Method SendData

adapter/micro_thread/mt_connection.cpp:115–143

}

int UdpShortConn::SendData()
{
    if (!_action || !_msg_buff) {
        MTLOG_ERROR("conn not set action %p, or msg %p, error", _action, _msg_buff);
        return -100;
    }

    mt_hook_syscall(sendto);
    int ret = ff_hook_sendto(_osfd, _msg_buff->GetMsgBuff(), _msg_buff->GetMsgLen(), 0, 
                (struct sockaddr*)_action->GetMsgDstAddr(), sizeof(struct sockaddr_in));
    if (ret == -1)
    {
        if ((errno == EINTR) || (errno == EAGAIN) || (errno == EINPROGRESS))
        {
            return 0;
        }
        else
        {
            MTLOG_ERROR("socket send failed, fd %d, errno %d(%s)", _osfd, 
                      errno, strerror(errno));
            return -2;
        }
    }
    else
    {
        _msg_buff->SetHaveSndLen(ret);
        return ret;
    }
}

int UdpShortConn::RecvData()
{