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 * 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
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 * in the documentation and/or other materials provided with the
 * distribution.
 *
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 * 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
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package com.google.net.stubby.transport;

/**
 * Extension of {@link Stream} to support client-side termination semantics.
 */
public interface ClientStream extends Stream {

  /**
   * Used to abnormally terminate the stream. After calling this method, no further messages will be
   * sent or received, however it may still be possible to receive buffered messages for a brief
   * period until {@link ClientStreamListener#closed} is called.
   */
  void cancel();

  /**
   * Closes the local side of this stream and flushes any remaining messages. After this is called,
   * no further messages may be sent on this stream, but additional messages may be received until
   * the remote end-point is closed.
   */
  void halfClose();
}