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* Breaks OpenSim.. err I mean.. adds NAT translation support to EnableSimulator EventQueue methods.

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* NB: This may actually break logins on certain regions. Shake well before consuming.
This commit is contained in:
Adam Frisby
2009-05-23 05:44:18 +00:00
parent f8c569dc7c
commit 3b1b3ac9bb
3 changed files with 65 additions and 1 deletions
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40
OpenSim/Framework/NetworkUtil.cs
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@@ -14,11 +14,49 @@ namespace OpenSim.Framework
/// This enables standard port forwarding techniques
/// to work correctly with OpenSim.
/// </summary>
static class NetworkUtil
public static class NetworkUtil
{
// IPv4Address, Subnet
static readonly Dictionary<IPAddress,IPAddress> m_subnets = new Dictionary<IPAddress, IPAddress>();
public static IPAddress GetIPFor(IPAddress user, IPAddress simulator)
{
// Check if we're accessing localhost.
foreach (IPAddress host in Dns.GetHostAddresses(Dns.GetHostName()))
{
if (host.Equals(user) && host.AddressFamily == AddressFamily.InterNetwork)
return host;
}
// Check for same LAN segment
foreach (KeyValuePair<IPAddress, IPAddress> subnet in m_subnets)
{
byte[] subnetBytes = subnet.Value.GetAddressBytes();
byte[] localBytes = subnet.Key.GetAddressBytes();
byte[] destBytes = user.GetAddressBytes();
if (subnetBytes.Length != destBytes.Length || subnetBytes.Length != localBytes.Length)
return null;
bool valid = true;
for (int i = 0; i < subnetBytes.Length; i++)
{
if ((localBytes[i] & subnetBytes[i]) != (destBytes[i] & subnetBytes[i]))
{
valid = false;
break;
}
}
if (valid)
return subnet.Key;
}
// Otherwise, return outside address
return simulator;
}
private static IPAddress GetExternalIPFor(IPAddress destination, string defaultHostname)
{
// Adds IPv6 Support (Not that any of the major protocols supports it...)