/// <summary>
/// Creates the <see cref="NullClientChannelSink"/>.
/// </summary>
/// <param name="channel"><see cref="NullChannel"/> instance.</param>
/// <param name="url">Object url.</param>
/// <param name="remoteChannelData">Channel-specific data for the remote channel.</param>
/// <returns><see cref="NullClientChannelSink"/> for the given url.</returns>
public IClientChannelSink CreateSink(IChannelSender channel, string url, object remoteChannelData)
{
string objectUrl;
string channelName = NullChannel.ParseUrl(url, out objectUrl);
return(new NullClientChannelSink(channelName));
}
private void ProcessMessage(object waitCallbackState)
{
var requestMessage = (NullMessages.RequestMessage)waitCallbackState;
// replace full url with object url
var url = requestMessage.RequestHeaders[CommonTransportKeys.RequestUri].ToString();
string objectUri;
NullChannel.ParseUrl(url, out objectUri);
objectUri = objectUri ?? url;
requestMessage.RequestHeaders[CommonTransportKeys.RequestUri] = objectUri;
requestMessage.Message.Properties["__Uri"] = objectUri;
// add client address property for compatibility
var callContext = requestMessage.Message.Properties["__CallContext"] as LogicalCallContext;
callContext.SetData(ClientAddressSink.CallContextSlotName, IPAddress.Loopback);
IMessage responseMsg;
ITransportHeaders responseHeaders;
Stream responseStream;
// create sink stack to process request message
var stack = new ServerChannelSinkStack();
stack.Push(this, null);
// process request message
ServerProcessing serverProcessing;
if (NextChannelSink != null)
{
// full processing mode, with deserialization
serverProcessing = NextChannelSink.ProcessMessage(stack, null,
requestMessage.RequestHeaders, requestMessage.RequestStream,
out responseMsg, out responseHeaders, out responseStream);
}
else
{
// fast processing mode, bypassing deserialization
serverProcessing = ChannelServices.DispatchMessage(stack, requestMessage.Message, out responseMsg);
responseHeaders = null;
responseStream = null;
}
// send back the reply
switch (serverProcessing)
{
case ServerProcessing.Complete:
stack.Pop(this);
NullMessages.AddResponse(requestMessage, new NullMessages.ResponseMessage
{
Message = responseMsg,
ResponseHeaders = responseHeaders,
ResponseStream = responseStream
});
break;
case ServerProcessing.Async:
stack.StoreAndDispatch(NextChannelSink, null);
break;
case ServerProcessing.OneWay:
stack.Pop(this);
break;
}
}
