1 .\" Copyright (c) 1996-1999 Whistle Communications, Inc.
2 .\" All rights reserved.
4 .\" Subject to the following obligations and disclaimer of warranty, use and
5 .\" redistribution of this software, in source or object code forms, with or
6 .\" without modifications are expressly permitted by Whistle Communications;
7 .\" provided, however, that:
8 .\" 1. Any and all reproductions of the source or object code must include the
9 .\" copyright notice above and the following disclaimer of warranties; and
10 .\" 2. No rights are granted, in any manner or form, to use Whistle
11 .\" Communications, Inc. trademarks, including the mark "WHISTLE
12 .\" COMMUNICATIONS" on advertising, endorsements, or otherwise except as
13 .\" such appears in the above copyright notice or in the software.
15 .\" THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
16 .\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
17 .\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
18 .\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
19 .\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
20 .\" WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
21 .\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
22 .\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
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24 .\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
25 .\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
26 .\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
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34 .\" $Whistle: nghook.8,v 1.4 1999/01/20 03:19:45 archie Exp $
63 socket type node and connects it to hook
75 option is given, the third argument is interpreted as the path to a program,
76 and this program is executed with the remaining arguments as its arguments.
77 Before executing, the program Netgraph messages (specified by the
79 option) are sent to the node.
80 The program is executed with its standard input (unless closed by
82 and output connected to the hook.
86 option is not given, all data written to standard input is sent
87 to the node, and all data received from the node is relayed
89 Messages specified with
91 are sent to the node before the loop is entered.
96 is detected on standard input in this case.
98 The options are as follows:
99 .Bl -tag -width indent
101 Output each packet read in human-readable decoded
103 form instead of raw binary.
105 Increase the debugging verbosity level.
107 Execute the program specified by the third argument.
109 Loops all received data back to the hook in addition to writing it
112 Before executing the program (in
114 mode) send the given ASCII control message to the node.
115 This option may be given more than once.
117 Do not attempt to read any data from standard input.
120 utility will continue reading from the node until stopped by a signal.
122 Use file descriptor 0 for output instead of the default 1.
124 Use file descriptor 1 for input instead of the default 0.
133 system was designed and first implemented at Whistle Communications, Inc.\&
136 customized for the Whistle InterJet.
138 .An Archie Cobbs Aq Mt archie@whistle.com
140 Although all input is read in unbuffered mode,
141 there is no way to control the packetization of the input.
143 If the node sends a response to a message (specified by
145 this response is lost.