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-#region Copyright notice and license
-
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc. All rights reserved.
-// http://github.com/jskeet/dotnet-protobufs/
-// Original C++/Java/Python code:
-// http://code.google.com/p/protobuf/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#endregion
-
-using System;
-
-namespace Google.ProtocolBuffers
-{
- /// <summary>
- /// Mediates a single method call. The primary purpose of the controller
- /// is to provide a way to manipulate settings specific to the
- /// RPC implementation and to find out about RPC-level errors.
- ///
- /// The methods provided by this interface are intended to be a "least
- /// common denominator" set of features which we expect all implementations to
- /// support. Specific implementations may provide more advanced features,
- /// (e.g. deadline propagation).
- /// </summary>
- public interface IRpcController
- {
- #region Client side calls
-
- // These calls may be made from the client side only. Their results
- // are undefined on the server side (may throw exceptions).
-
- /// <summary>
- /// Resets the controller to its initial state so that it may be reused in
- /// a new call. This can be called from the client side only. It must not
- /// be called while an RPC is in progress.
- /// </summary>
- void Reset();
-
- /// <summary>
- /// After a call has finished, returns true if the call failed. The possible
- /// reasons for failure depend on the RPC implementation. Failed must
- /// only be called on the client side, and must not be called before a call has
- /// finished.
- /// </summary>
- bool Failed { get; }
-
- /// <summary>
- /// If Failed is true, ErrorText returns a human-readable description of the error.
- /// </summary>
- string ErrorText { get; }
-
- /// <summary>
- /// Advises the RPC system that the caller desires that the RPC call be
- /// canceled. The RPC system may cancel it immediately, may wait awhile and
- /// then cancel it, or may not even cancel the call at all. If the call is
- /// canceled, the "done" callback will still be called and the RpcController
- /// will indicate that the call failed at that time.
- /// </summary>
- void StartCancel();
-
- #endregion
-
- #region Server side calls
-
- // These calls may be made from the server side only. Their results
- // are undefined on the client side (may throw exceptions).
-
- /// <summary>
- /// Causes Failed to return true on the client side. <paramref name="reason"/>
- /// will be incorporated into the message returned by ErrorText.
- /// If you find you need to return machine-readable information about
- /// failures, you should incorporate it into your response protocol buffer
- /// and should *not* call SetFailed.
- /// </summary>
- void SetFailed(string reason);
-
- /// <summary>
- /// If true, indicates that the client canceled the RPC, so the server may as
- /// well give up on replying to it. This method must be called on the server
- /// side only. The server should still call the final "done" callback.
- /// </summary>
- bool IsCanceled();
-
- /// <summary>
- /// Requests that the given callback be called when the RPC is canceled.
- /// The parameter passed to the callback will always be null. The callback will
- /// be called exactly once. If the RPC completes without being canceled, the
- /// callback will be called after completion. If the RPC has already been canceled
- /// when NotifyOnCancel is called, the callback will be called immediately.
- ///
- /// NotifyOnCancel must be called no more than once per request. It must be
- /// called on the server side only.
- /// </summary>
- /// <param name="callback"></param>
- void NotifyOnCancel(Action<object> callback);
-
- #endregion
- }
-} \ No newline at end of file