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https://issues.apache.org/jira/browse/HTTPCLIENT-1119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13579419#comment-13579419
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John Vasileff commented on HTTPCLIENT-1119:
-------------------------------------------

Will - I think your comment about switching out the hostname verifier makes 
sense. Without SNI, by the time hostname verification is attempted we have 
already been sent the _wrong_ certificate. So hacking a verifier to claim the 
wrong certificate is ok would be the wrong thing to do. I am not familiar with 
the codebase, but it looks like the patch above does the right thing by adding 
a "HostNameSetter". The web server may have several certificates, it just needs 
SNI to help it decide which one to send the client.
                
> Server Name Indication (SNI) Support
> ------------------------------------
>
>                 Key: HTTPCLIENT-1119
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1119
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>          Components: HttpClient
>            Reporter: Gus Power
>              Labels: sni, ssl, tls, vhost
>             Fix For: Future
>
>         Attachments: 
> HTTPCLIENT-1119-support-SNI-on-Java-7-via-setHost-of.patch
>
>
> Provide support for Server Name Indication (SNI) support as per RFC 3546 
> (section 3.1).
> Currently attempting to connect to SNI enabled host 'expectedhost' over SSL 
> using http client results in an SSLException similar to:
> javax.net.ssl.SSLException: hostname in certificate didn't match: 
> <expectedhost> != <defaulthost>
>   at 
> org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:220)
> We use SNI on some of our environments and were trying to use httpclient to 
> automatically test host access and availability.

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