/// <summary>
/// Disconnect and stop cilent
/// </summary>
public void Stop()
{
IsStarted = false;
MulticastIpAddress = null;
StopExchange();
_exchangeInterface?.Dispose();
_exchangeInterface = null;
}
/// <summary>
/// Start client
/// </summary>
/// <param name="multicastAddr"> The multicast System.Net.IPAddress of the group you want to join.</param>
/// <param name="destinationPort"> The port on which to listen for incoming connection attempts.</param>
/// <param name="exchangeType"> type if client</param>
public void Start(IPAddress multicastAddr, int destinationPort, ExchangeType exchangeType)
{
if (multicastAddr.AddressFamily != AddressFamily.InterNetwork)
{
throw new ArgumentException("multicastAddr must be ipv4");
}
var arr = IPAddress.Parse("224.0.0.0").GetAddressBytes();
if (BitConverter.IsLittleEndian)
{
Array.Reverse(arr);
}
var startAddrRange = BitConverter.ToUInt32(arr, 0);
arr = IPAddress.Parse("239.255.255.255").GetAddressBytes();
if (BitConverter.IsLittleEndian)
{
Array.Reverse(arr);
}
var endAddrRange = BitConverter.ToUInt32(arr, 0);
arr = multicastAddr.GetAddressBytes();
if (BitConverter.IsLittleEndian)
{
Array.Reverse(arr);
}
var addr = BitConverter.ToUInt32(arr, 0);
if (addr < startAddrRange)
{
throw new ArgumentException("multicastAddr must be in diapason of 224.0.0.0 - 239.255.255.255");
}
if (addr > endAddrRange)
{
throw new ArgumentException("multicastAddr must be in diapason of 224.0.0.0 - 239.255.255.255");
}
MulticastIpAddress = multicastAddr;
_exchangeInterface?.Dispose();
UdpClient client;
switch (exchangeType)
{
case ExchangeType.Sender:
client = new UdpClient(AddressFamily.InterNetwork);
break;
case ExchangeType.SenderAndReceiver:
client = new UdpClient(destinationPort, AddressFamily.InterNetwork);
break;
default:
throw new ArgumentOutOfRangeException(nameof(exchangeType), exchangeType, null);
}
client.JoinMulticastGroup(multicastAddr);
Thread.Sleep(100);
_exchangeInterface = new IgmpNetworkExchangeInterface(client, multicastAddr, destinationPort);
_exchangeInterface.ErrorEvent += _exchangeInterface_ErrorEvent;
switch (exchangeType)
{
case ExchangeType.Sender:
StartExchange(_exchangeInterface, false);
break;
case ExchangeType.SenderAndReceiver:
StartExchange(_exchangeInterface);
break;
default:
throw new ArgumentOutOfRangeException(nameof(exchangeType), exchangeType, null);
}
IsStarted = true;
}
