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https://issues.apache.org/jira/browse/NUTCH-2478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16288289#comment-16288289
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Markus Jelsma commented on NUTCH-2478:
--------------------------------------

Yes, this needs a change in the parser plugins. I sought to fix it in Content's 
constructor, but that wouldn't do it, the base is not passed. It needed a 
change to DomContentUtils to also pass the protocol to the method from the 
ParserPlugin. In getBase() orso i then resolved the protocol if base URL starts 
with //.

We already solved it for a customer in our custom ParsePlugin, i will later 
post a patch for ParseTika and ParseHtml.

> // is not a valid base URL
> --------------------------
>
>                 Key: NUTCH-2478
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2478
>             Project: Nutch
>          Issue Type: Bug
>    Affects Versions: 1.13
>            Reporter: Markus Jelsma
>            Assignee: Markus Jelsma
>             Fix For: 1.14
>
>
> This test fails:
> {code}
>   @Test
>   public void testBadResolver() throws Exception {
>     URL base = new URL("//www.example.org/");
>     String target = "index/produkt/kanaly/";
>     
>     URL abs = URLUtil.resolveURL(base, target);
>     Assert.assertEquals("http://www.example.org/index/produkt/kanaly/";, 
> abs.toString());
>   }
> {code}
> and has to fail because of invalid base URL, so the current URL is used. If 
> current URL is not /, its path will be prepended, resulting in 404 being 
> crawled.
> This ticket must allow // as base, and resolve the protocol.



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