947da7e1fc
Architecture choice: Modbus TCP has no network discovery mechanism, so
discovery piggybacks on nymea's NetworkDeviceDiscovery (ARP/mDNS scan)
and then probes each host via GET /RealTimeData (V2C Trydan HTTP REST API).
The presence of a "Paused" field in the JSON response is used as a Trydan
fingerprint — it matches the charger model and is absent on generic devices.
cf. evcc charger/trydan.go realTimeData struct.
Probes run concurrently (one QNetworkReply per host) but the sequence
terminates via two independent paths that could both fire:
1. The NetworkDeviceDiscoveryReply::finished callback arms a 3-second
QTimer::singleShot to give outstanding probes time to complete.
2. Each probe completion path checks (m_scanFinished && pendingProbes==0)
and calls finishDiscovery() early if all probes are already done.
A m_finished bool guard prevents double-emission of discoveryFinished()
if both paths fire in quick succession (e.g. all probes complete exactly
as the timer fires).
Manual-entry (createMethod "user") skips discovery entirely; setupThing()
is called directly with the user-supplied IP.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
// SPDX-License-Identifier: GPL-3.0-or-later
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#ifndef V2CTCPDISCOVERY_H
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#define V2CTCPDISCOVERY_H
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#include <QObject>
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#include <QDateTime>
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#include <QNetworkAccessManager>
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#include <QHash>
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#include <network/networkdevicediscovery.h>
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/*!
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* \brief Network discovery for V2C Trydan chargers (Modbus TCP).
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*
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* Uses nymea's NetworkDeviceDiscovery to enumerate LAN hosts, then probes
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* each one with \c GET /RealTimeData (the V2C Trydan HTTP REST API) to
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* confirm it is a Trydan. The probe is HTTP — not Modbus — because the
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* Trydan has no network-accessible Modbus discovery mechanism.
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* cf. AGENTS.md § HTTP and evcc charger/trydan.go.
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*
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* Manual-entry (createMethod "user") bypasses discovery entirely;
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* the plugin calls setupThing() directly with the user-supplied IP.
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*/
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class V2cTcpDiscovery : public QObject
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{
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Q_OBJECT
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public:
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struct Result {
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NetworkDeviceInfo networkDeviceInfo;
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QString ipAddress;
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};
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explicit V2cTcpDiscovery(NetworkDeviceDiscovery *networkDeviceDiscovery,
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QObject *parent = nullptr);
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void startDiscovery();
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/*! \brief Results available after discoveryFinished() is emitted. */
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QList<Result> results() const;
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signals:
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void discoveryFinished();
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private:
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void probeAddress(const QHostAddress &address);
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void finishDiscovery();
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NetworkDeviceDiscovery *m_networkDeviceDiscovery = nullptr;
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QNetworkAccessManager m_nam;
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QDateTime m_startTime;
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NetworkDeviceInfos m_networkDeviceInfos;
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int m_pendingProbes = 0;
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QList<Result> m_results;
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bool m_scanFinished = false;
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bool m_finished = false;
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};
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#endif // V2CTCPDISCOVERY_H
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