static void Main(string[] args)
{
if (args.Length != 3 && args.Length != 1 && args.Length != 2 && args.Length != 4)
{
Console.WriteLine("Usage: StreamTerminal [<email> <password>] <device_id> [--echo]");
Console.WriteLine("Example: StreamTerminal.exe echo.u.nabto.net");
Console.WriteLine(" When the stream to echo.u.nabto.net is created select the echo service by typing 'echo<enter>' at the prompt.");
Console.WriteLine(" Default user is 'guest'.");
Console.WriteLine(" To enable local echo use the '--echo' switch.");
Environment.Exit(1);
}
string email = "guest";
string password = "";
string deviceId = "";
if (args[0].Contains("@"))
{
email = args[0];
password = args[1];
deviceId = args[2];
}
else
{
deviceId = args[0];
}
var localEcho = false;
if (args[args.Length - 1] == "--echo")
{
localEcho = true;
}
if (!deviceId.Contains("."))
{
throw new Exception("Invalid device ID");
}
Console.WriteLine("Connecting...");
try
{
Console.WriteLine("Starting Nabto...");
NabtoClient nabto = new NabtoClient(); // Get a reference to the Nabto client runtime and start it up.
Console.WriteLine("Creating session...");
using (Session session = nabto.CreateSession(email, password)) // Create a session using the specified user credentials.
{
Console.WriteLine("Creating connection to device...");
using (DeviceConnection deviceConnection = session.CreateDeviceConnection(deviceId)) // create connection to device
{
Console.WriteLine("Creating stream...");
using (DeviceStream stream = deviceConnection.CreateStream()) // create stream to device
{
var encoding = new UTF8Encoding();
var run = true;
var buffer = new byte[1500];
var stringBuilder = new StringBuilder();
Console.WriteLine("Connected. Press ctrl+¨ to disconnect.");
while (run)
{
if (stream.DataAvailable) // data received from device?
{
var length = stream.Read(buffer, 0, buffer.Length); // read data into buffer
var message = encoding.GetString(buffer, 0, length); // convert to text
Console.Write(message);
}
if (Console.KeyAvailable) // user input?
{
while (Console.KeyAvailable) // read all user input
{
var key = Console.ReadKey(true);
if (key.KeyChar == 0x1d) // terminate
{
run = false;
Console.WriteLine();
Console.WriteLine("Disconnecting...");
}
else if (key.Key == ConsoleKey.Enter)
{
stringBuilder.Append(Environment.NewLine);
}
else
{
stringBuilder.Append(key.KeyChar); // gather all characters from user
}
}
if (stringBuilder.Length > 0)
{
var s = stringBuilder.ToString(); // text from user
stringBuilder.Clear();
var b = encoding.GetBytes(s); // convert to byte array
stream.Write(b, 0, b.Length); // ...and send it to the device
if (localEcho)
{
Console.Write(s);
}
}
}
Thread.Sleep(1);
}
}
}
}
Console.WriteLine("Disconnected.");
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
}