Andy, We will try to recreate the scenario on our end and report back. Please confirm whether this is on the master branch? Regards, --Vijay From: iotivity-dev-bounces at lists.iotivity.org [mailto:[email protected]] On Behalf Of ??? Sent: Tuesday, March 24, 2015 4:06 AM To: "Lankswert,Patrick<patrick.lankswert"@intel.com Cc: iotivity-dev at lists.iotivity.org Subject: Re: [dev] Cannot handle fast notification in ClientSever Mode
Hi Pat I'm andy and I had been envolved Group Manager task last year. Currently we are testing IoTivity to handle several things simultaneously. In our scenario, one IoTivity client exist to get some data that generated by another IoTivity server and we are now using observe mechanism to get the data from IoTivity server. We supposed that frequent log generation by IoTivity server can be happen in everywhere so we've tested NotifyObserve function with the period 1 sec. to test that scenario. When the mode of that IoTivity client is 'Client', it seems to be okay. However the mode of IoTivity client is 'ClientServer', we've seen many notification had been lost. Mr. Kwon, my colleque reported this a week before but there are no reactions about it. Since IoTivity/OIC is to support local connectivity in IoT domain, I think collection of data from things is very important feature. As the chair/maintainer of Discovery & Connectivity TG, please review this problem and let me know what kind of situation is this. Is this... - intentional situation? then why? - known problem? then when this can be resolved? - from some mistake of our side? (means isn't this reproducible?) - the sitaution that needs more testing? Regards Andy Minho Lee ------- Original Message ------- Sender : ???<daeken.kwon at samsung.com<mailto:daeken.kwon at samsung.com>> S5(??)/??/IoT Solution Lab(S/W??)/???? Date : 2015-03-16 11:41 (GMT+09:00) Title : [dev] Cannot handle fast notification in ClientSever Mode Dear All Hi, All While I'm testing between simple client and simple clieintserver, I found one issue about handling notificatoin. Client with Clientserver mode might have issue when server send notification fast. If there are many servers which sends notification, this situation become worse. 1) Test Scenario - Source code : occlient.cpp, ocserver.cpp (13th March) - Host mode of operation of occlient is OC_CLIENT_SERVER. - ChangeLightRepresentation() : change sleep time to 1 sec for sending NotifyOfObserve every 1sec 2) Test Result - Simple server send notification every 1 sec but simple client (ServerClient Mode) can't handle this notification in time. ex) // simple server : sending 50 notification messages 234 9:v:1 t:1 tkl:8 c:64 id:47423 o: [ 6:'\x00\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x0990\x0A\x09}\x0A}]}\x00 ... 2137 9:v:1 t:0 tkl:8 c:64 id:55693 o: [ 6:',\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09290\x0A\x09}\x0A}]}\x00 2139 9:v:1 t:0 tkl:8 c:64 id:55689 o: [ 6:'(\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09270\x0A\x09}\x0A}]}\x00 2141 9:v:1 t:0 tkl:8 c:64 id:55702 o: [ 6:'5\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09335\x0A\x09}\x0A}]}\x00 2143 9:v:1 t:0 tkl:8 c:64 id:55703 o: [ 6:'6\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09340\x0A\x09}\x0A}]}\x00 2144 9:v:1 t:2 tkl:0 c:0 id:55673 2146 9:v:1 t:2 tkl:0 c:0 id:55669 ... // simple clientserver : handle 28 notifiaction messages v:1 t:1 tkl:8 c:64 id:47423 o: [ 6:'\x00\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x0990\x0A\x09}\x0A}]}\x00 ... v:1 t:1 tkl:8 c:64 id:55683 o: [ 6:'"\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09240\x0A\x09}\x0A}]}\x00 v:1 t:1 tkl:8 c:64 id:55684 o: [ 6:'#\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09245\x0A\x09}\x0A}]}\x00 v:1 t:0 tkl:8 c:64 id:55685 o: [ 6:'$\x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09250\x0A\x09}\x0A}]}\x00 v:1 t:0 tkl:8 c:64 id:55681 o: [ 6:' \x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09230\x0A\x09}\x0A}]}\x00 v:1 t:0 tkl:8 c:64 id:55681 o: [ 6:' \x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09230\x0A\x09}\x0A}]}\x00 v:1 t:0 tkl:8 c:64 id:55681 o: [ 6:' \x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09230\x0A\x09}\x0A}]}\x00 v:1 t:0 tkl:8 c:64 id:55681 o: [ 6:' \x00\x00\x00', 12:'\x32', 14:'\xFF\xFF\x02\x00' ] d:{"oc":[{\x0A\x09"href":\x09"/a/light_L",\x0A\x09"rep":\x09{\x0A\x09\x09"state":\x09"off",\x0A\x09\x09"power":\x09230\x0A\x09}\x0A}]}\x00 Please find attched test source code (\resource\csdk\stack\samples\linux\SimpleClientServer\) and logs. Thanks. DK Kwon ------------------------------------------------ Kwon, Dae-Ken Senior Engineer IoT Solution Lab Web & Convergence Team, Software Center SAMSUNG ELECTRONICS CO.,LTD Mobile : +82-10-7260-4385 E-mail : daeken.kwon at samsung.com<mailto:daeken.kwon at samsung.com> ------------------------------------------------ Regards, Andy Minho Lee -------- Lee Min Ho Principal Engineer IoT Solution Lab. Web & Convergence Team Software Center SAMSUNG ELECTRONICS CO.,LTD TEL . 82-31-279-7888 FAX . 82-31-279-0523 Mobile . 82-10-6228-8340 E-Mail . minho03.lee at samsung.com<mailto:minho03.lee at samsung.com> [cid:image001.gif at 01D065E8.CD166780] [http://ext.samsung.net/mailcheck/SeenTimeChecker?do=a89e2f31c590267a45c25d38f187fe3bb5fc9be732af79302829e26d6950518d4e60fcf6aeb61df594c3b6ddffd7613bcb238d00164b0be48eeb9bec5ad9c75d326bbdfb2ea96a2fcf878f9a26ce15a0] -------------- next part -------------- An HTML attachment was scrubbed... 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