Method cancel

core/src/main/java/io/grpc/internal/ClientStream.java:41–41

Abnormally terminates 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 ClientStreamListener#closed is called. This method may only be called after #start, but el

(Status reason)

   * @param reason must be non-OK
   */
  void cancel(Status reason);

  /**
   * Closes the local side of this stream and flushes any remaining messages. After this is called,