[infinispan-issues] [JBoss JIRA] (ISPN-6899) Investigate ALPN support

[Sebastian Łaskawiec (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-6899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270943#comment-13270943 ] 

Sebastian Łaskawiec commented on ISPN-6899:
-------------------------------------------

RFC Highlights:
* Allows supporting multiple application on the same TCP/UDP port
* During the handshake the client sends a list of supported protocols (in client TLS Hello) and the server chooses the protocol and sends it back (server Hello).
{noformat}
   Client                                              Server

   ClientHello                     -------->       ServerHello
     (ALPN extension &                               (ALPN extension &
      list of protocols)                              selected protocol)
                                                   Certificate*
                                                   ServerKeyExchange*
                                                   CertificateRequest*
                                   <--------       ServerHelloDone
   Certificate*
   ClientKeyExchange
   CertificateVerify*
   [ChangeCipherSpec]
   Finished                        -------->
                                                   [ChangeCipherSpec]
                                   <--------       Finished
   Application Data                <------->       Application Data


{noformat}
* The server should pick the most highly preferred protocol and shall not respond with different protocol than supplied by the client.
* ALPN effectively deprecates NPN

> Investigate ALPN support
> ------------------------
>
>                 Key: ISPN-6899
>                 URL: https://issues.jboss.org/browse/ISPN-6899
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Cloud Integrations
>            Reporter: Sebastian Łaskawiec
>            Assignee: Sebastian Łaskawiec
>            Priority: Optional
>
> Application layer Protocol Negotiation might be used by the Hot Rod server and allow creating a unified client package. The client could use many different transport technologies (Hot Rod, REST) and negotiate with the server which one could be used.
> ALPN RFC: https://tools.ietf.org/html/rfc7301
> ALPN JDK9 support: http://openjdk.java.net/jeps/244



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