tun socket propagation

stream/ch/chain/net/srv/vpn/DapStreamChChainNetSrvVpn.cpp

@@ -336,6 +336,10 @@ void ChChainNetSrvVpn::workerStart(int a_tunSocket)
     tun->workerStart(); // start loop
 }
 
+int ChChainNetSrvVpn::tunSocket() {
+    return tun->m_tunSocket;
+}
+
 /**
  * @brief ChChainNetSrvVpn::onPktIn
  * @param pkt

stream/ch/chain/net/srv/vpn/DapStreamChChainNetSrvVpn.h

@@ -113,7 +113,7 @@ namespace Dap {
 
             void tunCreate (const QString& a_addr, const QString& a_gw);
             void workerStart(int a_tunSocket);
-
+            int tunSocket();
             quint16 addForwarding(const QString remoteAddr, quint16 remotePort, quint16 localPort);
             void delForwarding(int sockId);
             void delForwardingAll();