Provided by: inetutils-talkd_1.9.4-10build1_amd64
talkd — 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 takes place.
-l, --logging Enable more verbose logging to syslog. -d, --debug Enable debug mode. -t, --timeout seconds Set timeout value to seconds. -i, --idle-timeout seconds Set idle timeout value to seconds. -r, --request-ttl seconds Set request time-to-live value to seconds. -a, --acl filename Read the site-wide ACLs from filename. -S, --strict-policy Apply a strict ACL policy. -?, --help Display a help list. --usage Display a short usage message. -V, --version Display program version.
The talkd command appeared in 4.3BSD.