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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System;
using System.Net;
using System.Runtime;
using System.ServiceModel;
using System.ServiceModel.Diagnostics;
class ServiceContextProtocol : ContextProtocol
{
public ServiceContextProtocol(ContextExchangeMechanism contextExchangeMechanism)
: base(contextExchangeMechanism)
{
// empty
}
public override void OnIncomingMessage(Message message)
{
if (message == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("message");
}
if (this.ContextExchangeMechanism == ContextExchangeMechanism.HttpCookie)
{
this.OnReceiveHttpCookies(message);
}
else
{
this.OnReceiveSoapContextHeader(message);
}
// deserialize the callback context header, if present
int headerIndex = message.Headers.FindHeader(CallbackContextMessageHeader.CallbackContextHeaderName, CallbackContextMessageHeader.CallbackContextHeaderNamespace);
if (headerIndex > 0)
{
CallbackContextMessageProperty property = CallbackContextMessageHeader.ParseCallbackContextHeader(message.Headers.GetReaderAtHeader(headerIndex), message.Version.Addressing);
message.Properties.Add(CallbackContextMessageProperty.Name, property);
}
ContextExchangeCorrelationHelper.AddIncomingContextCorrelationData(message);
}
public override void OnOutgoingMessage(Message message, RequestContext requestContext)
{
if (message == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("message");
}
ContextMessageProperty messageContext;
if (ContextMessageProperty.TryGet(message, out messageContext))
{
if (this.ContextExchangeMechanism == ContextExchangeMechanism.HttpCookie)
{
Fx.Assert(requestContext != null, "DuplexChannel shape cannot have ContextExchangeMechanism = HttpCookie");
Uri requestUri = null;
if (requestContext.RequestMessage.Properties != null)
{
requestUri = requestContext.RequestMessage.Properties.Via;
}
if (requestUri == null)
{
requestUri = requestContext.RequestMessage.Headers.To;
}
this.OnSendHttpCookies(message, messageContext, requestUri);
}
else
{
this.OnSendSoapContextHeader(message, messageContext);
}
}
// verify that the callback context was not attached to an outgoing message
CallbackContextMessageProperty dummy;
if (CallbackContextMessageProperty.TryGet(message, out dummy))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperWarning(new InvalidOperationException(SR.GetString(SR.CallbackContextNotExpectedOnOutgoingMessageAtServer, message.Headers.Action)));
}
}
void OnReceiveHttpCookies(Message message)
{
object property;
if (message.Properties.TryGetValue(HttpRequestMessageProperty.Name, out property))
{
HttpRequestMessageProperty httpRequest = property as HttpRequestMessageProperty;
if (httpRequest != null)
{
string cookieHeader = httpRequest.Headers[HttpRequestHeader.Cookie];
ContextMessageProperty messageContext;
if (!string.IsNullOrEmpty(cookieHeader) && HttpCookieToolbox.TryCreateFromHttpCookieHeader(cookieHeader, out messageContext))
{
messageContext.AddOrReplaceInMessage(message);
}
}
}
}
void OnReceiveSoapContextHeader(Message message)
{
ContextMessageProperty messageContext = ContextMessageHeader.GetContextFromHeaderIfExists(message);
if (messageContext != null)
{
messageContext.AddOrReplaceInMessage(message);
if (DiagnosticUtility.ShouldTraceVerbose)
{
TraceUtility.TraceEvent(System.Diagnostics.TraceEventType.Verbose,
TraceCode.ContextProtocolContextRetrievedFromMessage,
SR.GetString(SR.TraceCodeContextProtocolContextRetrievedFromMessage),
this);
}
}
}
void OnSendHttpCookies(Message message, ContextMessageProperty context, Uri requestUri)
{
object tmpProperty;
HttpResponseMessageProperty property = null;
if (message.Properties.TryGetValue(HttpResponseMessageProperty.Name, out tmpProperty))
{
property = tmpProperty as HttpResponseMessageProperty;
}
if (property == null)
{
property = new HttpResponseMessageProperty();
message.Properties.Add(HttpResponseMessageProperty.Name, property);
}
string setCookieHeader = HttpCookieToolbox.EncodeContextAsHttpSetCookieHeader(context, requestUri);
property.Headers.Add(HttpResponseHeader.SetCookie, setCookieHeader);
}
}
}
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