * 1000;
int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
QTcpServer server;
QObject::connect(&server, &QTcpServer::newConnection, [&server](){
qDebug() << "new connection";
QByteArray *receiveBuffer = new QByteArray();
QTcpSocket *socket = server.nextPendingConnection();
QObject::connect(socket, &QIODevice::readyRead, [socket, receiveBuffer](){
// This implements a very simple command protocol, where the server
// processes a stream of commands delimited by ';', and then performs
// an action in reply. The supported commands with actions are:
//
// echo:<message>; writes the received <message> back
// close; closes the socket
//
// We might receive multiple or partial commands; read all available data
// and then scan the buffer for complete commands.
QByteArray newData = socket->readAll();
*receiveBuffer += newData;
int pos = receiveBuffer->indexOf(";");
while (pos != -1) {
QByteArray command = receiveBuffer->left(pos);
receiveBuffer->remove(0, pos + 1);
pos = receiveBuffer->indexOf(";");
if (command.startsWith("echo")) {
// Echo expects echo:<message>
QList<QByteArray> parts = command.split(':');
QByteArray reply = parts.last() + ';';
qDebug() << "Command: echo:" << parts.last();
socket->write(reply);
socket->flush();
} else if (command.startsWith("close")) {
qDebug() << "Command: close";
socket->write("bye!;");
socket->flush();
socket->close();
break;
} else {
qDebug() << "Unknown command:" << command;
}
}
});
QObject::connect(socket, &QAbstractSocket::disconnected, [socket, receiveBuffer](){
delete receiveBuffer;
socket->deleteLater();
});
});
// This is example is intended to be used together with WebSockify on
// the server and acts as a counterpart to the client examples which
// run in the browser. (This example does not run in the browser).
qDebug() << "\nStarting echo server at port 1516. You should now start the"
<< "\nWebSockify forwarding server, and then connect from one of"
<< "\nthe client examples."
<< "\n websockify 1515 localhost:1516";
server.listen(QHostAddress::Any, 1516);
return app.exec();
}