FirebaseStreaming.cs

static async Task Listen(string url)
{
    HttpClient client = new HttpClient();
    client.Timeout = TimeSpan.FromHours(1);
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/event-stream"));
 
    var response = await client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead);
 
    using(var content = await response.Content.ReadAsStreamAsync())
    using (StreamReader sr = new StreamReader(content))
    {
        while (true)
        {
            Console.WriteLine(await sr.ReadLineAsync());
        }
    }
}
 
/*
  Listen("https://[YOUR HOST].firebaseio.com/test.json").Wait();
 
  curl -X POST -d "{\"user\": \"me\", \"body\": \"Yey!\"}" https://[YOUR HOST].firebaseio.com/test.json
*/