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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// 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.
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// in the documentation and/or other materials provided with the
// distribution.
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//
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package com.google.protobuf;

/**
 * <p>Abstract interface for a blocking RPC channel.  {@code BlockingRpcChannel}
 * is the blocking equivalent to {@link RpcChannel}.
 *
 * @author kenton@google.com Kenton Varda
 * @author cpovirk@google.com Chris Povirk
 */
public interface BlockingRpcChannel {
  /**
   * Call the given method of the remote service and blocks until it returns.
   * {@code callBlockingMethod()} is the blocking equivalent to
   * {@link RpcChannel#callMethod}.
   */
  Message callBlockingMethod(
      Descriptors.MethodDescriptor method,
      RpcController controller,
      Message request,
      Message responsePrototype) throws ServiceException;
}