* Implements automatic loopback handling for standalone regions.

* This /should/ make OpenSim behave properly when hosting behind a NAT router and utilizing port forwarding (but the router doesn't support Loopback)

OpenSim/Client/Linden/LLStandaloneLoginService.cs

@@ -163,11 +163,17 @@ namespace OpenSim.Client.Linden
 
             if (m_serversInfo.HttpUsesSSL)
             {
-                seedcap = "https://" + m_serversInfo.HttpSSLCN + ":" + m_serversInfo.httpSSLPort + capsSeedPath;
+                // For NAT
+                string host = NetworkUtil.GetHostFor(remoteClient.Address, m_serversInfo.HttpSSLCN);
+
+                seedcap = "https://" + host + ":" + m_serversInfo.httpSSLPort + capsSeedPath;
             }
             else
             {
-                seedcap = "http://" + regionInfo.ExternalHostName + ":" + m_serversInfo.HttpListenerPort + capsSeedPath;
+                // For NAT
+                string host = NetworkUtil.GetHostFor(remoteClient.Address, regionInfo.ExternalHostName);
+
+                seedcap = "http://" + host + ":" + m_serversInfo.HttpListenerPort + capsSeedPath;
             }
 
             response.SeedCapability = seedcap;

OpenSim/Framework/Communications/Services/HGLoginAuthService.cs

@@ -279,11 +279,17 @@ namespace OpenSim.Framework.Communications.Services
 
             if (m_serversInfo.HttpUsesSSL)
             {
-                seedcap = "https://" + m_serversInfo.HttpSSLCN + ":" + regionInfo.HttpPort + capsSeedPath;
+                // For NAT
+                string host = NetworkUtil.GetHostFor(remoteClient.Address, m_serversInfo.HttpSSLCN);
+
+                seedcap = "https://" + host + ":" + m_serversInfo.httpSSLPort + capsSeedPath;
             }
             else
             {
-                seedcap = "http://" + regionInfo.ExternalHostName + ":" + regionInfo.HttpPort + capsSeedPath;
+                // For NAT
+                string host = NetworkUtil.GetHostFor(remoteClient.Address, regionInfo.ExternalHostName);
+
+                seedcap = "http://" + host + ":" + m_serversInfo.HttpListenerPort + capsSeedPath;
             }
 
             response.SeedCapability = seedcap;

OpenSim/Grid/UserServer.Modules/UserLoginService.cs

@@ -270,10 +270,12 @@ namespace OpenSim.Grid.UserServer.Modules
 
                 string capsPath = CapsUtil.GetRandomCapsObjectPath();
 
-                // Take off trailing / so that the caps path isn't //CAPS/someUUID
+                // For NAT
-                if (regionInfo.httpServerURI.EndsWith("/"))
+                string host = NetworkUtil.GetHostFor(remoteClient.Address, regionInfo.ServerIP);
-                    regionInfo.httpServerURI = regionInfo.httpServerURI.Substring(0, regionInfo.httpServerURI.Length - 1);
+                // TODO: This doesnt support SSL. -Adam
-                response.SeedCapability = regionInfo.httpServerURI + CapsUtil.GetCapsSeedPath(capsPath);
+                string serverURI = "http://" + host + ":" + regionInfo.ServerPort;
+
+                response.SeedCapability = serverURI + CapsUtil.GetCapsSeedPath(capsPath);
 
                 // Notify the target of an incoming user
                 m_log.InfoFormat(

OpenSim/Region/Framework/Scenes/SceneCommunicationService.cs

@@ -811,6 +811,19 @@ namespace OpenSim.Region.Framework.Scenes
                         avatar.CloseChildAgents(newRegionX, newRegionY);
 
                         if (Util.IsOutsideView(oldRegionX, newRegionX, oldRegionY, newRegionY))
+                        {
+                            #region IP Translation for NAT
+                            IClientIPEndpoint ipepClient;
+                            if (avatar.ClientView.TryGet(out ipepClient))
+                            {
+                                capsPath
+                                    = "http://"
+                                      + NetworkUtil.GetHostFor(ipepClient.EndPoint, reg.ExternalHostName)
+                                      + ":"
+                                      + reg.HttpPort
+                                      + CapsUtil.GetCapsSeedPath(agentCircuit.CapsPath);
+                            }
+                            else
                             {
                                 capsPath
                                     = "http://"
@@ -818,11 +831,13 @@ namespace OpenSim.Region.Framework.Scenes
                                       + ":"
                                       + reg.HttpPort
                                       + CapsUtil.GetCapsSeedPath(agentCircuit.CapsPath);
+                            }
+                            #endregion
 
                             if (eq != null)
                             {
                                 #region IP Translation for NAT
-                                IClientIPEndpoint ipepClient;
+                                // Uses ipepClient above
                                 if (avatar.ClientView.TryGet(out ipepClient))
                                 {
                                     endPoint.Address = NetworkUtil.GetIPFor(ipepClient.EndPoint, endPoint.Address);