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The active Module
The active utility module provides a single, non-redefinable
variable that holds information about active connections:
- [active_conn : table[conn_id] of connection]
Indexed by a conn_id (Figure 7.3.1) giving the
originator/responder addresses/ports, returns the connection's
connection record. As usual, accessing
the table with a non-existing index results in a run-time error,
so you should first test for the presence of the index using
the in operator.
Default: empty.
This functionality is quite similar to that of the active_connection
function, and Deficiency: arguably this module should be removed in favor
of the function. It does, however, provide a useful example of maintaining
bookkeeping by defining additional handlers for events that already have
handlers elsewhere.
Vern Paxson
2002-11-17