RICE: A Reliable and Efficient Remote Instrumentation Collaboration Environment

Table 1

List of RICE’s session signaling protocol messages.

Message name	Purpose	Format
START_REQ	Sent from RICE client to RICE server to request a connection establishment	⟨START_REQ, USER_NAME, HOST_IP⟩
START_ACK	Sent from RICE server to RICE client to accept a connection request	⟨START_ACK, ADMIN_NAME⟩
UPDATE_LIST	Sent from RICE server to all connected RICE clients to update changes in user names/status	⟨UPDATE_LIST, USERS_STATUS⟩
PASS_LOCK	Sent from RICE server to a RICE client to grant instrument control privileges	⟨PASS_LOCK⟩
PASS_LOCK_HOST	Sent from a RICE client to RICE server to pass control privileges to another RICE client	⟨PASS_LOCK, HOST_IP⟩
GET_LOCK	Sent from RICE server to a RICE client to revoke instrument control privileges	⟨GET_LOCK⟩
CHAT_TEXT	Sent from a RICE client to RICE server to send a chat text message to other connected RICE clients	⟨CHAT_TEXT, TEXT_INFO⟩
UPDATE_CHAT_TEXT	Sent from RICE server to all connected RICE clients to relay a new chat text message	⟨UPDATE_CHAT_TEXT, TEXT_INFO⟩
CHECK_CONNECTION	Sent from RICE server to all connected RICE clients to check connection validity	⟨CHECK_CONNECTION⟩
END_REQ	Sent from RICE client or RICE server to terminate a connection	⟨END_REQ⟩
END_ACK	Sent from RICE client or RICE server to acknowledge termination of a connection	⟨END_ACK⟩