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-rw-r--r--doc/src/sgml/libpq.sgml53
1 files changed, 52 insertions, 1 deletions
diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index d3a22181825..11161d993f5 100644
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.308 2010/06/17 16:03:30 tgl Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/libpq.sgml,v 1.309 2010/06/23 21:54:13 rhaas Exp $ -->
<chapter id="libpq">
<title><application>libpq</application> - C Library</title>
@@ -280,6 +280,57 @@
</listitem>
</varlistentry>
+ <varlistentry id="libpq-keepalives" xreflabel="keepalives">
+ <term><literal>keepalives</literal></term>
+ <listitem>
+ <para>
+ Controls whether TCP keepalives are used. The default value is 1,
+ meaning on, but you can change this to 0, meaning off, if keepalives
+ are not wanted. This parameter is ignored for connections made via
+ a Unix-domain socket.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="libpq-keepalives-idle" xreflabel="keepalives_idle">
+ <term><literal>keepalives_idle</literal></term>
+ <listitem>
+ <para>
+ On systems that support the <symbol>TCP_KEEPIDLE</symbol> socket
+ option, specifies the number of seconds between sending keepalives
+ on an otherwise idle connection. A value of zero uses the system
+ default. This parameter is ignored for connections made via a
+ Unix-domain socket, or if keepalives are disabled.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="libpq-keepalives-interval" xreflabel="keepalives_interval">
+ <term><literal>keepalives_interval</literal></term>
+ <listitem>
+ <para>
+ On systems that support the <symbol>TCP_KEEPINTVL</symbol> socket
+ option, specifies how long, in seconds, to wait for a response to a
+ keepalive before retransmitting. A value of zero uses the system
+ default. This parameter is ignored for connections made via a
+ Unix-domain socket, or if keepalives are disabled.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="libpq-keepalives-count" xreflabel="keepalives_count">
+ <term><literal>keepalives_count</literal></term>
+ <listitem>
+ <para>
+ On systems that support the <symbol>TCP_KEEPCNT</symbol> socket
+ option, specifies how many keepalives can be lost before the
+ connection is considered dead. A value of zero uses the system
+ default. This parameter is ignored for connections made via a
+ Unix-domain socket, or if keepalives are disabled.
+ </para>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="libpq-connect-tty" xreflabel="tty">
<term><literal>tty</literal></term>
<listitem>