用AsyncCtp实现一个简单的EchoServer

看到今天又支持SP1的AsyncCTP下载了，下载试用了一下，顺便写了一个EchoServer。

    static void Main(string[] args)
    {
        var listener = new TcpListener(new IPEndPoint(IPAddress.Loopback, 3000));

        listener.Start();
        while (true)
        {
            var client = listener.AcceptTcpClient();

            TaskEx.Run(async () =>
                {
                    using (var stream = client.GetStream())
                    using (var writer = new StreamWriter(stream) { AutoFlush = true })
                    using (var reader = new StreamReader(stream))
                    {
                        var line = string.Empty;
                        while ((line =  await reader.ReadLineAsync()) != null)
                        {
                            await writer.WriteAsync(">>> " + line + Environment.NewLine);
                        }
                        Console.WriteLine("connection closed");
                    }
                });
        }
    }

基本上和用同步的方式差不多，非常直接。