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man: mention that sd_bus_send() buffers locally, and sd_bus_process() is needed to flush it out

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Prompted-by: #17128
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Lennart Poettering 2020-09-23 10:09:53 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent d1f6e01e47
commit 533ee38b56
1 changed files with 10 additions and 1 deletions
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11
man/sd_bus_send.xml
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@ -68,6 +68,14 @@
single receiver). It's behavior is similar to calling
<citerefentry><refentrytitle>sd_bus_message_set_destination</refentrytitle><manvolnum>3</manvolnum></citerefentry>
followed by calling <function>sd_bus_send()</function>.</para>
<para><function>sd_bus_send()</function>/<function>sd_bus_send_to()</function> will write the message
directly to the underlying transport (e.g. kernel socket buffer) if possible. If the connection is not
set up fully yet the message is queued locally. If the transport buffers are congested any unwritten
message data is queued locally, too. If the connection has been closed or is currently being closed the
call fails.
<citerefentry><refentrytitle>sd_bus_process</refentrytitle><manvolnum>3</manvolnum></citerefentry> should
be invoked to write out any queued message data to the transport.</para>
</refsect1>
<refsect1>
@ -142,7 +150,8 @@
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_call_method</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_message_set_destination</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>
<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_process</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>