Yes, I am using *simpleclient* but I modified the code to infinite loop instead of just getting 10 notifications. What I mean is when I run the sample without DoS, it runs well (even for an hour). But when I start DoS attack on the *simpleserver *(they are still running)*, *the *simpleserver* continues run about 10 or 15 notifications more before the error happened as I mentioned in the previous email.
*DANG Thien Binh* Networking Laboratory, 26317 Electronic and Electrical Engineering Department School of Information and Communication Engineering Sungkyunkwan University (SKKU) Suwon 440-746, KOREA +82-31-290-4226(LAB) +82-31-299-4134(FAX) email: dtbinh at skku.edu, binh01t2 at gmail.com On Sat, Mar 25, 2017 at 1:18 AM, Shetty, Mandeep <mandeep.shetty at intel.com> wrote: > Are you also using the simpleclient present in resource/examples/? > > Since you mentioned ?10 notifications?, the simpleclient IS written to > send the cancelObserve() request after the 10th notification. > This might be a trivial thing to verify. > > > > *From:* iotivity-dev-bounces at lists.iotivity.org [mailto: > iotivity-dev-bounces at lists.iotivity.org] *On Behalf Of *Binh Dang Thien > *Sent:* Thursday, March 23, 2017 8:44 PM > *To:* iotivity-dev <iotivity-dev at lists.iotivity.org> > *Subject:* [dev] Error when simulate DoS attack on IoTivity server > > > > Dear everyone, > > > > I setup IoTivity on Raspberry Pi and modify the *simpleserver *example > (in /resource/examples folder) that reads temperature of DHT11 sensors > (attached on Raspberry Pi board) and notify to the *simpleclient *(installed > on a PC running Ubuntu). I test 2 cases: > > 1. No DoS attack on Raspberry Pi: everything works fine > > 2. Launch DoS attack on Raspberry Pi from another PC: it still works fine > with around 10 notifications. However, it then returns > OC_STACK_NO_OBSERVERS from the function call *notifyListOfObservers.* > > Could you explain why this happens? And how to fix this? > > > > Thanks and best regards, > > *DANG Thien Binh* > > Networking Laboratory, 26317 > > Electronic and Electrical Engineering Department > > School of Information and Communication Engineering > Sungkyunkwan University (SKKU) > Suwon 440-746, KOREA > > +82-31-290-4226(LAB) > > +82-31-299-4134(FAX) > > email: dtbinh at skku.edu, binh01t2 at gmail.com > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.iotivity.org/pipermail/iotivity-dev/attachments/20170325/74ec9344/attachment.html>
