IrcConnection2.hpp

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#pragma once

#include "util/ExponentialBackoff.hpp"

#include <pajlada/signals/signal.hpp>

#include <IrcConnection>
#include <QTimer>

namespace chatterino {

class IrcConnection : public Communi::IrcConnection
{
public:
    IrcConnection(QObject *parent = nullptr);
    ~IrcConnection() override;

    // Signal to notify that we're unexpectedly no longer connected, either due
    // to a connection error or if we think we've timed out. It's up to the
    // receiver to trigger a reconnect, if desired
    pajlada::Signals::Signal<bool> connectionLost;

    // Request a reconnect with a minimum interval between attempts.
    pajlada::Signals::NoArgSignal smartReconnect;

    virtual void open();
    virtual void close();

private:
    QTimer pingTimer_;
    QTimer reconnectTimer_;
    std::atomic<bool> recentlyReceivedMessage_{true};

    // Reconnect with a base delay of 1 second and max out at 1 second * (2^(5-1)) (i.e. 16 seconds)
    ExponentialBackoff<5> reconnectBackoff_{std::chrono::milliseconds{1000}};

    std::atomic<bool> expectConnectionLoss_{false};

    // waitingForPong_ is set to true when we send a PING message, and back to
    // false when we receive the matching PONG response
    std::atomic<bool> waitingForPong_{false};
};

}  // namespace chatterino