Add NetworkDriver interface pointer to NetworkConfig

Source/Engine/Networking/NetworkConfig.h

@@ -4,6 +4,8 @@
 
 #include "Engine/Platform/Network.h"
 
+class PersistentScriptingObject;
+
 /// <summary>
 /// Network driver implementations enum.
 /// </summary>
@@ -33,7 +35,12 @@ public:
     /// </summary>
     API_FIELD()
     NetworkDriverType NetworkDriverType = NetworkDriverType::ENet;
-    // TODO: Expose INetworkDriver as a ref not enum, when C++/C# interfaces are done.
+
+    /// <summary>
+    /// The network driver instance that will be used to create and manage the peer, send and receive messages.
+    /// </summary>
+    API_FIELD()
+    PersistentScriptingObject* NetworkDriver = nullptr;
 
 public:
     /// <summary>

Source/Engine/Networking/NetworkPeer.cpp

@@ -20,7 +20,7 @@ void NetworkPeer::Initialize(const NetworkConfig& config)
     Config = config;
 
     ASSERT(NetworkDriver == nullptr);
-    ASSERT(Config.NetworkDriverType != NetworkDriverType::Undefined);
+    ASSERT(Config.NetworkDriver != nullptr);
     ASSERT(Config.ConnectionsLimit > 0);
     ASSERT(Config.MessageSize > 32); // TODO: Adjust this, not sure what the lowest limit should be.
     ASSERT(Config.MessagePoolSize > 128);
@@ -35,7 +35,7 @@ void NetworkPeer::Initialize(const NetworkConfig& config)
         MessagePool.Push(messageId);
 
     // Setup network driver
-    NetworkDriver = New<ENetDriver>();
+    NetworkDriver = ToInterface<INetworkDriver>(Config.NetworkDriver);
     NetworkDriver->Initialize(this, Config);
 
     LOG(Info, "NetworkManager initialized using driver = {0}", static_cast<int>(Config.NetworkDriverType));