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// Copyright (C) 2021 The Qt Company Ltd.
// Copyright (C) 2021 Alex Trotsenko <alex1973tr@gmail.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QTest>
#include <QtTest/qtesteventloop.h>
#include <QtCore/qglobal.h>
#include <QtCore/qthread.h>
#include <QtCore/qsemaphore.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qvector.h>
#include <QtCore/qelapsedtimer.h>
#include <QtNetwork/qlocalsocket.h>
#include <QtNetwork/qlocalserver.h>
using namespace std::chrono_literals;
class tst_QLocalSocket : public QObject
{
Q_OBJECT
private slots:
void pingPong_data();
void pingPong();
void dataExchange_data();
void dataExchange();
};
class ServerThread : public QThread
{
public:
QSemaphore running;
explicit ServerThread(int chunkSize)
{
buffer.resize(chunkSize);
}
void run() override
{
QLocalServer server;
connect(&server, &QLocalServer::newConnection, [this, &server]() {
auto socket = server.nextPendingConnection();
connect(socket, &QLocalSocket::readyRead, [this, socket]() {
const qint64 bytesAvailable = socket->bytesAvailable();
Q_ASSERT(bytesAvailable <= this->buffer.size());
QCOMPARE(socket->read(this->buffer.data(), bytesAvailable), bytesAvailable);
QCOMPARE(socket->write(this->buffer.data(), bytesAvailable), bytesAvailable);
});
});
// TODO QTBUG-95136: on failure, remove the socket file and retry.
QVERIFY2(server.listen("foo"), qPrintable(server.errorString()));
running.release();
exec();
}
protected:
QByteArray buffer;
};
class SocketFactory : public QObject
{
Q_OBJECT
public:
bool stopped = false;
explicit SocketFactory(int chunkSize, int connections)
{
buffer.resize(chunkSize);
for (int i = 0; i < connections; ++i) {
QLocalSocket *socket = new QLocalSocket(this);
Q_CHECK_PTR(socket);
connect(this, &SocketFactory::start, [this, socket]() {
QCOMPARE(socket->write(this->buffer), this->buffer.size());
});
connect(socket, &QLocalSocket::readyRead, [i, this, socket]() {
const qint64 bytesAvailable = socket->bytesAvailable();
Q_ASSERT(bytesAvailable <= this->buffer.size());
QCOMPARE(socket->read(this->buffer.data(), bytesAvailable), bytesAvailable);
emit this->bytesReceived(i, bytesAvailable);
if (!this->stopped)
QCOMPARE(socket->write(this->buffer.data(), bytesAvailable), bytesAvailable);
});
socket->connectToServer("foo");
QVERIFY2(socket->waitForConnected(), "The system is probably reaching the maximum "
"number of open file descriptors. On Unix, "
"try to increase the limit with 'ulimit -n 32000' "
"and run the test again.");
QCOMPARE(socket->state(), QLocalSocket::ConnectedState);
}
}
signals:
void start();
void bytesReceived(int channel, qint64 bytes);
protected:
QByteArray buffer;
};
void tst_QLocalSocket::pingPong_data()
{
QTest::addColumn<int>("connections");
for (int value : {10, 50, 100, 1000, 5000})
QTest::addRow("connections: %d", value) << value;
}
void tst_QLocalSocket::pingPong()
{
QFETCH(int, connections);
const int iterations = 100000;
Q_ASSERT(iterations >= connections && connections > 0);
ServerThread serverThread(1);
serverThread.start();
// Wait for server to start.
QVERIFY(serverThread.running.tryAcquire(1, 3000));
SocketFactory factory(1, connections);
QTestEventLoop eventLoop;
QVector<qint64> bytesToRead;
QElapsedTimer timer;
bytesToRead.fill(iterations / connections, connections);
connect(&factory, &SocketFactory::bytesReceived,
[&bytesToRead, &connections, &factory, &eventLoop](int channel, qint64 bytes) {
Q_UNUSED(bytes);
if (--bytesToRead[channel] == 0 && --connections == 0) {
factory.stopped = true;
eventLoop.exitLoop();
}
});
timer.start();
emit factory.start();
// QtTestLib's Watchdog defaults to 300 seconds; we want to give up before
// it bites.
eventLoop.enterLoop(290);
if (eventLoop.timeout())
qDebug("Timed out after %.1f s", timer.elapsed() / 1000.0);
else if (!QTest::currentTestFailed())
qDebug("Elapsed time: %.1f s", timer.elapsed() / 1000.0);
serverThread.quit();
serverThread.wait();
}
void tst_QLocalSocket::dataExchange_data()
{
QTest::addColumn<int>("connections");
QTest::addColumn<int>("chunkSize");
for (int connections : {1, 5, 10}) {
for (int chunkSize : {100, 1000, 10000, 100000}) {
QTest::addRow("connections: %d, chunk size: %d",
connections, chunkSize) << connections << chunkSize;
}
}
}
void tst_QLocalSocket::dataExchange()
{
QFETCH(int, connections);
QFETCH(int, chunkSize);
Q_ASSERT(chunkSize > 0 && connections > 0);
const auto timeToTest = 5000ms;
ServerThread serverThread(chunkSize);
serverThread.start();
// Wait for server to start.
QVERIFY(serverThread.running.tryAcquire(1, 3000));
SocketFactory factory(chunkSize, connections);
QTestEventLoop eventLoop;
qint64 totalReceived = 0;
QElapsedTimer timer;
connect(&factory, &SocketFactory::bytesReceived, [&](int channel, qint64 bytes) {
Q_UNUSED(channel);
totalReceived += bytes;
if (timer.elapsed() >= timeToTest.count()) {
factory.stopped = true;
eventLoop.exitLoop();
}
});
timer.start();
emit factory.start();
eventLoop.enterLoop(timeToTest * 2);
if (!QTest::currentTestFailed())
qDebug("Transfer rate: %.1f MB/s", totalReceived / 1048.576 / timer.elapsed());
serverThread.quit();
serverThread.wait();
}
QTEST_MAIN(tst_QLocalSocket)
#include "tst_qlocalsocket.moc"
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