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From 721ba9faafb79aac73973410ee1dd3624ded97a5 Mon Sep 17 00:00:00 2001
From: Aleix Pol <aleixpol@kde.org>
Date: Wed, 16 Sep 2020 02:27:13 +0200
Subject: [PATCH 06/10] Don't brute-force reading the socket
The package will arrive eventually, and dataReceived will be emitted.
Otherwise we just end up calling dataReceived to no end.
Thanks Matthias Gerstner <mgerstner@suse.de> for reporting this.
---
core/backends/lan/socketlinereader.cpp | 8 -------
tests/testsocketlinereader.cpp | 31 ++++++++++++++++++++++++--
2 files changed, 29 insertions(+), 10 deletions(-)
diff --git a/core/backends/lan/socketlinereader.cpp b/core/backends/lan/socketlinereader.cpp
index f67fdf3f..da77052a 100644
--- a/core/backends/lan/socketlinereader.cpp
+++ b/core/backends/lan/socketlinereader.cpp
@@ -38,14 +38,6 @@ void SocketLineReader::dataReceived()
}
}
- //If we still have things to read from the socket, call dataReceived again
- //We do this manually because we do not trust readyRead to be emitted again
- //So we call this method again just in case.
- if (m_socket->bytesAvailable() > 0) {
- QMetaObject::invokeMethod(this, "dataReceived", Qt::QueuedConnection);
- return;
- }
-
//If we have any packets, tell it to the world.
if (!m_packets.isEmpty()) {
Q_EMIT readyRead();
diff --git a/tests/testsocketlinereader.cpp b/tests/testsocketlinereader.cpp
index 75584556..b6425b03 100644
--- a/tests/testsocketlinereader.cpp
+++ b/tests/testsocketlinereader.cpp
@@ -25,16 +25,19 @@
#include <QProcess>
#include <QEventLoop>
#include <QTimer>
+#include <QSignalSpy>
class TestSocketLineReader : public QObject
{
Q_OBJECT
public Q_SLOTS:
- void initTestCase();
+ void init();
+ void cleanup() { delete m_server; }
void newPacket();
private Q_SLOTS:
void socketLineReader();
+ void badData();
private:
QTimer m_timer;
@@ -45,8 +48,9 @@ private:
SocketLineReader* m_reader;
};
-void TestSocketLineReader::initTestCase()
+void TestSocketLineReader::init()
{
+ m_packets.clear();
m_server = new Server(this);
QVERIFY2(m_server->listen(QHostAddress::LocalHost, 8694), "Failed to create local tcp server");
@@ -97,6 +101,29 @@ void TestSocketLineReader::socketLineReader()
}
}
+void TestSocketLineReader::badData()
+{
+ const QList<QByteArray> dataToSend = { "data1\n", "data" }; //does not end in a \n
+ for (const QByteArray& line : qAsConst(dataToSend)) {
+ m_conn->write(line);
+ }
+ m_conn->flush();
+
+ QSignalSpy spy(m_server, &QTcpServer::newConnection);
+ QVERIFY(m_server->hasPendingConnections() || spy.wait(1000));
+ QSslSocket* sock = m_server->nextPendingConnection();
+
+ QVERIFY2(sock != nullptr, "Could not open a connection to the client");
+
+ m_reader = new SocketLineReader(sock, this);
+ connect(m_reader, &SocketLineReader::readyRead, this, &TestSocketLineReader::newPacket);
+ m_timer.start();
+ m_loop.exec();
+
+ QCOMPARE(m_packets.count(), 1);
+ QCOMPARE(m_packets[0], dataToSend[0]);
+}
+
void TestSocketLineReader::newPacket()
{
if (!m_reader->bytesAvailable()) {
--
2.28.0
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