/// <summary>
/// Called before the call to select().
/// </summary>
public void BeforeSelect(SelectSockets selectSockets)
{
try
{
if (Status == EAnpThreadChannelStatus.Initial) BeforeSelectInitial(selectSockets);
else if (Status == EAnpThreadChannelStatus.Connecting) BeforeSelectConnecting(selectSockets);
else if (Status == EAnpThreadChannelStatus.Handshake) BeforeSelectHandshake(selectSockets);
else if (Status == EAnpThreadChannelStatus.Open) BeforeSelectOpen(selectSockets);
}
catch (Exception ex)
{
HandleError(ex);
selectSockets.LowerTimeout(0);
}
}
/// <summary>
/// Try to connect to the KWM.
/// </summary>
public override void BeforeSelectInitial(SelectSockets selectSockets)
{
// Get the connection info.
ClientThread.GetConnectInfo();
// Try to connect.
Sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Sock.Blocking = false;
try
{
Sock.Connect(new IPEndPoint(IPAddress.Loopback, ClientThread.Port));
}
catch (SocketException ex)
{
// This exception will always happen after we try async
// connect. Awesome API there.
if (ex.SocketErrorCode != SocketError.WouldBlock) throw;
}
// We're now connecting.
Status = EAnpThreadChannelStatus.Connecting;
selectSockets.LowerTimeout(0);
}
public override void BeforeSelectHandshake(SelectSockets selectSockets)
{
double timeout = GetHandshakeTimeout();
if (timeout <= 0) throw new Exception("timeout waiting for client authentication data");
selectSockets.AddRead(Sock);
selectSockets.LowerTimeout((int)timeout);
}
/// <summary>
/// Check if we are connected.
/// </summary>
public override void BeforeSelectConnecting(SelectSockets selectSockets)
{
// The socket is connected.
if (Sock.Poll(0, SelectMode.SelectWrite))
{
Status = EAnpThreadChannelStatus.Handshake;
selectSockets.LowerTimeout(0);
}
// The connection has failed.
else if (Sock.Poll(0, SelectMode.SelectError))
{
throw new Exception("the connection to the KWM could not be established");
}
// Add the socket in the write set and wait forever.
else
{
selectSockets.AddWrite(Sock);
}
}