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Diffstat (limited to 'tests/manual/wasm/network/echo_server/main.cpp')
| -rw-r--r-- | tests/manual/wasm/network/echo_server/main.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/tests/manual/wasm/network/echo_server/main.cpp b/tests/manual/wasm/network/echo_server/main.cpp new file mode 100644 index 0000000000..6627ed2c1c --- /dev/null +++ b/tests/manual/wasm/network/echo_server/main.cpp @@ -0,0 +1,127 @@ +/**************************************************************************** +** +** Copyright (C) 2021 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, you may use this file under the terms of the BSD license +** as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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(); +} + |