C# TcpClient: Send serialized objects using separators?

Here is a generic example to send objects between client and server using Json.Net. It uses NewLine char as separator. So All you need is to create StreamReader and StreamWriter from network streams and to use ReadLine and WriteLine methods….

(PS: Since Json.Net escapes NewLine char in serialization, messages containing it doesn’t cause problems…)

void SendObject<T>(StreamWriter s, T o)
{
    s.WriteLine( JsonConvert.SerializeObject(o) );
    s.Flush();
}

T ReadObject<T>(StreamReader r)
{
    var line = r.ReadLine();
    if (line == null) return default(T);
    return JsonConvert.DeserializeObject<T>(line);
}

---

SemaphoreSlim serverReady = new SemaphoreSlim(0);
//SERVER
Task.Factory.StartNew(() =>
    {
        TcpListener listener = new TcpListener(IPAddress.Any, 8088);
        listener.Start();
        serverReady.Release();
        while(true)
        {
            var client = listener.AcceptTcpClient();
            Task.Factory.StartNew(() =>
                {
                    Console.WriteLine("Client connected...");
                    var reader = new StreamReader(client.GetStream());
                    var obj = ReadObject<string>( reader) ;
                    while(obj != null)
                    {
                        Console.WriteLine("[" + obj + "]");
                        obj = ReadObject<string>(reader);
                    }
                    Console.WriteLine("Client disconnected...");
                });
        }

    });


serverReady.Wait();
//CLIENT
Task.Factory.StartNew(() =>
{
    TcpClient client = new TcpClient();
    client.Connect("localhost", 8088);
    var writer = new StreamWriter(client.GetStream());
    for (int i = 0; i < 10; i++)
    {
        SendObject(writer, "test\nmessage" + i); //message containing `\n` :)
    }
    client.Close();
});