public bool sameAs(ReConfigChunk other)
{
// we ignore other var types for now....
bool ret = false; // assume the negative.
if (other != null)
{
// if there are 2 params and both match
if ((this.hasIncomingReset() && other.hasIncomingReset()) &&
(this.hasOutgoingReset() && other.hasOutgoingReset()))
{
ret = this.getIncomingReset().sameAs(other.getIncomingReset()) &&
this.getOutgoingReset().sameAs(other.getOutgoingReset());
}
else
{
// there is only one (of these) params
// that has to match too
if (this.hasIncomingReset() && other.hasIncomingReset())
{
ret = this.getIncomingReset().sameAs(other.getIncomingReset());
}
if (this.hasOutgoingReset() && other.hasOutgoingReset())
{
ret = this.getOutgoingReset().sameAs(other.getOutgoingReset());
}
}
}
return(ret);
}
/*
* https://tools.ietf.org/html/rfc6525
*/
public Chunk[] deal(ReConfigChunk rconf)
{
Chunk[] ret = new Chunk[1];
ReConfigChunk reply = null;
//logger.LogDebug("Got a reconfig message to deal with");
if (haveSeen(rconf))
{
// if not - is this a repeat
reply = getPrevious(rconf); // then send the same reply
}
if (reply == null)
{
// not a repeat then
reply = new ReConfigChunk(); // create a new thing
if (rconf.hasOutgoingReset())
{
OutgoingSSNResetRequestParameter oreset = rconf.getOutgoingReset();
int[] streams = oreset.getStreams();
if (streams.Length == 0)
{
streams = assoc.allStreams();
}
if (timerIsRunning())
{
markAsAcked(rconf);
}
// if we are behind, we are supposed to wait until we catch up.
if (oreset.getLastAssignedTSN() > assoc.getCumAckPt())
{
//logger.LogDebug("Last assigned > farTSN " + oreset.getLastAssignedTSN() + " v " + assoc.getCumAckPt());
foreach (int s in streams)
{
SCTPStream defstr = assoc.getStream(s);
// AC: All this call did was set an unused local variable. Removed for now.
//defstr.setDeferred(true);
}
ReconfigurationResponseParameter rep = new ReconfigurationResponseParameter();
rep.setSeq(oreset.getReqSeqNo());
rep.setResult(ReconfigurationResponseParameter.IN_PROGRESS);
reply.addParam(rep);
}
else
{
// somehow invoke this when TSN catches up ?!?! ToDo
//logger.LogDebug("we are up-to-date ");
ReconfigurationResponseParameter rep = new ReconfigurationResponseParameter();
rep.setSeq(oreset.getReqSeqNo());
int result = streams.Length > 0 ? ReconfigurationResponseParameter.SUCCESS_PERFORMED : ReconfigurationResponseParameter.SUCCESS_NOTHING_TO_DO;
rep.setResult((uint)result); // assume all good
foreach (int s in streams)
{
SCTPStream cstrm = assoc.delStream(s);
if (cstrm == null)
{
//logger.LogError("Close a non existant stream");
rep.setResult(ReconfigurationResponseParameter.ERROR_WRONG_SSN);
break;
// bidriectional might be a problem here...
}
else
{
cstrm.reset();
}
}
reply.addParam(rep);
}
}
// ponder putting this in a second chunk ?
if (rconf.hasIncomingReset())
{
IncomingSSNResetRequestParameter ireset = rconf.getIncomingReset();
/*The Re-configuration
* Response Sequence Number of the Outgoing SSN Reset Request
* Parameter MUST be the Re-configuration Request Sequence Number
* of the Incoming SSN Reset Request Parameter. */
OutgoingSSNResetRequestParameter rep = new OutgoingSSNResetRequestParameter(nextNearNo(), ireset.getReqNo(), assoc.getNearTSN());
int[] streams = ireset.getStreams();
rep.setStreams(streams);
if (streams.Length == 0)
{
streams = assoc.allStreams();
}
foreach (int s in streams)
{
SCTPStream st = assoc.getStream(s);
if (st != null)
{
st.setClosing(true);
}
}
reply.addParam(rep);
// set outbound timer running here ???
//logger.LogDebug("Ireset " + ireset);
}
}
if (reply.hasParam())
{
ret[0] = reply;
// todo should add sack here
//logger.LogDebug("about to reply with " + reply.ToString());
}
else
{
ret = null;
}
return(ret);
}