iot broker issue with connecting to iot discovery

[mohamedamin10010027]

when i send queryContext request that request is sent to iot discovery but the response is the following {"errorCode":{"code":404,"reasonPhrase":"CONTEXT ELEMENT NOT FOUND","details":"Discovery response: RECEIVER INTERNAL ERROR (details: Receiver response empty)"},"contextResponses":[]}

when i checked iot discovery i found that iot broker appended "//ngsi9/DiscoverAvailabillity " to the url request to iot discovery ..i put in the config.default file in the uri of ngsi9 the ip of iot discovery http://130.206.177.25:8080/ ?

[flaviocirillo]

The IoT Broker contacts the IoT Discovery address specified in the iotbroker.conf.local and in case it is not found there, as backup it reads from the iotbroker.conf.default (see IoT Broker system configuration).

The parameter to set is _iotbrokerngsi9uri (see the default configuration file).

From that address, the IoT Broker appends /ngsi9/discoveryContextAvailability as defined in the Open NGSI-9 RESTful API specification by FIWARE.

[mohamedamin10010027]

thank you for response i have already done that but the server logs is osgi> 2018-02-16 12:12:04 INFO RestProviderController:409 -

<--- NGSI-10 has received request for Context query resource --->

2018-02-16 12:12:04 INFO RestProviderController:349 - Impossible to get the Json Request! Please check the error using debug mode. 2018-02-16 12:12:04 WARN Southbound:819 - Response from remote server empty 2018-02-16 12:12:04 INFO IotBrokerCore:749 - 0 query Services found

and the same response when i queryContext and the query is curl http://130.206.121.137:8060/ngsi10/queryContext -s -S --header 'Content-Type: application/json' --header 'Accept: application/json' -d @- <<EOF { "entities": [{ "isPattern": false, "id": "sensor6"

}]

} EOF

and that in the file iotbroker.cofig.local

!/bin/bash

iotbroker_dirconfig='/home/ubuntu/Aeron/fiwareRelease' iotbroker_bundlesconfigurationlocation='/home/ubuntu/Aeron/fiwareRelease/bundleC$ iotbroker_hsqldbdirectory='//home//ubuntu//Aeron//SQL_database//database//linkDB' iotbroker_logfile='/home/ubuntu/Aeron/IoTBroker-runner/logs/iotbroker.log' iotbroker_ngsi9uri='http://130.206.121.87.8080'

iot discovery hears that query in its logs and appear in that lot discovery logs "URL: http://130.206.121.22:8080//ngsi9/discoverContextAvailability" so what is the problem?

[flaviocirillo]

Dear Mohamed,

I suspect a bad behaviour with the OSGi enviroment of the IoT Discovery.

Please follow the new compilation instructions here : https://github.com/Aeronbroker/NEConfMan#compilation-procedure

and then run it following the configuration instructions here: https://github.com/Aeronbroker/NEConfMan#configure-the-nec-confman-with-setup-scripts If the problem persists, please send me the output of the "ss" command (check the end of the https://github.com/Aeronbroker/NEConfMan#configure-the-nec-confman-with-setup-scripts section), and the ConfMan_Runner/confman.conf.default, ConfMan_Runner/confman.conf.local and ConfMan_Runner/confman/configuration/config.ini

Thank you Best Regards Flavio

[mohamedamin10010027]

thank you MR Flavio , your are right the problem was in IoT Discovery that i installed before . i have installed ConfMan IoT Discovery, it works well and my problem is solved