text: /*
   * Authored by Alex Hultman, 2018-2020.
   * Intellectual property of third-party.
  
   * Licensed 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
  
   *     http://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.
   */
  
  #ifndef UWS_WEBSOCKETCONTEXTDATA_H
  #define UWS_WEBSOCKETCONTEXTDATA_H
  
  #include "Loop.h"
  #include "AsyncSocket.h"
  
  #include "MoveOnlyFunction.h"
  #include <string_view>
  #include <vector>
  
  #include "WebSocketProtocol.h"
  #include "TopicTree.h"
  #include "WebSocketData.h"
  
  namespace uWS {
  
  template <bool, bool, typename> struct WebSocket;
  
  /* todo: this looks identical to WebSocketBehavior, why not just std::move that entire thing in? */
  
  template <bool SSL, typename USERDATA>
  struct WebSocketContextData {
  private:
  
  public:
  
      /* This one points to the App's shared topicTree */
      TopicTree<TopicTreeMessage> *topicTree;
  
      /* The callbacks for this context */
      MoveOnlyFunction<void(WebSocket<SSL, true, USERDATA> *)> openHandler = nullptr;
      MoveOnlyFunction<void(WebSocket<SSL, true, USERDATA> *, std::string_view, OpCode)> messageHandler = nullptr;
      MoveOnlyFunction<void(WebSocket<SSL, true, USERDATA> *)> drainHandler = nullptr;
      MoveOnlyFunction<void(WebSocket<SSL, true, USERDATA> *, int, std::string_view)> closeHandler = nullptr;
      /* Todo: these should take message also; breaking change for v0.18 */
      MoveOnlyFunction<void(WebSocket<SSL, true, USERDATA> *, std::string_view)> pingHandler = nullptr;
      MoveOnlyFunction<void(WebSocket<SSL, true, USERDATA> *, std::string_view)> pongHandler = nullptr;
  
      /* Settings for this context */
      size_t maxPayloadLength = 0;
  
      /* We do need these for async upgrade */
      CompressOptions compression;
  
      /* There needs to be a maxBackpressure which will force close everything over that limit */
      size_t maxBackpressure = 0;
      bool closeOnBackpressureLimit;
      bool resetIdleTimeoutOnSend;
      bool sendPingsAutomatically;
  
      /* These are calculated on creation */
      std::pair<unsigned short, unsigned short> idleTimeoutComponents;
  
      /* This is run once on start-up */
      void calculateIdleTimeoutCompnents(unsigned short idleTimeout) {
          unsigned short margin = 4;
          /* 4, 8 or 16 seconds margin based on idleTimeout */
          while ((int) idleTimeout - margin * 2 >= margin * 2 && margin < 16) {
              margin = (unsigned short) (margin << 1);
          }
          idleTimeoutComponents = {
              idleTimeout - (sendPingsAutomatically ? margin : 0), /* reduce normal idleTimeout if it is extended by ping-timeout */
              margin /* ping-timeout - also used for end() timeout */
          };
      }
  
      ~WebSocketContextData() {
  
      }
  
      WebSocketContextData(TopicTree<TopicTreeMessage> *topicTree) : topicTree(topicTree) {
  
      }
  };
  
  }
  
  #endif // UWS_WEBSOCKETCONTEXTDATA_H
  