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TALKD(8) NetBSD System Manager's Manual TALKD(8)
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by Kimmo Suominen.
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ntalkd, talkd -- remote user communication server
ntalkd is the server that notifies a user that someone else wants to ini-
tiate a conversation. It acts as a repository of invitations, responding
to requests by clients wishing to rendezvous to hold a conversation.
In normal operation, a client, the caller, initiates a rendezvous by
sending a CTL_MSG to the server of type LOOK_UP (see
<protocols/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.
ntalkd supports the following options:
-d The -d option turns on debugging logging.
-l The -l option turns on accounting logging for ntalkd via the
talk(1), write(1), syslog(3), syslogd(8)
The ntalkd command appeared in 4.3BSD.
The original talkd program was coded improperly, in a machine and byte-
order dependent fashion. When this was corrected, it required a protocol
change, which necessitated a different daemon to handle it, thus ntalkd
or "new" talk daemon. The old daemon has long since been removed, but
the detritus remain.
NetBSD 4.0 March 23, 2004 NetBSD 4.0