[Backlogmanager] [FIWARE-JIRA] (HELP-19269) [fiware-stackoverflow] JS can' t receive JSON data from orion-ld broker, a CORS related issue occurred

[Fernando Lopez (JIRA)]

     [ https://jira.fiware.org/browse/HELP-19269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fernando Lopez reassigned HELP-19269:
-------------------------------------

    Assignee: Stefan Wiedemann

> [fiware-stackoverflow] JS can't receive JSON data from orion-ld broker, a CORS related issue occurred
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HELP-19269
>                 URL: https://jira.fiware.org/browse/HELP-19269
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Stefan Wiedemann
>              Labels: cors, fiware, javascript, json
>
> Created question in FIWARE Q/A platform on 27-02-2022 at 08:02
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/71283416/js-cant-receive-json-data-from-orion-ld-broker-a-cors-related-issue-occurred
> +Question:+
> JS can't receive JSON data from orion-ld broker, a CORS related issue occurred
> +Description:+
> I use orion-ld context brocker
> {
> "orionld version": "post-v1.0.0",
> "orion version": "1.15.0-next",
> "uptime": "0 d, 0 h, 25 m, 17 s",
> "git_hash": "nogitversion",
> "compile_time": "Wed Jan 26 15:58:47 UTC 2022",
> "compiled_by": "root",
> "compiled_in": "",
> "release_date": "Wed Jan 26 15:58:47 UTC 2022",
> "doc": "https://fiware-orion.readthedocs.org/en/master/"
> }
> If I try to request JSON data in an HTML file via JS like
> var myRequest = new XMLHttpRequest();
> myRequest.open("GET", "http://192.168.0.18:1028/ngsi-ld/v1/entities/urn:ngsi-ld:OffStreetParking:XXX_102700") ;
> myRequest.setRequestHeader("Accept", "application/ld+json")       
> myRequest.onload = function () {
>     console.log(myRequest.responseText);
> };
> myRequest.send();
> I got a error: "Access to XMLHttpRequest at 'http://192.168.0.18:1028/ngsi-ld/v1/entities/urn:ngsi-ld:OffStreetParking:XXX_102700' from origin 'http://192.168.0.18' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource."
> If I login to the docker container console and check the variable ORIONLD_CORS_ALLOWED_ORIGIN, it contains the necessary value "__ALL".
> What could be wrong here?



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