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socket: New option 'FlushPending' (boolean) to flush socket before entering listening state

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Disabled by default. When Enabled, before listening on the socket, flush the content.
Applies when Accept=no only.
This commit is contained in:
Renaud Métrich
2020-08-20 13:00:37 +02:00
committed by Lennart Poettering
parent f77d6ec953
commit 3e5f04bf64
8 changed files with 39 additions and 0 deletions
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12
man/systemd.socket.xml
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@@ -427,6 +427,18 @@
false, in read-only mode. Defaults to false.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>FlushPending=</varname></term>
<listitem><para>Takes a boolean argument. May only be used when
<option>Accept=no</option>. If yes, the socket's buffers are cleared after the
triggered service exited. This causes any pending data to be
flushed and any pending incoming connections to be rejected. If no, the
socket's buffers won't be cleared, permitting the service to handle any
pending connections after restart, which is the usually expected behaviour.
Defaults to <option>no</option>.
</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>MaxConnections=</varname></term>
<listitem><para>The maximum number of connections to