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1 | .\" Copyright (c) 1983, 1991, 1993 | |
2 | .\" The Regents of the University of California. All rights reserved. | |
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5 | .\" modification, are permitted provided that the following conditions | |
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8 | .\" notice, this list of conditions and the following disclaimer. | |
9 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
10 | .\" notice, this list of conditions and the following disclaimer in the | |
11 | .\" documentation and/or other materials provided with the distribution. | |
12 | .\" 3. All advertising materials mentioning features or use of this software | |
13 | .\" must display the following acknowledgement: | |
14 | .\" This product includes software developed by the University of | |
15 | .\" California, Berkeley and its contributors. | |
16 | .\" 4. Neither the name of the University nor the names of its contributors | |
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20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
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31 | .\" | |
32 | .\" @(#)talkd.8 8.2 (Berkeley) 12/11/93 | |
33 | .\" | |
34 | .Dd December 11, 1993 | |
35 | .Dt TALKD 8 | |
36 | .Os BSD 4.3 | |
37 | .Sh NAME | |
38 | .Nm talkd | |
39 | .Nd remote user communication server | |
40 | .Sh SYNOPSIS | |
41 | .Nm talkd | |
42 | .Sh DESCRIPTION | |
43 | .Nm Talkd | |
44 | is the server that notifies a user that someone else wants to | |
45 | initiate a conversation. | |
46 | It acts as a repository of invitations, responding to requests | |
47 | by clients wishing to rendezvous to hold a conversation. | |
48 | In normal operation, a client, the caller, | |
49 | initiates a rendezvous by sending a | |
50 | .Tn CTL_MSG | |
51 | to the server of | |
52 | type | |
53 | .Tn LOOK_UP | |
54 | (see | |
55 | .Aq Pa protocols/talkd.h ) . | |
56 | This causes the server to search its invitation | |
57 | tables to check if an invitation currently exists for the caller | |
58 | (to speak to the callee specified in the message). | |
59 | If the lookup fails, | |
60 | the caller then sends an | |
61 | .Tn ANNOUNCE | |
62 | message causing the server to | |
63 | broadcast an announcement on the callee's login ports requesting contact. | |
64 | When the callee responds, the local server uses the | |
65 | recorded invitation to respond with the appropriate rendezvous | |
66 | address and the caller and callee client programs establish a | |
67 | stream connection through which the conversation takes place. | |
68 | .Sh SEE ALSO | |
69 | .Xr talk 1 , | |
70 | .Xr write 1 | |
71 | .Sh HISTORY | |
72 | The | |
73 | .Nm | |
74 | command appeared in | |
75 | .Bx 4.3 . |