Connecting UE5 client to a custom C++ server

Development Programming & Scripting Multiplayer & Networking
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1

Long story short,

I have a server that fed an old game engine that has become stale, started to convert the client code to unity, but there is alot of things I didn’t like, so I am looking to move the client to UE5.

I do not want to use the native networking in UE5 as I have a completely built and working custom server that has code from 5+ years of work. I do not want to convert all of this to the replication process that UE uses to drive multiplayer. I instead want to utilize my server that is made of (non-boost) asio for managing packets and C# code with aws integration.

Can someone direct me to some information on utilizing the UE engine as a basic client to send and receive packet information about game state? I really just need my UE5 actor to package tcp/udp and send them according to my server enum.

I am more than welcome to share some insight into the server side code if people are interested.

Thanks in advance.

2

If you give up the DS server architecture of UE4, then you have to give up the entire Gameplay framework.

I do it this way.
Declare a global client Socket variable directly

 namespace shine::client
{
	class AppManager
	{
	public:
		AppManager();
		~AppManager();
		void  init();
	};
	extern int  run();
	extern void onUpdate();
	extern TcpClient* __TcpClient;  //Tcp Client
}

Then send and receive data through your own custom API interface

Read Data:

	void onLogin(net::TcpClient* tcp)
	{
		uint16 childcmd = 0;
		tcp->read(childcmd);
		
		if (__OvInst != nullptr)
			__OvInst->onLoginCallBack(childcmd);
	}

Then you can go to the blueprint through the CMD command and the error code (childcmd) to do the corresponding things

send data:

__TcpClient->begin(cmd);
__TcpClient->sss(value);
__TcpClient->end(cmd);   //packet
1 Like
3

thank you! Going to experiment with this.