[jbosstools-issues] [JBoss JIRA] Commented: (JBIDE-4686) "Server returned HTTP response code: 503" warning during HTML/XHTML validation

[Alex Savitsky (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBIDE-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12479037#action_12479037 ] 

Alex Savitsky commented on JBIDE-4686:
--------------------------------------

The warnings do indeed disappear when XHTML validation is disabled. However, I'd still appreciate this bug to be fixed, as XHTML is the markup of choice for Facelets, and now all the UI parts of my projects are not being validated...

> "Server returned HTTP response code: 503" warning during HTML/XHTML validation
> ------------------------------------------------------------------------------
>
>                 Key: JBIDE-4686
>                 URL: https://jira.jboss.org/jira/browse/JBIDE-4686
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>    Affects Versions: 3.1.0.M2
>            Reporter: Alex Savitsky
>            Priority: Minor
>
> All HTML/XHTML files are validated with a warning "Server returned HTTP response code: 503 for URL: http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd". W3C site (the one that hosts the referenced XHTML/HTML DTDs) has the following explanation: http://www.w3.org/blog/systeam/2008/02/08/w3c_s_excessive_dtd_traffic. Basically, they now block IPs for machines that request their DTDs too often, and recommend to cache the DTD instead of requesting it every time. Apparently, the JBoss Tools validator is one of the affected ones.
> The solution is simple - please cache the DTDs, given that they're highly unlikely to EVER change.
> Upd: affects M2 version of JBoss Tools as well, not just M1

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