This function returns a handle to the upstream node of a given connection.
CciNode* cciGetSourceNode(int* returnCode,
CciConnection * connection);
void myPropagatedMessageCallback(
CciMessage* message,
CciMessage* localEnvironment,
CciMessage* exceptionList,
CciMessage* environment,
CciConnection* connection){
…
…
int rc = CCI_SUCCESS;
CciNode* sourceNode = cciGetSourceNode(&rc,
connection);
/*you should now check the rc for unexpected values*/