Method get_param

tools/server/server-http.h:48–54

    const std::function<bool()> & should_stop;

    std::string get_param(const std::string & key, const std::string & def = "") const {
        auto it = params.find(key);
        if (it != params.end()) {
            return it->second;
        }
        return def;
    }
};

struct server_http_context {