Yannick Dylla created HTTPCLIENT-2280:
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Summary: HostnameVerifier does not support using IP address in CN
Key: HTTPCLIENT-2280
URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2280
Project: HttpComponents HttpClient
Issue Type: Bug
Affects Versions: 5.0.4
Reporter: Yannick Dylla
Hi,
we are migrating from the 4.x client to 5.x and noticed that the behavior of
the DefaultHostnameVerifier changed. Since HTTPCLIENT-2149
https://github.com/apache/httpcomponents-client/pull/302 the HostnameVerifier
does no longer accept certificates with an ip address in its CN and with no
subject alts. Verification fails with "Certificate for <127.0.0.1> doesn't
match any of the subject alternative names: []".
I know using ip addresses in the CN is not really recommended or good practice,
but I also see no reason to not use the `matchCN` fallback in this case. The
functionality was probably just removed by accident with HTTPCLIENT-2149.
I will open A github PR with my proposed solution once I know the number of
this issue :)
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