remote user communication server
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
- Enable more verbose logging to syslog.
- Enable debug mode.
- Set timeout value to seconds.
- Set idle timeout value to seconds.
- Set request time-to-live value to seconds.
- Read the site-wide ACLs from filename.
- Apply a strict ACL policy.
- Display a help list.
- Display a short usage message.
- Display program version.
talkd command appeared in