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TALKD(8)							      TALKD(8)

NAME
       talkd - remote user communication server

SYNOPSIS
       talkd

DESCRIPTION
       Talkd  is  the  server that notifies a user that somebody else wants to
       initiate a conversation.	 It acts a repository of invitations, respond‐
       ing  to	requests  by clients wishing to rendezvous to hold a conversa‐
       tion.  In normal operation, a client,  the  caller,  initiates  a  ren‐
       dezvous by sending a CTL_MSG to the server of type LOOK_UP (see <proto‐
       cols/talkd.h>).	This causes the server to search its invitation tables
       to  check if an invitation currently exists for the caller (to speak to
       the callee specified in the message).  If the lookup fails, the	caller
       then  sends  an	ANNOUNCE  message  causing  the server to broadcast an
       announcement on the callee's login ports requesting contact.  When  the
       callee  responds,  the  local  server  uses  the recorded invitation to
       respond with the appropriate rendezvous	address	 and  the  caller  and
       callee  client programs establish a stream connection through which the
       conversation takes place.

SEE ALSO
       talk(1), write(1)

4.3 Berkeley Distribution	 June 24, 1990			      TALKD(8)

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