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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.hc.core5.reactor;
29  
30  import org.apache.hc.core5.concurrent.FutureCallback;
31  import org.apache.hc.core5.net.NamedEndpoint;
32  import org.apache.hc.core5.reactor.ssl.TransportSecurityLayer;
33  
34  /**
35   * TLS capable, protocol upgradable {@link IOSession}.
36   *
37   * @since 5.0
38   */
39  public interface ProtocolIOSession extends IOSession, TransportSecurityLayer {
40  
41      /**
42       * Switches this I/O session to the application protocol with the given ID.
43       * @param protocolId the application protocol ID
44       * @param callback the result callback
45       * @throws UnsupportedOperationException if application protocol switch
46       * is not supported.
47       */
48      default void switchProtocol(String protocolId, FutureCallback<ProtocolIOSession> callback) throws UnsupportedOperationException {
49          throw new UnsupportedOperationException("Protocol switch not supported");
50      }
51  
52      /**
53       * Registers protocol upgrade handler with the given application protocol ID.
54       *
55       * @since 5.2
56       * @param protocolId the application protocol ID
57       * @param upgradeHandler the upgrade handler.
58       *
59       * @since 5.2
60       */
61      default void registerProtocol(String protocolId, ProtocolUpgradeHandler upgradeHandler) {
62      }
63  
64      NamedEndpoint getInitialEndpoint();
65  
66  }