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path: root/csharp/src/Ice/DispatchInterceptor.cs
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// **********************************************************************
//
// Copyright (c) 2003-2017 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************

namespace Ice
{
    /// <summary>
    /// Base class that allows a server intercept incoming requests.
    /// The application must derive a concrete class from DispatchInterceptor
    /// that implements the DispatchInterceptor.dispatch operation. An instance of this derived
    /// class can be registered with an object adapter like any other servant.
    /// A dispatch interceptor is useful particularly to automatically retry requests
    /// that have failed due to a recoverable error condition.
    /// </summary>
    public abstract class DispatchInterceptor : ObjectImpl
    {
        /// <summary>
        /// Called by the Ice run time to dispatch an incoming request. The implementation
        /// of <code>dispatch</code> must dispatch the request to the actual servant.
        /// </summary>
        /// <param name="request">The details of the incoming request.</param>
        /// <returns>The task if dispatched asynchronously, null otherwise.</returns>
        public abstract System.Threading.Tasks.Task<OutputStream>
        dispatch(Request request);

        public override System.Threading.Tasks.Task<OutputStream>
        iceDispatch(IceInternal.Incoming inc, Current current)
        {
            return dispatch(inc);
        }
    }
}