URELAY(1) BSD General Commands Manual URELAY(1)NAMEurelay — a UCSPI-based relay
SYNOPSISurelay [-hqVv] [-M msgsrc] [-m msgdst] [-S ignsrc] [-s igndst]
DESCRIPTION
The urelay tool is a simple relay client, based on Prof. Daniel J. Bern‐
stein's UCSPI input/output framework. It expects to be executed by a
UCSPI client application, and relays all data received on the standard
input to the UCSPI output channel, and all data received on the UCSPI
input channel to the standard output.
The following options are available:
-h Display a short help message and exit.
-M msgsrc
Send the specified string to the incoming connection as soon as
the forwarding tunnel has been established.
-m msgdst
Send the specified string to the outgoing connection as soon as
the forwarding tunnel has been established.
-S ignsrc
If the incoming connection's data stream starts with the speci‐
fied string, ignore it - do not send it to the outgoing connec‐
tion.
-s igndst
If the outgoing connection's data stream starts with the speci‐
fied string, ignore it - do not send it to the incoming connec‐
tion.
-q Quiet operation. urelay is even more quiet when more than one -q
flag is specified.
-V Display version information and exit. When combined with one or
more -v switches,
-v Verbose operation. urelay is even more verbose when more than
one -v flag is specified. urelay also attempts to display infor‐
mation about its build environment.
ENVIRONMENT
Not taken in consideration in the present version.
FILES
None relevant in the present version.
BUGS
There should be a way to specify non-socket-specific behavior, e.g. skip
fcntl(2) and shutdown(2) calls.
HISTORY
The urelay utility and this manual page was written by Peter Pentchev in
2002.
AUTHORS
Peter Pentchev ⟨roam@ringlet.net⟩.
FreeBSD July 16, 2003 FreeBSD
