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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HTTPCLIENT-1836) DefaultHostnameVerifier#getSubjectAltNames(X509Certificate) throws java.lang.ClassCastException
Date Tue, 28 Mar 2017 18:53:41 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Gary Gregory updated HTTPCLIENT-1836:
    Affects Version/s: 5.0 Alpha1

> 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
> 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
>   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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