AuthenticationDate parse error

[helphi]

CAS3.0 server return AuthenticationDate with ZonedDateTime src, but go-cas parse it with time.Time, so i get the error bellow:

parsing time "2018-06-21T14:44:52.715+08:00[Asia/Shanghai]": extra text: [Asia/Shanghai]

the response is:

curl "http://cas.example.com/p3/serviceValidate?service=http://localhost:9000&ticket=ST-2344-9oiwc7g9_xg5HBxx3T371X4ARLI-db796d3ad01b"

<cas:serviceResponse xmlns:cas='http://www.yale.edu/tp/cas'>
    <cas:authenticationSuccess>
        <cas:user>helphi</cas:user>
        <cas:attributes>
            <cas:credentialType>RememberMeUsernamePasswordCredential</cas:credentialType>
            <cas:isFromNewLogin>true</cas:isFromNewLogin>
            <cas:mail>helphi@example.com</cas:mail>
            <cas:authenticationDate>2018-06-21T13:43:07.597+08:00[Asia/Shanghai]</cas:authenticationDate>
            <cas:authenticationMethod>LdapAuthenticationHandler</cas:authenticationMethod>
            <cas:successfulAuthenticationHandlers>LdapAuthenticationHandler</cas:successfulAuthenticationHandlers>
            <cas:longTermAuthenticationRequestTokenUsed>true</cas:longTermAuthenticationRequestTokenUsed>
            <cas:sn>helphi.he</cas:sn>
            </cas:attributes>
    </cas:authenticationSuccess>
</cas:serviceResponse>

[geoffgarside]

Based on the CAS 3.0 spec that form of cas:authenticationDate isn't valid for the XML Schema xs:dateTime type.

[helphi]

Based on the CAS 3.0 spec, cas server use ZonedDateTime to process xs:dateTime and go-cas use time.Time to process xs:dateTime, but ZonedDateTime of java is not compatible with time.Time of golang.

[geoffgarside]

It doesn't look like ZonedDateTime is compatible with xs:dateTime, so while it may be able to parse it in Java it doesn't look like the generation of the authenticationDate in the apero CAS server is valid according to the specification.

[helphi]

But CAS server and the cas-java-client implements xs:dateTime with ZonedDateTime now, and we can't parse it with go-cas.

[l1905]

my result is same, it need to compatible, or cas 3.0 will not work