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https://issues.apache.org/jira/browse/SOLR-15161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17286713#comment-17286713
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David Eric Pugh commented on SOLR-15161:
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[~brigaldies]this one is for you!
> JSONResponseWriter that have text/plain mimetype causes havoc for some tools
> ----------------------------------------------------------------------------
>
> Key: SOLR-15161
> URL: https://issues.apache.org/jira/browse/SOLR-15161
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: JSON Request API
> Affects Versions: 8.4
> Reporter: David Eric Pugh
> Priority: Minor
>
> Years ago, to make things "simpler" in some of our example configs, we did
> this:
>
> {{ <queryResponseWriter name="json" class="solr.JSONResponseWriter">}}
> {{ <!-- For the purposes of the tutorial, JSON responses are written as}}
> {{ plain text so that they are easy to read in *any* browser.}}
> {{ If you expect a MIME type of "application/json" just remove this
> override.}}
> {{ -->}}
> {{ <str name="content-type">text/plain; charset=UTF-8</str>}}
> {{ </queryResponseWriter>}}
>
> {{Today, this causes havoc when you have a JSONP XHR request combined with
> new browsers since they expect application/json. The Quepid project
> definitely gets this as an error ;)}}
>
> {{As of Solr 8.4.1, Solr ships with more restrictive security options by
> default. This, along with a early 2020 change by all the browser vendors has
> tightened up the rules for browser CORS interaction. The new default of
> {{nosniff}} for {{X-Content-Type-Options}} appears to be breaking this
> functionality, which interferes with outside websites accessing a Solr
> instance directly. The default configuration that ships with 8.4.1 now only
> allows such requests to originate from the Solr host itself.}}
>
> {{I'd like to remove the text/plain from our example configsets so future
> users don't get bit by this.}}
>
>
>
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