Remove dead code from System.Net.Security (#24816)

* Deleted dead code from System.Net.Security.

* Returned back strings used in other platforms.

* Returned back strings used in OSX platform.

* Returned back event_ strings.

3 files changed, 63 insertions, 42 deletions

diff --git a/src/System.Net.Security/src/Resources/Strings.resx b/src/System.Net.Security/src/Resources/Strings.resx
index 6fafaafd89..8b2b4266da 100644
--- a/src/System.Net.Security/src/Resources/Strings.resx
+++ b/src/System.Net.Security/src/Resources/Strings.resx
@@ -1,5 +1,64 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
   <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
     <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
     <xsd:element name="root" msdata:IsDataSet="true">
@@ -70,9 +129,6 @@
   <data name="net_MethodNotImplementedException" xml:space="preserve">
     <value>This method is not implemented by this class.</value>
   </data>
-  <data name="net_completed_result" xml:space="preserve">
-    <value>This operation cannot be performed on a completed asynchronous result object.</value>
-  </data>
   <data name="net_io_readfailure" xml:space="preserve">
     <value>Unable to read data from the transport connection: {0}.</value>
   </data>
@@ -295,9 +351,6 @@
   <data name="net_ssl_encrypt_failed" xml:space="preserve">
     <value>Encrypt failed with OpenSSL error - {0}.</value>
   </data>
-  <data name="net_get_ssl_method_failed" xml:space="preserve">
-    <value>Failed to get SSL method '{0}'. Ensure the OpenSSL method exists on the current system.</value>
-  </data>
   <data name="net_ssl_check_private_key_failed" xml:space="preserve">
     <value>SSL certificate private key check failed with OpenSSL error - {0}.</value>
   </data>
@@ -355,7 +408,7 @@
   <data name="net_nego_not_supported_empty_target_with_defaultcreds" xml:space="preserve">
     <value>Target name should be non empty if default credentials are passed.</value>
   </data>
-  <data name="net_security_sslprotocol_contiguous">
+  <data name="net_security_sslprotocol_contiguous" xml:space="preserve">
     <value>The requested combination of SslProtocols ({0}) is not valid for this platform because it skips intermediate versions.</value>
   </data>
   <data name="net_encryptionpolicy_notsupported" xml:space="preserve">
@@ -373,4 +426,4 @@
   <data name="net_conflicting_options" xml:space="preserve">
     <value>The '{0}' option was already set in the SslStream constructor.</value>
   </data>
-</root>
+</root>
\ No newline at end of file
diff --git a/src/System.Net.Security/src/System/Net/Security/SecureChannel.cs b/src/System.Net.Security/src/System/Net/Security/SecureChannel.cs
index f3a8d0ac05..5c85adbf22 100644
--- a/src/System.Net.Security/src/System/Net/Security/SecureChannel.cs
+++ b/src/System.Net.Security/src/System/Net/Security/SecureChannel.cs
@@ -15,7 +15,7 @@ using System.Security.Cryptography.X509Certificates;
 
 namespace System.Net.Security
 {
-    // SecureChannel - a wrapper on SSPI based functionality. 
+    // SecureChannel - a wrapper on SSPI based functionality.
     // Provides an additional abstraction layer over SSPI for SslStream.
     internal class SecureChannel
     {
@@ -122,14 +122,6 @@ namespace System.Net.Security
             }
         }
 
-        internal int HeaderSize
-        {
-            get
-            {
-                return _headerSize;
-            }
-        }
-
         internal int MaxDataSize
         {
             get
@@ -938,7 +930,7 @@ namespace System.Net.Security
             }
 
             byte[] writeBuffer = output;
-                        
+
             SecurityStatusPal secStatus = SslStreamPal.EncryptMessage(
                 _securityContext,
                 buffer,
diff --git a/src/System.Net.Security/src/System/Net/Security/SslState.cs b/src/System.Net.Security/src/System/Net/Security/SslState.cs
index 3fd95ad1b9..2ef9b71add 100644
--- a/src/System.Net.Security/src/System/Net/Security/SslState.cs
+++ b/src/System.Net.Security/src/System/Net/Security/SslState.cs
@@ -32,7 +32,6 @@ namespace System.Net.Security
         private SecureChannel _context;
 
         private bool _handshakeCompleted;
-        private bool _certValidationFailed;
         private bool _shutdown;
 
         private SecurityStatusPal _securityStatus;
@@ -230,19 +229,6 @@ namespace System.Net.Security
             }
         }
 
-        internal SecurityStatusPal LastSecurityStatus
-        {
-            get { return _securityStatus; }
-        }
-
-        internal bool IsCertValidationFailed
-        {
-            get
-            {
-                return _certValidationFailed;
-            }
-        }
-
         internal bool IsShutdown
         {
             get
@@ -407,14 +393,6 @@ namespace System.Net.Security
             }
         }
 
-        internal int HeaderSize
-        {
-            get
-            {
-                return Context.HeaderSize;
-            }
-        }
-
         internal int MaxDataSize
         {
             get
@@ -1041,14 +1019,12 @@ namespace System.Net.Security
             if (!Context.VerifyRemoteCertificate(_sslAuthenticationOptions.CertValidationDelegate, ref alertToken))
             {
                 _handshakeCompleted = false;
-                _certValidationFailed = true;
 
                 if (NetEventSource.IsEnabled)
                     NetEventSource.Exit(this, false);
                 return false;
             }
 
-            _certValidationFailed = false;
             _handshakeCompleted = true;
 
             if (NetEventSource.IsEnabled)