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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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