Apache conf Listen not allowed here

kofifus

5/8/24, 12:27 PM

I try Apache 2.4 conf:

  Listen 443

  #if SECOND_HOST_PORT is defined and is not 443 listen on it 

  <IfDefine !SECOND_HOST_PORT>
    Define SECOND_HOST_PORT 443
  </IfDefine>

  <If "'${SECOND_HOST_PORT}' != '443'">
    Listen ${SECOND_HOST_PORT}
  </If>

But I get:

Listen not allowed here

In the line before last

What am I doing wrong ?

1 + 0

apache-2.4

Score:2

Server

Gerald Schneider

5/8/24, 12:43 PM

You are using Listen in a place where it is not allowed.

According to the Listen documentation the only allowed context is server config.

According to the context documentation this means that it is NOT allowed in a <VirtualHost> directive, a <Directory> directive, or in a .htaccess file.

Further, the description of a <Directory> context indicates that the <Location>, <Files>, <If>, and <Proxy> directives are handled like <Directory>.

So you can't use it inside an <If>.

It works inside the <IfDefine> directive.

Define SECOND_HOST_PORT 4711

<IfDefine SECOND_HOST_PORT>
  Listen ${SECOND_HOST_PORT}
</IfDefine>

+ 2

kofifus

5/8/24, 12:53 PM

Thanks! Is there any way to achieve what I want ? listen conditionally ?

Gerald Schneider

5/8/24, 1:05 PM

It should work inside the `<IfDefine>` directive.

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EN: Apache conf Listen not allowed here

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