StreamSecurityUpgradeInitiatorBase.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Channels / StreamSecurityUpgradeInitiatorBase.cs / 1 / StreamSecurityUpgradeInitiatorBase.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Channels
{ 
    using System.IO;
    using System.ServiceModel; 
    using System.ServiceModel.Security; 

    abstract class StreamSecurityUpgradeInitiatorBase : StreamSecurityUpgradeInitiator 
    {
        EndpointAddress remoteAddress;
        Uri via;
        SecurityMessageProperty remoteSecurity; 
        bool securityUpgraded;
        string nextUpgrade; 
        bool isOpen; 

        protected StreamSecurityUpgradeInitiatorBase(string upgradeString, EndpointAddress remoteAddress, Uri via) 
        {
            this.remoteAddress = remoteAddress;
            this.via = via;
            this.nextUpgrade = upgradeString; 
        }
 
        protected EndpointAddress RemoteAddress 
        {
            get 
            {
                return this.remoteAddress;
            }
        } 

        protected Uri Via 
        { 
            get
            { 
                return this.via;
            }
        }
 
        public override IAsyncResult BeginInitiateUpgrade(Stream stream, AsyncCallback callback, object state)
        { 
            if (stream == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("stream"); 
            }

            if (!this.isOpen)
            { 
                this.Open(TimeSpan.Zero);
            } 
 
            return this.OnBeginInitiateUpgrade(stream, callback, state);
        } 

        public override Stream EndInitiateUpgrade(IAsyncResult result)
        {
            if (result == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("result"); 
            } 
            Stream retValue = this.OnEndInitiateUpgrade(result, out this.remoteSecurity);
            this.securityUpgraded = true; 
            return retValue;
        }

        public override string GetNextUpgrade() 
        {
            string result = this.nextUpgrade; 
            this.nextUpgrade = null; 
            return result;
        } 

        public override SecurityMessageProperty GetRemoteSecurity()
        {
            if (!securityUpgraded) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.OperationInvalidBeforeSecurityNegotiation))); 
            } 

            return this.remoteSecurity; 
        }

        public override Stream InitiateUpgrade(Stream stream)
        { 
            if (stream == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("stream"); 
            }
 
            if (!this.isOpen)
            {
                this.Open(TimeSpan.Zero);
            } 

            Stream result = this.OnInitiateUpgrade(stream, out this.remoteSecurity); 
            this.securityUpgraded = true; 
            return result;
        } 

        internal override void EndOpen(IAsyncResult result)
        {
            base.EndOpen(result); 
            this.isOpen = true;
        } 
 
        internal override void Open(TimeSpan timeout)
        { 
            base.Open(timeout);
            this.isOpen = true;
        }
 
        internal override void EndClose(IAsyncResult result)
        { 
            base.EndClose(result); 
            this.isOpen = false;
        } 

        internal override void Close(TimeSpan timeout)
        {
            base.Close(timeout); 
            this.isOpen = false;
        } 
 
        protected abstract IAsyncResult OnBeginInitiateUpgrade(Stream stream, AsyncCallback callback, object state);
        protected abstract Stream OnEndInitiateUpgrade(IAsyncResult result, 
            out SecurityMessageProperty remoteSecurity);
        protected abstract Stream OnInitiateUpgrade(Stream stream, out SecurityMessageProperty remoteSecurity);
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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StreamSecurityUpgradeInitiatorBase.cs source code in C# .NET

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