tcp_connection_pool.h

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// Copyright (C) 2022 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#ifndef TCP_CONNECTION_POOL_H
#define TCP_CONNECTION_POOL_H
 
#include <tcp/tcp_connection.h>
 
#include <list>
#include <mutex>
 
namespace isc {
namespace tcp {
 
typedef std::list<TcpConnectionPtr> TcpConnectionList;
 
class TcpConnectionPool {
public:
 
    void start(const TcpConnectionPtr& connection);
 
    void shutdown(const TcpConnectionPtr& connection);
 
    void stop(const TcpConnectionPtr& connection);
 
    void stopAll();
 
    size_t usedByRemoteIp(const asiolink::IOAddress& remote_ip,
                          size_t& total_connections);
 
    static std::atomic<uint64_t> started_counter_;
 
    static std::atomic<uint64_t> stopped_counter_;
 
    static std::atomic<uint64_t> rejected_counter_;
 
protected:
 
    void stopAllInternal();
 
    size_t usedByRemoteIpInternal(const asiolink::IOAddress& remote_ip,
                                  size_t& total_connections);
 
    TcpConnectionList connections_;
 
    std::mutex mutex_;
};
 
}
}
 
#endif