</refsect2>
<refsect2>
- <title>tickle <parameter>SRC-IPADDR</parameter>:<parameter>SRC-PORT</parameter> <parameter>DST-IPADDR</parameter>:<parameter>DST-PORT</parameter></title>
+ <title>tickle</title>
<para>
- Send a TCP tickle to the source host for the specified TCP
- connection. A TCP tickle is a TCP ACK packet with an invalid
- sequence and acknowledge number and will when received by the
- source host result in it sending an immediate correct ACK back
- to the other end.
+ Read a list of TCP connections, one per line, from standard
+ input and send a TCP tickle to the source host for each
+ connection. A connection is specified as:
+ </para>
+ <synopsis>
+ <parameter>SRC-IPADDR</parameter>:<parameter>SRC-PORT</parameter> <parameter>DST-IPADDR</parameter>:<parameter>DST-PORT</parameter>
+ </synopsis>
+ <para>
+ A single connection can be specified on the command-line
+ rather than on standard input.
+ </para>
+ <para>
+ A TCP tickle is a TCP ACK packet with an invalid sequence and
+ acknowledge number and will when received by the source host
+ result in it sending an immediate correct ACK back to the
+ other end.
</para>
<para>
TCP tickles are useful to "tickle" clients after a IP failover has