void networkStatusChangeNotif(unsigned int assocID, short destAddrIndex, unsigned short newState, void* ulpDataPtr)
{
SCTP_AssociationStatus assocStatus;
SCTP_PathStatus pathStatus;
unsigned short pathID;
if (verbose) {
sprintf(tstr, "%-8x: Network status change: path %u is now %s\n",
assocID, destAddrIndex, ((newState == SCTP_PATH_OK) ? "ACTIVE" : "INACTIVE"));
waddstr(statusWin,tstr);
wrefresh(statusWin);
}
/* if the primary path has become inactive */
if ((newState == SCTP_PATH_UNREACHABLE) &&
(destAddrIndex == sctp_getPrimary(assocID))) {
/* select a new one */
sctp_getAssocStatus(assocID, &assocStatus);
for (pathID=0; pathID < assocStatus.numberOfAddresses; pathID++){
sctp_getPathStatus(assocID, pathID, &pathStatus);
if (pathStatus.state == SCTP_PATH_OK)
break;
}
/* and use it */
if (pathID < assocStatus.numberOfAddresses) {
sctp_setPrimary(assocID, pathID);
getDestinationIPaddr((char *)peeraddr);
}
}
}
void periodicRefreshFunction(unsigned int timerID, void *parameter1, void *parameter2)
{
/* Display the primary path details by default when data arrive */
displayPathDetails = 1;
chosenPath = sctp_getPrimary(associationID);
ncurses_display_PathStatus(associationID);
sctp_startTimer(deltaT/1000, (deltaT%1000)*1000, periodicRefreshFunction, NULL, NULL);
}
short
SCTP_getPrimary(unsigned int associationID)
{
int result;
if ((result = sctp_getPrimary(associationID)) < 0) {
fprintf(stderr, "sctp_setPrimary: error value (%i) returned.\n", result);
fflush(stderr);
}
return result;
}
void getDestinationIPaddr(char paddr[SCTP_MAX_IP_LEN])
/*This routine copies the IP address of the primary path into an array paddr */
{
SCTP_PathStatus pathStatus;
int i, pathID;
pathID = sctp_getPrimary(associationID);
sctp_getPathStatus(associationID, pathID, &pathStatus);
strcpy((char *)paddr, (const char *)pathStatus.destinationAddress);
/* refreshes the ncurses window with the new IP address */
mvwaddstr(peerWinStatus, 0, 0, paddr);
for (i=strlen(paddr);i<COLS-3;i++)
mvwaddch(peerWinStatus,0,i,'-');
wrefresh(peerWinStatus);
wrefresh(statusWin);
}
void networkStatusChangeNotif(unsigned int assocID, short destAddrIndex, unsigned short newState, void* ulpDataPtr)
{
SCTP_AssociationStatus assocStatus;
SCTP_PathStatus pathStatus;
unsigned short pathID;
sctp_getPathStatus(assocID, destAddrIndex , &pathStatus);
sprintf(statusInfo, " Association ID =%-8x: Network status change: path %u (towards %s) is now %s\n",
assocID, destAddrIndex, pathStatus.destinationAddress, pathStateName(newState));
waddstr(statusWin,statusInfo);
wrefresh(statusWin);
/* if the primary path has become inactive */
if ((newState == SCTP_PATH_UNREACHABLE) &&
(destAddrIndex == sctp_getPrimary(assocID))) {
sctp_getAssocStatus(assocID, &assocStatus);
for (pathID=0; pathID < assocStatus.numberOfAddresses; pathID++)
{
sctp_getPathStatus(assocID, pathID, &pathStatus);
if (pathStatus.state == SCTP_PATH_OK)
{
break;
}
}
/* and use it */
if (pathID < assocStatus.numberOfAddresses)
{
sctp_setPrimary(assocID, pathID);
}
}
/* Display functions */
ncurses_display_AssocStatus(assocID);
displayPathDetails = 0;
ncurses_display_PathStatus(assocID);
}
void dataArriveNotif(unsigned int assocID, unsigned short streamID, unsigned int len,
unsigned short streamSN,unsigned int TSN, unsigned int protoID,
unsigned int unordered, void* ulpDataPtr)
{
char chunk[SCTP_MAXIMUM_DATA_LENGTH + 1];
unsigned int length;
int i;
unsigned int InstreamID_position = 0;
unsigned int tsn;
unsigned short ssn;
sprintf(statusInfo, " Association ID =%-8x: Data arrived (%u bytes on stream %u, %s)\n",
assocID, len, streamID, (unordered==SCTP_ORDERED_DELIVERY)?"ordered":"unordered");
waddstr(statusWin,statusInfo);
wrefresh(statusWin);
/* read it */
length = SCTP_MAXIMUM_DATA_LENGTH;
sctp_receive(assocID, streamID, (unsigned char *)chunk, &length, &ssn, &tsn, SCTP_MSG_DEFAULT);
chunk[length]=0;
/* and display it */
sprintf(receivedInfo, " Data received : %s", chunk);
waddstr(receivedWin,receivedInfo);
wrefresh(receivedWin);
/* Stores the stream Id into the structure statusUpdate each time a data arrives */
for (i=0; i <statusUpdate.noOfInStreams; i++)
{
if (statusUpdate.InstreamIDList[i] == -1)
{
statusUpdate.InstreamIDList[i] = streamID;
InstreamID_position = i;
}
else if (statusUpdate.InstreamIDList[i] != -1 &&
statusUpdate.InstreamIDList[i] != streamID)
{
statusUpdate.InstreamIDList[i] = streamID;
InstreamID_position = i;
}
else if (statusUpdate.InstreamIDList[i] == streamID)
{
InstreamID_position = i;
}
}
/* Update the current position of the InstreamIDList array */
currInstreamID = InstreamID_position;
/* Display the Association details */
ncurses_display_AssocStatus(assocID);
if (!periodicRefresh)
{
/* Display the primary path details by default when data arrive */
displayPathDetails = 1;
chosenPath = sctp_getPrimary(assocID);
ncurses_display_PathStatus(assocID);
}
}
/* This function reads the input from the parameters of the SCTP_PathStatus structure
and displays the data on a window of ncurses. */
void ncurses_display_PathStatus(unsigned int assocID)
{
SCTP_AssociationStatus assocStatus;
SCTP_PathStatus pathStatus;
unsigned short pathID;
unsigned int Rto[SCTP_MAX_NUM_ADDRESSES], HB_Interval[SCTP_MAX_NUM_ADDRESSES];
unsigned int SRTT[SCTP_MAX_NUM_ADDRESSES],RTTVar[SCTP_MAX_NUM_ADDRESSES];
unsigned int SlowStThres[SCTP_MAX_NUM_ADDRESSES], PartBytesAck[SCTP_MAX_NUM_ADDRESSES];
unsigned int CongestWin[SCTP_MAX_NUM_ADDRESSES],CongestWin2[SCTP_MAX_NUM_ADDRESSES];
unsigned int MTU[SCTP_MAX_NUM_ADDRESSES], OutBytesPerAddr[SCTP_MAX_NUM_ADDRESSES];
short State[SCTP_MAX_NUM_ADDRESSES];
char destaddr[SCTP_MAX_NUM_ADDRESSES][SCTP_MAX_IP_LEN];
unsigned char IPTos[SCTP_MAX_NUM_ADDRESSES];
wclear(pathWin);
wrefresh(pathWin);
sctp_getAssocStatus(assocID, &assocStatus);
for (pathID=0; pathID < assocStatus.numberOfAddresses; pathID++)
{
sctp_getPathStatus(assocID, pathID, &pathStatus);
strcpy((char *)destaddr[pathID], (const char *)pathStatus.destinationAddress);
State[pathID] = pathStatus.state;
Rto[pathID] = pathStatus.rto;
HB_Interval[pathID] = pathStatus.heartbeatIntervall;
SRTT[pathID] = pathStatus.srtt;
RTTVar[pathID] = pathStatus.rttvar;
SlowStThres[pathID] = pathStatus.ssthresh;
PartBytesAck[pathID] = pathStatus.partialBytesAcked;
CongestWin[pathID] = pathStatus.cwnd;
CongestWin2[pathID] = pathStatus.cwnd2;
MTU[pathID] = pathStatus.mtu;
OutBytesPerAddr[pathID] = pathStatus.outstandingBytesPerAddress;
IPTos[pathID] = pathStatus.ipTos;
if (displayPathDetails == 0)
{
/* Check if the current path is the primary path */
if (pathID == sctp_getPrimary(assocID))
{
sprintf(pathInfo," Primary Path ID : %d, state of path : %s\n",
pathID, pathStateName(State[pathID]));
waddstr(pathWin,pathInfo);
wrefresh(pathWin);
}
else
{
sprintf(pathInfo," Path ID : %d, state of path : %s\n",
pathID, pathStateName(State[pathID]));
waddstr(pathWin,pathInfo);
wrefresh(pathWin);
}
}
else if (displayPathDetails == 1)
{
mvwaddstr(pathWin,0,0,"[Hit Backspace to return to main menu]\n");
wrefresh(pathWin);
if (pathID == chosenPath)
{
sprintf(pathInfo,"\n Path ID : %d, State of path : %s\t\t Destination address : %s\n Heartbeat Interval : %-8u\t\t Retransmisson time(msecs) : %-8d\n Smooth Round Trip time(msecs) : %-8d\t Round Trip time Variations(msecs) : %-8d\n Slow start threshold : %-8d\t\t Congestion Window Size : %-8d\n Outstanding Bytes per Address : %-8d\t Congestion Window Size 2 : %-8d\n Partial bytes acknowledge : %-8d\t\t IP type of service : %x\n MTU : %d bytes\n\n",
pathID, pathStateName(State[pathID]),
destaddr[pathID],HB_Interval[pathID],Rto[pathID],
SRTT[pathID],RTTVar[pathID],SlowStThres[pathID],CongestWin[pathID],
OutBytesPerAddr[pathID], CongestWin2[pathID],PartBytesAck[pathID],
IPTos[pathID],MTU[pathID]);
waddstr(pathWin,pathInfo);
wrefresh(pathWin);
}
}
}
wrefresh(textWin);
displayPathDetails = 0;
}
