git: 9front

ref: b03ae0993b8b96e340e560f9f649fc6c8b2b8081
dir: /sys/man/8/trampoline/

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.TH TRAMPOLINE 8
.SH NAME
trampoline \- forward incoming calls to another address
.SH SYNOPSIS
.B aux/trampoline
[
.B -9
]
[
.B -a
.I altaddr
]
[
.B -m
.I netdir
]
.I addr
.SH DESCRIPTION
.I Trampoline
can be used in a service file (see
.IR listen (8))
to link an incoming call to
another address that provides the service, typically on another machine.
.PP
.I Trampoline
dials
.I addr
and copies data between that connection
and its own standard input and output.
.PP
The options are:
.TP
.B -9
The connection carries only 9P messages.  In this case
.I trampoline
will relay whole messages at a time.
.TP
.BI -a " altaddr
Dial
.I altaddr
and relay between the two network connections,
ignoring standard input and output.
.TP
.BI -m " netdir
Restrict forwarding to particular machines.
.I Netdir
must be the incoming call directory.
.I Trampoline
finds the caller's MAC address
.I m
and checks that
.IR ndb (6)
contains an entry with
.BI ether= m
and the attribute
.BR trampok .
If no such entry is found, the call is rejected.
.PD
.SH FILES
.TF /sys/log/trampoline
.TP
.B /sys/log/trampoline
logs rejected calls
.SH SOURCE
.B /sys/src/cmd/aux/trampoline.c
.SH SEE ALSO
.IR dial (2),
.IR listen (8)