来自所有挂载点的来自源的 Icecast 音频

Question

我有一个 Icecast2 服务器，有 6 个挂载，由 Ices2 提供间歇性的 .ogg 音频流。当 Ices2 没有发送流时，它有一个后备挂载到静默.ogg，这会保持流继续运行，直到 Ices2 再次连接到挂载。

问题在于，无论我连接到哪个挂载点，我都会收到来自所有其他 Ices2 提要的流。

这是我的 icecast.xml：

<icecast>
<location>Toronto</location>
<admin>webmaster@example.com</admin>

<limits>
    <clients>100</clients>
    <sources>10</sources>
    <queue-size>524288</queue-size>
    <client-timeout>30</client-timeout>
    <header-timeout>15</header-timeout>
    <source-timeout>100</source-timeout>
     <burst-size>65535</burst-size>
</limits>

<authentication>
    <!-- Sources log in with username 'source' -->
    <source-password>hackme</source-password>
    <!-- Relays log in username 'relay' -->
    <relay-password>hackme</relay-password>

    <!-- Admin logs in with the username given below -->
    <admin-user>admin</admin-user>
    <admin-password>changeMe</admin-password>
</authentication>

<hostname>sound.example.com</hostname>

<!-- You may have multiple <listener> elements -->
<listen-socket>
    <port>8000</port>
    <ssl>1</ssl>
</listen-socket>
<listen-socket>
    <port>8001</port>
</listen-socket>

<relays-on-demand>0</relays-on-demand>

<mount> 
    <mount-name>/mount1.ogg</mount-name> 
    <max-listeners>5</max-listeners> 
    <max-listener-duration>36000</max-listener-duration> 
    <burst-size>65536</burst-size>
    <fallback-mount>/silent.ogg</fallback-mount>
        <fallback-override>1</fallback-override>
        <fallback-when-full>1</fallback-when-full>  
        <public>0</public>    
</mount> 
<mount> 
     <mount-name>/mount2.ogg</mount-name> 
    <max-listeners>5</max-listeners> 
    <max-listener-duration>36000</max-listener-duration> 
    <burst-size>65536</burst-size>      
    <fallback-mount>/silent.ogg</fallback-mount>
        <fallback-override>1</fallback-override>
        <fallback-when-full>1</fallback-when-full>      
        <public>0</public>    
</mount> 
<mount> 
    <mount-name>/mount3.ogg</mount-name> 
    <max-listeners>5</max-listeners> 
    <max-listener-duration>36000</max-listener-duration> 
    <burst-size>65536</burst-size>      
    <fallback-mount>/silent.ogg</fallback-mount>
        <fallback-override>1</fallback-override>
        <fallback-when-full>1</fallback-when-full>      
        <public>0</public>    
</mount> 
<mount> 
    <mount-name>/mount4.ogg</mount-name> 
    <max-listeners>5</max-listeners> 
    <max-listener-duration>36000</max-listener-duration> 
    <burst-size>65536</burst-size>      
    <fallback-mount>/silent.ogg</fallback-mount>
        <fallback-override>1</fallback-override>
        <fallback-when-full>1</fallback-when-full>      
        <public>0</public>    
</mount> 
<mount> 
    <mount-name>/mount5.ogg</mount-name> 
    <max-listeners>5</max-listeners> 
    <max-listener-duration>36000</max-listener-duration> 
    <burst-size>65536</burst-size>      
    <fallback-mount>/silent.ogg</fallback-mount>
        <fallback-override>1</fallback-override>
        <fallback-when-full>1</fallback-when-full>      
        <public>0</public>    
</mount>     

<fileserve>1</fileserve>

<paths>
    <!-- basedir is only used if chroot is enabled -->
    <basedir>/usr/share/icecast2</basedir>

    <!-- Note that if <chroot> is turned on below, these paths must both
         be relative to the new root, not the original root -->
    <logdir>/var/log/icecast2</logdir>
    <webroot>/usr/share/icecast2/web</webroot>
    <adminroot>/usr/share/icecast2/admin</adminroot>
    <ssl-certificate>/etc/icecast2/fullchain.pem</ssl-certificate>

    <alias source="/" destination="/status.xsl"/>
</paths>

<logging>
    <accesslog>access.log</accesslog>
    <errorlog>error.log</errorlog>
    <!-- <playlistlog>playlist.log</playlistlog> -->
    <loglevel>4</loglevel> <!-- 4 Debug, 3 Info, 2 Warn, 1 Error -->
    <logsize>10000</logsize> <!-- Max size of a logfile -->
</logging>

<security>
    <chroot>0</chroot>

</security>

Answer 1

所有挂载都回退到同一个流（或者那是一个文件？）：/silent.ogg

由于所有挂载点也都启用了覆盖，因此产生的行为可能不是预期的。

在 Icecast 中，所有客户端在挂载点的上下文中都是无状态的。这意味着一旦侦听器从/mountX.ogg 转移到/silent.ogg，就没有任何关于会影响后续行为的原始挂载点的概念。这意味着如果现在/mountY.ogg 上线，由于覆盖，它将获取/silent.ogg 的所有 个当前客户。

解开这种设置的一种方法是使用不相交的后备链。例如/mountX.ogg 到 /silentX.ogg 等

旁注：仅在非常短暂的时间段内推荐回退到文件并且文件必须具有高比特率。否则，您最终会得到侦听器客户端的很多静默，因为没有真正的速率限制。这可能会导致玩家缓冲几分钟或几小时的沉默。