projects / unix-history / blame
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1 | .\" Copyright (c) 1983 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 04426121 | 3 | .\" |
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4 | .\" Redistribution and use in source and binary forms are permitted provided |
| 5 | .\" that: (1) source distributions retain this entire copyright notice and | |
| 6 | .\" comment, and (2) distributions including binaries display the following | |
| 7 | .\" acknowledgement: ``This product includes software developed by the | |
| 8 | .\" University of California, Berkeley and its contributors'' in the | |
| 9 | .\" documentation or other materials provided with the distribution and in | |
| 10 | .\" all advertising materials mentioning features or use of this software. | |
| 11 | .\" Neither the name of the University nor the names of its contributors may | |
| 12 | .\" be used to endorse or promote products derived from this software without | |
| 13 | .\" specific prior written permission. | |
| 14 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED | |
| 15 | .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF | |
| 16 | .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 04426121 | 17 | .\" |
| 1c15e888 | 18 | .\" @(#)talkd.8 6.4 (Berkeley) 6/24/90 |
| e1aed699 | 19 | .\" |
| 1c15e888 | 20 | .TH TALKD 8 "June 24, 1990" |
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21 | .UC 6 |
| 22 | .SH NAME | |
| 23 | talkd \- remote user communication server | |
| 24 | .SH SYNOPSIS | |
| 121e56ee | 25 | .B talkd |
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26 | .SH DESCRIPTION |
| 27 | .I Talkd | |
| 28 | is the server that notifies a user that somebody else wants to | |
| 29 | initiate a conversation. | |
| 30 | It acts a repository of invitations, responding to requests | |
| 31 | by clients wishing to rendezvous to hold a conversation. | |
| 32 | In normal operation, a client, the caller, | |
| 33 | initiates a rendezvous by sending a CTL_MSG to the server of | |
| 34 | type LOOK_UP (see | |
| 35 | .RI < protocols/talkd.h >). | |
| 36 | This causes the server to search its invitation | |
| 37 | tables to check if an invitation currently exists for the caller | |
| 38 | (to speak to the callee specified in the message). | |
| 39 | If the lookup fails, | |
| 40 | the caller then sends an ANNOUNCE message causing the server to | |
| 41 | broadcast an announcement on the callee's login ports requesting contact. | |
| 42 | When the callee responds, the local server uses the | |
| 43 | recorded invitation to respond with the appropriate rendezvous | |
| 44 | address and the caller and callee client programs establish a | |
| 45 | stream connection through which the conversation takes place. | |
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46 | .SH SEE ALSO |
| 47 | talk(1), write(1) |