## org.apache.http.conn.ssl
Class StrictHostnameVerifier

    java.lang.Object
      org.apache.http.conn.ssl.AbstractVerifier
          org.apache.http.conn.ssl.StrictHostnameVerifier

All Implemented Interfaces:
  HostnameVerifier, X509HostnameVerifier

    @Immutable
    public class StrictHostnameVerifier

extends AbstractVerifier

The Strict HostnameVerifier works the same way as Sun Java 1.4, Sun Java 5, Sun Java 6-rc. It's also pretty close to IE6. This implementation appears to be compliant with RFC 2818 for dealing with wildcards.

The hostname must match either the first CN, or any of the subject-alts. A wildcard can occur in the CN, and in any of the subject-alts. The one divergence from IE6 is how we only check the first CN. IE6 allows a match against any of the CNs present. We decided to follow in Sun Java 1.4's footsteps and only check the first CN. (If you need to check all the CN's, feel free to write your own implementation!).

A wildcard such as "*.foo.com" matches only subdomains in the same level, for example "a.foo.com". It does not match deeper subdomains such as "a.b.foo.com".

Since:
  4.0

Constructor Summary
`StrictHostnameVerifier()`

Method Summary
`String` `toString()`
`void` `verify(String host, String[] cns, String[] subjectAlts)` Checks to see if the supplied hostname matches any of the supplied CNs or "DNS" Subject-Alts.

Methods inherited from class org.apache.http.conn.ssl.AbstractVerifier
`acceptableCountryWildcard, countDots, getCNs, getDNSSubjectAlts, verify, verify, verify, verify`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### StrictHostnameVerifier

    public StrictHostnameVerifier()

Method Detail

### verify

    public final void verify(String host,
                             String[] cns,
                             String[] subjectAlts)
                      throws SSLException

  Description copied from interface: `X509HostnameVerifier`
  Checks to see if the supplied hostname matches any of the supplied CNs or "DNS" Subject-Alts. Most implementations only look at the first CN, and ignore any additional CNs. Most implementations do look at all of the "DNS" Subject-Alts. The CNs or Subject-Alts may contain wildcards according to RFC 2818.

  Parameters:
    `host` - The hostname to verify.
    `cns` - CN fields, in order, as extracted from the X.509 certificate.
    `subjectAlts` - Subject-Alt fields of type 2 ("DNS"), as extracted from the X.509 certificate.
  Throws:
    `SSLException` - if the verification process fails.

### toString

    public final String toString()

  Overrides:
    `toString` in class `Object`

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