56 lines
2.4 KiB
C#
56 lines
2.4 KiB
C#
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//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.ServiceModel.Dispatcher
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{
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using System.Runtime;
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using System.ServiceModel;
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using System.ServiceModel.Channels;
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class PerSessionInstanceContextProvider : InstanceContextProviderBase
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{
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internal PerSessionInstanceContextProvider(DispatchRuntime dispatchRuntime)
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: base(dispatchRuntime)
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{
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}
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public override InstanceContext GetExistingInstanceContext(Message message, IContextChannel channel)
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{
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// Here is the flow for a Sessionful channel
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// 1. First request comes in on new channel.
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// 2. ServiceChannel.InstanceContext is returned which is null.
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// 3. InstanceBehavior.EnsureInstanceContext will create a new InstanceContext.
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// 4. this.InitializeInstanceContext is called with the newly created InstanceContext and the channel.
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// 5. If the channel is sessionful then its bound to the InstanceContext.
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// 6. Bind channel to the InstanceContext.
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// 7. For all further requests on the same channel, we will return ServiceChannel.InstanceContext which will be non null.
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ServiceChannel serviceChannel = this.GetServiceChannelFromProxy(channel);
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Fx.Assert((serviceChannel != null), "System.ServiceModel.Dispatcher.PerSessionInstanceContextProvider.GetExistingInstanceContext(), serviceChannel != null");
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return (serviceChannel != null) ? serviceChannel.InstanceContext : null;
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}
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public override void InitializeInstanceContext(InstanceContext instanceContext, Message message, IContextChannel channel)
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{
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ServiceChannel serviceChannel = GetServiceChannelFromProxy(channel);
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if (serviceChannel != null && serviceChannel.HasSession)
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{
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instanceContext.BindIncomingChannel(serviceChannel);
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}
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}
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public override bool IsIdle(InstanceContext instanceContext)
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{
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//By default return true
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return true;
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}
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public override void NotifyIdle(InstanceContextIdleCallback callback, InstanceContext instanceContext)
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{
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//no-op
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}
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}
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}
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