NAME
ntalkd —
remote user communication
server
SYNOPSIS
ntalkd |
DESCRIPTION
ntalkd is the server that notifies a user
that someone else wants to initiate 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.
SEE ALSO
HISTORY
The ntalkd command appeared in
4.3BSD, as talkd.