/// <summary>
/// Create a PixelFormat object from a data packet describing it
/// </summary>
/// <param name="packet">The data packet.</param>
/// <returns>A new <see cref="PixelFormat"/> object</returns>
public static PixelFormat FromServerInit(byte[] packet)
{
var format = new PixelFormat();
format.BitsPerPixel = packet[4];
format.Depth = packet[5];
format.IsBigEndian = packet[6] != 0;
format.IsTrueColor = packet[7] != 0;
format.RedMax = (packet[8] << 8) | packet[9];
format.GreenMax = (packet[10] << 8) | packet[11];
format.BlueMax = (packet[12] << 8) | packet[13];
format.RedShift = packet[14];
format.GreenShift = packet[15];
format.BlueShift = packet[16];
return format;
}
/// <summary>Initialize the connection.</summary>
/// <param name="shareDesktop">Indicates whether the desktop is shared.</param>
/// <returns>An async task</returns>
public override async Task<string> InitializeAsync(bool shareDesktop)
{
using (await this.exclusiveLock.Enter())
{
if ((this.RequiresPassword && this.ConnectionState != ConnectionState.SendingPassword)
|| (this.RequiresPassword == false && this.ConnectionState != ConnectionState.Handshaking))
{
throw new InvalidOperationException();
}
this.ConnectionState = ConnectionState.Initializing;
using (var cancellation = new CancellationTokenSource())
{
cancellation.CancelAfter(DefaultTimeout);
var share = new byte[] { (byte)(shareDesktop ? 1 : 0) };
await this.writeStream.WriteAsync(share, 0, 1, cancellation.Token);
await this.writeStream.FlushAsync();
}
var packet = new byte[ServerInitHeaderLength];
using (var cancellation = new CancellationTokenSource())
{
cancellation.CancelAfter(DefaultTimeout);
await this.ReadPacketAsync(packet, cancellation.Token);
}
this.Width = (packet[0] << 8) | packet[1];
this.Height = (packet[2] << 8) | packet[3];
this.pixelFormat = PixelFormat.FromServerInit(packet);
var nameLength = ConvertBigEndianU32(packet, 20);
packet = new byte[nameLength];
using (var cancellation = new CancellationTokenSource())
{
cancellation.CancelAfter(DefaultTimeout);
var ignored = this.ReadPacketAsync(packet, cancellation.Token);
}
this.Name = Encoding.UTF8.GetString(packet, 0, packet.Length);
this.Initialized = true;
this.ConnectionState = ConnectionState.Connected;
return this.Name;
}
}