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// SPDX-FileCopyrightText: 2021 Daniel Vrátil <dvratil@kde.org>
//
// SPDX-License-Identifier: MIT
#pragma once
#include <QDebug>
#include <QThread>
#include <QTest>
#include <condition_variable>
#include <mutex>
#include <atomic>
class QTcpServer;
class QTcpSocket;
class QLocalServer;
class QLocalSocket;
template<typename Func>
class Thread : public QThread {
public:
explicit Thread(Func &&f) : mFunc(std::forward<Func>(f)) {}
~Thread() = default;
void run() override {
mFunc();
}
private:
Func mFunc;
};
template<typename Func>
Thread(Func &&) -> Thread<Func>;
template<typename ServerType>
struct socket_for_server {};
template<> struct socket_for_server<QTcpServer> {
using type = QTcpSocket;
};
template<> struct socket_for_server<QLocalServer> {
using type = QLocalSocket;
};
template<typename ServerType>
class TestHttpServer {
using SocketType = typename socket_for_server<ServerType>::type;
public:
template<typename T>
void start(const T &name) {
mPort = 0;
mHasConnection = false;
mStop = false;
mExpectTimeout = false;
// Can't use QThread::create, it's only available when Qt is built with C++17,
// which some distros don't have :(
mThread.reset(new Thread([this, name]() { run(name); }));
mThread->start();
std::unique_lock lock(mReadyMutex);
mServerReady.wait(lock, [this]() { return mPort != 0; });
}
void stop() {
mStop = true;
if (mThread->isRunning()) {
mThread->wait();
}
mThread.reset();
mPort = 0;
mHasConnection = false;
}
uint16_t port() const {
return mPort;
}
void setExpectTimeout(bool expectTimeout) {
mExpectTimeout = expectTimeout;
}
bool waitForConnection() {
std::unique_lock lock(mReadyMutex);
return mServerReady.wait_for(lock, std::chrono::seconds(5), [this]() { return mHasConnection; });
}
private:
template<typename T>
void run(const T &name) {
using namespace std::chrono_literals;
ServerType server{};
if (!server.listen(name)) {
qDebug() << "Error listening:" << server.serverError();
return;
}
assert(server.isListening());
{
std::scoped_lock lock(mReadyMutex);
if constexpr (std::is_same_v<ServerType, QTcpServer>) {
mPort = server.serverPort();
} else {
mPort = 1;
}
}
SocketType *conn = nullptr;
mServerReady.notify_all();
for (int i = 0; i < 10 && !mStop; ++i) {
if (server.waitForNewConnection(1000)) {
conn = server.nextPendingConnection();
break;
}
}
if (!conn) {
if (!mExpectTimeout) {
QFAIL("No incoming connection within timeout!");
}
mPort = 0;
return;
}
mHasConnection = true;
mServerReady.notify_all();
if (conn->waitForReadyRead(10000)) {
const auto request = conn->readLine();
qDebug() << request;
if (request == "GET /stream HTTP/1.1\r\n") {
QStringList lines;
for (int i = 0; i < 10; ++i) {
lines.push_back(QStringLiteral("Hola %1\n").arg(i));
}
const auto len =
std::accumulate(lines.cbegin(), lines.cend(), 0,
[](int l, const QString &s) { return l + s.size(); });
conn->write("HTTP/1.1 200 OK\r\n"
"Content-Type: text/plain\r\n"
"Content-Length: " +
QByteArray::number(len) +
"\r\n"
"\r\n");
conn->flush();
for (const auto &line : lines) {
conn->write(line.toUtf8());
conn->flush();
std::this_thread::sleep_for(100ms);
}
} else {
if (request == "GET /block HTTP/1.1\r\n") {
std::this_thread::sleep_for(500ms);
}
conn->write("HTTP/1.1 200 OK\r\n"
"Content-Type: text/plain\r\n"
"\r\n"
"abcdef");
}
conn->flush();
conn->close();
} else if (!mStop) {
if (conn->state() == std::remove_cvref_t<decltype(*conn)>::ConnectedState) {
if (!mExpectTimeout) {
QFAIL("No request within 10 seconds");
}
} else {
qDebug() << "Client disconnected without sending request";
}
}
delete conn;
mPort = 0;
}
std::unique_ptr<QThread> mThread;
std::mutex mReadyMutex;
std::condition_variable mServerReady;
uint16_t mPort = 0;
bool mHasConnection = false;
std::atomic_bool mStop = false;
std::atomic_bool mExpectTimeout = false;
};
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