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 restartNotif(unsigned int assocID, void* ulpDataPtr)
{
SCTP_AssociationStatus assocStatus;
if (verbose) {
sprintf(tstr, "%-8x: Restart\n", assocID);
waddstr(statusWin,tstr);
}
sctp_getAssocStatus(assocID, &assocStatus);
}
/* 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_AssocStatus(unsigned int assocID)
{
SCTP_AssociationStatus assocStatus;
int i;
char tstr[200];
wclear(assocWin);
wrefresh(assocWin);
sctp_getAssocStatus(assocID,&assocStatus);
sprintf(assocInfo," Association ID : %d, Local port : %d, Remote port : %d\n",
assocID,assocStatus.sourcePort,assocStatus.destPort);
waddstr(assocWin,assocInfo);
wrefresh(assocWin);
sprintf(assocInfo," Local address(es) is(are) :");
for (i=0; i < noOfLocalAddresses; i++)
{
sprintf(tstr," %s,", localAddressList[i]);
strcat(assocInfo,tstr);
}
waddstr(assocWin,assocInfo);
wrefresh(assocWin);
sprintf(assocInfo,"\n No. of Destination address : %d,\t\t Primary destination address : %s\n Number of incoming Streams : %d,\t\t Number of outgoing streams : %d\n Primary Address Index: %d,\t\t\t Current Receiver Window Size : %d\n Outstanding bytes : %-8d,\t\t\t No. of chunks in send queue : %d\n No. of chunks in retransmission queue : %d,\t No. of chunks in reception queue : %d\n Initial Round Trip Timeout : %d (msecs),\t Minimum Round Trip Timeout : %d (msecs)\n Maximum Round Trip Timeout : %d(msecs),\t Cookie Lifetime : %d (msecs)\n Max retransmission per association : %d,\t Max retransmission per path : %d\n Max Initial Retransmission : %d,\t\t Local Receiver Window : %d\n Delay for delay acknowledge : %d (msecs),\t IP Type Of Service : %x\n Current Incoming stream ID : %d,\t\t Current Outgoing stream ID : %d ",
assocStatus.numberOfAddresses, assocStatus.primaryDestinationAddress,
statusUpdate.noOfInStreams, statusUpdate.noOfOutStreams, assocStatus.primaryAddressIndex,
assocStatus.currentReceiverWindowSize, assocStatus.outstandingBytes,
assocStatus.noOfChunksInSendQueue, assocStatus.noOfChunksInRetransmissionQueue,
assocStatus.noOfChunksInReceptionQueue, assocStatus.rtoInitial, assocStatus.rtoMin,
assocStatus.rtoMax, assocStatus.validCookieLife, assocStatus.assocMaxRetransmits,
assocStatus.pathMaxRetransmits, assocStatus.maxInitRetransmits, assocStatus.myRwnd,
assocStatus.delay, assocStatus.ipTos,
statusUpdate.InstreamIDList[currInstreamID],
statusUpdate.OutstreamIDList[currOutstreamID] );
waddstr(assocWin,assocInfo);
wrefresh(assocWin);
wrefresh(textWin);
}
int SCTP_getAssocStatus(unsigned int associationID, SCTP_AssociationStatus* status)
{
int result;
if ((result = sctp_getAssocStatus(associationID, status)) != SCTP_SUCCESS) {
if (result == SCTP_LIBRARY_NOT_INITIALIZED) {
fprintf(stderr, "sctp_getAssocStatus: library not initialized.\n");
} else
if (result == SCTP_ASSOC_NOT_FOUND) {
fprintf(stderr, "sctp_getAssocStatus: association not found.\n");
} else
if (result == SCTP_PARAMETER_PROBLEM) {
fprintf(stderr, "sctp_getAssocStatus: parameter problem (NULL pointer ?)\n");
} else {
fprintf(stderr, "sctp_getAssocStatus: unknown value (%i) returned.\n", result);
}
fflush(stderr);
}
return result;
}
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 stdinCallback(int fd, short int revents, short int* gotEvents, void* dummy)
{
/* This function gets triggered by the ncurses library upon *any* keystroke
from user (for handling of Ctrl-C, see function finish()) */
int key;
static unsigned short outstreamID = 0;
SCTP_AssociationStatus assocStatus;
/* call ncurses function wgetch() to read in one user keystroke.
Did not use the wgetstr() function because it blocks until the user#
terminates with a end-of-line (return) key. This prevents the SCTP
library from sending out heartbeats, as well as queuing other callbacks
waiting for this potentially long function to terminate.
*/
key = wgetch(textWin);
switch (key)
{
case ERR:
sctp_shutdown(associationID);
endwin();
break;
/* ascii code for return key is 13 */
case 13:
case KEY_ENTER:
buffer[bufCount++]='\n';
buffer[bufCount++]=0;
/* Increment the Stream ID by 1 everytime data is sent,
if stream ID = largest stream ID assigned, reset stream ID to 0 */
if (outstreamID == statusUpdate.noOfOutStreams)
outstreamID = 0;
sctp_send(associationID, outstreamID, (unsigned char *)buffer, strlen(buffer),
SCTP_GENERIC_PAYLOAD_PROTOCOL_ID,
SCTP_USE_PRIMARY, SCTP_NO_CONTEXT,
SCTP_INFINITE_LIFETIME, SCTP_ORDERED_DELIVERY,
SCTP_BUNDLING_DISABLED);
/* Update the Outstream ID list in Monitor tool structure */
if (statusUpdate.OutstreamIDList[outstreamID] == -1)
statusUpdate.OutstreamIDList[outstreamID] = outstreamID;
/* Update the current position of OutstreamIDList array */
currOutstreamID = outstreamID;
/* update the display */
ncurses_display_AssocStatus(associationID);
outstreamID ++;
waddch(textWin,'\n');
wrefresh(textWin);
bufCount=0;
break;
case KEY_BACKSPACE:
displayPathDetails = 0;
ncurses_display_PathStatus(associationID);
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
/* ascii code for key '0' is 48, key '1' is 49 and so fro.....
therefore, key - 48 will return the value of the Path ID chosen */
chosenPath = key - 48;
displayPathDetails = 1;
sctp_getAssocStatus(associationID,&assocStatus);
if (chosenPath < assocStatus.numberOfAddresses)
ncurses_display_PathStatus(associationID);
break;
case KEY_RESIZE:
endwin();
initializecurses();
wrefresh(statusWin);
/* Display Functions*/
ncurses_display_AssocStatus(associationID);
ncurses_display_PathStatus(associationID);
break;
default:
if (bufCount<SCTP_MAXIMUM_DATA_LENGTH);
{
buffer[bufCount++]= key;
waddch(textWin, key);
wrefresh(textWin);
}
}
}
/* 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;
}
