diff dbclient.1 @ 1516:33b872649eb7

Add dbclient '-J &fd' option for a file descriptor Based on patch by Harald Becker
author Matt Johnston <matt@ucc.asn.au>
date Sun, 18 Feb 2018 15:12:15 +0800
parents f787f60f8e45
children 94323a20e572
line wrap: on
line diff
--- a/dbclient.1	Sun Feb 18 11:22:13 2018 +0800
+++ b/dbclient.1	Sun Feb 18 15:12:15 2018 +0800
@@ -111,11 +111,22 @@
 .B \-I \fIidle_timeout
 Disconnect the session if no traffic is transmitted or received for \fIidle_timeout\fR seconds.
+.\" TODO: how to avoid a line break between these two -J arguments?
 .B \-J \fIproxy_command
+.B \-J \fI&fd
 Use the standard input/output of the program \fIproxy_command\fR rather than using
 a normal TCP connection. A hostname should be still be provided, as this is used for
 comparing saved hostkeys. This command will be executed as "exec proxy_command ..." with the
 default shell.
+The second form &fd will make dbclient use the numeric file descriptor as a socket. This
+can be used for more complex tunnelling scenarios. Example usage with socat is
+socat EXEC:'dbclient -J &38 ev',fdin=38,fdout=38 TCP4:host.example.com:22
 .B \-B \fIendhost:endport
 "Netcat-alike" mode, where Dropbear will connect to the given host, then create a