shithub: riscv

ref: d9564c0642b9a8280f8e4dfe9ff15a2c65b6d93d
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
] [
.B -t
.I timeout
]
.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.
.TP
.BI -t " timeout
Terminates the connection after
.I timeout
milliseconds of inactivity.
.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)