System.net.sockets.socketexception: 'no connection could be made because the target machine actively refused it 127.0.0.1:49778'

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C#

server

I'm trying to connect a server using socket, and i got this exeption:
System.Net.Sockets.SocketException: 'No connection could be made because the target machine actively refused it 127.0.0.1:49778'

this is the code:

private static bool IsActive(string port)
        {
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPAddress iPAddress = IPAddress.Parse("127.0.0.1");
            IPEndPoint iPEndPoint = new IPEndPoint(iPAddress, int.Parse(port));
            try
            {
                var TryConnect = Task.Run(() => socket.Connect(iPEndPoint));
                if (TryConnect.Wait(TimeSpan.FromSeconds(1)))
                {
                    byte[] buffer = ASCIIEncoding.ASCII.GetBytes("exit");
                    socket.Send(buffer, 0, buffer.Length, SocketFlags.None);
                    return true;
                }

            }catch (Exception e) { }
            return false;
        }

connect to server:

static void Main(string[] args)
        {
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            Server_Session(socket);
            if(socket.Connected)
                Listen(socket);
        }
        private static void Server_Session(Socket socket)
        {
            IPAddress sreverIPAddress = IPAddress.Parse("127.0.0.1");
            IPEndPoint iPEndPoint = new IPEndPoint(sreverIPAddress, 8080);
            Console.WriteLine("connecting...");
            socket.Connect(iPEndPoint);
            Console.WriteLine("hello client : " + socket.LocalEndPoint);
            string msg = "client";
            byte[] buffer = aSCII.GetBytes(msg);
            socket.Send(buffer, 0, buffer.Length, SocketFlags.None);
            Upload_Conversation(socket);
            if(socket.Connected)
                Listen(socket);
        }

i don't know how to solve it... please help

What I have tried:

i don't even know what to do...