On 07/07/17 08:44, Lazar Kirchev wrote:
> Hello,
> 
> Prior to Tomcat 8.5.15 if the Content-Type request header specifies an
> invalid charset, then the HttpServletRequest.getReader() throws a
> UnsupportedEncodingException (from its javadoc:it should throw such an
> exception if the character set encoding used is not supported and the text
> cannot be decoded).
> 
> However, in Tomcat 8.5.15, with change
> https://github.com/apache/tomcat85/commit/18e70aff0fd3e9195d2bf01e445c49ea9fd44d0b
> this exception is silently ignored
> (in org.apache.coyote.Request.getCharsetFromContentType() ) and then the
> default charset is used (in
> org.apache.catalina.connector.InputBuffer.checkConverter()).
> 
> According to Servlet 3.1 specification, 3.11, the default charset should be
> used if the client does not specify a charset in the request.
> 
> Is this change of behavior in 8.5.15 intentional?

It is unintentional. Please create an issue for this in Bugzilla.

Mark

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