_ Git - BoarSSL/blob - SSLTLS/ISessionCache.cs

   1 /*
   2  * Copyright (c) 2017 Thomas Pornin <pornin@bolet.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sublicense, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25 using System;
  26 using System.IO;
  27
  28 namespace SSLTLS {
  29
  30 /*
  31  * A session cache instance is able to cache and remember session
  32  * parameters; this is typically used on a SSL server.
  33  */
  34
  35 public interface ISessionCache {
  36
  37         /*
  38          * Retrieve session parameters by session ID. If the client sent
  39          * an intended server name (SNI extension), then that name is
  40          * also provided as parameter (printable ASCII, normalised to
  41          * lowercase, no space); otherwise, that parameter is null.
  42          * Session cache implementations are free to use the server name
  43          * or not; if the client specified a target name, and the cache
  44          * returns parameters with a different, non-null name, then the
  45          * session resumption will be rejected by the engine.
  46          *
  47          * If no parameters are found for that ID (and optional server
  48          * name), then this method shall return null.
  49          */
  50         SSLSessionParameters Retrieve(byte[] id, string serverName);
  51
  52         /*
  53          * Record new session parameters. These should be internally
  54          * indexed by their ID.
  55          */
  56         void Store(SSLSessionParameters sp);
  57 }
  58
  59 }