/// <summary>
/// Starts listesting for server updates, any received updates are pushed into serverCommands queue.
/// </summary>
/// <param name="listenOn">local IP+port on which should the client listen for the updates.</param>
/// <returns>when server ends the connection or <paramref name="active"/>'' is set.</returns>
async Task ListenForServerCommandsAsync(IPEndPoint listenOn)
{
updatesFromServer = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
updatesFromServer.Bind(listenOn);
Console.WriteLine($"Started listening for server updates on {listenOn}");
while (active)
{
var bytes = await Communication.UDPReceiveMessageAsync(updatesFromServer, 1024);
var newLastProcessedCUID = Serialization.DecodeInt(bytes.Item1, 0);
var cmd = ServerCommand.Decode(bytes.Item1, 4);
lock (this)
{
//Only add newer updates.
if (newLastProcessedCUID >= LastProcessedClientUpdateID)
{
AddServerCommand(cmd);
UpdLastProcCUID(newLastProcessedCUID);
}
}
}
updatesFromServer.Shutdown(SocketShutdown.Both);
updatesFromServer.Close();
}