X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.socket.xml;h=4483905832efe5feafe756515cd3253b90f39859;hp=170d010f601625c04679276c6062f8c3a9a803b3;hb=cc567c9beace114554f7e7f50c3a5181cc44a07d;hpb=9528592ff8d7ff361da430285deba8196e8984d5
diff --git a/man/systemd.socket.xml b/man/systemd.socket.xml
index 170d010f6..448390583 100644
--- a/man/systemd.socket.xml
+++ b/man/systemd.socket.xml
@@ -487,6 +487,42 @@
.
+
+ KeepAliveTime=
+ 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).
+
+
+
+ KeepAliveInterval=
+ 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 interger 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
@@ -498,21 +534,6 @@
.
-
- FastOpen=
- Takes a boolean
- argument. It works by using a TFO cookie (a TCP option) in the initial
- SYN packet to authenticate a previously connected client. If successful,
- it may start sending data to the client before the receipt of the final
- ACK packet of the three way handshake is received, skipping a round trip
- and lowering the latency in the start of transmission of data.
- This controls the TCP_FASTOPEN socket option (see
- the TCP
- Fast Open: expediting web services for details.)
- Defaults to
- .
-
-
Priority=Takes an integer
@@ -524,6 +545,47 @@
for details.).
+
+ DeferAccept=
+
+ 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=