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

[Snjezana Peco (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBIDE-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12478987#action_12478987 ] 

Snjezana Peco commented on JBIDE-4686:
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This issue has been introduced by adding XHTML validator to JBoss Tools 3.1.0.
It doesn't have any entity resolver. External declaration are always downloaded from the Internet.
Fixing this issue would significantly speed up the XHTML validator that is very slow.
If you disable the XHTML validator (Window>Preferences>Validation), the warning message will disappear.

> "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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