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/*
* 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 {
/* Type queued up when publishing */
struct TopicTreeMessage {
std::string message;
/*OpCode*/ int opCode;
bool compress;
};
struct TopicTreeBigMessage {
std::string_view message;
/*OpCode*/ int opCode;
bool compress;
};
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, TopicTreeBigMessage> *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> *, std::string_view, int, int)> subscriptionHandler = nullptr;
MoveOnlyFunction<void(WebSocket<SSL, true, USERDATA> *, int, std::string_view)> closeHandler = nullptr;
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;
unsigned short maxLifetime;
/* 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, TopicTreeBigMessage> *topicTree) : topicTree(topicTree) {
}
};
}
#endif // UWS_WEBSOCKETCONTEXTDATA_H
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