RFR: 8298381: Improve handling of session tickets for multiple SSLContexts [v4]

[Volker Simonis]

On Thu, 22 Dec 2022 18:59:14 GMT, Xue-Lei Andrew Fan <xuelei at openjdk.org> wrote:

>> Volker Simonis has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Moved stateless key logic from SSLContextImpl to SSLSessionContextImpl and addressed comments by @XueleiFan and @ascarpino
>
> src/java.base/share/classes/sun/security/ssl/SSLSessionContextImpl.java line 97:
> 
>> 95:             currentKeyID = this.hashCode();
>> 96:         } else {
>> 97:             keyHashMap = null;
> 
> I may use an unmodifiable empty map so that we don't have to worry about null pointer exception.
> 
> `keyHashMap = Map.of();`

Done.

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PR: https://git.openjdk.org/jdk/pull/11590