X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.socket.xml;h=8394fa81aac5e7e65add6eaf7680de46aa624495;hp=aeeb97fccdccaa0063aaa6445af8f315ef796943;hb=06b643e7f5a3b79005dd57497897ab7255fe3659;hpb=8d0e0ddda6501479eb69164687c83c1a7667b33a
diff --git a/man/systemd.socket.xml b/man/systemd.socket.xml
index aeeb97fcc..8394fa81a 100644
--- a/man/systemd.socket.xml
+++ b/man/systemd.socket.xml
@@ -188,7 +188,7 @@
replaced with a
NUL character
before binding. For details, see
- unix7.
+ unix7.
If the address string is a
single number, it is read as port
@@ -487,6 +487,53 @@
.
+
+ KeepAliveTimeSec=
+ Takes time (in seconds) as argument . The connection needs to remain
+ idle before TCP starts sending keepalive probes. This controls the TCP_KEEPIDLE
+ socket option (see
+ socket7
+ and the TCP
+ Keepalive HOWTO for details.)
+ Defaults value is 7200 seconds (2 hours).
+
+
+
+ KeepAliveIntervalSec=
+ Takes time (in seconds) as argument between individual keepalive probes,
+ if the socket option SO_KEEPALIVE has been set on this socket seconds as argument.
+ This controls the TCP_KEEPINTVL socket option (see
+ socket7
+ and the TCP
+ Keepalive HOWTO for details.)
+ Defaults value is 75 seconds.
+
+
+
+ KeepAliveProbes=
+ Takes integer as argument. It's the number of unacknowledged probes to
+ send before considering the connection dead and notifying the application layer.
+ This controls the TCP_KEEPCNT socket option (see
+ socket7
+ and the TCP
+ Keepalive HOWTO for details.)
+ Defaults value is 9.
+
+
+
+ NoDelay=
+ Takes a boolean
+ argument. TCP Nagle's algorithm works by combining a number of
+ small outgoing messages, and sending them all at once.
+ This controls the TCP_NODELAY socket option (see
+ tcp7
+ Defaults to
+ .
+
+
Priority=Takes an integer
@@ -498,6 +545,47 @@
for details.).
+
+ DeferAcceptSec=
+
+ Takes time (in
+ seconds) as argument. If set, the
+ listening process will be awakened
+ only when data arrives on the socket,
+ and not immediately when connection is
+ established. When this option is set,
+ the
+ TCP_DEFER_ACCEPT
+ socket option will be used (see
+ tcp7),
+ and the kernel will ignore initial ACK
+ packets without any data. The argument
+ specifies the approximate amount of
+ time the kernel should wait for
+ incoming data before falling back to
+ the normal behaviour of honouring
+ empty ACK packets. This option is
+ beneficial for protocols where the
+ client sends the data first (e.g.
+ HTTP, in contrast to SMTP), because
+ the server process will not be woken
+ up unnecessarily before it can take
+ any action.
+
+
+ If the client also uses the
+ TCP_DEFER_ACCEPT
+ option, the latency of the initial
+ connection may be reduced, because the
+ kernel will send data in the final
+ packet establishing the connection
+ (the third packet in the "three-way
+ handshake").
+
+ Disabled by default.
+
+
+
ReceiveBuffer=SendBuffer=
@@ -722,16 +810,18 @@
finish. If a command does not exit
within the configured time, the socket
will be considered failed and be shut
- down again. All commands still running,
+ down again. All commands still running
will be terminated forcibly via
SIGTERM, and after another delay of
this time with SIGKILL. (See
in systemd.kill5.)
Takes a unit-less value in seconds, or
a time span value such as "5min
- 20s". Pass 0 to disable the timeout
- logic. Defaults to TimeoutStartSec= from the
- manager configuration file.
+ 20s". Pass 0 to disable the timeout
+ logic. Defaults to DefaultTimeoutStartSec= from the
+ manager configuration file
+ (see systemd-systemd.conf5).
+