1 files changed, 35 insertions, 0 deletions
diff --git a/src/server/shared/Realm/Realm.cpp b/src/server/shared/Realm/Realm.cpp
index 0c8f4d1d492..11c52f281a9 100644
--- a/src/server/shared/Realm/Realm.cpp
+++ b/src/server/shared/Realm/Realm.cpp
@@ -16,3 +16,38 @@
  */
 
 #include "Realm.h"
+
+ip::tcp::endpoint Realm::GetAddressForClient(ip::address const& clientAddr) const
+{
+    ip::address realmIp;
+
+    // Attempt to send best address for client
+    if (clientAddr.is_loopback())
+    {
+        // Try guessing if realm is also connected locally
+        if (LocalAddress.is_loopback() || ExternalAddress.is_loopback())
+            realmIp = clientAddr;
+        else
+        {
+            // Assume that user connecting from the machine that bnetserver is located on
+            // has all realms available in his local network
+            realmIp = LocalAddress;
+        }
+    }
+    else
+    {
+        if (clientAddr.is_v4() &&
+            (clientAddr.to_v4().to_ulong() & LocalSubnetMask.to_v4().to_ulong()) ==
+            (LocalAddress.to_v4().to_ulong() & LocalSubnetMask.to_v4().to_ulong()))
+        {
+            realmIp = LocalAddress;
+        }
+        else
+            realmIp = ExternalAddress;
+    }
+
+    ip::tcp::endpoint endpoint(realmIp, Port);
+
+    // Return external IP
+    return endpoint;
+}