Method acceptConnection

app/src/API/Server.cpp:1242–1290

* @brief Accepts new incoming TCP connections. */

 * @brief Accepts new incoming TCP connections.
 */
void API::Server::acceptConnection()
{
  Q_ASSERT(m_server.isListening());
  Q_ASSERT(m_enabled);

  auto* socket = m_server.nextPendingConnection();
  if (!socket) {
    if (enabled())
      Misc::Utilities::showMessageBox(
        tr("API server"), tr("Invalid pending connection"), QMessageBox::Critical);

    return;
  }

  if (!enabled()) {
    socket->close();
    socket->deleteLater();
    return;
  }

  if (m_connections.size() >= kMaxApiClients) {
    qWarning() << "[API] Max clients limit exceeded:" << socket->peerAddress().toString() << ":"
               << socket->peerPort() << "- Current clients:" << m_connections.size()
               << "- Limit:" << kMaxApiClients << "- Rejecting connection";

    socket->abort();
    socket->deleteLater();
    return;
  }

  connect(socket, &QTcpSocket::errorOccurred, this, &Server::onErrorOccurred);

  ConnectionState state;
  state.sessionId   = QString::number(s_nextSessionId.fetchAndAddRelaxed(1));
  state.peerAddress = socket->peerAddress().toString();
  state.peerPort    = socket->peerPort();

  state.authenticated = !(m_externalConnections && !socket->peerAddress().isLoopback());
  m_connections.insert(socket, state);

  qInfo() << "[API] New client connected:" << state.peerAddress << ":" << state.peerPort
          << "- Total clients:" << m_connections.size();

  socket->setParent(nullptr);
  socket->moveToThread(&m_workerThread);

  auto* worker = static_cast<ServerWorker*>(m_worker);
  QMetaObject::invokeMethod(worker, "addSocket", Qt::QueuedConnection, Q_ARG(QTcpSocket*, socket));
}

/**
 * @brief Handles socket-level errors from connected clients.