TALKD(8c,C)                 AIX TCP/IP User's Guide                 TALKD(8c,C)



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talkd



PURPOSE

Provides the server function for the talk command.

SYNTAX


              +------+
/etc/talkd ---|      |---|
              +- -d -+


DESCRIPTION

The talkd command is the server that notifies a user (the callee) that someone
else (the caller) wants to initiate a conversation and sets up the conversation
if the callee accepts the invitation.  The caller initiates the conversation by
executing the talk command specifying the callee.  The callee accepts the
invitation by executing the talk command specifying the caller.

The talkd command listens at the socket defined in the /etc/services file with
an entry beginning with "ntalk".  This server is normally started by the inetd
server.  When talkd receives a LOOK_UP request from a local or remote talk
process, talkd scans its internal invitation table for an entry matching the
client with a caller.

If such a table entry exists, the client is the callee and talkd returns the
appropriate rendezvous address to the talk process for the callee.  The callee
process then establishes a stream connection with the caller process.

If no such entry exists, the client is the caller and the client sends an
ANNOUNCE request.  When talkd receives the ANNOUNCE request, talkd broadcasts
an invitation on the console of the foreign host where callee is logged in
unless the caller specifies a particular TTY.  At approximately 1 minute
intervals, talkd rebroadcasts the invitation until either the invitation is
answered by the callee or the call is canceled by the caller.

Note:  talkd uses the talk 4.3BSD protocol, which is not compatible with 4.3BSD
versions of talk.

FLAGS

-d  Displays debugging information.

FILES





Processed October 29, 1990        TALKD(8c,C)                                 1






TALKD(8c,C)                 AIX TCP/IP User's Guide                 TALKD(8c,C)



/etc/services       Defines Internet socket assignments.

/etc/utmp           Contains data users currently logged in.

RELATED INFORMATION

In this book:
"talk"
"inetd"
"rc.tcpip, rc.tcpip.local"













































Processed October 29, 1990        TALKD(8c,C)                                 2