Class StrictHostnameVerifier

  extended by org.apache.http.conn.ssl.AbstractVerifier
      extended by org.apache.http.conn.ssl.StrictHostnameVerifier
All Implemented Interfaces:
HostnameVerifier, X509HostnameVerifier

Deprecated. (4.4) Use DefaultHostnameVerifier

public class StrictHostnameVerifier
extends AbstractVerifier

The Strict HostnameVerifier works the same way as Sun Java 1.4, Sun Java 5, Sun Java 6. 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 "*" matches only subdomains in the same level, for example "". It does not match deeper subdomains such as "".


Field Summary
static StrictHostnameVerifier INSTANCE
Constructor Summary
Method Summary
 String toString()
 void verify(String host, String[] cns, String[] subjectAlts)
          Deprecated. 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

Field Detail


public static final StrictHostnameVerifier INSTANCE
Constructor Detail


public StrictHostnameVerifier()
Method Detail


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.

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.
SSLException - if the verification process fails.


public final String toString()
toString in class Object

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