Initial commit

Lts/Proxies/CombatNetRadio/WebSocketInterface/Connection/connection_handler.cpp

@@ -0,0 +1,114 @@
+/**
+  * @RDE_HEADER@
+  * The ConnectionHandler class functions as a WebSocket server and manages incoming client connections.
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Hannes Fritsche, SLSE, 2017-09-07
+  */
+#include "connection_handler.h"
+
+#include "client_connection.h"
+
+#include <QtWebSockets/QWebSocketServer>
+#include <QtWebSockets/QWebSocket>
+
+using namespace CombatNetRadio::WebSocketInterface::Connection;
+
+ConnectionHandler::ConnectionHandler()
+  : m_server(nullptr)
+  , m_logger(getLogger("ConnectionHandler"))
+{
+}
+
+ConnectionHandler::~ConnectionHandler()
+{
+  for (auto s : qAsConst(m_connections))
+    s->disconnect(this);
+  qDeleteAll(m_connections);
+}
+
+bool ConnectionHandler::init()
+{
+  if (m_server != nullptr)
+  {
+    m_server->disconnect();
+    delete m_server;
+  }
+  // TODO: get a server name from config ?
+  // TODO: get the SslMode from config ?
+  m_server = new QWebSocketServer(QStringLiteral("RDE-EXC"), QWebSocketServer::NonSecureMode, this);
+
+  connect(m_server, &QWebSocketServer::newConnection, this, &ConnectionHandler::onNewConnection);
+  connect(m_server, &QWebSocketServer::serverError, this, &ConnectionHandler::onServerError);
+
+  // TODO: read port from config?
+  quint16 port = 2081;
+  DEBUG_LOG(m_logger) << "Trying to listen to port " << port;
+  if (!m_server->listen(QHostAddress::Any, port))
+  {
+    ERROR_LOG(m_logger) << "Not possible to listen to port " << port;
+    return false;
+  }
+  DEBUG_LOG(m_logger) << "... ok";
+
+  return true;
+}
+
+void ConnectionHandler::onUpdate()
+{
+  emit clearFrequencyPlanningStatus();
+  for (ClientConnection *currentConnection : qAsConst(m_connections))
+    currentConnection->addMessage(Messages::UpdateMessage());
+}
+
+void ConnectionHandler::onNewMessage(CombatNetRadio::WebSocketInterface::Messages::MessageTransmitter *transmitter, const QString &message)
+{
+  emit newTextMessageFromClient(transmitter, message);
+}
+
+void ConnectionHandler::onServerError(QWebSocketProtocol::CloseCode closeCode)
+{
+  ERROR_LOG(m_logger) << "Got server error with close code " << closeCode;
+}
+
+void ConnectionHandler::onNewConnection()
+{
+  while (m_server->hasPendingConnections())
+  {
+    QWebSocket       *socket = m_server->nextPendingConnection();
+    ClientConnection *newConnection = new ClientConnection(socket, this);
+
+    if (!newConnection->init())
+    {
+      ERROR_LOG(m_logger) << "Failed to initialise new client";
+      delete newConnection;
+      newConnection = nullptr;
+      continue;
+    }
+
+    connect(newConnection, &ClientConnection::newTextMessage, this, &ConnectionHandler::onNewMessage);
+    connect(newConnection, &ClientConnection::disconnected, this, &ConnectionHandler::onDisconnected);
+
+    m_connections.append(newConnection);
+    DEBUG_LOG(m_logger) << "New client with ip " << newConnection->ip().toString() << " connected";
+    emit newClientConnection((qint64) static_cast<WebSocketInterface::Connection::ClientConnection::MessageTransmitter*>(newConnection));
+  }
+}
+
+void ConnectionHandler::onDisconnected(ClientConnection *conn)
+{
+  bool   removeCount = m_connections.removeOne(conn);
+  Q_ASSERT(removeCount == 1);
+  conn->deleteLater(); // use deleteLater() as the signal is emitted from with ClientConnection
+
+  emit clientConnectionClosed((qint64) static_cast<WebSocketInterface::Connection::ClientConnection::MessageTransmitter*>(conn));
+  if (m_connections.empty())
+    emit lastConnectionClosed();
+}
+
+void ConnectionHandler::onPositions(const CombatNetRadio::WebSocketInterface::Messages::ReplyMessage &positionsCnr)
+{
+  for (ClientConnection *currentConnection : qAsConst(m_connections))
+    currentConnection->addMessage(positionsCnr);
+}