run()
{
boost::asio::async_read(m_socket,
boost::asio::buffer(m_buffer, head_size),
boost::bind(&ThreadedSafeClient::handle_read_header, shared_from_this(),
boost::asio::placeholders::error, m_buffer, head_size));
}
handle_read_header（）
{
//处理头数据，获得负载长度
boost::asio::async_read(m_socket,
boost::asio::buffer(m_buffer + NET_BUFF_HEAD_SIZE, body_size),
boost::bind(&ThreadedSafeClient::handle_read_body, shared_from_this(),
boost::asio::placeholders::error, pdu_name, m_buffer + NET_BUFF_HEAD_SIZE, body_size))
}
handle_read_body()
{
boost::asio::async_read(m_socket,
boost::asio::buffer(m_buffer, NET_BUFF_HEAD_SIZE),
boost::bind(&ThreadedSafeClient::handle_read_header, shared_from_this(),
boost::asio::placeholders::error, m_buffer, NET_BUFF_HEAD_SIZE));
}