Super simple and super naive threaded socket server with async/await

Program.cs

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading.Tasks;

namespace Test {
    internal class Program {
        public static void Main() {
            var client = Task.Run(() => Client());
            var server = Task.Run(() => Server());
            Task.WaitAll(client, server);
        }

        public static async Task Client() {
            await Task.Delay(1000);
            using (var client = new TcpClient()) {
                await client.ConnectAsync("localhost", 8080);
                using (var stream = client.GetStream())
                using (var reader = new StreamReader(stream))
                using (var writer = new StreamWriter(stream)) {
                    var line = await reader.ReadLineAsync();
                    Console.WriteLine("Client: Message from server: {0}", line);
                    await writer.WriteLineAsync(line);
                    await writer.FlushAsync();
                }
            }
        }

        public static async Task Server() {
            var listener = new TcpListener(IPAddress.Any, 8080);
            listener.Start();
            while (true) {
                var client = await listener.AcceptTcpClientAsync();
                Task.Run(() => ServerForClient(client));
            }
        }

        public static async Task ServerForClient(TcpClient client) {
            using (client)
            using (var stream = client.GetStream())
            using (var reader = new StreamReader(stream))
            using (var writer = new StreamWriter(stream)) {
                await writer.WriteLineAsync("Hello client!");
                await writer.FlushAsync();
                var line = await reader.ReadLineAsync();
                Console.WriteLine("Server: Message from client: {0}", line);
            }
        }
    }
}