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   /*
    * Copyright 2014 The Netty Project
    *
    * The Netty Project licenses this file to you 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:
    *
    *   https://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.
   */
  package io.netty.handler.ssl;
  
  import io.netty.internal.tcnative.SSL;
  import io.netty.internal.tcnative.SSLContext;
  
  import java.util.concurrent.locks.Lock;
  
  
  /**
   * {@link OpenSslSessionContext} implementation which offers extra methods which are only useful for the server-side.
   */
  public final class OpenSslServerSessionContext extends OpenSslSessionContext {
      OpenSslServerSessionContext(ReferenceCountedOpenSslContext context, OpenSslKeyMaterialProvider provider) {
          super(context, provider, SSL.SSL_SESS_CACHE_SERVER, new OpenSslSessionCache(context.engineMap));
      }
  
      /**
       * Set the context within which session be reused (server side only)
       * See <a href="https://www.openssl.org/docs/ssl/SSL_CTX_set_session_id_context.html">
       *     man SSL_CTX_set_session_id_context</a>
       *
       * @param sidCtx can be any kind of binary data, it is therefore possible to use e.g. the name
       *               of the application and/or the hostname and/or service name
       * @return {@code true} if success, {@code false} otherwise.
       */
      public boolean setSessionIdContext(byte[] sidCtx) {
          Lock writerLock = context.ctxLock.writeLock();
          writerLock.lock();
          try {
              return SSLContext.setSessionIdContext(context.ctx, sidCtx);
          } finally {
              writerLock.unlock();
          }
      }
  }