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From "Gary D. Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCORE-313) ContentType.create(final String mimeType, final String charset) uncaught exception when charset == ""
Date Wed, 19 Sep 2012 19:12:07 GMT

    [ https://issues.apache.org/jira/browse/HTTPCORE-313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13458989#comment-13458989
] 

Gary D. Gregory commented on HTTPCORE-313:
------------------------------------------

It seems sensible. What about a string full of white space (space, tab and so on)?
                
> ContentType.create(final String mimeType, final String charset) uncaught exception when
charset == ""
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HTTPCORE-313
>                 URL: https://issues.apache.org/jira/browse/HTTPCORE-313
>             Project: HttpComponents HttpCore
>          Issue Type: Bug
>          Components: HttpCore
>    Affects Versions: 4.2.1
>         Environment: Ubuntu 12.04 LTS with openjdk-7
>            Reporter: Guillaume Castagnino
>
> I parse a broken HTTP response from a server that replies with a crafted Content-Type
header:
> Content-Type: text/html; charset=
> charset is present, but is empty. When using the EntityUtils.toString method, this triggers
an uncaught exception in ContentType.create.
> Indeed, it calls this:
> return create(mimeType, charset != null ? Charset.forName(charset) : null);
> charset is checked against the null value. But the empty string is not checked.
> Charset.forName("") throws a "java.nio.charset.IllegalCharsetNameException" exception
which is not caught whereas Charset.forName("broken") throws a "java.nio.charset.UnsupportedCharsetException"
exception, which is correctly handled.
> So I think that the empty string should be checked and managed like the null, isn't it
?

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