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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.
// http://code.google.com/p/protobuf/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
using System;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers {
/// <summary>
/// Interface for an RPC channel. A channel represents a communication line to
/// a service (IService implementation) which can be used to call that service's
/// methods. The service may be running on another machine. Normally, you should
/// not call an IRpcChannel directly, but instead construct a stub wrapping it.
/// Generated service classes contain a CreateStub method for precisely this purpose.
/// </summary>
public interface IRpcChannel {
/// <summary>
/// Calls the given method of the remote service. This method is similar
/// to <see cref="IService.CallMethod" /> with one important difference: the
/// caller decides the types of the IMessage objects, not the implementation.
/// The request may be of any type as long as <c>request.Descriptor == method.InputType</c>.
/// The response passed to the callback will be of the same type as
/// <paramref name="responsePrototype"/> (which must be such that
/// <c>responsePrototype.Descriptor == method.OutputType</c>).
/// </summary>
void CallMethod(MethodDescriptor method, IRpcController controller,
IMessage request, IMessage responsePrototype, Action<IMessage> done);
}
}
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