NAME¶
talkd —
remote user communication
server
SYNOPSIS¶
DESCRIPTION¶
Talkd 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¶
talk(1),
write(1)
HISTORY¶
The
talkd command appeared in
4.3BSD.