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libav_utils.cpp

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    dht_proxy_client.cpp 30.41 KiB
    /*
     *  Copyright (C) 2016-2018 Savoir-faire Linux Inc.
     *  Author: Sébastien Blin <sebastien.blin@savoirfairelinux.com>
     *          Adrien Béraud <adrien.beraud@savoirfairelinux.com>
     *
     *  This program is free software; you can redistribute it and/or modify
     *  it under the terms of the GNU General Public License as published by
     *  the Free Software Foundation; either version 3 of the License, or
     *  (at your option) any later version.
     *
     *  This program is distributed in the hope that it will be useful,
     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     *  GNU General Public License for more details.
     *
     *  You should have received a copy of the GNU General Public License
     *  along with this program. If not, see <https://www.gnu.org/licenses/>.
     */
    
    #if OPENDHT_PROXY_CLIENT
    
    #include "dht_proxy_client.h"
    
    #include <chrono>
    #include <json/json.h>
    #include <restbed>
    #include <vector>
    
    #include "dhtrunner.h"
    #include "op_cache.h"
    
    constexpr const char* const HTTP_PROTO {"http://"};
    
    namespace dht {
    
    struct DhtProxyClient::Listener
    {
        ValueCache cache;
        ValueCallback cb;
        Value::Filter filter;
        Sp<restbed::Request> req;
        std::thread thread;
        unsigned callbackId;
        Sp<bool> isCanceledViaClose;
        Sp<unsigned> pushNotifToken; // NOTE: unused if not using push notifications
        Listener(ValueCache&& c, const Sp<restbed::Request>& r, Value::Filter&& f, unsigned cid)
            : cache(std::move(c)), filter(std::move(f)), req(r), callbackId(cid), isCanceledViaClose(std::make_shared<bool>(false))
        {}
    };
    
    struct DhtProxyClient::ProxySearch {
        SearchCache ops {};
        std::map<size_t, Listener> listeners {};
    };
    
    DhtProxyClient::DhtProxyClient() : scheduler(DHT_LOG) {}
    
    DhtProxyClient::DhtProxyClient(std::function<void()> signal, const std::string& serverHost, const std::string& pushClientId)
    : serverHost_(serverHost), pushClientId_(pushClientId), scheduler(DHT_LOG), loopSignal_(signal)
    {
        if (!serverHost_.empty())
            startProxy();
    }
    
    void
    DhtProxyClient::confirmProxy()
    {
        if (serverHost_.empty()) return;
        getConnectivityStatus();
    }