Hello Vijay, Another user I?ve been corresponding with on the list (in CC) is trying to address the same problem that you?re seeing with a similar STMicro board, so perhaps the two of you could share notes.
As discussed in https://lists.iotivity.org/pipermail/iotivity-dev/2016-October/005802.html, IoTivity-Constrained runs on Contiki as a Contiki application. It interacts with Contiki?s uIP stack (from port/contiki/ipadapter.c) in much the same way as do samples under examples/ipv6/simple-udp-rpl. I have just submitted a patch to produce more debug output from port/contiki/ipadapter.c. You can build client/server samples with make CLIENT/SERVER=1 DEBUG=1? and view output via the serial console. You?re free to add more output to the client/server app itself. If you find that the IP adapter on the client-side isn?t seeing any incoming messages after the server has responded, then there?s likely an issue with your network stack configuration. You could try a few things to understand the problem: i) enable Contiki?s debug output so you can see informative messages from the network stack while you run the client/server samples, ii) test out the default builds of client/server samples under examples/?/simple-udp-rpl on your hardware to observe how they work. Please share your findings on the list. You?re welcome to submit patches to IoTivity-Constrained if you spot something that needs revision. -Kishen. - Kishen Maloor Intel Open Source Technology Center From: <[email protected]> on behalf of Vijay Kumar <vijay.kumar at smartron.com> Date: Friday, October 21, 2016 at 12:37 PM To: "iotivity-dev at lists.iotivity.org" <iotivity-dev at lists.iotivity.org> Subject: [dev] Iotivity consatrained contiki server and client communication Dear Developers, I am using latest iotivity ported contiki server and client examples on stm32l1 boards. after ran the client and server, client is sending multi-cast message and sever receiving the multi-cast message and responding back. but the client is unable to receive the response sent by srver and is keep on multi-casting the message. i have traversed the client code and it is not at all touching the function "discovery" present in client_contiki.c program. can any one help me to solve this since i am new to iotivity. Thanking you, vijay
