public Server(ProtocolConfiguration config)
{
if (config == null) throw new ArgumentNullException("config");
this.config = config;
// PGM or UDP:
if (config.UsePGM)
{
s = new Socket(AddressFamily.InterNetwork, SocketType.Rdm, PGM.IPPROTO_RM);
}
else
{
s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
}
if (config.UseNonBlockingIO)
s.UseOnlyOverlappedIO = true;
s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
// Calculate send window buffer size:
var sendWindow = new PGM.RMSendWindow(config.SendRateKBitsPerSec, config.SendWindowSize);
if (config.UsePGM)
{
// PGM:
s.Bind(new IPEndPoint(IPAddress.Any, config.MulticastEndpoint.Port));
// NOTE(jsd): This option fails here:
//s.SetSocketOption(PGM.IPPROTO_RM, PGM.RM_SEND_WINDOW_ADV_RATE, 50);
// Set the window size parameters (very important for good bandwidth utilization):
s.SetSocketOption(PGM.IPPROTO_RM, PGM.RM_RATE_WINDOW_SIZE, sendWindow);
}
else
{
// Multicast UDP:
s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.SendBuffer, (int)sendWindow.WindowSizeInBytes);
if (config.UseLoopback)
{
s.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 2);
}
}
}
public Client(ProtocolConfiguration config)
{
if (config == null) throw new ArgumentNullException("config");
this.config = config;
if (config.UsePGM)
{
this.s = new Socket(AddressFamily.InterNetwork, SocketType.Rdm, PGM.IPPROTO_RM);
}
else
{
this.s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
}
this.s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
// Calculate send window buffer size:
var sendWindow = new PGM.RMSendWindow(config.SendRateKBitsPerSec, config.SendWindowSize);
this.s.ReceiveBufferSize = (int)sendWindow.WindowSizeInBytes;
if (config.UseNonBlockingIO)
this.s.UseOnlyOverlappedIO = true;
}
