A little cleaner, and we can complete negotiation.

NativeMethods.cs

@@ -129,93 +129,5 @@ namespace NSspi
             public IntPtr Name;
         }
 
-
-
-        // When used in the ClientContext:
-        /*
-			SECURITY_STATUS sResult = InitializeSecurityContext(
-				phCredential,										// [in] handle to the credentials
-				NULL,												// [in/out] handle of partially formed context. Always NULL the first time through
-				pwszServerPrincipalName,							// [in] name of the target of the context. Not needed by NTLM
-				reqContextAttributes,								// [in] required context attributes
-				0,													// [reserved] reserved; must be zero
-				SECURITY_NATIVE_DREP,								// [in] data representation on the target
-				NULL,												// [in/out] pointer to the input buffers.  Always NULL the first time through
-				0,													// [reserved] reserved; must be zero
-				this->contextHandle,								// [in/out] receives the new context handle (must be pre-allocated)
-				&outBuffDesc,										// [out] pointer to the output buffers
-				pulContextAttributes,								// [out] receives the context attributes
-				&tsLifeSpan											// [out] receives the life span of the security context
-			);
-        */
-        /*
-        SECURITY_STATUS SEC_Entry InitializeSecurityContext(
-          _In_opt_     PCredHandle phCredential,
-          _In_opt_     PCtxtHandle phContext,
-          _In_opt_     SEC_CHAR *pszTargetName,
-          _In_         ULONG fContextReq,
-          _In_         ULONG Reserved1,
-          _In_         ULONG TargetDataRep,
-          _In_opt_     PSecBufferDesc pInput,
-          _In_         ULONG Reserved2,
-          _Inout_opt_  PCtxtHandle phNewContext,
-          _Inout_opt_  PSecBufferDesc pOutput,
-          _Out_        PULONG pfContextAttr,
-          _Out_opt_    PTimeStamp ptsExpiry
-        );
-        */
-
-        [DllImport(
-            "Secur32.dll",
-            EntryPoint = "InitializeSecurityContext",
-            CallingConvention = CallingConvention.Winapi,
-            CharSet = CharSet.Unicode,
-            SetLastError = true
-        )]
-        public static extern SecurityStatus InitializeSecurityContext_1(
-            ref long credentialHandle,
-            IntPtr zero, 
-            string serverPrincipleName,
-            ContextAttrib requiredAttribs,
-            int reserved1,
-            SecureBufferDataRep dataRep,
-            IntPtr inputBuffer,
-            int reserved2, 
-            ref long newContextHandle,
-            IntPtr outputBuffer,
-            ref ContextAttrib contextAttribs,
-            ref long expiry
-        );
-
-        [DllImport(
-            "Secur32.dll",
-            EntryPoint = "InitializeSecurityContext",
-            CallingConvention = CallingConvention.Winapi,
-            CharSet = CharSet.Unicode,
-            SetLastError = true
-        )]
-        public static extern SecurityStatus InitializeSecurityContext_2(
-            ref long credentialHandle,
-            ref long previousHandle,
-            string serverPrincipleName,
-            ContextAttrib requiredAttribs,
-            int reserved1,
-            SecureBufferDataRep dataRep,
-            IntPtr inputBuffer,
-            int reserved2,
-            ref long newContextHandle,
-            IntPtr outputBuffer,
-            ref ContextAttrib contextAttribs,
-            ref long expiry
-        );
-
-        [DllImport(
-            "Secur32.dll",
-            EntryPoint = "DeleteSecurityContext",
-            CallingConvention = CallingConvention.Winapi,
-            CharSet = CharSet.Unicode,
-            SetLastError = true
-        )]
-        public static extern SecurityStatus DeleteSecurityContext( ref long contextHandle );
     }
 }