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From "Idan Sheinberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HTTPCLIENT-1708) Issues With Extended ASCII ( Latin Chars ) Escaping with HttpClient 4.5.1
Date Mon, 28 Dec 2015 17:04:49 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-1708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15072913#comment-15072913
] 

Idan Sheinberg commented on HTTPCLIENT-1708:
--------------------------------------------

Sure thing and thanks for your prompt response.

This is a method  that tries to access an S3 JPEG URL which contains extended ascii latin
chars
notice the print outs and see how the url is decoded 

    public static void main(String[] args) throws IOException, URISyntaxException {

        HttpClient hc = HttpClientBuilder.create().build();
        URI uriGoneBad = new URI("http://uritest.s3.amazonaws.com/Dépot_Électros.jpg");
        HttpHead headRequest = new HttpHead(uriGoneBad);
        
        System.out.println(uriGoneBad.toString());
        System.out.println(uriGoneBad.toASCIIString());
        System.out.println(headRequest.getRequestLine());
        
        try (CloseableHttpResponse httpResponse = (CloseableHttpResponse) hc.execute(headRequest))
{
            if (httpResponse != null) {
                System.out.println(httpResponse.getStatusLine().getStatusCode());
            }
        }
    }

If you take the link and paste it in a browser , you can see it gets escaped like this  (
this uri will work with httpclient ):
http://uritest.s3.amazonaws.com/De%CC%81pot_E%CC%81lectros.jpg

if you run URLDecode.decode("Dépot_Électros.jpg" , "UTF-8") , you will get the same escape
patterns .
as noted in the description , the URI object uses the SUN "Normalizer" class internally  which
causes character manipulation




> Issues With Extended ASCII ( Latin Chars ) Escaping with HttpClient 4.5.1
> -------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-1708
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1708
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient
>    Affects Versions: 4.5.1
>         Environment: Ubuntu Variant 15.04
> Netbeans 8.1 IDE
> Java 8 ( Oracle JDK 1.8.6x)
>            Reporter: Idan Sheinberg
>
> Hey Guys
> Trying to send an httpclient HttpHead request for the following url  - 'http://some.domain.com/amnetcanadaplatform/HomeDépot_Électros_WEB22s_video.mp4'
> I Notice it gets escaped as 'http://some.domain.com/amnetcanadaplatform/HomeD%C3%A9pot_%C3%89lectros_WEB22s_video.mp4'
> While other programs/utilities/frameworks expect it to be 'http://some.domain.com/amnetcanadaplatform/HomeDe%CC%81pot_E%CC%81lectros_WEB22s_video.mp4'
> I've done some digging up the source code and tracked the issue down  to  "toASCIIString()"
of the Java URI ( WHICH OF COURSE IS NOT YOUR RESPONSIBILITY )object being called in order
to retrieve the request line
> Class : org.apache.http.client.methods.HttpRequestWrapper
> Method : getRequestLine() 
> Line : 113
> Internally the line 'String ns = Normalizer.normalize(s, Normalizer.Form.NFC);' manipulates
the chars so their unicode value changes , which causes the 'inappropriate' values to be displayed
for the escaped URI 
> Class : java.net.URI
> Method : encode(String s)
> Line : 2723
> Now I know this would extra hard to even get to a point where I find out if this is a
java language issue , but I don't believe unicode manipulation  of bytes is a desired behavior
 for url encoding. Is there any known specific why you used the "toASCIIString()" method instead
of the plain "toString()" method
> Do you think there's a chance this issue can be resolved on your end ?



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