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https://issues.apache.org/jira/browse/HTTPCLIENT-1836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Gregory resolved HTTPCLIENT-1836.
--------------------------------------
       Resolution: Fixed
    Fix Version/s: 5.0 Alpha2
                   4.6 Alpha1
                   4.5.4

Fix for CCE is in trunk and branches. Please verify and close.

> DefaultHostnameVerifier#getSubjectAltNames(X509Certificate) throws 
> java.lang.ClassCastException
> -----------------------------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-1836
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1836
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: HttpClient (classic)
>    Affects Versions: 4.5.3, 5.0 Alpha1
>            Reporter: Ilian Iliev
>            Priority: Minor
>             Fix For: 4.5.4, 4.6 Alpha1, 5.0 Alpha2
>
>
> After upgrade to HttpClient 4.5.3, all of a sudden I started to receive the 
> following exception in one of my projects:
>   java.lang.ClassCastException: [B cannot be cast to java.lang.String
> The exception is thrown in DefaultHostnameVerifier#getSubjectAltNames() 
> method, on line 309:
>   final String s = (String) entry.get(1);
> The code above assumes that each entry is either a String or something 
> castable to String. However, according to Javadoc documentation of 
> X509Certificate.getSubjectAlternativeNames(), it can be a byte array 
> containing ASN.1 DER encoded value. Attempt to cast this byte array to String 
> is throwing java.lang.ClassCastException.
> Seems to be a regression introduced in version 4.5.3 with the fix for 
> HTTPCLIENT-1802



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