Method connect

src/rpc/core/rpcprotocol.h:124–139

        return boost::asio::write(stream.next_layer(), boost::asio::buffer(s, n));
    }
    bool connect(const string& server, const string& port)
    {
        boost::asio::ip::tcp::resolver resolver(stream.get_io_service());
        boost::asio::ip::tcp::resolver::query query(server.c_str(), port.c_str());
        boost::asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
        boost::asio::ip::tcp::resolver::iterator end;
        boost::system::error_code error = boost::asio::error::host_not_found;
        while (error && endpoint_iterator != end)
        {
            stream.lowest_layer().close();
            stream.lowest_layer().connect(*endpoint_iterator++, error);
        }
        if (error)
            return false;
        return true;
    }

private:
    bool fNeedHandshake;