问libssh -发送多次请求并从信道读取答案

EN

int ret = ssh_channel_request_exec(m_channel, request.c_str());
if (ret != SSH_OK)
{
    ssh_channel_close(m_channel);
    ssh_channel_free(m_channel);
    return false;
}

std::stringstream sstream;
nbytes = ssh_channel_read(m_channel, buffer, sizeof(buffer), 0);
while (nbytes > 0)
{
    sstream.write(buffer, nbytes);
    nbytes = ssh_channel_read(m_channel, buffer, sizeof(buffer), 0);
}

if (nbytes < 0) // 'nbytes' becomes zero the first time, the channel is not closed the second time!
{
    ssh_channel_close(m_channel);
    ssh_channel_free(m_channel);
    return false;
}

response = sstream.str();