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Async Server Code Example
The following C# example demonstrates an Async Echo Server in a console environment. The server uses on-demand IO completion threads to handle clients.
static void Main(string args)
Server server1 = new Server();
//Start the echo server on port 7.
//Each client is processed on its own worker thread.
server1.Start(new ConnectThreadStart(acceptConnection), 7, null);
Console.WriteLine("Server started. Press <enter> to stop.");
static void acceptConnection(TcpBase connection, object state)
//While connection is open, echo data received back to the client.
//This function executes on a worker thread.
byte buffer = new byte;
Data data = connection.Read(buffer);
if (data != null)
connection.Write(data.Buffer, data.Offset, data.Count);
} while (connection.State == Dart.Sockets.ConnectionState.Connected);
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