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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 | 80 |
1 files changed, 80 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..3a67cabc79 --- /dev/null +++ b/tests/manual/wasm/network/echo_server/main.cpp @@ -0,0 +1,80 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only + +#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(); +} + |