private void BeginSend()
{
if (_running == 0)
{
return;
}
RawData raw;
if (!_sendingQueue.TryDequeue(out raw))
{
System.Threading.Interlocked.Exchange(ref _writing, 0);
return;
}
UDPSocket socket = _socket;
IPEndPoint remoteEP = (IPEndPoint)raw.EndPoint;
if (remoteEP.AddressFamily == AddressFamily.InterNetwork)
{
if (_socketBackup != null)
{
// use the separated socket of IPv4 to deal with IPv4 conversions.
socket = _socketBackup;
}
else if (_socket.Socket.AddressFamily == AddressFamily.InterNetworkV6)
{
remoteEP = new IPEndPoint(IPAddressExtensions.MapToIPv6(remoteEP.Address), remoteEP.Port);
}
}
BeginSend(socket, raw.Data, remoteEP);
}
private void EndReceive(UDPSocket socket, Byte[] buffer, Int32 offset, Int32 count, System.Net.EndPoint ep)
{
#if LOG_UDP_CHANNEL
_Log.Debug(m => m("EndReceive: length={0}", count));
#endif
if (count > 0)
{
Byte[] bytes = new Byte[count];
Buffer.BlockCopy(buffer, offset, bytes, 0, count);
if (ep.AddressFamily == AddressFamily.InterNetworkV6)
{
IPEndPoint ipep = (IPEndPoint)ep;
if (IPAddressExtensions.IsIPv4MappedToIPv6(ipep.Address))
{
ep = new IPEndPoint(IPAddressExtensions.MapToIPv4(ipep.Address), ipep.Port);
}
}
FireDataReceived(bytes, ep);
}
#if LOG_UDP_CHANNEL
_Log.Debug("EndReceive: restart the read");
#endif
BeginReceive(socket);
}
public void TestMapBetweenIPv4AndIPv6()
{
for (Byte i = 0; i < Byte.MaxValue; i++)
{
IPAddress ipv4 = new IPAddress(new Byte[] { 10, 0, 0, i });
IPAddress ipv6 = IPAddressExtensions.MapToIPv6(ipv4);
Assert.IsTrue(IPAddressExtensions.IsIPv4MappedToIPv6(ipv6));
IPAddress ipv4Mapped = IPAddressExtensions.MapToIPv4(ipv6);
Assert.AreEqual(ipv4, ipv4Mapped);
}
}
public void TestNoMapping()
{
IPAddress ipv4 = new IPAddress(new byte[] { 10, 0, 0, 5 });
IPAddress ipv4X = IPAddressExtensions.MapToIPv4(ipv4);
Assert.AreEqual(ipv4, ipv4X);
IPAddress ipv6 = IPAddress.Parse("[2001:0db8:ac10:fe01::]");
IPAddress ipv6X = IPAddressExtensions.MapToIPv6(ipv6);
Assert.AreEqual(ipv6, ipv6X);
}
private void EndReceiveMessage(UDPSocket socket, byte[] buffer, int offset, int count, System.Net.EndPoint ep, IPAddress ipLocal)
{
#if LOG_UDP_CHANNEL
_Log.Debug(m => m("EndReceive: length={0}", count));
#endif
if (count > 0)
{
byte[] bytes = new byte[count];
Buffer.BlockCopy(buffer, offset, bytes, 0, count);
if (ep.AddressFamily == AddressFamily.InterNetworkV6)
{
IPEndPoint ipep = (IPEndPoint)ep;
if (IPAddressExtensions.IsIPv4MappedToIPv6(ipep.Address))
{
ep = new IPEndPoint(IPAddressExtensions.MapToIPv4(ipep.Address), ipep.Port);
}
}
IPEndPoint epLocal;
epLocal = (IPEndPoint)socket.Socket.LocalEndPoint;
if (ipLocal != null)
{
epLocal = new IPEndPoint(ipLocal, epLocal.Port);
}
if (epLocal.AddressFamily == AddressFamily.InterNetworkV6)
{
if (IPAddressExtensions.IsIPv4MappedToIPv6(epLocal.Address))
{
epLocal = new IPEndPoint(IPAddressExtensions.MapToIPv4(epLocal.Address), epLocal.Port);
}
}
if (!socket.MulticastOnly || IPAddressExtensions.IsMulticastAddress(epLocal.Address))
{
FireDataReceived(bytes, ep, epLocal);
}
}
#if LOG_UDP_CHANNEL
_Log.Debug("EndReceive: restart the read");
#endif
BeginReceive(socket);
}
public void NotIPv4Address()
{
IPAddress ipv6 = IPAddress.Parse("[2001:0db8:ac10:fe01::]");
Assert.IsFalse((IPAddressExtensions.IsIPv4MappedToIPv6(ipv6)));
}
