Implements a very easy to use sockets API based on IObservable. It allows very simple protocol implementations such as:
var client = new ReactiveClient("127.0.0.1", 1055);
// The parsing of messages is done in a simple Rx query over the receiver observable
// Note this protocol has a fixed header part containing the payload message length
// And the message payload itself. Bytes are consumed from the client.Receiver // automatically so its behavior is intuitive.
IObservable<string> messages = from header in client.Receiver.Buffer(4)
let length = BitConverter.ToInt32(header.ToArray(), 0)
let body = client.Receiver.Take(length)
select Encoding.UTF8.GetString(body.ToEnumerable().ToArray());
// Finally, we subscribe on a background thread to process messages when they are available
messages.SubscribeOn(TaskPoolScheduler.Default).Subscribe(message => Console.WriteLine(message));
client.ConnectAsync().Wait();
Creating the server implementation is equally straightforward (this is an echo server for the same message format):
var server = new ReactiveListener(1055);
server.Connections.Subscribe(socket =>
{
IObservable<string> messages = from header in socket.Receiver.Buffer(4)
let length = BitConverter.ToInt32(header.ToArray(), 0)
let body = socket.Receiver.Take(length)
select Encoding.UTF8.GetString(body.ToEnumerable().ToArray());
// Echo the incoming message with the same format.
messages.Subscribe(message =>
{ var body = encoding.GetBytes(message);
var header = BitConverter.GetBytes(body.Length);
var payload = header.Concat(body).ToArray();
socket.SendAsync(payload).Wait();
});
});
server.Start();
Install using: install-package reactivesockets
This library was inspired by this forum post and blog entry.