total amount (in bytes) of data just
arrived through the socket connection
identified by <connId> and currently
buffered, not yet read
total amount (in bytes) of sent and not
yet acknowledged data since the last
time the socket connection identified
by <connId> has been opened
socket disconnection cause
0 - not available (socket has not yet
been closed)
1 - remote host TCP connection close
due to FIN/END: normal remote
disconnection decided by the remote
application
2 - remote host TCP connection close
due to RST, all other cases in which
the socket is aborted without
indication from peer (for instance
because peer doesn't send ack after
maximum number of retransmissions/
peer is no more alive). All these cases
include all the "FATAL" errors after
recv or send on the TCP socket (named
as different from EWOULDBLOCK)
3 - socket inactivity timeout
4 - network deactivation (PDP context
deactivation from network)
Not yet acknowledged data are available only for TCP connections.
The value <ack_waiting> is always 0 for UDP connections.