feat: add CLM request for channel level list (message ID 1025)

src/protocol.cpp

@@ -484,6 +484,14 @@ CONNECTION LESS MESSAGES
 
     note: does not have any data -> n = 0
 
+
+- PROTMESSID_CLM_REQ_CHANNEL_LEVEL_LIST: Request the channel level list
+
+    note: does not have any data -> n = 0
+
+    the server replies with one PROTMESSID_CLM_CHANNEL_LEVEL_LIST to the
+    requesting address
+
 */
 
 #include "protocol.h"
@@ -980,6 +988,10 @@ void CProtocol::ParseConnectionLessMessageBody ( const CVector<uint8_t>& vecbyMe
     case PROTMESSID_CLM_REQ_WELCOME_MESSAGE:
         EvaluateCLReqWelcomeMessageMes ( InetAddr );
         break;
+
+    case PROTMESSID_CLM_REQ_CHANNEL_LEVEL_LIST:
+        EvaluateCLReqChannelLevelListMes ( InetAddr );
+        break;
     }
 }
 
@@ -2700,6 +2712,14 @@ void CProtocol::CreateCLWelcomeMessageMes ( const CHostAddress& InetAddr, const
     CreateAndImmSendConLessMessage ( PROTMESSID_CLM_WELCOME_MESSAGE, vecData, InetAddr );
 }
 
+bool CProtocol::EvaluateCLReqChannelLevelListMes ( const CHostAddress& InetAddr )
+{
+    // invoke message action
+    emit CLReqChannelLevelList ( InetAddr );
+
+    return false; // no error
+}
+
 /******************************************************************************\
 * Message generation and parsing                                               *
 \******************************************************************************/

src/protocol.h

@@ -110,6 +110,7 @@
 #define PROTMESSID_CLM_REQ_SERVER_FEATURES    1020 // request server features
 #define PROTMESSID_CLM_WELCOME_MESSAGE        1021 // server welcome message
 #define PROTMESSID_CLM_REQ_WELCOME_MESSAGE    1022 // request server welcome message
+#define PROTMESSID_CLM_REQ_CHANNEL_LEVEL_LIST 1025 // request channel level list (connectionless)
 
 // special IDs
 #define PROTMESSID_SPECIAL_SPLIT_MESSAGE 2001 // a container for split messages
@@ -312,6 +313,7 @@ class CProtocol : public QObject
     bool EvaluateCLRegisterServerResp ( const CHostAddress& InetAddr, const CVector<uint8_t>& vecData );
     bool EvaluateCLReqServerFeaturesMes ( const CHostAddress& InetAddr );
     bool EvaluateCLReqWelcomeMessageMes ( const CHostAddress& InetAddr );
+    bool EvaluateCLReqChannelLevelListMes ( const CHostAddress& InetAddr );
 
     int iOldRecID;
     int iOldRecCnt;
@@ -381,4 +383,5 @@ public slots:
     void CLRegisterServerResp ( CHostAddress InetAddr, ESvrRegResult eStatus );
     void CLReqServerFeatures ( CHostAddress InetAddr );
     void CLReqWelcomeMessage ( CHostAddress InetAddr );
+    void CLReqChannelLevelList ( CHostAddress InetAddr );
 };

src/server.cpp

@@ -296,6 +296,8 @@ CServer::CServer ( const int          iNewMaxNumChan,
 
     QObject::connect ( &ConnLessProtocol, &CProtocol::CLReqWelcomeMessage, this, &CServer::OnCLReqWelcomeMessage );
 
+    QObject::connect ( &ConnLessProtocol, &CProtocol::CLReqChannelLevelList, this, &CServer::OnCLReqChannelLevelList );
+
     QObject::connect ( &ServerListManager, &CServerListManager::SvrRegStatusChanged, this, &CServer::SvrRegStatusChanged );
 
     QObject::connect ( &JamController, &recorder::CJamController::RestartRecorder, this, &CServer::RestartRecorder );

src/server.h

@@ -405,6 +405,11 @@ public slots:
 
     void OnCLReqWelcomeMessage ( CHostAddress InetAddr );
 
+    void OnCLReqChannelLevelList ( CHostAddress InetAddr )
+    {
+        ConnLessProtocol.CreateCLChannelLevelListMes ( InetAddr, vecChannelLevels, GetNumberOfConnectedClients() );
+    }
+
     void OnCLDisconnection ( CHostAddress InetAddr );
 
     void OnAboutToQuit();