revert

Author: twsouthwick

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SNI/SNIProxy.cs

@@ -36,7 +36,7 @@ internal class SNIProxy
         /// <param name="sendWriter">Writer for send buffer</param>
         /// <param name="serverNames">Service Principal Name</param>
         /// <returns>SNI error code</returns>
-        internal static void GenSspiClientContext(SspiClientContextStatus sspiClientContextStatus, ReadOnlyMemory<byte> receivedBuff, IBufferWriter<byte> sendWriter, string serverNames)
+        internal static void GenSspiClientContext(SspiClientContextStatus sspiClientContextStatus, ReadOnlyMemory<byte> receivedBuff, IBufferWriter<byte> sendWriter, string[] serverNames)
         {
             // TODO: this should use ReadOnlyMemory all the way through
             byte[] array = null;

src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlClient/SSPI/SSPIContextProvider.cs

@@ -15,16 +15,14 @@ internal abstract class SSPIContextProvider
         private SqlAuthenticationParameters? _parameters;
         private protected string[] _serverNames = Array.Empty<string>();
 
-        internal void Initialize(ServerInfo serverInfo, TdsParserStateObject physicalStateObj, TdsParser parser, string serverName)
-            => Initialize(serverInfo, physicalStateObj, parser, new[] { serverName });
-
-        internal void Initialize(ServerInfo serverInfo, TdsParserStateObject physicalStateObj, TdsParser parser, string[] serverNames)
+        internal void Initialize(ServerInfo serverInfo, TdsParserStateObject physicalStateObj, TdsParser parser, params string[] serverNames)
         {
             Debug.Assert(serverNames.Length > 0);
 
             _parser = parser;
             _physicalStateObj = physicalStateObj;
             _serverInfo = serverInfo;
+            _serverNames = serverNames;
 
             _parameters = InitializeAuthenticationParameters(parser.Connection, serverNames[0]);