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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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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
44is the server that notifies a user that someone else wants to
45initiate a conversation.
46It acts as a repository of invitations, responding to requests
47by clients wishing to rendezvous to hold a conversation.
48In normal operation, a client, the caller,
49initiates a rendezvous by sending a
50.Tn CTL_MSG
51to the server of
52type
53.Tn LOOK_UP
54(see
55.Aq Pa protocols/talkd.h ) .
56This causes the server to search its invitation
57tables to check if an invitation currently exists for the caller
58(to speak to the callee specified in the message).
59If the lookup fails,
60the caller then sends an
61.Tn ANNOUNCE
62message causing the server to
63broadcast an announcement on the callee's login ports requesting contact.
64When the callee responds, the local server uses the
65recorded invitation to respond with the appropriate rendezvous
66address and the caller and callee client programs establish a
67stream connection through which the conversation takes place.
68.Sh SEE ALSO
69.Xr talk 1 ,
70.Xr write 1
71.Sh HISTORY
72The
73.Nm
74command appeared in
75.Bx 4.3 .