SPECIFICATION
Shuffles the order of incoming packets. Used to exercise the recovery mechanisms of other protocols.

SYNOPSIS
VDISORDER sessions deliver packets in a somewhat different order than they receive them. The characteristics of the reordering are controlled by per-session parameters which can be set by control operations. VDISORDER will eventually deliver all packets it receives.

VDISORDER has no effect on outgoing packets.

REALM
VDISORDER is in the ASYNC realm.

PARTICIPANTS
VDISORDER passes participants to the lower protocols without manipulating them.

CONTROL OPERATIONS

VDISORDER_SET_ARRIVAL_INTERVAL:

Sets the arrival interval for this session. This is the number of packets that are delivered in-order before the session goes into a disordering state. (session only)

Input:

int interval

Output:

none

VDISORDER_GET_ARRIVAL_INTERVAL:

Returns the arrival interval for this session. (session only)

Input:

none

Output:

int interval

VDISORDER_SET_DISORDER_INTERVAL:

Sets the disorder interval for this session. This is the number of packets that are held while a session is in a disordering state before the set is delivered in a random order to the upper protocol (and the session leaves the disordering state.) This parameter controls how far out-of-order a packet might arrive. (session only)

Input:

int interval

Output:

none

VDISORDER_GET_DISORDER_INTERVAL:

Returns the disorder interval for this session. (session only)

Input:

none

Output:

int interval

VDISORDER_SET_TIMEOUT_INTERVAL:

Sets the timeout interval for this session. When a session enters a disordering state, it starts a timeout event for this many milliseconds. If this event fires before the session has received sufficient packets to satisfy the disorder interval, it disorders the packets and delivers them to the upper protocol anyway. (session only)

Input:

int interval

Output:

none

VDISORDER_GET_TIMEOUT_INTERVAL:

Returns the timeout interval for this session. (session only)

Input:

none

Output:

int interval

AUTHOR
Erich Nahum