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

[Alex Savitsky (JIRA)]

"Server returned HTTP response code: 503" warning during HTML/XHTML validation
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                 Key: JBIDE-4686
                 URL: https://jira.jboss.org/jira/browse/JBIDE-4686
             Project: Tools (JBoss Tools)
          Issue Type: Bug
    Affects Versions: 3.1.0.M1
            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.

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